US1923261A - Cut-off mechanism - Google Patents

Description

Aug. 22, 1933.

K. GARLING 1,923,261

CUT-OFF MECHANISM Filed Dec. 1. 1931 F LL- 3 Sheets-Sheet INVENTOR 160% E. GafiZi/vg BY HIS ATTORNEYd? Aug. 22, 1933. GARUNG 1,923,261

CUTOFF MECHANISM Filed Dec. 1931 5 Sheets-Sheet 2 INVENTOR KarZ E. Gar'Zi/Lg BY HIS ATTORNEY 1933- K. E. GARLING I 1,923,261

CUT OFF MECHANI SM Filed Dec. 1. 1931 3 Sheets-Sheet 3 rm m MA W///'/////// 1607'! 15'. arlmg EB- BY HIS ATTORNEY Patented Aug. 22, 1933 UNITEDSTATES PATENT OFFICE 7 11,923,261 CUT-OFF MECHANISM Karl Gar-ling. Newark, N. J. Application December 1, 1931. Serial No. mazes 5 Claims. (01. ltd-60) adapted to operate upon amoving object while travellingtherewith atthe speed of travelling 5 of said object without bashing or injucing the.

sides of the severance; to provide a cutting blade and-means for moving the same into a travelling object and perpendicular to the path of travel thereof, and to move in synchronism l therewith in the direction of travel of said objecti to provide a circular cutting disk and means for advancing the same transverse to the line of travel of an object to be severed and in synchronized speed with. the article being sevl ered.

7 Drawings Figure 1 Ba plan view of the cutting mechanism referred to. v V F'gure 2 is a sectional elevationthereof, the sectionbeing taken on-the line in Figure 1.

Figure is a detailed view showing an elevation of a part of the' driving mechanism for moving the. cutter blade into, out of, and lengthwise, with the o ect to be cut. 1

4 elevation of a portion of a mechanism employed for guiding the article to be cut.

V Description The mechanism herein disclosed is employed principally in connection with the manufacture of sipper straws or paper tubes made in imitation of straws used principally for dispensing soda water and similar liquids These straws are primarily formed as elongated tubes of small diameter, at the time of forming being moved at a very rapid rate. This tube is run through guide tubes 9. The tube 9 is formed in two sections as shown in Figure 4 of the drawings, the sections being separated to provide a gap 10 therebetwecn. It is'through this gap that the cutting blade or disk 11 is extended by the crank arm 12, as the same is gyrated by the shaft 13, at the lower end of which is the miter gear 14. Power is imparted to the gear 14 through the matched gear 15 and shaft 16.

The crank arm 12 and the crank arm 17 are of the same length and are arranged so that the movements of the two crank arms are synchronized. To this end the shaft 16 is provided with a spiral gear 18 which is meshed with a second and similar gear 19 meshed to the shaft 29 on which the crank arm 1'7 is fixedly mounted.

It will be understood that the gears 14 and 15 are matched as are gears 18 and 19, the length of the arms 12 and 1? being similar, and the shafts on which they are mounted having the same rate of rotation, the swing or rotation of said arms are identical and therefore the parts carried therewith moved in synchronism.

The guide tubes 9 are held rigidly on a block 21. The block 21 as seen best in Figure 2 of the drawings is slidably mounted on the stub shafts 22, suitable bushings being provided therefor. On the under side of the block 21 is cut a slot indicated by dotted lines in Figures 1 and 2.

short shaft 25 indicated by dotted lines in Figure 2 of the drawings.

The result of this construction is as follows: When the shaft 20 is rotated, the arm 17 is gyrated about the center of said shaft with the result that the block. .24 slides lengthwise of the slot '23 moving the block 21 on the stub shaft 22 back and forth on said shafts. This provides for a movement of the guide tubes 9 in parallel relation to the said stub shafts and in the line of the delivery of the tubes formed, the sip straws moving therethrough.

- The shaft 13 moves in timed relation with the shaft 20 with the result that the arm- 12 is gyrated in timed relation to the arm 1'7, with the resultthat the cutting blade 11 is advanced into and withdrawn. from. the path of the straw tube and into and from the gap it) between the tubes 9. Also during the time when the tubes 9, contain- 0 ing the straw tube, are in longitudinal motion, the blade 11 has a motion axially parallel thereto and travels in synchronize movement therewith. The blade 11, however, maintained in its dependent relation to said path of movement by the gear tra n indicated by the numerals 26, 27, 28, 29 and 30.

The gear 26 is made fast on the shaft 31,v shown best by dotted lines in Figure 2 of the drawings. The shaft 31 is pinned to the journal block 32. The journal block 32 forms a journal to mount the short shaft 33 on which the blade 11 is secured. On the shaft 33 also there is mounted the pulley 34 driven by a belt 35 from an independent source of power.

The twin gear 27 is loosely mounted on the shaft 13 and is i eshed with the gear 28 that is driven through the gears 29 and 3% and the shaft 36 which is operatively connected with the shaft 16 through the miter gears 37.

From the foregoing it will be seen that themovement being a continuous operation without thrust or jar of elements, the mechanism is smoother running withless noise and wear on.

the mechanism to which it may be attached.

I claim:

1. In combination with a paper tube forming mechanism for forming and continuously advancing a tube, a cut-off mechanism for said tube comprising, a cutter blade disposed in perpendicular and juxtaposed relation to said tube, a pivotal mounting for said blade, means -for rotating said blade, a gyratory support for said pivotal mounting, means for rotating said support, and means for maintaining said blade in constant perpendicular relation to said tube,

said means embodying a mechanism for rotat-' ing said pivotal mounting in a direction contrary to the rotation of said gyratory support.

2. In combination with a paper tube formingmechanism for forming and continuously advancing a tube, a cut-01f mechanism for said tube comprising, a cutter blade disposed in .perpendicular and juxtaposed relation to said'tube, a .pivotal mounting for said blade, means for rotating said blade, a gyratorysupport for said pivotal mounting, means for rotating said support, and means for maintaining said blade in constant perpendicular relation to said tube, said means embodying a driving mechanism for rotating said gyratory member, and'means operatively connecting said driving means and said pivotal mounting for said bladeifor rotating said mounting in a direction contrary to the rotation of. said gyratory support. 1

3. In combination with a paper tube forming mechanism for forming and continuously advancing a tube, a cut-off mechanism forsaid gears being interconnected for tube comprising, acutter blade disposed in perpendicular and juxtaposed relation to said tube, a pivotal mounting for said blade, means for rotating said blade, a gyratory support for said pivotal mounting, means for rotating said support, means for maintaining said blade in constant perpendicular relation to said tube, said means embodying a driving mechanism for rotating said gyratory member, and means operatively connecting said driving means and said pivotal mounting for said blade for rotating said mounting in a direction contrary to the rotation of said gyratory support, said means comprising ,a train of gears operatively connected and arranged to rotate said pivotal mounting as above specified.

4. In combination with a paper tube forming mechanism for forming and continuously advancing a tube, a cut off mechanism for said tube comprising, a crank arm, a journal block rotatablycarried at an outer part of the crank arm and having a journal transverse thereof, a cutter 'rotatably'mounted by said journa1,a train of gears for rotating said journal block,

and driving connections for rotating the'said" crank, said driving connections and train of synchronizing rotation of the crank arm and rotation of the journal block for maintaining the cutter normal to the tube being cut during the cutting operation. 7

5. In combination with a paper tube forming mechanism for forming and'continuously' advancing a tube, a cutoff mechanism for said tube comprising a crank arm, a journal block rotatably carried at an outer part of the crank arm and having a journal transverse thereof,

a cutter rotatably mounted by said'journal, a,

train of gears for rotating said journal block,

driving connections for rotating the said crank,

said driving" connections and train of gears be ing interconnected for synchronizing rotation of the crank arm and rotation of the journal block for maintaining the cutter normal to the tube'being cut during the cutting operation, a

straw guide normal to the cutter, and means for reciprocating said straw guide simultaneously and in synchronism with movement of the cutter in an axial direction.

KARL E. GARLING.

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