US2027233A - Cutter mechanism for packaging machines - Google Patents

Description

Jan. 7, 1936, R J. HUTT ET AL CUTTER MECHANISM FOR PACKAGING MACHINES Original Filed March 24, 1935 2 fiGeorgeLf fltiarne Patented Jan. 7, 1936 PATENT OFFICE 7 2,027,233 CUTTER MECHANISM FOR PACKAGING MACHINES i Robert J. Hutt and George A. Hutt,

Brooklyn, N. Y.

Original application March 24, 1933, Serial No.

662,492. Divided and this application November 30, 1934, Serial No. 755,430

5 Claims. (01. 164-62) This invention relates to a cutter mechanism for a packaging machine, the cutters being operated by a common powered unit in respective alternate actions for accomplishing different re- 5 sults by individual rotary and oscillatory movements'during a single complete movement of the driving or powered unit.

An object of the invention is to accomplish one function by one cutter of said mechanism 10 and a double function by the other cutters thereof, and said functions are accomplished through a powered element common to all of said cutters.

This application is divided from a copending 15 application Ser. No. 662,492, filed March 24, 1933,

for Packaging machines.

The invention has for its further objects to provide certain other novel features, all of which will be more clearly described and claimed.

20 In the drawing- Fig. 1 is a skeletonized side elevation of the packaging machine above referred to, with the cutter mechanism mounted thereon.

Fig. 2 is a plan view of the rear portion of 25 the packaging machine of Fig. 1.

Fig. 3 is anenlarged cross-sectional elevation taken about on the line 3-3 of Fig. 2.

Fig. 4 is a fragmentary plan view as indicated by the arrow 4, of Fig. 3.

30 Fig. 5 is an enlarged side elevation as indicated by the arrow 5, of Fig. 2 showing the parts in the cutting position.

Fig. 6 is a similar view but showing the parts in the recovery position.

36 Fig. '7 is an enlarged cross-sectional fragmentary view taken about on the dotted line '|--l of Fig. 5.

Describing the construction in detail, l designates the packaging machine to which the 40 invention is applied.

The packaging machine generally comprises a supporting frame ll over which webs of paper I2 for forming packages l3 are caused to travel in intermittent movements, the movements be- 4 ing equal to the determined running dimension of the packages.

The packaging machine proper comprises a power plant [4, a web feeding mechanism IS, a

50 printing mechanism [6, and a gluing mechanism 11.

Referring now to the inventive features; mounted for reciprocatory movements on the opposite upper side rails 18, of the machine 55 frame H, are slide bars I9 and 20, the latter having an extension 2| which is permanently connected in any manner with a rack-bar 22.

The slide bars I9--20 are bolted to opposite posts 24 as at 25' (Fig. 7) said posts being provided with journals 26, in which a rock-shaft 21 operates, and keyed to the ends of this rockshaft are upstanding arms 28, having upper bearings 29 for a connecting shaft 30, which is extended at both sides of the machine to receive, in pivotal relation, the rear ends of crank-rods 10 3|, connected at their forward ends with preferably adjustable power cranks 32, driven through the power plant l4 and connections.

. Fixed to a side rail l8 of the frame II, is a vertically arranged track piece 33, formed with a semi-circular recess 34 and it is spaced from the side rail to form a groove 35. A gate-piece 36 is loosely suspended from the connecting shaft or bar 30, and has a curved recess 31, which underlies a roller 38 riding on the track 33, as the said slide bars and associated parts are forced backwardly in the web feeding movement and at near the end of this movement the roller 38, revoluble on the end of an arm 39, fixed. on a cutter bar 40 will drop into and quickly ride out of said recess 31, which action permits of a drop of the sharp edge of the cutter bar 40, superinduced by a weight 4|, on an arm 42, also adjustably fixed to said cutter bar 40, which has its rear edge pivoted to the slide rails i9 and 20 as shown at 43, thus cross-cuttin the webs into packages.

Just prior to the back movement of the slide rails and their associated parts, the arms 28 are swung to the left as in Fig. 6, thus drawing the wide end of the gate piece over and raising the roller 38 to the level of the track 33 and thus raising the cutter edge to the inoperative position until the roller again is moved over the recess in said track when another cut will take 40 place by gravitational movement of the free sharp edge of the cutter bar.

The rack-bar 22 extends forwardly at one side of the packaging machine and operates in meshed contact with a gear 44, carried on one end of a rotary shaft 45, journalled in suitable bearings 46, resting on the side rails of the machine and journalled in the same bearings, is an upper or primary cutter shaft 41, (Fig. 3) on which a pair of rotary disk cutters 48, a gear 49, and a ratchet wheel 50 are pinned, together with a sprocket wheel 5| which is loose on said shaft. A pawl 52 is pivoted to the loose sprocket wheel and is held in contact with the ratchet wheel by a spring 53.

Fixed to the shaft 45, inward of one of the bear- 55 ings 46, is a sprocket'wheel 54, which through a 'chain 55, drives the said sprocket wheel 5|, thus the ratchet wheel 50, with the disk cutters inactive.

Mounted between the side rails of the machine and directly under the cutter shaft 41, is a secondary cutter shaft 56, on which are pinned lower cutter disks 51, operable in overlapping relation with the upper cutter disks 48, and a gear 58, in mesh with the gear 49, for driving the lower shaft.

From the above description, it will be clear that the slides l9 and 2B and the connected rack-bar, constitute a powered unit for operating all of the cutters of the mechanism, the slides functioning to carry the cross cutter back to its gravitationally operated position and the rack-bar acting to operate the disk-cutters in one of its movements.

What we claim and desire to secure by Letters Patent is:--

1. Cutter mechanism in a machine for forming packages of sheet webs and interposed contents; an oscillatory cutter for severing the webs at appropriate intervals; rotary cutters for trimming the edges of the webs and for guiding the same against lateral displacement; said cutters having alternate actions while said webs are passing through said machine; and means. for actuating the cutters in the manner set forth.

2. In combination, a carriage, a cutter bar pivoted to a part of said carriage and movable therewith; a fixed track having a recess; an arm normally fixed, but adjustable relative to said bar;

a roller on said arm and in contact with said 5 track, said cutter bar active only when said roller enters said recess in a movement of said carriage.

3. In combination, a carriage; a cutter bar pivoted thereto; a fixed track; an arm on the cutter bar; a roller on said arm and in contact with said 10 track; and means for releasing said cutting bar to fall intocutting action as the carriage moves into its feeding limit.

4. A cutter mechanism for packaging machines, comprising a gravitationally operated cutter for cross-severing webs of paper when at rest; a gang of cutters for trimming the edges of said webs when in motion, said cross-cutter and trimming cutters having alternate operations, and a powered unit for causing said operations.

5. A cutter mechanism comprising in combination, slide bars, a cutter plate pivoted at its inactive side to said slide-bars; a gear rack extending from one of said slide bars; a shaft having a sprocket and a gear thereon, said gear in mesh with said rack-bar; a primary cutter shaft having a sprocket; a chain traversing said sprockets; means whereby the primary shaft may be operated in one direction only; a secondary cutter shaft located below the primary shaft, each shaft having a gear in meshed relation; and disk cutters on said shafts operable in overlapping relation.

ROBERT J. HUTT. GEORGE A. HUTT.

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