US1549892A - Carton-routing machine - Google Patents

Description

Aug. 18, w25. 1,549,592

N. SANDBERG CARTON ROUTING MACHNE FlSd NOV. 7. -192 I NV EN TGR.

"F W97@ 5mm@ 5 ATTO@ Ys.

Patented Ang. 18, 1925.

UN I T ED STA T ES PATENT 4O FI C E.

NELS SANDBERG, 0F lST. PAUL, MINNESQTA, ASSIGNOR TO WALDORF PAPER PRODUCTS COMPANY, A. CORPORATION OF MINNESOTA.

celeron-nocturne MACHINE.

Application -led November 7, 1924.

T 0 all whom 25 may canoe-ra:

Be it known that I, Nnns SANnsni-io, acitizen of the United States, residing `at St. Paul, in the countyof Ramsey and State of Minnesota,` have invented new and useful Improvements in a Carton-Routing Machine.

This invention relates to machines used in the manufacture of cartons for perfoianing the operation known as routing which `consists in removing or knocking out die-cut waste portionsfof carton blanks, preparatory `to folding and securing` the blanks in bor;

form.

Ags is well known, it is necessary to forcibly yremove certain waste portions of the blanks after the `outlines of the cartons have been marked by suitable dies. Heretofore, the greater part of this routing work has been done by hand, although machines which simplify the wor-k to a certain extent have been devised. These old machines are not efficient, however, for use in large factories where frequent adjustments must be made to adapt fthe machine for use lupon carto-ns of widely differing form and it is also true that theold machines known to applicant do not afford sufficiently accurate placing of the routing elements to properly and cleanly remove some of the waste portions.

It is my object vto obviate these defects by providing a machine of this kind having a series of routing elements which are inde pendently and quickly movable to the exact positions `necessary to efficiently knock out die-cut portion-sof cartons.

This invention also includes certain other features of construction which will be more fully pointed out in the following speci-fication and claims.

In the accompanying drawings, 1 have il lustrated the best form of my device at present known to me. Referring to the drawings, Figure 1 is a plan view of my machine; 2 is a fragmentary, transverse section of the same and 3 isa section through one of the routing elements and operating mechanism taken on the line 3 3 of Fig. 2.

My machine is supported in a suitable frame having end standards 4 connected by a pair of rigid, threaded rods 5 and supporting a drive shaft 6, which is parallel to the rods 5. Pivoted upon this shaft 6 is a series of routing discs 7, of like size and having blunt teeth upon their peripheries,

Serial No. 748,507.

adapted to knock out die out waste portions of carton blanks 3. A support 8 foreach of the discs 7 is freely pivoted upon the shaft 6 und has a `ifournal bearing for a short shaft E), carrying the disc 7. rThe support 8 is a plate in the form of a segment, having arcuate slot-s 10, through which `the rods `.5 extend. Pairs of nuts 11 threaded on the rods 5 adjacent to opposite faces of each of the supports 8 are adapted to be manipulated to grip said supports and hold them in any desired arcuate positions. To sevorally .drive the routing discs 7, mount sprocket wheels 12 and 13 upon the shafts 6 and 9, respectively, andconnect said wheels by an endless chain 14. The sprocket wheels 12 are caused to rotate with the shaft 6 by a longitudinal key 15' on said shaft, and said wheel is `slidable longitudinal-ly upon the shaft J6.

Obviously, the details of construction of the bearings at the upper .and lower ends of the supports 8 maybe varied without departing from the spirit of my invention, Abut l prefer to form each o-f the sprockets 12 (as shown in Fig. 3) with a long` hub 15 and to place a bushing 16 between the outer periphery of said hub and the bore of the support 8. A nut 1T is provided to maintain the proper' positions ofthe wheel 12 and bushing 16. At the lower extremity of-each support 8, the routing disc 7' is secured to a flange 18 on the shaft 9, and a bushing 1,9 is placed between said shaft and the bore 'of the support 8. .The sprocket 13 is rigidly secured to a threaded end 20 of the shaft 9. To drive the shaft 6, a pulley 21 is fined upon said shaft near the outer face of one of the standards 4.

A suitable feed carriage for a stack of the cartons S is shown in Figs. 1 and 2. Thus, a table 22 is made slidable vertically in guide ways 23. This table 22 is adapted to support a receptacle 24 for the blanks 3, the receptacle having sides 25 arranged to fit about three sides of the carton blanks, and being formed with slots 26, as shown in Fig. 1, to receive the routing discs 7. rThe slots 26 are disposed 4to register with the die out portions to be remo-ved from the carton blanks. Counter weights 27, provided with cables 28 passing ove,l pulleys 29, are adapted to facilitate vertical movement of the table 22 carrying the blanks. As will be readily understood, the receptacle .24 is so placed upon the table 22 that the Waste portions to be removed from the carton blanks proiect above the several routing discs 7.

Operation.

The machine is prepared to operate upon cartons of a predetermined shape by first constructing a receptacle 24 having slots 26 which register With the die cut portions to be removed. The receptacle 24 is noiv secured upon the table 22, as shown in Fig. 2. To adjust the positions of the discs the nuts 11. aie loosened and rotated upon the rods 5 to carry the supports 8 longitudinally upon the shaft G. Thus, the discs Z are moved to proper position opposite the several slots 26. Before tightening the nuts 11, the supports 8 are pivoted upon the shaft 6 to bring one of the discs 7 into each of the slots 2G with the periphery of the disc er:- tending to the innermost extremity of the Waste portion to be removed. rihe nuts 11 are finally tightened against the faces of the supports 8 to firmly hold the routing discs in operating position. lVhen the pulley 21 is driven from a suitable source of power in the direction indicated by an arrowv in Fig. 2, the shaft 6 will drive the shafts 9 through the sprocket Wheels 12 and 13 and chains l-t. A stack of the cartons to be operated upon is now placed in the receptacle 24. when the support 22 carrying said receptacle may be depressed to cause the teeth of the discs .7 to knock out the Waste portions of the cartons.

As will now be readily understood, by making the discs 7 extensible to the innermost extremity of each portion to be knocked ont, the difliculty heretofore encountered of tearing aivay only a part of the Waste material is avoided. By making provision for accurate, individual adjustment of the routing disc positions, I guard against mutilating the cartons, as frequently occ-urs When the rout-ing` discs are not properly placed relative to the Waste portions to be removed. Furthermore. the Work of preparing the present machine for use upon cartons of differing shapes is greatly simplified as compared with prior machines known to applicant. I also do away with the necessity for a plurality of interchangeable sets of routing` discs of differing sizes.

-Iaving described my invention What I claim as new and desire to protect by Letters Patent is:

1. In a machine of the class described, a revoluble shaft, a plurality of routing discs severally movable in arcs about said shaft, and revoluble about centers which are ofiset from said shaft, a plurality of knocking elements formed on the periphery of each of said discs to engage and remove die-cut portions of carton blanks, means for securing the several discs in didering arcuate positions relative to said shaft, and means operatively connecting said shaft with the several routing discs.

2. In a machine of the class describedt a revoluble shaft, a plurality of supports foi` routing discs pivoted upon said shaft, routing discs severally revoluble upon said supports and offset from said shaft thereon, a plurality of knocking elements formed on the periphery of each of said discs to engage and remove die-cut portions of carton blanks, independent means for securing the several supports in differing angular positions upon said shaft, and means operatively connecting said shaft with the several routing discs.

In a machine of the class described, a carriage for a plurality of carton blanks, a series of supports for routing discs severallyv movable tovvard and aivay from said carriage, rotating discs severally revoluble upon said supports, a plurality of knocking` elements formed on the periphery of each of sait. discs to engage and remove die-cut portions of carton blanks, means for securing the several supports in differing positions relative to said carriage, and means for rotating the several routing discs on said supports.

4. In a machine of the class described, a frame, a shaft and a rod extending in parallel relation one to the other in said frame, a support for a routing disc pivoted upon said shaft and formed With an arcuate slot adapted to receive said rod, means disposed on said rod to engage said support, a disc having peripheral teeth revolubly carried on said support, and means operatively connected to said shaft for rotating said disc.

5. routing machine comprising a shaft and a rod extending in parallel relation one to the other, a support for a routing disc pivoted upon said shaft and slidable longitudinally on said rod and shaft, said support being formed with an arcuate slot adapted to receive said rod, means on said rod adapted to engage said support, a routing disc revoluble upon said support, and means operatively connected to said shaft for rotating said disc therefrom.

6. A routing machine comprising, a frame, a horizontal shaft and a threaded rod eX- tending in parallel relation one to the other in said frame., a series of supports for routing discs severally pivoted upon said shaft and formed with arcuate slots adapted to receive said rod, nuts threaded on said rod and arranged to engage opposite sides of said supports, a routing disc revoluble upon each of said supports, driving means severally connecting said shaft to said discs and a feed carriage adapted to deliver a stack of carton blanks to said discs.

In testimony whereof I have hereunto signed my name to this specication.

NELS SANDBERG.-

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