US1537285A - Side-gauge-locking device for slitters - Google Patents

Description

' May 12,1925. 1,537,285

H. BANKE SIDE GAUGE LOCKING DEVICE FOR SLITTERS F119;! Oct. 16, 192.2 2 Sheets-Sheet 1 :gINViTOZ.

' ATTORNEY May 12, 1925 1.531285 H. B ANKE I v SIDE GAUGE LOCKING DEVICE FOR SLITTERS Filed Oct, I6, 1922 .2 Sheets-Sheet 2 Patented May 12, 19 25.

UNITE specification.

This invent on relates to sheet metal slitting machines" and more particularly to means in such machines for preventing delivery of the sheets to the cutting, or slitting elements until completely squared up, or

aligned.

The invention contemplates a construction in which gauging devices are employed at the side as well as at the front of the table across which the sheets are fed and has for a principal object the provision of meansfor preventing delivery without its first coming into contact with both the side and. front gai1gingdevices.

It is also a purpose of the invention to provide a practical and economical means for automatically insuring proper alignment of the successive sheets as they are fed into 7 the machine.

Other objects and advantages of themvention will be apparent as it is better understood from the following description, which, taken in connection with the accompanyinn drawings, discloses a preferred embodiment thereof;

Referring to the drawings,

Figure 1 is a plan view, partly broken away, of a slitting machine in which my invention is embodied; V I

Fig. 2 is a detail view of the gearing emfor operating the cutter shafts, and showing also the rock shaft bearing;

i is a sectional view taken substantially on the line 3- -3 in Fig.1 and showing front gauging finger and its associated ploycd Fig. 3

locking mechanism;

Fig. 41 is adetail section taken through the upper part of one of the gauging fingers, showing its adjustable mounting;

'Fig. 5 is a section taken substantially on the line 55 of Fig. 1 and showing the lock- 1) STATESPATENT OFFICE.

HERBERT BANKE, or MAYWOOD, ILLINOIS, ASSIGNOR T0 AMERICAN can COMPANY, on NEW YORK, N. Y., A CORPORATION or NEVJ JERSEY.

sInIi-GAUen-LooKINe DEVICE roe sLIrrEns.

Application filed October is, 1922. Serial No. 594,944.

HERBERT BANKE, a gauge; and

mounted,

of a sheet tot-he cutters ing mechanism associated with the side F g. dis a view taken substantially on the section line 66 in Fig. 1.

The apparatus illustrated on the drawings comprises a table 11, which is suitably supported from the floor and upon which the operating mechanism of the machine is The slitting mechanism comprises a series of rotary knives 12 and 13, which are mounted respectively on horizontal shafts ll and 15, which shafts ai'e driven by means of a pulley 16 which is mounted on the lower shaft 14:. A gear 17 on said shaft 14 meshes with a second gear 18 on the shaft 15, whereby both said shaftsare driven in desired manner to accomplish the cutting action. A rocksliaft 19 is mounted above the cutters, having hearings in ex tensions 20 of brackets 21 and 22. gauging fingers 23 are adjustably mounted upon this shaft, being secured by a set screw 24 and clamping screws 25 and 26 to a block cam 27 which is clamped upon said shaft by means of a bolt 28., Said cam is provided at the front with a guideway in which the upper vertical end 29 of a finger 23 is mounted, and said end 29 is providedwith a slot- 31 permitting adjustment thereof.

A guard 32 is securedto the table 11 near the front thereof and is provided at the top with a grooved guide 33 in which are adjustably secured brackets 34 to which locking fingers 35 are pivotally attached at One of said locking fingers is associated with each gauging finger 23and their functionwill be, apparent upon inspection of Figure 3. It will be noted that the fingers have their upper ends held'in contact with a shoulder 37 on the block 27 by means of a spring 38, and thus prevent rotation of the shaft 19 until disengaged from said shoal-i der by means of an advancing sheet bearing against the lower ends 39 of the fingers which are disposed in the path of the sheets and in advance of the gauging fingers 23. Since either of the locking fingers 35will serve to prevent rotation of the shaft 19, it is obvious that a sheet must act upon each Front of them in order to permit it to pass and thus the front edge must be square before a sheet can be delivered to the rotary cutters 12 and 13. The rotation of the shaft 19 under the influence of the gauge fingers 23 is yieldingly resisted and the shaft returned to normal position by a spring secured at one end to an arm l0 on said shaft and at the other end to the frame.

I also provide a side gauging device, which consists of a lever ll pivoted at 4:2 to a bracket 48 which is adjustably secured to the table 11. In order that a sheet may have its proper lateral position, it is necessary that it contact with this side gauging device, as well as the front gauging fingers 23 and I, therefore, provide means for insuring such contact before the sheet can pass. This means comprises a vertical locking bar H, which is pivotally connected at to an extension of the bracket 43 and is normally pressed away therefrom by means of a leaf spring 46. Said bar M is disposed beneath an arm 47 which is secured upon the shaft 19 by means of a screw bolt 48. hen in this position, rotation of the shaft 19 is prevented by the side locking device, as well as by the fingers 35.

Referring now to Fig. 6, it will be observed that when a sheet, indicated in this figure by the character 49, comes in contact with the lever 41, said lever acts upon a projection 51 011 the lowerpart of the bar d4: and forces said baragainst the tension of the spring 46 from beneath the arm 4-7, thus releasing the shaft 19. lVhen the sheet has then released the front locking mechanism, by contact with the separate fingers 35, the rock shaft 19 may rotate under the influence of the gauging fingers 23, which are provided at their lower ends with rollers 52 and adapted to be lifted by the force of the advancing sheet. Table extensions 53 are provided adjacent said gauging fingers 23 and serve to support the sides of the sheet as it passes between the rotary cutters.

From the foregoing, it will be manifest that a sheet must be brought first into contact with the side gauge ll and then with the front gauges, before the shaft 19 can be rotated, and thus accurate alignment is insured at the time the sheet is delivered to the cutters. A spring 5'' is provided be tween the forward end of the lever 41 and the bracket a3 and serves to normally hold said lever in its outer position while permitting it to recede under the influence of a moving sheet. This spring permits the passage of an irregular sheet port-ion after the front of the sheet has been engaged by the cutters and also normally holds the bar at in its locking position.

It is thought that the invention and many of its attendant advantages will be understood froin the foregoing description, and

it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention, or sacrificing all of its material advantages, the form hereinbefore described being morely a preferred embodiment thereof.

I claim:

1. in a sheet metal slitting machine, the combination of slitting elements, a table supporting the sheets as they are fed to said elements, front and side gauging devices for squaring the sheets upon said table, and locking means for said gauging devices rcquiring contact by the sheets with each of said devices prior to their being advanced to said cutting elements.

2. Ina sheet metal slitting machine, the combination of slitting elements, a table across which the sheets are fed to said elements, gauging devices adaptedto engage edges of the sheets, which edges are angularly disposed relative to each other, and means for preventing advance of the sheets to the slitting elements until after they have acted upon each of said devices.

3. In a sheet metal slitting machine, the combination of slitting elements, a table across which the sheets are fed to said elements, gauging devices at the front of the table, meansfor locking said devices to prevent passage of a sheet except upon contact with each thereof, side gauging means, and locking means preventing the advance of a sheet'to the slitting elements without contactwith said side gauging means.

4. In a sheet metal slitting machine, the

combination of slitting elements, a support across which the sheets'are fed to said elements, and means for squaring the sheets upon said support, said means comprising a plurality of front gauging fingers, and a side gauging device, and means requiring contact of a sheetwith each of said fingers and said de ice prior to its being advanced to the cutting elements. 5. In a sheet metal slitting machine, the combination of slitting elements, a supportacross which the sheets are fed to said elements, a plurality of gauging devices adapted to engage edges of an advancing sheet, which edges are at an angle to each other, and means requiring contact of a sheet with each of said devices prior to its entry into the slitting elements.

(3. In a sheet metal slitting machine, the combination of cutters, a table upon which the sheets are advanced to said cutters, a plurality of gauging lingers supported above said tabl near the front thereof, a rock shaft upon which said fingers are su ported, gaugin means at the side of tie table, and means for preventing rotation of said rock shaft to remove said front gauging l'igers from the path of the sheet, except upon contact of said sheet with both said gorted, means associated With each of said u side gauging means and said fingers, 'ngers for preventing rotation of the shaft 1 7. In a sheet metal slitting machine, the except When a sheet acts upon said fingers combination of cutters, a table upon which simultaneously, side gauging means, and

the sheets are advanced to said cutters, a means for preventing rotation of said shaft plurality of gauging fingers supported unless the sheet act also upon said side above said table near the front thereof, a gauging means. 7 rock shaft upon which said fingers are sup- HERBERT BANKE.

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