US2048767A - Automatic web splicing machine - Google Patents

Description

July 28, 1936.

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59 Claims.

The principal objects of this invention are to provide a practical and smoothly working machine for replenishing paper rolls without any diminution of speed whatsoever on the part of the press and in such a form as to require a minimum amount of attention on the part of the operator; to provide, cooperating therewith, means for bringing the new roll up to web speed at its surface; to provide manually initiated, automatic means for moving the roll-supporting device to bring the fresh roll to the proper position for splicing and thereafter to the running position; to provide improved means for moving the path of the web to contact with the pre-pasted points on the in-coming roll; to provide improved means for severing the old web; to provide improved means for moving the roll-supporting device; to provide means for locating the pasted papers on the delivery to bring the pasted roll into the tension straps in running position; to provide means for warning the operator that a splice is coming through; to provide an improved braking arrangement for emergency stops by which a combination of forces acting on the surface of the roll and through the center of the roll tend to retard the speed of the roll to keep it in its proper relation to the press speed; to provide for reducing the voltage on the magnetic clutch as the roll is carried into the tension belts; to provide means for taking care of normal changes which are expected in a roll-supporting device for carrying rolls of full or fractional width; to provide these features in combination with each other so related that they will synchronize perfectly at very high speeds, and to provide for the operation of all these mechanisms in a very expedient manner so that a minimum amount of energy is absorbed and a minimum amount of time employed in the whole operation.

Other objects and advantages of will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. 1 is an end view of a preferred embodiment of the invention as applied to a three arm rollsuppo'rting structure;

Fig. 2 is an enlarged end view showing the mechanism for lowering the brush arm and the adjustable switch bracket for determining the stopping of the reel rotation after splicing;

' Fig. 3 is aside view of the drive for lowering and raising the brush arm;

Fig. 4 is a fragmentary view, taken as indicated by the arrow 4 in Fig. 3, showing the drive to the multiple switch;

the invention Fig. 5 is a fragmentary view, taken as indicated by the arrow 5 in Fig. 3, of the lift motor showing the segment which raises and lowers the brush arm;

- Fig. 6 is an edge view of the brush arm proper 5 showing the brush and knife resetting mechanism with the brush arm in operating position but with the brush drawn back;

Fig. 7 is a detailed view in cross section on the line l -l of Fig. 3, of the two segments used in 10 lowering the brush arm;

Fig. 7a is a complete elevation of the brush arm; I

Fig. 8 is a partial elevation of the central part of the brush arm as indicated by the arrow 8 in Fig. 6; a

Fig. 9 is a view of the brush resetting device in section on the line 99- of Fig. 8;

Fig. 10 is another view of the brush resetting device in section on the line |0l0 of Fig. 8;

Figs. 11 and 12 are detailed views of the gear and clutch collar used in resetting the knife.

Fig. 13 is 'a partial elevation of the brush arm on the left end carrying the operating device for the monkey-switch, showing the shear pin ar- 5 rangement on the brush arm;

Fig. 14 is a view looking in the direction indicated by the arrow l4 in Fig. l3,' showing a double-ended latch arrangement for operation of the fmonkey-switch rod; 7

Fig. 15 is a sectional view of the same on the line l5-l5 of Fig. 13;

Figs. 16, 1'7, and 18 are detailed views of the bevelled gear, operating clutch and flange used in setting in the monkey-switch toe, taken respectively in section. on the lines Iii-l6, l'l--l|, and Iii-l8 of Fig. 13;

Fig. 19 is an elevation of a portion of the right end of the brush arm showing the brush and knife tripping mechanisms;

Fig. 20 is an end view of the same, partially in section on the line 20-20 of Fig. 19;

Fig. 21 is a. view of the lower part of the brush arm including a complete view of the monkeyswitch rod and its two positions with reference to the edge of the web;

Fig. 22 is a section taken on line 22-22 of Fig.

21 showing details of the monkey-switc Fig; 23 is a. section on line 23-23 of Fig. 21 showing an end view of the relation between the brush, the paper and the monkey-switch lever before the latter is tripped;

Fig. 24 is an intimate view in section on the line 24-24 of Fig. 3 of the safety arrangement carried on the'end of the brush arm;

Fig. 27 is an end view showing the speed-setting device used to compensate for different roll diameters;

Fig. 28 is-a detailed view on enlarged scale of the ratchet and pawl arrangement for holding this speed setting once it is made;

Fig. 29 is a plan, as indicated by the arrow 29 in Fig. 27, of part of the drive to the incoming roll showing the manner in which the variable speed transmission is used.

Fig. 30 is an end view looking in the direction of arrow 30 in Fig. 27 showing the link motion used in transmitting the speed compensation for roll diameters.

Fig. 31 is a cross sectional view of the measuring relay;

Fig. 32 is an end view of one of the arms of the spider of the reel showing the band brake construction for stopping the butt after the old web is severed;

Fig. 33 is an elevation of the above, as indicated by the arrow 33 in Fig. 32, showing a view of the safety switches for preventing damage to the brush arm;

Fig. 34 is a side view showing the construction of the adjustable butt switch for varying the size of the expiring roll at which the splicing mechanism operates;

Fig. 35 is an end view of the same, as indicated by the arrow 35 in Fig. 34;

Fig. 36 is an end view of the kicker arrange- .ment placed on the folder for locating the pasted papers;

Fig. 3'1 is an elevation as indicated by the arrow 31 in Fig. 36; Fig. 38 is a plan showing the manner in which the pasted papers are set askew on the delivery,

Figs. 39 and 40, together constitute a wiring diagram and Fig. 41 is a fragmentary diagram showing the position of the elements of the multiple switch when the brush arm is lowered.

In the operation of newspaper presses, especially of the modern type where paper is fed from a roll, it is very important that the replenishing of a paper roll, when one has expired, be done in an expedient manner so that a minimum amount of energy and time is absorbed. This invention has for its purpose the replenishing of paper rolls without any diminution of speed whatsoever on the part of the press, and with a minimum amount of attention on the part of the operator. It performs the functions of bringing the roll up to proper speed, i. e., the same surface speed as that of the web, rotating the roll supporting device to the proper position for splicing, moving the path of the web to contact with the pre-pasted points on the incoming roll, severing the old web, moving the roll supporting device into the web tensioning belts to the running position, locating the pasted papers on the delivery, warning the operator that a. splice is coming through, and providing for a braking arrangement for emergency stops wherein a combination of forces acting on the surface of the roll and through the center of the roll tend to retard the roll in its proper relation to'the press.

Referring to Fig. 1, it will be seen that a shaft i provided with a groove I is mounted in the well known pedestals at each end and carries attached thereto spiders for the proper mounting of the paper rolls I, M, and N. Straps 2 are attached, one end to a rod 3 carried in brackets 3, secured to the floor, the other end being attached to one end of a lever 5 which is pivoted at 6 on a bracket secured to the frame 1. The other end of the lever 5 carries a link 8 for the mounting of weights 9. This arrangement provides proper tension for the web W which passes over a bending roll l0, tension roll ll, bending roll l2, feeding roll l3, bending roll l4, and so on to the printing press, not shown.

Provisions are supplied as in the customary type of reel so that the reel may be rotated to bring the rolls successively from loading to pasting position and then to running positions and provisions are made for shifting the rolls endwise to maintain side register. The tension device and reel described above have no particular connection with the web splicing machine, it being realized that this reel and tension device could be used without employing the rest of the mechanism and that the invention can be applied to other roll supporting devices without departing from this invention. It will be understood that the particular form of reel and tensioning device described above is incidental to, but forms no part of, this invention.

One of the principal functions in uniting web rolls is bringing together the old web and the incoming roll. The present invention employs the method of bringing the incoming roll up to the same surface speed as that of the web and then pressing the two together.

The proper relationship between the web and the roll is accomplished by two motions. First, a brush arm I5 is lowered over which the web travels, contacting with an oscillatable brush 5|. The reel then moves forward until the incoming web roll is a predetermined distance from the web, when by this combination of movements the proper set-up is accomplished. The brush arm carries not only the oscillatable brush for applying the old web to the new roll but a knife 13 for severing the old web and the mechanism for stopping the reel at the proper distance from the web.

In Fig. 6 is shown the brush arm frame l5 described, to the shaft I6. At both ends of the.

shaft I6 are secured segments 23 for meshing respectively with two segments 24 mounted on two shafts 25. The inner end of each shaft carries a crank arm 26 to which a spring rod 21 is pivotally attached. (See Figs. 24 and 25). The spring rod 21 pierces a poppet 28 which is pivotally carried on a shear pin arm 29, this latter arm being mounted loosely on the shaft l6 and held in proper relation with the brush arm frame 15 by a shear pin 30. The spring 3| abuts against the poppet 28 and is held in position by a lock-nut 32. Attached to the spring rod 21 is a strap 33 for the mounting of a safety switch 34, whose operating roller 35 is positioned

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