US1749546A

US1749546A - Web-cutting mechanism

Info

Publication number: US1749546A
Application number: US273672A
Authority: US
Inventors: Reynolds Howard
Original assignee: R Hoe and Co Inc
Current assignee: R Hoe and Co Inc
Priority date: 1928-04-28
Filing date: 1928-04-28
Publication date: 1930-03-04
Anticipated expiration: 1947-03-04

Description

H. REYNOLDS WEB CUTTING MECHANISM 4 Sheets-Sheet 1 Filed April 28, 1928 INVENTOR Mai-ch 4, 1930.

March 4, 1930.

H. REYNOLDS 1,749,546

WEB CUTTINGMECHANISM Filed April 28. 1928 4 Sheets-Sheet 2 H, REYNOLDS 1,749,546

WEB CUTTING MECHANISM 4 Sheets-Sheet 3 7 Filed April 28. 1928 March 4, 1 930.

March 4, 1930. REYNOLDS 1,749,546

WEB CUTTING MECHANISM Filed April 28. 1928 4 Sheets-Sheet 4 INVENTOR 7WM ATTYs '10 large number of sheets.

Patented Mar. 4, 1930 TES * UNITED STA PATENT oFFicE HOWARD REYNOLDS OF NEW ORLEANS, LOUISIANA, ASSIGNOR TO R. HOE & (30., INCL, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK WEB-CUTTING- MECHANISM Application filed April as,

This invention relates to certain improvements in cutting mechanisms for cutting or severing a large number of associated webs or sheets coming from the formers of a print- 6 ing machine.

In cutting products from a large number of associated webs or sheets, that is, products of forty pages or more, diliiculty has been experienced in effecting a clean cut of such a It'has been proposed to overcome this difficulty by the use of a reciprocating cutting mechanism which will operate to produce a clean cut at the high speed required in high speed rotary machines, means being provided for reciproeating the cutting mechanism to effect the cut.

In this type of cutting mechanism the cutting element is reciprocated by a motor. It is desirable that the cutting mechanism be Y driven so that it will. start its reciprocating motion prior to the starting of the press, so that when the first of the associated products which are to besevered reaches the cutting mechanism the latter will be operating to make the out. It is further desirable that the cutting mechanism continue its operation for a short period after the stoppage of the press so as to effect a cutting on the last of the associated products which maybe forwarded to the cutting mechanism.

It is the especial object of the present invention to provide an improved construction in which there is provided a motor for oper- F atmg the cuttlng mechanism and means whereby this motor may be caused to operate the cutting mechanism before the press starts.

while the press is running, and after the i press is stopped.

A further object of the invention is to produce a simple construction for effecting, this and. one which is readily controlled by the press operator.

With these and other objects not'specifically referred to in view, the invention consists in certain novel parts, arrangements and combinations which will be described in con- I 'nection with the accompanying drawings and the novel features pointed out in the claims hereunto annexed.

1928. Serial No. 273,672.

In these drawings,-

Figure 1 is a diagrammatic end elevation of the folder end of a printing machine showlng the formers and the cutting mechanism;

Figure 2 is an end view, partly in section and partly broken away, of a folding and utting cylinder embodying the invention;

Flgure 3 is a side elevation, partly in section, of part of the mechanism shown in Figure 2; Figures f and 5 are detail plan views of part of the cutting mechanism, and

Figure 6 is a diagrammatic view of the cir cuits for efiecting the desired operation of the press motor and the motor for operating the cutting mechanism.

Referring now to these drawings and first to Figures 1 to 5, the parts of the mechanism are suitably supported in

framing

1, 2, which may be of any suitable or desired configuration. In the particular machine chosen to illustrate the invention, the products to be cut are associated over

formers

3, 4, 51 191 products passing to the cutting and folding mechanism indicated generally at 5, 6 in Figure 1, two such mechanisms being shown. The products are delivered, after cutting and folding, to deliveries of any suitable type, as fly deliveries 7 8. 1

The particular mechanism selected to illustrate the invention is a folding and cutting cylinder, the cylinder being provided with sheet taking devices, folding blades, one of which is shown, and reciprocating cutting mechanism, but it will be understood that as to certain features of the invention it is not restricted to a cylinder which is a folding cylinder.

In the particular construction illustrated,

however, there is provided a rotary cylinder 9 convenient manner. This cylinder is provided with a reciprocating cutting mechanism which may vary widely in construction. In the particular construction illustrated there are two'sets of these cutting mechanisms, indicated generally by the

numerals

39, 40, arranged at opposite points in the cylinder, the cutting mechanisms cutting against a cooperating abutment in the form of a small cylinder41. While the particular character of the cutting mechanism may be varied, as illustrated, each cutting mechanism includes a cutter bar 42 in which are mounted cutting teeth 43, these being arranged in pairs and removably secured in the bar 42 by dowels indicated at 44.

Means are provided for rapidly reciprocating this cutter bar so that a thick product will be cleanly and effectively cut'from a large number of associated webs. The

specific construction of the means for op erating the cutter bar may be somewhat,

varied, but in the preferred construction will include a separate motor 45 supported in

brackets

46, 47 mounted within the cylinder.

The means for operating the cutter bar from the motor may vary considerably in construction, but in the particular mechanism illustrated these means are in the form of gearing. In the specific construction illustrated the armature shaft 48 carries a driving gear 49 which, through intermediates 50, 51",;drives

gears

52, 53, these gears and intermediates being mounted on studs 54 supported in a web 55. The means by which the cutter bars 42 are reciprocated are the same and a description of one will suiiice for both.

As shown, the hub of the gear 52 (see Figure 3) carries a miter ear 56 which meshes with an eccentric gear 5 supported on a stud 58 mounted in a bracket 59 secured to the cylinder head 60. This eccentric gear has secured therein a pin 61 which works in an open ended slot 62 in a projection 63 formed on a block 64 which has a reciprocating movement in a recess 65 (see Figures 4 and 5) formed in the wall of the cylinder 9. The knife bar 42 is mounted in this block preferably so as to have a sliding movement there in, so that it can be readily removed for replacement or repair of the cutting teeth. As shown, the block 64 is provided with a movable clamping member 66 which is secured to the block by screws 67 68. If it is dcsire'd to remove any of the teeth, itis only necessary to remove screw 67 whereupon the bar can be slipped to the right, as shown in Figure 5, so as to clear projection 69 under which one end of the bar is positioned, the bar being provided with an enlarged recess 70 which receives the screw 68. With this construction the bar may be readily removed for replacement or repair of the cutting teeth.

In accordance with the invention, means are provided whereby the motor 45, which drives the cutting mechanism, may be started before the starting of the press motor and may continue its operation after the press motor has stopped, and a controller and circuits for effecting this are diagrammatically shown in Figure 6. Referring to Figure 6, there is provided a controller arm 11 which is operated through worm gearing 11 from a small pilot motor 12, this controller arm being suitably mounted at any desired point, as at the controller station of the press. One end 11 of the arm 11 is arranged to engage a number of contacts 26, 13, throughwhich the operation of the press motor 14 is controlled. The other end 11 of the arm 11 is arranged to engage

contacts

23 and 15 for controlling the operation of the motor 45, which operates the cutting mechanism. The armature of the pilot motor 12 is indicated at 17 and the fields at 18, 19, and a switch 20 is provided for controlling the pilot motor 12, this switch operating between two contacts21 and 30. When the switch is moved to engage contact 21 a circuit is closed, which may be traced from line L switch 20, contact 21, field19 and armature 17 of the pilot motor, conductor 22 to line L which operates to turn the arm 11 in a clockwise direction, which results in starting the motor 45 whenthe end 11 of the arm 11 engages contact 23.

When this occurs the circuit to motor 45 may be traced from line L through 11*, contact 23, a resistance 24, contact 15, motor 45 to line L The field circuit of the motor 45 extends from line L through endll of arm 11, contact 23, field 25 to line L The cutting motor 45 is thus started and further movement of the end 11 of the arm 11 cuts 2 out resistance 24, thus bringing motor 45 to full speed when end 11". engages contact 15.

L The field circuit of the press motor may be traced from line L through arm 11,

contact 26, conductor 28, field winding 29 to line L The press motor is thus started and the continued motion of arm 11 cuts out a part or'all of the resistance 13 and brings the press motor to the desired speed.

If now the switch 20 be moved away from contact 21, the pilot motor 12 stops, the press motor 14, however, continuing to run atthe desired speed. If the operator moves the switch 20 to engage the contact 30, the pilot a motor 12 will move in the opposite direction, the circuit being traceablev from line L switch 20, contact 30, field 18 and armature 17 of the pilot motor, conductor 22 to line L This results in operating the pilot motor i ting mechanism has been provided for opand last products that are forwarded from i the press. With the construction shown and described a very convenient and efficient cuterating on thick products.

While the construction shown and described is a preferred one to effect the objects of the invention, it will be understood that various forms of cutting mechanism may be employed and the cutting mechanism may be operated from the motor through connections other than gear connections, and the invention therefore is not to be restricted to the construction'and arrangement of the parts shown and described.

What I claim is:

1. In a printing machine, the combination of a press motor, a cutting cylinder driven by the press motor,a cutting element carried by the cylinder, a power means independent of the press motor for effecting a movement of the cutting element, and means for actuating the power means before the starting of the press motor.

2. In a printing machine, thecombination of apress motor, a cutting cylinder driven by the press motor and having a reciprocatingcutting element, a power means independent of the press for reciprocating the cutting element, means for actuating the power means before the starting of the press motor, and means for operating the power means after the press motor has stopped.

3. In a printing machine, the combination of a press motor, a cuttingcylinder driven by the press motor, a cutting element carried by the cylinder, a motor for effecting a movement of the cutting element, and means for starting the cutting motor before the starting of the press motor.

4. In a printing machine, the combination of a press motor, a cutting cylinder driven by the press motor, a reciprocating cutting element carried by the cylinder, a motor for reciprocating the cutting element, means for starting the cutting motor before the starting of the press motor, and means for operating the cutting motor after the press motor has stopped.

5. In a printing machine, the combination of a press motor, a cutting cylinder driven by the press motor, a reciprocating cutting element carried by the cylinder, a motor mounted in the cylinder for reciprocating the cutting element, and means for starting the cutting motor before the starting of the press motor. v

6. In a printing machine, the combination of a press motor, a cutting cylinder driven by the press motor, a reciprocating cutting element carried by the cylinder, a motor mounted in the cylinder for reciprocating the cutting element, means for operating the cutting motor to start before the starting of the press motor, and means for operating the cutting motor after the press motor has stopped.

7 In a printing machine, the combination of a press motor, a cutting cylinder driven by the press motor, a reciprocating cutting element carried by the cylinder, a motor for reciprocating the cutting element, a circuit for the press motor, a circuit for the cutting motor, and a controller acting to close the circuits, the circuit of the cutter motor being closed first.

8. In a printing machine, the combination of a press motor, a cutting cylinder, a reciprocating cutting element carried by the cylinder driven by the press motor, a motor for reciprocating the cutting element, a circuit for'the press motor, a circuit for the cutting motor, and a controller acting to close the circuits, the circuit of the cutter motor being closed first and opened later than that of the press motor.

9. In a printing machine, the combination of a press motor, a cutting cylinder driven by the press motor, a cutting element carried by the cylinder, 21 power means independent of the press motor for effecting a movement of the cutting element, and means for actuating the power means before the starting of my hand.

HOWARD REYNOLDS.