US1886525A

US1886525A - Electric motor drive for web printing, longitudinal folding and transverse cutting mechanism

Info

Publication number: US1886525A
Application number: US375828A
Authority: US
Inventors: Calvert B Cottrell
Original assignee: Individual
Current assignee: CB Cottrell and Sons Co
Priority date: 1929-07-03
Filing date: 1929-07-03
Publication date: 1932-11-08
Anticipated expiration: 1949-11-08

Description

Nov. 8, 1932. c. B. COTTRELL, 3D 1,886,525

' ELECTRIC MOTOR DRIVE FOR WEB PRINTING, LONGITUDINAL FOLDING, AND TRANSVERSE CUTTING MECHANISM Filed July 5, 1929 3 Sheets-Sheet 1 ATTORNEYS 0 0 O o gy! M7? 2. .41

NOV. 8, c B COTTRELL 3 ELECTRIC MOTOR DRIVE FOR WEB PRINTING,'LONGI TUDINAL FOLDING, AND TRANSVERSE CUTTING MECHANISM Filed July-3., 1929 3 Sheets-Sheet 2 'IPIVENT'OIR- I "ATTORNEY I 1932- c. B. COTTRELL, 8D 1,886,525

ELECTRIC MOTOR DRIVE FOR WEB PRINTING, LONGITUDINAL FOLDING, AND TRANSVERSE CUTTING MECHANISM Filed July 3. 1929 3 Sheets-Sheet 5 INVENTOR 3 ATTORNEYS Patented Nov. 8, 1932 UNITED STATES PATENT; OFFICE CALVERT B. COTTRELL, 813., OF WESTERI-Y, RHODE ISLAND, ASSIGNOR TO 0. B. COTTRELL & SONS COMPANY, OF WESTEBLY, RHODE ISLAND, A CORPORATION OF DELAWARE ELECTRIC MOTOR DRIVE FOR WEB PRINTING, LONGITUDINAL FOLDING AND TBANSVERSE CUTTING MECHANISM Application filed July 3, 1929; Serial No. 375,828.

My invention relates broadly to an electric motor drive for web printing, longitudinal folding and transverse cutting mechanisms, which drive includes master and auxiliary motors and control means for maintaining the auxiliary motors at predetermined speeds relative to the master motor.

My invention comprises a plural electrlc motor drive for the mechanism for prlntmg on a running web, for the mechanism for folding the printed web together with associated webs longitudinally into tubular form and for the mechanism .for cutting the so folded associated webs transversely into tubular bag blanks and the mechanism for feeding the so folded web from the longitudinal folding mechanism to the cutting mechanlsm; novel control means being provided whereby the variations in speed of the auxiliary motors will be automatically corrected to maintain the auxiliary motors at predetermined relative speeds with respect to the speed of the master motor.

My invention also comprises web tenslon controlled means for varying the speed of the auxiliary motor for the longitudinally folded associated webs as they are fed to the cutting mechanism and also where a plurality of printing units are provided for varying the speed of the auxiliary motor for one of the printing units to bring the prmtingumts 1nto proper register with respect to the web. A practical embodiment of my inventlon isrepresented in the accompanying drawings, in which Figs. 1 and 1 represent a diagrammatic plan view showing the electric equipment for a four color two printing unit rotary web 40' printing press together with means for folding the printed web together with associated webs longitudinally into tubular form and with means for cutting the so folded webs transversely into bag blanks;

Figs. 2 and 2 represent a diagrammatic side view of the same; and

Fig. 3 represents a detail view of the mechanism for shifting the belt which connects the I printing unit auxiliary motor With the rheostat control device.

Fig. 4 represents one of the control mechanisms on a much larger scale.

It will be understood that the several arts of the electric equipment shown may of any well known or approved construction.

The supply roll for the web to'be printed is denoted by 1 and the supply rolls for the webs to be associated with the printed web are denoted by 2, 3, {l and 5. The web 6 is led from the supply roll to and through the first printing unit which is shown as comprising an impression cylinder 7 and its two coacting form cylinders 8 and 9. From thence the web 6 is led to andthrough the second printing unit which is herein shown as comprising an impression cylinder 10 and its two coacting form cylinders 11 and 12. From thence the printed web 6 is led to a point 13 where it is combined with the unprinted webs from the supply rolls 2, 3, land 5. The combined webs then pass between the rollers 14, 15 to the longitudinal folding" device 16, of any well known or approved form where the so associated webs are folded longitudinally into tubular form. The so longitudinally folded webs are then passed between the rolls 17, 18 which form a part of the folding mechanism. The said rolls serve to draw the associated webs through the folding device 16 and feed them between the

rotary cutters

19 and 20 of the cutting mechanism which severs the longitudinally folded webs transversely into sections.

The first printing unit is shown as driven by a master electric motor 21 and the second noted by 24. These motors derive their power from a motor-generator 25 through its manually operated voltage control 26 which controls the speeds, by varying thevoltage of the generator, orthe master motor 21 and the normal relative speeds of the

auxiliary motors

22, 23, 24.

The master motor 21 drives a longitudinal shaft 27 through a bevel gear drive 28, which shaft has a bevel gear drive 29 with a cross shaft 30 carrying a belt pulley 31. The shaft 32 of the auxiliary motor 22 is provided with a cone pulley 33 which is connected by a belt 34 with a cone pulley 35 of a shaft 36 which also carries a belt pulley 37. Pulleys 38,39 are carried by the rock levers 40, 41, the free ends of which levers are connected by a flexi ble connection, in the present instance a sprocket chain 42 with a sprocket 43 carried by the axis of the contact arm 44 of a control rheostat 45. A driving belt 46 passes around the pulleys 31, 37, 38, 39. Springs 47, 48 serve the double purpose of holding the levers 40, 41 and the rheostat arm 44 in their neutral positions and also of holding the driving belt 46 under slight tension.

' The means for varying the tension of the web as it passes from one printing unit to the other printing unit to bring the printing units into register with the web is as follows:

The web 6 passes over a roller 49 held under upward stress by a weighted flexible connection 50 tending to take up the slack in the web between the two printing units. This roller 49 is connected by a rod 51 with a bell crank lever 52 which, in turn, is connected by a rod 53 with a belt shifting fork 54 which embraces the belt 34. -The web .6 on its way from the first printing unit to the roller 49 passes between rollers 55, 56 carried by a two armed lever 57, 58 which is provided with a hand micrometer adjustment 59.

The shaft 27 is connected to a short vertical shaft 60 by a bevel gear driving connection 61 and the shaft 60 is connected to a longitudinal shaft 62 by a bevel gear driving connection 63. This longitudinal shaft 62 is connected to a transverse shaft 63* through a driving connection 64, which shaft carries a belt pulley 65. The shaft 66 of the auxiliary motor 23 carries a cone pulley 67 which is connected by a belt 68 with a reverse cone ulley 69 on a shaft 70 which also carries a Belt pulley 71. Pulleys 72,73 are carried by rock levers 74, 75, the free ends of which are connected by a flexible connection. in the present instance a sprocket chain 77 with a sprocket 78 on the shaft of the contact arm 79 of the control rheostat 80. A driving belt 81 passes around the pulleys 65. 71, 72. 73. Springs 82, 83 serve the double purpose of holding the levers 74. 75 and rheostat arm 79 in their neutral positions and also ofholding the driving belt 81 under slight tension.

The shaft 62 is also connected to a. transverse shaft 84 through a bevel gear driving connection 85. which shaft carries a belt pulley 86. The shaft 87 of the auxiliary motor 24 carries a cone pulley 88 which is connected by a belt 89 with a reverse cone pulley 90 on a shaft 91. which shaft also earries a belt pulley 92. Pulleys 93, 94 are carried by two rock levers 95, 96. the free ends of which are connected by a flexible connection. in the present instance a sprocket chain 97 with a sprocket 98 carried by the shaft of the contact arm 99 of the control rheostat 100. A belt 101 passes around the pulleys 86, 92, 93, 94. Springs 102, 103 serve the double purpose of holding the levers 95, 96 and rheostat arm 99 in their neutral positions and also of holding the driving belt 101 under slight tension.

The web tension controlled means for controlling the movement of the belt 89 on its

reverse cone pulleys

88, 90, is herein shown as a roller 104 held under upward stress by a weighted flexible connection 105 tending to take up the slack in the associated and folded-webs as they pass from the folding mechanism to the cutting mechanism. This roller 104 is connected by a rod 106 with a bell crank lever 107 which, in turn, is connected to a belt" shifting yoke 108 which embraces the belt 89.

The control mechanisms per se hereinabove described form the subject matter of my copending application filed of even date herewith, its Serial Number being 375,827.

The operation'of the device is as follows:

When the auxiliary motor 22 of the printing mechanism is running at a predetermined speed with respect to the master motor 21, the rock levers 40, 41 and rheostat arm 44 are held in their neutral positions. Should the auxiliary motor start to run ahead or behind the additional pull on the belt 46 in the one or the other direction will cause the rock levers to move in opposite directions, thereby causing the rheostat arm 44 to move along its contacts in the one or the other direction from its neutral position, thereby causing the auxiliary motor to slow down or speed up to its predetermined relative speed with respect to the master motor. Y

Should the web thus run ahead or behind between the two printing units the additional compensating device will come into action to shift the belt 34 to vary the speed of the auxiliary motor 22. The micrometer adjustment hereinabove described is used for bringing the two printing unit-sinto register on the web.

The compensating devices for the web cutting and feeding mechanisms work quite similarly to control the movements of the

auxiliary motors

23 and 24. The auxiliary motor 24 is also controlled by the web tension means to vary its speed as required, to properly feed the folded and associated webs to the cutting mechanism.

From the above description it will be seen that any variation in the speeds of the auxiliary motors will be automatically correct ed to bring them into their relative speeds with respect to the master motor and also that any variation in the register in the first and second printing units can be compensatis in operation.

While I have illustrated my invention in connection with a two printing unit four color printing press it is evident that I do not Wish to limit myself to such a press but contemplate the use of my invent on in connection with various types of presses Where the equipment is applicable.

What I claim is 2- i 1. Web printing and longitudinal folding mechanisms and an electric motor drive therefor, including a source of current supply, a master motor for the printing mechanism and an auxiliary motor for the folding mechanism, and means for maintaining the auxiliary motor at a predetermined "speed relative to the master motor.

2. Web printing and longitudinal folding mechanisms and an electric motor. drive therefor, including a source of current supply, a master motor for the printing mechanism and an auxiliary motor for the fold ing mechanism, and means including an automatically controlled rheostat for maintaining the auxiliary motor at a predetermined speed relative to the master motor.

3. Web printing, longitudinal folding and transverse cutting mechanisms and an electric motor drive therefor, including a source of current supply, a master motor for the printing mechanism and auxiliary motors for the folding and cutting mechanisms, and means for maintaining the auxiliary motors at predetermined speeds relative to the master motor.

4. Web printing, longitudinal folding and transverse cutting mechanisms and an elec trio motor drive therefor,including a source of current supply, a master motor for the printing mechanism and auxiliary motors for the folding and cutting mechanisms, and means including automatically controlled rheostats for maintaining the auxiliary motors at predetermined speeds relative to the master motor.

5. Web printing, longitudinal folding, feeding and transverse cutting mechanisms and an electric motor drive therefor including a source of current supply, a master motor for the printing mechanism and auxiliary motors for the folding, feeding and cutting mechanisms, and means for maintaining the auxiliary motors at predetermined speeds relative to the master motor.

6. Web printing, longitudinal folding, feeding and transverse cutting mechanisms and an electric motor drive therefor includ ing a source of current supply, a master motor for the printing mechanism and auxiliary motors for the folding, feeding and cutting mechanisms, and means including automatically controlled rheostats for maintaining the auxiliary motors at predetermined speeds relative to the master motor.

ed for by adjusting screw 57 While the press '7. Web printing, longitudinal folding, feeding and transverse cutting mecha and an electric motor drive therefor including a source of current supply, a master motor for the printing mechanism and auxiliary motors for the folding, feeding and cutting mechanisms, means for maintaining the auxiliary motors at predetermined s eeds relative to the master motor, and we tension means for varying the speed of the auxiliar motor for the Web feeding mechanism.

8. Weh printing, longitudinal folding, feeding and transverse cutting mechanisms and an electric motor drive therefor, includ-.' ing a source of current supply, a master motor for the printing mechanism and auxiliary motors for the folding, feeding and cutting mechanisms, means including automatically controlled rheost-ats for maintaining the auxiliary motors at predetermined speeds relative to the master motor, and web tension means for; varying the speed of the auxiliary motor for the web feeding mechanism.

In testimony, that I claim the foregoing as my invention, 1 have signed my name this 26th day of June 1929.

CALVERT B. COTTRELL, 3m).