US2311626A - Timing device for roll changing apparatus or the like - Google Patents

Description

Feb. 23, 1943. A. J. CLINE 2,311,626

TIMING DEVICE FOR ROLL CHANGING APPARATUS OR THE LIKE Filed July 10, 1941 4 Sheets-Sheet l Feb. 23, 1943. A, J, CUNE 2,311,626

TIMING DEVICE FOR ROLL CHANGING APPARATUS OR THE LIKE Filed July 10, 1941 4 Sheets-Sheet 2 Feb. 23, 1943. A. J. GLINE 2,311,626

TIMING DEVICE- FOR ROLL CHANGING APPARATUS OR THE LIKE Filed July 10, 1941 4 Sheets-Sheet 3 Feb. 23, 1943. A. J. CLINE 2,311,626

TIMING DEVICE FOR ROLL CHANGING APPARATUS OR THE LIKE File-d July 10, 1941 4 Sheets-Sheet 4 Lj A QM/Z l b iv :31 EJM M Patented Feb. 23, 1943 UNITED STATES PATENT OFFICE TIMING DEVICE FOR ROLL CHANGING APPARATUS OR THE LIKE 6 Claims.

This invention relates to a timing device whereby the operation of a controlled mechanism may be definitely related to the rotation or other movement of a controlling element, a particular adaptation of the invention being in connection with roll changing apparatus for printing presses. For this purpose the device may be used to time one or more of the operations involved in making a paster between the web of a replacement roll and the web of an expiring roll so that the operation Will be performed when the replacement roll is in a predetermined angular position in relation to its axis of rotation.

An object of the invention is to provide a magnetic control device, including a magnetic element movable with a certain part of the mechanism, such as the spindle of a web roll support, so as to cause a circuit to be closed or opened at a predetermined point in the rotation of said partassuming proper conditions to have been already set upto thereby cause actuation of the controlled mechanism, such as an element of a paster device of a roll changing apparatus, in properly timed relationship to the movement of said part of the controlling mechanism.

In the embodiment of the invention hereinafter illustrated the magnetic controlling device is employed to operate a valve to cause the spraying of a solvent on a dry adhesive substance on the replacement roll in a roll changing apparatus so that said adhesive is dissolved sufficiently to cause it to adhere to the web from the expiring roll upon contact therewith at a predetermined point in the rotation of the replacement roll, the valve being thereby operated in timed relationship to the rotation of'the replacement roll.

Other objects and advantages of the invention will become apparent from the following detailed description in connection with the accompanying drawings, and it will be understood that the preferred embodiment shown is illustrative only, inasmuch as the invention is not limited to use in the particular type of apparatus shown.

In the drawings:

Fig. 1 is an end elevational view of a web roll changing device in which my invention is embodied;

Fig. 2 is an elevational and sectional view of one of the spindle housings and a magnetic pickup device constructed in accordance with the principles of the invention;

Fig. 3 is a detailed sectional view taken substantially on the section line 3-3 in Fi 2;

Fig. 4 is a sectional view taken substantially on the line '4-4 in Fig. 2;

Fig. 5 is a diagrammatic lever diagram showing certain elements of the magnetic pick-up device and of the switch controlled thereby; and

Fig. 6 is a simplified wiring diagram showing the circuit whereby the spray valve is controlled.

Upon said drawings the reference numeral II indicates a three-arm paper reel mounted for rotation in a press substructure I 2. The arms I3 of the reel, which it will be understood are arranged in pairs, one at each end of the roll to be supported thereby, each have a spindle housing Id at the end thereof in which the spindle I5 is rotatably mounted.

The three paper rolls are indicated by the reference numerals 16, IT. and I8, the roll I6 being one which is nearly exhausted, from which the web I9 is running to the press, and the rolls l1 and [8 being the first and second replacement rolls, respectively.

In accordance with the present invention the spindle housing M on one of the arms I3 of each pair of such arm-s are formed to receive a rotor 2! (see Fig. 4) fixed to the spindle l5 and carrying a permanent magnet 22 which rotates in unison with the web roll which is supported on said spindle. The housing 14 is cut away tangentially at its outer end and the opening thus provided is covered by a non-magnetic plate 23 in which there are positioned two auxiliary magnetic pole pieces 24, which are located on the radius of the spider composed of the arms l3. Between the poles of the magnet 22 and the magnet pole pieces 24 there is a small air gap 25 so that these auxiliary pole pieces will serve to concentrate the magnetic lines of force when the magnet 22 is approximately in line with them, in order to thereby increase the attraction of the magnet on the co-acting elements of the magnetic pick-up device, which is generally indicated by reference numeral 26, said device being supported by a bracket 21 secured to the underside of the press frame 23 and being so located that the spindle housings l4 may be positioned immediately beneath it by rotation of the reel.

The elements of said magnetic pick-up device 26 are positioned in a housing which includes a bottom plate 29 of copper or like conductive material. Immediately above this plate are two armatures in the form of plates 3| and 32 which are centrally pivoted at points 33 and 34, respectively, to a supporting frame 35, which is suspended by a spring 36 from a cross bar 31 extending between posts 38 and 39 in fixed frame members 41. The lever 42 is linked between a pivot 43 in one of the fixed frames 4| and a pivot 44 in the floating supporting frame 35, and an operating plunger 45 'of a switch generally indicated by the reference numeral 46 is normally in contact with the upper side of said lever 42. The upper end of said plunger engages or is secured to a spring member 46' carrying one of the contacts 41' of the switch, and the strength of the spring 36 is such that said plunger is caused to normally hold said contact 41 out of engagement with the other contact 48 of the switch against the tension of the spring 45'.

When the reel is positioned so that one of the spindle housings I4 is beneath the magnetic pick-up device 25 and the roll carried by the spindle which is journalled in said housing rotates to the point Where the magnet 22 is beneath the magnetic pick-up 25, the armatures 3| and 32 will be attracted toward the magnet, thereby moving the supporting frame 35 downwardly against the tension of the spring 36 carrying with it the outer end of the lever 42, thus permitting the plunger 45 to be moved downwardly by action of the spring 415 and thereby closing the contacts 41, 48 of the switch. Assuming that a Pastor button has been pressed by the operator, as will hereinafter appear, this will cause operation of a spray valve generally indicated in Fig. 1 by the reference numeral 49, causing a solvent to be sprayed onto an adhesive such as dry glue indicated by the reference numeral 5!, on the roll, the spray being indicated by the numeral 52. The roll I! at this time has been brought up to desired speed by the means of a roll starting device (not shown) and by action of the web l9 thereon, the direction and rotation of the roll, as shown in Fig. 1, being counterclockwise. When the moistened adhesive 5| comes in contact with the web I9, a paster is made between the leading edge of the web of the new roll and the web l9 from the expiring roll, and in a predetermined time thereafter the latter web is cut off by means of a cutter 53 diagrammatically illustrated in Fig, 1 The spray valve 49 is so positioned that the area of the roll surface on which the adhesive is located moves the greater part of one revolution of the roll before coming into contact with the web l9, thereby allowing sufficient time for the solvent to act upon the adhesive to render it sufiiciently tacky to cause adherence of the web of the new roll to the expiring web when the adhesive contacts the latter. The timing is such as to cause the spray valve to act at a predetermined time in the rotation of the roll so as to throw the spray onto the adhesive when the latter arrives at the point indicated in Fig. 1.

Thearmature plates 3| and 32 are arranged to engage fixed stops on the frame at both ends of said plates, so that they may fulcrum at either end, and the two plates are provided so as to insure the proper action, even though the reel may be stopped in position so that the magnet 22 is not exactly centered.

As it will later appear, the momentary closing of the switch contacts 41, 48 closes the circuit which energizes a relay, which in turn closes contacts to cause operation of the valve 49 which is of the solenoid type. Upon release of the paster button the circuit is broken, and thereafter the reel is further rotated to position the roll in a running position which is the position of the nearly exhausted roll I5 shown in Fig. 1.

Referring to the wiring diagram of Fig. 6, the

armatures 31, 32 and the switch 46 of the magnetic pick-up device are shown schematically adjacent the spindle housing !4 of one of the reel arms I3. The positive and negative sides of the supply line are shown at 54 and 55, respectively, and the line switch is indicated at 56. The paster button above mentioned is identified by the reference numeral 51. When the line switch 55 is closed and the paster button 5'! is pressed by the operator, after the reel has been rotated into position with one of the spindle housings l4 beneath the pick-up device, the magnet 22, upon coming beneath the armatures 3|, 32 upon the next rotation of the roll, will cause the switch 46 to close, thereby completing a circuit through leads 58 and 59 to a relay BI and thence to the negative side 55 of the line. The energizing of the relay coil 6! closes a contact 62 establishing a holding circuit for the relay, and said relay simultaneously closes a contact 53 which allows current to flow from the positive line to a coil 64 of a solenoid type air valve 65, thus lifting a valve member 66 of said Valve and permitting air to flow from an inlet 61 to an outlet 68 leading to the head of the spray valve 49. This causes a spray 52 of solvent fluid to be thrown onto the adhesive 5| on the roll I! in timed relationship to the rotation of the roll, which results in the making of a paster as hereinbefore described.

The foregoing description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom.

I claim:

1. In web roll changing apparatus, a roll support including a spindle rotatable with a web roll, a magnet carried by the spindle, an armature mounted adjacent the roll support in position to be attracted by said magnet in a predetermined position of the roll support and at a certain point in the rotation of the roll, a paster device for connecting the web of said roll to the Web of another roll, including an element to be operated at said point in the rotation of said first-mentioned roll when said support is in said predetermined position, and electrical means for operating said element of said paster device, including a switch arranged to be operated by said armature when the latter is attracted by said magnet at said point in the rotation of said first-mentioned roll.

2. In web roll changing apparatus, a roll support including a spindle rotatable with a web roll, a magnet carried by the spindle, an armature mounted adjacent the roll support in position to be attracted by said magnet in a predetermined position of the roll support and at a certain point in the rotation of the roll, a paster device for connecting the web of said roll to the web of another roll, including a spray valve for projecting a liquid onto said first-mentioned roll in a predetermined zone to render the sprayed area of said roll sticky, and electrical means for causing operation of said spray valve, including a switch arranged to be operated by said armature when the latter is attracted by said magnet at said point in the rotation of said roll.

3. A roll changing apparatus for printing presses, comprising a roll support for a plurality of web rolls, a paster device for joining the web of a replacement roll to the web of an exhaust- .ing roll, said device including a spray valve for projecting a fluid onto the replacement roll in a predetermined zone thereof preparatory to making the paster, a magnetic element arranged to rotate with the replacement roll, a second magnetic element positioned to coact with said firstmentioned element when the roll support is in a predetermined position, electrical means for operating said spray valve, and a switch operated by one of said magnetic elements when they are brought into cooperative relationship for controlling said electrical means to cause operation of said valve.

4. In apparatus including a movable member and a device to be operated in timed relationship to the movement of said member: a magnetic element carried by said member, a coacting magnetic element mounted adjacent the path of movement of said member and in the path of the magnetic lines of force of said first mentioned magnetic element, and electrical means for controlling the operation of said device including a circuit controller operable by said magnetic elements when the latter are brought into operative relationship by the movement of said member, said controller including an armature comprising one of said magnetic elements, a supporting frame for the armature, spring means yieldingly supporting said frame, a switch including a spring element tending to close the contacts of said switch, and means normally resisting such tendency of said spring element, said means being connected to said armature and movement of said armature under the influence of said first-mentioned magnetic element causing suflicient movement of said means to permit the closing of the switch.

5. In web roll changing apparatus, a roll support including a spindle rotatable with a web roll, a housing for said spindle, a magnet including a rotatable element carried by the spindle and a stationary pole piece mounted on the spindle housing, an armature mounted adjacent the roll support in position to be attracted by said magnet in a predetermined position of the roll support and at a certain point in the rotation of the roll, a paster device for connecting the web of said roll to the Web of another roll, including an element to be operated at said point in the rotation of said first-mentioned roll when said support is in said predetermined position, and electrical means for operating said element of said paster device, including a switch arranged to be operated by said armature when the latter is attracted by said magnet at said point in the rotation of said first-mentioned roll.

6. In apparatus including a movable member and a device to be operated in timed relationship to the movement of said member: a magnetic element carried by said member, a coacting magnetic element mounted adjacent the path of movement of said member and in the path of the magnetic lines of force of said first-mentioned magnetic element, and electrical means for controlling the operation of said device including a circuit controller operable by said magnetic elements when the latter are brought into operative relationship by the movement of said member, said controller including a pair of pivoted armatures comprising one of said magnetic elements, a supporting frame for the armatures, spring means yieldingly supporting said frame, a switch includin a spring element tending to close the contacts of said switch, and means normally resisting such tendency of said spring element, said means being connected to said pair of armatures, and movement of either of said armatures under the influence of said first-mentioned magnetic element causing suflicient movement of said means to permit the closing of the switch, said armatures being spaced in the direction of movement of said movable member whereby said switch will be operated even though said movable member should not be exactly located with respect to said stationary switch-operating mechanism.

ALLAN J. CLIN'E.

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