US2703050A

US2703050A - Vibrator mechanism

Info

Publication number: US2703050A
Application number: US195883A
Authority: US
Inventors: Harry W Faeber
Original assignee: Time Inc
Current assignee: TI Gotham Inc
Priority date: 1950-11-15
Filing date: 1950-11-15
Publication date: 1955-03-01
Anticipated expiration: 1972-03-01

Description

March 1, 1955 H. w. FAEBER VIBRATOR MECHANISM 3 Sheets-Sheet 1 Filed NOV. 15, 1950 INVENTOR. HA /6P) fl 54:50?

' ATTORNEYS March 1, 1955 H. w. FAEBER VIBRATOR MECHANISM I5 Sheets-Sheet 3 Filed NOV. 15. 1950 IN VEN TOR. fl/mey M/ 64555? BY WJZWEQ M Arm/Wm;

United States Patent VIBRATOR MECHANISM Harry W. Faeber, Larchmont, N. Y., assignor to Time, Incorporated, New York, N. Y., a corporation of New York Application November 15, 1950, Serial No. 195,883

Claims. (Cl. 101-348) The present invention relates to a vibrator mechanism for imparting an axial reciprocating movement to one or more cylinders mounted for rotation in the frame of a machine for distributing one or more films of coating material such as ink or the like.

The mechanism of the present invention includes a vibrator bar mounted in a frame member for endwise reciprocating movement longitudinally relative to the frame member and transversely relative to the axes of the distributing cylinders mounted for rotation in the frame. Means are provided for reciprocating the vibrator bar, and the cndwise reciprocating movement thereof is transmitted by suitable cam means linking the vibrator bar and at least one of the distributing cylinders, to impart an axial reciprocating movement to the cylinder or cylinders.

It is preferred to substantially completely conceal the operating mechanism within the longitudinal frame member. This feature makes the mechanism adaptable for a fully enclosed ink carriage in a printing machine because there are no protruding parts that require covering. The mechanism is adaptable for use with any number of cylinders and is readily capable of imparting reciprocating movements in opposite directions and, if desired, of different amplitudes, to adjacent cylinders.

In one preferred embodiment of the invention a reciprocating cylinder is journaled for rotation only in a slidable support which in turn is mounted for reciprocation only in a frame member. The slidable support is provided with a diagonal groove engaged by a cam roller carried on the vibrator bar.

In another preferred embodiment a reciprocatnig cylinder is mounted for rotation and axial reciprocation in a frame member. An axial reciprocating motion is imparted to the cylinder by means of a cam plate provided with a diagonal groove that is in engagement with a cam roller carried on the vibrator bar.

The diagonal grooves in the slidable supports or cam plates for successive cylinders may be, and preferably are, so positioned as to impart progressively smaller amplitudes of axial reciprocation to the successive cylinders.

The advantages and utility of the mechanism of this invention will become more apparent from the following description made with reference to the accompanying drawing, wherein:

Figure 1 is a cross sectional view in elevation through one preferred embodiment of the invention;

Figure 2 is a cross sectional view in elevation taken along section line 2-2 of Figure 1;

Figure 3 is a cross sectional plan view taken along section line 3-3 of Figure l; and

Figure 4 is a schematic plan view illustrating, by way of example, a structure for imparting progressively decreasing amplitudes of axial vibration to successive cylinders in a series;

Figure 5 is a schematic view in elevation taken along section line 55 of Figure 4;

Figure 6 is a cross-sectional view in elevation through another preferred embodiment of the invention;

Figure 7 is a cross-sectional view in elevation taken along section line 77 of Figure 6;

Figure 8 is a cross-sectional plan view taken along section line 8-8 of Figure 6;

Figures 9 and 10 are views similar to Figure 7 showing alternate means for imparting vibrating motion to a cylinder; and

opposite directions.

ice

Figure 11 is a cross-sectional view taken along section line 11-11 of Figure 10.

It is to be understood that the mechanism of the invention will be described only with reference to one side of a typical machine wherein it is desired to impart reciprocating movements in opposite directons to adjacent cylinders in a series of cylinders for the purpose of effecting a uniform distribution of ink over the last of such a series of cylinders. The other side of the machine may simplyhave journals capable of supporting the rollers for both rotation and axial movement.

Referring now to Figures 1 to 3, a longitudinal frame member 10 is provided with an elongated groove 11 in its upper surface for receiving a vibrator bar 12. The vibrator bar 12 is connected to an eccentric 14 by means of an eccentric follower 16, a connecting rod 17, a bell crank 19 and a pin 20, a slot 21 being provided in the frame member 10 to permit lateral movement of the pin 20.

A cap 22 is provided to cover the top of the frame member 10 and conceal the vibrator bar 12. The cap is provided with cutout portions 24 for receiving slidable support members 26 each of which, as shown best in Figure 2, supports a bearing 27 for rotatably supporting a cylinder 29 with its axis above the level of the vibrator bar 12. The under surface of the bar member 26 adjacent the upper surface of the vibrator bar 12 is provided with a diagonal groove 30 as shown best in Figure 3. This groove receives, and the sides thereof engage, with a cam roller 31 mounted on a pin 32 secured in the vibrator bar 12 by a nut 34. Gear means 35, not forming part of this invention, are provided to adjust the position of the cylinder 29.

Another cylinder 36 is mounted for rotation with its axis below the level of the vibrator bar 12. The shaft 37 of the cylinder 36 is supported for rotation in a slidable sleeve member 39. The sleeve member 39 is mounted for endwise reciprocation in, the frame member 10 and is secured against rotation by a key 40. The upper portion of the sleeve member 39 is provided with a diagonal groove 41, as shown best in Figure 3, for the reception of, and engagement with, a cam roller 31a protruding from the under surface of the vibrator bar 12 and mounted on a pin 32 secured by nut 34.

As shown in Figure 3, the angle of the groove 41 relative to the vibrator bar 12 and the longitudinal frame member 10 is equal and opposite to that of groove 30. A collar 42 fixed to the shaft 37 of the cylinder 36 by a set screw 44 or the like is provided, if desired, at each end of the sleeve 39 so that any reciprocating movement imparted to the sleeve member will be transmitted to the cylinder.

In Operation, the

cylinders

29 and 36 are rotated and the shaft of the eccentric 14 is rotated by any suitable means not forming part of this invention. The rotation of the eccentric 14 imparts a rocking motion to the bell crank 19 which, by virtue of its pin connection 20, imparts an endwise reciprocating movement to the vibrator bar 12 lying in the groove 11 of the longitudinal frame member 10. The

cam rollers

31 and 31a, moving with the vibrator bar 12, bear against the sides of the grooves 30 and 41, respectively, and thus impart to the slidable supports 26 and 39 reciprocating movements in directions transverse to the longitudinal frame member 10 and the vibrator bar 12 lying therein. When the angularity of diagonal grooves in adjacent cylinder supports is opposite, as shown particularly in Figure 3, adjacent cylinders will be caused to reciprocate axially and in The cap 22 for the frame member 10 not only conceals the vibrator bar and the cam means linking the vibrator bar to the slidable supports but also provides suitable guide means for guiding the slidable support members 26. If it is desired to adjust the length of the strokes of the

cylinders

29 and 36, such adjustment may be effected by changing the eccentricity of the eccentric 14.

The embodiment illustrated schematically and by way of example in Figures 4 and 5 consists essentially of .a means for imparting progressively smaller amplitudes of axial vibration to a series of distributor cylinders 36a,

29a, 36b, 29b and 360.

The vibrating mechanism, which includes an eccentric 14a, a connecting rod 17a, a bell crank 19a, a vibrator. bar 12 carrying cam rollers 31,

and a slidable support for each of the distributor cylinders, is essentially similar to the construction described with reference to Figures 1 to 3.

As best shown in Figure 4, however, the angularity of the grooves in the slidable cylinder supports to the direction of movement of the vibrator bar 12 diminishes in each successive support. Thus, the groove 41a in the sleeve member 39a'supporting the distributor cylinder 36a is at a greater angle to the line of motion of the vibrator bar 12 than the groove 30a in the bar member 26a for supporting the next cylinder 29a in the series of cylinders. The angularity of grooves 41b, 30b and 410 with the direction of motion of the vibrator bar 12 likelength of stroke of each cam roller 31 within the various grooves is the same, the amplitude of the axial vibration imparted to the various supports, and therefore to the cylinders they support, is greatest at the maximum angularity of the groove with the line of motion of the vibrator bar 12 and least where this angularity is at a minimum.

The advantage of this arrangement will become apparent particularly when it is applied to a multi-color ink printing system. Thus, as shown in Figure 4, a fountain 46 may be divided by a partition 47 into a compartment 49 for blue ink and a compartment 50 for red ink and a single fountain roll 51 and ductor roll 52 can be used with miximum efficiency. The amplitudes of the various distributor cylinders are shown schematically by lines in phantom, the amplitude of vibration of the first distributor cylinder 36a being designated A1 and the amplitude of vibration of the last distributor cylinder 36c being designated A2. The relatively large strokes of the first two

distributor cylinders

36a and 29a in opposite directions promote good crosswise distribution and cutting up of the inks while they are still in the heavy and tacky state. As the inks are fed forward over the series of cylinders, the inks become more uniformly distributed and the films become thinner. A minimum of vibration is therefore necessary in the last distributor cylinder 360 from whence the inks are transferred to form rolls 54. A minimum of axial vibration in the last distributor cylinder is highly desirable because it permits very close printing of separated colors, as illustrated by the

series ofdotted lines

56 and 57, and reduces the danger of interbleeding.

Figures 6 to 11 illustrate by way of example an embodiment wherein the reciprocating cylinders are mounted for both rotation and reciprocation in a frame member. A longitudinal frame member 60 is provided with an elongated groove 61 in its upper surface for receiving a vibrator bar 62. The vibrator bar 62 is provided with a gear rack 64 which is in mesh with a pinion 66 rocked about its axis by means of a crank 67 connected by link 69 to an adjustable eccentric 70.

A cap 71 is provided to cover the top of the frame member 60 and to conceal the vibrator bar 62. The cap is provided with cut-out portions 72 for receiving slidable cam plates 74 and with vertical guideways 76 for supporting an upper course of cylinders 77. The shafts 79 of the cylinders 77 are journaled in bearings 80 slidable vertically in the guideways 76 and supported by compression springs 81. Each vertical guideway 76 is capped by a hold down member 82 pivoted at 83, maintained in operative position by a wing nut 84 and supporting a stud 85 carrying an adjusting nut 86 engaged by an eccentric bifurcated lock 87 to urge the bearing member 80 downwardly against the compression spring 81. The lower course of reciprocating cylinders 88 is journaled directly in the frame member 60 for both rotation and axial reciprocation.

As shown in Figure 7 the shaft of each reciprocating cylinder is provided with a pair of collars 89 in engagement with a roller 90 mounted on the inner end of a slidable cam plate 74. As shown more particularly in Figure 8, each cam plate 74 is provided at the outer end with a diagonal groove 91 that is in engagement with a cam roller 92 on the .vibrator bar 62. It is to be understood, of course, that the diagonal grooves 91 of successive cam plates 74 may have a gradually diminishing angle to the longitudinal axis of the vibrator bar 62, as described with refgrgnce to the embodiment illustrated in Figures 4 an Figures 9, l0 and 11 illustrate alternative means of relaying the vibrating motion of the cam plates 74 to the

reciprocating cylinders

77 and 88. In Figure 9 the shaft of a cylinder, as shown, is provided with a disc 94 and the inner end of the cam plate 74 is provided with two rollers 90, one on each side of the disc. In Figures 10 and 11 the shaft of each cylinder is provided with a pair of collars 89 in substantially the same manner as illustrated in Figure 7 and a yoke 96, provided with two gallers 90, is mounted on the inner end of the cam plate In operation the length of the stroke of the vibrator bar 62 is determined by adjustment of the adjustable eccentric 70. The reciprocating motion of the vibrator bar 62 transmits appropriate reciprocation, in a direction transverse to that of the vibrator bar, to the various cam plates 74 by virtue of engagement of the cam rollers 92 in the diagonal grooves 91. The roller or rollers mounted on the inner end of each cam plate 74 bear against the collars 89 or the disc 94 to transmit or relay the motion of the cam plate 74 to the

cylinder

77 or 88.

The vertical positions of the cylinder 77 are adjusted by adjustment of the nuts 86 on the stud 85. Movement of the handles of the eccentric locks 87 in a counter-clockwise direction, as seen in Figure 6, will operate to quickly relieve the contact between the upper and lower courses of cylinders. Disengagement of wing nuts 84 and pivoting of hold down members 82 about pivots 83 permits easy removal and replacement of the upper course of cylinders.

It is to be understood that many changes and modifications will immediately occur to those skilled in the art upon reading this description. All such changes and modifications are intended to be included within the scope of this invention as defined in the accompanying claims.

I claim:

1. In a machine for distributing a film of coating material over a series of rotating cylinders and transferring said film from the first to the last cylinder in the series, said machine including a horizontal side frame member; a series of rotatable cylinders having mutually parallel axes of rotation at right angles to the side frame member, the axes of rotation of successive cylinders in the series lying alternately in planes vertically offset from one another; and journals supported by the side frame member for supporting the cylinders for rotation and for movement transversely of the side frame member; 21 vibrator mechanism for imparting opposite axial reciprocating movements to adjacent cylinders in said series of cylinders, which comprises an elongated, horizontal vibrator bar concealed in the side frame member and mounted therein for endwise reciprocation, means for reciprocating the vibrator bar, and cam means operatively connecting the vibrator bar and the cylinders for translating endwise reciprocation of the vibrator bar into opposite axial reciprocation of adjacent cylinders in said series of cylinders.

2. The mechanism defined in claim I wherein the vibrator bar carries cam rollers and the cam means are slidable transversely of the side frame member and are each provided with a diagonal groove in engagement with a cam roller.

3. The mechanism defined in claim 1 wherein the journals are mounted on the frame for reciprocation in a direction transverse to the endwise reciprocating movement of the vibrator bar and the cam means operatively connect the vibrator bar and the journals.

4. The mechanism defined in claim 1 wherein the journals are fixed to the frame for supporting the cylinders for rotation and axial reciprocation therein.

5. In a machine for distributing a film of coating material over a series of rotating cylinders that includes a horizontal side frame member; a series of rotatable cylinders having mutually parallel axes of rotation at right angles to the side frame member. the axes of rotation of the cylinders in the series lying alternately in planes vertically offset from one another; and journals supported by the side frame member for supporting the cylinders for rotation and for movement transversely of the side frame members; a vibrator mechanism for imparting opposite axial reciprocating movements to adjacent cylinders in said series of cylinders, which comprises an elongated, horizontal vibrator bar concealed in the side frame member, mounted therein for endwise reciprocation and carrying cam rollers, means for reciprocating the vibrator bar, and cam means operatively connecting the vibrator bar and cylinders for translating endwise reciprocation of the vibrator bar into opposite axial reciprocation of adjacent cylinders in said series of cylinders, the cam means being slidable transversely of the side frame member and each cam means being provided with a diagonal groove in engagement with a cam roller, the angles of the diagonal grooves of the cam means for successive cylinders in the series of cylinders to the axis of reciprocation of the vibrator bar diminishing progressively.

References Cited in the file of this patent UNITED STATES PATENTS