JPH0642178U - Shaking roller drive device for inking device of printing machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve print quality with a simple structure and low cost. [Structure] 1 is a swing roller, which is rotated together with a plate cylinder that is rotated by rotational driving of a prime mover, and is a frame 3
Is supported by. Reference numeral 5 is a cylinder attached to the frame 3, and projections 5a are provided on the inner peripheral surface of the cylinder.
The internal gear 6 is fixed. Shaking roller 1 shaft 2
A sun gear 8 is press-fitted into the protruding portion of the frame 3 and a planetary gear 9 that meshes with the internal gear 6 is provided around the sun gear 8. Reference numeral 10 denotes a rotating body that is rotatable around the shaft 2 as an axis, and rotates around the sun gear 8 integrally with the planetary gear 9 via a pin 9a that is planted in the planetary gear 9. The protrusion 5a is formed on the outer peripheral surface of the rotating body 8.
Is formed with a circumferential cam groove 10a, and the rotating body 8 is
It is integrated with the shaft 2 for movement in the axial direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a swing roller driving device for an inking device, which is attached to an inking device of a printing machine and reciprocates a rotating swing roller in an axial direction.

[0002]

[Prior art]

 The inking unit of the printing machine supplies the ink in the ink fountain to the plate surface on the plate cylinder through a large number of rollers, and the rollers in the roller group reciprocate in the axial direction while rotating to make the ink uniform. A plurality of leveling rollers are provided. The swing rollers can be adjusted by reducing the swing amount when it is desired to change the ink kneading condition according to the type of printed matter, for example, when performing rainbow printing, which prints by blurring the boundary between two colors. It is carried out. An apparatus of this type is disclosed in Japanese Patent Publication No. 56-6864. The device disclosed herein is configured such that a sleeve is fitted to an inclined shaft portion that is formed to be inclined with respect to a rotary shaft, and a swing roller group is axially supported by a disk that is axially mounted on the sleeve. The sleeve has an outer peripheral surface that inclines with respect to the axis of the tilting shaft, is fixed to the tilting shaft by an adjusting bolt, and loosens the adjusting bolt to rotate around the tilting shaft, thereby rotating its circumference. The position in the direction can be arbitrarily selected, and the swing amount of the swing roller is adjusted by this.

However, the device disclosed herein has separate drive systems for rotation and lateral swing of the swing roller, which requires a large number of gears and cranks due to its structure, and is complicated and large. Turn into. Further, since the disc has a structure in which a plurality of swing rollers are supported, the phase of the swing rollers cannot be changed. In other words, the relative position or the direction of the swing between a particular swing roller and another swing roller cannot be changed at a certain moment among the swing rollers, so that the operator can see the printed matter during printing. However, there is a drawback that you can't adjust it.

Therefore, as a solution to this drawback, the one disclosed in Japanese Patent Laid-Open No. 64-45640 has been proposed. In the proposal here, a motor having a motor shaft parallel to the swing roller is supported on the frame side via a supporting member, and a groove cam is detachably fixed to the motor shaft. A swing lever with its central portion pivotally attached is provided on the support member, and a cam follower that engages with the cam groove of the groove cam is pivotally attached to one end of the swing lever, and the other end of the swing wheel on the swing roller end shaft is attached. The engaged roller is pivotally attached, and when the groove cam rotates with the rotation of the motor, the swing lever swings and the swing roller reciprocates. When the pattern or the like changes, the groove cams are replaced to freely select the phase of each swing roller.

[0005]

[Problems to be solved by the device]

 However, in the above-described conventional device, a motor is required for each of the swing rollers, which causes problems in space and cost. In addition, an expensive low-speed motor must be used according to the vibration speed, and if a normal motor is used, a separate reduction gear is required, which saves space and cost. Problems arise. Furthermore, the swing cycle must correspond to the printing speed, and a separate control device that controls the rotation of the motor to follow the printing speed is required, which causes the drawback that the control system becomes complicated. However, there will be problems in terms of cost.

Therefore, the present invention has been made in view of the above-mentioned problems or drawbacks of the related art, and an object of the present invention is to use a part of the rotational driving force of a roller to perform lateral swing. In addition, by eliminating the complicated swing drive system of the swing rollers, the structure is simple and inexpensive, and the swing amount of each swing roller can be adjusted individually to improve printing quality. It is to provide a swing roller driving device for a device.

[0007]

[Means for Solving the Problems]

 In order to achieve this object, a swing roller driving device for an inking device of a printing machine according to the present invention is rotatably driven by a prime mover and is axially supported by a frame so as to be movable in an axial direction. A swing roller, a planetary gear mechanism that has a sun gear that rotates integrally with the rotation support shaft of the swing roller, a rotating body that is rotated by this planetary gear mechanism, and a non-rotating body that is close to this rotating body and whose rotation is restricted. A rotating member is provided, and the rotating member and the non-rotating member are provided with a cam groove and a protrusion engaging with the cam groove. Is provided with a cam mechanism capable of moving back and forth along the axial direction of the rotary support shaft or the non-rotating member that reciprocates. Mounted as a unit .

[0008]

[Action]

 According to the present invention, the sun gear rotates with the rotation of the swing roller, and the cam mechanism provided between the rotating body that rotates by the planetary gear mechanism and the non-rotating member allows the rotating body or the non-rotating member to rotate. Reciprocate along the axial direction of the rotary support shaft, which causes the rotary support shaft to reciprocate along the axial direction.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a front sectional view of a swing roller driving device for an inking device of a printing machine according to the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. In these drawings, reference numeral 1 is a swing roller, and a shaft 2 serving as a rotation support shaft is rotatably supported by a bearing (not shown) of the frame 3 and is slidably supported in the axial direction. 3 is pivotally supported. A gear is fixed to the shaft of the swing roller 1 (not shown) of the swing roller 1 so that the drive of a known prime mover can be transmitted. On the outer surface of the frame 3, there is fixed a cylinder 5 which is a non-rotating member in which a projection 5a is projected on a part of the inner peripheral surface and a cylindrical internal gear 6 is fixed.

A sun gear 8 is press-fitted and fixed to a portion of the shaft 2 protruding from the frame 3, and the sun gear 8 is meshed with the sun gear 8 around the sun gear 8 and Three planetary gears 9 that mesh with 6 are provided. The tooth width of the internal gear 6 is formed sufficiently longer than the tooth widths of the sun gear 8 and the planetary gear 9. A pair of pins 9a is planted in the center of both side surfaces of the planetary gear 9, and the pin 9a is fitted into the inner side surface of the rotating body 10 which is rotatable around the shaft 2. To rotate around the shaft 2 as it rotates. A circumferential cam groove 10a is formed on the outer circumferential surface of the rotating body 10 so as to go around the outer circumferential surface once.

Reference numeral 11 denotes a bearing that is fixed to the rotating body 10 and rotatably supports the shaft 2. A step portion 2a is provided at an end portion of the shaft 2, the step portion 2a abuts on the bearing 11, and the slip-off preventing member 13 is press-fitted at the end portion, so that the rotating body 10 rotates with respect to the shaft 2. It is free and integrated with axial reciprocation.

The operation of this configuration will be described below. When a known prime mover that rotationally drives a plate cylinder (not shown) is operated, the drive of the prime mover is transmitted to a gear and a shaft (not shown), and the swing roller 1 rotates and the shaft 2 also rotates. The rotation of the shaft 2 causes the sun gear 8 to rotate, whereby the planetary gear 9 rotates around the sun gear 8 and the rotating body 10 rotates around the shaft 2. At this time, since the projection 5a of the cylinder 5 is engaged in the circumferential cam groove 10a of the rotary body 10, the circumferential cam groove 10a slides along the projection 5a, and the rotary body 10 is moved to the arrow A in the figure. , Reciprocate in the B direction. Therefore, the swing roller 1 also swings laterally in the A and B directions via the shaft 2 which is integrated with the rotating body 10 in the axial reciprocating motion. Here, the swing amount and swing phase of the swing roller 1 can be changed by exchanging the rotating body 10 in which the shape of the circumferential cam groove 10a is changed, so that the adjustment of each swing roller can be easily performed. It becomes possible to do. The sun gear 8 and the planetary gear 9 also reciprocate in the A and B directions integrally with the rotating body 10 via the shaft 2.

Here, the relationship between the number of swings of the swing roller 1 and the number of rotations of the plate cylinder is obtained. Assuming that the number of teeth of the sun gear 8 is Z _A and the number of teeth of the internal gear is Z _B , the reduction ratio of the rotating body 10 with respect to the sun gear 8 is represented by (Equation 1). When the diameter of the plate cylinder is R and the diameter of the swing roller 1 is r, the swing roller 1 rotates (R / r) for one rotation of the plate cylinder. Therefore, the sun gear 8 also rotates (R / r). Since this rotation is decelerated by (Equation 1), the rotation speed of the rotating body 10 is represented by (Equation 2). If the circumferential groove 10a is formed so that the rotating body 10 reciprocates once for one rotation of the rotating body 10, the swinging number n of the swinging roller 1 for one rotation of the plate cylinder is ( It is represented by Formula 3).

[0014]

[Equation 1]

3 and 4 show a second embodiment of the present invention. In the second embodiment, the inner peripheral surface of the cylinder 5 is provided with the concave fitting portion 5b that restricts the axial movement of the first rotor 20 and the sun gear 8 and the planetary gear 9. Further, the shaft 2 is loosely inserted into the sun gear 8, and a key 2b protruding on a part of the peripheral surface is fitted into a key groove 8a formed in the sun gear 8 so that the sun gear 8 and the rotation direction are rotated. It is integral with and is slidable in the axial direction. A pair of ridges 20b is formed on the peripheral surface of a cylindrical portion 20a formed on one side of the first rotating body 20 that rotates integrally with the planetary gear 9. Reference numeral 22 is a second rotating body formed in a cylindrical shape, and a circumferential cam groove 22a with which the projection 5a of the cylinder 5 engages is provided on the outer peripheral surface, and the protruding body 20b is loosely inserted on the inner peripheral surface. Recessed groove grooves 22b are formed respectively. Reference numeral 23 is a bearing, and 24 is a retaining member for sandwiching the second rotating body 22 with the step portion 2a of the shaft 2. The shaft 2 is rotatable with respect to the second rotating body 22. Moreover, they are integrated with respect to the axial reciprocating movement of the second rotating body 22.

Therefore, in the second embodiment having such a configuration, when the swing roller 1 rotates due to the rotation of the plate cylinder, the first rotation is performed via the sun gear 8 and the planetary gear 9. The body 20 rotates, and the second rotating body 22 also rotates. At this time, the protrusion 5a slides in the circumferential cam groove 22a, and the second rotating body 22 reciprocates in the directions of arrows A and B. The swing roller 1 also swings laterally in the directions of arrows A and B. The sun gear 8, the planetary gear 9, and the first rotating body 20 rotate, but their axial movement is restricted by the concave fitting portion 5b of the cylinder 5.

5 and 6 show a third embodiment of the present invention. In the third embodiment, a pair of arm portions 25a are formed on the end surface of one side portion of the first rotating body 25 that rotates integrally with the planetary gear 9, and one arm portion 25a of the second rotating body 27 is formed. A pair of through holes 27b, which are arcuate in side view, into which the arm portion 25a is fitted are provided on the end surface of the. The shaft 2 is press-fitted and fixed to the sun gear 8, and the sun gear 8 is formed to have a tooth width sufficiently longer than that of the planetary gear 9. Reference numeral 28 is a bearing that rotatably supports the shaft 2 with respect to the second rotating body 27, and 29 is a retaining member that is press-fitted into an end portion of the shaft 2 and holds the second rotating body 27 together with the step portion 2a. Is.

In such a configuration, when the swing roller 1 rotates with the rotation of the plate cylinder, the first rotating body 25 rotates via the sun gear 8 and the planetary gear 9, and the arm portion 25 a and The second rotating body 27 rotates by engaging with the through hole 27b. At this time, the protrusion 5a slides in the circumferential cam groove 27a, the second rotating body 27 moves back and forth in the directions of arrows A and B, and the swing roller 1 also swings laterally in the directions of arrows A and B. . The sun gear 8 also integrally reciprocates in the directions of arrows A and B, but the planetary gear 9 and the first rotating body 25 are restricted from moving in the axial direction.

FIG. 7 shows a fourth embodiment of the present invention. In the fourth embodiment, the planetary gear 9 is rotatably supported by a pin 30 that is planted in the frame 3, meshes with the planetary gear 9, and the inner gear 31 having a circumferential cam groove 31a on the outer peripheral surface is attached to the sun gear 8. It can rotate around. Further, both side edges 31b of the internal gear 31 are provided so as to sandwich both side surfaces of the planetary gear 9, and the axial movement of the internal gear 31 is restricted. Reference numeral 32 denotes a cylindrical cover having a bottom, and a projection 32a that engages with the circumferential cam groove 31a is provided on the inner peripheral surface and a projection 32b is provided on the outer peripheral surface. The shaft 32 is rotatably supported by a bearing 33 on the cover 32, and the shaft 2 is integrated with the axial reciprocating movement of the cover 32 by the retaining member 34 and the step portion 2a. Reference numerals 35a and 35b (35b not shown) are guide rods each having one end attached to the frame 3 so as to be parallel to each other at equal intervals. The projection 32b is fitted between the guide rods 35a and 35b. The rotation of the cover 32 is restricted by the guide rods 35a and 35b, and the cover 32 is guided slidably in the axial direction.

Therefore, in such a configuration, when the swing roller 1 rotates with the rotation of the plate cylinder, the internal gear 31 rotates via the sun gear 8 and the planetary gear 9, and the protrusion 32 a causes the circumferential cam groove to rotate. It slides in 31a. At this time, since the internal gear 31 is restricted from moving in the axial direction, the cover 32 is guided by the guide rods 35a and 35b to reciprocate in the directions of arrows A and B, and the swing roller 1 passes through the shaft 2. Also shake in the directions of arrows A and B. At this time, the sun gear 8 also moves in the directions of arrows A and B.

In the present embodiment, an example in which three planetary gears 9 are used has been shown, but it goes without saying that an appropriate number can be selected as necessary. It goes without saying that the members provided with the circumferential cam groove and the projection engaging with the circumferential cam groove may be replaced with each other.

[0022]

[Effect of device]

 As described above, according to the present invention, the swing roller pivotally supported by the frame so as to be movable in the axial direction by the rotational drive from the prime mover, and the rotation support shaft of the swing roller are integrally rotated. A planetary gear mechanism having a sun gear that rotates, a rotating body that is rotated by the planetary gear mechanism, and a non-rotating member that is in proximity to the rotating body and whose rotation is restricted. Is provided with a cam mechanism that includes a cam groove and a protrusion that engages with the cam groove, and that reciprocates a rotating body or a non-rotating member along the axial direction of the rotating support shaft as the rotating body rotates. The end portion of the rotary support shaft is rotatably attached to the reciprocating rotating body or the non-rotating member so as to be integrated with the reciprocating movement in the axial direction, and the rotating body rotates as the swing roller rotates. Mosquito Since the rotation support shaft of the swing roller is reciprocally moved in the axial direction by the mechanism so that the swing roller can be horizontally swung, a drive means or levers or brackets for horizontal swing is required as in the conventional case. This not only simplifies the structure, but also makes it possible to reduce the size and weight and achieve cost reduction. Further, since the swing rollers are individually attached to the ends of the swing rollers, the position of the swing rollers is not restricted by the lateral swing device, which increases the degree of freedom in design. In addition, since the phase and amplitude of the horizontal swing can be freely determined for each roller, an ink flow that matches the design and printing conditions of the printed matter can be obtained, so the top and bottom of the printed matter, uneven density on the left and right, ghosts, roller eyes, etc. Print problems are eliminated and the quality of printed matter is improved.

[Brief description of drawings]

FIG. 1 is a front sectional view of a swing roller driving device for an inking device of a printing machine according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a front sectional view of a second embodiment of a swing roller driving device for an inking device of a printing machine according to the present invention.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a front sectional view of a third embodiment of a swing roller driving device for an inking device of a printing machine according to the present invention.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a front sectional view of a fourth embodiment of a swing roller driving device for an inking device of a printing machine according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Swing roller 2 Shaft 3 Frame 5 Cylindrical 5a Protrusion 6 Internal gear 8 Sun gear 9 Planetary gear 10 Rotating body 10a Circumferential cam groove 20 First rotating body 20b Protrusion body 22 Second rotating body 22a Circular cam groove 22b Recessed fitting groove 25 First rotating body 25a Arm portion 27 Second rotating body 27a Circular cam groove 27b Through hole 31 Internal gear 31a Circular cam groove 32 Cover 32a Projection

Claims (1)

[Scope of utility model registration request] 1. A planet having a swing roller pivotally supported by a frame so as to be movable in an axial direction by being rotationally driven from a prime mover side, and a sun gear which rotates integrally with a rotation support shaft of the swing roller. A gear mechanism, a rotating body that is rotated by the planetary gear mechanism, and a non-rotating member that is close to the rotating body and whose rotation is restricted are provided. The cam groove and the cam groove are provided in the rotating body and the non-rotating member. And a cam mechanism for reciprocating the rotating body or the non-rotating member along the axial direction of the rotation supporting shaft along with the rotation of the rotating body. A swing roller driving device for an inking device of a printing press, wherein an end portion of the rotation supporting shaft is attached to a rotating member so as to be rotatable and integrated with respect to reciprocating movement in an axial direction.