JP2000046128A - Drive connecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent wrong connection. SOLUTION: Rotation of an auxiliary prime mover motor 6 is transmitted to a phase adjusting gear of a barrel through a gear 24 meshed with a gear 23 bearing mounted in a shaft 12. Each barrel is turned through the gear 24 meshed with a gear 66 bearing mounted in an operating shaft 65 when a handle 71 is turn operated by manual operation. The shaft 12 and the operating shaft 65 are provided coaxial, a pressing member 25 is provided in the gear 23, and a recessed part 67 engaging the pressing member 25 is provided in the gear 66. When the gear 23 is meshed with the gear 24 by moving the shaft 12 in a direction of arrow mark A, the gear 66 is moved in a direction of arrow mark A by the gear 23, to be placed in a condition incapable of being meshed with the gear 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive connection device for selectively connecting two drive systems to one rotation transmission system.

[0002]

2. Description of the Related Art In a sheet-fed rotary printing press with a reversing mechanism, for example, a drive system constituted by a gear group of a cylinder for rotating each cylinder is provided with a gear for meshing and disengaging. By meshing and rotating this gear by means of a motor, the phase of the cylinder is changed to switch from single-sided printing to double-sided printing. Further, this drive system is provided with another gear for meshing and disengaging, and when paper is jammed between cylinders during printing, this another gear meshes with the drive system to manually operate the handle. Thus, the body is rotated to remove the jammed paper.

[0003]

However, in the above-described conventional drive coupling device, since the two gears are structured so as to be able to mesh with the drive system at the same time, the cylinder is adapted to support one-sided printing to two-sided printing. If you accidentally operate the steering wheel during or immediately after positioning the phase,
If the printing press is driven with the cylinder phase shifted, the machine may be damaged due to the cylinder phase shift.

[0004] The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a drive connection device that prevents incorrect connection.

[0005]

To achieve this object, a drive coupling device according to the present invention comprises a first gear mounted on a first shaft movably supported, and a first gear movably mounted on the first shaft. A second gear mounted on a supported second shaft;
And a third gear meshed with a second gear, the first gear meshes with the third gear, so that the second gear becomes a third gear. Is disengaged. Therefore, the first gear and the second gear do not mesh with the third gear at the same time.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 is a cross-sectional side view showing a main part of a sheet-fed rotary printing press with a reversing mechanism to which a drive connecting device according to the present invention is applied, FIG. 2 is a view taken in the direction of arrow II in FIG. 1, and FIG. It is a side view which shows a cross section. In FIG. 1, reference numeral 1a denotes a driving-side frame.
a, a bracket 3 having a substantially U-shaped cross section is attached via a stud 2, and a support plate 5 is attached to the bracket 3 via a pair of stud members 4, 4. I have. An auxiliary driving motor 6 is fixed to the support plate 5, and the motor shaft 7 of the auxiliary driving motor 6
One end of a transmission shaft 9 rotatably supported by the bracket 3 is connected via a coupling 8. A gear 10 having a large tooth width is axially mounted on the other end of the rotating shaft 9, and a gear 11 meshes with the gear 10.
2, the shaft 12 is rotatably supported by the bracket 3 and is movably supported in the direction of arrows AB in the figure.

At one end of the shaft 12 protruding toward the frame 1a, a groove cam 14 having a groove formed by a pair of opposed disks 14a is fixedly mounted. In FIG. 2, reference numeral 15 denotes an air cylinder pivotally attached to the bracket 3, and a rod 16 is pivotally attached to one end of a lever 17. Reference numeral 18 denotes a pivot.
The lever 17 is rotatably supported by a shaft support member 19 fixed to the shaft, and the other end of the lever 17 is axially mounted on one end. One end of a lever 20 is pivotally attached to the other end of the pivot 18, and the lever 2
A cam follower 21 that engages with the groove of the groove cam 14 is supported at the other end of the groove 0. Therefore, the air cylinder 1
5 is activated and the rod 16 advances, the pivot 18
Since the cam follower 21 rotates in the clockwise direction and the cam follower 21 moves in the direction of arrow A, the shaft 12 moves in the direction of arrow A, and the gear 23 mounted on the other end of the shaft 12 protruding from the bracket 3 becomes the gear 24. It is configured to engage. A pressing member 25 having a diameter smaller than the diameter of the gear 23 is attached to the protruding end of the shaft 12.

Reference numeral 26 denotes a pulley. The rotation of a driving motor (not shown) is transmitted via a belt,
4 is fixed to the pulley 26, and the pulley 26
And is axially attached to one end of the drive shaft 27 through the shaft. The drive shaft 27 is rotatably supported by a frame 1a and a bracket 28 fixed to the frame 1a, and a gear 29 is mounted on the other end. In this gear 29,
A gear shaft-mounted on the end shaft of the impression cylinder of the first printing unit (not shown) meshes. Therefore, the rotation of the auxiliary driving motor 6 is transmitted to the impression cylinder via the gears 10, 11, 23, 24, and 29.

In FIG. 3, reference numeral 30 denotes a connecting shaft. The connecting shaft 30 is connected to an end shaft on the operation side frame 1b side of the impression cylinder which rotates by transmitting the rotation of the auxiliary driving motor 6. The rotation of the auxiliary driving motor 6 is transmitted through a worn gear, clutch means, bevel gears and the like (all not shown). The connecting shaft 30 is rotatably supported by a shaft supporting member 36 fixed to the outside of the frame 1b.
, And a bevel gear 32 is meshed with the bevel gear 31. The bevel gear 32 is pivotally mounted on one end of a shaft 33, and the shaft 33 is rotatably supported by a frame 1 b and a bracket 34.
An intermediate gear 35 is axially mounted on the protruding end portion protruding into the portion b.

On the inner surface of the frame 1b, an annular cam base 37 provided concentrically with the impression cylinder 36 of the second printing unit is fixed by bolts. This cam base 37
An annular single-sided printing cam 38 is journalled so that its outer peripheral cam surface is in contact with a cam follower 44 described later, and is fixed to the cam base 37 by bolts. On the outer peripheral surface of the cam base 37, an annular adjustment gear 39 meshing with the above-described intermediate gear 35 is supported. This adjustment gear 3
Reference numeral 9 denotes an annular double-sided printing cam 4 functioning as a moving cam.
Reference numeral 0 denotes an outer peripheral cam surface which is journalled so as to be in contact with the cam follower 44, and is fixed to the adjustment gear 39 by bolts.

A notch (not shown) having a triangular cross section is provided at a location where the outer peripheral portion of the impression cylinder 36 is equally divided in the circumferential direction thereof. A pawl shaft 42 movably supported is provided. Each claw shaft 42 is provided with a claw device in parallel.
A lever 43 is fixed to both ends of the claw shaft 42, and a wide cam follower 44 is pivotally attached to its free end by a pin. In such a configuration, when the connection shaft 30 is rotated, the bevel gears 31, 32, the shaft 33, and the intermediate gear 35 are rotated.
, The phase of the double-sided printing cam 40 integral with the adjustment gear 39 and the single-sided printing cam 38 fixed to the frame are adjusted, and switching between single-sided printing and double-sided printing is performed. .

An air cylinder 45 has one end of a lever 47 fixed to a rod 46 thereof.
One end of a lever 48 is pivotally connected to the other end of 7. A concave portion 49 is formed on the outer surface of the frame 1b.
A fixed base 50 is fixed to the bottom of the base 9. The other end of the above-described lever 48 is rotatably supported on the upper portion of the fixed base 50 via a pin 51, and a cam portion 48a protrudes from the other end of the lever 48. . A swing member 51 is swingably supported via pins 52 laid on both sides of the concave portion 49 so that one end is engaged with the cam portion 48a of the lever 48. , An adjusting screw 53 is screwed into and the tip protrudes.

Numeral 54 denotes a pressing member formed in a substantially columnar shape. The tip of the adjusting screw 53 is pressed by a disc spring 55, and the swinging member 51 is rotated counterclockwise in FIG. It is urged to rotate. An insertion hole 49a is formed in the bottom of the concave portion 49 of the frame 1b at a position corresponding to the adjustment gear 39, and a substantially columnar pressing member 54 is slidably slidable in the direction of the arrow AB in the insertion hole 49a. Supported. A pin 55 implanted on the side surface of the upper end of the pressing member 54 is engaged with the lower end of the other end of the swing member 51.

In such a configuration, when a double-sided printing changeover switch (not shown) is activated, the air cylinder 15 shown in FIG. 2 operates and the rod 16 moves forward.
, The cam follower 21 moves in the direction of arrow A. Since the shaft 12 moves in the direction of arrow A, the gear 23
Mesh with. At this time, since the tooth width of the gear 10 is formed to be large, the meshing state between the gear 10 and the gear 11 is maintained.

In FIG. 1, the auxiliary driving motor 6 starts rotating, and the rotation is performed by the motor shaft 7, the transmission shaft 9, the gear 1
0, gear 11, shaft 12, and gear 23 to gear 24. The air cylinder 45 shown in FIG. 3 is actuated, the rod 46 is retracted, and the lever 48 rotates counterclockwise in FIG.
a pushes the swing member 51 against the pin 5 against the elastic force of the disc spring 55.
2 is rotated clockwise about the center of rotation. Accordingly, the pressing of the double-sided printing cam 40 that has been pressed by the single-sided printing cam 38 via the adjustment gear 39 by the pressing member 54 is released, and the double-sided printing cam 40 becomes rotatable around the cam base 48. Thus, the phase of the single-sided printing cam 38 can be adjusted.

When a clutch (not shown) between the connecting shaft 30 and the gear 24 is connected, the rotation of the auxiliary driving motor 6 is transmitted to the connecting shaft 30, and as shown in FIG.
The rotation of 0 is transmitted to the shaft 33 via bevel gears 31 and 32, and the phase of the double-sided printing cam 40 is adjusted with respect to the single-sided printing cam 38 via the intermediate gear 35 and the adjustment gear 39.
The printing switching device described above is not different from the printing switching device in the sheet-fed rotary printing press with a reversing mechanism that has been widely used in the past.

Next, referring to FIG. 1, a description will be given of a manual rotation device for manually rotating each body, which is a feature of the present invention. Reference numeral 60 denotes a support plate fixed to stand outside the stud member 4, and a bracket 62 is fixed to the support plate 60 via studs 61, 61.
A limit switch 64 is attached to the bracket 62 via a bracket 63. Reference numeral 65 denotes an operation shaft, and arrows AB represent holes in the support plate 60 and the bracket 62.
The operation shaft 65 is positioned so as to be coaxial with the shaft 12 described above.

A gear 66 is mounted on a protruding end of the operation shaft 65 protruding from the support plate 60, and a concave portion 67 in which the pressing member 25 is engaged is formed on an end surface of the gear 66 facing the gear 23. Have been. A stopper 68 is attached to a portion of the operation shaft 65 near the support plate 60, and an operation member 69 is attached to a portion near the limit switch 64. The other end of the operation shaft 65 has the operation shaft 6
One end of a crank member 70 is fixed to be orthogonal to 5, and a handle 71 is fixed to the other end of the crank member 70.

By moving the operation shaft 65 in the direction of arrow B,
When the stopper 68 is brought into contact with the support plate 60, the gear 66 meshes with the gear 24, and the operation member 69 moves the limit switch 6.
4 is operated. When the limit switch 64 operates, the auxiliary driving motor 6 for printing switching and the driving motor (not shown) for rotating the respective cylinders of the printing press are deactivated. Therefore, when the operating shaft 65 is moved in the direction of arrow B to engage the gear 66 with the gear 24, the handle 71 is gripped by hand, and the operating shaft 65 is rotated via the crank member 70, Since each cylinder rotates, jammed paper can be removed.

In such a configuration, the air cylinder 1
5 is operated to advance the rod 16 to shift the gear 23 to the gear 2
4 and the operation shaft 65 is erroneously moved in the direction of the arrow B during or immediately after the switching operation of the single-sided / double-sided printing, the pressing member 25 of the shaft 12
Engages. Therefore, the movement of the operation shaft 65 in the direction of the arrow B is restricted, and the gear 66 does not mesh with the gear 24. Therefore, it is possible to prevent the displacement of the cylinder phase positioned by switching between single-sided and double-sided printing. it can. Also,
Since the shaft 12 and the operation shaft 65 are provided coaxially, the size of the device is reduced. Further, since the gear 23 and the gear 66 are directly engaged, the number of parts can be minimized, and the structure can be simplified.

In the first embodiment, the shaft 12
And the operating shaft 65 are provided coaxially.
The shaft 12 and the operating shaft 65 do not necessarily need to be coaxially provided as long as the surfaces facing each other engage with each other.

FIG. 4 is a side view showing a cross section of a main part of a second embodiment of the present invention. The second embodiment is different from the first embodiment in that the operation shaft 65 also includes a groove cam 14 and a cam follower 21 provided on the shaft 12.
And the same groove cam 75 and cam follower 76 are provided. That is, when an air cylinder not shown is operated, the pivot 77 rotates clockwise and counterclockwise in the figure,
Since the cam follower 76 moves in the arrow AB direction, the operation shaft 65 is configured to move in the arrow AB direction via the groove cam 75. An air cylinder (not shown) that moves the operation shaft 65 via the groove cam 75 operates in conjunction with the air cylinder 15 that moves the shaft 12.

That is, when the shaft 12 moves in the direction of the arrow A, the operation shaft 65 also moves in the direction of the arrow A, and the state is maintained. When the shaft 12 moves in the direction of the arrow B, the operation shaft 65 can move in the direction of the arrow B. It is configured so that Therefore, when the gear 23 meshes with the gear 24, the gear 66 does not mesh with the gear 24. To engage the gear 66 with the gear 24, the air cylinder 15 is operated to move the shaft 12 in the direction of arrow B, and the engagement of the gear 23 with the gear 24 is released. In this state, the operation shaft 65 can be moved in the direction of arrow B, and the air cylinder (not shown) is operated to operate the gear 6.
By engaging the gear 6 with the gear 24 and operating the handle 71, each body can be rotated. In the second embodiment, it is not always necessary to provide the shaft 12 and the operation shaft 65 coaxially.

FIG. 5 is a side view schematically showing a main part of a third embodiment of the present invention. This third embodiment,
The difference from the above-described first embodiment is that the shaft 12 and the operation shaft 65 are not provided coaxially but are connected via a connecting member 80. That is, the shaft 12 is extended, and one end of the connecting member 80 is
It is mounted so as to be rotatable through the shaft and to restrict movement in the axial direction. The other end of the connecting member 80 is attached to the operating shaft 65 via a sleeve 82 so as to be rotatable and restricted from moving in the axial direction.

In such a configuration, the shaft 12 is
When the gear 23 is moved in the direction indicated by the solid line, that is, meshed with the gear 24, the operating shaft 65 moves in the direction of the arrow A via the connecting member 80. It moves to the position where the meshing with was released. In the case where each body is manually rotated via the handle 71, the shaft 23 is moved in the direction of arrow B to disengage the gear 23 from the gear 24. Go to Instead, the operating shaft 65 moves in the direction of the arrow B via the connecting member 80, so that the gear 66 meshes with the gear 24.

In this embodiment, in the sheet-fed rotary printing press equipped with a reversing mechanism, the drive connecting device of the present invention is provided between a handle for manually rotating each cylinder and an auxiliary driving motor of a print switching device. Applied, but not limited to. For example, in a folding machine of a printing press, it may be used between a handwheel for adjusting the position of the blade of the cutting cylinder and a driving motor for driving the machine. Further, it may be used as a clutch means between a driving motor for driving the inking device of the printing unit and a motor for cleaning the inking device.

[0027]

As described above, according to the first aspect of the present invention, erroneous connection is prevented, so that the apparatus is not damaged.

According to the second aspect of the present invention, the storage space can be reduced, and the device can be downsized.

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of a sheet-fed rotary printing press with a reversing mechanism to which a drive connecting device according to the present invention is applied.

FIG. 2 is a view taken in the direction of the arrow II in FIG.

FIG. 3 is a cross-sectional side view showing a print switching device in a sheet-fed rotary printing press with a reversing mechanism to which the drive connecting device according to the present invention is applied.

FIG. 4 is a cross-sectional side view showing a print switching device in a sheet-fed rotary printing press with a reversing mechanism to which a second embodiment of the drive connection device according to the present invention is applied.

FIG. 5 is a side view schematically showing a third embodiment of the drive connection device according to the present invention.

[Explanation of symbols]

Reference numeral 6: auxiliary driving motor, 12: first shaft, 15: air cylinder, 23: first gear, 24: third gear, 25: pressing member, 39: cam for single-sided printing, 41: cam for double-sided printing , 4
2 cam shaft 65 operating shaft 66 second gear 71
handle.

Claims (2)

[Claims] A first gear pivotally mounted on a first shaft movably supported; a second gear pivotally mounted on a second shaft movably supported; And a third gear meshing with a second gear, wherein the first gear meshes with the third gear so that the second gear is a third gear. A drive coupling device, which is disengaged from the drive coupling device. 2. The drive coupling device according to claim 1, wherein: a moving means for moving a first shaft so as to mesh the first gear with the third gear; and rotationally driving the first gear. And a drive unit for causing the first shaft and the second shaft to be provided substantially coaxially.