JP3889884B2 - Drive coupling device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drive coupling device that selectively couples two drive systems to one rotation transmission system.
[0002]
[Prior art]
For example, in a sheet-fed rotary printing press with a reversing mechanism, a drive system constituted by a gear group of cylinders that rotates each cylinder is provided with a gear that can be engaged and disengaged. Is rotated by a motor, and the phase of the cylinder is changed to switch from single-sided printing to double-sided printing. In addition, this drive system is provided with another gear that can be engaged and released, and when paper is jammed between the cylinders during printing, this other gear is engaged with the drive system and the handle is manually operated. Thus, the cylinder is rotated to remove the jammed paper.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional drive coupling device, since the two gears can be engaged with the drive system at the same time, during or immediately after positioning the cylinder phase so as to correspond to single-sided printing to double-sided printing. In addition, if the handle is accidentally operated, the phase of the cylinder is shifted, and if the printing press is driven as it is, the machine may be damaged due to the shift of the phase of the cylinder.
[0004]
The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a drive coupling device that prevents erroneous coupling.
[0005]
[Means for Solving the Problems]
In order to achieve this object, a drive coupling device according to the present invention includes a first gear that is pivotally supported on a first shaft that is movably supported, and a second gear that is movably supported. In a drive coupling device comprising a second gear that is worn and a third gear that meshes with the first gear and the second gear, the first gear and the third gear mesh with each other. In this state, the movement of the second gear in the direction of meshing with the third gear is restricted to the first shaft to prevent the meshing of the second gear and the third gear. A pressing member is provided.
Therefore, the first gear and the second gear do not mesh with the third gear at the same time.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a cross section of a main part of a sheet-fed rotary printing press with a reversing mechanism to which a drive coupling device according to the present invention is applied, FIG. 2 is a view taken along the line II in FIG. 1, and FIG. FIG.
In FIG. 1, reference numeral 1 a denotes a driving-side frame, and a bracket 3 having a substantially square cross section is attached to the frame 1 a via a stud 2. The support plate 5 is attached via the stud members 4, 4. An auxiliary driving motor 6 is fixed to the support plate 5, and a motor shaft 7 of the auxiliary driving motor 6 is coupled to one end of a transmission shaft 9 rotatably supported by the bracket 3 via a coupling 8. . A gear 10 having a large tooth width is attached to the other end of the rotary shaft 9, a gear 11 is engaged with the gear 10, the gear 11 is attached to a shaft 12, and the shaft 12 is attached to the bracket 3. And is supported so as to be movable in the direction of arrows AB in the figure.
[0007]
A groove cam 14 having a groove formed by a pair of opposing disks 14a, 14a is fixed to one end of the shaft 12 protruding toward the frame 1a. In FIG. 2, 15 is 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 pivot 18 is rotatably supported by a shaft support member 19 fixed to the bracket 3, and the other end of the lever 17 is pivotally attached to one end. One end of a lever 20 is pivotally attached to the other end of the pivot 18, and a cam follower 21 engaged with the groove of the groove cam 14 is supported on the other end of the lever 20. Therefore, when the air cylinder 15 is actuated and the rod 16 moves forward, the pivot 18 rotates in the clockwise direction in FIG. 1 and the cam follower 21 moves in the direction of arrow A, so that the shaft 12 moves in the direction of arrow A. A gear 23 pivotally attached to the other end protruding from the 12 brackets 3 is configured to mesh with the gear 24. 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.
[0008]
Reference numeral 26 denotes a pulley, and the rotation of a driving motor (not shown) is transmitted through a belt. The gear 24 is fixed to the pulley 26, and the shaft is connected to one end portion of the drive shaft 27 via the pulley 26. It is worn. 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 attached to the other end. The gear 29 is engaged with a gear that is attached to the end shaft of the impression cylinder of the first printing unit (not shown). Accordingly, the rotation of the auxiliary driving motor 6 is configured to be transmitted to the impression cylinder via the gears 10, 11, 23, 24, and 29.
[0009]
In FIG. 3, reference numeral 30 denotes a connecting shaft, and this connecting shaft 30 is pivotally attached to the end shaft on the frame 1b side on the operation side of the impression cylinder that is rotated by the rotation of the auxiliary driving motor 6 described above. The rotation of the auxiliary driving motor 6 is transmitted via gears, clutch means, bevel gears and the like (all not shown). The connecting shaft 30 is rotatably supported by a shaft support member 36 fixed to the outside of the frame 1 b, and a bevel gear 31 is pivotally attached to one end of the connecting shaft 30. 32 is engaged. The bevel gear 32 is pivotally attached to one end of a shaft 33, and the shaft 33 is rotatably supported by a frame 1 b and a bracket 34, and has a projecting end projecting into the frame 1 b at the other end of the shaft 33. An intermediate gear 35 is attached to the shaft.
[0010]
An annular cam base 37 provided concentrically with the impression cylinder 36 of the second printing unit is fixed to the inner surface of the frame 1b with bolts. An annular single-sided printing cam 38 is supported on the cam base 37 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 with bolts. An annular adjustment gear 39 that meshes with the intermediate gear 35 described above is supported on the outer peripheral surface of the cam base 37. An annular double-sided printing cam 40 that functions as a moving cam is supported on the adjustment gear 39 so that its outer peripheral cam surface is in contact with the cam follower 44, and is fixed to the adjustment gear 39 by bolts.
[0011]
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 divided into two equal parts in the circumferential direction. A supported claw shaft 42 is provided. Each claw shaft 42 is provided with a gripper claw device, a lever 43 is fixed to both ends of the claw shaft 42, and a wide cam follower 44 is pivotally attached to the free end portion by a pin. Yes.
In such a configuration, when the connecting shaft 30 is rotated, the adjustment gear 39 is rotated via the bevel gears 31 and 32, the shaft 33, and the intermediate gear 35, and the double-sided printing cam 40 and the frame that are integrated therewith, the frame The phase with the single-sided printing cam 38 fixed to is adjusted to switch between single-sided printing and double-sided printing.
[0012]
Reference numeral 45 denotes an air cylinder. One end of a lever 47 is fixed to the rod 46, and one end of a lever 48 is pivotally attached to the other end of the lever 47. A concave portion 49 is formed on the outer surface of the frame 1 b, and a fixed base 50 is fixed to the bottom portion of the concave portion 49. The other end of the lever 48 described above is rotatably supported on the fixed base 50 via a pin 51, and a cam portion 48 a projects from the other end of the lever 48. . Reference numeral 51 denotes a swinging member, which is supported so as to be swingable via pins 52 laid horizontally on both sides of the recess 49 so that one end engages with the cam portion 48a of the lever 48. The adjustment screw 53 is screwed and the tip protrudes.
[0013]
Reference numeral 54 denotes a substantially cylindrical presser, which presses the tip of the adjustment screw 53 described above with a disc spring 55 and rotates the swinging member 51 counterclockwise in the figure around the pin 52 as a rotation center. It is energized to do. An insertion hole 49a is formed in a portion corresponding to the adjustment gear 39 at the bottom of the concave portion 49 of the frame 1b, and a substantially cylindrical pressing member 54 is slidable in the direction of arrows AB in the insertion hole 49a. It is supported. A pin 55 implanted on the side surface of the upper end portion of the pressing member 54 is engaged with the lower end of the other end of the swing member 51.
[0014]
In such a configuration, when the double-sided printing changeover switch (not shown) is activated, the air cylinder 15 in FIG. 2 operates and the rod 16 moves forward, so that the cam follower 21 moves in the direction of arrow A in FIG. Since the shaft 12 moves in the arrow A direction, the gear 23 meshes with the gear 24. At this time, since the tooth width of the gear 10 is formed large, the gear 10 and the gear 11 are kept in mesh.
[0015]
In FIG. 1, the auxiliary driving motor 6 starts to rotate, and the rotation is transmitted to the gear 24 through the motor shaft 7, the transmission shaft 9, the gear 10, the gear 11, the shaft 12, and the gear 23. The air cylinder 45 shown in FIG. 3 is activated, the rod 46 is retracted, the lever 48 is rotated counterclockwise around the pin 51, and the large-diameter portion 48a of the lever 48 The pin 52 is rotated clockwise around the pin 52 against the elastic force of the disc spring 55. Therefore, the pressing of the double-sided printing cam 40 that has been pressed against 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 can rotate around the cam base 48. Thus, phase adjustment with respect to the single-sided printing cam 38 becomes possible.
[0016]
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 double-sided printing cam 40 is phase-adjusted with respect to the single-sided printing cam 38 via the intermediate gear 35 and the adjustment gear 39. The print switching device described above is not particularly different from the print switching device in a sheet-fed rotary printing press with a reversing mechanism that has been widely used conventionally.
[0017]
Next, based on FIG. 1, a manual rotation device that manually rotates each cylinder, which is a feature of the present invention, will be described.
A support plate 60 is fixed so as to stand on the outside of the stud member 4. A bracket 62 is fixed to the support plate 60 via studs 61, 61, and a bracket 63 is attached to the bracket 62. A limit switch 64 is attached. Reference numeral 65 denotes an operation shaft, which is supported by the holes of the support plate 60 and the bracket 62 so as to be slidable in the direction of arrows A-B. The operation shaft 65 is positioned so as to be coaxial with the shaft 12 described above. Yes.
[0018]
A gear 66 is pivotally attached to the projecting end of the operation shaft 65 projecting from the support plate 60, and a recess 67 into which the pressing member 25 is engaged is formed on the end surface of the gear 66 facing the gear 23. . A stopper 68 is attached to a part of the operation shaft 65 close to the support plate 60, and an operation member 69 is attached to a part close to the limit switch 64. One end of the crank member 70 is fixed to the other end of the operation shaft 65 so as to be orthogonal to the operation shaft 65, and a handle 71 is fixed to the other end of the crank member 70.
[0019]
When the operating shaft 65 is moved in the direction of arrow B and the stopper 68 is brought into contact with the support plate 60, the gear 66 is engaged with the gear 24, and the operating member 69 operates the limit switch 64. When the limit switch 64 is operated, the auxiliary driving motor 6 for switching printing and the driving motor (not shown) for rotating each cylinder of the printing press are deactivated. Therefore, when the operating shaft 65 is moved in the direction of arrow B, the gear 66 is engaged with the gear 24, the handle 71 is gripped by hand and the operating shaft 65 is rotated via the crank member 70, the gear 24 is As each cylinder rotates, the jammed paper can be removed.
[0020]
In such a configuration, the air cylinder 15 is actuated to advance the rod 16 to engage the gear 23 with the gear 24, and the operation shaft 65 is mistakenly moved in the direction of arrow B during or after the switching operation of single-sided / double-sided printing. The pressing member 25 of the shaft 12 is engaged with the concave portion 67 of the gear 66 even when moved to. Accordingly, the movement of the operation shaft 65 in the direction of 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. Further, since the shaft 12 and the operation shaft 65 are provided on the same axis, the apparatus can be miniaturized. 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.
[0021]
In the first embodiment, the shaft 12 and the operation shaft 65 are provided coaxially. However, as long as the opposing surfaces of the gear 23 and the gear 66 are engaged, the shaft 12 and the operation shaft 65 are operated. The shaft 65 is not necessarily provided coaxially.
[0022]
FIG. 4 is a side view showing a cross section of the main part of the second embodiment of the present invention.
The second embodiment is different from the first embodiment described above in that the operation shaft 65 is also provided with a groove cam 75 and a cam follower 76 that are the same as the groove cam 14 and the cam follower 21 provided on the shaft 12. There is in point. That is, when the air cylinder (not shown) is operated, the pivot 77 rotates in the clockwise and counterclockwise directions in the figure, and the cam follower 76 moves in the direction of the arrow AB, so that the operating shaft 65 is moved via the groove cam 75. It is comprised so that it may move to the arrow AB direction. The air cylinder (not shown) that moves the operating shaft 65 via the groove cam 75 operates in conjunction with the air cylinder 15 that moves the shaft 12.
[0023]
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 this 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. Therefore, when the gear 23 is engaged with the gear 24, the gear 66 is not engaged with the gear 24. In order 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. Therefore, the air cylinder (not shown) is operated, the gear 66 is engaged with the gear 24, and the handle 71 is operated. Each cylinder can be rotated.
In the second embodiment, the shaft 12 and the operation shaft 65 are not necessarily provided coaxially.
[0024]
FIG. 5 is a side view schematically showing the main part of the third embodiment of the present invention.
The third embodiment is different from the first embodiment described above in that the shaft 12 and the operation shaft 65 are not provided coaxially but are connected via a connecting member 80. is there. That is, the shaft 12 is extended, and one end of the connecting member 80 is attached to the extended portion via the sleeve 81 so as to be rotatable and to be restricted from moving in the axial direction. The other end of the connecting member 80 is attached to the operation shaft 65 so as to be rotatable via a sleeve 82 and to be restricted from moving in the axial direction.
[0025]
In such a configuration, when the shaft 12 is moved in the direction of arrow A and the gear 23 is engaged with the position indicated by the solid line, that is, the gear 24, the operation shaft 65 moves in the direction of arrow A via the connecting member 80. The gear 66 moves to a position indicated by a solid line, that is, a position where the meshing with the gear 24 is released. Further, when each cylinder is manually rotated via the handle 71, the position indicated by the two-dot chain line in the figure where the gear 23 is disengaged from the gear 24 by moving the shaft 12 in the arrow B direction. Move to. Instead, the operating shaft 65 moves in the direction of arrow B via the connecting member 80, so that the gear 66 meshes with the gear 24.
[0026]
In the present embodiment, the drive coupling device of the present invention is applied between the handle for manually rotating each cylinder and the auxiliary driving motor of the print switching device in the sheet-fed rotary printing press with a reversing mechanism. It is not limited to this. For example, in a folding machine of a printing press, it may be used between a steering handle for adjusting the position of the blade of the cutting cylinder and a driving motor for driving the printer. Moreover, you may use as a clutch means between the motor for driving the inking apparatus of a printing unit, and the motor for wash | cleaning an inking apparatus.
[0027]
【The invention's effect】
As described above, according to the first aspect of the present invention, misconnection is prevented, so that the apparatus is not damaged.
[Brief description of the drawings]
FIG. 1 is a side view showing a cross section of a print switching device showing a cross section of a main part of a sheet-fed rotary printing press with a reversing mechanism to which a drive coupling device according to the present invention is applied.
FIG. 2 is a view taken along arrow II in FIG.
FIG. 3 is a side view showing a cross section of a print switching device in a sheet-fed rotary printing press with a reversing mechanism to which a drive coupling device according to the present invention is applied.
FIG. 4 is a side view showing a cross section of a print switching device in a sheet-fed rotary printing press with a reversing mechanism to which a second embodiment of the drive coupling device according to the present invention is applied.
FIG. 5 is a side view schematically showing a third embodiment of the drive coupling device according to the present invention.
[Explanation of symbols]
6 ... auxiliary driving motor, 12 ... first shaft, 15 ... air cylinder, 23 ... first gear, 24 ... third gear, 25 ... pressing member, 39 ... single-sided printing cam, 41 ... double-sided printing cam 42 ... cam shaft, 65 ... operation shaft, 66 ... second gear, 71 ... handle.

Claims (1)

A first gear pivotally attached to a first shaft supported movably;
A second gear pivotally mounted on a second shaft supported movably;
In the drive coupling device including the first gear and the third gear meshing with the second gear,
In a state where the first gear and the third gear are meshed with each other, the movement of the second gear in the direction of meshing with the third gear is restricted on the first shaft. 2. A drive coupling device comprising a pressing member that prevents meshing between the second gear and the third gear.

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