JP3363987B2 - Phase adjustment mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder which is integrally rotated by the same driving gear, and a member which needs to adjust the phase in the rotation direction with respect to the cylinder. And a phase adjustment mechanism provided between the two. 2. Description of the Related Art As a specific example of a conventional combination of a body that rotates integrally with the same drive gear and a member that needs to adjust the phase in the rotation direction with respect to the body,
There are a folding cylinder in a rotary press, a folding blade (folding timing into a gripping cylinder), a saw cylinder and a saw blade (cutting position), and the like. FIGS. 3 to 6 show a phase adjusting device provided between a folding cylinder and a folding blade of such a conventional folding machine to adjust folding timing to a folding roller. 3 and 6
The folding cylinder 21 rotatably supported by the driving frame 1a and the operating frame 1b has two sets of needle devices 3 which are swingably attached to a folding cylinder main body 22;
4 and 2 supported to be rotatable by the operation side plate 23.
Set of rotary folding blades 4 and drive shaft end 2 of folding drum main body 22
A main drive helical gear 5 fixed to 2a is provided, and a helical gear 26 for phase adjustment is fixed to the cylindrical shaft portion 24a of the drive side plate 24, The drive-side shaft end 22a and the cylindrical shaft portion 24a are fitted so that they can rotate with each other. When the two-stage cam follower 6 eccentrically attached to the shaft end of the needle device 3 swings by the groove cam 7 fixed to the operation side frame 16, the needle 3 a of the needle device 3 moves in and out of the outer peripheral surface of the folding drum main body 22. Let it. The same main drive requires adjustment of the phase in the rotation direction with respect to the folding cylinder main body 22 which is a cylinder rotated by the helical gear 5.
The gear 8 attached to the shaft end of the folding blade 4, which is a rotating member, is fixed to the driving side plate 24 around the gear 9 fixed to the driving side frame 1 a by the rotation of the folding body 22. It revolves while rotating by way of the planet gear 10 provided. [0003] With the structure of the folding cylinder 21 as described above, the needle 3a of the needle device 3 is pierced between the saw cylinder (not shown) and the folding cylinder 21 at the same time as the piercing of the saw cylinder. When the multiplex web whose front end is cut by the saw blade rotates while rotating around the folding drum main body 22 and rotates by a predetermined angle, the rear end is cut again by the saw blade and becomes a multi-sheet, for example, newspaper. The needle 3a is pulled in at the same timing as this re-cutting, and is folded between the pair of folding rollers 11 by the tip 4a of the rotating folding blade 4 while drawing a trajectory shown by a dashed line in FIG. At the time of the folding, the position of the leading end 4a of the folding blade 4 in contact with the newsprint causes a shift between the front-end cut section and the rear-end cut section of the newsprint folded into two by the folding roller 11, that is, wrap occurs ( (Fig. 5). Conventionally, two methods have been used to adjust the wrap to zero. One of them is that when the folding machine is stopped as shown in FIG. 6, the driving side (or operation side) side plate 24 (or 23) supporting the folding blade 4 with respect to the folding cylinder main body 22 is folded manually. And a phase adjusting device 30 for moving the driving side plate 24 in the rotating direction during the operation of the folding machine as shown in FIG. The phase adjusting device 12 includes a bolt 13 and a nut 15 that are fastened to the folding drum main body 22 via the driving side plate 24 and the washer 16, and a bolt 1.
3 is formed of an adjusting screw 14 which is screwed into the tip of the third body 3 to engage with the stopper 22s of the folding body 22 and a long groove 22g into which the bolt 13 is fitted. Therefore, to adjust the phase, loosen the nut 15 and turn the adjusting screw 14,
The bolt 13 and thus the driving side plate 24 in which the bolt 13 is fitted are moved in the rotational direction along the long groove 22g. Another method is to adjust the phase manually or automatically using a motor when the folding machine is operated. In the case of the automatic adjustment, as shown in FIGS. 3 and 4, the phase adjusting device 30 includes a drive motor 31, a bevel gear 33 paired with a bevel gear 32 fixed to an output shaft of the motor 31, and a bevel gear 33. A screw shaft 34 rotating at 33, a sleeve 38 screwed to the screw shaft 34, a helical gear 35 and 36 rotatably supported by the sleeve 38 and moving together with the sleeve 38, and a rotational speed of the drive motor 31 A helical gear 35 is provided with a sensor 37 such as an encoder for detecting (FIG. 3) or a potentiometer (FIG. 4) for detecting the amount of movement of the sleeve 38.
The main drive helical gear 5 or the helical gear 36 meshes with the phase adjusting helical gear 26, and the helical gears 35 and 36 have the same twist angle and opposite twist directions. I have. Therefore, when the drive motor 31 is rotated by the command number of rotations by a signal issued from the control device 27, the screw shaft 34 is rotated by this rotation, and the sleeve 38
Move in the direction of. Alternatively, the helical gears 35 and 36 move in the same direction, and the main drive helical gear 5
On the other hand, the phase adjusting helical gear 26 rotates together with the helical gears 35 and 36 in the rotating direction (circumferential direction), and the phase adjustment is completed. Since the drive side plate 24 and the operation side plate 23 (via the axis of the folding blade 4) are rotated with respect to the folding drum main body 22 by the above-described phase adjustment, the tip of the folding blade with respect to the penetrating position of the needle 3 is set. The folding position of 4a is moved in the circumferential direction of the folding cylinder 21, the folding timing of the tip 4a into the pair of folding rollers 11 is changed, and the wrap is adjusted to be zero. The control device 27 stores adjustment data (in terms of the number of rotations of the motor 31) for setting the wrap to zero at each folding machine speed for each page of the newspaper and each paper quality. Reference numeral 28 denotes a lap amount display provided in the control device 27, and reference numeral 29 denotes a sensor for detecting the folding machine speed. However, in such a conventional phase adjusting mechanism, the helical gears 35 and 36 which move in the axial direction as described above are mainly driven by the helical gear 5 and the phase adjusting mechanism. In order to mesh with the outside of the helical gear 26,
A large space is required around the main driving helical gear 5 and the phase adjusting helical gear 26, and if the space cannot be secured, the helical gears 35 and 36 that move in the axial direction.
Installation was difficult or impossible. The main driving helical gear 5 and the phase adjusting helical gear 2 having high precision and large diameter corresponding to the helical gears 35 and 36 moving in the axial direction.
6 is required, so that there is a disadvantage that the weight of the parts increases. In addition, the mesh width of the helical gears 35 and 36 has to be widened in consideration of the amount of movement, resulting in an increase in weight and space and an increase in cost. An object of the present invention is to solve the problems of the conventional phase adjustment mechanism and provide a compact phase adjustment mechanism that can be installed in a narrow space. [0008] Therefore, the present invention provides a rotating drum and a member that needs to adjust the phase in the rotating direction with respect to the rotating drum, so that the rotating drum is integrated with the rotating drum. In a phase adjustment mechanism for adjusting the phase in the rotation direction, the shaft of the helical gear for adjusting the phase with the body of the member is provided through a main drive gear for driving the body. This is a means for solving the problem. According to the present invention, the helical gear A, which moves in the axial direction of the barrel, needs to adjust the phase in the rotation direction with respect to the barrel by the above means, and rotates with the shaft of the barrel. Since the helical gear B is meshed with the helical gear B, the torsion angle of the helical gears A and B can be increased by moving the helical gear A by a device that moves the helical gear A in the axial direction. Accordingly, the helical gear B rotates in the rotation direction, and the phase of the member whose phase in the rotation direction needs to be adjusted can be adjusted. Since the axis of the helical gear A or the axis of the helical gear meshing with the helical gear A is provided to penetrate through the main drive gear,
The helical gear A can be installed irrespective of the size of the space around the outer periphery of the main drive gear, and the entire phase adjustment mechanism can be compactly assembled. The large-diameter helical gear is only the main drive helical gear, and the helical gear for phase adjustment and the helical gear for rotating the helical gear may have a small diameter and move in the axial direction. Since the small diameter may be widened in consideration of the movement amount of only the width of the helical gear, the weight of the device is reduced as compared with the conventional one. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described. FIGS. 1 and 2 show a first and a second embodiment of the phase adjusting mechanism of the present invention. FIG. 1 shows a phase adjusting mechanism which is mounted corresponding to a portion of the folding cylinder main body 22 of the folding cylinder 21 shown in FIG. Is shown. The structure of the folding cylinder 21 from the inside of the driving side frame 1a to the outside of the operation side frame 1b is the same as that shown in FIGS. 3, 5 and 6. Further, the phase adjusting device 40 shown in FIG. 1 includes a drive motor 31, a bevel gear 33 that meshes with a bevel gear 32 fixed to an output shaft of the drive motor 31, and a screw shaft that is rotated by the bevel gear 33 34, a bearing 41 screwed to the screw shaft 34, a helical gear 42 rotatably supported by the bearing 41, and attached to the main drive gear 5 via a slide key 46 so as to be movable in the axial direction. The helical gear 44 meshes with the helical gear 42, penetrates the main drive gear 5, and is supported on the bush 43 of the main gear 5 so that the shaft 44 a can rotate. It comprises a helical gear 45 and a sensor 37 for detecting the rotation speed of the motor 31. The phase adjusting helical gear 26 meshed with the helical gear 45 is fixed to the cylindrical shaft portion 24a of the driving side plate 24 (FIG. 3).
4a is rotatably fitted to the drive side shaft portion 22a. FIG. 2 shows a second embodiment of the present invention.
The phase adjusting device 50 is similar to the first embodiment shown in FIG.
Drive motor 31, bevel gears 32 and 33, screw shaft 34, sensor 37, bearing 41 screwed to screw shaft 34, main drive gear 5
A moving cylinder 51 attached to the moving cylinder 51 via a slide key 46,
The bush 4 of the main drive gear 5 fixed to the moving cylinder 51
Axles 52, 43 supported movably by
52 and a helical gear 53 fixed to each shaft 52. Each helical gear 53 meshes with the phase adjusting helical gear 26 as in FIG. With the structure of the embodiment shown in FIGS. 1 and 2, when the drive motor 31 is rotated by the command rotation speed by a signal issued from the control device 27 similar to that shown in FIG. When the screw shaft 34 rotates and the bearing 41 screwed to the screw shaft 34 moves in the direction of the screw shaft 34, in the first embodiment of FIG. The helical gear 44 meshes with the helical gear 42, and rotates the helical gear 44 meshing with the helical gear 42. This rotation rotates the helical gear 45, and further the helical gear 45 meshes with the helical gear 45. Since the gear 26 rotates in the circumferential direction, the movement adjustment of the cylindrical shaft portion 24a with respect to the folding drum main body 22 is completed. In the second embodiment shown in FIG. 2, the moving cylinder 51 moves directly in the axial direction via the bearing 41, and the helical gear 53 moves in the axial direction via the shaft passing through the main drive gear 5. Therefore, the phase adjusting helical gear 26 meshing with the helical gear 53 rotates in the circumferential direction, and the phase adjustment is completed. After the phase adjustment is completed, the position of the bearing 41 and the helical gear 42 or the position of the bearing 41 and the moving cylinder 51 are fixed.
From the gear 42 via the slide key 46 or the moving cylinder 5
The driving force is transmitted to 1 and the helical gear 26 for phase adjustment rotates integrally with the main driving gear 5 while maintaining the adjusted phase. In addition, instead of the motor for phase adjustment,
You can also attach a handwheel. As described in detail above, it is necessary to adjust the phase in the rotation direction with respect to the cylinder rotated by the main drive gear by the phase adjustment mechanism of the present invention, and is integral with the cylinder. Since the shaft of the helical gear that rotates the helical gear of the member that rotates through the main drive gear is provided,
Not only the phase adjustment in the rotation direction becomes easy, but also the helical gear that moves in the axial direction can be installed regardless of the size of the outer peripheral space of the main drive gear, and the phase adjustment mechanism as a whole can be installed. It can be compact and can reduce weight.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front sectional view of a phase adjusting mechanism applied to a folding cylinder according to a first embodiment of the present invention. FIG. 2 is a front sectional view of a phase adjusting mechanism applied to a folding cylinder according to a second embodiment of the present invention. FIG. 3 is a front sectional view of a phase adjusting device and a folding cylinder applied to a conventional folding cylinder. FIG. 4 is a plan sectional view of a phase adjusting device and a folding cylinder applied to a conventional folding cylinder. FIG. 5 is a side view of a conventional folding cylinder. FIG. 6 is an enlarged plan view of a conventional phase adjusting device used when the folding device is stopped. [Description of Signs] 5 Main drive gears 22 and 22a Folding cylinder main body and its drive side shaft 24 Drive side plate 24a Cylindrical shaft 26 Phase adjusting helical gear 31 Drive motor 34 Screw shaft 37 Sensor 40 Phase adjuster 41 Bearing 42 Helical gear 43 Bush 44, 45, 53 Helical gear 44 a Helical gear shaft 46 Slide key 50 Phase adjustment device 51 Moving cylinder 52 Shaft

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-99166 (JP, A) JP-A-62-70174 (JP, A) Fully open Showa 62-50174 (JP, U) Really open Showa 63- 104375 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65H 45/28 B41F 13/00

Claims (1)

(57) [Claim 1] A rotating body and a member whose phase in the rotating direction needs to be adjusted with respect to the rotating body are integrated with each other, and the rotating body is In the phase adjusting mechanism for adjusting the phase, a shaft of the helical gear for rotating the phase adjusting helical gear with the body of the member is provided through a main drive gear for driving the body. Phase adjustment mechanism.