JPH07242367A - Phase adjusting mechanism - Google Patents

Abstract

PURPOSE:To provide a mechanism for adjusting the phase of folded blade, etc., relative to a compact folded drum main body which can be set in a small space. CONSTITUTION:In a body 22 in which a rotating body 22 is integrated with a member of which phase in the rotating direction must be adjusted relative to the body 22 and rotated together, a shaft 44a of a helical gear 44 to rotate a helical gear 26 for adjusting a phase of the member relative to that of the body 22 is provided by passing through a main drive gear 5 which drives the body 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phase adjusting mechanism provided between a cylinder that rotates integrally by the same driving gear and a member that needs to adjust the phase in the rotational direction with respect to the cylinder. Is.

[0002]

2. Description of the Related Art As a concrete example of a combination of a cylinder that is integrally rotated by the same drive gear and a member that needs to adjust the phase in the rotation direction with respect to the cylinder,
There are a folding cylinder in a folding machine of a rotary press, a folding blade (a timing for folding into a gripper cylinder), a saw cylinder and a saw blade (cut position), and the like. 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 a folding timing to a folding roller. 3 and 6
In the folding cylinder 21, which is rotatably supported by the driving-side frame 1 a and the operating-side frame 1 b, two sets of needle devices 3 that are swingably attached to the folding-cylinder body 22 and the driving-side plate 2 are provided.
4 and 2 rotatably supported on the operating side plate 23
A pair of rotary folding blades 4 and a drive side shaft end 2 of the folding cylinder body 22.
The main drive helical gear 5 fixed to 2a is provided, and the phase adjusting helical gear 26 is fixed to the cylindrical shaft portion 24a of the drive side plate 24, and the main body of the folding cylinder main body 22 is fixed. The drive side shaft end 22a and the cylindrical shaft portion 24a are fitted so as to be rotatable with respect to each other. When the two-step 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 3a of the needle device 3 moves in and out from the outer peripheral surface of the folding cylinder body 22. Let Further, the same main drive requires the adjustment of the phase in the direction of rotation 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 member that rotates together with the folding blade 4 is fixed to the driving side plate 24 around the gear 9 that is fixedly installed on the driving frame 1a by the rotation of the folding body 22. It revolves while rotating on its axis via the planetary gear 10 provided.

Due to the structure of the folding cylinder 21 as described above, it is pierced between the saw cylinder (not shown) and the folding cylinder 21 by the protrusion of the needle 3a in the needle device 3, and at the same time, the saw cylinder When the multiple web whose front end is cut by the saw blade is rotated while being wound around the folding cylinder body 22 and rotated by a predetermined angle, the rear end is cut again by the saw blade and becomes a multiple sheet, for example, newspaper. The needle 3a is pulled in at the same timing as this cutting again, and is folded between the pair of folding rollers 11 by the tip 4a of the folding blade 4 which rotates while drawing a locus indicated by a chain line in FIG. At the time of this folding, the tip 4a of the folding blade 4 changes its position in contact with the newspaper, so that a deviation, that is, a wrap, occurs between the front cut section and the rear cut section of the newspaper folded in two by the folding roller 11. Figure 5).

Conventionally, two methods have been used to adjust the lap 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 body 22 is manually folded. 3 is provided with a phase adjusting device 12 for moving the drive side plate 24 in the rotating direction during the folding machine operation as shown in FIG. The phase adjusting device 12 includes a bolt 13 and a nut 15 that are fastened to the folding cylinder main body 22 via the drive side plate 24 and the washer 16, and the bolt 1.
The adjusting screw 14 is engaged with the stopper 22s of the folding cylinder main body 22 by being screwed to the tip of the folding cylinder main body 3, and the long groove 22g of the folding cylinder main body 22 into which the bolt 13 is fitted. Therefore, for phase adjustment, loosen the nut 15 and turn the adjustment screw 14,
The bolt 13 and hence the drive side plate 24 into which the bolt 13 is fitted are moved in the rotational direction along the long groove 22g.

The other is a method of manually or automatically using a motor to adjust the phase when the folding machine is in operation. In the case of automatic adjustment, as shown in FIGS. 3 and 4, the phase adjustment device 30 includes a drive motor 31, a bevel gear 33 fixed to the output shaft of the motor 31, and a bevel gear 33 paired with the bevel gear 33. The rotation speed of the screw shaft 34 that rotates at 33, the sleeve 38 that is screwed to the screw shaft 34, the helical gears 35 and 36 that are rotatably supported by the sleeve 38, and move together with the sleeve 38, and the drive motor 31. A sensor 37 such as an encoder (FIG. 3) for detecting or a potentiometer (FIG. 4) for detecting the movement amount of the sleeve 38 is provided, and the helical gear 35 is provided.
Is engaged with the main drive helical gear 5 or the helical gear 36 is meshed with the phase adjusting helical gear 26. These helical gears 35 and 36 have the same twist angle but opposite twist directions. There is. Therefore, when the drive motor 31 is rotated by the command rotation speed by the signal issued from the control device 27, this rotation causes the screw shaft 34 to rotate, and the sleeve 38 causes the screw shaft 34 to rotate.
Move in the direction of. Alternatively, the helical gears 35 and 36 also move in the same direction, and the main drive helical gear 5 for helical meshing.
On the other hand, together with the helical gears 35 and 36, the phase adjusting helical gear 26 rotates in the rotation direction (circumferential direction) and the phase adjustment is completed.

Since the driving side plate 24 and the operating side plate 23 (via the shaft of the folding blade 4) are rotated with respect to the folding barrel main body 22 by the phase adjustment, the tip of the folding blade with respect to the piercing position of the needle 3 is rotated. The folding position of 4a moves in the circumferential direction of the folding cylinder 21, the timing of folding the tip 4a into the pair of folding rollers 11 changes, and the wrap is adjusted to zero. The control device 27 stores adjustment data (at the number of rotations of the motor 31) for making the lap zero at each folding machine speed for each newspaper page and quality. Further, 28 is a lap amount indicator provided in the control device 27, and 29 is a sensor for detecting the folding speed.

[0007]

However, in such a conventional phase adjusting mechanism, the helical gears 35 and 36 that move in the axial direction as described above are the main drive helical gears 5 and the phase adjusting helical gears. In order to engage with the outside of the gear 26,
A large space is required around the main drive helical gear 5 and the phase adjusting helical gear 26. If the space cannot be secured, the helical gears 35 and 36 that move in the axial direction are required.
Was difficult or impossible to install. Further, the main drive helical gear 5 and the phase adjusting helical gear 2 having a high precision and a large diameter corresponding to the helical gears 35 and 36 which move in the axial direction.
Since 6 is required, there is a drawback that the weight of parts increases. In addition, the gear width of the helical gears 35 and 36 must be widened in consideration of the amount of movement, resulting in an increase in weight and space, which inevitably results in high cost. The present invention is intended to solve the various problems in the conventional phase adjusting mechanism and to provide a compact phase adjusting mechanism which can be installed in a narrow space.

[0008]

For this reason, according to the present invention, the rotating cylinder and the member for adjusting the phase in the rotational direction with respect to the cylinder are integrated, and the rotating cylinder is rotated in the rotational direction. In the phase adjusting mechanism for adjusting the phase of, the shaft of the helical gear that rotates the helical gear for phase adjustment with the body of the member is provided through the main drive gear that drives the body. , Is a means for solving the problems.

[0009]

According to the present invention, the helical gear A, which moves in the axial direction of the cylinder, needs to adjust the phase in the rotational direction with respect to the cylinder, and can rotate on the axis of the cylinder by the above means. Since it is meshed with the helical gear B of the member installed at, when the helical gear A is moved by a device that moves in the axial direction, the helical gears A and B are The helical gear B rotates in the rotation direction, and the phase of a member that needs to adjust the phase in the rotation direction can be adjusted. Since the shaft of the helical gear A or the shaft of the helical gear that meshes with the helical gear A is provided so as to penetrate through the main drive gear,
The helical gear A can be installed regardless of whether the space around the outer periphery of the main drive gear is wide or narrow, and the entire phase adjusting mechanism can be compactly assembled. The large-diameter helical gear is the main drive helical gear only, and the phase-adjusting helical gear and the helical gear that rotates 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.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show first and second embodiments of a phase adjusting mechanism of the present invention. FIG. 1 is a phase adjustment mechanism attached to the portion (the XX arrow view) of the drive side shaft end 22a of the folding cylinder body 22 of the folding cylinder 21 shown in FIG. 3 protruding outward from the drive side frame 1a. Indicates. The structure of the folding cylinder 21 from the inside of the drive 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 of FIG. 1 includes a drive motor 31, a bevel gear 33 fixed to the output shaft of the drive motor 31, and a bevel gear 33 that meshes with the bevel gear 32 and a screw shaft that rotates 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 axially movable, The helical gear 44 meshes with the helical gear 42, penetrates through the main drive gear 5, and is fixed to the helical gear 44 and the coaxial shaft 44a which are supported by a bush 43 of the main gear 5 so that a shaft 44a can rotate. It is composed of a helical gear 45 and a sensor 37 that detects the number of rotations of the motor 31. The phase-adjusting helical gear 26 with which the helical gear 45 meshes is fixed to the cylindrical shaft portion 24a of the drive 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
The bush 4 of the main drive gear 5 is fixed to the moving cylinder 51.
A shaft 52 movably supported by 3, 43
52 and a helical gear 53 fixed to each shaft 52. Further, 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 the signal issued from the control device 27 similar to that shown in FIG. When the screw shaft 34 rotates and the bearing 41 screwed onto the screw shaft 34 moves in the direction of the screw shaft 34, in the first embodiment of FIG. 1, the helical gear 42 is rotated via the bearing 41. Direction, the helical gear 44 that meshes with the helical gear 42 is rotated, the helical gear 45 is rotated by this rotation, and 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 cylinder body 22 is completed. In the second embodiment of FIG. 2, the moving cylinder 51 directly moves in the axial direction via the bearing 41, and the helical gear 53 moves in the axial direction via the shaft penetrating the inside of the main drive gear 5. Therefore, the phase adjusting helical gear 26 that meshes 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 is fixed, so that the main drive gear 5
From the gear 42 through the slide key 46, or the movable cylinder 5
The driving force is transmitted to the gear 1 and the phase adjusting helical gear 26 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 manual handle.

[0013]

As described in detail above, it is necessary to adjust the phase in the direction of rotation with respect to the cylinder rotated by the main drive gear by the phase adjusting mechanism of the present invention, and it rotates integrally with the cylinder. Since the shaft of the helical gear that rotates the helical gear of the member is provided through the main drive gear,
Not only can phase adjustment in the rotation direction be facilitated, but a helical gear that moves in the axial direction can be installed regardless of the size of the space around the outer periphery of the main drive gear, and the phase adjustment mechanism as a whole can be installed. It can be compacted and the weight can be reduced.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view of a phase adjusting mechanism applied to a folding cylinder according to a first exemplary 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.

[Explanation of symbols]

 5 Main drive gears 22, 22a Folding cylinder main body and its drive side shaft 24 Drive side plate 24a Cylindrical shaft 26 Helical gear for phase adjustment 31 Drive motor 34 Screw shaft 37 Sensor 40 Phase adjuster 41 Bearing 42 Helical Gear 43 Bushing 44, 45, 53 Helical Gear 44a Helical Gear Shaft 46 Slide Key 50 Phase Adjuster 51 Moving Cylinder 52 Shaft

Claims (1)

[Claims] 1. A phase adjusting mechanism for adjusting a phase in a rotation direction with respect to a rotating cylinder by integrating a rotating cylinder and a member that needs to adjust a phase in a rotation direction with respect to the cylinder. A phase adjusting mechanism characterized in that a shaft of a helical gear for rotating a helical gear for phase adjustment with the body of the member is provided so as to pass through a main drive gear for driving the body.