JPH0229079Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is a meandering adjustment device for a strip of material, more specifically, a device for adjusting the meandering of a strip of film, paper, cloth, etc. that is continuously running in a coating machine, printing machine, or other processing machine. The present invention relates to a device that adjusts the meandering of a strip in the width direction.

[Conventional technology]

When applying appropriate treatment to a continuously running strip using a coating machine, printing machine, or other processing machine, the strip may be subject to changes in tension, uneven thickness, temperature changes inside the machine, deformation of the strip, etc. during its running. As a result, once the meandering begins in the width direction, it is necessary to correct the meandering. Conventionally, as a device for adjusting the meandering of the above-mentioned strip-like material, a roll type device using an adjustment roll movable in the width direction has been widely adopted.

[The problem that the idea attempts to solve]

For example, for a magnetic tape to be assembled into a magnetic tape cartridge, a polyester film is coated with a magnetic powder coating, and then introduced into a dryer and dried. At this time, the magnetic tape inside the dryer is blown with hot air from above and below and runs at high speed in a floating state with low tension, so it is likely to meander. Therefore, in the past, the meandering of the magnetic tape was corrected by moving the rotating roll in the width direction, but with this, the magnetic tape did not adhere sufficiently to the surface of the rotating roll, and there was a gap between the magnetic tape and the rotating roll. A slipping condition occurred and the meandering of the magnetic tape could not be properly controlled.

[Means to solve the problem]

The present invention was proposed in view of the above-mentioned conventional drawbacks, and includes a rotating roll for meandering adjustment, which is installed perpendicular to the running path of the strip and has support shafts at both ends, and a rotating roll for adjusting the meandering of the strip. a drive mechanism for rotationally driving the rotary roll in synchronization with the traveling speed of the rotary roll, wherein the supporting shafts at both ends of the rotary roll for meandering adjustment are rotatable and supported by bearing bodies movable in the width direction of the roll, and One of the bearing bodies supports a support shaft that is spline-coupled with the drive shaft of the drive mechanism, and the other bearing body is driven by a detection signal from a side edge detection element of a strip placed opposite to the end of the rotating roll. It is configured to give circular arc movement to the roll.

[Effect]

The meandering of the strip is adjusted by moving a rotary roll in an arc that rotates in synchronization with the traveling speed of the strip.

〔Example〕

1 to 3 show an embodiment of the present invention. In the figure, reference numeral 1 denotes a strip of film, paper, cloth, etc., which is transported by appropriate means, and 2 denotes a rotating roll for meandering adjustment, which is disposed perpendicular to the travel path of the strip 1. Support shafts 3, 3' are protruded from both end surfaces of the rotating roll 2, and
A spline shaft 4 is integrally provided on the end surface of the support shaft 3 in a protruding manner. 5, 5' are the spindles 3 of the rotating roll 2,
The bearing bodies 6, 6' that rotatably support the base plate 6 have two guide grooves 7, 7 formed on their lower surfaces, respectively.
The bearing bodies 5, 5' are fixedly attached to the upper surfaces of the pedestals 6, 6'. 8,
Reference numeral 8' denotes a support stand that supports the above-mentioned pedestals 6 and 6', and two-shaped guide rails 9 and 9 are provided on the upper surfaces of the support stands 8 and 8', respectively, so as to be diagonal to the center line of the rotating roll 2. It is permanently installed. Then, the guide grooves 7 of the pedestals 6, 6' are connected to the guide rails 9, 9 of the support pedestals 8, 8'.
7 is slidably fitted to support the pedestals 6, 6' so as to be movable in the width direction. 10 is rotating roll 2
The mounting frame 10 is supported below, and the supports 8, 8' are fixed to the upper surface of both ends of the mounting frame 10. Reference numeral 11 denotes a hydraulic cylinder mounted horizontally on the support base 8', and the tip of the rod 11a of this hydraulic cylinder 11 is fixed to the base 6'. Then, by the protruding and retracting movement of the rod 11a of the hydraulic cylinder 11, the pedestals 6, 6'
slides along the guide rails 9, 9 of the support bases 8, 8', thereby the bearing bodies 5, 9 on the bases 6, 6'
The rotary roll 2 rotatably supported via 5' moves in an arc in the width direction. Reference numeral 12 denotes a drive mechanism that rotates the rotary roll 2 in synchronization with the traveling speed of the strip 1. In the drive mechanism 12,
13 is a mounting base fixed to the upper surface of the edge portion of the mounting frame 10, 14, 14 is a bearing body first installed on the upper surface of the mounting base 13, and 15 is a one-side support shaft portion 15a.
and a cylindrical body part 15b on the other side, the support shaft part 15a is rotatably supported by bearing bodies 14, 14, and the spline of the rotating roll 2 is attached to the cylindrical body part 15b. The shaft 4 is slidably spline fitted. The drive shaft 15 is equipped with a constant velocity joint as shown in FIGS. 6a, b, and c, and the shaft portion 15a and the cylindrical body portion 15b are bendably connected via a connecting shaft portion 15c. be. 16 is a drive pulley pivotally supported on the shaft end of the support shaft portion 15a of the drive shaft 15; 17 is a DC motor having a pulley 18 at one end; 19 is the drive pulley 16;
This is a belt wrapped around the pulley 18 of the DC motor 17. The DC motor 17 is controlled so that the rotary roll 2 rotates in synchronization with the running speed of the belt-like object 1, and its driving force is applied to the belt 1.
9 and the drive shaft 15 to the rotating roll 2. Reference numeral 20 denotes a side edge detection element for detecting the position of the edge portion of the strip 1, and an appropriate type such as an air type, phototube type, or limit switch type may be used as this element. Then, the side edge detection element 20 detects the displacement of the edge portion of the strip 1, and the detection signal is used to cause the hydraulic cylinder 11 to
is activated to move the rotary roll 2 in an arc in the width direction.

The meandering of the strip 1 is adjusted in the following manner. The rotational force of the DC motor 17 is transmitted to the drive shaft 15 via the belt 19. The drive shaft 15
The cylindrical body portion 15b is connected to the spline shaft 4 of the rotating roll 2.
Since the drive shaft 15 is spline-coupled, the rotational force of the drive shaft 15 is supported by the bearing bodies 5, 5' and
As shown in the figure, the signal is transmitted to the rotating roll 2 held at the neutral position, and the rotating roll 2 is rotated in a predetermined direction. At this time, the rotating roll 2 is controlled by the DC motor 17 so as to rotate in synchronization with the traveling speed of the strip-like material 1. On the other hand, the strip 1 wrapped around the rotating roll 2 is transported by appropriate means. During this conveyance, the strip 1 snakes, and when the displacement of its edge portion is detected by the side edge detection element 20, the rod 11a of the hydraulic cylinder 11 moves to protrude and retract in response to the detection signal. By this protruding and retracting movement of the rod 11a, the pedestals 6, 6' are moved to the guide rails 9, 9 of the support pedestals 8, 8'.
The bearing body 5 on the pedestal 6, 6' slides along the
The rotating roll 2 supported by 5' moves in an arc in the width direction. That is, when the strip 1 shifts to the left, the rotating roll 2 moves toward the cylindrical portion 1 of the drive shaft 15.
5b and the spline shaft 4 are spline-fitted, so that it moves in an arc to the right while rotating as shown in FIG. 4, and when the strip 1 shifts to the right, it moves as shown in FIG. The rotating roll 2 moves in an arc to the left while rotating, thereby correcting the meandering of the strip 1. At this time, when the rotary roll 2 is in the neutral position, the drive shaft 15 is in the state shown in FIG. 3a, and when the rotary roll 2 moves to the right and left, the drive shaft 15 is in the state shown in FIG. Bend as shown in c. The rotating roll 2 is driven by a DC motor 1.
7 to rotate in synchronization with the running speed of the strip 1, the strip 1 is transported in close contact with the outer circumferential surface 2a of the rotating roll 2, and does not slip on the outer circumferential surface 2a. Never. Therefore, the meandering of the strip 1 can be quickly and reliably corrected.

[Effect of idea]

In the present invention, the rotating roll is rotated by a drive mechanism in synchronization with the running speed of the strip, so that the strip does not slip on the surface of the rotating roll when running under low tension or at high speed. In particular, the meandering of the strip is detected by the side edge detection element, and the meandering is quickly and reliably adjusted by moving the rotary roll in an arc, thereby preventing damage to the strip. In addition, the rotating roll according to the present invention has a simple structure and is easy to manufacture, resulting in a significant reduction in cost.

[Brief explanation of the drawing]

FIG. 1 is a front view of the meandering adjustment device according to the present invention;
Fig. 2 is a plan view, Fig. 3 is a right side view, Fig. 4 is a plan view of the device of the present invention showing a state in which the rotating roll is moved to the right, and Fig. 5 is a state in which the rotating roll is moved in the left direction. A plan view of the device according to the present invention, FIG. 6a, b,
c is a schematic explanatory diagram showing the bent state of the drive shaft during movement of the rotating roll. 1...Band-shaped object, 2...Rotating roll, 3a, 3b
... Support shaft, 5a, 5b ... Bearing body, 12 ... Drive mechanism, 20 ... Side edge detection element.

Claims (1)

[Scope of claim for utility model registration] Installed perpendicular to the running route of the strip,
and a rotating roll for meandering adjustment having spindles at both ends, and a drive mechanism for rotationally driving the rotating roll in synchronization with the traveling speed of the strip, wherein the supporting shafts at both ends of the rotating roll for meandering adjustment are It is supported by bearing bodies that are rotatable and movable in the width direction of the roll, and one of the bearing bodies supports a support shaft that is spline-coupled with the drive shaft of the drive mechanism, and the other bearing body supports the rotating roll end. What is claimed is: 1. A meandering adjustment device for a strip-shaped article, characterized in that it is driven by a detection signal from a side edge detection element of the strip-shaped article disposed opposite to the strip-shaped article, and is configured to give an arcuate movement to a rotating roll.