JPH0455001Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pulley device for guiding a strip-shaped object that can guide strip-shaped objects of different widths by rearranging a pair of pulley bodies.

[Prior Art] Conventionally, when guiding strips of different widths, replacement pulleys corresponding to the widths of each strip are prepared, and each time the strip to be guided changes, the pulley is replaced with a predetermined pulley. It was being replaced.

[Problem to be solved by the invention] Therefore, if there are many pulleys installed in the conveying device, it is necessary to prepare many replacement pulleys, which requires a large amount of cost. At the same time, there were various problems such as the storage space and the need for a large number of workers to replace them.

The present invention has focused on this problem, and as a result of intensive studies to solve this problem, it has been made possible to guide strip-like objects of different widths by rearranging the pair of pulley bodies.

[Means for Solving the Problems] That is, the pulley device for guiding a strip-shaped object according to the present invention has a partition in which the narrow guide surface and the wide guide surface are protruded so as to have a step with both guide surfaces. A pair of pulley bodies formed with a flange in between are mounted on the shaft body, and both pulley bodies connect their narrow guide surfaces or the wide guide surfaces to form a strip guide recess. They are characterized in that they are integrally mounted so as to be brought into contact with each other, and are also mounted in a removable manner.

[Example] Hereinafter, an example will be described based on the drawings. In FIGS. 1 and 2, a pair of pulleys are attached to a shaft 1 screwed onto a machine base 10 so as to be rotatable via a bearing 3. Main bodies 2 _-1 and 2 _-2 are attached, and these pulley bodies 2 _-1 and 2 _-2 form a guide surface 2b on one side of the partitioning flange 2a and guide it on the other side. The partitioning flange 2a forms a surface 2c and is protruded so as to have a step with both guide surfaces 2b, 2c, and furthermore, the width of one guide surface 2c is larger than the width of the other guide surface 2b. Dimensions are provided. In addition, both pulley bodies 2 _-1 , 2 _-2
are pressed against each other by the stopper 4, and are integrally attached to each other so as to connect the narrower guide surfaces 2b to form a strip guide recess.

That is, the stopper 4 is swingably attached via a pin 5 to the end of the shaft 1 whose tip extends to the side of one pulley main body 2 _-1 ,
In addition, notches 4a and 4b are formed in this to engage with a sphere 6, but the sphere 6 is always pressed against the stopper 4 by a spring 7. Note that the spring 7 is inserted into a hole 1a bored in the end of the shaft body 1.

Therefore, as shown by the solid line in FIG. 1, when the stopper 4 is swung to the vertical position, the sphere 6 is engaged with the notch 4a, thereby locking one of the pulley bodies 2 _-1 is the other pulley body 2 _-2
Pressed against. Thus, it is possible to connect the narrower guide surfaces 2b of the pair of pulley bodies 2 _-1 and 2 _-2 to form a strip guide recess,
Therefore, the narrower strip can always be supported in the entire surface of the strip in contact with the strip and guided in a good manner.

Above, we have described the mode in which the narrower guide surfaces 2b are connected to each other to form a strip guide recess. Next, we will connect the larger width guide surfaces 2c to form a strip guide recess. This is done when it becomes necessary to guide a wider strip.

That is _, as shown by the chain line in _FIG .
Then remove the pulley bodies 2 _-1 and 2 _-2.
is attached to the shaft body 1 again so that the larger width guide surfaces 2c are connected to each other to form a strip guide recess (see FIG. 2). At this time, when the stopper 4 is swung to the horizontal position, the sphere 6 is engaged with the other notch 4b and locked, and then the pulley body 2 _-
1 and _2-2 are completed, the stopper 4 is swung to the vertical position and locked. Therefore, also in this case, one pulley main body 2 _-1 is pressed against the other pulley main body 2 _-2 to form an integral body.

As described above, according to the present invention, it is possible to guide strips of different widths by rearranging the pair of pulley bodies, and moreover, it is possible to guide strips of different widths by pressing the pair of pulley bodies together. Not only small strips but also wide strips can be always supported and guided in a state of full-surface contact, and therefore the strips can be guided well without being deformed. This effect is particularly noticeable when guiding a thin strip-shaped object.In addition, in the present invention, regarding the manner in which the pair of pulley bodies are attached to the shaft body, there is a possibility that the pair of pulley bodies be attached to the shaft body that cannot rotate. , it may be attached to a rotatable shaft, and in this case as well, it is necessary to attach and detach it to and from the shaft using a screw, key, or the like.

[Effects of the invention] As described above, according to the invention, it is possible to guide strips of different widths by rearranging the pair of pulley bodies, and moreover, it is possible to guide not only narrow strips but also narrow strips. Even large strips can be supported and guided with full surface contact at all times.
Therefore, the strip-like object can be guided well without being deformed, and this effect is particularly noticeable when guiding a thin strip-like object.

In addition, the number of pulleys required for replacement can be reduced, and it can also contribute to solving problems such as the need for a large number of workers to store them and replace them.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a pulley device for guiding a strip-shaped object, and FIG. 2 is a diagram showing a mode in which a pair of pulley bodies are rearranged. 1...Shaft body, 2 _-1 ...Pulley body, 2 _-2 ...Pulley body, 2a...Partition flange, 2b...Small width guide surface, 2c...Large width guide Surface, 4... Stop, 5... Pin, 6... Sphere, 7
……spring.

Claims (1)

[Scope of utility model registration request] A pair of pulley bodies, in which a narrow guide surface and a wide guide surface are formed by sandwiching a protruding partition flange so as to have a step with both guide surfaces, are attached to the shaft body, and both pulley bodies are attached to the shaft body. The main body is attached integrally with the narrow guide surfaces or the wide guide surfaces connected to each other so as to form a strip guide recess, and is detachably attached. A pulley device for guiding a strip-shaped object.