JPH0444518Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a presser roller mounting device for attaching the spindle of the presser roller to an arm.

Structure of the Prior Art and its Problems For example, a slitter that shreds a continuous web such as paper into a plurality of strips and winds them around a number of take-up rolls is generally used. FIG. 4 shows a conventional slitter. This slitter has a large number of cutting blades 1, and the continuous web W is unwound from an unwinding roll 2, guided to the cutting blades 1, and shredded into a plurality of strips. Furthermore, this slitter is attached to the upper take-up roll 3.
H and a lower winding roll 3L. Then, the shredded continuous web W is sequentially and alternately sorted, guided upwardly and downwardly, and wound up on take-up rolls 3H and 3L.

Furthermore, this slitter is attached to the upper presser roller 4H.
and a lower pressing roller 4L. As shown in FIG. 5, the presser rollers 4H and 4L are supported by a support shaft 5 and a bearing 6, are rotatably guided, and are arranged between a pair of arms 7. The support shafts 5 of the presser rollers 4H and 4L are attached to and fixed to the arm 7. Therefore, the arm 7 can be swung around its fulcrum 8, and the presser rollers 4H, 4L can be brought into contact with and pressed against the take-up rolls 3H, 3L. As for the upper presser roller 4H, its own weight pushes down the presser roller 4H and the arm 7, and presses the presser roller 4H against the take-up roll 3H. Regarding the lower presser roller 4L, the presser roller 4L and arm 7 are pulled up by the counterweight 9, and the presser roller 4L is pressed against the take-up roll 3L.

Therefore, the continuous web W is wound on the winding roll 3H,
3L, the continuous web W and the take-up rolls 3H, 3L receive contact pressure from the presser rollers 4H, 4L, and the presser rollers 4H, 4L
It rotates around the support shaft 5 in conjunction with H and 3L.
Therefore, the continuous web W can be tightly wound. Furthermore, the continuous web W is
When the winding diameters of the take-up rolls 3H and 3L increase, the presser roller 4
H, 4L and arm 7 swing around their fulcrum 8. With these, the winding rolls 3H, 3L
The increase in the winding diameter is absorbed.

By the way, in order to accurately wind up the continuous web W in this type of slitter, press rollers 4H and 4L having a width corresponding to the shredded continuous web W are used, and the continuous web W and the winding roll 3 are
It is necessary to make contact over the entire width of H and 3L. On the other hand, the cutting width of the continuous web W is required to be changed as appropriate. Therefore, it is necessary to replace the presser rollers 4H, 4L with ones of different width each time.

However, in the past, there were problems associated with replacing the presser rollers 4H and 4L. Up to now, the support shafts 5 of the presser rollers 4H and 4L have been fitted into the through holes of the arms 7. Then, the pin 10 was pushed into the pin hole of the support shaft 5, and the support shaft 5 of the presser rollers 4H, 4L was attached by the pin 10, and the support shaft 5 and the arm 7 were fixed. To remove the support shaft 5 from the arm 7 during replacement, it is necessary to pull out the pin 10 from the pin hole of the support shaft 5. pin 10
is close to arm 7, and it is not easy to extract it. Furthermore, it is necessary to move the arm 7 in the axial direction of the support shaft 5 and extract the support shaft 5 from the through hole of the arm 7. Thereafter, press rollers 4H and 4L of different widths are arranged between the arms 7, the arms 7 are moved again, and the support shafts 5 are fitted into the through holes of the arms 7. The pin 10 must be pushed into the pin hole of the support shaft 5, which is extremely troublesome, and an improvement has been desired.

Purpose of the invention Therefore, the present invention has been made for the purpose of solving the above-mentioned conventional problems and making it easier to attach and remove the presser roller.

Structure of the invention This invention is a device in which a presser roller of a take-up roll is arranged between a pair of arms, and a spindle of the presser roller is attached to the arm. An open groove communicating with the open groove is formed, the through hole has an inner diameter larger than the open groove, and the support shaft is inserted into the through hole from the open groove. moreover,
A compression spring is provided at the tip of the support shaft, a cylindrical knob is provided between the arm and the compression spring, and the cylindrical knob is fitted onto the support shaft. The cylindrical knob is elastically biased by a compression spring, and a portion of the cylindrical knob is loosely fitted into the through hole.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of this invention will be described. FIG. 1 shows an embodiment of this invention. This device is for attaching the presser rollers 4H and 4L shown in FIGS. 4 and 5. Presser rollers 4H and 4L are the support shaft 5
It is supported by a bearing 6, rotatably guided, and disposed between a pair of arms 7, as in FIGS. 4 and 5.

As shown in FIGS. 2 and 3, the arm 7 has a through hole 11 and an opening groove 12. As shown in FIGS. Opening groove 12
communicates with the through hole 11, and the through hole 11 has a larger inner diameter than the opening groove 12. And presser roller 4H,
A 4L support shaft 5 is inserted into the through hole 11 from the opening groove 12. The support shaft 5 has an outer diameter corresponding to the opening groove 12,
or smaller outer diameter. Therefore, it is easy to pass this through the opening groove 12 and insert it into the through hole 11.

Further, a compression spring 13 is provided at the tip of the support shaft 5, and a cylindrical knob 14 is provided between the arm 7 and the compression spring 13.
is provided, and the cylindrical knob 14 is fitted onto the support shaft 5. The compression spring 13 engages a stop ring 15 of the support shaft 5 and is accommodated in an annular groove 16 of the cylindrical knob 14. The cylindrical knob 4 is elastically biased by the compression spring 13, and a portion of the cylindrical knob 14 is loosely fitted into the through hole 11. In this embodiment, the cylindrical knob 14 is provided with an annular projection 17, and the annular projection 17 is fitted into the through hole 11 with a clearance. Therefore, the support shafts 5 of the presser rollers 4H, 4L are attached by the compression springs 13 and the cylindrical knobs 14, and the support shafts 5 and the arms 7 are fixed. The annular protrusion 17 has an outer diameter corresponding to that of the through hole 11 and has a larger outer diameter than the opening groove 12. Therefore, even if an external force is applied to the support shaft 5, the annular protrusion 17 will close the through hole 11 and the opening groove 1.
There is no risk of being taken out of 2.

In this installation, when replacing the presser rollers 4H and 4L, in order to remove the support shaft 5 from the arm 7, move the cylindrical knob 14 along the support shaft 5, move it toward the stop ring 15, and then The protrusion 17 is pulled out from the through hole 11. Then, while holding the cylindrical knob 14 with your hand,
can be pulled out from the through hole 11 and opening groove 12. As a result, the support shafts 5 of the presser rollers 4H and 4L
can be removed. There is no need to move the arm 7 in the axial direction of the support shaft 5.

On the other hand, in order to attach the support shafts 5 of the presser rollers 4H and 4L to the arm 7, the cylindrical knob 14 is attached to the support shaft 5.
, and move it toward the stop ring 15. Then, while holding the cylindrical knob 14 by hand, the support shaft 5 is inserted into the through hole 11 through the opening groove 12. Thereafter, the cylindrical knob 14 of the support shaft 5 is released, and the annular projection 17 is fit into the through hole 11 with a clearance. By this, the presser rollers 4H, 4L
The support shaft 5 can be attached, and the support shaft 5 and the arm 7 can be fixed. The arm 7 is attached to the support shaft 5
There is no need to move it in the axial direction.

Therefore, when changing the shredding width of the continuous web W, the presser rollers 4H and 4L can be easily replaced. Unlike the conventional example, the pin 1 of the support shaft 5
There is no need to remove 0. There is no need to move the arm 7 in the axial direction of the support shaft 5, and the work is easy.

Effects of the invention As explained above, with this invention, the support shaft 5 can be attached to the arm 7 by simply operating the cylindrical knob 14 of the support shaft 5 and moving it along the support shaft 5. It can be removed from arm 7. The work is easy and the intended purpose can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing an embodiment of this invention, FIG. 2 is an enlarged cross-sectional view showing the relationship between the presser roller and the arm in FIG. 1, and FIG. 3 is a cross-sectional view of the device shown in FIG. 2.
FIG. 4 is a side view showing a conventional slitter, and FIG. 5 is a longitudinal sectional view showing the relationship between the presser roller and the arm in FIG. 4H, 4L...Press roller, 5...Spindle, 7...
...Arm, 11...Through hole, 12...Opening groove, 13
... Compression spring, 14 ... Cylindrical knob, 17 ... Annular projection.

Claims (1)

[Scope of utility model registration request] A presser roller of a take-up roll is arranged between a pair of arms, a support shaft of the presser roller is attached to the arm, and the arm is swung around the support to bring the presser roller into contact with the take-up roll. In the device, a through hole for accommodating the support shaft and an opening groove communicating with the through hole are formed in the arm, the through hole has an inner diameter larger than the opening groove, and the support shaft is inserted into the opening. At the same time, a compression spring is provided at the tip of the support shaft, a cylindrical knob is provided between the arm and the compression spring, the cylindrical knob is fitted to the support shaft, and the compression spring is inserted into the through hole through the groove. A presser roller mounting device characterized in that the cylindrical knob is elastically biased by a spring, and a portion of the cylindrical knob is fitted into the through hole with a clearance.