JPS6136814Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a fixing device for a rotating body, especially for forming lines and creases on sheet materials such as cardboard, paperboard, laminated paper, and other paper strips, or for cutting the sheet materials. This invention relates to a device for positionally fixing a rotating body to a rotating shaft.

Conventionally, in order to support a rotating body for the above purpose on a rotating shaft, a ruling roll 4 as a rotating body is divided into two halves 2 and 3, as shown in FIGS.
The half parts 2 and 3 were fixed to the rotating shaft 1 by tightening bolts 5. When fixed, the dimensions are such that there is a very small gap between the divided surfaces of the rotating body 4. FIG. 3 shows the state in which this rotary body 4 is used. Creasing rolls 4 and 4' are attached to a pair of rotary shafts 1 and 1' facing each other as rotary bodies, and corrugated paper is used as a sheet material between them. The sheet 6 is passed in the direction of the arrow, and ruled lines 7 are placed on the corrugated cardboard sheet 6 using the ruled line rolls 4 and 4'.

In the conventional device described above, when changing the position of the rotating body 4 with respect to the rotating shaft, loosening the bolt 5 creates a space between the rotating body 4 and the rotating shaft 1, allowing the rotating body 4 to move, and changing the position. Later, it was necessary to tighten the bolt 5 again to fix it in the new position. Since 4 to 19 rotating bodies 4 are usually attached to the rotating shaft 1, a lot of time is required to fix the positions of the rotating bodies 4.

Therefore, the purpose of this invention is to provide a rotating body fixing device that allows a plurality of rotating bodies to be repositioned with respect to a single rotating shaft in a short time by simple operation and fixed by a uniform pressing force above a certain level. In order to achieve the above-mentioned purpose, an elongated camshaft is provided in a groove extending in the axial direction parallel to the axis of the rotary shaft between each rotary body and one long rotary shaft. The camshaft is provided rotatably about the rotating shaft, an elastic member is interposed between the camshaft and the rotating shaft, and a key member is interposed between the camshaft and the rotating body, and the The rotation of the camshaft compresses the elastic member and presses the key member against the rotating body, thereby fixing the rotating body.

Other objects and advantages of the invention will become more readily apparent from the following detailed description of the embodiments illustrated in the accompanying drawings.

In FIGS. 4 and 5 showing a rotating shaft incorporating a fixing device according to this invention, a relatively long rotating shaft 1 is provided with a relatively deep groove 1a extending parallel to its axis. The rotating shaft 1 has a structure in which it is rotatably supported by a frame 10 of a corrugating machine, a box making machine, etc., to which this invention can be applied, in the same manner as in the conventional art, and is driven and rotated by an arbitrary drive source (not shown). It is becoming. Groove 1a
An elongated camshaft 11 is arranged inside. camshaft 1
Both ends of 1 protrude outside the groove 1a, and the rotating shaft 1
Support plates 12 and 12' are fixed to both end faces of the
It is rotatably supported by. In order to fix the position of the camshaft 11, a flange 11 is attached to one end of the camshaft 11.
c is integrally formed, the other end 11d is threaded, and the camshaft 11 is fixed by tightening a nut 15 fitted to the thread. For rotation of the camshaft 11, it is preferable that the end 11e connected to the other threaded end 11d has a square column shape.
As shown in FIG. 5, the cross section of the camshaft 11 has a uniform shape along the longitudinal direction of a circle cut above the chord 11f, and therefore the dimension of the section 11a is larger than the section 11b. . However, the camshaft 11 is not limited to the above-described shape. Furthermore, an elastic body 13 is arranged below the camshaft 11 in the groove 1a.
The material of the elastic body 13 is preferably a resin having wear resistance and a low coefficient of solid contact friction, such as high-density polyethylene resin, or hard rubber with surface treatment (Teflon coating). Further, a key member 14 is mounted on the camshaft 11 so as to protrude slightly outward from the groove 1a. The key member 14 has a groove 1
It is held between support plates 12 and 12' within a. A rotating body 4 is attached to the rotating shaft 1 configured in this way.
is movably fitted to the camshaft 11 with the key member 14 interposed therebetween. Only one rotating body 4
Although shown in the figure, a required number (usually 4 to 19) of rotating bodies 4 can be attached to the rotating shaft 1.

In normal use, as shown in FIG. 7, the lower end of the large-diameter section 11a of the camshaft 11 compresses the elastic body 13, and the reaction causes the elongated camshaft 11 to deform along the axial direction. , the upper end of the large-diameter portion 11a of the camshaft 11 is the key member 1
4 to the outside in the radial direction, and presses the key groove portion of the rotating body 4, thereby fixing the position of the rotating body 4 with respect to the rotating shaft 1. Now, when changing the position of the rotating body 4, loosen the nut 15 slightly, and then engage the tool 16 with the square column part 11e of the camshaft 11 to rotate the camshaft 11, as shown in FIG. 5, the smaller diameter portion 11b is the key member 14.
When the key member 14 faces the rotating body 4, the force of pressing the rotating body 4 is removed, and the rotating body 4 can be moved to a desired position. After moving the rotating body 4,
Rotate the camshaft 11 again to the position shown in Fig. 7,
Tighten the nut 15 to fix the angular position of the camshaft 11. The elastic body 13 is attached to the camshaft 1 as shown in FIG.
When the key member 1 presses the key member 14 at the portion 11a, the force with which the key member 14 presses against the rotating body 4 has an elasticity that can exert a force greater than a certain level that is sufficient for positioning the rotating body 1 at any position in the axial direction.

FIG. 8 is a sectional view showing another embodiment of this invention, in which a plate-shaped pad 13a made of hard rubber and a spring 13b are used instead of the elastic body 13. The pad 13 may be one long piece or a plurality of short pieces. An appropriate number of springs 13b may be provided in the longitudinal direction of the groove 1a, and may be helical springs, leaf springs, or other types of springs. In use, these pads 13a and springs 13b
The deformation of the camshaft 11 and thereby applying a pressing force of a certain level or more to the rotary body 4 is similar to the case of the above-mentioned embodiment.

As mentioned above, according to this invention, the positions of multiple rotating bodies can be changed simply by rotating one camshaft, so the operation time can be greatly shortened, and Operation is simple. In addition, even if there is a dimensional error or play in the rotating body, rotating shaft, key member, camshaft, etc. in the axial direction due to manufacturing or other reasons, the elastic force of the elastic member will cause the axial direction to change. By deforming the camshaft along the rotation axis, a uniform elastic force above a certain level can be ensured by the elastic member no matter where the rotating body is located along the rotation axis.

Although the invention has been described in terms of two preferred embodiments, various modifications can be made without departing from the spirit and scope of the invention.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a rotating shaft equipped with a conventional rotating body fixing device, Figure 2 is a side view of Figure 1, Figure 3 is a perspective view showing how the rotating body is used, and Figure 4 is this invention. FIG. 5 is a cross-sectional view taken along line A-A in FIG. 4, and FIG. 6 is a cross-sectional view taken along line B-B in FIG. 4. FIG. 7 is a cross-sectional view of the rotary shaft in use, and FIG. 8 is a cross-sectional view of another embodiment of this invention. In the figure, 1... rotating shaft, 4... rotating body, 11...
Cam shaft, 13 or 13a, 13b... elastic member, 14... key member.

Claims (1)

[Scope of utility model registration request] In order to fix each of the plurality of rotating bodies in the axial direction around a single long rotating shaft, a shaft is provided between each rotating body and the single rotating shaft parallel to the axis of the rotating shaft. an elongated camshaft is provided in a groove extending in the axial direction so as to be rotatable about the rotational shaft, an elastic member is interposed between the camshaft and the rotational shaft, and the camshaft and the rotational body A rotation characterized in that a key member is interposed between the camshaft and the camshaft, and the rotation of the camshaft compresses the elastic member and presses the key member against the rotating body to fix the rotating body. Body immobilization device.