JPH0645355Y2 - Connection fixing mechanism - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a shaft cutting component such as a rotary blade in a sheet cutting device for cutting a soft material sheet or the like into small pieces. The present invention relates to a rotary blade connecting / fixing mechanism in a rotary shaft-connecting rotary blade that is connected to a shaft by appropriately shifting the phase of a specific portion position by a predetermined dimension.

[Conventional technology]

As a cutting device for cutting soft material sheets into small pieces, a two-step cutting method as shown in FIG. 6 is well known. FIG. 6F is a front view of the cutting device, and FIG. 6G is a side view of a cross section taken along the line XX. That is, in the first cutting portion P, the soft material sheet 10 is slit into a udon shape by a large number of sets of slitters 8 and 8 which are set so as to correspond to the left and right or a pair of upper and lower shafts 7, 7, respectively. To be done. Next, a large number of soft materials slit in a udon shape at the first cutting portion P consist of a cylindrical receiving roll 9 on the one hand and a rotary blade 1 having the blade portion 1a on the outer peripheral surface on the other hand. It is cut into small pieces by the second cutting portion Q that brings them into contact with each other and pushes them off. The rotary blade body 1 of the second cutting portion Q has a phase of the blade portions 1a of the adjacent rotary blade bodies 1, 1 for each predetermined dimension in order to reduce the pressing load on the cylindrical receiving roll 9 during cutting. It is necessary to shift and incorporate it into the rotary blade shaft 3. In the conventional configuration in which the phase of the blade portion 1a of the rotary blade body 1 is shifted by a predetermined dimension and incorporated into the rotary blade shaft 3, as shown in FIG. 7, a key groove 11 is provided in the inner diameter of the rotary blade body 1, The center line BB of the key groove 11 for each rotary blade is the predetermined center line of the rotary blade 1.
After processing so as to deviate from AA by a predetermined angle of θ degrees, the rotary blade body 1 is sequentially mounted on the mounting shaft portion of the rotary blade shaft 3 to which the key is attached, and then the end side surface is a bearing nut. It is fastened to the rotary blade shaft 3 by fastening means such as.

Further, as another configuration, a rotation preventing means such as a key groove is not provided in the inner diameter of the rotary blade body 1, and the blade portion of the rotary blade body 1 is used to mount the rotary blade body 1 on the rotary blade shaft 3. The shafts of 1a are sequentially mounted so that the phases of them are shifted by a predetermined dimension, and the side surfaces of the ends are strongly sandwiched by a tightening means such as a bearing nut.

[Problems to be solved by the device]

However, in the first configuration of the conventional example described above, when the key groove is formed in the inner diameter of the rotary blade, the key is formed by shifting the center line by a predetermined angle with respect to the predetermined center line of the rotary blade. Since it is necessary to process the groove, the work of indexing the key groove position is troublesome and the key groove processing becomes complicated. Further, in the second configuration of the above-mentioned conventional example, even if the rotary blades mounted on the shaft are strongly sandwiched by tightening means such as bearing nuts, the rotary blades adjacent to each other, and the rotary blades. Since there is no detent between the rotary blade and the rotary blade shaft, slippage occurs between adjacent rotary blade bodies or between the rotary blade body and the rotary blade shaft due to long-term operation, and adjacent rotary blade bodies There was a defect that the phase of the blade parts of the above was shifted from a predetermined size, and the rotary blade body was idle. Further, when sequentially incorporating the rotary blade body into the rotary blade shaft, there is no standard for shifting the phase of the blade portion of the rotary blade by a predetermined dimension to mount the shaft, and the phase shift amount varies. There was a drawback.

The present invention has been made in view of the above circumstances, and has been improved so that the rotary blade shaft can be mounted on the rotary blade shaft by appropriately shifting the phase of the blade portion of the rotary blade body by a predetermined dimension with a simple mechanism. It is an object of the present invention to provide a connecting and fixing mechanism in which the phases of rotary blades are shifted.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a rotary blade body having a shaft center at the center, blade portions on the outer peripheral surface, and left and right side surfaces orthogonal to the shaft center, and a rotary blade body thereof. A mounting shaft that can be mounted on the shaft, a flange that is provided near one end of the mounting shaft and serves as a stopper, and a rotary blade that is mounted near the other end are fastened and fixed. A rotary blade shaft composed of a tightening means, and a plurality of the rotary blade bodies are mounted on the rotary blade shaft, and the rotary blade shaft is clamped and fixed by a stopper flange portion provided on the rotary blade shaft and the tightening means. In the rotary shaft of the shaft connecting type, the left and right side surfaces of the rotary blade body are provided with pin holes at the same position in relation to the blade portion and the shaft center, and two fittings are provided. Two-axis eccentricity with a shape that integrates the dowel pins back-to-back by eccentricizing each axis A pin is prepared in advance, and one fitting pin of the biaxial eccentric pin is fitted into the pin hole of one adjacent rotary blade body, and the other fitting pin eccentric by a predetermined dimension is inserted into the other rotary blade. The body is characterized by shifting the phase by a predetermined dimension, fitting the body into the pin hole, and repeating the sequence in sequence so that the phase of the blade portion is appropriately shifted by a predetermined dimension to connect the body. In addition to the above configuration, the flange portion of the rotary blade shaft is provided with a similar pin hole at a position corresponding to the pin hole formed in the rotary blade body, and the flange portion is provided with the pin hole. In order to connect the rotary blade shaft and the rotary blade body to the pin hole of the adjacent rotary blade body and the pin hole provided in the flange portion thereof by the biaxial eccentric pin or the separately provided single shaft pin. It is characterized by having done.

[Action]

With the above-described configuration, the biaxial eccentric pins are fitted into the respective pin holes of the adjacent rotary blades so that the rotary blades adjacent to each other by a size determined by the amount of eccentricity of the biaxial eccentric pins. Since the phases of the blade parts can be shifted, for example, when it is desired to minimize the deviation between the blade parts of adjacent rotary blade bodies, the blade part of the rotary blade body can be made to have a small eccentricity by the biaxial eccentric pin. The phase of can be accurately shifted in minute increments. Further, the same two-axis center pin as described above, or a separately provided single-axis pin or the like is fitted and inserted into each pin hole of the flange portion of the rotary blade shaft and the first rotary blade body adjacent to the flange portion. As a result, the rotary blade body and the rotary blade shaft connected to each other are more reliably connected.

〔Example〕

Next, an embodiment of the present invention will be described with reference to FIGS.
It will be described with reference to the drawings. FIG. 1 shows the rotary blade 1,
(A) is a front view showing a part in section, and (B) is a side view thereof. FIG. 2 shows the rotary blade shaft 3. FIG. 3 shows a biaxial eccentric pin 4, (c) is a front view thereof,
(D) is the side view.

In FIG. 1, pin holes 2 and 2 having a predetermined size are provided in parallel with the axis of the rotary blade 1 on both left and right side surfaces orthogonal to the axis of the rotary blade 1. This pin hole 2 is
For example, the predetermined position (for example, the cutting edge) of the blade 1a and the rotary blade 1
It is provided at the intersection of a centerline AA passing through the axis of the and a radius circle of a predetermined dimension from the axis. In FIG. 2, a rotary blade shaft 3 is provided with a mounting shaft portion 3b capable of connecting and mounting a plurality of rotary blade bodies and a stopper provided near one end of the mounting shaft portion 3b. And a tightening means mounting portion 3c provided with a screw for screwing a tightening means such as a bearing nut in the vicinity of the other end. Also, the rotary blade shaft 3
A pin hole 2 is provided on the side surface of the flange portion 3a in parallel with the axis of the rotary blade shaft 3. The pin holes 2 on the side surface of the flange portion 3a correspond to the pin holes 2 provided on the left and right side surfaces of the rotary blade body 1, that is, on the axis of the rotary blade body 1 and the rotary blade body 1. The pin hole 2 is provided at an arbitrary position on the circumference having a radius having the same dimension as the distance from the axis of the pin hole 2. On the other hand, in FIG. 3, the biaxial eccentric pin 4 has a shape in which two fitting pins 4a and 4b are integrated in a back-to-back state, and the axial centers of the fitting pins 4a and 4b are predetermined. Are eccentric in parallel with each other, and the eccentricity is such that when the rotary blade 1 is incorporated into the rotary blade shaft 3, there is a predetermined phase shift between the blade portions 1a, 1a of the rotary blades adjacent to each other. It is said that the amount is commensurate with the amount. And the left and right fitting pins 4a,
4b has an outer diameter dimension that fits into the pin holes 2 provided on both side surfaces of the rotary blade 1, and the length thereof is shorter than the depth of the pin holes 2, respectively. FIG. 4 is a view showing a state in which a predetermined number of rotary blade bodies 1 are sequentially assembled in the rotary blade shaft 3 and then the end side surfaces thereof are tightened by tightening nuts 6, and a partial cross-sectional portion is shown. Is. In FIG. 4, the size of the pin hole 2 provided on the side surface of the flange portion 3a of the rotary blade shaft 3 is the same as the size of the pin hole 2 provided on the rotary blade body 1. First, the rotary blade body 1 is inserted into the pin hole 2 provided on the side surface of the flange portion 3a of the rotary blade shaft 3.
2 side eccentric pin 4 from the side where the
One fitting pin is fitted, and the other fitting pin is shifted in the rotation direction of the rotary blade shaft 3 by the amount of eccentricity.
Next, the first rotating body 1 is mounted on the mounting shaft portion 3b of the rotary blade shaft 3, and one of them is fitted in the pin hole 2 of the flange portion 3b.
The other fitting pin of the shaft eccentric pin 4 and its first rotary blade body 1
The pin hole 2 of the rotary blade shaft 3 and the side surface of the flange portion 3a of the rotary blade shaft 3 and one side surface of the first rotary blade body 1 are adjacent to each other, and next to the other side surface of the first rotary blade body 1. One of the fitting pins of the second biaxial eccentric pin 4 is fitted in the provided pin hole 2, and the other fitting pin is the eccentricity of the rotary pin shaft 3
In the rotational direction of the second rotary blade body 1, and then the second rotary blade body 1 is fitted into one of the pin holes of the second rotary blade body 1 to the second rotary shaft body. The first rotary blade body 1 and its second rotation are axially mounted on the mounting shaft portion 3b of the rotary blade shaft 3 by shifting the phase by a predetermined dimension so as to be fitted to the other fitting pin 2 of the eccentric pin 4. The blade body 1 and the blade body 1 are adjacent to each other. Next, the third, fourth,
The same operation is repeated for the rotary blades 1 ..., and a predetermined number of rotary blades are connected. At this time,
One fitting pin is fitted in the pin hole of the rotary blade 2
The other fitting pin of the shaft eccentric pin 4 may be sequentially shifted by the eccentricity in the same rotation direction of the rotary blade shaft 3, but may be repeated once or several times depending on the purpose. It may be alternated to repeat in one direction and then repeat once or several times in the opposite direction. Then, after mounting a predetermined number of rotary blade bodies, a tightening means mounting portion 3c provided on the rotary blade shaft 3 is screwed with a tightening means such as a bearing nut. The rotary blades, which are connected in a predetermined number by 3a and its tightening means, are clamped and fixed.

As described above, the amount of eccentricity of the biaxial eccentric pin 4 is such that when the rotary blade body 1 is incorporated into the rotary blade shaft 3, the phase shift between the blade portions 1a, 1a of the rotary blade bodies adjacent to each other is a predetermined amount. Therefore, the shaft connecting type rotary blade in which the blade portion 1a is appropriately displaced by a predetermined dimension can be obtained.

Next, in the above embodiment, the flange portion of the rotary blade shaft 3
A biaxial eccentric pin 4 interposed between the rotary blade bodies 3a and the first rotary blade body 1 adjacent to the flange portion 3a in order to shift the phase of the blade portion 1a of the rotary blade body 1 I described the one that uses the same biaxial eccentric pin 4 as above, but the flange part
Since 3a is not directly related to the phase shift of the blade portion 1a of the rotary blade body 1, a uniaxial pin having a predetermined length is separately prepared, and the axial center of the pin hole 2 provided in the flange portion 3a. The axis of the pin hole 2 provided in the first rotary blade body 1 may be aligned, and a uniaxial pin may be interposed. Further, the size of the pin hole 2 provided on the flange portion 3a is the same as that of the pin hole 2 provided on the rotary blade 1.
If the diameter of the left and right fitting pins is set to be smaller, and a stepped uniaxial pin having two different diameters that fits into the pin holes 2 is interposed, the pins that are likely to drop out in the case of through holes are dropped. Helps prevent accidents. Further, regardless of whether the pin hole 2 is provided in the flange portion 3a of the rotary blade shaft 3 or not, the flange portion 3a of the rotary blade shaft 3 and its flange portion 3a
It is not always necessary to interpose a pin for preventing rotation between the first rotary blade body 1 adjacent to the rotary blade body 1, and it can be firmly clamped and fixed by the fastening means on the opposite side of the flange portion 3a of the rotary blade shaft 3. For example, biaxial eccentric pins 4 are provided between the rotary blades.
Because of the interposition, the rotary blade group connected to the rotary blade shaft 3 is extremely unlikely to slip around the mounting shaft portion 3b of the rotary blade shaft 3 and slip. Further, in the present embodiment, as shown in FIG.
Although an example in which the positions of the pin holes 2 provided on both side faces of the pin hole 2 are provided on the center line AA passing through the blade tip of the blade portion 1a has been described, the drilling position of the pin hole 2 is not limited to this position. Without
The predetermined position of the blade portion 1a and the axial center of the rotary blade body 1 may be the same position, and are not limited to the drilling position shown in FIG. Next, FIG. 5 is a view showing another embodiment of the rotary blade body 1, in which the pin holes 2 provided on both sides of the rotary blade body 1 are common through holes.

Although the present invention has been described in the present embodiment as being applied to the connecting and fixing mechanism of the soft sheet cutting device, the present invention is not limited to the soft sheet cutting device.
It is used for rotary blade connecting blades that need to be connected to each other by shifting the phase of the blade portion of the rotating blade body having the blade portion on the outer peripheral surface to a shaft having no turning prevention means such as a key. It can be used and its usage range is wide.

[Effect of device]

As described above in detail, according to the present invention, the phase of the blade portions of the adjacent rotary blades can be simply adjusted by using the pin holes and the biaxial eccentric pins which are machined at the fixed positions on the left and right side surfaces of the rotary blades. Since it is possible to shift the axis by a certain amount, shift the center line by a certain angle to the center line that passes through the blade tip of the rotary blade, as in the conventional key groove. Since the complicated indexing work such as machining is not required, the machining is simplified. In addition, since pin holes are provided at fixed positions on the rotary blade, the rotary blades are compatible with each other, unlike the case of a key groove that shifts the center line by an angle corresponding to the phase shift of the blade. Therefore, maintenance such as rearrangement is easy and economical. Further, a pin hole is also provided in the flange portion of the rotary blade shaft, and the same biaxial eccentric pin is provided in the pin hole of the flange portion and the pin hole of the first rotary blade body adjacent to the flange portion, or separately prepared. In addition, it is possible to secure the connection between the rotary blade body and the rotary blade shaft that are connected by a simple method of fitting a single axis pin etc., so the processing cost is lower than that of the conventional key groove Becomes Further, by preparing biaxial eccentric pins with different eccentric amounts, the phase of the blade portion of the rotary blade can be set arbitrarily and accurately, so the phase of the deviation of the blade portions between the rotary blades can be made small. This is effective when you want to set the size accurately, and the effect is great.

[Brief description of drawings]

FIG. 1 is a rotary blade, (a) is a front view showing a part in cross section, and (b) is a side view thereof. FIG. 2 shows a rotary blade shaft. FIG. 3 is a biaxial eccentric pin, (C) is a front view thereof, and (D) is a side view thereof. FIG. 4 is a view showing a state in which a predetermined number of rotary blade bodies are incorporated in the rotary blade shaft, and is a partial cross-sectional view. FIG. 5 is a view showing another embodiment of the rotary blade body. FIG. 6 is a schematic explanatory view of a soft sheet cutting device, and FIG. 7 is a view showing a conventional rotary blade. 1 ... Rotating blade, 2 ... Pin hole 3 ... Rotating blade shaft, 4 ... 2-axis eccentric pin 5 ... Stop washer, 6 ... Tightening nut 7 ... Axis, 8 ... Slitting machine 9 ... Receiving roll, 10 …… Soft material sheet 11 …… Key groove

Claims (2)

[Scope of utility model registration request] 1. A shaft center is provided in the center, and a blade portion is provided on an outer peripheral surface,
A rotary blade body having left and right side surfaces orthogonal to the axis, a mounting shaft portion on which the rotary blade body can be mounted, and a stopper provided near one end of the mounting shaft portion. The rotary blade shaft comprises a flange portion and a tightening means for tightening and fixing the rotary blade body mounted near the other end, and a plurality of the rotary blade bodies are mounted on the rotary blade shaft. Then, in the rotary shaft of the shaft connecting type, which is sandwiched and fixed by the stopper flange portion provided on the rotary blade shaft and the tightening means, on the left and right side surfaces of the rotary blade body,
A pin hole is formed at the same position in the relationship between the blade portion and the shaft center, and two fitting pins are integrated in a back-to-back state by eccentricizing each shaft center by a predetermined dimension. A shaft eccentric pin is prepared, and one fitting pin of the two shaft eccentric pins is fitted into a pin hole of one adjacent rotary blade body, and the other fitting pin formed by eccentricity by a predetermined dimension is replaced with the other fitting pin of the other. Shaft connection characterized in that the rotary blade body is shifted by a predetermined dimension and fitted into its pin hole, and by sequentially repeating this, the phase of the blade portion is shifted by a predetermined dimension as necessary for connection. A connecting and fixing mechanism that shifts the phase of the mold rotary blade. 2. An axis is provided in the center, and a blade is provided on the outer peripheral surface,
A rotary blade body having left and right side surfaces orthogonal to the axis, a mounting shaft portion on which the rotary blade body can be mounted, and a stopper provided near one end of the mounting shaft portion. A rotary blade shaft composed of a flange portion and a tightening means for tightening and fixing the rotary blade body mounted around the other end in the vicinity of the other end portion, and the rotary blade body comprises a plurality of rotary blade shafts. In the rotary blade of the shaft connecting type, which is mounted and fixed by a stopper flange portion provided on the rotary blade shaft and tightening means, on both left and right side surfaces of the rotary blade body,
A pin hole is bored at the same position in the relationship between the blade portion and the shaft center, and the flange portion of the rotary blade shaft is also provided at the same position as the pin hole bored in the rotary blade body. A biaxial eccentric pin having a shape in which two fitting pins are integrated in a back-to-back state by eccentricizing each of the fitting pins by a predetermined dimension is prepared. One of the fitting pins of the pins is fitted into the pin hole of the adjacent one of the rotary blades, and the other mating pin that is eccentric by a predetermined size is shifted from the other rotary blade by a predetermined size and the pin It is fitted in a hole, and by sequentially repeating this, the blade portion is connected by shifting the phase of the blade portion by a predetermined dimension, and is provided in the pin hole and the flange portion of the rotary blade body adjacent to the flange portion of the rotary blade shaft. Rotate with the rotary blade shaft by fitting the biaxial eccentric pin into the pin hole Connecting and fixing mechanism shifting the phase of the shaft articulating the rotary blade, characterized in that so as to couple the body.