JP3634306B2 - Support arm fixing device for slitter slit blade - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a slitter for slitting a web material such as paper or plastic film, and more particularly to a support arm fixing device for the slit blade.
[0002]
[Prior art and its problems]
In a slitter that slits a web material such as paper or plastic film, a slit blade is generally supported by a support arm, and the web material is slit by the slit blade. In many cases, the support arm is combined with the holder, the bolt is screwed onto the holder, and the support arm is fixed by the bolt. In this case, when the web material is guided to the slit position, the bolt can be once loosened, the support arm can be swung around the bolt and retracted from the slit position, and the web material can be easily guided. Similarly, when the slit blade is replaced with a new one, the slit arm can be easily replaced by swinging the support arm around the bolt and retracting it from the slit position. Thereafter, the support arm can be swung to the original angular position, tightened and fixed with a bolt, and the web material can be slit with a slit blade.
[0003]
However, in the case of this device, when the support arm is swung to the original angular position, and is tightened and fixed with a bolt, the support arm may not be positioned accurately, and can be tightened and fixed as it is. The positioning accuracy is low and the reproducibility is poor. Each time the support arm swings, the support arm must be tightened and fixed with a bolt, which is troublesome.
[0004]
OBJECT OF THE INVENTION
Accordingly, the present invention has been made for the purpose of fundamentally improving the support arm fixing device for the slit blade of the slitter and accurately positioning the support arm.
[0005]
[Structure of the invention]
And according to this invention, a slit blade is supported by the support arm, and this is combined with a holder. The holder has a pin, and the support arm is attached to the pin and can swing around the pin. Further, around the pin, internal teeth are formed on the holder, external teeth are formed on the support arm, and the external teeth are opposed to the internal teeth. Accordingly, the external teeth can be engaged with the internal teeth, and the support arm can be fixed in this state.
[0006]
Furthermore, according to the present invention, the pin has a radial hole, is attached to the holder, and is movable in the axial direction. Further, an eccentric cam is received in the radial hole. The eccentric cam is formed on a shaft, the shaft has a handle, is attached to a holder and is rotatable. Therefore, the eccentric cam is rotated by the handle, the pin is moved by the eccentric cam, and thereby the external teeth and the internal teeth can be engaged with each other, and the pin and the support arm can be fixed and locked by the eccentric cam.
[0007]
Around the pin, on the contrary, external teeth are formed on the holder, internal teeth are formed on the support arm, and are opposed to the external teeth. Then, the inner teeth are engaged with the outer teeth, and the support arm may be fixed in that state.
[0008]
The eccentric cam may be rotated by the handle, the pin may be moved by the eccentric cam, and thereby the inner teeth and the outer teeth may be engaged.
[0009]
[Explanation of Examples]
Examples of the present invention will be described below.
[0010]
FIG. 1 shows an apparatus according to the present invention. This apparatus is a support arm fixing device for a slit blade 1 of a slitter. The slit blade 1 is supported by a support arm 2, and the slit blade 1 is for slitting a web material 3 such as paper or plastic film. Form a rectangle.
[0011]
Further, the support arm 2 is combined with the holder 4, and as shown in FIG. 2, the holder 4 has a pin 5, and the support arm 2 is attached to the pin 5 and can swing around the pin 5. . Further, an inner tooth 6 is formed on the ring-shaped member 7 around the pin 5, and the holder 4 and the ring-shaped member 7 are connected and fixed by a bolt 8, and the outer tooth 9 is connected to the ring 5 around the pin 5. The support arm 2 and the ring-shaped member 10 are connected and fixed by a bolt 11. Accordingly, the inner teeth 6 are formed on the holder 4 and the outer teeth 9 are formed on the support arm 2 around the pin 5, and the outer teeth 9 oppose the inner teeth 6. Regarding the relationship between the support arm 2 and the pin 5, the pin 5 has a head 12 fixed by a bolt 31. When the support arm 2 and the ring-shaped member 10 are connected by the bolt 11, the head 12 is connected to the support arm 2. Arranged between the ring-shaped members 10. Thus, the support arm 2 is attached. The support arm 2 is held by the bolt 11, the ring-shaped member 10 and the head 12, and does not come out of the pin 5.
[0012]
Therefore, in the case of this device, the support arm 2 can be moved toward the holder 4 in the axial direction of the pin 5, and the external teeth 9 can be engaged with the internal teeth 6, and the support arm 2 can be fixed in this state. Can do. In this embodiment, as shown in FIG. 3, the external teeth 9 and the internal teeth 6 are formed with a taper 13, so that the external teeth 9 and the internal teeth 6 can be smoothly engaged.
[0013]
Furthermore, in this device, the pin 5 has a radial hole 14 and is attached to the holder 4 and is movable in the axial direction. Further, as shown in FIG. 4, the eccentric cam 15 is accommodated in the radial hole 14. The eccentric cam 15 is formed on a shaft 16, which has a handle 17, extends perpendicular to the pin 5, is attached to the holder 4, and is rotatable. Regarding the position of the handle 17, the shaft 16 passes through the holder 4 and protrudes to the outside, and the handle 17 is attached to the protruding end of the shaft 16. Therefore, the shaft 16 and the eccentric cam 15 can be rotated by the handle 17. Further, when the eccentric cam 15 is rotated clockwise in FIG. 4, the eccentric cam 15 is pressed against the peripheral wall of the radial hole 14 as shown in FIG. 5, and the pin 5 is pushed by the eccentric cam 15 in the axial direction of the pin 5. As a result, the ring-shaped member 10 and the support arm 2 are pulled by the head 12, and the support arm 2 moves toward the holder 4. As a result, the external teeth 9 and the internal teeth 6 can be engaged. Thereafter, as the pin 5 moves, the support arm 2 is pressed against the holder 4 in the axial direction of the pin 5, and the eccentric cam 15 is restrained in the radial hole 14, and is fixed and locked at the position shown in FIG. . Therefore, the pin 5 and the support arm 2 can be fixed and locked by the eccentric cam 15.
[0014]
In this apparatus, the slit blades 1 are respectively supported by the plurality of support arms 2. Further, in the plurality of holders 4, the support arms 2 are combined, and the holders 4 are arranged at a distance from each other, and are attached and fixed to a common support shaft 18. Regarding the relationship between the slit blade 1 and the support arm 2, the slit blade 1 is held by a holder 19, and the holder 19 is of a cartridge type, and is fitted into the receiving groove of the support arm 2 and attached. Further, for example, the web material 3 is fed along the outer peripheral surface of the roller 20, and in each support arm 2, the support arm 2 and the slit blade 1 are arranged in parallel to the feed direction X of the web material 3. Therefore, after fixing and locking the support arm 2, the slit blade 1 can be brought into contact with the web material 3, and the web material 3 can be slit by the slit blade 1.
[0015]
Therefore, in this apparatus, when the web material 3 is guided to the slit position, the eccentric cam 15 is rotated by the handle 17 and rotated counterclockwise in FIG. Is released from the constrained state, thereby releasing its locking action. Therefore, in the axial direction of the pin 5, the support arm 2 can be moved integrally with the ring-shaped member 10 and the pin 5, and the external teeth 9 can be detached from the internal teeth 6, and then the support around the pin 5 The arm 2 can be swung clockwise in FIG. 1, lifted, and retracted from the slit position. Therefore, the web material 3 can be easily guided thereafter. Further, when the slit blade 1 is replaced with a new one, similarly, the support arm 2 can be swung around the pin 5 and retracted from the slit position, so that the slit blade 1 can be easily replaced. Thereafter, the support arm 2 is swung to the original angular position, and when the eccentric cam 15 is rotated by the handle 17, the pin 5 is moved by the eccentric cam 15, thereby engaging the outer teeth 9 and the inner teeth 6. The support arm 2 can be fixed and locked by the eccentric cam 15. Therefore, the web material 3 can be slit by the slit blade 1.
[0016]
Therefore, in the case of this device, when the support arm 2 swings to the original angular position and the external teeth 9 are engaged with the internal teeth 6, the support arms 2 are positioned by the external teeth 9 and the internal teeth 6. In this state, the support arm 2 is fixed. Therefore, the support arm 2 can be accurately positioned, its positioning accuracy is high, and reproducibility is good. In addition, when the eccentric cam 15 is rotated by the handle 17, the outer teeth 9 and the inner teeth 6 can be engaged thereby, and the support arm 2 can be fixed and locked by the eccentric cam 15. Unlike the prior art, it is not necessary to fasten and fix the support arm 2 with bolts, and the operation is easy.
[0017]
When the support arm 2 is fixed, the angular position of the support arm 2 can be changed stepwise, the external teeth 9 can be engaged with the internal teeth 6 at the angular position, and the support arm 2 can be fixed in that state. Therefore, the angle between the web material 3 and the slit blade 1 can be arbitrarily adjusted, and it can be changed depending on the type of the web material 3. Reproducibility can also be obtained by the external teeth 9 and the internal teeth 6.
[0018]
In this embodiment, the case where the inner teeth 6 are formed on the holder 4 and the outer teeth 9 are formed on the support arm 2 around the pin 5 has been described, but this is not necessarily required. As shown in FIG. 6, around the pin 5, the external teeth 21 are formed on the holder 4, and the internal teeth 22 are formed on the support arm 2, and are opposed to the external teeth 21. Then, the inner teeth 22 may be engaged with the outer teeth 21 and the support arm 2 may be fixed in that state. The pin 5 is moved by the eccentric cam 15, whereby the inner teeth 22 and the outer teeth 21 can be engaged.
[0019]
Further, as shown in FIG. 7, a round blade may be used as the slit blade 23 instead of a rectangular blade, and it may be supported by the support arm 2 and the web material 3 may be slit by the round blade. When the bolt 31 is removed from the pin 5 in the support arm 2 that supports the slit blades 1 and 23, the support arm 2 can be removed integrally with the head 12 and the ring-shaped member 10, and replacement thereof is easy.
[0020]
【The invention's effect】
As described above, according to the present invention, the support arm 2 can be positioned by the external teeth 9 and the internal teeth 6 or the internal teeth 22 and the external teeth 21, and the support arm 2 can be fixed in this state. Therefore, the support arm 2 can be accurately positioned, the positioning accuracy is high, the reproducibility is good, and the intended purpose can be achieved.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of the present invention.
2 is a cross-sectional view of the apparatus of FIG.
FIG. 3 is an enlarged view of the external teeth and internal teeth of FIG. 1;
4 is an explanatory diagram showing a relationship between a pin and an eccentric cam in FIG. 2; FIG.
5 is an explanatory view showing a state in which the eccentric cam of FIG. 4 is rotated. FIG.
FIG. 6 is a cross-sectional view showing another embodiment.
FIG. 7 is a side view showing another embodiment.
[Explanation of symbols]
1, 23 Slit blade 2 Support arm 3 Web material 4 Holder 5 Pins 6, 22 Internal teeth 9, 21 External teeth 14 Radial hole 15 Eccentric cam 16 Shaft 17 Handle

Claims (2)

A holder having a pin;
A support arm that supports a slit blade, is combined with the holder, is attached to the pin, and can swing around the pin;
Around the pin, internal teeth formed on the holder;
Around the pin, it is formed on the support arm, and consists of external teeth facing the internal teeth,
The pin has a radial hole, is attached to the holder and is movable in the axial direction, an eccentric cam is received in the radial hole, the eccentric cam is formed in the shaft, and the shaft has a handle. The eccentric cam is attached to the holder and is rotatable, the eccentric cam is rotated by the handle, the pin is moved by the eccentric cam, and thereby the outer teeth and the inner teeth are engaged, and the eccentric cam A support arm fixing device for a slit blade of a slitter, wherein the pin and the support arm are fixed and locked. A holder having a pin;
A support arm that supports a slit blade, is combined with the holder, is attached to the pin, and can swing around the pin;
Around the pin, external teeth formed on the holder;
Around the pin, it is formed on the support arm, and consists of an inner tooth facing the outer tooth,
The pin has a radial hole, is attached to the holder and is movable in the axial direction, an eccentric cam is received in the radial hole, the eccentric cam is formed in the shaft, and the shaft has a handle. The eccentric cam is attached to the holder and is rotatable, the eccentric cam is rotated by the handle, the pin is moved by the eccentric cam, and thereby the inner teeth and the outer teeth are engaged, and the eccentric cam A support arm fixing device for a slit blade of a slitter, wherein the pin and the support arm are fixed and locked.

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