JP2602134Y2 - Ring knife clearance adjustment device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clearance adjusting device for a ring knife such as a trimmer or a slitter knife used for trimming or slitting a steel strip.

[0002]

2. Description of the Related Art When trimming or slitting a steel strip, the axial clearance of a pair of annular knives must be changed depending on the thickness of the steel strip. For this reason, there has been a pressurized knife mounting device that can slide and fix on an arbor shaft.

That is, as shown in FIG. 1, an annular knife N is fixed to one end of a cylindrical main body 1 and an oil pressurizing chamber 2 is provided on an inner peripheral portion of the cylindrical main body. The piston 3 is slidably opposed in the radial direction, and an operation screw 4 for adjusting the position of the piston is screwed to the outer peripheral side of the cylindrical main body 1. Then, while measuring the clearance with respect to the opponent's knife with a clearance gauge, the cylindrical body 1 is moved to the arbor axis A.
When the operation screw is screwed in at the set clearance position by sliding the upper part, the pressure in the pressurizing chamber 2 rises, and the inner peripheral surface of the cylindrical main body 1 slightly swells radially inward, and the arbor shaft A is fixed to A.

[0004]

However, when adjusting the clearance, the cylindrical body including the knife must be slightly moved. However, the force of the operator's fingers or a hammer is applied to overcome the overall weight and the frictional force with the arbor shaft, and the movement is excessively large or small. Was. In addition, poor shear surface of the steel strip due to poor clearance adjustment occurred.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a clearance adjusting apparatus for a circular knife which improves efficiency and quality of trimming and slitting operations.

[0006]

Means for Solving the Problems To solve the above problems, the configuration of the present invention is as follows. That is, in the first configuration, an annular knife is concentrically fixed to one end of the cylindrical main body, and an oil pressurizing chamber is provided on an inner peripheral portion of the cylindrical main body. In a clearance adjusting device for an annular knife in which a piston is slidably opposed and an operating screw for adjusting the position of the piston is screwed on the outer peripheral side of the cylindrical body, the piston is concentrically integrated with the other end of the cylindrical body. An adjusting ring having an internal screw provided separately, an annular temporary fixing holder having an external screw engaged with the internal screw, and a pressing member movable with a screw in the radial direction with respect to the temporary fixing holder And

[0007] The second configuration is the same as the first configuration, except that one of the adjusting ring and the temporary fixing holder has a circumferential scale and other components.
Is provided with a reference display mark .

[0008]

[Action] The knife is brought into contact with the end face of the other knife, and this position becomes the zero point. Next, when the temporary fixing screw is rotated, the pressing member is pressed against the arbor shaft, and the temporary fixing holder is fixed to the arbor shaft. Next, the adjusting ring is turned, and the knife is retracted by a necessary clearance amount.
When the operating screw is turned to pressurize the pressurizing chamber, the cylindrical body is fixed to the arbor shaft.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to an embodiment shown in the drawings.

An annular knife N is concentrically fixed to one end of the cylindrical main body 1, and an oil pressurizing chamber 2 is provided on the inner peripheral portion of the cylindrical main body 1. An operation screw 4 for adjusting the position of the piston is screwed to the outer peripheral side of the cylindrical body 1.

Here, an annular adjustment ring 5 is concentrically rotatably connected to the other end of the cylindrical main body 1. That is, the short cylindrical body 5a has an inner screw 5b on the inner peripheral surface and a knurled surface 5c on the outer peripheral surface, and an inner flange 5d is integrally formed on the end of the cylindrical main body 1 side. And the cylindrical body 1
The inner flange 5d is rotatably fitted to the stepped reduced diameter portion 1a, and then the retaining ring 9 is screwed to the end face of the cylindrical main body 1. A circumferential scale is provided on the end face of the adjustment ring
Have been.

An annular temporary fixing holder 6 is screwed into the inner screw 5b. The holder 6 has an external thread 6a on the outer peripheral surface of the annular main body, and concave portions 6b are formed on the side of the cylindrical main body 1 at three places at equal intervals in the circumferential direction. The recess 6b has a sloped surface 6c radially outward, a radially inner side open, a flat surface 6d parallel to the radius on both sides in the circumferential direction, and a bottom surface 6e parallel to the axis perpendicular direction.
have. A long hole 6f extending in the radial direction is provided through the bottom surface 6e and the end surface in the axial direction. Temporary hold
Δ is provided on the end face of the die as a reference display mark.

A pressing member 7 is slidably provided in the recess 6b in the radial direction of the ring and in the axial direction. The pressing member 7 has substantially the same shape as the recess 6b. And the pressing member 7
A temporary fixing screw 8 screwed into the hole 6f passes through the long hole 6f in parallel with the direction of the annular axis and has a head 8a at an end.

The operation state will be described above. The operating screw 4 is loosened to release the pressure in the pressurizing chamber 2 and release the cylinder body from the arbor shaft A. Then, the cylindrical main body 1 is slid on the arbor shaft A, and the knife N is brought into contact with the end face of the other knife, and this position becomes a zero point. Next, when the temporary fixing screw 8 is rotated clockwise, the pressing member 7 is stopped in the recess 6b, and thus moves rightward in the drawing. Then, a component force is generated inward in the radial direction of the ring by the inclined surface 6c, and the pressing member 7 and the temporary fixing screw 8 move in the direction along the elongated hole. Thus, the pressing member 7 is pressed against the arbor shaft A, and the temporary fixing holder 6 is fixed to the arbor shaft A. Next, the reference display mark of the ring temporary fixing holder 6 and the adjustment
Turn the adjustment ring 5 to the left while watching the circumferential scale of the ring 5.
Then, the knife N is retracted to the right by the necessary clearance amount. When the operating screw 4 is turned to pressurize the pressurizing chamber 2, the cylindrical body 1 is firmly fixed to the arbor shaft.

The adjusting ring 5 is integrated with the cylindrical body 1,
Alternatively, they may be fixed separately. In this case, these are all rotated and adjusted in position. Also, as shown in FIG. 3, the temporary fixing screw 1 is attached to the end face of the temporary fixing holder 6 via the intermediate member 11.
2 may be movable forward and backward in the radial direction of the ring, and the pressing member 13 may be rotatably attached to the end thereof. Further, as shown in FIG. 4, a temporary fixing screw 12 may be screwed through the inner peripheral surface of the holder 6 while being inclined in the axial direction from the end surface of the holder 6. Further, the temporary screw 12 may also serve as the pressing member.

[0016] If there is a circumferential scale and reference display mark serving zero indication mark on the end face of the adjustment ring 5 tacking holder 6, while using a clearance gauge, the adjustment ring 5 is rotated.

The present invention is not limited to the embodiments and embodiments described above, but includes various modifications without departing from the spirit and scope of the utility model registration request.

[0018]

[Effects of the Invention] With the configuration of the present invention, setup time and labor during work can be reduced. In addition, with the accurate clearance setting, in the case of a slitting operation, an improvement in slit accuracy and a clean cut surface with less burrs can be obtained.

[Brief description of the drawings]

FIG. 1 is an axial sectional view of an embodiment of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is an axial sectional view of another embodiment of the present invention.

FIG. 4 is an axial sectional view of still another embodiment of the present invention.

[Explanation of symbols]

A: Arbor shaft N: Knife 1: Cylindrical body 2: Pressurizing chamber 3: Piston 4: Operating screw 5: Adjusting ring 5a: Short cylindrical body 5
b: Internal screw 6: Temporary fixing holder 6a: External screw 6b: Recess 6c:
Inclined surface 6d Flat surface 6e Bottom surface 6f Long hole 7 Pressing member 8 Temporary fixing screw 9 Retaining ring

Continuing on the front page (72) Inventor Naoki Saeki 5 Ishizunishimachi, Sakai City, Osaka Nisshin Steel Co., Ltd. Sakai Works (56) Reference Reference (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B23D 19/04

Claims (2)

(57) [Scope of request for utility model registration] An annular knife is concentrically fixed to one end of a cylindrical body, and an oil pressurizing chamber is provided on an inner peripheral portion of the cylindrical body.
A clearance adjusting device for an annular knife in which a piston is slidably opposed to the oil pressurizing chamber in a radial direction of the cylindrical body, and an operation screw for adjusting the position of the piston is screwed to an outer peripheral side of the cylindrical body. An adjusting ring having an internal thread concentrically integrally or separately provided at the other end of the cylindrical main body; an annular temporary fixing holder having an external thread screwed to the internal screw; A clearance adjusting device for an annular knife, comprising: a pressing member movable by a screw in a radial direction. 2. A clearance adjusting device for an annular knife according to claim 1, wherein a circumferential scale is provided on one of said adjusting ring and said temporary fixing holder , and a reference mark is provided on the other .