JPH11853A - Cutter grinding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter grinding device for allowing anyone to easily conduct grinding work. SOLUTION: This grinding device has a grinding part 10 formed with a rotating mechanism to rotate a wet cylindrical grinding tool 11 and a water tank 12 supplied with water to wet the grinding tool 11, a cutter mounting part 20 to mount the cutter 21 thereon, a reciprocally driving part 30 to reciprocally drive the cutter 21 along the cutter edge, an up-and-down moving part 40 to press the cutter 21 against the grinding tool and a thrust control mechanism to control the thrust of the cutter 21 against the grinding tool 11. The thrust, angle and reciprocating speed of the cutter to the grinding tool 11 are automatically controlled to do grinding work, so that anyone can do grinding work for the cutter 21 for which skills have been required.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade polishing apparatus for sharpening a blade of a sword-like blade.

[0002]

2. Description of the Related Art Conventionally, this type of knife polishing apparatus has
A simple jig for rotating a wet-type cylindrical grindstone and a polishing part composed of a water tank containing water for moistening the grindstone as a main part, fixing a blade to this, and reciprocating. Are used. Then, when sharpening the blade, polishing was performed by manually adjusting the force, angle and reciprocating speed of pressing the blade against the grindstone. Specifically, polishing was performed by reciprocating while adjusting the force and angle of pressing by hand.

[0003]

However, the conventional manual polishing work takes a considerable amount of time, and it is very difficult to sharpen sharply and requires skill. Even if a simple jig is provided, it takes a considerable amount of time and requires patience. In addition, there is also a problem that it is costly to perform this operation with a polishing professional.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a blade polishing apparatus that allows anyone to easily perform a polishing operation.

[0005]

In order to achieve the above-mentioned object, the present invention provides a blade polishing apparatus comprising: a rotating mechanism for rotating a wet-type cylindrical grindstone; and a water tank containing water for moistening the grindstone. , A blade mounting portion for mounting the blade, a reciprocating drive unit for reciprocating the blade in the blade span direction, a vertically movable unit for pressing the blade against the grindstone, and pressing the blade against the grindstone A pressure adjusting mechanism for adjusting the force.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment will be described with reference to an example in which the polishing apparatus of the present invention is used for polishing a cutting knife of a roll paper end face packaging material removing apparatus.

FIG. 1 is a front view of a blade polishing apparatus according to the present invention, and FIG. 2 is a side view thereof. As shown in these figures, the blade polishing apparatus comprises a polishing section 10, a blade mounting section 20, a reciprocating drive. The unit 30 includes a vertically movable unit 40.

The polishing section 10 comprises a wet cylindrical grindstone 11, a rotating mechanism for rotating the grindstone 11, and a water tank 12 containing water for moistening the grindstone 11. In this example, a commercially available grindstone having a number of about 1000 and a diameter of 200 mm and a width of 40 mm is used. The rotation mechanism is
The motor 13 is used as a drive source, and the grindstone 11 is rotated using a timing belt 14. The whetstone 11 is replaceable as shown in FIGS. That is, bolt 1
After turning 5 to disengage, the lid portion 16 of the frame 16 is pivoted around the hinge 17 and lifted up as shown in FIG. . Next, as shown in FIG.
After turning 9 to remove, the whetstone 11 is replaced with a new one. In the figure, reference numerals 18a denote bearings provided at both ends of the rotating shaft 18.

[0009] The blade mounting portion 20 has a right-hand and a reverse-hand blade 21, and the mounting jig 22 has a symmetrical Y-shape, so that each blade can be mounted. I have. In order to mount the cutting tool 21 to the mounting jig 22, a mounting hole is previously opened in the cutting tool 21 and is fixed by tightening with a bolt 23 as shown in FIG. The mounting angle of the blade 21 depends on the edge angle of the blade, but in this example, the angle α with respect to the tangent of the grindstone 11 is set to 20 ° as shown in FIG. In the above example, the fixing method using the bolts 23 is used for attaching the blade 21. However, a method of sandwiching and fixing the blade 21 may be adopted so as to be applicable to blades of other shapes. Further, the angle of the blade mounting portion 20 may be changed so as to be able to correspond to an arbitrary blade edge angle.

[0010] The reciprocating drive unit 30 is for reciprocating the blade 21 in the blade span direction.
Guided rodless cylinder 3 mounted on 1
2 is used to perform the function and drive of the guide. Specifically, the mounting jig 22 of the blade mounting portion 20 is guided to reciprocate. The method of controlling the pneumatic pressure of the guideless rodless cylinder 32 includes an electric sequence control and a relay sequence control using the pneumatic pressure. However, in the present apparatus, the latter pneumatic control is adopted because the movement is simple. . The speed is adjusted by speed control valves attached to each port of the cylinder. The reciprocating speed is 100 to 200 milliseconds, and the sharpening time is about 5 minutes, depending on the condition of the blade.

The vertically movable portion 40 is for pressing the cutting tool 21 against the grindstone 11, and in the example shown in the drawing, is configured using a guide system using a linear shaft 41 and a linear bush 42. A pressing adjustment mechanism for adjusting a force pressing the pressing member 11 is provided. Specifically, a linear bush 42 is attached near both ends of the horizontal frame 31 in the reciprocating drive unit 30, and the linear bush 42 is inserted into linear shafts 41 erected on both sides of the apparatus. It is in a state of riding on the compression spring 44 which is fitted with the compression spring. Therefore, by loosening the collar fixing bolt 45 and lifting the collar 43 upward, it is possible to increase or decrease the force for pressing the blade 21 against the grindstone 11 during polishing.

[0012]

As described above, according to the blade polishing apparatus of the present invention, since the polishing operation can be performed by automatically adjusting the force, angle and reciprocating speed of pressing the blade against the grindstone, a skilled technique is required. Anyone can easily carry out the polishing work of the blade.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a blade polishing apparatus according to the present invention.

FIG. 2 is a side view of the blade polishing apparatus shown in FIG.

FIG. 3 is an explanatory diagram showing a state in which the grindstone of the polishing unit is removed from the apparatus in order to replace the grindstone.

FIG. 4 is an explanatory diagram showing a state in which a grindstone is removed from a rotating shaft.

FIG. 5 is an explanatory diagram showing an attached state of a blade.

FIG. 6 is an explanatory diagram showing an attachment angle of a blade.

DESCRIPTION OF SYMBOLS 10 Polishing part 11 Whetstone 12 Water tank 13 Motor 14 Timing belt 15 Bolt 16 Lid part 17 Hinge 18 Rotating shaft 19 Nut 20 Blade mounting part 21 Blade 22 Mounting jig 23 Bolt 30 Reciprocating drive part 31 Horizontal frame 32 Guide -Rodless cylinder 40 Vertically movable part 41 Linear shaft 42 Linear bush 43 Collar 44 Compression spring 45 Color fixing bolt

Claims (1)

[Claims] 1. A polishing unit comprising a rotating mechanism for rotating a wet-type cylindrical grindstone and a water tank containing water for moistening the grindstone, a blade mounting part for mounting a blade,
A reciprocating drive for reciprocating the blade in the blade length direction;
A blade polishing apparatus comprising: a vertically movable portion for pressing a blade against a grindstone; and a pressing adjustment mechanism for adjusting a force for pressing the blade against a grindstone.