JPH0698560B2 - Cutting edge honing device for industrial blades - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cutting edge honing device for various industrial blades such as a knife for cutting printed materials and industrial blades. The purpose is to improve.

(Prior Art) When honing the cutting edge of various industrial blades, the abrasive material in the form of a grindstone is held in contact with the bare hand according to the angle of the cutting edge, and the abrasive material is moved in the longitudinal direction of the cutting edge. The most common method is to repeat the sliding reciprocation.
Therefore, the hands are always dangerous.

Further, for honing of a cutting edge called a so-called "chip" having a short cutting edge length, means for moving the grindstone while giving a predetermined angle change to the grindstone, means for fixedly positioning the cutting edge constituting the work, and A cutting edge honing device including means for pressing the cutting edge of the cutting blade against the grindstone has recently been disclosed as Japanese Patent Laid-Open No. 61-103765.

(Problems to be solved by the invention) However, in the means for holding the abrasive in the lengthwise direction of the cutting edge with bare hands and repeating sliding reciprocation, uneven polishing easily occurs along the lengthwise direction of the cutting edge However, there is a problem in that it is always accompanied by danger and that the operation rate of the line is lowered because the work takes a long time.

On the other hand, the recently developed cutting edge honing device of JP-A-61-103765 is developed as a honing device for a cutting blade having a short cutting edge length, which is called a "tip", and is not only general, The structure is complicated, and there is a problem that it is completely unsuitable for polishing a long blade edge which is intended by the present application, which is not practical.

(Means for Solving the Problems) The present invention solves various problems in the above-described conventional technology, and simplifies work, improves honing work efficiency, and eliminates the need for skill. Moreover, the purpose is to obtain a stable honing effect, and especially to make honing work safer.

The specific configuration of the present invention will be described below. The present invention is such that a pair of frames whose face-to-face angles are adjustable within a range of approximately 120 degrees to each other, and a plurality of respective frames provided for each of the pair of frames. It consists of a rotating grindstone that can move back and forth in the facing direction.

Further, the present invention relates to a cutting edge of an industrial blade equipped with one or a plurality of rotatable guide rollers on at least one facing side of a pair of frames whose facing angles are adjustable within a range of about 120 degrees to each other. Also related to honing equipment.

Further, normally, five rotary grindstones are detachably attached to the pair of frames, and each of the above rotary grindstones may have different grain sizes. It was made possible.

(Operation) A pair of frames with adjustable facing angles are adjusted by adjusting the facing angle of the frames according to the thickness and angle of the cutting edge of the blade to be honed, and further moving the rotary grindstone back and forth in the facing direction. After the adjustment, the reciprocating sliding movement of the entire frame is repeated along the length direction of the cutting tool while the cutting edge is brought into contact with the rotary grindstone of at least one of the frames. At this time, each rotary whetstone rotates along with the movement of the frame to polish the cutting edge.

Further, when the frame is moved, the guide roller comes into line contact with the side surface of the blade and rolls along the lengthwise direction to facilitate the movement of the frame.

(Execution example) Explaining below the concrete contents of this invention on the basis of the execution example which is shown, 1 and 16 are the pair of frames which adjustable the facing angle within the range of approximately 120 degrees mutually,
11a, 11b, 11c and 23a, 23b are the above-mentioned pair of frames 1
And a rotating grindstone provided for each of 16 and 14 which can freely move back and forth in the facing direction of each frame, 14a, 14b and
26 is the rotary grindstones 11a, 11b in each frame 1 and 16,
The side plates 1a and 1 are located at intermediate portions between 11c and 23a and 23b.
6a shows a guide roller rotatably provided on each of 6a.

A side plate 1a is vertically planted on the side surface of the frame 1, and a pair of end plates 2 and 6 are integrally attached to both ends of the frame 1 in the length direction.

The end plate 2 has an outer peripheral edge having a substantially semi-circular shape, and has a flange 4 protruding inside the outer peripheral edge, and also inside the inner peripheral side edge of the end plate 2 concentric with the outer peripheral edge. It has a flange 3 protruding in the same direction, so that a groove 5 is formed between both flanges.
Are formed.

The end plate 6 has a shape substantially corresponding to the end plate 2, and a flange 8 that also protrudes inward from the outer peripheral edge and an inner peripheral side edge of the end plate 6 concentric with the flange 8 in the same direction. A groove portion 9 is formed between both flanges by the flange 7 which is projected to the outside.

Reference numeral 10 denotes a long groove provided in an arc shape along the outer peripheral flange 8 of the end plate 6.

The frame 1 has adjusting screws at equal intervals along its length.
Rotating shafts 12a, 12b, 12 are provided with 13a, 13b, 13c, and each adjusting screw is rotatably penetrated along its axis.
c is attached, and the rotary grindstones 11a, 11b, 1 are attached to the respective rotary shafts.
1c is attached, which allows adjustment screws 13a, 1
The rotating grindstone advances above the frame 1 when the 3b and 13c are rotated in the clockwise direction, and retracts when rotated in the counterclockwise direction.

The guide rollers 14a and 14b are the above-mentioned rotary grindstones 11a and 11b,
And 11b and 11c, respectively, are attached to the side plate 1a and are rotatably supported by roller shafts 15a and 15b projecting parallel to the upper surface of the frame 1.

The frame 16 also has a side plate 16a at right angles to its side surface.
And a pair of end plates 17 and 20 are integrally attached to the left and right ends of the frame 16 in the length direction.

The length of the frame 16 including the left and right end plates 17 and 20 is equal to the inner distance between the left and right end plates 2 and 6 of the frame 1 described above, and the end plate 17 has a circle on the inner peripheral side thereof. Arc-shaped flange
18 is provided so that the outer peripheral edge thereof is the frame 1
Is loosely fitted in the groove portion 5 of the end plate 2.

The end plate 20 is formed in an arc shape so that the diameter on the inner peripheral side is equal to the outer diameter of the flange 7 of the end plate 6 in the frame 1, and the outer peripheral edge is equal to the inner diameter of the flange 8 of the end plate 6 in the frame 1. As a result, the outward projecting portion 19 of the end plate 20 is loosely fitted in the groove portion 9 inside the end plate 6 of the frame 1, so that the pair of frames 1 and 16 are at least substantially mutual.
The face-to-face angle is adjustable within the range of 120 degrees.

Further, the frame 16 is provided with adjusting screws 25a and 25b at equal intervals along the length direction thereof, and each adjusting screw is attached with rotating shafts 24a and 24b rotatably pierced along its axis. The rotary shafts are provided with rotary grindstones 23a and 23b, and when the adjusting screws 25a and 25b are rotated clockwise, the rotary grindstones are advanced above the frame 16 and are rotated counterclockwise. And is configured to retreat.

Further, the guide roller 26 is located in the middle of the above-mentioned rotary grindstones 23a and 23b and is attached to the side plate 16a, so that the frame 1
It is rotatably supported by a roller shaft 27 which is provided so as to project parallel to the upper surface of 6.

In the figure, reference numeral 22 denotes a fixing screw, and the screw shaft 21 is screwed into the end plate 20 on the frame 16 side when rotated clockwise, and is gradually removed from the end plate 20 when rotated counterclockwise. And the long groove 10 provided in the end plate 6 on the frame 1 side.
The facing angle between the frame 1 and the frame 16 can be freely fixed via the.

However, in the above configuration, the adjustment screws 13a, 13b, 13c
Rotate the grinding wheel 11
Frames 1 and 16 of a, 11b, 11c, and 23a, 23b
Adjust the degree of protrusion to the
After adjusting the facing angle of the frame 1 and the frame 16 with each other, the fixing screw 22 is again rotated clockwise to fix both angles, and the rotary whetstones 11a, 11b, 11c and 23a, 23
The b is brought into contact with the blade edge of the blade to be honed and the sliding reciprocating motion is repeated to perform the blade honing operation. In this case, the guide rollers 14a, 14b on one side, or
If any of 26 is used, adjust screws 13a, 1
By rotating 3b, 13c, or 25a, 25b counterclockwise and retracting the rotating grindstone toward the frame, the guide roller of that portion is projected, and this is brought into contact with the side surface of the blade, and the blade is cut. Perform honing work while guiding the movement of the.

If the rotating grindstone on one frame is not needed, only the guide roller can be used, or a guide bar (not shown) with good lubricity can be attached or formed to adjust the angle as desired. It is also possible to perform honing work while making the part function as a guide for moving blades.

(Effects of the invention) As described above, the present invention is provided with a rotating grindstone on at least one of a pair of frames whose facing angles can be adjusted within a range of approximately 120 degrees to each other, so that the angle of the cutting edge can be freely adjusted. In addition, since the rotating grindstone rotates during honing work, there is no uneven wear, and since the rotating grindstone can move back and forth, the protruding position with respect to the frame can be set arbitrarily, there is no danger during honing,
Safe and accurate honing of the cutting edge can be performed without requiring skill.

In addition, 1 is provided on at least one of the facing sides of the pair of frames.
Alternatively, when a plurality of rotatable guide rollers are attached, the mobility during the reciprocating movement of the blade during the honing operation becomes good.

Furthermore, depending on the degree of wear of the blade to be honed, a plurality of rotary grindstones having different grain sizes can be attached to perform the finishing work more efficiently.

[Brief description of drawings]

FIG. 1 is a perspective view of a cutting edge honing device which is an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA of FIG. 1, 16 ... Frame 2, 6, 17, 20 ... End plate 5, 9 ... Groove portion, 10 ... Long groove 11a, 11b, 11c, 23a, 23b ... Rotating grindstone 12a, 12b, 12c, 24a, 24b ...... Rotary shafts 13a, 13b, 13c, 25a, 25b …… Adjustment screws 14a, 14b, 26 …… Guide rollers 15a, 15b, 27 …… Roller shaft 22 …… Fixing screws

Claims (2)

[Claims] 1. A pair of frames whose facing angles can be adjusted within a range of approximately 120 degrees to each other, and a plurality of rotary grindstones provided on each of the pair of frames and capable of advancing and retracting in respective facing directions. A cutting edge honing device consisting of and. 2. One or a plurality of rotatable guide rollers are mounted on at least one facing side of a pair of frames whose facing angles are adjustable within a range of approximately 120 degrees to each other. A cutting edge honing device according to claim (1).