JPH08257257A - Thin shaving cutter - Google Patents

Abstract

PURPOSE: To improve the operability of thin shaving by turning out the top end part of a square shaped frame part on the opposite side of a grip part, setting the turned-out top end part at a specified angle to the lengthwise axial line of the grip part and mounting a blade in the pocket of turning-out. CONSTITUTION: This thin shaving cutter is composed of a grip part 2 and square shaped frame part 1 provided at the top end of the grip part. Then, the top end of the square shaped frame 1 is turned out, and a blade 3 is mounted at a sheath part 6 in the turned-out structure while turning the tip of the blade toward the grip part 2 and fixed by screws 5. Besides, the blade is fitted to the grip part 2 at the prescribed angle to the square shaped frame part 1 so that the contact of the blade 3 and a surface to be cut can be secured. Besides, the blade 3 is fitted to the grip part 2 especially at an angle smaller than 90 deg. to its lengthwise axial line. Thus, when performing a thin shaving cutting by pulling the grip part 2 backward, the effect of cutting due to the oblique pulling of a cutting part is secured and sharpness is improved. Further, a frame hole 4 is formed on the square shaped frame part 1 and the conditions of cutting can be observed through the frame hole 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention does not bite into the cutting surface, its structure does not leave the blade exposed, and it is highly safe. The present invention relates to a thin cutter that excels in shaving operability.

[0002]

2. Description of the Related Art Conventionally, as tools for cutting the outer surface of an object, there are a peeler for vegetables and fruits, a tool for removing pills adhering to the surface of a woolen fabric, and a cutting tool for woodworking. A peeler is a device for peeling the surface skin of vegetables, which is a curved surface, easily and safely. A device that allows the thickness of the skin to be adjusted is disclosed in Japanese Utility Model Publication No. Sho 49-70600. It is disclosed in Japanese Patent Publication No. 5-10930.
Further, as a pill removing tool, a tool for sandwiching fluff on a woolen fabric, which is extremely difficult to peel off, with an uneven portion provided on a holding portion, and scraping it off with a blade razor is disclosed in Japanese Utility Model Laid-Open No. 59-57596. There is. On the other hand, cutting tools for plastics, rubber, and woodworking include knives and cutters as well as planes that smooth the surface of wood, etc., as well as folding type iron handles and a type of knife, Higomori. Is often used. The structure of these cutting tools differs depending on the material, shape, hardness, purpose of cutting and the like of the surface to be cut.

On the other hand, in recent years, various membrane separation techniques have been developed and membrane modules are frequently used, and it is desired to develop a thin cutter for cutting the end face of the membrane module sealing portion in the manufacturing process thereof. For example, in manufacturing a hollow fiber membrane module using a hollow fiber membrane as a separation membrane, a plurality of hollow fiber membranes are adhered and sealed between the hollow fiber membranes and a case housing with a resin or the like, and the ends of the hollow fiber membranes are sealed. The part surface is configured to be open. The resin used for sealing is usually an epoxy resin, a urethane resin, a polyolefin resin, a fluorine-containing resin, or a polyamide resin, and the hollow fiber membrane is opened by cutting the sealing portion after sealing. The sealing part is cut with a cutting tool such as a slicer, an end mill, and a rotary disk. However, even with these, the cut surface has unevenness, and a thin-cutting cutter for cutting the unevenness is required.

[0004]

The end face of such a sealing portion has a certain degree of hardness because the member is made of the hollow fiber membrane and the sealing material, and the cut surface is substantially flat. Also,
The purpose of thinning is to smooth the sealing cross section. The conventional peeling machine is suitable for an object whose cut surface has a curved surface due to the structure of attaching the blade, and is not suitable for cutting the end surface of the sealing portion. Further, if a plane, which is a cutting tool for woodworking, is used, it may bite deeply into the cutting surface, and visual adjustment is necessary to suppress the biting. However, the plane is invisible due to its structure. Moreover, since there are planes before and after the plane blade,
You can't go deep into the blade when you need it. Therefore, skill is required in use. Also, the blade must be polished, and the polishing is also required. Further, when a long blade such as a knife is used, the blade is exposed, so that the safety is inferior. If the cutting surface is longer than the blade length, thin shaving is difficult and operability is extremely poor. Further, in order to improve the sharpness, the blade is pulled at an angle instead of being drawn at a right angle to the cutting direction, but this operation also requires skill, and polishing of the blade requires skill.

[0005]

According to the present invention, in order to achieve the above object, a blade is attached to a frame having a visual part so that the cutting edge forms an angle of 90 ° or less with respect to the major axis direction of the handle. The present invention has been achieved by finding that all the above problems can be solved.

[0006] That is, the present invention is a thin shaving cutter comprising a handle and a square frame provided at its tip, and the tip of the square frame opposite to the handle is folded back. The present invention provides a thinning cutter in which the tip of the folded back forms an angle of 90 ° or less with the longitudinal axis of the handle and the blade is detachably attached to the pocket of the folded back. The present invention also provides the thin-cutting cutter, wherein the blade is obtained by cutting a replacement blade having a fold line. Further, the above-mentioned thinning cutter is characterized in that the attached blade surface has a warp. Hereinafter, the present invention will be described in detail.

A thinning cutter according to the present invention will be described with reference to the drawings. The present invention is not limited to these. First, the thin shaving cutter of the present invention comprises a grip handle portion and a square frame portion provided at its tip as shown in FIG. The grip handle portion and the square frame portion may be integrally formed or may be combined with different members. In addition,
Reference numeral 1 in the drawing indicates a square frame portion, 2 a grip handle portion, 3 a blade, 4 a frame hole provided in the frame, and 5 a screw for fixing the blade to the frame 1.

As shown in FIG. 2, the end of the square frame portion has a folded structure, and the blade 3 is attached to the sheath 6 in the folded structure with the cutting edge directed toward the grip handle 2 and fixed by the screw 5. To be done. Specifically, the screw 5 is loosened, the blade 3 is housed in the sheath portion 6, and the screw 5 is tightened to fix the blade 3. When the blade 3 is fastened from above with the screw 5 of the square frame 1 in this way, the blade 3 can be easily attached to and detached from the sheath portion 6, and when the sharpness of the blade decreases, the blade 3 The polishing operation can be omitted by replacing the blade with another blade without polishing.

The grip handle 2 is at an angle of 5 to the square frame 1.
It is preferable to mount at 30 °, especially angle 1
It is in the range of 0 to 20 °. By mounting in this way, during the cutting operation, the blade 3 is not obstructed from the contact with the surface to be cut by the grip handle portion 2, the square frame 1, and the like.

The blade 3 may be curved and attached as shown in FIG. By forming the curve, it is possible to reduce the contact portion with the concave and convex portion, and it is possible to perform a fine operation. The degree of curvature is such that when the frame width is 30 to 50 mm, the difference [h] between the frame center part and the frame end part in FIG. 3 is 0.1.
It is preferably in the range of -5 mm, particularly in the range of 1-2 mm.

The blade 3 attached to the square frame portion 1 is characterized in that it is attached at an angle of 90 ° or less with respect to the longitudinal axis of the grip handle portion 2, preferably in the range of 85 to 45 °. It is preferably in the range of 80 to 55 °. By mounting the grip handle 2 in this manner, the blade 3 moves the cutting surface at the above angle when the grip handle 2 is pulled backward to perform a thin-cutting operation. Therefore, the sharpness is better than when mounted at a right angle.

Since the square-shaped frame 1 has the frame hole 4, it is possible to perform processing while observing the cutting state through the frame hole 4 when the blade is applied to the surface to be cut. This makes it easier to check the cutting location and adjust the degree of cutting, enabling reliable cutting.

According to the thin-cutting cutter of the present invention, since the blade 3 can easily contact the surface to be cut, the surface to be cut can be a flat surface or a curved surface, and the cutting surface can be processed into a flat surface. It can also be used for the purpose of removing. Also, by adjusting the size of the square frame 1,
It is also possible to cut a large area at once. As a member to be cut, it can be widely used for rubber, plastics, woodworking and the like.

[0014]

EXAMPLES Examples will be described below, but the present invention is not limited thereto.

(Example) Total length 210 mm, sheath portion 5.5 m
m, making a thin cutter with a square frame 1 mm thick,
A commercially available replacement blade for a cutter knife (“HA200” manufactured by KOKUYO Co., Ltd.) was fixed to this at an attachment angle of 60 ° and a curvature ([h]) of 1.2 mm. The end face of the sealing portion of the hollow fiber membrane module manufactured in advance was cut using this thinning cutter. The hollow fiber membrane module has an inner diameter of 800μ
m, outer diameter 1300 μm, cellulose acetate hollow fiber membrane 64
A hollow fiber membrane bundle consisting of 00 pieces was inserted into a case housing, and its ends were centrifugally adhered with a urethane adhesive and then cut.

[0016]

According to the thin-cutting cutter of the present invention, the end face of the sealing portion of the hollow fiber membrane module can be easily cut. The end face of the sealing portion is usually sealed and fixed with urethane resin or epoxy resin, and it is often cut deep with a normal cutter. However, when the thin shaving cutter of the present invention is used, the end face can be easily cut only by pulling the grip handle portion, and since the blade portion is fixed to the sheath portion, there is no deep cut. Also, when used for woodworking and the like, it is possible to perform cutting while visually checking the uneven portion, which is excellent in operability, and since the blade makes a predetermined angle with the grip handle portion, an effect of diagonal cutting can be obtained. Furthermore, since the blade can be easily replaced, a cutting effect with good performance can be easily obtained.

[Brief description of drawings]

FIG. 1 shows a plan view of a shaving cutter of the present invention.

FIG. 2 shows a side view of the shaving cutter of the present invention.

FIG. 3 shows a mode in which the blade portion is curved when the blade portion is cut from the direction of the grip handle portion 2 by cutting along the cutting plane XX ′ in FIG. 1.

[Explanation of symbols]

 1 square-shaped frame 2 grip handle 3 blade 4 frame hole 5 screw 6 sheath

Claims (3)

[Claims] 1. A thin shaving cutter comprising a grip handle and a square frame provided at its tip, wherein the tip of the square frame opposite to the handle is folded back and folded back. A thin-cutting cutter in which the tip portion forms an angle of 90 ° or less with the longitudinal axis of the handle and the blade is detachably attached to the folded pocket. 2. The thin shaving cutter according to claim 1, wherein the blade is formed by cutting a replacement blade having a fold line. 3. The thin shaving cutter according to claim 1, wherein the attached blade surface has a warp.