WO1995004663A1

WO1995004663A1 - Tool for variably cutting tip of bar member

Info

Publication number: WO1995004663A1
Application number: PCT/JP1994/001275
Authority: WO
Inventors: Hiroo Hayashi
Original assignee: Hiroo Hayashi
Priority date: 1993-08-04
Filing date: 1994-08-02
Publication date: 1995-02-16

Abstract

A cutting tool which can selectively and variably set thickness, a cutting angle, a cutting shape and the like of a tip of a bar member (e.g. a pencil, a colored pencil, bar-shaped cosmetics, a marker and the like). In the bar member cutting tool having a cutter unit (1) including a bar member insertion hole (W) and one cutting blade (2) whose cutting edge is partly exposed to the insertion hole, a bar member variable inlet forming means comprising a rotational mechanism (17) of the cutting unit (1) and a fixed bar member inlet (18) arranged in a bar member shavings containing case is disposed. Furthermore, a fixed bar member tip control means (5) is disposed in an arbitrary position where said means abuts against the tip of the bar member during cutting in the cutter unit to enable the thickness of the tip of the bar member to be controlled.

Description

Description Rod tip variable cutting tool Technical field

TECHNICAL FIELD The present invention relates to a rod-shaped end variable cutting tool capable of selectively variably setting a cutting angle, a cutting thickness at a tip, and / or a cutting shape at a tip.

The rod that is the object of the present invention is, for example, a pencil, pencil-type eraser rubber, pencil-type cosmetics (for example, eyebrows, lipstick), a pencil-type color marker, etc., and wraps the core. Cylindrical, hexagonal, or polygonal rod with concentric outer shell, or rod-like body without outer shell and consisting essentially of the core itself Those that need to be cut are collectively referred to. Technology background

A typical example of this type of conventional cutting tool is a pencil sharpener. There are various types of pencil sharpeners in which a single pencil-cutting blade is attached to a main body block having a pencil insertion hole, and the general structure of a conventional device is well known without being illustrated.

Even with conventional equipment, there was a pencil sharpener that could be cut with different cutting angles and different cutting thicknesses (see, for example, Japanese Utility Model Publication No. 45-216165). However, it is a pencil sharpener using a spiral cutter with completely different properties and functions. It was complex and expensive, with several different cutting blocks.

Further, as a device provided with a mechanism for changing the mounting angle of one cutting blade, there is, for example, the prior invention of the present inventor (Japanese Patent Publication No.

3-7 2 480 Reference). The prior invention, Japanese Patent Publication No. Hei 3-72480, has already been put into practical use, and a pencil can be easily formed with a simple low-cost mechanism that slightly changes the axis of a single cutting blade. Although the thickness of the tip could be made variable, there was a problem that the thickness of the tip changed slightly depending on the degree of force applied when sharpening the pencil.

Further, as a pencil sharpener capable of shaving to a different tip thickness in a conventional apparatus, there has been a method in which a mounting position of a stopper is moved according to a desired tip thickness. However, since a mechanism for moving the stopper is required, the structure and handling are cumbersome, and it has been difficult to apply pencil sharpening at low cost. Disclosure of the invention

The object of the problem to be solved by the present invention is not limited to pencils as described above, but in the following description, pencils will be described as typical examples of those objects to be cut. Thus, an object of the present invention is to provide a pencil sharpener having a pencil cutting blade attached to a main body having a pencil insertion hole. Another object of the present invention is to provide a low-cost, high-value-added pencil sharpener having a high-performance adjusting function in which the pencil cutting angle is variable and the pencil shaft thickness is also variable. The inventor of the present invention has conducted intensive research to achieve the above object, and has provided a pencil inlet V 1 of a rod (lead brush) cutting tool body in a vertically long position, and has inserted a pencil at an arbitrary height position of a vertically elongated pencil insertion V 1. Horizontal pencil guide with variable guide position

3 Move the a to the left and right to insert the pencil sharpener into a vertically elongated pencil. As a result, the insertion angle of the pencil axis with respect to the pencil cutting blade was made more variable.

Furthermore, only when the selected pencil cutting angle is relatively small, the tip (core) control means is provided so that it comes into contact with the tip of the pencil core during cutting, and the tip (core) is controlled. The sharpness of the tip was controlled so that the desired tip thickness and tip shape could be obtained.

The tip control means is different from the conventional movable adjustment type stove, and can change the tip thickness and the tip shape despite being fixedly attached. The reason is that it is functionally related to the fact that the insertion angle of the pencil axis with respect to the pencil cutting blade is made variable by the adjusting means which constitutes the above-mentioned variable rod (pencil) inlet. Details will be described later. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an exploded perspective view of a first embodiment of a rod-shaped variable cutting tool according to the present invention, in which (a) is a main body portion of the cutting tool, and (b) is a detachable and laterally movable front of the main body portion. The figure which shows an example of the mask member attached to.

Fig. 2 shows the first embodiment shown in Fig. 1 in which the vertical rod entrance V1 and the position A of the horizontal rod guide □ 3a intersect to form a variable rod entrance. FIG.

FIG. 3 shows a state in which the vertical rod inlet V 1 and the D position of the horizontal rod guide 3 a intersect to form a rod variable inlet in the first embodiment shown in FIG. FIG.

FIG. 4 is a front perspective view showing a state in which the vertically elongated rod entrance V 1 and the G position of the horizontally elongated rod guide 3 a cross each other in the embodiment shown in FIG. 1 to constitute a variable rod entrance. .

FIG. 5 is an explanatory view illustrating a tip cutting state by the rod tip variable cutting tool of the present invention.

FIG. 6 is a view showing a second embodiment of the present invention. FIG. 6 ( _a ) shows that the vertical rod entrance V1 and the position A of the horizontal rod guide port 3a 'intersect, and the rod is variable. FIG. 2 is a front perspective view showing a state forming an entrance, and (b) is a cutaway view showing (a) cut along line a-a.

In Fig. 7, the rod guide opening 3a 'in Fig. 6 is turned upside down, and the tip is sharp as shown in S7 shown in G position in Fig. 5 and the cutting angle is about 35. A front perspective view showing a state in which the vertical rod insertion □ V1 and the horizontal rod guide 3a 'intersect each other to form a rod-shaped variable entrance.

FIG. 8 shows that the vertical rod insertion V1 and the deformed horizontal rod guide port 3a "intersect when cutting to the core thickness of S1 shown in the A position of FIG. 5 in the third embodiment of the present invention. FIG. 2 is a front perspective view showing a state where a variable rod-shaped inlet is formed.

In Fig. 9, the top and bottom of the deformed oblong rod guide b 3a 表 in Fig. 8 is inverted, and the tip is sharpened as shown in S7 in G position in Fig. 5 and the cutting angle is cut to about 35 °. Vertical rod entry V1 and deformed horizontal rod guide port at the time Fig. 3 is a front perspective view showing a state where 3a "intersects to form a variable rod entrance.

Fig. 10 shows a case where the tip is sharpened as in S4 shown in D position in Fig. 5 by turning the front and back without changing the top and bottom from the state in Fig. 9, and the cutting angle is cut to about 25 °. FIG. 4 is a front perspective view showing a state in which a variable rod entrance is formed.

In Fig. 11, the top and bottom sides are further inverted from the state in Fig. 10, and the tip is sharpened to a state close to S6 shown in the F position in Fig. 5, and the cutting angle is about 30. FIG. 4 is a front perspective view showing a state where a variable rod-shaped inlet is formed when shaving is performed. FIG. 12 is a front perspective view showing a state in which a rod-shaped variable inlet is formed when the rod is cut into the thickness S1 shown in the position A in FIG. 5 in the fourth embodiment of the present invention.

Fig. 13 shows the bar of different thicknesses by turning the top and bottom as shown in the F position in Fig. FIG. 4 is a front perspective view showing a state in which a rod-shaped variable inlet is formed when the is cut to about 30 °.

FIG. 14 shows the state of the fifth embodiment in which the tip thickness of S1 shown in the A position of FIG. 5 is reduced in the pencil sharpening of the present invention in which the tip thickness is variable and the cutting angle is variable. FIG.

Fig. 15 shows the state of Fig. 14 with the top and bottom turned upside down, and a pencil of different thickness is sharpened as shown in S6 in the F position in Fig. 5 and the cutting angle is changed. front perspective view showing a state in which cut into about 3 0 ^0.

FIG. 16 is a perspective view of a sixth embodiment of the present invention.

FIG. 17 is a perspective view of a seventh embodiment of the present invention. FIG. 18 shows the positional relationship between the cutting edge line H-H of the cutting blade 2 and the rod inserted from the rod guide □ 3a and the relation with the tip control means 5 in the first embodiment of the present invention. (A) is a diagram showing an example of position A where a hexagonal pencil is sharpened to a long core with a solid line, and an example of a position G where a round pencil is shaved with a short core with a dotted line. b) The following is a diagram showing the relationship between the shape of the core contact surface of the tip control means 5 and the shape of the core cut by each, and (b) is the arc-shaped contact surface shape “n”. (C) is a diagram showing an oblique contact surface shape “P”, and (d) is a diagram showing an orthogonal contact surface shape “q”.

(e) is a cross-sectional view of a pencil sharpener suitable for mounting another example of the tip control means, (f) is an example of the tip control means and its contact surface t, and (g) is the contact surface t. ', And (h) shows the contact surface t ".

FIG. 19 shows an adjusting cam (rotating mechanism) 17, a cutting tool main body 1, and a rod when cutting to a core thickness of T 1 shown in the J position of FIG. 23 in the eighth embodiment of the present invention. The figure which shows the relative positional relationship with the body guide port 18, and shows that the vertically elongated pencil entrance V1 and the rod guide port 18 constitute a pencil variable entrance. FIG. 20 is a front perspective view corresponding to FIG.

Figure 21 shows a cutting angle of about 35 at T7 shown in the P position in Figure 23. This shows the relative positional relationship between the adjusting cam 17, the cutting tool body 1, and the rod guide port 18 when sharpening a sharpened tip, and the vertical pencil entrance V 1 and the rod guide port 18 are lead brushes. The figure which shows configuring a variable entrance. FIG. 22 is a front perspective view corresponding to FIG. 21.

FIG. 23 is an explanatory view illustrating a state of cutting the tip in the eighth embodiment shown in FIG.

FIG. 24 is a view showing a ninth embodiment of the present invention. Shavings storage case X, indicates, (b) is X, engaging and shows the rod shavings storage case X ₂ is integrated, (c), (d) , (e) are each X 1 and shows a state of changing the relative position of X _2, (: f) are plan sectional view taken at b-b line (d).

FIG. 25 is a view showing a tenth embodiment of the present invention, wherein (a) shows a rod shavings storage case Y 1 having three rod inlets and one fitting notch. shown, (b) shows a debris storage case Y ₂ scraping rods to integrate fitted bets, change the relative position of (c), (d), (e) are each Y, and Y ₂ (F) is a plan sectional view showing (d) cut along line c-c. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the pencil sharpening with variable tip thickness and variable tip shape and variable cutting angle according to the present invention will be described with reference to the accompanying drawings. In addition, the drawings illustrate an embodiment in which the present invention is implemented by lead brushing, and show simplified portions other than those necessary for easy understanding.

First embodiment:

FIGS. 1 to 4 show a first basic example of pencil sharpening with variable tip thickness and variable tip shape and variable cutting angle according to the present invention.

FIG. 1 is an exploded perspective view of the pencil sharpener of the present invention.

A cutting blade 2 is fixed to the upper surface of a pencil-sharpening body 1 made of metal, plastic, or any other material by, for example, a screw 4, and a vertical pencil inlet V 1 provided on the front surface thereof and below the cutting blade 2. Penetration hole W leading to is formed in the shape of a tapered, deformed conical tunnel. Lead The tip control means 5 may be fixed to the position.

On the front side of the pencil sharpener body 1 having the pencil entrance V 1, a mask 3 made of metal, plastic, or any other material is used. By a fitting means (ear frame 3 b) formed on one side thereof, It is fitted to the main body 1 so that it can move in the horizontal direction.

The mask referred to here refers to a mask that fits, for example, on the front surface of the main body 1 having the vertically long pencil case 1 and covers that surface. “Covering” does not mean closing in a closed manner. A horizontal pencil guide with vertical dimensions allowing the insertion of a pencil □ 3 A surface structure with an opening, a surface structure with a guide opening with a dimension allowing the insertion of a pencil, or a similar guide opening A formed frame structure or the like is conceivable.

Although this guide □ 3a is shown on the right-down, it may be up-right, down-left or up-left.

In addition, by providing unevenness for the click top with respect to the fitting portion of the mask 3 and the fitting portion of the main body 1 to which the mask is fitted, the mask 3 can be moved stepwise.

By moving the mask 3 to the left and right, the position of the horizontal pencil guide port 3a that aligns with the vertical pencil □ V 1 changes, and as a result, the insertion of the pencil into the vertical lead brush insertion OV 1 is allowed. The height will change.

Fig. 5 shows the shaving conditions when the positions A to G of the horizontal pencil guide b 3a of the mask 3 are selected. S 1 is a thick tip, S 2 is a medium tip, S 3 is a medium tip, and S 4 and below are thin tips.

Figure 2 shows a vertical pencil sharpener when sharpening to the pencil lead thickness S1 shown in Figure 5. FIG. 4 is a front perspective view showing a state in which a pencil inlet V 1 of the body and a horizontal pencil guide 3 a of a mask 3 intersect at a position A to determine the height position of the pencil variable inlet. Fig. 3 shows the vertical pencil insertion 1 and the horizontal pencil guide 3a of the mask 3 when sharpening and sharpening the core as shown in Fig. 5 at S4. Fig. 4 shows the pencil entrance VI and the horizontal pencil guide of the mask 3 when sharpening the tip of the pencil to about 35 ° as shown in S7 in Fig. 5. FIG. 6 is a front perspective view showing a state where a mouth 3a constitutes a pencil variable entrance at the G position.

In Fig. 5, the dotted line S indicates the actual designed maximum tip length and the tip is calculated from the hypothetical pencil tip length (A position) that would be cut if the tip was cut to the designed minimum cutting angle. This shows the position of the tip control means 5 provided at the position where the tip length (D position) when cutting to a sharp cutting angle is subtracted.

The tip control means 5 can adapt to a variable tip length and / or a variable tip thickness despite being fixedly provided. See Figure 18 below for the reason.

The illustrated core tips at the positions A, B, C, etc. cannot be sharpened with a length that is theoretically determined by the cutting angle of the lead brush with respect to the cutting blade 2. This is because the core abuts on the tip control means 5 during cutting, and further cutting advance cannot be performed. However, the pencil tip gradually retreats from the tip control means 5 toward the pencil entrance V1 as the cutting angle increases, so that the tip of the pencil gradually becomes thinner. In the illustrated D position, the core tip does not come into contact with the tip control means 5 and becomes sharply sharpened. Even at the E, F, and G positions shown, the cutting angle becomes large for the same reason, resulting in sharp cutting.

That is, in the first embodiment, the horizontal pencil guide □ 3 a that guides the pencil to an arbitrary position of the vertical pencil insertion 1 is moved left and right to intersect with the vertical pencil entrance V 1 and guide. By adjusting the angle of the pencil axis with respect to the pencil cutting blade, it is possible to adjust the pencil tip thickness from S1 to S4 steplessly by adjusting the angle of the pencil axis with respect to the pencil cutting blade. When the pencil tip is sharp, the pencil cutting angle can be adjusted steplessly from the position shown in position D to the position shown in position G in FIG.

Also, if the stepless guideway 3a is not a continuous groove but a groove whose height changes stepwise, the pencil can be sharpened in a stepwise pattern as illustrated in Fig. 5. It is possible.

In addition, it is also possible to set at a plurality of stages other than the above. The appearance, shape, size, material, and relative position of each part shown in the drawings can be designed in a wide variety of ways, and are not limited to those of the embodiment of the present invention.

Second embodiment:

The second embodiment is an example in which the width of the mask 3 of the first embodiment described above and the length of the horizontal guide 3a provided therein are shortened (almost halved), and compaction is performed. And Figure 7.

The mask 3 ′ of this example is provided with means (ear frames 3 b ′) to be fitted to the main body 1 on both front and back sides, as shown by a cross-sectional view taken along line aa in FIG. 6B. Fig. 6 (a) shows the vertical pencil input V1 and the horizontal pencil guide □ 3a 'with variable guide position when shaving to the pencil tip thickness of S1 shown in position A in Fig. 5. 3 is a front perspective view showing a state in which a pencil variable entrance A is configured. FIG.

Fig. 7 shows the horizontal pencil guide □ 3a 'in Fig. 6 turned upside down with the horizontal line as the axis. The tip of the pencil is sharp and the cutting angle is about 35, as shown at S7 in G position in Fig. 5. FIG. 6 is a front perspective view showing a state where a vertically long pencil insertion 1 and a horizontally long pencil guide opening 3a 'intersect each other to form a pencil variable entrance G when it is sharpened.

By moving the horizontal pencil guide □ 3 a ′ to the left and right, the same mechanism as described in the first embodiment can be used to cut the pencil by changing the pencil steplessly as shown in FIG. If it is set to, cutting can be performed with stepwise changes. The pattern that can be cut can be designed in various ways, and is not limited to FIG.

The pencil sharpener of the present invention having a variable tip thickness and a variable tip shape and a variable cutting angle can be placed in a pencil shavings storage case of various shapes.

Further, the plate-shaped mask means can be formed into a curved surface, and the mask means can be formed on the curved surface of the pencil shavings storage case.

Third embodiment:

A third embodiment of the pencil sharpener of the present invention is shown in FIGS.

In the third embodiment, the mask 3 "is further compacted by changing the position of the guide 3 &" by reversing the front and back about a horizontal line and / or reversing the front and back about a vertical line. Embodiment of the present invention You. With the same mechanism as described in the first embodiment, four types can be selected from the types illustrated in FIG. 5 and set in four stages to cut a pencil.

Fig. 8 shows the vertical pencil inlet V1 and the deformed horizontal pencil guide □ 3a "when shaving to the pencil tip thickness of S1 shown in position A in Fig. 5 to form a pencil variable entrance A. Fig. 9 is a front perspective view showing a state in which the pencil is inserted. Fig. 9 shows the transformed horizontal pencil guide opening 3a "shown in Fig. 8 turned around the horizontal line, and a pencil like S7 shown in G position in Fig. 5. Front view showing a state in which the vertical pencil insert 1 and the deformed horizontal pencil guide opening 3a "intersect when the tip of the core is sharpened and the cutting angle is cut to about 35 °, forming a pencil variable insert G It is a perspective view.

'Fig. 10 shows the deformed horizontal pencil guide □ 3a ”of Fig. 9 turned upside down with the vertical line as the axis. The tip of the pencil is sharp as shown in S4 at position D in Fig. 5, and the cutting angle is about 2 FIG. 6 is a front perspective view showing a state in which a vertically long pencil insertion V1 and a deformed horizontal pencil guide 3 & "intersect to form a variable pencil insertion when being sharpened to 5 °. In Fig. 11, the deformed oblong pencil guide port 3a "in Fig. 10 is further turned upside down with the horizontal line as the axis, and the tip of the pencil is sharpened close to S6 shown in the F position in Fig. 5 and the cutting angle is about FIG. 4 is a front perspective view showing a state in which a vertical pencil entrance V1 and a deformed horizontal pencil guide □ 3a ”cross each other to form a pencil variable insertion □ F when being sharpened to 30 °.

It is to be noted that the modified horizontal pencil guide opening 3a "of the present embodiment can be made of two crossed circles, ellipses, polygons or other shapes.

In addition, rotate the guide position 90 ° clockwise or counterclockwise to change the guide position. It is possible to cut, but this method reduces the types that can be cut.

Fourth embodiment-.

A fourth embodiment of the present invention is shown in FIGS.

In the fourth embodiment, not only the compacting according to the above-mentioned reverse method but also the shaving of pencils having different thicknesses such as a thin pencil for a notebook into different pencil tip thicknesses and different pencil cutting angles. An embodiment of the present invention will be described.

Fig. 12 shows the pencil entrance A when the vertical pencil entrance V1 and the horizontal pencil guide slot 3d intersect when sharpening to the pencil tip thickness of S1 shown in A position in Fig. 5. It is a front perspective view showing a state.

By turning the horizontal pencil guide □ 3 d left and right with the horizontal line as the axis, as shown in Fig. 5, the pencil is steplessly moved by the same mechanism described in the first embodiment. It can be cut by changing it, and if it is set step by step, it can be cut by changing step by step. The patterns that can be cut can be designed in many different ways.

Fig. 13 shows that the thin pencil guide □ 3 e is overlapped with the vertical pencil □ V 1 by reversing Fig. 12 with the vertical line as the axis. FIG. 4 is a front perspective view showing a state in which the tip of the pencil is sharp and the cutting angle is cut to about 30 °.

Next, from the state shown in Fig. 13, the front and back are turned around the horizontal line, and a thin pencil guide □ 3 e for notebooks etc. is overlapped with a vertically long pencil entry V 1 to form a lead brush variable entrance. However, it can be cut to the thickness of a pencil lead like S3 shown at the C position in FIG. Fifth embodiment:

A fifth embodiment of the present invention is shown in FIG. 14 and FIG.

In the fifth embodiment, compaction is performed by upside-down and / or upside-down inversion by 180 ° in-plane rotation, and two types can be selected from the various types of cutting shown in FIG. 5 to perform two-stage cutting. An example is shown in which another type of pencil is cut to a different pencil tip size and shape.

That is, two types of pencils having different thicknesses of the shafts can be set in two stages, and the pencils can be cut.

Fig. 14 is a front perspective view showing the vertical pencil inlet V1 and the pencil guide opening 3f that make up the pencil variable entrance A when sharpening to the pencil core thickness of S1 shown in A position in Fig. 5. FIG.

By reversing the top and bottom in that plane and configuring the pencil guide opening 3 f and the vertical pencil entrance V 1 to make the pencil variable entrance, cutting can be performed to the S7 core tip thickness shown in the G position in Fig. 5.

Fig. 15 shows the pencil guide at the position shown in Fig. 14 □ 3 g is turned upside down with the vertical line as the axis, and pencils of different thickness are sharpened as shown at S in Fig. FIG. 3 is a front perspective view showing a state where a vertically variable pencil entrance V1 and a pencil guide slot 3g constitute a variable pencil entrance when the cutting angle is reduced to about 30 °.

If the top and bottom are reversed in the plane and the pencil guide opening 3 and the vertically long pencil entrance V 1 constitute a variable pencil entrance, a pencil of a different thickness can be used as the core of S 3 shown at the C position in Fig. 5. It can be cut to a point thickness.

In Figures 14 and 15, the circles at the two pencil entrances are independent of each other. However, a part of the circular entrance may be overlapped. It is also possible to design square, elliptical, polygonal and other shapes.

Sixth embodiment:

The appearance, shape, size, material, and relative position of each part of the cutting tool of the present invention can be designed in a wide variety of ways, and the above description is not intended to limit the present invention. .

It is also possible to put the pencil sharpener of the present invention in a pencil shavings storage case 7 of various materials and shapes. It is also possible to form it with a door-like door 8, an example of which is shown in FIG. 16 as a sixth embodiment.

Seventh embodiment:

A frame 9 made of metal, plastic, or other suitable material, preferably a material having elasticity is used as a mask on the front of the main body 1 having the pencil insertion V 1, and is pivotally supported and freely rotatable. May be done. It is also possible to move up and down. This is shown in Figure 17.

A rod guide opening having a width that allows insertion of a rod such as a pencil to be cut must be formed in the frame of the frame. A pivot that can be freely rotated and fixed can be loosened / fastened using the thumbscrew 10 shown in Fig. 17 or a screw and a screw that can be rotated without using a thumbscrew. It can be carried out by a shaft support in combination with the stock 11 or any other method.

Tip control means:

An example of a tip (core tip) control means, which is a selective component and can be commonly applied to all the above-described embodiments, will be described. Fig. 18 shows the mounting of the mask 3 shown in Fig. 1 (b) on the front of the cutting tool body 1 shown in Fig. 1 (a), and the vicinity of the A position of the vertical rod inlet VI and the horizontal rod guide opening 3a. FIG. 5 is a view showing a state in which the rods are set so as to intersect with each other and then cut along the axis of the rod insertion hole W.

In FIG. 18 (a), a solid line overlaps a diagram in which a hexagonal pencil has been inserted and cut from the rod guide port 3a of the mask 3 set near the position A.

In the illustrated hexagonal pencil, the cutting angle with respect to the cutting blade 2 is regulated at points “j” and “k”, and the pencil is cut along the cutting edge line H—H. If the tip control means 5 does not exist, the tip of this pencil is sharpened to the point "m", and a long tip with a sharp tip is obtained.

The tip control means 5 to be described here is disposed in front of the pencil lead to be tip-controlled. The material may be metal, ceramic, plastic, etc., and can be selected to any thickness and shape. Specifically, the thickness may be such that it goes under the blade. Further, it may be formed integrally with the cutting tool body 1.

When the tip control means 5 having the shape of the abutting surface `` nj '' as shown in Fig. 18 (b) is arranged at the position shown in Fig. 18 (a), the "At this point, the pencil part that touches the fulcrum" j "is thinner than the gap determined by the distance between the cutting edge H — H and the fulcrum" j ". Therefore, since the pencil can still be advanced, the cutting is continued and the pencil is sharpened to a round tip shape according to the contact surface shape “n”.

If the curvature of the arc of the contact surface shape “n” is further increased, It has a rounded shape and can be used as a cutting edge for eyebrows and lipstick.

When the contact surface shape “P” shown in Fig. 18 (c) is given, the core tip has a stepped sharp shape. In other words, a relatively sharp tapered tip is further provided in the cut-off relatively sharp tapered tip. In the normal writing mode, the pencil is held at an angle instead of vertically. In view of this fact, such a relatively steep taper tip angle can make the tip parallel to the paper when the pencil is held at an angle, and therefore, writing that facilitates writing This will give an easy core shape.

When the contact surface shape "q" shown in Fig. 18 (d) is given, the core tip becomes a broken shape and the initial core tip thickness does not change much over a long time during use. Gives the advantage.

The tip control means 5 can change the cutting shape of the pencil tip so that it can be replaced with a different shape such as, for example, shapes ηη ”, 、 ρ”, and “q”.

FIGS. 18 (e), (f), (g) and (h) are examples of other examples of different shapes. Fig. 18 (e) is a cross section showing a partial structure of the main body 1 suitable for using the tip control means 5f, 5g, 5h as an alternative to the tip control means 5 of Fig. 18 (a). FIG.

These tip control means 5 f, 5 g, and 5 h are attached to those having no tip control means 5. The attachment is performed by fitting it into the upper left end i toward the body 1.

The tip control means 5 f, 5 g, and 5 h correspond to the click top s, It has a contact surface t with the pencil tip. By changing the shape of the contact surface t, it is possible to change the shape of the shaved core.

Fig. 18 (g) shows an example of bending the contact surface t to t'.As an example for changing the shape of the core tip, a concave or arbitrary shaped end face is formed on the surface X of the contact surface t. Fig. 18 (h) shows an example of the provision.

The position of the fulcrum "j" is illustrated about three points below the cutting edge line H-H. If this dimension is increased, the length of the fulcrum Γj "and the center becomes larger, and the length due to the change in angle Since the difference between the two becomes larger, it becomes easier to select the core thickness.

This is particularly important when applying the present invention to pencil-type cosmetics.

In Fig. 18 (a), the mask 3 is set to the G position, the round shaft pencil is inserted, and the figure after cutting is overlaid with a dotted line. In this case, when the tip of the round shaft reaches the “r” point, it becomes a shape fitted between the cutting edge line H—H and the fulcrum “j”, and the “r” point where the tip is located is the tip. Since it does not reach the position of the control means 5 far, the tip is kept sharp.

Eighth embodiment:

FIG. 19 is a perspective plan view of the eighth embodiment of the present invention, and shows a cam, a pencil sharpener body 1 and a pencil guide when shaping to a pencil lead thickness of T 1 shown at J in FIG. 23. Shows the position relative to mouth 18. FIG. 20 is a front perspective view corresponding to FIG. 19, and shows a state in which a vertically variable pencil inlet 1 and a pencil guide opening 18 constitute a variable pencil inlet. T 1 shown in Fig. 23 has a thick core, T 2 has a slightly thick core, T 3 has a medium thick core, and T 4 has a medium thin core T5 is a thin tip, Τ6 is a sharp tip, and Τ7 is a sharpened lj angle of about 35 ° for a colored pencil.

T is the position obtained by subtracting the pencil tip length of 0 when the designed pencil tip is sharpened to a sharp cutting angle from the pencil tip length of J when sharpened to the designed minimum cutting angle, that is, tip control. The position where the core contact surface of Means 5 should be arranged is shown.

The illustrated pencil tips such as J, K, L, M, and N cannot be sharpened because they come into contact with the fixed tip control means 5. However, when the adjustment tip (rotation mechanism) 17 in Fig. 19 is rotated from J to K, L, M, N, 0, and P in this order, The insertion angle of the pencil axis with respect to the blade gradually increases, and the cutting angle gradually increases. As the cutting angle increases, the tip gradually becomes shorter from the fixed tip control means 5 side to the pencil insertion V1 side, and the part where the tip comes into contact with the tip control means 5 becomes thinner. So that the core gradually becomes thinner. The illustrated zero-point tip does not come into contact with the tip control means 5 and is sharpened, and the illustrated P is sharpened to a cutting angle of about 35 for the same reason.

That is, in the first embodiment, by moving the horizontal pencil guide □ 3a for guiding the lead brush to an arbitrary position of the vertically long entrance V 1 to the left and right, it intersects with the vertically long entrance V 1 and the pencil variable entrance. By the adjusting means constituting the above, the insertion angle of the pencil axis with respect to the cutting blade was made variable, and the tip thickness could be adjusted steplessly from S1 to S4. At the same time, it was possible to adjust the pencil cutting angle from D to G steplessly with the sharpened tip of the pencil. However, in this eighth embodiment, the adjustment cam was adjusted. 17, Panel 19, Rotating shaft 16 The rotating mechanism of the cutting tool body 1 rotates the main body to fix the pencil entry V 1 at an arbitrary position at the pencil guide port 1 8 A variable pencil inlet is formed by adjusting means to adjust the insertion angle of the pencil axis with respect to the cutting blade, and the tip thickness can be adjusted steplessly from T1 to T5. At the same time, the cutting angle can be adjusted from T6 to T7 with a sharp core.

The illustrated pencil tips such as J, K, L, M, and N contact the tip control means 5 and cannot be sharpened. However, the abutting tip retreats from the fixed tip control means 5 side toward the lead pen entrance V1 side gradually as the pencil cutting angle increases, so that the tip becomes gradually thinner. The exemplified zero point does not come into contact with the tip control means 5 so that it can be sharply cut. The exemplified P position also has a cutting angle of about 35 for the same reason. It will sharpen sharply.

If the stepless adjustment is set stepwise, for example, it is possible to sharpen the pencil in a pattern as illustrated in FIG.

FIG. 21 shows the relative positions of the adjusting cam 17, the main body 1, and the pencil guide port 18 when the pencil is sharpened at a cutting angle of about 35 ° at the P position shown in FIG. 23. FIG. 22 is a front perspective view in the state shown in FIG. 21.

Further, the cutting tool 1 of the present invention can be put in a shavings storage case of various shapes.

Ninth embodiment:

FIG. 24 is a diagram showing a ninth embodiment of the present invention, wherein FIG. A rod (pencil) inlet 18 'is provided on the side, and a cylindrical rod shavings storage (upper half) with three fitting notches R at its lower end (upper half) Cases X and (b) As shown in the figure, a cylindrical rod shavings storage case (lower half) containing a power unit 1 inside and having an opening V 1 ′ on the side facing the rod inlet V 1 (lower half) Case X ₂ And are fitted.

By relatively rotating moving both cases X, the chestnut Kkusuto class tap action by one fitting projection Q provided on three Hamagono Tutsi R and the case X ₂ provided in, the rod entrance The overlapping position of V1 and rod entry 18 'is changed. (C), (d), and (e) show the positions of the local communication ports selectively formed by this. (F) is a plan sectional view showing (d) cut along the line bb. Tenth embodiment:

FIG. 25 is a view showing a tenth embodiment of the present invention. As shown in FIG. 25 (a), a plurality of rods □ Z 1, Z 2, Z 3 are provided on the side surface, and Cylindrical rod body with corresponding mating notches R 1, R 2, R 3 Shavings storage (upper half) Case and cutter unit 1 inside as shown in (b), and BotaiIri 〇_V 1 side to open 〇_V 1 'to provided a cylindrical rod shavings housing facing (lower half) causes engagement and a case Y _2.

By relatively rotating moving both Hamagono pitch R l provided on the case, by one of the fitting projections CU Koyoru chestnut Kkusuto-up action provided in the R 2, R 3 and the case Y ₂ The overlapping position of the rod inlet V 1 and the rod inlet 18 ′ is changed. Stations selectively formed by this (C), (d) and (e) show the location of the partial communication port. (: F) is a plan sectional view showing (d) cut along line c-c. Industrial applicability

The variable cutting tool at the tip of the rod according to the present invention is capable of reducing the cutting angle at the tip of the rod, the cutting thickness at the tip, and the cutting shape at the Z or the tip with high accuracy and selectivity while having a relatively simple structure and low cost. Can be set variably.

In addition, the object to be cut is not limited to a pencil. A cylindrical rod or hexagonal rod consisting of a main body core and a concentric outer jacket that surrounds it, such as a pencil-type eraser, pencil-type eyebrows (cosmetics), and pencil-type color markers. , Polygonal rod-shaped, or rod-shaped body that does not have a jacket and consists essentially of the body core, and can be applied to a wide range of rod bodies that need to be cut at the time of use It is.

Claims

The scope of the claims

1. A rod cutting tool having a cutter unit (1) including a rod insertion hole (W) and a single cutting blade (2) having a part of a cutting edge exposed in the insertion hole.

A rotary mechanism (17) for the cutter unit (1) and a means for forming a variable rod body inlet by means of a fixed rod body inlet (18) arranged in a rod shavings storage case; ,

Fixed rod tip control means (5) is disposed at any position in the cutter unit at which the thickness of the rod tip can be controlled by contacting the tip of the rod being cut. Variable rod tip cutting tool.

2. A rod cutting tool having a cutter unit (1) including a rod insertion hole (W) and a single cutting blade (2) having a part of a blade exposed in the insertion hole.

By providing a mask means (3b, 3 ', 3 ", 8, 9 etc.) capable of forming a local communication port with respect to the rod inlet (V,) of the cutter unit (1). That the rod variable inlet forming means is disposed,

3. In a rod cutting tool having a cutter unit (1) including a rod insertion hole (W) and a single cutting blade (2) having a part of a cutting edge exposed in the insertion hole,

A pair of rod turnings storage case (X,, X ₂₎ in one wall surface of, A variable rod inlet forming means provided with a fixed rod inlet (18 ') capable of selectively forming a local communication port with respect to the rod inlet (V,) of the cutter unit; When,

Fixed rod tip control means (5) is provided at an arbitrary position in the cutter unit where the thickness of the rod tip can be controlled by contacting the tip of the rod being cut; Variable body cutting tool.

4. A rod cutting tool having a cutter unit (1) including a rod insertion hole (W) and a single cutting blade (2) having a part of a cutting edge exposed in the insertion hole.

A plurality of fixed rod body inlets capable of forming local communication ports having different relative positions with respect to the rod inlet (V,) of the cutter unit in one of the pair of rod body shavings storage cases, Y ₂ ). and it has disposed rod variable inlet forming means by disposing the _{(Z,, Z 2, Z} 3 , etc.), the thickness of the rod tip in contact with the rod tip during cutting in the Kattayuni' DOO The variable rod tip cutting tool is characterized in that a fixed rod tip control means (5) is provided at an arbitrary position where the height can be controlled.