CN1144733A

CN1144733A - Corner cutter

Info

Publication number: CN1144733A
Application number: CN96111823A
Authority: CN
Inventors: 森忠三
Original assignee: CARL Manufacturing Co Ltd
Current assignee: CARL Manufacturing Co Ltd
Priority date: 1995-09-05
Filing date: 1996-08-19
Publication date: 1997-03-12
Also published as: KR970014955A; DE69605991T2; JPH0970793A; JP3627073B2; DE69605991D1; EP0761394A1; EP0761394B1; TW315786U

Abstract

In a corner cutter of the invention, a movable blades respectively belonging to a circular cutting edge for cutting paper corners and a straight cutting edge for cutting the corner sides are inserted into movable blade inserting holes arranged on a stationary blade. The paper corner inserted into a slot is cut among the fixed cutting edge, the circular cutting edge and the straight cutting edge. Consequently, when the straight cutting edge is used for cutting corners, the circular cutting edge and the straight cutting edge also cut corners; and the corner is cut in a tensioned state between the circular cutting edge and the straight cutting edge, as if the corner sides are fixed by the straight cutting edge; thus the the phenomena that the paper can not be clamped, the operation becomes easy and irregular arrangement of the cut corners is avoided.

Description

Dehorner

The present invention relates to a kind of one jiao of dehorner that is cut into circle with page.

In general, usually have and to be cut into circular situation to the angle of desiring the page (as " loose leaf paper " (Loose Leaf), a kind of trade name) of binding in the assembling machine.In this case, owing to there is not suitable dehorner, just have to the paper angle is cut into circle with common scissors.The angle majority of the loose leaf paper that obtains on market is circular, as shown in figure 10, they normally by the cutting knife 3 of a semicircle to pressing down, and cut a stacker and open 1 angle 4 and be cut into circular.

In above-mentioned common method, when using the angle of scissor cut page, thereby can not make the circle of corner cut or the most suitable paper angle that cuts that makes of circular shape that good surface appearance is arranged, and can not once be cut into circle to a plurality of paper angle effectively.And when using shown in Figure 10 semicircle cutting knife 3, although circle that is cut into or circular arc are neat, but to non-adult, children for example, may damage, thereby this paper is not suitable for as a kind of stationery, in addition, when this dehorner being arranged to be that it can become very expensive again when adopting mechanical means to depress cutting knife 3.

The object of the present invention is to provide a kind of dehorner, it can be cut into fixing circle to the paper angle, and in addition, as a kind of business-like machine, its operation is very simple, and low price.

In order to address the above problem, according to claim 1, dehorner of the present invention comprises a fixed blade and a movable blades.Fixed blade has a slit that the paper of desire cutting can be inserted, and with a hole vertical with slit, movable blades just is inserted in this hole.Formed a counteredge in the crossing place of above-mentioned slit and movable blades insertion hole wherein.The bottom of movable blades is provided with a round sword and a straight sword, and a jiao of being used for paper of circle sword cuts, and becomes rounded shapes; Straight sword then is used for a paper angle and is cut into straight line, and the radius that makes round sword is greater than any one radius of a circle tangent with the right-angle side of paper.

According to claim 2 of the present invention, the round sword of movable blades and straight sword are all recessed respectively to fixed blade.

According to claim 3 of the present invention, all be provided with targeting part at the round sword of above-mentioned movable blades and the both sides of straight sword.

According to claim 1, can realize the present invention as described below.As shown in Figure 1, dehorner comprises a fixed blade 5 and a movable blades 7, and fixed blade 5 is provided with one can make paper insert so that be cut into the slit 6 of round, and the patchhole 8 and the slit 6 of movable blades vertically are provided with.Form a fixed blade 9 in the intersection of slit 6 and movable blades patchhole 8.As shown in Figure 2, the bottom of the movable blades 7 in wanting patchhole 8 is provided with round sword 10 and straight sword 11, the angle 101 that circle sword 10 is used to cut paper 1, and the trimming 102 that straight sword 11 is used to cut paper 1, and the radius R of circle sword 10 is done than big with tangent any one the radius of a circle R1 (referring to Figure 11) of the right-angle side of paper.

Accessory rights requires the characteristics of 2 dehorners of the present invention that obtain to be: the round sword 10 that is provided with in the bottom of movable blades 7 and directly the configuration of sword 11 all be recessed to fixed blade 9.

Accessory rights requires the characteristics of 3 dehorners of the present invention that obtain to be: be respectively equipped with targeting part 12 on the both sides of the concave edge of above-mentioned round sword 10 and straight sword 11.

Fig. 1 is the front view of the major part of the movable blades in the embodiments of the invention;

Fig. 2 is the bottom view of Fig. 1;

Fig. 3 is the cutaway view along the major part of the A-A line of Fig. 1;

Fig. 4 is the plane of the retained part that is provided with on the fixed blade;

Fig. 5 is the perspective view of the dehorner of disconnection;

Fig. 6 is the vertical sectional view of the dehorner that assembles;

Fig. 7 is the vertical sectional view along the B-B line of Fig. 6;

Fig. 8 is the punching blade vertical cross section partly that expression provides with dehorner;

Fig. 9 is the bottom view of the base plate among Fig. 5;

Figure 10 is the perspective view of prior art;

Figure 11 is the general remark of corner cut; And

Figure 12 is the general remark of corner cut.

Explain one embodiment of the present of invention now.At first, be that the basis illustrates dehorner all sidedly with Fig. 5.Movable blades 7 is fixed on the member as described below, and in order to operant activity blade 7, make it is an integral body to the retained part 15 that presses down to this member and in order to the spring receiver 16 and that receives spring 17.The one spring retained part 22 that is used for fixing spring 17 protrudes from the upper surface of fixed blade 5, and movable blades patchhole 8 passes slit 6 in such a way, and promptly it vertically intersects with slit 6.When spring 17 being inserted between fixed blade 5 and the spring receiver 16, by retained part 15 being stretched into the hole 14 on the top cover 13 and top cover 13 being linked to each other with fixed blade 5, and top cover 13 is closed, spring 17 just is fixed between fixed blade 5 and the spring receiver 16.When the retained part 15 that promotes to stretch out from the hole 14 that is arranged on the top cover 13 when pressing down, the movable blades 7 that is depressed can be upspring by spring 17.

The targeting part 19 at the angle 101 that is used for guiding paper 1 is housed on base plate 18, and slits 6 are inserted along targeting part 19 in the angle 101 by making paper 1, and the limit 102 that makes paper is in suitable position with respect to the fixed blade 9 (Fig. 1) of fixed blade 5.Label 20 is the holes in order to the eliminating waste cut materials, and waste cut materials can be discharged from this hole.Label 21 is lids, and it can prevent when depressing movable blades 7 that hand from touching blade.Base plate 18 is contained in the back side of fixed blade 5 and can dismantles.

Fig. 6 and Fig. 7 are the vertical sectional view of the dehorner that assembles.Shown in Fig. 6 and 7, on top cover 13 covers upper surface 181 (Fig. 5) at base plate 18, thereby when upper surface 181 is contacted with the bottom of top cover 13, owing to the step of targeting part 19 has formed a space 191, this space 191 is on the line with the slit 6 that is on the fixed blade 5, so paper 1 can guide insertion slit 6 by targeting part 19.

Fig. 1 and Fig. 2 show the thin portion of the major part of movable blades 7 shown in Figure 5, and Fig. 2 shows the bottom of movable blades 7, and the straight sword 11 that is used for the angle of paper 1 is cut into circular round sword 10 and the trimming 102 that is used to cut paper 1 is housed in the bottom of movable blades 7.Between the center of circle sword 10 and the straight sword 11 certain width is arranged, this width is set for made paper 1 edge be arranged on that targeting part 19 on the base plate 18 is put with respect to the angle 101 of paper 1 and when inserting slit 6, make the arm of angle 102 of paper 1 stretch out straight sword 11.In addition, as shown in figure 11, the radius of curvature R of the round sword 10 of blade is specified to radius R 1 greater than one of circle of cutting with the angle 101 of paper 1.On the other hand, the straight sword 11 in the present embodiment is linear.That is to say, by making R＞R1, circle sword 10 intersects at a P1 with angle 107, and as shown in Figure 1 as the front view of movable blades 7, by making round sword 10 recessed to fixed blade 9 with the configuration of straight sword 11, make paper 1 as shown in Figure 12 from the intersection point P1 (just being called " P1 " later on) that between circle sword 10 and angle 101, forms inwardly as being cut of arrow, this cutting just as the scissors paper-cut carry out.Like this, just can avoid filling up between angle 101 movable blades 7 and the fixed blade 5, and guarantee, thereby make operation lighter from intersection point P1 cutting paper by paper 1 is inwardly cut as the arrow from a P1.

In addition, as shown in Figure 2 because the arm of angle 102 stretches out from straight sword 11, with circle sword 10 from a P1 to the process at the angle 101 of intersection point P2 ' (just being called " P2 ' " later on) cutting paper 1, straight sword 11 does not also begin cutting angle 101, therefore broaching load at this moment diminishes.When the cutting of circle sword 10 during to P2 ' progress, straight sword 11 begins to cut the arm of angle 102 from the intersection point P2 (being called " P2 " later on) that forms between straight sword 11 and angle 101.Therefore, the cutting of justifying sword 10 and straight sword 11 is carried out simultaneously.That is to say, in process with the space between the circle sword 10 cutting P2 ', the space between the straight sword 11 cutting P2, this will make straight sword 11 push down the arm of angle 102 of paper 1 (being actually cutting simultaneously).Thereby make round sword 10 can cut space between the P2 ' safely and reliably.

In addition, in the present embodiment, circle sword 10 is to be the semicircle of radius and linear with straight sword 11 with R, because targeting part 12 can proof strength, the size of the T shown in Fig. 2 can be established as much as possible for a short time.Therefore, P2 can arrive P1 during cutting, pushes down the arm of angle 101 and also can begin (being actually cutting simultaneously) as soon as possible, and prevent the arm of angle 102 slippages simultaneously, and circle sword 10 can be more reliably with radius R cutting paper angle.

In addition, though the shape of straight sword 11 is linear, but as long as circle sword 10 and straight sword 11 allow, size by making T is as much as possible little, just make straight sword 11 approach a center of circle and the arc (as shown in Figure 2) that concentric O1 is identical, radius is R ' of justifying sword 10, thereby make P2 near P1, can push down angle 101 (be actually cutting) simultaneously so earlier, can make thus by circle sword 10 is that the cutting carried out of radius is more guaranteed with R.In addition, can also be with bigger radius R " form straight sword 11, its center of circle moves to O2 from the center of circle O1 of the circular arc of circle sword 10.In this case, just from being that the center of circle, R ' be that the circular arc of radius becomes with O2 are the center of circle with O1, R " is the circular arc of radius to the shape of the patchhole 8 of movable blades shown in Figure 4.

Like this, the angle 101 of paper 1 is just by

circle sword

10 and 11 the two cutting of straight sword, thereby prevented the arm of angle 102 slippages that are being cut, and angle 101 is cut under the state of tensioning.Therefore, only compare in situation about for example being cut between round sword 10 and the fixed blade 9 with paper, fixed blade 9 respectively and the gap precision of circle sword 10 and straight 11 permissions of sword can loosen 1/2 than general case.Therefore, the ability to work of justifying sword 10, straight sword 11 and fixed blade 9 all is improved.

Both sides at the concave edge of circle sword 10 and straight sword 11 all are provided with targeting part 12, even rising under the elastic force effect that makes movable blades 7 at spring 17 when the highest, the length of targeting part 12 also is suitable for keeping crossing fixed blade.Therefore, active blade 10 and fixed blade 11 can successfully be crossed slit 6, and improved and fixed blade 9 between gap precision, simultaneously, as shown in Figure 9, the positioning accuracy of 1 pair of round sword 10 of paper has more been improved during by targeting part 19 guiding that are arranged on the chassis 18 in the angle 101 of the paper 1 in inserting slit 6.Therefore, having avoided is that the angle 101 of paper 1 of circle cutting of R is irregular with the radius.

Fig. 4 is the plane of the spring retained part 22 of fixed blade 5, and the shape of movable blades patchhole 8 is identical with movable blades 7.Fig. 8 shows the situation that card punch 23 is provided with movable blades 7, in this case, for example as shown in figure 12, goes out pattern 103 when angle 101 being cut into circle.Under the situation that this card punch 23 is housed, except movable blades patchhole 8, it is identical and vertically pass the hole of slit 6 also to be provided with a shape and pattern 103 on the movable blades 5.

To explain the function of so forming of the present invention below.As shown in Figure 3, be cut owing to insert between the straight sword 11 of the arm of angle 102 that the angle 101 of the paper 1 of slit 6 is suitable at fixed blade 5, the round sword 10 and being used to that is used to cut the angle of paper 1 cuts paper 1, wherein said round sword and straight sword are located at the bottom of the movable blades 7 that passes hole 8, in the process with straight sword 11 cutting angles 101, circle sword 10 and straight sword 11 can both cutting angles 101.Like this, the two cutting angle 101 simultaneously of circle sword 10 and straight sword 11 thus when with circle sword 10 during with given radius cutting angle 101, makes angle 101 at circle sword 10 with directly be in tensioning state between the sword 11, just looks like to fix the arm of angle 102 by straight sword 11.

With circle sword 10 cutting angles 101 time, because the radius R of circle sword 10 is done greater than the radius of a circle R1 (referring to Figure 11) tangent with the right-angle side at angle 101, angle 101 can not bitten between circle sword 10 and fixed blade 9, guarantee that therefore circle sword 10 is at P1 place cutting angle 101.

In addition, movable blades patchhole 8 and slit 6 lateral cross vertically that is arranged on the fixed blade 5, thereby in slit 6 and movable blades patchhole 8 places of intersecting vertically formation fixed blade 9, and cut with the angle 101 that same radius will insert the stacked paper 1 of slit 6.

Owing to made the round sword 10 of movable blades 7 recessed to fixed blade 9 with the configuration of straight sword 11, when movable blades 7 when pressing down, shown in the dotted line among Fig. 1, the angle of paper 1 fixed blade 9 respectively and the intersection point P1 ' and the P1 that form between circle sword 10 and the straight sword 11 " locate to be cut; just as scissors is operated easily; and as shown in figure 12, along the direction of arrow similarly from both sides cutting angle 101, thereby the position of paper 1 when cutting can not moved.

As shown in Figure 2, because the concave edge both sides of circle sword 10 and straight sword 11 all are provided with targeting part 12, the arm of angle 102 can be with respect to circle sword 10 location.In addition, as shown in Figure 6, because the elastic force of spring 17 and when obviously lifting, targeting part 12 can utilize it still to stay length in the fixed blade 9 when movable blades 7, can be maintained fixed sword 9 thus exactly respectively and the gap between circle sword and the straight sword 11, make cutting good.

As mentioned above, the present invention who obtains according to detailed description based on claim 1, make the movable blades that has the straight sword of the arm of angle that is used to cut the round sword at paper angle and is used to cut paper in the bottom can insert the movable blades patchhole, and can cut and insert the paper angle in the slit between fixed blade, circle sword and the straight sword.In the process with straight sword cutting paper angle, circle sword and straight sword all cut the paper angle, make the paper angle be in tensioning state thus between circle sword and straight sword, and it is the same to just look like that straight sword is pushed down the arm of angle, and the paper angle is cut with a given radius.Therefore, paper can not bitten, and has guaranteed easy operating, and the misaligned phenomenon of corner cut can not occur.

In addition, because the movable blades patchhole to be provided with horizontal direction with meeting at right angle, intersection at slit and active blade forms fixed blade, and the stacked sheet angle of inserting slit with same radius by perpendicular cuts, so production efficiency is higher, even and cut many paper that stack and do not worry that also paper can be shifted, avoided the irregular of cutting back paper angle arrangement.

In addition, because the radius R of circle sword is greater than the radius of a circle tangent with the limit at angle, and the paper angle is clamped between fixed blade and circle sword, guaranteeing the cutting at paper angle, thereby need not a paper angle that fills up is taken out, and its operation as business machine is become be more prone to, make the cutting position at paper angle always very stable, thereby eliminated the irregular of cutting back paper angle arrangement.

In addition, according to the present invention based on the claim 2 that from describe in detail, obtains, because the round sword that will be arranged on the movable blades bottom is done recessedly to fixed blade with the shape of straight sword, and can be as using scissors to cut the paper angle like a cork, so dehorner is easy to handle as a kind of business machine, and this dehorner can similarly cut the paper angle from both sides, and this has guaranteed the location at paper angle, can not be moved, to eliminate the misaligned of paper angle, cutting back.

According to the present invention based on the claim 3 that from describe in detail, obtains, because targeting part is all established in the both sides of circle sword and straight sword, and make straight sword with respect to circle sword location, the positioning accuracy and the positioning accuracy that have improved cutting angle are stable, thereby have eliminated the misaligned of paper angle, cutting back.Because simple in structure, dehorner becomes a kind of cheap commercial apparatus, as long as paper is inserted slit and just enough to pressing down handle, this makes it be easy to as business machine handle.

Claims

1. dehorner comprises:

A fixed blade;

A movable blades;

Described fixed blade is provided with a slit and a movable blades patchhole that intersects vertically with slit;

A fixed blade, it forms at slit and movable blades patchhole intersection;

Be arranged on a round sword and a straight sword on the movable blades bottom, do the radius of circle sword greater than the radius of a circle tangent with right-angle side.

2. dehorner according to claim 1 is characterized by, and the round sword and the straight cutlery that are arranged on the movable blades bottom have recessed shape to fixed blade.

3. dehorner according to claim 1 and 2 is characterized by, and is equipped with targeting part on the both sides of the circle sword and the concave edge of straight sword.