CN1781636A - Cutting tool for stick material - Google Patents
Cutting tool for stick material Download PDFInfo
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- CN1781636A CN1781636A CN 200410097979 CN200410097979A CN1781636A CN 1781636 A CN1781636 A CN 1781636A CN 200410097979 CN200410097979 CN 200410097979 CN 200410097979 A CN200410097979 A CN 200410097979A CN 1781636 A CN1781636 A CN 1781636A
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Abstract
The cutting tool for stick material includes one U-shaped edge including the first edge and the second edge superposed each other, one operating lever, and one link rod mechanism. After some rod is inserted into the U-shaped edge and the operating lever is pushed downward, the link rod mechanism will make the first edge and the second edge rotate oppositely to cut down the rod. The link rod mechanism has such structure that when the operating lever is turned in some angle, the second edge is turned in a relatively smaller angle while the first edge is fixed. In addition, there is one auxiliary driving mechanism set between the first edge and the operating lever.
Description
Technical field
The invention relates to the hand-operated tools that bars such as cutting off reinforcing bar is used, You Zhike alleviate when cutting off bar the cutting tool for stick material of operating physical force of necessary operating lever.
Background technology
Always, reinforcing bar hand off instrument comprises the pedestal that possesses fixed handle, is installed on the fixed blade body and the active blade body of this pedestal, is installed in the operating lever of pedestal, and the operating lever connecting rod that the active blade body rotated when rotating.
In known cutting tool for stick material shown in Figure 6, fixed blade body 1 and active blade body 2 are to prop up in pedestal 4 via fulcrum 3 pivots.Though fixed blade body 1 is fixed into and can not rotates via fixed mechanism 1b, active blade body 2 is to rotate freely the earth's axis to prop up in fulcrum 3.Fixed blade body 1 that overlaps each other on fulcrum and active blade body 2 have respectively the formed U-shaped sword of the U-shaped ditch 1a by same shape, 2a, shown in Fig. 6 (A), at U-shaped sword 1a, the 2a enable possition that communicates aligned with each other is inserted this U-shaped sword 1a to reinforcing bar 5,2a, promptly become shown in Fig. 6 (B), active blade body 2 promptly rotates in rotational angle θ C scope, makes U-shaped sword 1a, 2a is offset to each other obstructed closed position fully from the enable possition, reinforcing bar 5 is cut off.
For rotating active blade body 2, operating lever 6 is installed in pedestal 4 via pivot 7, and this operating lever 6 is the center with pivot 7, with erectility roughly, work angle θ scope between starting point S and terminal point E is back and forth rotated freely, is provided with linkage 8 between operating lever 6 and active blade body 2.Linkage 8 is to utilize two ends respectively by pin 9a, 9b is articulated in the extension arm 2b of active blade body 2 and the connecting rod 9 of operating lever 6 constitutes, when operating lever 6 promotes along pushing direction F, active blade body 2 f clockwise rotates, and operating lever 6 is when rotating along the direction R that reverses, and 2 anticlockwise r of stream movable blade body rotate.
The structure of linkage 8 is that the work angle θ scope till operating lever 6 is from starting point S to terminal point E when pressing pushing direction F promotion, makes active blade body 2 rotate in the scope of such rotation angle θ C, and reinforcing bar 5 is cut off fully.The relation of the rotational angle θ of the work angle θ of these operating levers 6 and active blade body 2, look the pin 9a of connecting rod 9, the 9b position, and pivot 7 positions of operating lever 6 and deciding, utilize the promotion of operating lever 6, connecting rod 9 promptly spurs on by pivot 7 and the corresponding circular arc of pin 9b radius R that tie line defines.
Yet, the U-shaped sword 1a of the visual reinforcing bar diameter of these parting tools pre-determined constant sword body 1 and active blade body 2, the 2a size, reinforcing bar φ 16mm time spent for example, form the about 17-18mm of U-shaped tread degree, and the reinforcing bar φ 13mm time spent forms the about 14-15mm of U-shaped tread degree, again the reinforcing bar φ 10mm time spent, form the about 11-12mm of U-shaped tread degree.So, in known parting tool, measuring the U-shaped sword 1a that utilizes fixed blade body 1 and active blade body 2,2a makes the aperture (mm) of sword, with the relation of cutting off the necessary sword closing force of reinforcing bar (KN), by result shown in Figure 7 as can be known.
That is during reinforcing bar φ 16mm, the U-shaped sword 1a of fixed blade body 1 and active blade body 2,1b, when the enable possition that communicates aligned with each other, the about 17-18mm of aperture size of sword is when obstructed fully each other closed position, be closed to 0mm, then utilize operating lever to promote to rotate active blade body 2, till the sword aperture was reduced to about 6mm, reinforcing bar was promptly accused cut-out.At this moment, cut off the closing force of reinforcing bar institute required activity sword body 2, must about 84KN (about 8600 kilograms) when spike.
During reinforcing bar φ 13mm, the U-shaped sword 1a of fixed blade body 1 and active blade body 2,1b, utilize operating lever to promote to rotate active blade body 2, till the sword aperture 0mm, when the sword aperture was reduced to 3mm, reinforcing bar was promptly accused cut-out when the about 14-15mm of sword aperture size was closed into closing position during from the enable possition.At this moment, cut off necessary active blade body 2 closing forces of reinforcing bar, must about 50KN (about 5100 kilograms) when spike.
During reinforcing bar φ 10mm, the U-shaped sword 1a of fixed blade body 1 and active blade body 2,1b, utilize operating lever to promote to rotate active blade body 2, till the sword aperture 0mm, when the sword aperture was reduced to about 2mm, reinforcing bar was promptly accused cut-out when the about 11-12mm of sword aperture size was closed into closing position during from the enable possition.At this moment, cut off necessary active blade body 2 closing forces of reinforcing bar, must about 30KN (about 3060 kilograms) when spike.
Above-mentioned numerical value is the closing force (KN) of active blade body 2, promote operating lever 6 operations necessary power, though can be because of being that operating lever 6 length of fulcrum alleviate with pivot 7, suppose to use operating lever 6 total lengths to be 1000mm, work angle θ is the general instrument of 90 degree, ask the lever power when 16mm cuts off in the reinforcing bar, calculating lever operated amount front end is 1400mm, the minimum necessary stroke of application point was 16mm when reinforcing bar cut off, even do not omit the transmission efficiency of strength, wishing to get the lever power of the necessary sword body of 16mm closing force 84KN (about 8600 kilograms) in the aforementioned cut-out reinforcing bar, then is 0.96KN (about 98 kilograms) (i.e. 16 * 84 ÷ 1400=0.96KN).Therefore, the tool-user of common muscle power is extremely excessive work.
The background technology document is clear 61-29382 communique for the Japan Patent spy opens.
Summary of the invention
The object of the present invention is to provide a kind of cutting tool for stick material that alleviates the operating physical force of operating lever, be provided with the first sword body that is equivalent to known technology fixed blade body, the second sword body that is equivalent to the active blade body, utilize the first sword body and the second sword body to relatively rotate in the rotational angle θ of sword closure C scope, bars such as reinforcing bar are cut off, only find to compare with known technology based on following structure, behaviour's power of operating lever can especially alleviate.
Aforementioned known technology, work angle θ scope till operating lever is pushed to terminal point from starting point, be closed sword, rotate in the rotational angle θ of necessity C scope, since only active blade body is on one side carried out, as shown in Figure 7, in the initial stage of reinforcing bar cut-out, must powerful operating physical force be arranged to operating lever, the closing force that could obtain to peak fast.
Relatively, operating lever of the present invention is the promotion stroke range till origin-to-destination, be made of work angle θ equally with background technology, yet sword will be in the rotation of the rotational angle θ C scope till from the enable possition to the closed position, the second sword body only can be rotated in the aspect in addition.In other words, the second sword body, only rotates at rotational angle θ C2 (θ C2＜θ C) when work angle θ scope promotes at operating lever.Therefore, for promoting the operating physical force of the necessary operating lever of the second sword body, more known especially light.
Yet because as previously mentioned, the second sword body only rotates at rotational angle θ C2 (θ C2＜θ C), only depends on the second sword body can't make sword closed fully.Therefore, the present invention only will be equivalent to the first sword body of background technology fixed blade body, by the opposite direction of the second sword body, only rotate at rotational angle θ C1 (θ C1+ θ C2 〉=θ C), and the first sword body and the second sword body can be closed fully.The rotation of the rotational angle θ C1 of this first sword body is carried out with the promotion interlock of operating lever.
About this point, except rotating in the first sword body rotational angle θ C1 scope, utilize outside operating lever carries out, rotate the opportunity of the first sword body, not in the middle of operating lever promotes to the scope with initial stage work angle θ 1 from starting point, but, in the middle of the scope promotion of terminal point, carry out to good with final work angle θ 2 thereafter.As shown in Figure 7, cut off the necessary sword closing force of reinforcing bar, because of stage in the early stage rises rapidly towards spike, utilize operating lever to carry out the first sword body with rotational angle θ C1 rotation when rising, then the operating physical force of operating lever can be very heavy.Relatively, cut off the necessary sword closing force of reinforcing bar, slowly descend, rotate to good with rotational angle θ C1 so when this descends, utilize operating lever to carry out the first sword body in the spike final stage later, operating physical force with the work operating lever increases, and the muscle power of tool-user is not had much influences.
Therefore, in the parting tool that the present invention constitutes as solving the above-mentioned purpose means, comprise the first sword body and the second sword body that overlap each other, with the pivot is the operating lever that the work angle θ scope of center between starting point and terminal point back and forth rotated, and be located at linkage between aforementioned operation lever and the aforementioned second sword body, the U-shaped sword enable possition that communicates aligned with each other at the first sword body and the second sword body, bars such as reinforcing bar are inserted this U-shaped sword, utilize operating lever to promote toward pushing direction F, via linkage, the first sword body and the second sword body are relatively rotated, utilize the rotational angle θ C scope of this U-shaped sword till to rotate from aforementioned enable possition to obstructed each other closed position, in this U-shaped sword inside bar is cut off, wherein this linkage is in the aforementioned operation angle θ scope of operating lever till the origin-to-destination, when promoting toward pushing direction F, second sword body f2 clockwise only rotates with rotational angle θ C2 (wherein θ C2＜θ C), this first sword body is at U-shaped sword enable possition state, fix and f1 rotation clockwise, the aspect axle props up at anticlockwise r1 and rotates freely in addition, in between this first sword body and operating lever, be provided with the subsidy driving mechanism, the structure of this subsidy driving mechanism is, when operating lever rotates with initial stage work angle θ 1 scope from starting point, the first sword body does not rotate, but when operating lever rotated with final work angle θ 2 scopes towards terminal point, the first sword body but only rotated at anticlockwise angle θ C1 (wherein θ C+ θ C2 〉=θ C).
In embodiments of the present invention, with the pivot operating lever that rotate at the center, should define the promotion starting point by about erectility, and approximately level defines the promotion terminal point, therefore, the work angle till the origin-to-destination is approximately 90 degree.So via the subsidy driving mechanism, the first sword body forms about 30 degree by the final work angle θ 2 of operating lever that anticlockwise r1 rotates.
In addition, the subsidy driving mechanism preferably by from the first sword body towards near the actuating arm that extends the pivot of operating lever and the driving chip that is located at operating lever constituted.This driving chip at operating lever when starting point is rotated with the scope of initial stage work angle θ 1, do not combine with actuating arm, and operating lever then combines with actuating arm when final work angle θ 2 scopes of terminal point are rotated, and the first sword body is rotated by anticlockwise r1.
In addition, be good to be provided with return gear between the operating lever and the first sword body, this return gear can be made of near actuating arm that extends the pivot of operating lever from the first sword body and the sheet that reverses that is located at operating lever.As previously mentioned, when final work angle θ 2 scopes of operating lever were rotated, the first sword body was that anticlockwise r1 rotates.Therefore, this sheet that reverses cuts off at bar and finishes till the operating lever starting point, and when rotating by the direction R that reverses, promptly the actuating arm with the first sword body combines, and utilizes this first sword body to rotate by f1 clockwise, and the U-shaped sword of this first sword body promptly returns to the enable possition.
According to the present invention, the first sword body and the second sword body are when the rotational angle θ C scope till from the enable possition to the closed position relatively rotates each other, when the work angle θ scope of operating lever till origin-to-destination promotes, the second sword body is only being that little rotational angle θ C2 rotates than this rotational angle θ, thus wish to get the second sword body closing force that the bar of nipping cut off the operating physical force of necessary operating lever can alleviate.Especially cut off the necessary sword closing force of reinforcing bar, rise toward spike rapidly, can reduce, the labor reduction of tool-user is had contribution greatly at the initial stage of operating lever work angle θ 1 necessary operating physical force in the closed initial stage of sword.
At this moment, the first sword body is fixed into f1 rotation clockwise, so firm support bar utilizes the second sword body in rotating, well carries out the initial stage of bar and cuts off.Yet, when the first sword Ti Zai Shu does final work angle θ 2 promotions of lever, only rotate by anticlockwise via the subsidy driving mechanism at rotational angle θ C1, so utilize the second sword body rotational angle θ C2 and the first sword body rotational angle θ C1 comprehensive, reach cross over all U-shaped swords from the enable possition to the closing position till the two-edged rotation of the necessary rotational angle θ C of skew institute, can cut off bar fully.
About this point, the present invention notices and cuts off the necessary sword closing force of reinforcing bar, past rapidly spike rising of stage in the early stage, the characteristic that other aspect promptly slowly descended in the spike final stage later is so formation is with the rotation of the first sword body anticlockwise r1, with the promotion of the final work angle θ 2 of operating lever interlock in addition, so with the rotation of the first sword body, the operating physical force of operating lever increases, be in the sword closing force descends, to produce, so, be its advantage to tool-user muscle power moment-less influence.
Yet, operating lever is when final work angle θ 2 scopes promote, rotation with the first sword body, can't avoid the operating physical force of operating lever to increase, but, final work angle 92 is constituted below 30 degree of dried up plane, then when this operating physical force increases simultaneously if the work angle θ of operating lever is constituted 90 degree, the body weight of tool-user can load on operating lever, so the effect that alleviates the tool-user labour is arranged.
Therefore, according to the embodiment of the invention, the subsidy driving mechanism be by from the first sword body towards near the actuating arm that extends the pivot of operating lever and the driving toilet that is located at operating lever constitute, so simple structure is with low cost.; the shape and size of actuating arm and driving chip can optionally be set; take into account and cut off the thin characteristic of closing of the necessary sword of reinforcing bar; about the operating lever in promoting with final work angle θ 2; being designed to easily can be in operating lever angle position the most laborsaving, the final cut-out reinforcing bar of optimum efficiency, the combination of beginning driving chip and actuating arm.
Again, according to the embodiment of the invention, used operating lever is pushed to from starting point and cuts off till the terminal point after bar finishes, if tool-user is about to operating lever and is reversed to till the starting point, it is standby that the first sword body and the second sword body promptly return to original enable possition, be easy to again bar be inserted the U-shaped sword, to repeat to cut off operation.Promptly, when operating lever reversed, the second sword body was got back to the origin-location by linkage, and utilized the previous first sword body that step anticlockwise r1 rotates that cuts off, then recover the origin-location, make the first sword body and the second sword body standby at the enable possition state via return gear.
Description of drawings
Fig. 1 is all oblique views of the embodiment of the invention;
Fig. 2 wants the oblique view of portion for the embodiment of the invention;
Fig. 3 represents the effect of the embodiment of the invention, (A) the expression operating lever is at the skiagraph of start position state, (B) the expression operating lever only in the early stage work angle θ 1 promote the skiagraph of state, (C) the expression operating lever is pushed to the skiagraph of state till the terminal point;
Fig. 4 is embodiment of the invention effect and known technology effect control curve figure, (A) work angle of expression operating lever and the graph of relation of sword aperture size, (B) work angle of expression operating lever and the graph of relation of lever power;
Fig. 5 represents the effect of embodiment of the invention addition bend machine, (A) the effect front elevation of (B) expression bar when curving approximate right angle, the effect front elevation when (C) (D) expression bar of curving the right angle curves U-shaped;
Fig. 6 represents the parting tool of background technology, and (A) the expression operating lever has been positioned at the skiagraph of dotted state, (B) represents the skiagraph till operating lever is pushed to terminal point;
When Fig. 7 cuts off reinforcing bar for utilizing a counter blade body that generally has the U-shaped sword, sword aperture size and sword closing force graph of relation.
The specific embodiment
Below in conjunction with accompanying drawing in detail better embodiment of the present invention is described in detail.
As depicted in figs. 1 and 2, parting tool of the present invention comprises the pedestal 12 that possesses fixed handle 11, be installed in the first sword body 13 and the second sword body 14 of this pedestal 12, be hubbed on the operating lever 15 of this pedestal 12, and the linkage 16 that when rotating this operating lever, can rotate the second sword body 14.
The first sword body 13 and the second sword body 14 prop up with the state that overlaps each other and are held in fulcrum 17, have the U-shaped sword 13a that forms with similar shape nick shaped spill ditch at periphery respectively, 14a.The first sword body 13 rotates freely the earth's axis and props up in fulcrum 17, but is provided with stop mechanism 18 at this first sword body 13 and 12 of pedestals, make its clockwise f1 rotate, the inactive state that stop mechanism 18 is run into is its fixed position.Therefore, the first sword body 13 can only rotate freely from fixed position anticlockwise r1.Relatively, the second sword body 14 rotates freely the earth's axis and props up in fulcrum 17, and f2 and the two-way rotation of anticlockwise r2 clockwise freely.Again, be meant the directionality that illustrates with regard to drawing with anticlockwise clockwise, therefore, notice is seen with regard to reverse side and is promptly referred to opposite directionality.
When operating lever 15 is positioned at starting point S with about orthostatism, the U-shaped sword 14a of the second sword body 14, U-shaped sword 13a with the first sword body 13 that is positioned at the fixed position of running into stop mechanism 18, shown in Fig. 3 (A), be that aligned with each other communicating is " enable possition " state, bar such as reinforcing bar or steel wire 21 can insert U-shaped sword 13a, 14a.Operating lever 15 is when from then on state turns to approximately horizontal terminal point E by pushing direction F, shown in Fig. 3 (C), the first sword body 13 and the second sword body 14 promptly relatively rotate, and are displaced to U-shaped sword 13a, " closing position " state that 14a is obstructed is each other cut off bar.That is, the first sword body 13 and the second sword body 14 relatively rotate with rotational angle θ C scope, make U-shaped sword 13a, and 14a is displaced to " closing position " from " enable possition ".
Between the first sword body 13 and operating lever 15, be provided with subsidy driving mechanism 22.Subsidy driving mechanism 22 is when starting point S rotates with initial stage work angle θ 1 scope, the first sword body 13 is rotated, only in the early stage after the work angle θ 1, when terminal point E rotated, the first sword body 13 only rotated by anticlockwise r1 with rotational angle θ C1 operating lever 15 with final work angle θ 2 scopes.Promptly, utilize the second sword body 14 clockwise f2 only rotate with rotational angle θ C2, the first sword body 13 only rotates with rotational angle θ C1 by anticlockwise r1, then the first sword body 13 and the second sword body 14 all are equivalent to rotational angle θ C and relatively rotate, U-shaped sword 13a, 14a promptly is offset to closing position from the enable possition.Therefore, be set at
θC1+θC2＝θC。
In the illustrated embodiment, subsidy driving mechanism 22 is made of near actuating arm 13b that extend the pivot from the first sword body 13 towards operating lever 15 19 and the driving chip 23 of being located at operating lever 15 base portion 15a around pivot 19.Though driving chip 23 and operating lever 15 parallel rotations, only as Fig. 3 (A) with (B), when operating lever 15 rotates with the scope of initial stage work angle θ 1 from starting point S, do not combine with actuating arm 13b, when only 15 beginnings of now operating lever were rotated with final work angle θ 2, driving chip 23 promptly was incorporated into the bottom of actuating arm 13b, shown in Fig. 3 (C), when operating lever 15 turned to terminal point E, 13b upwards pushed away actuating arm, then the first sword body, 13 anticlockwise r1 was only rotated with rotational angle θ C1.
Preferred embodiment of the present invention is that the work angle with operating lever 15 is set in 90 degree, and initial stage work angle θ 1 is 60 degree, and final work angle θ 2 is 30 degree.
Moreover, be provided with return gear 24 at operating lever 15 and 13 of the first sword bodies.Return gear 24 is made of the aforementioned actuating arm 13b and the sheet 26 that reverses of being located at operating lever 15 base portion 15a around pivot 19.As previously mentioned, till utilizing operating lever 15 to be pushed to terminal point E from starting point S, then the first sword body 13 is via subsidy driving mechanism 22, by anticlockwise r1, only rotate with rotational angle θ C1, but when operating lever 15 reverses till starting point S from terminal point E, operating lever 15 is near starting point S, the sheet 25 that reverses promptly is incorporated into actuating arm 13b top, thereafter, when operating lever 15 is pushed to starting point S, actuating arm 13b to pressing down, make the first sword body 13 run into stop mechanism 18, make the first sword body 13 recover original fixed position.
Fig. 4 is with regard to reinforcing bar Φ 13mm parting tool, according to the embodiments of the invention effect, is contrasted with the known technology effect that illustrates according to Fig. 6.The U-shaped sword is of a size of 13mm in the sword aperture of enable possition, and the work angle of operating lever (aforesaid operations angle θ) is 90 degree.
The work angle of Fig. 4 (A) expression operating lever and the relation of sword aperture.Known technology is pushed to 0 when spending at operating lever from 90 degree, and sword is the proportionate relationship closure according to the angle of operating lever.Relatively, with the present invention, operating lever from 90 the degree be pushed to 30 the degree till the time, the sword closing speed is slow, from 30 the degree be pushed to 0 the degree till the time, the sword closing speed is fast.Under situation of the present invention, operating lever 15 is work angle θ 1 scope in the early stage, in the time of till 90 degree are pushed to 30 degree, have only the second sword body 14 to rotate, operating lever 15 is in final work angle θ 2 scopes, is pushed to 0 when spending from 30 degree, and the two all rotates the second sword body 14 and the first sword body 13.
Yet, as shown in Figure 7, cut off the necessary sword closing force of reinforcing bar Φ 13mm, when the about 9mm of sword aperture size, be spike.About this point, shown in Fig. 4 (A), in the known technology, in the position of the about 9mm of sword aperture that must maximum sword closing force, about 63 degree of the work angle of operating lever, operating lever promotion amount is spent till 63 degree from 90, but 27 spend, so very big operating physical force must be arranged to promote operating lever.Relatively, under situation of the present invention, during the about 9mm of sword aperture, about 46 degree of the work angle of operating lever, the promotion amount of operating lever is spent to 46 degree from 90, is 44 degree, operating lever is promoted necessary operating physical force especially alleviate.
Fig. 4 (work angle that B) Biao Shi Shu makes lever with promote operating lever the relation of necessary lever power.As previously mentioned, known technology is about about 65 degree of the work angle of operating lever, and necessary maximum sword closing force, result, lever power are spent between 65 degree 90 and also risen rapidly, yet, near spike, the big operating physical force of 550N must be arranged when spike at 60 degree.Relatively, under situation of the present invention, about about 45 degree of the work angle of operating lever, sword closing force that must be maximum, slowly rise so lever power is spent to 45 degree from 90, and rise to till 30 degree near spike all slow, even during to spike, operating physical force about 480N is promptly enough, and lever power especially alleviates.
In the illustrated embodiment, parting tool of the present invention is set up the bending machine function that bars such as reinforcing bar is in addition crooked.Promptly as shown in Figure 1, when operating lever 15 rotated, pivot 19 is promptly parallel to rotate, and rotor 26 is fixed in this pivot 19.Rotor 26 is provided with the guiding teat 27 outstanding from the center, is provided with a pair of first simultaneously and drives the teat 28 and the second driving teat, is positioned at the circumference on every side of this guiding teat 27, and apart 90 degree are outstanding from rotor 26.
The using method of this bending machine as shown in Figure 5.Operating lever 15 is positioned at the state of starting point S, and rotor 26 is posture shown in Fig. 5 (A).At this state, bar-shaped 21 can intert below guiding teat 27 and between above the first driving teat 28.So when operating lever 15 was pushed to terminal point E from starting point S, shown in Fig. 5 (B), bar 21 promptly drives teat 28 first and bends, and was at right angles crooked generally along guiding teat 27 side faces.
When bar 21 must curve U-shaped, curve the bar 21 of approximate right angle, implement step shown in Fig. 5 (C) and Fig. 5 (D) again and be advisable utilizing step shown in Fig. 5 (A) and Fig. 5 (B).Promptly, be positioned at the state of starting point S at operating lever 15, rotor 26 is posture shown in Fig. 5 (C), bar 21 is in the part of the forward end of bend, the side and second of inserting guiding teat 27 drives between the side of teat 29, simultaneously, bar 21 can be inserted below guiding teat 27 and between above the first driving teat 28 in the part of bend by cardinal extremity.So operating lever 15 shown in Fig. 5 (D), in the part of the forward end of bar 21 flexing portions, promptly drives teat 29 second and bends till starting point S is pushed to terminal point E the time, curves rough U-shaped along guiding teat 27 side faces.
Claims (4)
1. cutting tool for stick material, comprise the first sword body (13) and the second sword body (14) that overlap each other, with pivot (19) is the operating lever (15) that the work angle θ scope of center between starting point S and terminal point E back and forth rotated, and be located at linkage (16) between this operating lever (15) and this second sword body (14), U-shaped sword (13a at the first sword body and the second sword body, 14a) the enable possition that communicates aligned with each other, bars such as reinforcing bar are inserted this U-shaped sword, utilize operating lever (15) to promote toward pushing direction F, via linkage (16), the first sword body (13) and the second sword body (14) are relatively rotated, this U-shaped sword turned to the closing position that does not communicate with each other with rotational angle θ C scope from this enable possition till, in this U-shaped sword inside bar is cut off, it is characterized by, this linkage (16) is in the scope of operating lever (15) with this work angle θ, when being pushed to till the terminal point from pressing pushing direction F, make the second sword body (14) clockwise f2 only rotate with rotational angle θ C2 (wherein θ C2＜θ C);
This first sword body (13) is at U-shaped sword enable possition state, and f1 is fixing clockwise can not rotate, and the aspect is rotated freely the earth's axis and propped up in anticlockwise r1 in addition, is provided with the subsidy driving mechanism between this first sword body (13) and operating lever (15);
This subsidy driving mechanism (22) at operating lever (15) when starting point S rotates with initial stage work angle θ 1 scope, the first power body (13) can not rotate, only when terminal point E rotated, pressed anticlockwise r1 and only rotate with rotational angle θ C1 (wherein θ C1+ θ C2 〉=θ C) by the first sword body (13) with final work angle θ 2 for operating lever (15).
2. cutting tool for stick material as claimed in claim 1, it is characterized in that, be the operating lever (15) that rotate at the center wherein with pivot (19), promoting starting point S with erectility roughly, constitute with the work angle θ of approximate horizontal state till promoting terminal point E, making simultaneously and be roughly 90 degree from starting point S to terminal point;
Via subsidy driving mechanism (22), make the first sword body (13) by the final work angle θ 2 of anticlockwise r1 rotating operation lever (15), formation is roughly 30 degree.
3. cutting tool for stick material as claimed in claim 1, it is characterized in that, wherein this subsidy driving mechanism (22) is made of near actuating arm (13b) that extends from the first sword body (13) towards operating lever (15) pivot and the driving chip (23) that is located at operating lever (15);
This driving chip (23) at operating lever (15) when starting point S rotates with initial stage work angle θ 1 scope, do not combine with actuating arm (13b), when thought operating lever (15) promotes with final work angle θ 2 scopes towards terminal point E, (13b) combines with actuating arm, and the first sword body (13) is rotated by anticlockwise r1.
4. as claim 1,2 or 3 cutting tool for stick material, it is characterized in that, wherein between the operating lever (15) and the first sword body (13), be provided with return gear (24), this return gear (24) is made of near driving of extending the pivot from the first sword body (13) towards operating lever (15) thin (13b) and the sheet that reverses (25) that is located at operating lever (15);
This sheet that reverses (25) is with respect to utilizing operating lever (15) to rotate and the actuating arm (13b) of the first sword body (13) that anticlockwise r1 rotates with final work angle θ 2, in the time of till operating lever (15) turns to starting point S by the direction R that reverses, (13b) combines with this actuating arm, make the first sword body (13) clockwise f1 rotate, the U-shaped sword of this first sword body (13) is returned to the enable possition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410097979 CN1781636A (en) | 2004-12-02 | 2004-12-02 | Cutting tool for stick material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410097979 CN1781636A (en) | 2004-12-02 | 2004-12-02 | Cutting tool for stick material |
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| CN1781636A true CN1781636A (en) | 2006-06-07 |
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| CN 200410097979 Pending CN1781636A (en) | 2004-12-02 | 2004-12-02 | Cutting tool for stick material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109807265A (en) * | 2017-12-01 | 2019-05-28 | 俞丹 | A kind of relay protection small bus cutting nipper |
| CN114206531A (en) * | 2019-04-02 | 2022-03-18 | 沃尔夫克拉夫特公司 | Lever-driven cutting device |
-
2004
- 2004-12-02 CN CN 200410097979 patent/CN1781636A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109807265A (en) * | 2017-12-01 | 2019-05-28 | 俞丹 | A kind of relay protection small bus cutting nipper |
| CN114206531A (en) * | 2019-04-02 | 2022-03-18 | 沃尔夫克拉夫特公司 | Lever-driven cutting device |
| CN114206531B (en) * | 2019-04-02 | 2024-03-26 | 沃尔夫克拉夫特公司 | Lever-driven cutting device |
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