CN109202973B

CN109202973B - Cutting tool

Info

Publication number: CN109202973B
Application number: CN201811161998.8A
Authority: CN
Inventors: 孙丰超; 党菲; 孙佳佳; 付宏程; 王学海; 顾波; 孟林; 陈慰; 齐东亚
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2021-02-02
Anticipated expiration: 2038-09-30
Also published as: CN109202973A

Abstract

The invention discloses a cutting tool, which comprises a shell, a rotary core plate and a locking assembly, wherein the rotary core plate is arranged on the shell; a pull ring and a safety bulge are arranged on one side of the shell, and the shell, the pull ring and the safety bulge form a material channel; a gap is arranged between the safety bulge and the pull ring and is communicated with the material channel; the shell is also provided with an installation cavity for accommodating the rotary core plate, and the shell is provided with a cutter hole which faces the material channel and is communicated with the installation cavity; a cutter groove is arranged on the rotary core plate, and a blade is arranged in the cutter groove; the rotary core plate is rotationally connected with the shell, and the rotary core plate is arranged to be screwed into or out of the mounting cavity; when the rotary core plate is screwed into the mounting cavity, the cutting edge is positioned in the material channel; a locking assembly is mounted on the housing, the locking assembly being configured to lock the rotary core plate within the mounting cavity. The present disclosure can improve safety in use.

Description

Cutting tool

Technical Field

The invention relates to the field of automobile assembling tools, in particular to a cutting tool.

Background

The automobile wire harness wrapping uses PVC or flannelette adhesive tapes for wrapping protection and is widely used.

In the production of automobile wire harnesses and various electrical overhaul processes in daily life, after PVC adhesive tapes are used for wrapping, the adhesive tapes need to be cut by using scissors cutters, so that the purpose of cutting the adhesive tapes is achieved. Especially in the production process of automobile wire harnesses, the cutter cutting adhesive tape is frequently used.

And (4) cutting the wiring harness adhesive tape by using traditional scissors or a blade.

When the cutter in the prior art is used, the cutting edge is exposed, and the cutter is usually provided with a tip, so that fingers are easy to be injured, and a large potential safety hazard exists.

How to eliminate the potential safety hazard when cutting the adhesive tape is one of the important problems to be solved urgently in the field.

Disclosure of Invention

It is an object of the present invention to provide a cutting tool that addresses the deficiencies in the prior art and that improves the safety of the tool in use.

The present disclosure provides a scissors cutting tool, comprising a housing, a rotary core plate, and a locking assembly;

a pull ring and a safety bulge are arranged on one side of the shell, and the shell, the pull ring and the safety bulge form a material channel; a gap is arranged between the safety bulge and the pull ring, and the gap is communicated with the material channel;

the shell is also provided with an installation cavity for accommodating the rotary core plate, the shell is provided with a cutter hole, the cutter hole faces the material channel, and the cutter hole is communicated with the installation cavity;

the rotary core plate is provided with a cutter groove, a cutter blade is arranged in the cutter groove, and the cutting edge of the cutter blade protrudes out of one side of the rotary core plate;

the rotary core plate is rotationally connected with the shell, and the rotary core plate is arranged to be screwed into or out of the mounting cavity; when the rotary core plate is screwed into the mounting cavity, the cutting edge is positioned in the material channel;

the locking assembly is mounted on the housing, the locking assembly being configured to lock the rotary core plate within the mounting cavity.

Optionally, the housing further includes a connecting portion, the connecting portion is disposed on one side of the housing close to the safety protrusion, and the pull ring is mounted on the connecting portion; the pull ring is opposite to the knife hole.

Optionally, the pull ring comprises an arc-shaped portion, a clamping strip and a jaw; the clamping strip is arranged at one end of the arc-shaped part, and the clamping jaw is arranged at the other end of the arc-shaped part;

the clamping strip is provided with a plurality of clamping grooves, and the clamping jaw is provided with a clamping tooth matched with any one of the clamping grooves.

Optionally, a boss is arranged on the periphery of the pull ring.

Optionally, the shell includes two side plates arranged in parallel, one end of the same edge of the two side plates is connected to the connecting portion, and the other end of the edge of the connecting portion of the two side plates is connected to the safety protrusion;

the two side plates, the connecting part and the safety bulge enclose the knife hole; the knife hole is a strip-shaped hole;

the mounting cavity is formed by two side plates;

the rotary core plate is rotationally connected with the two side plates through a rotary pin; the rotating pin is positioned at a top corner of the side plate.

Optionally, the locking assembly comprises a locking block, a locking pin and an elastic element;

a locking groove is formed in one side, far away from the pull ring, of the safety bulge, and the locking groove is communicated with the mounting cavity;

the locking block is arranged in the locking groove and is in sliding connection with the locking groove; one end of the elastic element is connected with the locking block, and the other end of the elastic element is connected with the locking groove; the elastic element is arranged for applying a force to the locking block towards the mounting cavity;

the locking pin is arranged on the locking block and is positioned on one side, facing the installation cavity, of the locking block;

a locking hole is provided in the rotary core plate, the locking hole configured for insertion of the locking pin into the locking hole such that the rotary core plate is locked within the mounting cavity.

Optionally, the locking assembly further comprises a guide rod;

a guide lug is arranged at the bottom of the locking groove, and one side of the guide lug is connected with the side wall, which is opposite to the mounting cavity, of the locking groove; the guide lug is provided with a guide hole, and the opening direction of the guide hole faces the installation cavity;

the locking block is provided with a guide groove matched with the guide lug, and the guide groove is connected with the guide lug in a sliding manner; one end of the guide rod is connected with the locking block, and the guide rod is positioned in the guide groove; the guide rod is connected with the guide hole in a sliding fit mode.

Optionally, a groove is formed in the side wall of the locking groove, and a guide slider adapted to the groove is arranged on the side wall of the locking block.

Optionally, one side of the locking block, which is far away from the bottom of the locking groove, is provided with a recessed portion, and anti-skid lines are arranged in the recessed portion.

Optionally, the blade is square, and the blade has the cutting edge on each of four sides.

This is disclosed through set up pull ring and safe arch in one side of casing, the pull ring with form a material passageway between the casing, through safe arch, can prevent to install the cutting edge of the blade in the casing and expose to can improve the security of cutter.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is an exploded view of a scissors assembly according to the present disclosure;

fig. 2 is an isometric view of the cutting knife of the present disclosure with the rotating core plate rotated out;

fig. 3 is a front view of the scissors tool of the present disclosure when the jaws are engaged with the clamping bars;

fig. 4 is a front view of the cutting knife according to the present disclosure when the jaws are separated from the catch bar;

fig. 5 is a cross-sectional view of a cutting knife according to the present disclosure;

FIG. 6 is an isometric view of a cutting tool according to the present disclosure in use;

fig. 7 is a front view of the cutting tool proposed by the present disclosure in use;

FIG. 8 is a sectional view taken along line A-A of FIG. 7;

FIG. 9 is a schematic view of the cutting tool of the present disclosure engaged with a finger during use;

fig. 10 is a partially enlarged schematic view of the scissors assembly of the present disclosure when the locking assembly is locked;

fig. 11 is a partially enlarged schematic view of the scissors assembly of the present disclosure when the locking assembly is open;

FIG. 12 is an isometric view of a housing set forth in the present disclosure;

FIG. 13 is a side view of the housing set forth in the present disclosure;

FIG. 14 is a sectional view taken along line B-B of FIG. 13;

FIG. 15 is an isometric view of a rotary core plate as set forth in the present disclosure;

fig. 16 is a front view of a rotary core plate proposed by the present disclosure;

fig. 17 is a side view of a rotary core plate proposed by the present disclosure;

FIG. 18 is an isometric view of a lockout block in accordance with the present disclosure;

FIG. 19 is an isometric view of the latch block of FIG. 18 from another perspective;

FIG. 20 is a front view of FIG. 19;

FIG. 21 is a top view of FIG. 19;

FIG. 22 is an isometric view of a latch block disclosed in another embodiment contemplated by the present disclosure;

FIG. 23 is a schematic structural view of a locking groove proposed by the present disclosure;

FIG. 24 is a schematic view of the structure of the elastic member proposed by the present disclosure;

fig. 25 is an isometric view of a blade as set forth in the present disclosure.

Description of reference numerals:

1-shell, 2-rotary core plate, 3-locking component, 4-pull ring, 5-safety protrusion, 6-material channel, 7-gap, 8-adhesive tape, 9-finger;

11-installation cavity, 12-knife hole, 13-connecting part and 14-side plate;

21-knife slot, 22-blade, 23-rotation pin, 24-locking hole;

221-a blade edge;

31-locking block, 32-locking pin, 33-elastic element, 34-guide rod;

311-a guide groove, 312-a guide block, 313-a concave part and 314-a first limit block;

3131-non-skid lines;

41-arc part, 42-clamping strip, 43-clamping jaw and 44-boss;

421-a card slot;

431-latch;

51-a locking groove;

511-a guide projection, 512-a groove, 513-a second limiting block;

5111-pilot hole.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The embodiment of the disclosure: as shown in fig. 1-5, the present disclosure proposes a cutting knife comprising a housing 1, a rotary core 2 and a locking assembly 3. The housing 1 is used to mount the rotary core 2 and the locking assembly 3 is used to lock the rotary core 2 within the housing 1.

Specifically, one side of the shell 1 is provided with a pull ring 4 and a safety protrusion 5, and by arranging the connecting ring 4, an operator can conveniently insert fingers 9 into the pull ring 4 so as to be convenient to operate. In particular, the housing 1, the tab 4 and the safety protrusion 5 constitute a material channel 6. The material channel 6 is used for allowing a material to be cut to pass through, a gap 7 is arranged between the safety protrusion 5 and the pull ring 4, and the gap 7 is communicated with the material channel 6. In particular, by providing the gap 7, it is facilitated to enter the material from the gap 7 into the material channel 6. Further, in order to facilitate feeding of material into the material channel 6, the gap 7 may be provided as a flared structure, i.e. the width of the gap 7 becomes gradually larger in a direction away from the housing 1. Therefore, the materials can conveniently enter the material channel 6. In practice, the material may be the adhesive tape 8, or may be a wire harness or a hose. Since the adhesive tape 8 is often bulky at both ends thereof after being bonded to other components during operation, and is not easily inserted into the material passage 6, the gap 7 is provided to enable the adhesive tape 8 to be directly inserted into the material passage 6 from the side. By arranging the safety protrusion 5, the blade 221 in the material passage 6 can be prevented from being exposed.

Still be equipped with on the casing 1 and be used for holding rotatory core 2's installation cavity 11, be equipped with sword hole 12 on the casing 1, sword hole 12 orientation material passageway 6, just sword hole 12 with installation cavity 11 intercommunication. The rotary core plate 2 is provided with a knife groove 21, the knife blade 22 is arranged in the knife groove 21, and the cutting edge 221 of the knife blade 22 protrudes out of one side of the rotary core plate 2. So, after sending into material passageway 6 with the material through clearance 7, just can realize cutting out the material through pulling pull ring 4. Can guarantee safe in utilization promptly, can operate fast again.

In particular, the rotary core 2 is rotatably connected to the housing 1, the rotary core 2 being provided for screwing in or unscrewing out of the mounting cavity 11. When the rotary core plate 2 is screwed into the mounting cavity 11, the cutting edge 221 is located in the material passage 6. Through setting up rotatory core 2, be convenient for change the blade. Further, the locking assembly 3 is mounted on the housing 1, the locking assembly 3 being arranged for locking the rotary core plate 2 in the mounting cavity 11. Through the arrangement of the locking assembly 3, the rotary core plate 2 can be firmly locked in the shell 1 during operation, so that the reliability of the operation is ensured.

Referring to fig. 6 to 9, in specific implementation, the pull ring 4 is firstly sleeved on the finger 9, the material to be cut is sent into the material channel 6 from the gap 7, and then the pull ring 4 is pulled, so that the blade 221 can be driven to cut the material. When the blade 22 needs to be replaced, please refer to fig. 10 and 11, the locking assembly 3 is opened, the rotary core plate 2 is unscrewed from the mounting cavity 11, the whole blade slot 21 is located outside the housing 1, and then the blade 22 in the blade slot 21 is replaced. And then the rotary core plate 2 is screwed into the mounting cavity 11, and the rotary core plate 2 is locked through the locking assembly 3. Thereby enabling replacement of the blade 22.

Optionally, referring to fig. 12 to 14, the housing 1 further includes a connecting portion 13, the connecting portion 13 is disposed on a side of the housing 1 close to the safety protrusion 5, and the pull ring 4 is mounted on the connecting portion 13. The pull ring 4 is opposite to the knife hole 12. In particular, the tab 4 is mounted on the housing 1 by means of the connection 13. The connecting portion 13 is integrally formed with the tab 4.

Further, referring to fig. 3 and 4, in order to accommodate fingers 9 of different thicknesses, the pull ring 4 includes an arc portion 41, a catch strip 42, and a catch 43. The clamping strip 42 is installed at one end of the arc portion 41, and the clamping jaw 43 is installed at the other end of the arc portion 41. Specifically, the central angle corresponding to the arc-shaped part 41 is 240-300 degrees. And the shape part 41 has certain elasticity, so that the clamping of the clamping strip 42 and the clamping jaw 43 can be ensured.

Further, referring to fig. 3 and 4, a plurality of slots 421 are disposed on the clip strip 42, and a latch 431 for engaging with any of the slots 421 is disposed on the claw 43. In specific implementation, the latch 431 is matched with different slots 421, so that the diameters of the formed pull rings 4 are different. Thereby accommodating the diameters of different human fingers 9.

Optionally, referring to fig. 9, a boss 44 is provided on the outer circumference of the tab 4. Specifically, through setting up boss 44, during the use, will boss 44 supports and leans on adjacent finger 9 to can prevent that cutting scissors utensil from taking place to rotate in the in-process of using, thereby the travelling comfort when can effectively improving the use.

Optionally, referring to fig. 12 to 14, the housing 1 includes two side plates 14 disposed in parallel, one end of the same edge of the two side plates 14 is connected to the connecting portion 13, and the other end of the edge of the connecting portion 13 of the two side plates 14 is connected to the safety protrusion 5. Further, the two side plates 14, the connecting portion 13 and the safety protrusion 5 enclose the knife hole 12, and the knife hole 12 is a strip-shaped hole. In practice, the rotary core plate 2 is directly rotated and arranged between the two side plates 14. The mounting cavity 11 is formed by two side plates 14. The rotary core plate 2 is rotatably connected to the two side plates 14 by means of rotary pins 23. The pivot pin 23 is located at a top corner of the side plate 14. Thus, the rotation of the rotary core plate 2 is facilitated, referring to fig. 14, the side plate 14 is rectangular, and the rotary pin 23 is disposed at an opposite angle between the side plate 14 and the safety protrusion 5. In order to facilitate the rotation of the rotary core plate 2 out of the shell 1, the vertex angles of the rotary core plate 2 are all round chamfers.

Referring to fig. 15 to 17, the shape of the rotary core plate 2, it can be understood by those skilled in the art that fig. 15 to 17 are only one possible embodiment of the rotary core plate 2, and are not limiting to the present disclosure.

Alternatively, referring to fig. 18 to 21, the locking assembly 3 includes a locking block 31, a locking pin 32 and an elastic element 33. The locking block 31 is configured to slide, and the locking pin 32 is configured to lock with the rotary core 2. The elastic element 33 is used for pushing the locking block 31 to move towards the mounting cavity 11. Specifically, a locking groove 51 is formed in one side, away from the pull ring 4, of the safety protrusion 5, and the locking groove 51 is communicated with the installation cavity 11.

The locking block 31 is installed in the locking groove 51, and the locking block 31 is slidably connected with the locking groove 51. One end of the elastic member 33 is connected to the locking block 31, and the other end of the elastic member 33 is connected to the locking groove 51. The elastic element 33 is arranged for applying a force to the locking block 31 towards the mounting chamber 11. The locking pin 32 is installed on the locking block 31, and the locking pin 32 is located on one side of the locking block 31 facing the installation cavity 11. A lock hole 24 is provided in the rotary core plate 2, the lock hole 24 being configured for inserting the lock pin 32 into the lock hole 24 so that the rotary core plate 2 is locked in the mounting cavity 11. In this manner, the lock pin 32 can be inserted into the lock hole 24 by the elastic member 33. Thereby achieving locking. In specific implementation, one side of the locking block 31 close to the locking pin 32 is an inclined surface, and the position of the rotary core plate 2 corresponding to the locking block 31 also has a shape matched with the inclined surface. So, can play the guide effect, the locking of being convenient for. Referring to fig. 22, as another embodiment of the locking block 31, a side of the locking block 31 close to the locking pin 32 is an arc-shaped surface, and a position of the rotary core plate 2 corresponding to the locking block 31 also has a shape matching with the arc-shaped surface.

Referring to fig. 19 and 23, the locking assembly 3 further includes a guide rod 34. The bottom of the locking groove 51 is provided with a guide projection 511, and one side of the guide projection 511 is connected with the side wall of the locking groove 51, which is opposite to the installation cavity 11. The guide projection 511 is provided with a guide hole 5111, and the opening direction of the guide hole 5111 faces the installation cavity 11. Referring to fig. 24, the elastic element 33 is a spring, and in practical implementation, the elastic element 33 is sleeved on the guide rod 34. By providing the guide bar 34, the contact area during sliding is increased, which is advantageous for improving the sliding stability. The locking block 31 is provided with a guide slot 311 matched with the guide lug 511, and the guide slot 311 is connected with the guide lug 511 in a sliding manner. One end of the guide rod 34 is connected to the locking block 31, and the guide rod 34 is located in the guide groove 311. The guide rod 34 is inserted into the guide hole 5111, and the guide rod 34 is slidably connected with the guide hole 5111. In this way, the locking block 31 can be ensured to slide in the direction of the center line of the guide hole 5111.

Further, referring to fig. 23, a groove 512 is disposed on a side wall of the locking groove 51, and a guide block 312 adapted to the groove 512 is disposed on a side wall of the locking block 31. By arranging the guide sliders 312 on two sides of the locking block 31, the guide sliders 312 are matched with the grooves 512, so that the locking block 31 is prevented from deflecting in the sliding process. Furthermore, a concave part 313 is arranged on one side of the locking block 31 away from the bottom of the locking groove 51, and an anti-slip thread 3131 is arranged in the concave part 313. Thus, the locking block can be shifted through the anti-slip threads 3131 arranged in the recessed portion 313, so that the purpose of unlocking the rotary core plate 2 is achieved, and the rotary core plate 2 can be rotated as required.

Optionally, the blade 22 is square, and the blade 22 is provided with cutting edges 221 on four sides. Specifically, the knife slot 21 has the same structure as the blade 22, so that when the blade edge 221 on one side is damaged, the blade edge 221 on the other side can be replaced, and the service life of the blade 22 can be prolonged.

In specific implementation, the first stopper 314 is disposed on the locking block 31, the second stopper 513 is disposed in the locking groove 51, and the first stopper 314 is configured to abut against the second stopper 513 under the action of the elastic element 33, so that the locking block 31 can be prevented from being disengaged from the locking groove 51.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A cutting tool is characterized by comprising a shell (1), a rotary core plate (2) and a locking assembly (3);

a pull ring (4) and a safety bulge (5) are arranged on one side of the shell (1), and the shell (1), the pull ring (4) and the safety bulge (5) form a material channel (6); a gap (7) is arranged between the safety protrusion (5) and the pull ring (4), and the gap (7) is communicated with the material channel (6);

the shell (1) is further provided with a mounting cavity (11) for accommodating the rotary core plate (2), the shell (1) is provided with a cutter hole (12), the cutter hole (12) faces the material channel (6), and the cutter hole (12) is communicated with the mounting cavity (11);

the rotary core plate (2) is provided with a cutter groove (21), a blade (22) is arranged in the cutter groove (21), and the cutting edge (221) of the blade (22) protrudes out of one side of the rotary core plate (2);

the rotary core plate (2) is rotationally connected with the shell (1), and the rotary core plate (2) is arranged for screwing in or screwing out of the mounting cavity (11); when the rotary core plate (2) is screwed into the mounting cavity (11), the cutting edge (221) is positioned in the material channel (6);

the locking assembly (3) is mounted on the housing (1), the locking assembly (3) being arranged for locking the rotary core plate (2) within the mounting cavity (11); the pull ring (4) comprises an arc-shaped part (41), a clamping strip (42) and a clamping jaw (43); the clamping strip (42) is arranged at one end of the arc-shaped part (41), and the clamping jaw (43) is arranged at the other end of the arc-shaped part (41);

a plurality of clamping grooves (421) are formed in the clamping strip (42), and clamping teeth (431) used for being matched with any clamping groove (421) are formed in the clamping jaw (43); the locking assembly (3) comprises a locking block (31), a locking pin (32) and an elastic element (33);

a locking groove (51) is formed in one side, away from the pull ring (4), of the safety protrusion (5), and the locking groove (51) is communicated with the mounting cavity (11);

the locking block (31) is arranged in the locking groove (51), and the locking block (31) is connected with the locking groove (51) in a sliding manner; one end of the elastic element (33) is connected with the locking block (31), and the other end of the elastic element (33) is connected with the locking groove (51); the elastic element (33) is arranged for applying a force to the locking block (31) towards the mounting cavity (11);

the locking pin (32) is installed on the locking block (31), and the locking pin (32) is located on one side, facing the installation cavity (11), of the locking block (31);

a locking hole (24) is formed in the rotary core plate (2), and the locking hole (24) is used for inserting the locking pin (32) into the locking hole (24) so that the rotary core plate (2) is locked in the mounting cavity (11); the locking assembly (3) further comprises a guide rod (34);

a guide convex block (511) is arranged at the bottom of the locking groove (51), and one side of the guide convex block (511) is connected with the side wall, which is opposite to the installation cavity (11), of the locking groove (51); a guide hole (5111) is formed in the guide convex block (511), and the opening direction of the guide hole (5111) faces the installation cavity (11);

the locking block (31) is provided with a guide groove (311) matched with the guide lug (511), and the guide groove (311) is connected with the guide lug (511) in a sliding manner; one end of the guide rod (34) is connected with the locking block (31), and the guide rod (34) is positioned in the guide groove (311); the guide rod (34) is connected with the guide hole (5111) in a sliding fit mode.

2. The cutting tool according to claim 1, characterized in that the housing (1) further comprises a connecting portion (13), the connecting portion (13) being arranged on a side of the housing (1) close to the safety protrusion (5), the pull ring (4) being mounted on the connecting portion (13); the pull ring (4) is over against the knife hole (12).

3. The cutting tool according to claim 2, characterized in that the tab (4) is provided with a boss (44) on its outer circumference.

4. The cutting tool according to claim 2, characterized in that the housing (1) comprises two side plates (14) arranged in parallel, one end of the same edge of the two side plates (14) is connected with the connecting part (13), and the two side plates (14) are connected with the safety protrusion (5);

the two side plates (14), the connecting part (13) and the safety protrusion (5) enclose the knife hole (12); the knife hole (12) is a strip-shaped hole;

the mounting cavity (11) is formed by two side plates (14);

the rotary core plate (2) is rotationally connected with the two side plates (14) through rotary pins (23); the rotating pin (23) is positioned at a top corner of the side plate (14).

5. The scissors tool of claim 4, wherein the locking slot (51) is provided with a groove (512) on a side wall thereof, and the locking block (31) is provided with a guide block (312) on a side wall thereof, the guide block being adapted to the groove (512).

6. A scissors tool according to claim 5, characterised in that the side of the locking block (31) remote from the bottom of the locking slot (51) is provided with a recess (313), in which recess (313) is provided an anti-slip thread (3131).

7. A cutting knife according to any one of claims 1-6, characterized in that the blade (22) is square, and that the cutting edges (221) are provided on all four sides of the blade (22).