CN210500359U - Cutting tool - Google Patents

Abstract

A cutting tool relates to the technical field of tools and comprises a shell, a blade, a fixing structure, a rotating structure and a push handle, wherein the blade is of a polygonal structure and is provided with a plurality of cutting edges; the shell is provided with an inner cavity, a guide groove is formed in the shell along the length direction, the fixing structure and the blade are located in the inner cavity, and the blade is mounted on the fixing structure; the fixed structure is respectively connected with the push handle and the rotating structure, the push handle is assembled in the guide groove in a sliding mode, the push handle can move along the length direction of the guide groove to drive the blade to extend out of the inner cavity, a part of area of the rotating structure extends out of the guide groove, and the rotating structure is used for driving the blade to rotate through the fixed structure. The cutting blade can use a rotating structure to drive the blade to rotate so as to replace the edge angle, and the process of replacing the edge angle is relatively safer.

Description

Cutting tool

Technical Field

The utility model relates to a cutter field particularly, relates to a cutting tool.

Background

The knife typically includes a housing and a blade disposed within the housing that performs a cutting operation through a nose corner thereof. After the blade angle is used many times, it will become worn and dull, thereby interfering with the cutting operation, which requires blade replacement. In order to reduce the number of times of replacing the blade, at present, there is a strip-shaped blade, in which a plurality of grooves are formed along the length direction of the blade, the extending direction of the grooves is inclined relative to the length direction of the blade, and the plurality of grooves divide the blade into a plurality of parts along the length direction. After the front edge angle is worn, the user can break the blade by force, the blade is broken along the groove, and a new edge angle is exposed at the broken part, so that the blade can be used continuously.

However, in the process of breaking the blade, the blade may have a moving state of bouncing and shaking in the process of breaking the blade, so that the hand of the user is easily scratched.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cutting tool, it can rotate the blade through rotating-structure to change the sword angle, the operation of changing the sword angle is more safe.

The embodiment of the utility model is realized like this:

a cutting tool, comprising: the blade is of a polygonal structure and is provided with a plurality of cutting edges; the shell is provided with an inner cavity, a guide groove is formed in the shell along the length direction, the fixing structure and the blade are located in the inner cavity, and the blade is mounted on the fixing structure; the fixed structure is respectively connected with the push handle and the rotating structure, the push handle is assembled in the guide groove in a sliding mode, the push handle can move along the length direction of the guide groove to drive the blade to extend out of the inner cavity, a part of area of the rotating structure extends out of the guide groove, and the rotating structure is used for driving the blade to rotate through the fixed structure.

In a preferred embodiment of the present invention, a plurality of positioning holes are disposed on a side of the push handle facing the inner cavity, the fixing structure includes a fixing plate, at least one protrusion is disposed on the fixing plate, and the protrusion can be inserted into the positioning holes; rotating-structure includes the pivot, it is provided with the through-hole to push away the handle, the pivot is passed behind the through-hole with fixed knot constructs and connects, the pivot can be followed the axial displacement and the rotation of through-hole, the cover is equipped with the spring in the pivot, the both ends of spring respectively with push away the handle with the fixed plate rotates and connects.

In a preferred embodiment of the present invention, the blade is a regular polygon, and the circle center of the circumscribed circle of the blade is located on the axis of the rotating shaft.

In a preferred embodiment of the present invention, the blade has a regular triangle structure.

In the preferred embodiment of the present invention, the protrusion is a cylindrical structure, the positioning hole includes a first section and a second section that are connected to each other, the first section is located on one side of the blade away from the second section, the first section is a circular hole, the diameter of the first section is greater than or equal to the diameter of the protrusion, the second section is a circular truncated cone-shaped hole, and the diameter of the second section is gradually increased from one end connected to the first section to the other end.

In a preferred embodiment of the present invention, the blade is provided with a base made of a magnetic material, the fixing structure is provided with a mounting groove toward one side of the blade, a magnetic member is provided in the mounting groove, and the magnetic member can attract the base so that the base extends into the mounting groove.

In the preferred embodiment of the present invention, the housing is provided with a storage for placing the spare blade, the storage is communicated with the inner cavity, and the fixing plate can be moved to the discharge opening of the storage.

In the preferred embodiment of the present invention, the storage compartment is provided with a feed inlet on one side of the inner cavity, the feed inlet is covered with a cover plate, and the cover plate is connected to the housing joint.

In the preferred embodiment of the present invention, the inner cavity of the housing is provided with a foldable gasket, one end of the foldable gasket is connected to the rear portion of the housing, and the other end is connected to the fixing structure.

The utility model discloses in the preferred embodiment, the folding gasket includes a plurality of plastic cushion, relative both sides are provided with spout and slider respectively on the plastic cushion, the slider of plastic cushion stretches into the spout of adjacent plastic cushion, and is adjacent through the cooperation slip assembly connection of spout and slider between the plastic cushion.

The embodiment of the utility model provides a beneficial effect is:

in the use process, the user promotes and pushes away the handle in order to drive fixed knot to construct and remove along the length direction of guide way, because the blade is connected with fixed knot structure, consequently can drive the handle of a knife and remove along the length direction of casing, after the blade removed the tool bit, can stretch out by the inner chamber, and one of them basil of blade is located operating position this moment, can use the basil that is located operating position of blade to carry out cutting operation. When the cutting edge of the blade is worn, the rotating structure drives the fixing structure to rotate, so that the blade is driven to rotate, and the other cutting edge on the blade rotates to a working position. So set up, can rotate the blade through rotating-structure to the cutting edge of changing the blade need not to break the blade and just can use new cutting edge to carry out cutting operation, and it is safer to change the cutting edge.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a cutting tool according to an embodiment of the present invention;

fig. 2 is a first cross-sectional view of a cutting tool according to an embodiment of the present invention;

fig. 3 is a second cross-sectional view of the cutting tool according to the embodiment of the present invention;

fig. 4 is a schematic structural view of a positioning hole in a cutting tool according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating the distribution of positioning holes on the push handle in the cutting tool according to the embodiment of the present invention;

fig. 6 is a schematic view illustrating the distribution of the protrusions on the fixing plate in the cutting tool according to the embodiment of the present invention;

fig. 7 is a schematic structural diagram of a blade in a cutting tool according to an embodiment of the present invention.

In the figure:

10-a housing; 11-a guide groove; 12-storage; 13-the sleeve body; 14-latch; 20-a push handle; 21-a connecting part; 22-a pushing part; 23-a through hole; 24-positioning holes; 241-first section; 242-a second segment; 30-a blade; 31-a base; 32-edge angle; 41-fixing plate; 42-projection; 43-a mounting groove; 50-a rotating structure; 51-a rotating shaft; 52-rotating the head; 53-a spring; 60-plastic soft cushion.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

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, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the cutting tool or element referred to must have a specific position, be constructed and operated in a specific position, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

Referring to fig. 1 to 3, the present embodiment provides a cutting tool, including: housing 10, blade 30, fixed structure, rotating structure 50 and push handle 20, wherein: the blade 30 is a polygonal structure having a plurality of cutting edges 32; the shell 10 is provided with an inner cavity, the shell 10 is provided with a guide groove 11 along the length direction, the fixing structure and the blade 30 are positioned in the inner cavity, and the blade 30 is arranged on the fixing structure; the fixed structure is connected with push handle 20 and rotating-structure 50 respectively, pushes away handle 20 and sliding assembly in guide way 11, pushes away handle 20 and can move along the length direction of guide way 11 to drive blade 30 and stretch out the inner chamber, rotating-structure 50 has the subregion to stretch out guide way 11, and rotating-structure 50 is used for driving blade 30 to rotate through fixed structure.

Because the blade 30 is polygonal structure, has a plurality of edges 32, can drive the blade 30 to rotate by rotating the rotating structure 50, thereby replacing the edges 32 at the working position, and has high safety factor and convenient and quick operation.

Preferably, the blade 30 has a regular polygon structure, and the circle center of the circumscribed circle of the blade 30 is located on the axis of the rotating shaft 51. With this arrangement, the space required during rotation of the blade 30 is an area within its tangent circle, and the space is smaller, so that the housing 10 can be made more compact.

In a preferred embodiment of this embodiment, as shown in fig. 1 and 7, the blades 30 are regular triangular in configuration, with one blade 30 having three cutting edges 32, and the next cutting edge 32 is changed to the operative position with each 120 ° rotation. Because the blade 30 is in a regular triangle structure, the angles of the blade 30 are 60 degrees, which is more beneficial for the cutting operation.

As shown in fig. 2 and 3, in a specific embodiment of the present embodiment, a plurality of positioning holes 24 are provided on a side of the push handle 20 facing the inner cavity, the fixing structure includes a fixing plate 41, at least one protrusion 42 is provided on the fixing plate 41, the protrusion 42 can be inserted into the positioning hole 24, specifically, the number of the positioning holes 24 is at least equal to the number of the cutting edges 32 of the blade 30, so that the protrusion 42 corresponds to one positioning hole 24 when each cutting edge 32 is in the working position; the rotating structure 50 comprises a rotating shaft 51, the push handle 20 is provided with a through hole 23, the rotating shaft 51 penetrates through the through hole 23 and then is connected with the fixed structure, the rotating shaft 51 can move and rotate along the axial direction of the through hole 23, a spring 53 is sleeved on the rotating shaft 51, and two ends of the spring 53 are respectively connected with the push handle 20 and the fixed plate 41 in a rotating manner. The spring 53 prevents the protrusion 42 from being disengaged from the positioning hole 24.

Further, the rotating structure 50 further includes a rotating head 52, the rotating head 52 is connected to one end of the rotating shaft 51 extending out of the casing 10, the diameter of the rotating head 52 is larger than that of the rotating shaft 51, and the side surface of the rotating head 52 is provided with anti-slip lines, so that the rotating shaft 51 is driven to rotate by the rotating head 52.

Specifically, fig. 2 is a schematic diagram of the spring 53 in the initial position, and fig. 3 is a schematic diagram of the spring 53 when the fixed plate 41 is pushed by the rotating shaft 51 and the force is accumulated. In the initial state, the spring 53 exerts a pulling force on both the fixing structure and the push handle 20, i.e. so that the protrusion 42 of the fixing structure can always be inserted into the positioning hole 24. When the rotating shaft 51 is pushed to the inner cavity side, the rotating shaft 51 pushes the fixing plate 41 to drive the blade 30 to move away from the push handle 20, so that the protrusion 42 is disengaged from the positioning hole 24, and the spring 53 stretches and stores force. After rotating the fixing plate 41, the position of the protrusion 42 is changed, and when rotating the other edge 32 of the blade 30 to the working position, the position of the protrusion 42 corresponds to the position of the other positioning hole 24. After releasing the hand, the spring 53 drives the fixing plate 41 to move toward the pushing handle 20, and the protrusion 42 is inserted into the other positioning hole 24 corresponding to the protrusion.

As shown in fig. 5 and 6, when the blade 30 has a regular triangle structure, three positioning holes 24 are provided on the push handle 20, and three protrusions 42 are provided on the fixing plate 41, and the three protrusions 42 correspond to the three positioning holes 24 one by one. For convenience of description, the three cutting edges 32 of the insert 30 are referred to as a first cutting edge, a second cutting edge, and a third cutting edge, the three protrusions 42 are referred to as a first protrusion, a second protrusion, and a third protrusion, and the three positioning holes 24 are referred to as a first positioning hole, a second positioning hole, and a third positioning hole, respectively. When the first cutting edge is located at the working position, the first protrusion extends into the first positioning hole, the second protrusion extends into the second positioning hole, and the third protrusion extends into the third positioning hole. When the second cutting edge is rotated to the working position, the first protrusion corresponds to the second positioning hole, the second protrusion corresponds to the third positioning hole, and the third protrusion corresponds to the first positioning hole. When the third cutting edge is rotated to the working position, the first protrusion corresponds to the third positioning hole, the second protrusion corresponds to the first positioning hole, and the third protrusion corresponds to the second positioning hole.

Of course, in another arrangement, the number of the protrusions 42 may be one, and when the first cutting edge is in the working state, the protrusions 42 are inserted into the first positioning holes; when the second cutting edge is in a working state, the protrusion 42 is inserted into the second positioning hole; when the third cutting edge is in the working state, the projection 42 is inserted into the third positioning hole.

As shown in fig. 4, in a preferred embodiment of this embodiment, the protrusion 42 is a cylindrical structure, the positioning hole 24 includes a first section 241 and a second section 242 that are communicated with each other, the first section 241 is located on a side of the second section 242 away from the blade 30, the first section 241 is a circular hole, an aperture of the first section 241 is greater than or equal to a diameter of the protrusion 42, the second section 242 is a circular truncated cone-shaped hole, and an aperture of the second section 242 gradually increases from one end connected with the first section 241 to the other end. The arrangement is such that after rotation, even if the protrusion 42 is not completely aligned with the first segment 241, it can be located in the opening range of the second segment 242, and in the process that the spring 53 pulls the fixing plate 41 to move towards the direction close to the push handle 20, the protrusion 42 firstly extends into the second segment 242, and slides inwards along the side wall of the second segment 242, and finally enters the first segment 241, and after the protrusion 42 is inserted into the first segment 241, the fixing structure is fixed relative to the push handle 20.

As shown in fig. 1 and 5, in one embodiment of the present application, the push handle 20 includes a connecting portion 21 and a pushing portion 22 connected to each other, and the connecting portion 21 is connected to a side of the pushing portion 22 facing the cutter head. Specifically, the side of the cutting tool that can extend beyond the blade 30 is the tool tip, and the other side is the tool tail. The positioning hole 24 and the through hole 23 are both arranged on the connecting portion 21, the width of the connecting portion 21 is smaller than that of the pushing portion 22, and the pushing portion 22 is in sliding fit with the guide groove 11. During use, the fixed structure, the rotating structure 50 and the blade 30 are moved by pushing the pushing part 22. With the arrangement, the push handle 20 is slidably assembled with the guide groove 11 through the push portion 22 and is connected with the fixed structure and the rotating structure 50 through the connecting portion 21, and the width of the connecting portion 21 is smaller than that of the push portion 22, so that the blade 30 is shielded less, and the blade 30 can be exposed in a larger area conveniently.

Preferably, as shown in fig. 1, a skidproof bump is provided on the side of the pushing part 22 facing away from the rotating structure 50.

Further, as shown in fig. 1, two opposite sides of the guide groove 11 along the length direction are respectively provided with a latch 14, the latches 14 are sequentially arranged along the side wall of the guide groove 11, one side of each latch 14 facing the guide groove 11 is an arc-shaped surface, and an arc-shaped slot is formed between every two adjacent latches 14. The push handle 20 further includes a clamping structure, the clamping structure is connected below the pushing portion 22 (the clamping structure is shielded by the pushing portion 22, and therefore is not shown in fig. 1), the clamping structure includes two clamping jaws, the two clamping jaws correspond to the two rows of latches 14 respectively, the clamping jaws include a rod portion and a clamping head portion, one end of the rod portion is connected with the bottom of the pushing portion 22, the other end of the rod portion is connected with the clamping head portion, and a certain gap is formed between the rod portions of the two clamping jaws. The side wall of the clamping head part is a curved surface, and the clamping head part protrudes towards the direction of the latch 14 relative to the rod part and can be clamped at the clamping groove between the adjacent latches 14. In the process that the push handle 20 moves along the guide groove 11, the push handle 20 is subjected to a large external force applied by a user, and the two jaws deform to a certain degree under the action of the latch 14, so that the push handle 20 can move along the guide groove 11. When the push handle 20 stops pushing, the pawl engages the latch 14, thereby preventing the push handle 20 from moving when the blade is used to cut.

Further, the pushing portion 22 of the pushing handle 20 includes two parts, which are respectively called a first pushing section and a second pushing section, the first pushing section is fixedly connected with the connecting portion 21, one ends of the rod portions of the two claws, which are away from the clamping head, are respectively connected with the first pushing section, the second pushing section is slidably assembled with the first pushing section, and a partial region of the second pushing section is located below the first pushing section and is opposite to a region between the rod portions of the two claws. A partial region of the second pushing section protrudes out of the housing. In the use, can remove the second propelling movement section to the direction of keeping away from first propelling movement section to make the second propelling movement section be located the region of first propelling movement section below and stretch into the region between the pole portion of two jack catchs, thereby can avoid two jack catchs to taking place deformation to the direction that is close to the other side, avoid two jack catchs promptly to get into next draw-in groove because of deformation, thereby with the jack catch block at current position, fix current position with blade 30 more for stabilizing.

To facilitate replacement of the blade 30, the blade 30 is removably attached to the fixed structure.

Preferably, the blade 30 is connected to the fixed structure by magnetic attraction. Specifically, as shown in fig. 2, 3, 6 and 7, the blade 30 is provided with a base 31 made of a magnetic material, a mounting groove 43 is provided on a side of the fixing structure facing the blade 30, and a magnetic member is provided in the mounting groove 43 and can attract the base 31 so that the base 31 extends into the mounting groove 43. So configured, it is convenient to install and remove the blade 30.

An opening is provided at one side of the cavity to facilitate the extension of the blade 30 out of the housing 10, and preferably, an opening is also provided at the side of the guide groove 11 to facilitate the extension of a partial area of the push handle 20. When the blade 30 is moved a certain distance towards the cutter head, the edge 32 area of the blade 30 extends out of the cutter head, when the blade 30 needs to be replaced, the blade 30 is continuously pushed outwards, so that the whole blade 30 moves to the outer side of the shell 10 by the cutter head, and then the blade 30 is taken down from the fixing mechanism by a user. The blade 30 and the fixing mechanism are magnetically attracted, so that the separation is convenient. The blade 30 and the fixed structure.

When replacing a blade 30, it is possible to manually replace the blade 30 with a new one when removing the previous blade 30 from the cutting head.

Alternatively, as shown in fig. 1, in a preferred embodiment, the housing 10 is provided with a storage bin 12 for placing the spare blade 30, the storage bin 12 is communicated with the inner cavity, and the fixing plate 41 can move to the discharge port of the storage bin 12. So set up, after taking off the blade 30 on the fixed knot structure, use and push away handle 20 and remove the fixed knot structure to the sword tail to make the fixed knot structure correspond with the discharge gate of warehouse 12, at this moment, owing to be provided with the magnetic part in the mounting groove 43 of fixed knot structure, the magnetic part attracts the base 31 that is located the reserve blade 30 in warehouse 12, thereby makes base 31 stretch into mounting groove 43, with the fixed knot structure is installed to blade 30.

As shown in fig. 6 and 7, the base 31 has the same structural shape as the mounting groove 43. In fig. 6, the mounting groove 43 includes a middle circular groove body and an extending groove body which is communicated with the circular groove body and is located at the edge of the circular groove body and radially arranged outwards. In fig. 7, the base 31 also includes a central protrusion corresponding to the mounting groove 43, and the periphery of the central protrusion is provided with an extension protrusion connected to the central protrusion, and the extension protrusion has the same shape as the extension groove. When the base 31 extends into the mounting groove 43, the central protrusion extends into the central slot, and the extension protrusion extends into the extension slot.

Of course, the shape of the mounting groove 43 and the base 31 is not limited to the above configuration, and other configurations are possible. Specifically, the mounting groove 43 is a non-cylindrical groove body and the base 31 is a non-cylindrical projection. For example, the mounting groove 43 may be a rectangular groove, and the base 31 may be a rectangular block structure.

In an optional implementation manner of this embodiment, a feeding port is disposed on a side of the storage bin 12 away from the inner cavity, and a cover plate is covered at the feeding port and is clamped with the housing 10. So configured, when the blade 30 in the cartridge 12 is mounted to the fixed structure, the cover may be opened to place another spare blade 30 into the cartridge 12. Further, a limiting groove is arranged on the cover plate, the shape of the limiting groove is the same as that of the blade 30, and after the blade 30 is placed in the limiting groove, the angle of the base 31 on the blade 30 is just equal to the angle of the mounting groove 43 on the fixed structure. That is, when the magnetic member in the mounting groove 43 attracts the base 31, the base 31 moves in a straight line and is directly inserted into the mounting groove 43.

Alternatively, in another possible embodiment, a feed inlet is provided on a side of the storage bin 12 facing away from the knife edge, and a cover body is provided at the feed inlet and is clamped with the housing 10. So configured, the spare blade 30 may be placed into the magazine 12 in a lateral direction.

As shown in fig. 1-3, the inner cavity of the housing 10 is provided with a folding gasket, one end of the folding gasket is connected with the tail of the housing 10, and the other end is connected with the fixing structure. So configured, when the blade 30 is moved to the cutter head, the folded gasket is gradually opened to be shielded at the guide groove 11. On one hand, dust falling in the guide groove 11 can be avoided, and on the other hand, the whole cutter is more attractive. Patterns can be arranged on the folding gaskets, and when the folding gaskets are completely unfolded, the folding gaskets can present complete pictures or sentences.

The folding shim may be a thin rigid material, or alternatively, the folding shim may be a soft material.

Preferably, the folding pad comprises a plurality of plastic cushions 60, the two opposite sides of the plastic cushions 60 are respectively provided with a sliding groove and a sliding block, the sliding block of the plastic cushion 60 extends into the sliding groove of the adjacent plastic cushion 60, and the adjacent plastic cushions 60 are connected with each other through the sliding grooves and the sliding blocks in a matched sliding assembly manner.

Further, as shown in fig. 1, the other outer surfaces of the housing 10 except the region opposite to the guide groove 11 are coated with the covering 13, the outer contour of the covering 13 is streamline-shaped, so that the covering is convenient to grip, and the covering 13 can be made of flexible material, so that the gripping comfort can be improved. The surface of the sleeve body 13 can be provided with anti-skid convex points.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A cutting tool, comprising: the blade is of a polygonal structure and is provided with a plurality of cutting edges; the shell is provided with an inner cavity, a guide groove is formed in the shell along the length direction, the fixing structure and the blade are located in the inner cavity, and the blade is mounted on the fixing structure; the fixed structure is respectively connected with the push handle and the rotating structure, the push handle is assembled in the guide groove in a sliding mode, the push handle can move along the length direction of the guide groove to drive the blade to extend out of the inner cavity, a part of area of the rotating structure extends out of the guide groove, and the rotating structure is used for driving the blade to rotate through the fixed structure.

2. The cutting tool according to claim 1, wherein the push handle is provided with a plurality of positioning holes on a side facing the inner cavity, and the fixing structure comprises a fixing plate, and at least one protrusion is provided on the fixing plate and can be inserted into the positioning holes; rotating-structure includes the pivot, it is provided with the through-hole to push away the handle, the pivot is passed behind the through-hole with fixed knot constructs and connects, the pivot can be followed the axial displacement and the rotation of through-hole, the cover is equipped with the spring in the pivot, the both ends of spring respectively with push away the handle with the fixed plate rotates and connects.

3. The cutting tool of claim 2, wherein the blade has a regular polygon shape, and the circle circumscribed about the blade has a center located on the axis of the shaft.

4. The cutting tool of claim 3, wherein the blade is of a regular triangular configuration.

5. The cutting tool according to claim 2, wherein the protrusion has a cylindrical structure, the positioning hole comprises a first section and a second section which are communicated with each other, the first section is located on a side of the second section away from the blade, the first section is a circular hole, the diameter of the first section is greater than or equal to the diameter of the protrusion, the second section is a circular truncated cone-shaped hole, and the diameter of the second section gradually increases from one end connected with the first section to the other end.

6. The cutting tool according to claim 1 wherein said blade is provided with a base of magnetic material, said fixed structure being provided with a mounting slot on a side thereof facing said blade, said mounting slot being provided with a magnetic element capable of attracting said base so that said base extends into said mounting slot.

7. The cutting tool of claim 1, wherein the housing is provided with a magazine for holding spare blades, the magazine being in communication with the interior cavity, the securing structure being movable to a discharge opening of the magazine.

8. The cutting tool according to claim 7, wherein a feed opening is formed in one side of the storage bin, which faces away from the inner cavity, a cover plate is covered at the feed opening, and the cover plate is clamped with the shell.

9. The cutting tool according to claim 1 wherein the interior cavity of the housing is provided with a folding gasket, one end of the folding gasket being connected to the rear portion of the housing and the other end being connected to the securing structure.

10. The cutting tool according to claim 9, wherein the folding shim comprises a plurality of plastic cushions, the two opposite sides of each plastic cushion are respectively provided with a sliding groove and a sliding block, the sliding blocks of the plastic cushions extend into the sliding grooves of the adjacent plastic cushions, and the adjacent plastic cushions are connected with each other in a sliding assembly mode through the matching of the sliding grooves and the sliding blocks.

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