Cutting knife

Abstract

The utility model provides a cutting knife which comprises a shell, a cutting assembly and a stopping piece, a containing cavity is formed in the shell, the cutting assembly is arranged in the containing cavity and rotatably connected to the shell, the first end of the cutting assembly movably penetrates through the shell, and the second end of the cutting assembly movably penetrates through the shell. The stopping piece is arranged adjacent to the second end of the cutting assembly and used for stopping the second end of the cutting assembly. Thus, when external force acts on the second end of the cutting assembly, the cutting assembly rotates around the connecting point on the shell, the second end of the cutting assembly moves towards the stop piece till making contact with the stop piece, the stop piece stops the cutting assembly from continuing rotating, and at the moment, the first end of the cutting assembly extends outwards under the action of the lever; the extending length is controlled by the position of the stop piece, so that the length of the first end of the cutting assembly extending out of the shell every time is completely consistent, the consistent cutting effect is conveniently obtained, and the cutting yield of the cutting knife is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of cutting knives, and particularly relates to a cutting knife. BACKGROUND

[0002] The cutting knife generally comprises a shell and a blade, and the blade can be extended out of the shell for cutting materials; however, in the prior art, the length of the cutting knife extended out of the shell is generally not fixed, and for cutting materials with a predetermined thickness (for example, the indentation line on a strip-shaped cigarette box generally needs to be cut by a cutting knife with a predetermined thickness), it is easy to cause cutting failure and affect the cutting yield.

[0003] The prior art needs to be improved in view of the above problems. CONTENT OF THE UTILITY MODEL

[0004] The present disclosure provides a cutting knife to at least solve the above problems in the prior art.

[0005] To achieve the above object, the present disclosure provides the following technical solution: a cutting knife, comprising:

[0006] a shell, wherein an accommodation cavity is arranged in the shell;

[0007] a cutting assembly, which is arranged in the accommodation cavity and is rotatably connected to the shell, a first end of the cutting assembly movably penetrating the shell, and a second end of the cutting assembly movably penetrating the shell;

[0008] a stopper, which is arranged adjacent to the second end of the cutting assembly and is used for stopping the second end of the cutting assembly; wherein

[0009] When the cutting assembly is driven to rotate by an external force, the second end of the cutting assembly is in contact with the stopper, and the first end of the cutting assembly is extended out of the shell by a predetermined length for cutting materials.

[0010] In an implementable manner, the cutting assembly comprises:

[0011] a rotating body, which is arranged in the accommodation cavity and is rotatably connected to the shell;

[0012] a blade, which is connected to one end of the rotating body and movably penetrates the shell; wherein

[0013] one end of the rotating body and the blade are the first end of the cutting assembly.

[0014] In an implementable manner, the cutting assembly comprises:

[0015] a rotating body, which is arranged in the accommodation cavity;

[0016] A blade is connected to one end of the rotating body and rotatably connected to one end of the rotating body, and the blade is movably arranged in the housing for cutting materials; wherein,

[0017] One end of the rotating body and the blade are a first end of the cutting assembly.

[0018] In an embodiment, the blade is detachably connected to the rotating body.

[0019] In an embodiment, the blade and the rotating body are an integral structure, wherein the blade forms a blade head and the rotating body forms a blade body.

[0020] In an embodiment, the cutting assembly further comprises a pushing body connected to the other end of the rotating body and movably arranged in the housing, and the pushing body is used to bear the external force.

[0021] The pushing body and the other end of the rotating body are a second end of the cutting assembly.

[0022] In an embodiment, the rotating body has a trapezoidal structure, the blade protrudes from the inclined edge of one end of the rotating body, and the stopper is arranged near the other end of the rotating body and used to stop the inclined edge of the other end of the rotating body.

[0023] In an embodiment, the housing further comprises a plurality of mounting positions, the plurality of mounting positions are arranged along the length direction of the housing and located near the inclined edge of the other end of the rotating body, the stopper is detachably connected to the housing and can be mounted to any one of the mounting positions to abut against different positions of the inclined edge of the other end of the rotating body.

[0024] In an embodiment, the cutting knife further comprises a resilient member, a first end of the resilient member is connected to the cutting assembly, and the other end of the resilient member is connected to the housing; wherein,

[0025] The elastic force released by the resilient member is used to drive the cutting assembly to reset.

[0026] In an embodiment, the housing comprises a first housing and a second housing, the first housing and the second housing are detachably connected and form the accommodating cavity.

[0027] In the cutting knife, when an external force is applied to the second end of the cutting assembly, the cutting assembly rotates around the connecting point on the shell and moves the second end of the cutting assembly towards the stopper until the second end contacts the stopper, so that the cutting assembly is blocked from rotating further by the stopper, at this time, the first end of the cutting assembly is extended outwards by the lever, and the extension length is controlled by the position of the stopper, so that the length of the first end of the cutting assembly extended out of the shell is consistent every time, so as to obtain consistent cutting effect, thereby improving the cutting yield of the cutting knife.

[0028] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which:

[0030] In the drawings, identical or corresponding reference numerals indicate identical or corresponding parts.

[0031] ATTACHMENT Figure 1 A structure schematic diagram of a cutting knife in an embodiment of the present disclosure is shown;

[0032] ATTACHMENT Figure 2 A structure schematic diagram of a cutting knife in an embodiment of the present disclosure is shown; Figure 1 A structure schematic diagram of a cutting knife in an embodiment of the present disclosure is shown;

[0033] ATTACHMENT Figure 3 A front view of the cutting knife when the first end of the cutting assembly is extended by a predetermined length in an embodiment of the present disclosure is shown;

[0034] ATTACHMENT Figure 4 A front view of the cutting knife when the first end of the cutting assembly is extended by a predetermined length in an embodiment of the present disclosure is shown; Figure 2 A front view of the cutting knife when the first end of the cutting assembly is extended by a predetermined length in an embodiment of the present disclosure is shown;

[0035] Explanation of reference numerals in the drawings:

[0036] In the drawings: 10, cutting knife; 11, shell; 111, accommodating cavity; 112, first shell; 113, second shell; 12, cutting assembly; 121, rotating body; 1211, clamping groove; 122, blade; 123, pushing body; 13, stopper; 14, mounting position; 15, elastic member. DETAILED DESCRIPTION

[0037] In order to make the purposes, features and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present disclosure.

[0038] It should be understood that the steps shown above can be reordered, added or deleted. For example, the steps described in the present disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions of the present disclosure can be achieved, which are not limited herein.

[0039] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0040] The above-mentioned embodiments in the present disclosure will be described in detail below with reference to the drawings.

[0041] Please refer to Figure 1 and Figure 2 , Figure 1 The structure schematic diagram of the cutting knife 10 in the present embodiment is disclosed, Figure 2 The exploded structure schematic diagram of the cutting knife 10 in the present embodiment is disclosed; the present disclosure proposes the cutting knife 10 comprising a shell 11, the shell 11 is provided with a receiving cavity 111; a cutting assembly 12 is arranged in the receiving cavity 111 and is rotatably connected to the shell 11, the first end and the second end of the cutting assembly 12 are movably arranged in the shell 11, the first end of the cutting assembly 12 extends out of the shell 11 for cutting materials, the second end of the cutting assembly 12 extends out of the shell for external force to be applied to the second end, for example, the external force can be the finger pushing force of the operator; a stopper 13 is arranged adjacent to the second end of the cutting assembly 12 and is used to stop the cutting assembly 12 and make the first end of the cutting assembly 12 extend out of the shell 11 by a predetermined length for cutting the materials by a predetermined depth. Please refer to Figure 3 , Figure 3Figure 9 is a front view of the cutting knife 10 when the first end of the cutting assembly 12 extends a predetermined length, an external force is applied to the second end of the cutting assembly 12, and the cutting assembly 12 is driven to rotate by the external force. The second end contacts the stopper 13, and the first end extends a predetermined length out of the housing 11 to complete the cutting. For example, the material can be cigarette packaging paper, or the material can be hardboard for book covers, and the cutting is performed to a predetermined depth for creasing to facilitate folding.

[0042] Referring to Figure 1, the cutting knife 10 includes a housing 11 and a cutting assembly 12. Figure 2 The housing 11 refers to a bearing body that encloses the internal structure. The housing 11 can be designed in a split type for quick disassembly and assembly. Specifically, the housing 11 includes a first housing 112 and a second housing 113. The first housing 112 and the second housing 113 are detachably connected and form an accommodating cavity 111.

[0043] In the cutting knife 10 described above, when an external force is applied to the second end of the cutting assembly 12, the cutting assembly 12 rotates about the connection point on the housing 11 and moves the second end of the cutting assembly 12 toward the stopper 13 until the second end contacts the stopper 13. The stopper 13 blocks the cutting assembly 12 from continuing to rotate. At this time, the first end of the cutting assembly 12 is extended outward by the lever action, and the extension length is controlled by the position of the stopper 13. The length of the first end of the cutting assembly 12 that extends out of the housing 11 is consistent each time, which facilitates obtaining consistent cutting effects and improves the cutting yield of the cutting knife 10.

[0044] In some embodiments, the type of the stopper 13 is not limited. For example, the stopper 13 can be a screw, or the stopper 13 can be a rigid metal sheet.

[0045] Referring to Figure 1, the cutting knife 10 includes a housing 11 and a cutting assembly 12. Figure 2 Referring to Figure 1, the cutting knife 10 includes a housing 11 and a cutting assembly 12. Figure 1 In some embodiments, the cutting assembly 12 includes a rotating body 121 and a blade 122. The rotating body 121 is disposed in the accommodating cavity 111 and is rotatably connected to the housing 11. The blade 122 is connected to one end of the rotating body 121 and movably penetrates the housing 11. The one end of the rotating body 121 and the blade 122 are the first end of the cutting assembly 12.

[0046] Thus, when an external force is applied to the rotating body 121, the rotating body 121 is angularly displaced about the rotation axis, and the blade 122 fixed to the end of the rotating body 121 is moved along a preset trajectory. The length of the blade 122 extending out of the opening of the housing 11 is in a proportional relationship with the rotation angle of the rotating body 121. When the rotating body 121 is stopped by the stopper 13, the length of the blade 122 extending out of the housing 11 is accurately locked as a constant value. The rotation fulcrum formed by the rotating body 121 and the housing 11 provides a stable fulcrum for the movement of the blade 122, the opening of the housing 11 geometrically restricts the movement path of the blade 122, and the stopper 13 mechanically limits the maximum rotation angle of the rotating body 121, and the three together constitute a closed-loop control system of the extending length of the blade 122.

[0047] Specifically, the rotating body 121 is rotationally connected to the housing 11 through a rotation axis.

[0048] Please refer to Figure 2 In some embodiments, the cutting assembly 12 includes a rotating body 121 and a blade 122. The rotating body 121 is arranged in the accommodating cavity 111, the blade 122 is rotationally connected to one end of the rotating body 121 and the housing 11, and the blade 122 is movably arranged in the housing 11 for cutting materials. One end of the rotating body 121 and the blade 122 are the first end of the cutting assembly 12.

[0049] Thus, when an external force is applied to the rotating body 121, the rotating body 121 and the blade 122 are angularly displaced about the rotation axis between the blade 122 and the housing 11, and the blade 122 fixed to the end of the rotating body 121 is moved along a preset trajectory. The length of the blade 122 extending out of the opening of the housing 11 is in a proportional relationship with the rotation angle of the rotating body 121. When the rotating body 121 is stopped by the stopper 13, the length of the blade 122 extending out of the housing 11 is accurately locked as a constant value. The rotation fulcrum formed by the rotating body 121 and the housing 11 provides a stable fulcrum for the movement of the blade 122, the opening of the housing 11 geometrically restricts the movement path of the blade 122, and the stopper 13 mechanically limits the maximum rotation angle of the rotating body 121, and the three together constitute a closed-loop control system of the extending length of the blade 122.

[0050] Specifically, the rotating body 121 is rotationally connected to the housing 11 through a rotation axis.

[0051] In some embodiments, the blade 122 is detachably connected to the rotating body 121. Thus, the blade 122 is fixed to one end of the rotating body 121 through a detachable connection structure. When the blade 122 is worn or cracked due to long-term use, the operator can separate the blade 122 from the rotating body 121 by releasing the connection structure, and then replace the new blade 122 and re-fix it, improving the convenience of replacing the blade 122.

[0052] Please refer toFigure 4 , Figure 4 Disclosed is Figure 1 a magnified view of the middle part IV; in some implementable manners, the detachable connection between the blade 122 and the rotating body 121 is not limited. Exemplarily, the detachable connection between the blade 122 and the rotating body 121 is achieved through clamping, specifically, a clamping groove 1211 is formed on the rotating body 121 and is matched with the blade 122, when the blade 122 is clamped into the clamping groove 1211 on the rotating body 121, the clamping between the blade 122 and the rotating body 121 is achieved; or, the detachable connection between the blade 122 and the rotating body 121 is achieved through screws; or, the detachable connection between the blade 122 and the rotating body 121 is achieved through clamping through the clamping groove 1211 and further locking and fixing through screws, so as to improve the firmness between the blade 122 and the rotating body 121.

[0053] In some embodiments, the blade 122 and the rotating body 121 are integrated, wherein the blade 122 forms a blade head and the rotating body 121 forms a blade body.

[0054] In this way, the integrated design of the blade head and the blade body makes it impossible for the relative displacement or looseness between the two. During the cutting process, when the external force is transmitted to the blade head through the blade body, due to the overall rigidity of the connecting structure, the length of the blade head extending out of the shell 11 will not change due to the wear of the split connecting member or the assembly error. The force transmission path of the blade head and the blade body is continuous and stable, which ensures that the length of the blade head extending out of the shell 11 is consistent with the preset value during each cutting.

[0055] Exemplarily, the blade head and the blade body can be integrally formed by the same metal material through a mold, so that the two synchronously respond to the external force during the cutting action, avoiding the cutting depth deviation caused by the looseness of the split structure.

[0056] Please refer to Figure 2 In some embodiments, the cutting assembly 12 further comprises a pushing body 123, the pushing body 123 is connected to the other end of the rotating body 121 and movably penetrates the shell 11, and the pushing body 123 is used for bearing the external force; the other end of the pushing body 123 and the rotating body 121 is the second end of the cutting assembly 12. Exemplarily, the material of the pushing body 123 is plastic or rubber.

[0057] When an external force is applied to the pusher 123, the pusher 123 moves along the movable channel on the housing 11, and drives the rotating body 121 to rotate around its rotation axis. When the rotating body 121 is driven by the pusher 123, the inclined surface or the protruding structure at the other end of the rotating body 121 gradually approaches the stopper 13. When the displacement of the pusher 123 reaches the maximum value, the second end of the rotating body 121 forms a rigid contact with the stopper 13. At this time, the rotation of the rotating body 121 is forcibly limited, and the length of the blade 122 protruding from the housing 11 is accurately limited within a predetermined range, thereby achieving the end position control of the cutting assembly 12 during rotation.

[0058] Referring to Figure 2 In some embodiments, the rotating body 121 has a trapezoidal structure, the blade 122 protrudes from the inclined side of one end of the rotating body 121, and the stopper 13 is arranged near the other end of the rotating body 121 and is used to stop the inclined side of the other end of the rotating body 121.

[0059] When an external force is applied to the rotating body 121, the rotating body 121 rotates around the axis, and the inclined side of the other end of the rotating body 121 moves along the rotation path until it contacts the stopper 13. At this time, the rotation angle of the rotating body 121 is forcibly limited by the contact surface between the inclined side and the stopper 13, resulting in that the end point of the movement trajectory of the protruding end of the blade 122 is accurately locked. Since there is a geometric relationship between the length of the inclined side of the protruding end of the blade 122 and the length of the inclined side of the other end of the rotating body 121, the length of the blade 122 protruding from the housing 11 can be directly controlled by limiting the rotation angle of the rotating body 121. The two inclined sides of the trapezoidal structure form a symmetrical constraint, so that the rotating body 121 can maintain balanced force when contacting the stopper 13, thereby avoiding that the rotating body 121 is damaged due to unilateral concentrated force.

[0060] In some embodiments, the shape of the blade 122 is not limited, and the shape of the blade 122 can be triangular, rhombic, polygonal, or the like.

[0061] Referring to Figure 2 In some embodiments, the housing 11 further has a plurality of mounting positions 14, the plurality of mounting positions 14 are arranged along the length direction of the housing 11 and are located near the inclined side of the other end of the rotating body 121, the stopper 13 is detachably connected with the housing 11 and can be mounted to any one of the mounting positions 14 to abut against different positions of the inclined side of the other end of the rotating body 121.

[0062] Thus, when the stopper 13 is installed at different installation positions 14, the contact position of the stopper 13 with the bevel of the rotating body 121 changes along the length direction of the bevel. During the rotation of the rotating body 121, the height difference of the contact points of the bevel with the stopper 13 limits the maximum rotation angle of the rotating body 121. Since the length of the blade 122 extending out of the housing 11 has a geometric relationship with the rotation angle of the rotating body 121, by adjusting the installation position 14 of the stopper 13, the maximum length of the blade 122 extending out of the housing 11 can be controlled. For example, when the stopper 13 is installed at the installation position 14 close to the rotating body 121, the rotation angle of the rotating body 121 is small, and the extending length of the blade 122 is short; when the stopper 13 is installed at the installation position 14 far away from the rotating body 121, the rotation angle of the rotating body 121 is increased, and the extending length of the blade 122 is correspondingly increased.

[0063] Further, the stopper 13 and the housing 11 are connected by screws.

[0064] Please refer to Figure 2 In some embodiments, the cutting knife 10 further comprises a resilient member 15, one end of the resilient member 15 is connected to the cutting assembly 12, and the other end of the resilient member 15 is connected to the housing 11. The elastic force released by the resilient member 15 is used to drive the cutting assembly 12 to reset. For example, the resilient member 15 can be a spring.

[0065] Thus, when the cutting assembly 12 is driven to rotate by an external force to make the blade 122 extend out of the housing 11 to cut, the resilient member 15 deforms and stores elastic force due to the displacement of the cutting assembly 12. After the cutting is completed, the external force disappears, the resilient member 15 releases the elastic force and drives the cutting assembly 12 to rotate reversely, so that the blade 122 is retracted into the housing 11 and returns to the initial position, so as to facilitate the continuous operation of the cutting knife 10 to perform the cutting work, thereby improving the convenience of operation.

[0066] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A cutting blade, characterized in that, The cutting blade includes: A housing, wherein a receiving cavity is provided within the housing; A cutting assembly is disposed within the receiving cavity and rotatably connected to the housing. A first end of the cutting assembly is movably inserted through the housing, and a second end of the cutting assembly is movably inserted through the housing. A stop member is disposed adjacent to the second end of the cutting assembly and is used to stop the second end of the cutting assembly; wherein, When the cutting assembly is driven to rotate by an external force, the second end of the cutting assembly contacts the stop member, and the first end of the cutting assembly extends out of the housing by a predetermined length for cutting materials.

2. The cutting blade according to claim 1, characterized in that, The cutting component includes: A rotating body is disposed within the receiving cavity and rotatably connected to the housing; A blade, connected to one end of the rotating body, is movably inserted into the housing; wherein, One end of the rotating body and the blade constitute the first end of the cutting assembly.

3. The cutting blade according to claim 1, characterized in that, The cutting component includes: A rotating body is disposed within the receiving cavity; A blade is connected to one end of the rotating body and rotatably connected to one end of the rotating body, and the blade is movably inserted into the housing for cutting materials; wherein, One end of the rotating body and the blade form the first end of the cutting assembly.

4. The cutting blade according to claim 2 or 3, characterized in that, The blade is detachably connected to the rotating body.

5. The cutting blade according to claim 2 or 3, characterized in that, The blade and the rotating body are an integral structure, wherein the blade forms the cutting head and the rotating body forms the blade body.

6. The cutting blade according to claim 2 or 3, characterized in that, The cutting assembly also includes a pusher, which is connected to the other end of the rotating body and movably passes through the housing, and the pusher is used to bear the external force; The other end of the pushing body and the rotating body is the second end of the cutting assembly.

7. The cutting blade according to claim 2 or 3, characterized in that, The rotating body has a trapezoidal structure, the blade protrudes from the inclined side of one end of the rotating body, and the stop is located near the other end of the rotating body and is used to stop the inclined side of the other end of the rotating body.

8. The cutting blade according to claim 7, characterized in that, The housing is also provided with a plurality of mounting positions, which are spaced apart along the length of the housing and located near the inclined side of the other end of the rotating body. The stop member is detachably connected to the housing and can be installed at any of the mounting positions to abut against different positions on the inclined side of the other end of the rotating body.

9. The cutting blade according to claim 1, characterized in that, The cutting blade further includes an elastic element, a first end of which is connected to the cutting assembly, and the other end of which is connected to the housing; wherein... The elastic force released by the elastic element is used to drive the cutting assembly to reset.

10. The cutting blade according to claim 1, characterized in that, The housing includes a first housing and a second housing, the first housing and the second housing being detachably connected and enclosing the receiving cavity.

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