Blade separating structure

Abstract

The utility model discloses a cutting edge separating structure which comprises a rotating shaft, a fixed cutting edge, a pressing block and a wrench. The fixed blade is fixed on the rotating shaft, the pressing block is fixed at the position, close to the shaft end, of the rotating shaft, a convex part is arranged at the position, far away from the rotating shaft, of the pressing block, and an abutting surface is arranged on the side, facing the fixed blade, of the convex part; the middle section of the wrench is rotatably fixed on a pivoting shaft parallel to the rotating shaft; a concave part is arranged at the position, corresponding to the convex part, of the wrench; a rolling piece is arranged at the end opening, located on one side of the abutting face, of the concave part, and the rolling piece abuts against the abutting face. When the clamping is released, the handle is pressed downwards to rotate around the pivoting shaft, and the rolling piece at the end opening of the concave part extrudes the pressing surface of the convex part, so that the pressing block swings downwards by a certain angle, the pressing block drives the rotating shaft to rotate, the rotating shaft drives the fixed blade to swing, and the fixed blade overturns downwards by a certain angle; a large gap exists between the fixed cutting edge and the movable cutting edge which are turned over, and clamping releasing of the movable cutting edge and the fixed cutting edge is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal printers, in particular to a blade separation structure. Background Art

[0002] The thermal printer's movement module is equipped with a cutter. The cutter consists of a moving blade, a moving blade mounting part, a moving blade driving part, a fixed blade, and a fixed blade mounting frame. When printing is completed, the moving blade is driven by the moving blade driving part to extend and shear with the fixed blade, thereby cutting the paper; after cutting the paper, the moving blade returns to the initial position and waits for the next paper cutting command.

[0003] In actual use, the problem of the moving blade and the fixed blade getting stuck occasionally occurs. The force of the moving blade drive unit is not enough to drag the moving blade back, causing the moving blade to be unable to return to its initial position, resulting in failure to cut paper, resulting in printing failure, and bringing a certain bad experience to users. Utility Model Content

[0004] To this end, the utility model provides a blade separation structure to solve one or more of the above problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A blade separation structure comprises a rotating shaft, a fixed blade, a pressure block and a wrench; the fixed blade is fixed on the rotating shaft, the pressure block is fixed at a position of the rotating shaft close to the shaft end, a convex portion is provided at a position of the pressure block away from the rotating shaft, a side of the convex portion facing the fixed blade is provided with a pressing surface, a middle section of the wrench is rotatably fixed on a pivot shaft parallel to the rotating shaft, a concave portion is provided on the wrench at a position corresponding to the convex portion, a rolling element is provided at a port of the concave portion located on one side of the pressing surface, and the rolling element is in contact with the pressing surface.

[0007] Furthermore, the fixed blade and the rotating shaft are fixed by screws.

[0008] Furthermore, the rotating shaft is provided with a plurality of threaded holes, and the end of the fixed blade away from the movable blade is provided with a plurality of through holes, the plurality of through holes are provided in one-to-one correspondence with the plurality of threaded holes, and the screws are screwed into the threaded holes after passing through the through holes.

[0009] Furthermore, a through hole is provided in the middle section of the wrench, and the wrench is sleeved on the pivot shaft through the through hole.

[0010] Furthermore, both ends of the rotating shaft are rotatably fixed on a frame of the printer, and the pivot shaft is fixed on the frame.

[0011] Furthermore, the rolling element is a roller, a roller shaft, a roller or a ball.

[0012] The utility model has the following advantages:

[0013] When releasing the jam, the handle is pressed downward to rotate it around the pivot axis, and the rolling element at the end of the recessed portion presses the pressing surface of the convex portion, so that the pressing block swings downward at a certain angle, and the pressing block drives the rotating shaft to rotate, and the rotating shaft drives the fixed blade to swing, so that the fixed blade flips downward at a certain angle, and there is a large gap between the fixed blade and the movable blade after flipping, so that the movable blade and the fixed blade are released.

[0014] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0017] Figure 1 A schematic diagram of the structure of a movement module using a blade separation structure provided in an embodiment of the utility model;

[0018] Figure 2 A schematic structural diagram of a blade separation structure provided in an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the positional relationship and structure of a rotating shaft, a moving blade and a pressing block of a blade separation structure provided by an embodiment of the utility model;

[0020] Figure 4 A schematic structural diagram of a wrench with a blade separation structure provided by an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of the positional relationship and structure of a wrench and a pressure block of a blade separation structure provided in an embodiment of the utility model.

[0022] In the figure: 1-moving blade, 2-moving blade mounting portion, 3-moving blade driving portion, 4-fixed blade, 5-fixed blade mounting frame, 6-rotating shaft, 7-pressing block, 8-wrench, 9-convex portion, 10-pressing surface, 11-pivot shaft, 12-through hole, 13-recess, 14-rolling element, 15-threaded hole. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] like Figure 1-5 As shown, this embodiment provides a blade separation structure, which is applied to the cutter of the core module of a thermal printer, and is an improvement on the existing structure.

[0025] In the prior art, the cutter is composed of a movable blade 1, a movable blade mounting portion 2, a movable blade driving portion 3, a fixed blade 4, a fixed blade mounting frame 5, etc. The movable blade 1 is mounted on the movable blade mounting portion 2, and a rack is arranged on the lower side of the movable blade mounting portion 2. The movable blade driving portion 3 is a set of gear sets, the input end of which is connected to the motor, and the output end is meshed with the rack. In the process of cutting the paper, the movable blade 1 moves toward the fixed blade 4 and slides along the upper side of the fixed blade 4. After the movable blade 1 and the fixed blade 4 are stuck, the cutting edge of the movable blade 1 remains covered on the fixed blade 4. At this time, manual unblocking is required to return the movable blade 1 to its original position. The present application aims to provide a structure for unblocking, i.e., a blade separation structure, which is unblocked by separating the fixed blade from the movable blade.

[0026] The blade separation structure includes a rotating shaft 6, a fixed blade 4, a pressure block 7 and a wrench 8. The rotating shaft 6 is arranged in the left-right direction, and its two ends are rotatably fixed on the frame of the printer. The cutting edge of the fixed blade 4 faces backward, and the front end of the fixed blade 4 is fixed on the rotating shaft 6. When the rotating shaft 6 rotates, the fixed blade 4 swings or flips accordingly. The pressure block 7 is fixed at a position close to the shaft end of the rotating shaft 6; in this embodiment, the pressure block 7 is arranged at a position close to the left shaft end of the rotating shaft 6. A convex portion 9 is arranged at a position away from the rotating shaft 6, and a pressing surface 10 is arranged on the side of the convex portion 9 facing the fixed blade 4; in this embodiment, the convex portion 9 is located at the rear lower part of the pressure block 7, and the pressing surface 10 is located at the rear upper side of the convex portion 9. The wrench 8 is arranged below the pressure block 7, and is located on the left side together with the pressure block 7. The middle section of the wrench 8 is rotatably fixed on a pivot shaft 11 parallel to the rotating shaft 6, wherein the pivot shaft 11 is fixed on the frame; illustratively, a through hole 12 is provided in the middle section of the wrench 8, and the wrench 8 is sleeved on the pivot shaft 11 through the through hole 12. A recess 13 is provided at the position of the wrench 8 corresponding to the convex portion 9, and a rolling element 14 is provided at the port of the recess 13 located on one side of the pressing surface 10, and the rolling element 14 is in contact with the pressing surface 10. illustratively, the rolling element 14 is a roller, a roller, a roller or a ball; in this embodiment, the recess 13 is located on the upper side of the wrench 8 and located in the upper front of the pivot shaft 11; the rolling element 14 is located above or slightly forward of the pivot shaft 11. The outer end of the wrench 8 extends out of the frame of the printer; in this embodiment, the outer end of the wrench 8 extends forward. In this embodiment, the four directions of front, rear, left and right are defined with "the direction in which the movable blade moves toward the fixed blade 4" as "front".

[0027] When releasing the card, the outer end of the handle is pressed downward to rotate the handle around the pivot axis 11, and the concave portion 13 and the rolling element 14 at the end thereof rotate around the pivot axis 11. The rolling element 14 squeezes the pressing surface 10 of the convex portion 9 to make the pressing block 7 swing downward. During the swinging process of the pressing block 7, the rotating shaft 6 is driven to rotate, and the rotating shaft 6 drives the fixed blade 4 to swing, so that the fixed blade 4 is turned downward by a certain angle. After the turning, there is a large gap between the fixed blade 4 and the moving blade, and the moving blade and the fixed blade 4 are released. In addition, the use of the rolling element 14 to squeeze the pressing surface 10 can reduce friction, so that the hand feel is better and the force is smaller when pressing to release the card, which not only improves the performance, but also improves the user experience.

[0028] After unblocking, the movable blade 1 returns to the initial position under the action of the movable blade driving unit 3, waiting for the next paper cutting command; in the process of the movable blade 1 returning to the initial position, the fixed blade 4 also returns to the initial position, so as to cooperate with the movable blade 1 to complete the next cutting. The fixed blade 4 can be reset by setting a reset spring on the rotating shaft 6, for example, a torsion spring is set, one end of the torsion spring acts on the rotating shaft 6, and the other end acts on the frame; the fixed blade 4 can also be reset by the wrench 8, for example, the outer end of the wrench 8 is lifted, and the concave portion 13 drives the convex portion 9 to rotate in the opposite direction, so that the fixed blade 4 is reset.

[0029] In this embodiment, the fixed blade 4 is fixed to the rotating shaft 6 by screws. For example, the rotating shaft 6 is provided with a plurality of threaded holes 15, and the end of the fixed blade 4 away from the moving blade is provided with a plurality of through holes, and the plurality of through holes are provided in a one-to-one correspondence with the plurality of threaded holes 15, and the screws are screwed into the threaded holes 15 after passing through the through holes. On the one hand, the fixed blade 4 and the rotating shaft 6 can be effectively fixed as a whole, and on the other hand, the fixed blade 4 can be replaced.

[0030] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numerals and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0035] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A blade separation structure, characterized in that: It comprises a rotating shaft, a fixed blade, a pressure block and a wrench; the fixed blade is fixed on the rotating shaft, the pressure block is fixed at a position of the rotating shaft close to the shaft end, a convex portion is arranged at a position of the pressure block away from the rotating shaft, a side of the convex portion facing the fixed blade is provided with a pressing surface, a middle section of the wrench is rotatably fixed on a pivot shaft parallel to the rotating shaft, a concave portion is arranged on the position of the wrench corresponding to the convex portion, a rolling element is arranged at a port of the concave portion located on one side of the pressing surface, and the rolling element is in contact with the pressing surface.

2. The blade separation structure according to claim 1, characterized in that: The fixed blade and the rotating shaft are fixed by screws.

3. The blade separation structure according to claim 2, characterized in that: The rotating shaft is provided with a plurality of threaded holes, and the end of the fixed blade away from the movable blade is provided with a plurality of through holes, the plurality of through holes are arranged in one-to-one correspondence with the plurality of threaded holes, and the screws are screwed into the threaded holes after passing through the through holes.

4. The blade separation structure according to claim 1, characterized in that: The middle section of the wrench is provided with a through hole, and the wrench is sleeved on the pivot shaft through the through hole.

5. The blade separation structure according to claim 1, characterized in that: Both ends of the rotating shaft are rotatably fixed on the frame of the printer, and the pivot shaft is fixed on the frame.

6. The blade separation structure according to claim 1, characterized in that: The rolling element is a roller, a roller shaft, a roller or a ball.

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