Moving cutter structure of printer

Abstract

The utility model provides a moving cutter structure of a printer, the moving cutter structure is installed on a machine core support, an installation position used for installing the moving cutter structure is arranged above the machine core support, the moving cutter structure comprises a moving cutter upper cover and a moving cutter assembly, and the moving cutter upper cover is arranged on the machine core support; the moving cutter assembly is arranged on the mounting position and is positioned between the machine core support and the moving cutter upper cover; the movable cutter assembly comprises a movable blade, and the movable blade is arranged in the installation position and is connected with the machine core support in a sliding mode. According to the moving cutter structure, the moving cutter structure is directly installed on the machine core support, part of parts can be reduced, part cost and assembly cost are reduced, meanwhile, the position of the movable blade is moved downwards, the distance between the movable blade and the thermosensitive head piece is reduced, blank positions of printing paper are reduced, and printing efficiency is improved. The utilization rate of the printing paper is improved, the printing paper is saved, and the printing paper is more environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a moving knife structure of a printer. Background Art

[0002] At present, after the printer finishes printing, the printing paper is cut off by a moving knife assembly. One of the existing moving knife assemblies is a sliding structure, and the driving motor drives the moving knife blade to move and interact with the fixed knife blade to achieve semi-cutting or full-cutting.

[0003] For the existing moving knife assembly with a sliding structure, most of them integrate the driving motor and the moving knife blade into a housing and then directly install it on the movement support. For example, as Figure 1 shown, the following disadvantages may exist in adopting this structure:

[0004] First, in this way, there are too many components, and the part cost and assembly cost are too high;

[0005] Second, a support seat is arranged between the moving knife assembly and the movement support to avoid components such as the bolt head or screw head;

[0006] Third, the moving knife assembly is raised, the distance between the cutting knife and the print head piece increases, and there is a large blank space after the printing paper is cut off, resulting in waste of the printing paper.

[0007] In view of this, the inventor has specifically designed a moving knife structure of a printer, and this case is thus produced. Summary of the Utility Model

[0008] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a moving knife structure of a printer. By directly installing the moving knife structure on the movement support, some parts can be reduced, the part cost and assembly cost are reduced, and the disadvantages brought by the existing sliding moving knife assembly structure are overcome.

[0009] According to a moving knife structure of a printer provided by the utility model, the moving knife structure is installed on the movement support, an installation position for installing the moving knife structure is arranged above the movement support, and the moving knife structure includes:

[0010] A moving knife upper cover, which is arranged on the movement support;

[0011] A moving knife assembly, which is arranged on the installation position and is located between the movement support and the moving knife upper cover;

[0012] The moving knife assembly includes:

[0013] A movable blade, which is arranged in the installation position and is slidably connected to the movement support.

[0014] For the moving blade structure of the present utility model, by directly installing the moving blade structure on the movement support, some parts can be reduced, the part cost and the assembly cost are reduced. At the same time, the position of the movable blade is lowered, the distance between the movable blade and the thermal head piece is reduced, the blank position of the printing paper is reduced, the utilization rate of the printing paper is improved, the printing paper is saved, and it is more environmentally friendly.

[0015] In some embodiments of the present utility model, a gap communicating with the installation position is formed between the movement support and the upper cover of the moving blade to enable the movable blade to pass through.

[0016] In some embodiments of the present utility model, the movement support includes:

[0017] A main body part;

[0018] A first extension part, which is arranged on a long side of the main body part;

[0019] Two second extension parts, which are arranged on both sides of the short side of the main body part and are perpendicular to both ends of the first extension part;

[0020] The first extension part and the two second extension parts form the installation position.

[0021] In some embodiments of the present utility model, the moving blade assembly further includes:

[0022] A limiting component, which is used to limit the forward and backward movement of the movable blade.

[0023] In some embodiments of the present utility model, the limiting component includes:

[0024] A lower fixing plate, which is arranged above the movement support and is located in the installation position;

[0025] A spring piece, one long side of which is arranged on the lower fixing plate and the other side is suspended.

[0026] In some embodiments of the present utility model, the moving blade assembly further includes:

[0027] A positioning member, which is arranged on the movable blade;

[0028] A guiding step is arranged below the positioning member, and a guiding groove for cooperating with the guiding step is arranged on the lower fixing plate.

[0029] In some embodiments of the present utility model, the moving blade structure further includes:

[0030] A driving device, which is arranged at the installation position and located on the movement support seat, and is used to drive the movable blade to move repeatedly.

[0031] In some embodiments of the present utility model, the driving device includes:

[0032] A driving motor, which is arranged on the upper cover of the moving blade;

[0033] A worm, which is arranged at the output end of the driving motor and is driven by the driving motor;

[0034] A gear, which meshes with the worm and is used to drive the movable blade;

[0035] A driving rod, one end of which is arranged on the gear, and the other end extends to the movable blade.

[0036] In some embodiments of the present utility model, the driving motor drives the worm to rotate, the worm drives the gear and the driving rod to rotate, and drives the movable blade to move through the driving rod. The driving rod is vertically arranged with the gear, and there is a distance between its central axis and the central axis of the gear.

[0037] In some embodiments of the present utility model, the upper cover of the moving blade includes a horizontal part for covering above the movement support seat and a front end part integrally formed with the horizontal part. First clamping steps are arranged on both sides of the front end part, locking steps are arranged on both sides of the horizontal part, first clamping grooves matching with the first clamping steps are arranged on the movement support seat, the upper cover of the moving blade is installed on the movement support seat, and the two locking steps are located inside the movement support seat.

[0038] In some embodiments of the present utility model, the front end part is arranged relative to the first extension part, and a gap is formed between the lower end and the movement support seat; second clamping steps are further arranged on both sides of the horizontal part, and second clamping grooves matching with the second clamping steps are arranged on the second extension part.

[0039] In some embodiments of the present utility model, a limiting step for pressing the end of the movable blade is further arranged on the movement support seat.

[0040] In some embodiments of the present utility model, the movement support seat is a plastic part, integrally formed with plastic material, and the upper cover of the moving blade is a sheet metal part, formed by integral stamping. Description of the Drawings

[0041] The drawings described herein are used to provide a further understanding of the present utility model, and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model, and do not constitute an improper limitation to the present utility model.

[0042] Wherein:

[0043] Figure 1 is a schematic diagram of the existing moving knife structure;

[0044] Figure 2 is a schematic diagram of the moving knife structure of the present utility model;

[0045] Figure 3 is an exploded view of the moving knife structure of the present utility model;

[0046] Figure 4 is an exploded view of the moving knife assembly of the present utility model;

[0047] Figure 5 is a schematic diagram of the structure of the driving device of the present utility model;

[0048] Figure 6 is a schematic diagram of the structure of the movement support of the present utility model;

[0049] Figure 7 is a schematic diagram of the structure of the upper cover of the moving knife of the present utility model.

[0050] Reference numeral description:

[0051] 10. Movement support; 101. Mounting position; 102. Gap; 11. Main body part; 12. First extension part; 13. Second extension part; 14. First clamping groove; 15. Second clamping groove; 16. Limiting step; 20. Upper cover of moving knife; 21. Horizontal part; 211. Locking step; 212. Second clamping step; 22. Front end part; 221. First clamping step; 30. Moving knife assembly; 31. Movable blade; 32. Limiting component; 321. Lower fixing plate; 3211. Guide groove; 322. Elastic sheet; 33. Positioning part; 331. Guide step; 332. Driving groove; 40. Driving device; 41. Driving motor; 42. Worm; 43. Gear; 44. Driving rod. Detailed implementation manners

[0052] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0053] Please refer to Figures 2 to 7, which is the moving blade structure of a printer as the best embodiment of the present utility model. The moving blade structure is installed on the movement support 10. An installation position 101 for installing the moving blade structure is provided above the movement support 10. The moving blade structure includes a moving blade upper cover 20 and a moving blade assembly 30. The moving blade upper cover 20 is arranged on the movement support 10; the moving blade assembly 30 is arranged on the installation position 101 and is located between the movement support 10 and the moving blade upper cover 20; the moving blade assembly 30 includes a movable blade 31, and the movable blade 31 is arranged in the installation position 101 and is slidably connected to the movement support 10. By directly installing the moving blade structure on the movement support 10, the moving blade structure of the present utility model can reduce some parts, lower the part cost and the assembly cost. At the same time, the position of the movable blade 31 is lowered, the distance between the movable blade 31 and the thermal head piece is reduced, the blank space of the printing paper is reduced, the utilization rate of the printing paper is improved, the printing paper is saved, and it is more environmentally friendly.

[0054] A gap 102 communicating with the installation position 101 is formed between the movement support 10 and the moving blade upper cover 20 to enable the movable blade 31 to pass through. Specifically, the movement support 10 includes a main body portion 11, a first extension portion 12, and a second extension portion 13. The main body portion 11 is equivalent to the existing movement support 10. The first extension portion 12 is arranged on one long side of the main body portion 11; there are two second extension portions 13, which are located on both sides of the short side of the main body portion 11 and are perpendicular to both ends of the first extension portion 12; the first extension portion 12 and the two second extension portions 13 form the installation position 101. The first extension portion 12 and the second extension portion 13 can be directly formed on the main body portion 11. The movement support 10 is a plastic part and is integrally formed by using plastic material. A step portion for supporting the moving blade upper cover 20 can also be arranged inside the movement support 10.

[0055] The moving blade assembly 30 further includes a limiting assembly 32. The limiting assembly 32 is used to limit the forward and backward movement of the movable blade 31 to prevent the movable blade 31 from warping when cooperating with the fixed blade to cut paper; the limiting assembly 32 includes a lower fixing plate 321 and a spring piece 322. The lower fixing plate 321 is arranged above the movement support 10 and is located in the installation position 101; one long side of the spring piece 322 is arranged on the lower fixing plate 321, and the other side is suspended, but the suspended side remains elastic to enable the movable blade 31 to warp excessively when cutting paper. During installation, the lower fixing plate 321 is locked to the movement support by screws, and one long side of the spring piece 322 is also locked to the movement support or the lower fixing plate 321 by screws.

[0056] The moving blade assembly 30 further includes a positioning member 33 which is arranged on the movable blade 31; a guiding step 331 is arranged below the positioning member 33, and a guiding groove 3211 for cooperating with the guiding step 331 is arranged on the lower fixing plate 321. Through the mutual cooperation of the guiding step 331 and the guiding groove 3211, the movable blade 31 can move repeatedly along one direction. In order to make the moving process smoother, two guiding steps 331 are arranged, and correspondingly two guiding grooves 3211 are also arranged.

[0057] The moving blade structure further includes a driving device 332 driving slot 40; the driving device 332 driving slot 40 is arranged at the installation position 101 and is located on the movement support 10 for driving the movable blade 31 to move repeatedly; the driving device 332 driving slot 40 includes a driving motor 41, a worm 42, a gear 43, and a driving rod 44. The driving motor 41 is arranged on the upper cover 20 of the moving blade; the worm 42 is arranged at the output end of the driving motor 41 and is driven by the driving motor 41, the gear 43 meshes with the worm 42 and is used for driving the movable blade 31; one end of the driving rod 44 is arranged on the gear 43, and the other end extends to the movable blade 31. The driving motor 41 drives the worm 42 to rotate, the worm 42 drives the gear 43 and the driving rod 44 to rotate, and drives the movable blade 31 to move through the driving rod 44. The driving rod 44 is perpendicularly arranged with the gear 43, and there is a distance between its central axis and the central axis of the gear 43. The positioning member 33 is embedded in the movable blade 31, and a driving slot for the other end of the driving rod 44 to be embedded is arranged on the positioning member 33, so as to drive the positioning member 33 and the movable blade 31 to move simultaneously.

[0058] The upper cover 20 of the moving blade includes a horizontal part 21 for covering above the movement support 10 and a front end part 22 integrally formed with the horizontal part 21. First clamping steps 221 are arranged on both sides of the front end part 22, locking steps 211 are arranged on both sides of the horizontal part 21, and first clamping grooves 14 for cooperating with the first clamping steps 221 are arranged on the movement support 10. The upper cover 20 of the moving blade is installed on the movement support 10. The two locking steps 211 are located inside the movement support 10, that is, inside the two second extension parts 13, and the two first clamping steps 221 are embedded in the two first clamping grooves 14. The screws pass through the second extension parts 13 and are screwed to the locking steps 211. The front end part 22 is arranged relative to the first extension part 12, and a gap 102 is formed between the lower end and the movement support 10; in order to further improve the reliability after installation, second clamping steps 212 are also arranged on both sides of the horizontal part 21, and second clamping grooves 15 for cooperating with the second clamping steps 212 are arranged on the second extension parts 13. A limiting step 16 for pressing the end of the movable blade 31 is also arranged on the movement support 10. The upper cover 20 of the moving blade is a sheet metal part and is integrally formed by stamping.

[0059] In summary, the moving blade structure of the present utility model is directly installed on the movement support, which can reduce some parts, lower the part cost and assembly cost. At the same time, the position of the movable blade is lowered, reducing the distance between the movable blade and the thermal head sheet, reducing the blank space of the printing paper, improving the utilization rate of the printing paper, saving the printing paper and being more environmentally friendly.

[0060] The present utility model has been described exemplarily above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A movable knife structure of a printer, the movable knife structure is installed on a core support, characterized in that: A mounting position for mounting a moving knife structure is provided above the movement support, and the moving knife structure comprises: A movable knife upper cover, the movable knife upper cover is arranged on the movement support; A movable knife assembly, the movable knife assembly is arranged on the installation position and is located between the movement support and the movable knife upper cover; The movable knife assembly comprises: A movable blade is arranged in the installation position and is slidably connected to the movement support.

2. The movable knife structure of a printer according to claim 1, characterized in that: A gap communicating with the installation position is formed between the movement support and the movable knife upper cover.

3. The movable knife structure of a printer according to claim 1, characterized in that: The movement support comprises: Main body; A first extension portion, the first extension portion is disposed on a long side of the main body; Second extension parts, two second extension parts are provided, and are located on both sides of the short side of the main body and are perpendicular to the two ends of the first extension part; The first extension portion and the two second extension portions form the installation position.

4. The movable knife structure of a printer according to claim 1, characterized in that: The movable knife assembly also includes: A limit assembly is used to limit the forward and backward movement of the movable blade.

5. The movable knife structure of a printer according to claim 4, characterized in that: The limiting component comprises: A lower fixing plate, the lower fixing plate is arranged above the movement support and is located in the installation position; The spring sheet has one long side disposed on the lower fixing plate and the other side suspended.

6. The movable knife structure of a printer according to claim 5, characterized in that: The movable knife assembly also includes: A positioning member, the positioning member is arranged on the movable blade; A guide step is arranged below the positioning member, and a guide groove for cooperating with the guide step is arranged on the lower fixing plate.

7. The movable knife structure of a printer according to claim 1, characterized in that: The moving knife structure also includes: A driving device is arranged at the installation position and located on the movement support, and is used for driving the movable blade to move repeatedly.

8. The movable knife structure of a printer according to claim 7, characterized in that: The driving device comprises: A driving motor, wherein the driving motor is arranged on the upper cover of the movable knife; A worm, the worm being arranged at an output end of the driving motor and being driven by the driving motor; a gear meshing with the worm and configured to drive the movable blade; A driving rod, one end of which is disposed on the gear and the other end of which extends to the movable blade.

9. The movable knife structure of a printer according to claim 1, characterized in that: The movable knife upper cover includes a horizontal portion for covering the top of the movement support and a front end portion integrally formed with the horizontal portion, first locking steps are arranged on both sides of the front end portion, locking steps are arranged on both sides of the horizontal portion, a first locking groove cooperating with the first locking step is arranged on the movement support, the movable knife upper cover is installed on the movement support, and the two locking steps are located on the inner side of the movement support.

10. The movable knife structure of a printer according to claim 2, characterized in that: The movement support is also provided with a limiting step for pressing the end of the movable blade; The movement support is a plastic part, which is formed in one piece by plastic material, and the movable knife upper cover is a sheet metal part, which is formed by integral stamping.

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