Thermal printer double-module assembly structure for improving printing definition

Abstract

The utility model discloses a thermal printer double-module assembly structure capable of improving printing definition, and relates to the technical field of printers. The cover comprises an upper cover assembly, the front side of the upper cover assembly is fixedly connected with a lower cover plate, the rear side of an inner cavity of the upper cover assembly is provided with a middle frame assembly, and the top of the upper cover assembly is provided with a flip cover assembly. According to the utility model, through the integrated design of the printing head mechanism and the flip cover assembly and the combination of a J-shaped hook, a trapezoidal hole and a runway-shaped hole positioning structure of the middle frame assembly, the accurate alignment of the printing head mechanism and a rubber roller gear set is realized, the assembly complexity is reduced through the modular design, the dependence on the processing precision of a plastic part is reduced, and the moving direction of a printing head bracket is limited; the thermal printing sheet is ensured to be strictly aligned with the center of the rubber roller, so that the printing definition and stability are improved, the flip assembly is compact in structure, the space layout is optimized, the problem that a traditional movable structure occupies too large space is solved, and equipment miniaturization is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to printer technical field, especially, relate to a kind of heat-sensitive printer double module assembly structure of promotion printing definition. BACKGROUND

[0002] Printer is a kind of peripheral equipment that electronic document or image is converted into entity paper output, realizes the accurate reproduction of character and figure by ink-jet, laser, heat-sensitive or needle type etc., is widely used in office, education, family and commercial field to satisfy the diversification needs such as data printing, photo output, with different resolution, printing speed and paper handling capacity to adapt to various use scenarios, as the key output tool of computer system greatly promotes the entity efficiency of information dissemination.

[0003] In existing heat-sensitive and heat transfer printing equipment, two structure forms are mainly used, one is that print head assembly is fixed and inactivity, rubber roller provides pressure by elastic component, such as torsion spring, the metal material of torsion spring is pressed to contact rubber roller shaft rotating place, there is pressure friction when rotating, so wear will appear after long time, influence printing life, two is that print head assembly is movable, rubber roller is rotatable and inactivity, print head assembly has pressure spring support below and provides suitable printing pressure, but this structure occupies large space, lead to heat-sensitive printer cannot be miniaturized and portable, not conducive to use.

[0004] Therefore, we provide a kind of heat-sensitive printer double module assembly structure of promotion printing definition to solve the problems in the above. Utility model content

[0005] The utility model aims at providing a kind of heat-sensitive printer double module assembly structure of promotion printing definition, by the integration design of print head module and flip module, accurate alignment is realized by the J-shaped hook, trapezoidal hole and racetrack-shaped hole positioning structure of middle frame, solve the problems of component wear and print head movable structure occupying too much space in prior art due to rubber roller friction.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes.

[0007] The utility model discloses a kind of thermal printer double module assembly structures of improving printing definition, including upper cover assembly, the front side of upper cover assembly is fixedly connected with lower cover plate, the rear side of the inner chamber of upper cover assembly is provided with middle frame assembly, the top of upper cover assembly is provided with flip cover assembly, the right side of flip cover assembly is movably connected with upper cover assembly by pivot, the middle frame assembly includes middle frame mechanism, print head mechanism and cover plate, the inner chamber of middle frame mechanism is connected with print head mechanism, the top of print head mechanism is fixedly connected with print head compression spring, the rear side of cover plate is fixedly connected with middle frame mechanism by self-tapping screw, the top of flip cover assembly is fixedly connected with FPCA, the left side of flip cover support is provided with rubber roll gear group, the left side of flip cover support and the top of rubber roll gear group are connected with rubber roll support, the top of flip cover support is connected with flip cover hook, opening hook compression spring is arranged between flip cover hook and rubber roll support, the top of flip cover support is fixedly connected with flip cover shell by bolt, the inner chamber of flip cover shell is provided with opening button.

[0008] The utility model further sets up, print head mechanism includes sensor cover plate, thermal printing sheet, thermal sheet heat sink and print head support, the bottom of sensor cover plate and thermal printing sheet are mutually connected, the left side of thermal printing sheet bottom is fixedly connected with thermal sheet heat sink, the top of print head support is fixedly connected with thermal printing sheet, the front side and rear side of print head support are movably connected with middle frame mechanism and cover plate respectively, sensor cover plate can protect thermal printing sheet, thermal sheet heat sink can heat dissipation, avoid its temperature too high, print head support can install thermal printing sheet, adjust its use position simultaneously.

[0009] The utility model further sets up, the rear side of lower cover plate is fixedly connected with upper cover assembly by self-tapping screw, the top of the left side of upper cover assembly and lower cover plate is all set with paper outlet, and lower cover plate and upper cover assembly are fixed by self-tapping screw, and lower cover plate can be conveniently disassembled, and paper outlet can conveniently discharge label paper after printing.

[0010] The utility model further sets up, the top of flip cover shell is set with operation opening that is used in cooperation with opening button, the left side of rubber roll support is fixedly connected with paper tearing knife by screw, operation opening can conveniently press opening button by user, control flip cover assembly opens, and paper tearing knife can cut label neatly.

[0011] The utility model further sets up, the left side of cover plate and middle frame mechanism top all are equipped with J hook, the left side of the front side of cover plate and middle frame mechanism is equipped with trapezoidal hole and racecourse shape hole respectively, J hook can position to rubber roll, make it only rotate, can't move up and down and left and right, trapezoidal hole and racecourse shape hole can position to print head support, control its moving direction, thereby reach accurate alignment, realize the best effect of printing, improve stability.

[0012] The utility model further sets up, the left side of print head support's front side and rear side all are fixedly connected with trapezoidal piece, the right side of print head support's front side and rear side all are fixedly connected with racecourse convex axle, the left side of print head support bottom is fixedly connected with triangular compression piece, trapezoidal piece inserts trapezoidal hole inside, position to trapezoidal piece and print head support through trapezoidal hole, racecourse convex axle can cooperate with racecourse shape hole and be convenient for print head support swing, triangular compression piece can be connected with one end of print head compression spring conveniently.

[0013] The utility model further sets up, the front side and rear side of flip hook all are fixedly connected with bent hook, the front side and rear side of uncapping button all are fixedly connected with rotating rod, the front side and rear side of flip cover inner chamber all are equipped with the rotation hole of cooperation with rotating rod, bent hook can be convenient for flip hook control flip assembly open, rotating rod and rotation hole can be convenient for uncapping button be stirred by user.

[0014] The utility model has the advantages of the following.

[0015] 1, the utility model discloses a print head mechanism and the integrated design of flip assembly, combines the J hook of middle frame assembly, trapezoidal hole and racecourse shape hole positioning structure, realizes the accurate alignment of print head mechanism and rubber roll gear group, and the modular design reduces assembly complexity, reduces the dependence of plastic part processing precision, limits the moving direction of print head support, ensures that the thermal sensitive printing sheet and rubber roll center are strictly aligned, thereby improving the printing definition and stability, the compact structure of flip assembly optimizes the space layout, solves the problem that the traditional movable structure occupies too much space, and is favorable to equipment miniaturization.

[0016] 2, the utility model discloses that the trapezoidal hole of middle frame assembly cooperates with the trapezoidal piece of print head support, and the limiting effect of racecourse shape hole and racecourse convex axle, accurately restricts the activity range of print head mechanism and prevents deviation, J hook makes rubber roll only rotate, avoids the positioning deviation caused by moving up and down or left and right, the heat dissipation plate and sensor cover plate of thermal sensitive sheet are integrated in print head mechanism, improve the heat dissipation efficiency and protection performance, flip hook and uncapping hook compression spring cooperate and simplify flip operation, the compact structure and function integration, give consideration to printing precision, durability and portability, effectively overcome the defects of friction loss and space redundancy in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed for the description of the embodiments.

[0018] Fig. 1 It is a perspective view of a double module assembly structure of a thermal printer for improving printing definition;

[0019] Fig. 2 It is a sectional view of a double module assembly structure of a thermal printer for improving printing definition;

[0020] Fig. 3 It is an exploded view of a double module assembly structure of a thermal printer for improving printing definition;

[0021] Fig. 4 It is an exploded view of a middle frame assembly in a double module assembly structure of a thermal printer for improving printing definition;

[0022] Fig. 5 It is an exploded view of a print head mechanism in a double module assembly structure of a thermal printer for improving printing definition;

[0023] Fig. 6 It is an exploded view of a flip cover assembly in a double module assembly structure of a thermal printer for improving printing definition.

[0024] In the drawings: 1, upper cover assembly; 2, lower cover plate; 3, middle frame assembly; 4, flip cover assembly; 5, rotating shaft; 31, middle frame mechanism; 32, print head mechanism; 33, cover plate; 34, print head compression spring; 41, flip cover support; 42, FPCA; 43, rubber roller gear set; 44, rubber roller support; 45, flip cover hook; 46, cover opening hook compression spring; 47, flip cover shell; 48, cover opening button; 321, sensor cover plate; 322, thermal print sheet; 323, thermal sheet heat sink plate; 324, print head support; 35, J-shaped hook; 36, trapezoidal hole; 37, runway-shaped hole; 325, trapezoidal block; 326, runway convex shaft; 6, paper tearing knife. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the present application will be described below in combination with the drawings in the embodiments of the present application, and the described embodiments are only some of the embodiments of the present application, not all of the embodiments.

[0026] Embodiment one

[0027] Please refer to Figs. 1-6The utility model relates to a kind of hot sensitive printer double module assembly structure of lifting printing definition, including upper cover assembly 1, the front side of upper cover assembly 1 is fixedly connected with lower cover plate 2, the rear side of the inner chamber of upper cover assembly 1 is provided with middle frame assembly 3, the top of upper cover assembly 1 is provided with flip cover assembly 4, the right side of flip cover assembly 4 is movably connected with upper cover assembly 1 by pivot 5, middle frame assembly 3 includes middle frame mechanism 31, print head mechanism 32 and cover plate 33, print head mechanism 32 is clamped in the inner chamber of middle frame mechanism 31, the top of print head mechanism 32 is fixedly connected with print head compression spring 34, the rear side of cover plate 33 is fixedly connected with middle frame mechanism 31 by self-tapping screw, flip cover assembly 4 includes flip cover support 41, the top of flip cover support 41 is fixedly connected with FPCA 42, the left side of flip cover support 41 is provided with rubber roll gear set 43, the left side of flip cover support 41 and the top of rubber roll gear set 43 are clamped with rubber roll support 44, the top of flip cover support 41 is clamped with flip cover hook 45, flip cover hook 45 and rubber roll support 44 between are provided with uncapping hook compression spring 46, the top of flip cover support 41 is fixedly connected with flip cover shell 47 by bolt, the inner chamber of flip cover shell 47 is provided with uncapping button 48.

[0028] Specifically: lower cover plate 2 can seal upper cover assembly 1, to protect the precision components of middle frame assembly 3 and upper cover assembly 1, print head mechanism 32 can carry out heat-sensitive printing operation, cover plate 33 can install print head mechanism 32 in middle frame mechanism 31, print head compression spring 34 can provide print head mechanism 32 with compression force, flip cover support 41 can facilitate the installation of FPCA 42, rubber roll gear set 43 and flip cover hook 45, rubber roll support 44 can stably install rubber roll gear set 43 on the side of flip cover support 41, uncapping button 48 can facilitate user to open flip cover assembly 4.

[0029] Example two

[0030] Please refer to Figs. 1-6On the basis of the first embodiment, the print head mechanism 32 comprises a sensor cover plate 321, a thermal print sheet 322, a thermal sheet heat sink 323 and a print head support 324, the bottom of the sensor cover plate 321 is clamped with the thermal print sheet 322, the left side of the bottom of the thermal print sheet 322 is fixedly connected with the thermal sheet heat sink 323, the top of the print head support 324 is fixedly connected with the thermal print sheet 322, the front side and the rear side of the print head support 324 are movably connected with the middle frame mechanism 31 and the cover plate 33 respectively, the rear side of the lower cover plate 2 is fixedly connected with the upper cover assembly 1 through self-tapping screws, the top of the left side of the upper cover assembly 1 and the lower cover plate 2 is provided with a paper outlet opening, the top of the flip cover shell 47 is provided with an operation opening matched with the opening button 48, the left side of the rubber roller support 44 is fixedly connected with a paper tearing knife 6 through screws, the left side of the top of the cover plate 33 and the middle frame mechanism 31 is provided with a J-shaped hook 35, the front side of the cover plate 33 and the middle frame mechanism 31 is provided with a trapezoidal hole 36 and a racetrack-shaped hole 37 respectively, the left side of the front side and the rear side of the print head support 324 is fixedly connected with a trapezoidal block 325, the right side of the front side and the rear side of the print head support 324 is fixedly connected with a racetrack convex shaft 326, the left side of the bottom of the print head support 324 is fixedly connected with a triangular pressing block, the front side and the rear side of the flip hook 45 is fixedly connected with a bent hook, the front side and the rear side of the opening button 48 is fixedly connected with a rotating rod, the front side and the rear side of the inner cavity of the flip cover shell 47 is provided with a rotating hole matched with the rotating rod.

[0031] Specifically: the sensor cover plate 321 can protect the thermal print sheet 322, the thermal sheet heat sink 323 can dissipate heat to avoid overheating, the print head support 324 can install and adjust the position of the thermal print sheet 322, the lower cover plate 2 and the upper cover assembly 1 are fixed by self-tapping screws, which can facilitate the disassembly of the lower cover plate 2, the paper outlet opening can facilitate the discharge of the printed label paper, the operation opening can facilitate the user to press the opening button 48 to control the flip cover assembly 4 to open, the paper tearing knife 6 can cut the label neatly, the J-shaped hook 35 can limit the rubber roller to rotate only, the trapezoidal hole 36 and the racetrack-shaped hole 37 can limit the movement direction of the print head support 324 to achieve precise alignment and achieve the best printing effect, improve stability, the trapezoidal block 325 is inserted into the trapezoidal hole 36 to limit the trapezoidal block 325 and the print head support 324 through the trapezoidal hole 36, the racetrack convex shaft 326 can cooperate with the racetrack-shaped hole 37 to facilitate the swinging of the print head support 324, the triangular pressing block can be conveniently connected with one end of the print head compression spring 34, the bent hook can facilitate the flip hook 45 to control the flip cover assembly 4 to open, and the rotating rod and the rotating hole can facilitate the opening button 48 to be actuated by the user.

[0032] The working principle of the utility model is: the rubber roller is fixed in the middle frame assembly 3 through the J-shaped hook 35, only can rotate and cannot move up and down or left and right, the printhead support 324 is limited transverse displacement through the trapezoidal hole 36 and the trapezoidal block 325 cooperation, at the same time the runway convex shaft 326 makes the printhead support 324 can swing in the runway hole 37, the vertical activity range of the printhead mechanism 32 is accurately controlled, the trapezoidal hole 36 and the runway hole 37 of the middle frame assembly 3 and the printhead cover plate 33 synergistic effect, ensure that the thermal sensitive printing piece 322 and the rubber roller center are strictly aligned, reduce the position deviation in the printing process, at the same time the modular assembly of the flip cover assembly 4, the upper cover assembly 1 and the middle frame assembly 3 make its structure compact, solve the problem of the traditional movable structure occupying too large space, benefit the equipment miniaturization, through the limiting cooperation of the J-shaped hook 35, the trapezoidal hole 36 and the runway hole 37, realize the accurate alignment of the printhead mechanism 32 and the rubber roller, solve the traditional structure wear problem, optimize the space layout, improve the printing stability and equipment life.

[0033] The above disclosed utility model preferred embodiment is only used for helping to set forth the utility model, and the preferred embodiment does not describe all the details, and also does not limit the utility model to only the specific implementation mode, and the description selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model.

Claims

1. A dual-module assembly structure for a thermal printer to improve print clarity, comprising an upper cover assembly (1), characterized in that: The upper cover assembly (1) is fixedly connected to the front side of the lower cover plate (2), the upper cover assembly (1) is provided with a middle frame assembly (3) on the rear side of the inner cavity of the upper cover assembly (1), the upper cover assembly (1) is provided with a flip cover assembly (4) on the top, and the right side of the flip cover assembly (4) is movably connected to the upper cover assembly (1) through a pivot (5). The middle frame assembly (3) includes a middle frame mechanism (31), a print head mechanism (32), and a cover plate (33). The print head mechanism (32) is snapped into the inner cavity of the middle frame mechanism (31). A print head compression spring (34) is fixedly connected to the top of the print head mechanism (32). The rear side of the cover plate (33) is fixedly connected to the middle frame mechanism (31) by self-tapping screws. The flip cover assembly (4) includes a flip cover bracket (41), an FPCA (42) is fixedly connected to the top of the flip cover bracket (41), a rubber roller gear set (43) is provided on the left side of the flip cover bracket (41), a rubber roller bracket (44) is snapped on the left side of the flip cover bracket (41) and at the top of the rubber roller gear set (43), a flip cover hook (45) is snapped on the top of the flip cover bracket (41), an opening hook spring (46) is provided between the flip cover hook (45) and the rubber roller bracket (44), and a flip cover shell (47) is fixedly connected to the top of the flip cover bracket (41) by bolts, and an opening button (48) is provided in the inner cavity of the flip cover shell (47).

2. The dual-module assembly structure for a thermal printer to improve print clarity according to claim 1, characterized in that: The printhead mechanism (32) includes a sensor cover plate (321), a thermal printing sheet (322), a thermal sheet heat sink (323), and a printhead bracket (324). The bottom of the sensor cover plate (321) is engaged with the thermal printing sheet (322). The left side of the bottom of the thermal printing sheet (322) is fixedly connected to the thermal sheet heat sink (323). The top of the printhead bracket (324) is fixedly connected to the thermal printing sheet (322). The front and rear sides of the printhead bracket (324) are movably connected to the middle frame mechanism (31) and the cover plate (33), respectively.

3. The dual-module assembly structure for a thermal printer to improve print clarity according to claim 1, characterized in that: The rear side of the lower cover plate (2) is fixedly connected to the upper cover assembly (1) by self-tapping screws. The upper cover assembly (1) and the top left side of the lower cover plate (2) are both provided with paper outlet openings.

4. The dual-module assembly structure for a thermal printer to improve print clarity according to claim 1, characterized in that: The top of the flip cover (47) is provided with an operation port that works in conjunction with the opening button (48), and a paper tearing knife (6) is fixedly connected to the left side of the rubber roller bracket (44) by screws.

5. The dual-module assembly structure for a thermal printer to improve print clarity according to claim 1, characterized in that: J-shaped hooks (35) are provided on the left side of the top of the cover plate (33) and the middle frame mechanism (31), and trapezoidal holes (36) and racetrack-shaped holes (37) are provided on the two sides of the front side of the cover plate (33) and the middle frame mechanism (31), respectively.

6. The dual-module assembly structure for a thermal printer to improve print clarity according to claim 2, characterized in that: Trapezoidal blocks (325) are fixedly connected to the left side of the front and rear sides of the printhead bracket (324), and racetrack convex shafts (326) are fixedly connected to the right side of the front and rear sides of the printhead bracket (324). A triangular pressure block is fixedly connected to the left side of the bottom of the printhead bracket (324).

7. The dual-module assembly structure for a thermal printer to improve print clarity according to claim 1, characterized in that: The front and rear sides of the flip cover hook (45) are fixedly connected with hooks, the front and rear sides of the cover opening button (48) are fixedly connected with rotating rods, and the front and rear sides of the inner cavity of the flip cover (47) are provided with rotating holes for use with rotating rods.

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