CN212289202U

CN212289202U - Metal support for portable printer and printing module

Info

Publication number: CN212289202U
Application number: CN202020231463.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Xiamen Hanyin Electronic Technology Co Ltd
Current assignee: Xiamen Hanyin Electronic Technology Co Ltd
Priority date: 2019-08-23
Filing date: 2020-02-28
Publication date: 2021-01-05
Anticipated expiration: 2030-02-28
Also published as: CN212267036U; CN111216461A; CN111216457A; CN212289203U; CN212267035U

Abstract

The utility model relates to a metal support for portable printer, it is installed on the head frame of printer with the mode that can install and remove for the restriction platen roller removes to the third direction, and this metal support includes that body and integral type form is in the outer fender portion of the left and right sides of body, outer fender portion is equipped with the location concave part and is located the location convex part in the location concave part outside on the second direction, location convex part and location concave part looks interval set up in order to form the gomphosis space that is used for installing head frame gomphosis portion. The utility model discloses still relate to a print module group who contains above-mentioned metal support. The utility model discloses a metal support that can install and remove makes the printing apparatus life-span longer, and it is more convenient to maintain.

Description

Metal support for portable printer and printing module

Technical Field

The utility model relates to a thermal printer technical field, concretely relates to a print module group that is used for portable printer's metal support and adopts this metal support.

Background

In a conventional thermal printer, a print module rotates a print roller with a recording paper sandwiched between the print roller and a thermal head, and heats a print surface of the recording paper by the thermal head while conveying the recording paper, thereby developing color on the print surface to perform printing. The printing roller is arranged on the compression roller mechanism, and the thermal printing mechanism is supported on a fixed frame of the printing module in a swinging mode. The fixed frame is provided with a positioning groove, and two ends of the printing roller can be clamped into the positioning groove to fix the printing roller.

The portable printer needs to be portable and is not too heavy. The existing fixed frame is integrally formed by plastic, and under the condition of working and non-working at ordinary times, the compression roller mechanism is supported on the fixed frame by being supported in the positioning groove, and when the printing module is collided, the components of the positioning groove are easy to break or break under the action of the force of the compression roller mechanism or other external forces. When the positioning groove component is broken or broken, the whole fixing frame needs to be assembled, disassembled and replaced, and the replacement of the whole fixing frame is very troublesome and time-consuming;

SUMMERY OF THE UTILITY MODEL

For satisfying the mechanical strength and the whole light and handy demand of above-mentioned printing apparatus when satisfying work or preventing to collide, the utility model provides a following technical scheme:

a metal support for a portable printer is detachably mounted on a head frame of the printer and used for limiting a stamping roller to move towards a third direction, and comprises a body and outer blocking parts integrally formed on the left side and the right side of the body, wherein the outer blocking parts are provided with positioning concave parts and positioning convex parts positioned on the outer sides of the positioning concave parts in the second direction, and the positioning convex parts and the positioning concave parts are arranged at intervals to form an embedding space for installing a head frame embedding part.

Preferably, the metal bracket is an integral metal bracket formed by die casting.

The utility model also provides an adopt above-mentioned metal support's print module assembly, still include the head frame, the head frame is formed with the accommodation space on the first direction, the metal support is installed with restricting the translation on the first direction in the accommodation space.

Preferably, the first direction, the second direction and the third direction are perpendicular to each other.

Preferably, the thermal head is arranged on the head frame in a manner that the thermal head can swing around a pivot shaft; the two sides of the metal support extend downwards to form a connecting arm, and a shaft hole for the pin joint shaft to pass through is formed in the connecting arm.

Preferably, a photoelectric sensing assembly for detecting recording paper information is arranged on the body of the metal support, the photoelectric sensing assembly comprises a sensor, a sensor support plate and a mounting base, and the mounting base is clamped on the body.

Preferably, the left side and the right side of the head frame are respectively provided with a fixed seat formed integrally with the head frame, and the fixed seats are fixedly connected with the metal bracket through bolts.

Preferably, the stamping device further comprises a stamping unit which comprises a stamping frame and an elastic bracket, wherein the elastic bracket is supported on the stamping frame in a manner of rotating around the central axis of the stamping roller, and the left side and the right side of the elastic bracket in the first direction are respectively provided with a transfer arm, and the transfer arm is provided with a shaft hole for the rotating shaft of the stamping roller to pass through; the elastic support is provided with a swinging shaft in a penetrating way at a position far away from the switching arm, the outer blocking part of the metal support is provided with a limiting groove used for supporting the swinging shaft, and the limiting groove is provided with an opening for the swinging shaft to go in and out.

By adopting the technical scheme, the utility model discloses can gain following technological effect.

1. The utility model discloses an adopt the metal support, it is in order to install and remove mode fixed mounting on first frame, the constant head tank is by the outer fender portion of locating the metal support with locate the interior fender portion of first frame is constituteed, when outer fender portion receives external force to damage, through changing the metal support, can make printing apparatus can make things convenient for quick maintenance. Meanwhile, the outer blocking part is mainly used for bearing the force transmitted by the printing roller in the working process and is often collided when the printing assembly is subjected to external collision, and the outer blocking part is arranged on one part of the metal support, so that the mechanical strength of the outer blocking part can be effectively improved, and the service life and the impact resistance of the printing device are improved.

2. The utility model discloses an gomphosis mode makes removable the fixing of metal support and head frame, except making things convenient for the dismouting, can also make fixing of metal support more stable in first direction and second direction to make the equipment for printing the uniformity of in-process for a long time.

3. The utility model discloses well metal support adopts the integral type metal support that the die-casting formed, and its intensity is high, and is shock-resistant, long service life.

Drawings

Fig. 1 depicts a perspective view of the print module of the present invention.

Fig. 2 depicts a schematic structural view of the printing module according to the present invention.

Fig. 3 depicts a perspective view of the impression unit of the present invention.

Fig. 4 depicts a schematic structural view of the impression unit according to the present invention.

Fig. 5 is a perspective view of the head unit of the present invention.

Fig. 6 is a sectional view of the head unit in the direction of a-a.

Fig. 7 is a view showing a structure of the head unit disassembly structure of the present invention.

Fig. 8 is a schematic diagram of the force applied to the printing module during printing.

Fig. 9 is a schematic view of the disassembly structure of the head unit main bracket of the present invention.

Fig. 10 is a perspective view of the metal bracket of the present invention.

Fig. 11 depicts a close-up view of a metal stent of the present invention.

Fig. 12 is a perspective view of the head frame of the present invention

Fig. 13 shows a partial enlarged view of the head frame of the present invention

Attached figure main label

1. An imprint unit; 11. an impression frame; 12. a transmission gear; 13. an elastic support; 14. a platen roller; 16. an elastic member; 17. a swing shaft; 18. a support portion; 2. a head unit; 21. a mounting frame; 22. a support frame; 28. a head frame; 3. a metal bracket; 41. positioning a groove; 51. a sensor.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "upper end", "lower end", "upper section", "lower section", "upper side", "lower side", "middle", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The first direction in the utility model is the X direction and the-X direction in the attached drawing, the second direction is the Y direction and the-Y direction in the attached drawing, and the third direction is the Z direction and the-Z direction in the attached drawing.

The structure and function of the solution of the present application will now be described in detail with reference to fig. 1 to 13.

As shown in fig. 1 and 2, the utility model provides a print module, including impression unit 1, head unit 2 and metal support 3, impression unit 1 with head unit 2 is installed with the mode that can separate in combination. The head unit 2 includes a thermal head 221, a head frame 28, and a driving source 24 for driving the platen roller to rotate, and the driving source 24 is preferably a motor. As shown in fig. 3 and 4, the platen unit 1 includes a platen frame 11, and a platen roller 14 and an elastic holder 13 provided on the platen frame 11, and as shown in fig. 4, the platen roller 14 is supported by the platen frame 11 so as to be rotatable in a first direction X, and one end of the platen roller 14 in the first direction has a transmission wheel 12, and the transmission wheel 12 is connected to a drive source 24 on a head frame 28, and receives a force from the drive source 24 so as to rotate. The platen roller 14 is disposed opposite the thermal head 22, and rotates with the recording paper sandwiched therebetween to feed out the recording paper.

As shown in fig. 4, the elastic bracket 13 has a transfer arm 132 on each of the left and right sides in the first direction, the transfer arm 132 has a shaft hole or a relief portion through which the rotating shaft of the platen roller 14 passes, and the elastic bracket 13 is assembled with the platen roller 14 through the shaft hole or the relief portion; the elastic support 13 is supported and mounted on the platen frame so as to be rotatable about the center axis of the platen roller 14. A swing shaft 17 is arranged on the elastic support 13 far away from the adapting arm 132, a limit groove 316 for supporting the swing shaft 17 is arranged on the outer baffle part 31 of the metal support 3, and the limit groove 316 is provided with an opening for the swing shaft 17 to go in and out. The platen frame 11 is provided with an arc-shaped groove 111 through which the swing shaft 17 passes, and the swing shaft 17 is movable in the arc-shaped groove 111 of the platen frame 11. Be equipped with elastic component 16 between impression frame 11 and the elastic support 13, be equipped with the installation department of installation elastic component 16 on impression frame 11 and the elastic support 13, in the preferred scheme of the utility model, the installation department of elastic component is the mounting groove.

As shown in fig. 4, the platen roller 14 has a support portion 18 on each of the left and right sides in the first direction X, the support portion 18 has a shaft hole penetrating in the first direction X, the rotating shaft of the platen roller 14 passes through the shaft hole and is rotatable in the shaft hole, and the support portion 18 is fitted into the positioning groove 41 via the opening of the positioning groove 41 to couple the platen roller 14 to the metal holder 3. The support portion 18 may be a member having a different shape that satisfies the functional requirements described above; the platen roller 14 may be integrally formed as a part of the platen roller.

As shown in fig. 5, a photoelectric sensing assembly 51 for detecting recording paper information is disposed on the body 32 of the metal bracket 3, and the photoelectric sensing assembly 51 includes a sensor, a sensor carrier plate and a mounting base, and the mounting base is clamped on the body. The photoelectric sensing unit 51 is used to detect the condition information of the printing paper, such as the presence or absence of the printing paper, or different positions of the printing paper.

As shown in fig. 6 and 7, the thermal head 221 is mounted on the support frame 22, the two sides of the front end of the support frame 22 are provided with the limiting rods 223, the rear end of the support frame is provided with the mounting holes for mounting the pivot shaft 222, the pivot shaft 222 is mounted in the mounting holes of the support frame and assembled on the head frame 28, the limiting rods 223 of the support frame 22 are mounted in the grooves 2814 of the head frame 28, and the limiting rods 223 can swing around the pivot shaft 222 in the grooves 2814, and the swing range is determined by the size of the grooves 2814 and can be selected according to actual needs. The supporting frame 22 is installed on the head frame in a manner of swinging around the pivot shaft 222, and an elastic member is provided between the front end of the supporting frame 22 and the head frame for keeping a certain pre-tightening force of the thermal head during printing so that the thermal head clings to the printing paper during printing. The thermal head 221 is fixed to the head frame 28 so as to be swingable around the pivot shaft 222. The shaft bore 2813 is a kidney-shaped bore or a bore with a shape similar to a kidney-shaped bore, such as an oval-shaped bore. As shown in fig. 7 and 13, in the present invention, the pivot shaft 222 passes through the shaft hole 2813 of the connecting arm 314 and the head frame 28, and the diameter of the shaft hole 2813 of the head frame is larger than that of the shaft hole 2813 of the connecting arm 314, so that the pivot shaft 222 can more conveniently pass through the shaft hole 2813 of the head frame after passing through the shaft hole of the connecting arm, the assembly is easier, and the over-fitting condition is avoided.

As shown in fig. 8, the platen roller 14 is limited by the limiting portion 311 of the metal bracket 3, and the supporting frame 22 with the thermal head is rotatably pivoted on the connecting arm 314 of the metal bracket 3, when the printing assembly prints, printing paper is clamped between the thermal head 221 and the platen roller 14, the acting force F1 and the reaction force F2 transmitted by the printing paper during printing are respectively transmitted to the stressed portion 311 and the connecting arm 314 of the metal bracket 3, so that the acting force and the reaction force during printing are borne by the metal bracket, thereby preventing the fatigue damage of plastic parts caused by frequent stress from affecting the printing quality, and the acting force F1 is in the same direction as the third direction.

As shown in fig. 10 and 11, the metal bracket 3 is an integral metal bracket formed by die casting, the metal bracket 3 is detachably and fixedly mounted on the head frame 28, the left and right sides of the head frame 28 are respectively provided with integrally formed fixing

seats

281 and 282, the fixing

seats

281 and 282 are provided with bolt mounting portions 2811, and the head frame 28 is fastened and connected with the metal bracket 3 through the bolt mounting portions 2811 by bolts. The metal bracket 3 comprises a body 32 and two outer blocking parts 31, the two outer blocking parts 31 are respectively formed on the left and right sides of the body 32 in an integrated manner, corresponding to the outer blocking parts 31, the left and right sides of the head frame 28 are respectively provided with an inner blocking part 281, and the outer blocking part 31 and the corresponding inner blocking part 281 together form a positioning groove 41 with an opening; the metal bracket 3 has a connecting arm 314 on each of the left and right sides in the first direction X, and the connecting arm 314 is provided with a shaft hole for mounting the pivot shaft 222.

As shown in fig. 9, the head unit 2 includes a head frame 28 and a mounting frame 21 assembled with the head frame 28, a cutter mounting space is formed in front of the mounting frame 21 and the head frame 28, two ends of the mounting frame 21 are bent to form bent portions 211, the bottom of the mounting frame 21 is bent to form a clamping portion 212, and mounting spaces of the driving gear set 26 of the cutter and the embossing roller gear set 23 are formed in the two bent portions 211 and two sides of the head frame 28; the clamping part 212 is positioned in the accommodating space of the head frame 28 to form a cutter motor 25 mounting space and a driving motor 24 mounting space of the platen roller with the head frame 28. The metal bracket 3 is detachably provided on the head frame 28. As shown in fig. 12 and 13, the head unit 2 has protruding mounting

portions

281 and 282 on both sides of the head frame 28, and a receiving space is formed between the mounting

portions

281 and 282 in the first direction, and the metal bracket 3 is translationally restrained in the receiving space in the first direction. As shown in fig. 13, the mounting portion 281 is further provided with a fitting portion 2812 and a mounting groove 2815 which is fitted to the convex portion of the metal holder 3. As shown in fig. 10 and 11, the metal holder 3 has positioning concave portions 313 extending in the second direction Y on both left and right sides thereof, the metal holder 3 further has positioning convex portions 315 located outside the positioning concave portions 313, the positioning convex portions 315 and the positioning concave portions 313 are spaced apart from each other to form a fitting space, the head frame 28 has a fitting portion 2812 detachably fitted in the fitting space, and a part or all of the fitting portion 2812 is fitted in the positioning concave portions 313. In the present invention, in a preferred embodiment, the second direction is perpendicular to the first direction.

The utility model provides a printing apparatus, it specifically is portable printing apparatus (not shown), and it includes foretell print module assembly and a casing, and print module assembly disposes and is fixed in the casing.

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

Claims

1. A metal holder for a portable printer detachably attached to a head frame of the printer for restricting a platen roller from moving in a third direction, characterized in that:

the metal support comprises a body and outer blocking parts integrally formed on the left side and the right side of the body, wherein the outer blocking parts are provided with positioning concave parts and positioning convex parts located on the outer sides of the positioning concave parts in the second direction, and the positioning convex parts and the positioning concave parts are arranged at intervals to form embedding spaces for installing the head frame embedding parts.

2. A metal bracket for a portable printer according to claim 1, wherein said metal bracket is a one-piece metal bracket die-cast.

3. A print module comprising the metal holder according to any one of claims 1 to 2, and further comprising a head frame having an accommodating space formed in a first direction, wherein the metal holder is mounted in the accommodating space in a manner of being restricted from translation in the first direction.

4. A print module according to claim 3, wherein the first, second and third directions are mutually perpendicular to one another.

5. A print module according to claim 3, further comprising a thermal head and a support frame, the thermal head being mounted on the head frame via the support frame and swingably about a pivot axis; the two sides of the metal support extend downwards to form a connecting arm, and a shaft hole for the pin joint shaft to pass through is formed in the connecting arm.

6. The printing module according to claim 3, wherein the metal support body is provided with a photoelectric sensing assembly for detecting recording paper information, the photoelectric sensing assembly comprises a sensor, a sensor carrier plate and a mounting base, and the mounting base is clamped on the metal support body.

7. The printing module according to any one of claims 3 to 6, wherein the left and right sides of the head frame are respectively provided with a fixing seat integrally formed therewith, and the fixing seats are fastened and connected with the metal bracket through bolts.

8. The printing module according to claim 3, further comprising a platen unit including a platen frame and an elastic support, wherein the elastic support is supported on the platen frame in a manner of being capable of rotating around a central axis of the platen roller, and has a transfer arm on each of left and right sides in the first direction, the transfer arm having a shaft hole for passing a rotating shaft of the platen roller therethrough;

the elastic support is provided with a swinging shaft in a penetrating way at a position far away from the switching arm, the outer blocking part of the metal support is provided with a limiting groove used for supporting the swinging shaft, and the limiting groove is provided with an opening for the swinging shaft to go in and out.