CN111993800B

CN111993800B - Printing mechanism and printer

Info

Publication number: CN111993800B
Application number: CN202010898818.5A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Xiamen Hanyin Co ltd
Current assignee: Xiamen Hanyin Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2025-03-14
Anticipated expiration: 2040-08-31
Also published as: CN111993800A

Abstract

The invention provides a printer core and a printer, which relate to the technical field of printing devices and comprise a machine cover, a machine body, a printing head, a paper pressing roller, a cutting device and a positioning mechanism, wherein the positioning mechanism comprises a positioning component and a limiting component, the positioning component comprises a first positioning part arranged on the printing head and a second positioning part arranged on the other one of the machine cover and the machine body, the second positioning part is arranged to be abutted against the first positioning part so as to limit the movement trend of the printing head towards the downstream side, the limiting component comprises a first limiting component arranged on one of the machine cover and the machine body and a second limiting component arranged on the other one of the machine cover and the machine body, and the second limiting component is arranged to be abutted against the first limiting component so as to limit the movement trend of the one of the machine cover and the machine body towards the upstream side, and the printing head is prevented from being driven by the machine cover or the machine body so as to achieve the aim of stabilizing the pressure contact line of the printing head and the paper pressing roller.

Description

Printer core and printer

Technical Field

The invention relates to the technical field of printing devices, in particular to a printer core and a printer thereof.

Background

Along with the popularization of self-service equipment, the self-service equipment is provided with more and more printer cores, and the printer cores need to be provided with an automatic paper cutting structure, so that the convenience of taking out printed paper by a user is met.

The printer core at the present stage only needs to leave a space which is slightly larger than the printing width above the printer core, so that the quick opening and closing of the product can be realized, and paper replacement and printer core fault relief are facilitated. The printer core is characterized in that a machine cover and a machine body are independently arranged, and a paper pressing roller and a printing head are respectively arranged on the machine cover or the machine body. When the cover and the body are closed, the recording of the contents on the recording medium is realized by pressure contact between the platen roller and the print head. To achieve the printing effect, the print head is movably disposed so that the pressure contact of the print head and the platen roller is uniform. In carrying out the present invention, the inventors have found that there is at least a problem in the prior art in that, when an external force is applied to a printhead during printing, the printhead moves in an unintended direction with respect to a platen roller, resulting in fluctuation in printing quality.

Disclosure of Invention

The invention discloses a printer core, which aims to solve the problem that a printing head moves towards an unexpected direction relative to a platen roller in the printing process.

The invention adopts the following scheme:

In a first aspect, the present invention provides a printer cartridge including a cover, a body, a print head that is provided swingably on one of the cover and the body under an external force, a platen roller that is provided on the other of the cover and the body in a pressure-contact manner with the print head, a cutting device having a fixed blade and a movable blade, the fixed blade being provided on a downstream side of the print head in a conveying direction of the print medium, the movable blade being movably provided with respect to the fixed blade so as to be capable of cutting the print medium in a pressure-contact state with the fixed blade on the downstream side of the fixed blade, and a positioning mechanism having a positioning member and a movement limiting member, the positioning member having a first positioning member provided on the other of the cover and the body and a second positioning member provided on the other of the cover and the body, the second positioning member being provided so as to be capable of abutting against the first positioning member to limit movement of the downstream side of the print head, the movement limiting member having a first movement trend provided on the other of the cover and the body and a second movement limiting member provided on the other of the cover and the first movement limiting member.

The printer head comprises a mounting frame, a heat-sensitive component fixed on the mounting frame and a first elastic component, wherein the first elastic component is arranged between the printer cover and the mounting frame to generate pressure between the printer head and a transverse paper pressing roller when the printer cover is fastened on the machine body, and the transverse direction is perpendicular to the conveying direction.

As a further improvement, the first limiting component comprises two protruding parts which are respectively formed on the cover and protrude along the transverse direction, the second limiting component comprises two concave parts which are respectively formed on the machine body and can be respectively abutted against one protruding part, the upstream ends of the protruding parts are abutted against the concave parts when the machine body is fastened by the cover, so that the movement trend of the cover is limited when the movable blade is in pressure contact with the fixed blade, and the downstream ends of the protruding parts are in clearance fit with the concave parts.

As a further improvement, the machine body comprises two supporting walls which are arranged at two ends in the transverse direction and respectively provided with concave parts, the paper pressing roller is rotatably supported on the two supporting walls through shaft sleeves arranged at two ends of the paper pressing roller, the shaft sleeves are fixed on the supporting walls, the machine cover comprises two side walls which are arranged at two ends in the transverse direction and respectively provided with convex parts, the two side walls are integrally formed, the two supporting walls are integrally formed, and the convex parts are inserted into the concave parts when the machine cover is fastened on the machine body.

As a further improvement, each of the concave portions is provided at end edges of both ends in the conveying direction with a guide portion into which the convex portion can be inserted under the guide of the guide portion.

As a further improvement, the first limiting component comprises two protruding parts which are respectively formed on the machine body and protrude along the transverse direction, the second limiting component comprises two concave parts which are respectively formed on the machine cover and can respectively abut against one protruding part, the downstream end of each concave part abuts against the corresponding protruding part when the machine cover is fastened on the machine body, so that the movement trend of the machine cover is limited when the movable blade is in pressure contact with the fixed blade, and the upstream end of each protruding part is in clearance fit with the corresponding concave part.

As a further improvement, the first positioning member includes two positioning projections formed on the mounting frame so as to project in a lateral direction, and the second positioning member includes two positioning recesses formed on the body so as to be respectively abutted against the positioning projections, and in a state where the body is fastened by the cover, a downstream end of the positioning projections can be abutted against the positioning recesses when the platen roller rotates, so as to limit a moving tendency of the mounting frame toward a downstream side.

As a further improvement, the fixed blade is swingably supported on the cover by a second elastic member provided between the fixed blade and the cover, the fixed blade is provided with pivoting arms at both lateral ends, and the cover is provided with pivoting grooves at both lateral ends connected to the pivoting arms to limit the swing range of the fixed blade.

As a further improvement, the cover comprises two side walls arranged at two ends in the transverse direction, the two side walls are provided with a clearance groove, the two positioning convex parts are respectively inserted into the clearance groove, and the downstream ends of the positioning convex parts are in clearance fit with the clearance groove so that the movable printing head can be supported on the body.

In a second aspect, the invention further provides a printer core, comprising a cover, a machine body, a printing head, a paper pressing roller, a cutting device and a positioning mechanism; A recording medium cutting device includes a fixed blade and a movable blade, the fixed blade being provided on a downstream side of the printing head in a conveying direction of the recording medium, the movable blade being provided to be movable with respect to the fixed blade so as to be closely spaced from the fixed blade on an upstream side of the fixed blade to cut the recording medium in a pressure-contact state, a positioning mechanism including a positioning member and a stopper member, the positioning member including a first positioning member provided on the printing head and a second positioning member provided on the other of the cover and the main body, the second positioning member being provided to be capable of abutting against the first positioning member to restrict a movement tendency of the printing head to the downstream side, the stopper member including a first stopper member provided on the one of the cover and the main body and a second stopper member provided on the other of the cover and the main body, the second stopper member being provided to be capable of abutting against the first stopper member and the second stopper member.

In a third aspect, the present invention further provides a printer comprising a printer cartridge as described in any one of the preceding claims.

By adopting the technical scheme, the invention can obtain the following technical effects:

According to the printer core in the scheme, the first positioning component and the second positioning component matched with the first positioning component are arranged on the printing head, the second positioning component is located on the printer body, the second positioning component can be abutted against the first positioning component during covering so as to limit the movement of the printing head with the first positioning component to the downstream side (the conveying direction of the recording medium), the printing roller conveys the recording medium to the downstream side during printing, the second positioning component is abutted against the first positioning component so as to limit the movement of the printing head to the downstream side, the printing head is prevented from continuously shifting along with the recording medium, the printing head is always located at the printing position during printing, and accurate positioning and printing are achieved. The second limiting component of the limiting component is arranged to be capable of abutting against the first limiting component when the cover is closed, so that the movement trend of the cover to the upstream side (opposite to the conveying direction of the recording medium) is limited, when the movable blade is in pressure contact with the fixed blade to cut the recording medium, the force transmitted to the upstream side of the cover can not enable the cover to drive the printing head to move along the upstream side relative to the machine body, and therefore the stability of controlling the contact line of the printing head and the paper pressing roller is achieved.

Further, the positioning member corresponds to a restriction of movement of the printhead to the downstream side, the stopper member corresponds to a restriction of movement of the cover and the main body to the upstream side, and the first positioning means of the positioning member is disposed at the position of the printhead, and the first stopper means/the second stopper means of the stopper member is disposed at one of the two members, thereby ensuring that the two members are separately disposed, not only correcting the cutting and printing positions of the cover and the main body when they are covered, but also always ensuring the consistency and reliability of positioning. Meanwhile, the first positioning component is arranged on the printing head arranged on one side of the machine cover or the machine body, so that the printing head is not influenced to deviate to a limit state (printing position) in the normal working process, and the performance and the service life of the printer core are facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a printer core according to an embodiment of the present invention at a first angle of view;

FIG. 2 is an enlarged view of a portion of region I of FIG. 1;

FIG. 3 is a schematic view of a printer core according to an embodiment of the present invention at a second angle of view;

FIG. 4 is a schematic view of the structure of a cover of a printer cartridge according to an embodiment of the present invention, wherein the lower drawing is partially broken away;

FIG. 5 is a partially exploded view of the cover of the printer cartridge of an embodiment of the invention at another perspective;

FIG. 6 is a schematic view of a printer core according to an embodiment of the present invention at a third perspective;

FIG. 7 is a schematic view of the printer core according to the embodiment of the present invention in a capping configuration;

Fig. 8 is a schematic view of the structure of fig. 7 at another view angle.

The icons are 1-cover, 11-side wall, 12-upper frame, 13-pivot slot, 2-body, 21-support wall, 22-shaft, 3-printhead, 31-mount, 32-thermal assembly, 33-first spring assembly, 4-platen, 5A-fixed blade, 5A 1-pivot arm, 5B-movable blade, 5C-second spring assembly, 6A-first positioning member, 6 A1-positioning protrusion, 6B-second positioning member, 6B 1-positioning recess, 7A-first stopper, 7 A1-protrusion, 7B-second stopper, 7B 1-recess, 7B 2-guide, 8-hook, 81-plate, 82-double hook, 9-return spring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Examples

Referring to fig. 1 to 8, an embodiment of the present invention provides a printer cartridge including a cover 1, a main body 2, a printhead 3, a platen roller 4, a cutting device (not shown), and a positioning mechanism (not shown). Wherein the printhead 3 is for printing a recording medium, and is swingably provided on the cover 1 under an external force. The platen roller 4 is in pressure contact with the print head 3 and is provided on the body 2. The cutting device includes a fixed blade 5A and a movable blade 5B. The fixed blade 5A is provided on the downstream side in the conveyance direction of the recording medium with respect to the print head 3. The movable blade 5B is movably disposed with respect to the fixed blade 5A, and is disposed so as to be capable of being closely spaced with respect to the fixed blade 5A on the downstream side of the fixed blade 5A to cut the recording medium in a pressed contact state. In the present embodiment, the positioning mechanism includes a positioning member (not shown) and a stopper member (not shown). The positioning means has a first positioning member 6A disposed on the printhead 3 and a second positioning member 6B disposed on the main body 2, the second positioning member 6B being provided so as to be able to abut against the first positioning member 6A to restrict the movement tendency of the printhead 3 toward the downstream side. The stopper member has a first stopper member 7A disposed on the cover 1 and a second stopper member 7B disposed on the body 2, and the second stopper member 7B is provided so as to be capable of abutting against the first stopper member 7A to restrict the movement tendency of the upstream side of the cover 1.

In the present embodiment, the first positioning member 6A disposed on the print head 3 and the second positioning member 6B disposed in cooperation therewith are provided, wherein the second positioning member 6B is located on the cover 1 or the main body 2 on the opposite side of the first positioning member 6A, so that the second positioning member 6B can abut against the first positioning member 6A at the time of covering to restrict the movement of the print head 3 with the first positioning member 6A toward the downstream side (the conveyance direction of the recording medium). When the printer works, the platen roller 4 conveys the recording medium to the downstream side, the second positioning component 6B limits the movement of the printing head 3 to the downstream side through abutting the first positioning component 6A, the printing head 3 is prevented from continuing to deviate along with the recording medium, the printing head 3 is always positioned at a printing position in the printing process, and the accurate positioning and printing are achieved. Further, the second stopper member 7B of the stopper member is provided so as to be able to abut against the first stopper member 7A at the time of capping, and restricts the movement tendency of one of the cap 1 and the body 2 to the upstream side (opposite to the recording medium conveying direction), based on the fact that the movable blade 5B is provided so as to be able to cut the recording medium in a contact state where there is pressure on the downstream side of the fixed blade 5A and closely spaced with respect to the fixed blade 5A, so that the movable blade provides the movement tendency of the fixed blade 5A to move along the upstream side, the movement of the first stopper member 7A along the upstream side by the urging force generated during the cutting by the cutting device is avoided by the abutment restriction of the second stopper member 7B, ensuring that the print head provided on the cap 1 does not appear to move along the upstream side together with the random cap 1, thereby ensuring that the pressure contact line between the print head 3 and the platen roller 4 remains stable during the printing.

It should be noted that the positioning members correspond to restrict the movement of the printhead 3 to the downstream side, the stopper members correspond to restrict the movement of the cover 1 and the body 2 to the upstream side, and the first positioning means 6A of the positioning members are disposed at the position of the printhead 3, and the first stopper means 7A/the second stopper means of the stopper members are disposed at the body 2, thereby ensuring that the two members are separately disposed, not only making it possible to adjust the contact line between the printhead 3 and the platen roller 4 to maintain a predetermined pressure contact position when the cover 1 and the body 2 are being covered, but also ensuring that the printhead 3 and the platen roller 4 remain stable at this position during operation, achieving the purpose that the position of the contact line does not change due to an external force.

In one embodiment, one end of the cover 1 in the transverse direction is hinged to the body 2, and the other end is fastened to the body 2 by fastening. The printhead 3 includes a mounting frame 31, a thermal assembly 32 fixed to the mounting frame 31, and a first elastic assembly 33. The first elastic member 33 is disposed between the cover 1 and the mounting frame 31 to generate pressure between the printhead 3 and the platen roller 4 when the cover 1 is fastened to the body 2, so that the mounting frame 31 is elastically disposed on the cover 1 by the swingable first elastic member. The platen roller 4 is pressed up against the mount frame 31 by the cover fastening, and the mount frame 31 is moved to the printing position of the thermal assembly 32 along the downstream side when the recording medium is conveyed, and the mount frame 31 is swingably arranged on the cover 1 by the first elastic assembly 33 so as to be brought into pressure contact between the thermal assembly 32 and the platen roller 4. Wherein, transversely perpendicular to the direction of conveyance, make the lid 1 that disposes in one of them of transverse direction cover in fuselage 2 position with the articulated mode in the side direction, and with accurate counterpoint lid through positioning mechanism.

Referring to fig. 2 to 8, in one embodiment, the first stopper member 7A includes two protrusions 7A1 formed on the cover 1 respectively to protrude in a lateral direction, and the second stopper member 7B includes two recesses 7B1 formed on the body 2 respectively to be able to abut against one of the protrusions 7A1 respectively. The upstream end (end along the upstream side) of the boss 7A1 abuts against the recess 7B1 when the cover 1 fastens the body 2 to limit the movement tendency of the cover 1 when the movable blade 5B is in pressure contact with the fixed blade 5A. Wherein the downstream end of the boss 7A1 and the recess 7B1 are clearance fit. At the time of covering, the convex portion 7A1 can only abut against the concave portion 7B1 along the groove wall at the upstream end. The cover 1 is fastened at the position of the machine body 2, at this time, the protruding portion 7A1 is embedded into the concave portion 7B1 to be clamped, the upstream end of the protruding portion 7A1 is abutted against the concave portion 7B1, the downstream end of the protruding portion is in clearance fit with the concave portion 7B1, the upstream end of the protruding portion 7A1 is abutted against the groove wall of the concave portion 7B1, therefore, the movement trend of the protruding portion 7A1 towards the upstream side is limited, a gap moving along the downstream side is reserved, the protruding portion 7A1 and the concave portion 7B1 are always in an incomplete clamping state, and the situation that the protruding portion 7A1 cannot be completely clamped into the concave portion 7B1 due to manufacturing errors is avoided. At least the first and second stoppers 7A and 7B are configured to prevent one of the cover 1 and the body 2 from being displaced in the direction of the force when the two cutters are brought into contact with each other during the cutting operation of the cutting device, thereby preventing the cover 1 and the body 2 from being displaced.

Correspondingly, the body 2 includes two support walls 21 provided at both ends in the lateral direction and having the concave portions 7B1, respectively, and the platen roller 4 is rotatably supported on the two support walls 21 by bosses provided at both ends thereof. Wherein the sleeve is fixed to the support wall 21. The platen roller 4 is disposed at the position of the main body 2 via a shaft sleeve, the print head 3 is swingably disposed at the position of the cover 1 via a mount 31, and the platen roller 4 and the print head 3 cooperate to form a paper feed path for conveying the recording medium when the cover is closed. Specifically, the cover 1 includes two side walls 11 provided at both ends in the lateral direction and having protrusions 7A1, respectively, the two side walls 11 are integrally formed, and the two support walls 21 are integrally formed, the protrusions 7A1 being inserted into the recesses 7B1 when the cover 1 is fastened to the body 2.

Referring to fig. 3 to 5, in other embodiments, the cover 1 is provided with an upper frame 12 having a rectangular frame body, and the mounting frame 31 and the fixed blade 5A are mounted on the upper frame 12. Wherein, the two side walls 11 are respectively formed at two lateral positions of the upper frame 12. It should be noted that, the mounting frame 31 is mounted in the upper frame 12 in a hanging manner by the first elastic component 33, and the mounting frame 31 can be elastically biased in the up-down and front-back directions relative to the end surface of the upper frame 12 under the elastic configuration of the first elastic component 33.

Preferably, each of the concave portions 7B1 is provided with a guide portion 7B2 at the end edges of both ends in the conveying direction, and the convex portion 7A1 can be inserted into the concave portion 7B1 via the guide portion 7B 2. Wherein, the openings of the concave part 7B1 are provided with a guiding part 7B2 which is beneficial for the convex part 7A1 to enter the groove of the concave part 7B1, and the notch of the concave part 7B1 is correspondingly expanded. The guiding part 7B2 can conduct guiding sliding relative to the protruding part 7A1 when contacting the protruding part, so that the protruding part 7A1 directly and smoothly enters the notch under the action of the guiding part 7B2, and one-time cabin closing positioning action is completed.

Referring to fig. 2 to 8, in one embodiment, the first positioning member 6A includes two positioning projections 6A1 formed on the mounting frame 31 to project in the lateral direction, and the second positioning member 6B includes two positioning recesses 6B1 formed on the body 2 to abut against the positioning projections 6A1, respectively. In a state where the cover 1 is fastened to the body 2, the downstream end of the positioning convex portion 6A1 can abut against the positioning concave portion 6B1 when the platen roller 4 rotates, so as to limit the tendency of movement of the mount 31 toward the downstream side. In the present embodiment, the protruding portion 7A1 and the recessed portion 7B1 of the stopper member are positioned in the upstream side direction to restrict the movement tendency along the upstream side, so as to avoid misalignment of the pushing cap 1 and the body 2 when cutting the recording medium. In cooperation with this, the positioning convex portion 6A1 and the positioning concave portion 6B1 of the positioning member position the printhead 3 stably in the printing position in the downstream side direction to restrict the moving tendency in the downstream side, and prevent the printhead 3 from being biased away from the platen roller 4, thereby ensuring that the pressure contact line between the printhead 3 and the platen roller 4 remains stable during printing.

In a preferred embodiment, the cover 1 includes two side walls 11 disposed at two ends in a transverse direction, two side walls 11 are provided with a clearance groove (not shown), two positioning protruding portions 6A1 are respectively inserted into the clearance groove, and a downstream end of each positioning protruding portion 6A1 is in clearance fit with the clearance groove, so that when the platen roller 4 conveys the recording medium to a downstream side in a printing process, the print head 3 does not transmit the thrust to the cover 1 when receiving the thrust of the platen roller 4, and the fixed blade 5A or the movable blade 5B disposed on the cover 1 is ensured not to follow the movement in the printing process, so as to ensure the stability of the cutting positions of the movable blade 5B and the fixed blade 5A.

In one embodiment, the protruding portion 7A1 has an arc shape with gradually changed protruding height from top to bottom, and the protruding height of the protruding portion 7A1 at the lower end is greater than the protruding height at the upper end. When in covering, the contact area clamped between the protruding part 7A1 and the recessed part 7B1 is changed from large to small, so that the cover is covered and abutted along the positioning direction, and the cover can be opened and closed more conveniently. In particular, the protruding portion 7A1 protrudes from the side wall 11 disposed on the left and right sides of the upper frame 12, and coincides with the protruding direction of the positioning protruding portion 6 A1. The recess 7B1 and the positioning recess 6B1 are disposed at intervals in the conveying direction, and are located on the support walls 21 on both the left and right sides of the body 2. The limiting member and the positioning member are arranged at the same two side positions of the cover 1, and the protruding direction of the protruding part 7A 1/the positioning protruding part 6A1 is approximately outward, so that the corresponding concave part 7B1 and the corresponding positioning concave part 6B1 are arranged at one side of the machine body 2 along the same straight line direction at intervals, and the left side and the right side of the cover 1 and the machine body 2 are provided with the positioning mechanisms, thereby realizing efficient and stable positioning cover combination of the cover 1 and the machine body 2.

In one embodiment, the protruding portion 7A1 is disposed at the left and right end surfaces of the mounting frame 31 in an extending manner, and the left and right sides of the body 2 are provided with the recess portions 7B1 correspondingly. Wherein the level of the boss 7A1 is lower than the level of the positioning boss 6 A1. The mounting frame 31 is assembled on the upper frame 12, the horizontal height position of the protruding part 7A1 arranged on one side of the mounting frame 31 is higher than the horizontal height position of the positioning protruding part 6A1 extended on one side of the mounting frame 31, and when the cover is closed, preliminary positioning is carried out through embedded adaptation of the protruding part 7A1 with low position height and the concave groove on the machine body 2, and further the positioning protruding part 6A1 with high position height is embedded and matched with the positioning concave part 6B1 so as to be accurately covered.

In one embodiment, the fixed blade 5A is swingably supported on the cover 1 by a second elastic member 5C provided between it and the cover 1, the fixed blade 5A is provided with pivoting arms 5A1 at both lateral ends, and the cover 1 is provided with pivoting grooves 13 at both lateral ends connected to the pivoting arms 5A1 to limit the range of swing of the fixed blade 5A. The fixed blade 5A is provided at a distance from the mount 31, and does not interfere with each other.

In the present embodiment, a printer cartridge is provided, which includes a cover 1 and a body 2, with reference to fig. 2, 4 and 5. One end of the cover 1 in the transverse direction is hinged to the machine body 2, and the other end is fastened to the machine body 2. Wherein, also comprises a buckling mechanism (not shown) and a positioning mechanism. The buckling mechanism comprises a hook part 8 arranged on the cover 1, and the machine body 2 is transversely provided with a shaft part 22 matched with the hook part 8. When the cover 1 is closed to the body 2, the hook 8 is operatively turned to hook the shaft 22, so that the body 2 is closed and fastened to the cover 1. The positioning mechanism has a stopper member having a first stopper member 7A disposed on the cover 1 and a second stopper member 7B disposed on the body 2, the second stopper member 7B being provided so as to be capable of abutting against the first stopper member 7A to restrict the movement tendency of the cover 1 toward the upstream side.

In this embodiment, the fastening mechanism is configured on the cover 1, the machine body 2 is correspondingly provided with the shaft 22, after the cover is closed, the hook 8 of the fastening mechanism is rotated to hook the shaft 22, so that the machine body 2 and the cover 1 are mutually covered and fastened, and the cover 1 is covered at the position of the machine body 2 along the positioning direction through the positioning structure, so that accurate positioning cover is realized, printing quality is ensured, and the structure is simple, and the cover opening and closing operation of a user is facilitated. And, by the first stopper member 7A of the stopper means and the second stopper member 7B provided in opposition thereto, wherein the second stopper member 7B is provided so as to be able to abut against the first stopper member 7A at the time of capping and restrict the movement tendency of one of the cap 1 and the body 2 to the upstream side (opposite to the recording medium conveying direction), the movable blade 5B is provided so as to be able to cut the recording medium in a contact state with pressure on the downstream side of the fixed blade 5A while being closely spaced from the fixed blade 5A, so that the movable blade provides the movement tendency of the fixed blade 5A to the upstream side, and by the abutment restriction of the second stopper member 7B, the movement of the first stopper member 7A to the upstream side by the urging force generated during the cutting by the cutting device is avoided, the mutual overlapping of the fixed blade 5A and the movable blade 5B is ensured to accurately cut, and the accurate positioning of the printing head 3 is further ensured.

In one embodiment, the hook 8 is hingedly disposed on one lateral side of the cover 1 and the snapping mechanism is disposed on the other end of the cover 1 remote from the hinged end. The cover 1 is covered on the machine body 2, and the trigger hook 8 is hooked on the shaft 22 by elastic force. The fastening mechanism is configured on the cover 1 by the elastic force of the hook 8 through the return spring 9, so that the hook 8 can hinge upwards and downwards relative to the cover 1, and the hook 8 is separated from or clamped with the shaft 22 correspondingly to the return spring 9 and is in a deformed state or initial state correspondingly to the hook 8. Correspondingly, the hook part 8 is detachably hinged to one lateral side of the cover 1, and the shaft part 22 is transversely arranged at the same side position of the machine body 2. The return spring 9 can apply an elastic tension to the movement of the hook 8, and when no external force is applied to the hook 8, the hook 8 can be always kept at the initial position under the action of the return spring 9. When the cover is required to be opened, the hook part 8 is hinged upwards, so that the hook part 8 can be separated from the shaft part 22, and then the cover 1 can be opened and closed by rotating upwards.

In particular, the hook 8 comprises a plate 81 hinged transversely to one side of the cover 1 and a double hook 82 disposed on the plate 81 and disposed inwards. The plate 81 is triggered by a user to rotate upward or downward, so as to drive the double hooks 82 to disengage or clamp with the shaft 22 along the rotation direction. When the cover 1 is relatively covered to the machine body 2, the user rotates the plate 81 to correspondingly drive the double hooks 82 to rotate so as to avoid the cover 1 and the machine body 2 to be completely covered, and at the moment, the stress of the hook part 8 is removed, correspondingly the hook part 8 returns to the initial state under the drive of the reset spring 9 so as to hook the double hooks 82 on the shaft part 22, thereby ensuring that the cover 1 is firmly fixed on the machine body 2 and correspondingly covered to perform printing work.

In other embodiments (not shown), the platen roller is disposed on the cover side and the printhead is disposed on the body side. The second positioning member is formed on one side of the cover so that the print head moves downstream with respect to the cover. The first stopper is formed on the body and the second stopper is formed on the cover so as to prevent the cover from moving relative to the body when the movable blade is in pressure contact with the fixed blade. The structure, the function and the implementation manner of the first positioning component, the second positioning component, the first limiting component and the second limiting component are combined with any one of the above embodiments, and will not be described herein.

An embodiment of the present invention provides a printer cartridge (not shown), a cover, a main body, a printing head, a platen roller, a cutting device, and a positioning mechanism, wherein the printing head is swingably disposed on the cover under an external force, and the platen roller is in pressure contact with the printing head and is disposed on the main body. The cutting device has a fixed blade and a movable blade. The movable blade is movably disposed with respect to the fixed blade, and is disposed so as to be capable of cutting the recording medium in a pressed contact state at an upstream side of the fixed blade and closely spaced with respect to the fixed blade. Unlike the above-described embodiment, the fixed blade of the present embodiment is provided on the downstream side of the print head in the conveyance direction of the recording medium, and the stopper member of the positioning mechanism has a first stopper member disposed on the cover and a second stopper member disposed on the body, the second stopper member being provided so as to be capable of abutting the first stopper member. Based on the movable blade 5B being provided so as to be capable of cutting the recording medium in a contact state with pressure on the upstream side of the fixed blade 5A and being closely spaced with respect to the fixed blade 5A, the movable blade is made to apply a force to the fixed blade 5A toward the downstream side so that the cover for supporting the same has a movable tendency along the downstream side, and the cover with the supported printhead is prevented from being movable with respect to the main body by the pushing of the movable blade under the abutment restriction of the second restriction member provided on the main body, thereby achieving the stability of controlling the contact line of the printhead with the platen roller. It will be appreciated that, unlike the present embodiment, in other embodiments, the print head can be disposed on the side of the main body, the platen roller can be disposed on the side of the cover, the first stopper member is disposed correspondingly on the main body, and the second stopper member is disposed correspondingly on the cover. Other features not mentioned in this embodiment may be the same as those of any of the above embodiments, and the applicable modification and beneficial effects may also be the same as those of any of the above embodiments, so that the description thereof will not be repeated.

In one embodiment (not shown), the first stopper member includes two protrusions formed on the body, respectively, in a lateral direction, and the second stopper member includes two recesses formed on the cover, respectively, so as to be able to abut against one of the protrusions, respectively. The downstream end of the recess abuts against the boss when the cover is fastened to the body to limit the tendency of the cover to move when the movable blade is in pressure contact with the stationary blade. The upstream end of the boss and the recess are in clearance fit. Other features not mentioned in this embodiment may be the same as those of any of the above embodiments, and the applicable modification and beneficial effects may also be the same as those of any of the above embodiments, so that the description thereof will not be repeated.

An embodiment of the present invention further provides a printer, including any of the above printer cores.

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

Claims

1. A printing mechanism, characterized in that it comprises:

Engine cover;

body;

A print head, used for printing a recording medium, and swingably arranged on one side of the cover and the body under an external force;

A paper pressing roller, which is in pressure contact with the print head and is arranged on the other side of the cover and the body;

Cutting device, comprising:

a fixed blade disposed on a downstream side in a conveying direction of the recording medium relative to the print head; and

a movable blade movably disposed relative to the fixed blade, and disposed so as to be closely spaced relative to the fixed blade on the downstream side of the fixed blade so as to cut the recording medium in a contact state with pressure; and

Positioning mechanism, having:

A positioning member having a first positioning component disposed on the print head and a second positioning component disposed on the other of the cover and the body, wherein the second positioning component is configured to abut against the first positioning component to limit the movement tendency of the print head toward the downstream side; and

The limiting component has a first limiting component arranged on one side of the hood and the fuselage, and a second limiting component arranged on the other side of the hood and the fuselage, wherein the second limiting component is configured to abut against the first limiting component to limit the movement tendency of one side of the hood and the fuselage toward the upstream side.

2. The printer mechanism according to claim 1, characterized in that one end of the cover in the horizontal direction is hinged to the body, and the other end is fastened to the body in a detachable manner relative to the body; the print head comprises a mounting frame, a thermal component fixed to the mounting frame, and a first elastic component, wherein the first elastic component is arranged between the cover and the mounting frame to generate pressure between the print head and the horizontally placed paper pressing roller when the cover is fastened to the body;

Wherein, the transverse direction is perpendicular to the conveying direction.

3. The printing mechanism according to claim 2 is characterized in that the first limiting component includes two protrusions formed on the machine cover and protruding along the lateral direction, and the second limiting component includes two recessed portions formed on the body and capable of respectively abutting against one of the protrusions; the upstream end of the protrusion abuts against the recessed portion when the machine cover is fastened to the body, so as to limit the movement tendency of the machine cover when the movable blade is in pressure contact with the fixed blade; wherein the downstream end of the protrusion is clearance-matched with the recessed portion.

4. The printing mechanism according to claim 3 is characterized in that the body includes two support walls arranged at both ends in the horizontal direction and respectively have a recessed portion, and the paper pressing roller is rotatably supported on the two support walls by shaft sleeves arranged at both ends thereof; wherein the shaft sleeves are fixed on the support walls; the machine cover includes two side walls arranged at both ends in the horizontal direction and respectively have a protruding portion, the two side walls are integrally formed, the two support walls are integrally formed, and the protruding portion is inserted into the recessed portion when the machine cover is fastened to the body.

5. The printing mechanism according to claim 3, characterized in that each of the recessed portions is provided with a guide portion at the end edges of both ends in the conveying direction, and the protrusion can be inserted into the recessed portion under the guidance of the guide portion.

6. The printing mechanism according to claim 2 is characterized in that the first limiting component includes two protrusions formed on the upper side of the machine body and protruding laterally, and the second limiting component includes two recessed portions formed on the machine cover and capable of respectively abutting against one of the protrusions; the downstream end of the recessed portion abuts against the protrusion when the machine cover is fastened to the machine body, so as to limit the movement tendency of the machine cover when the movable blade is in pressure contact with the fixed blade; wherein the upstream end of the protrusion and the recessed portion are clearance-matched.

7. The printing mechanism according to any one of claims 2 to 6 is characterized in that the first positioning component includes two positioning protrusions formed on the mounting frame and protruding along the lateral direction, and the second positioning component includes two positioning recesses formed on the body, respectively used to abut against a positioning protrusion; when the cover is fastened to the body, the downstream end of the positioning protrusion can abut against the positioning recess when the paper pressing roller rotates, so as to limit the movement tendency of the mounting frame toward the downstream side.

8. A printer mechanism according to claim 7, characterized in that the machine cover includes two side walls arranged at both ends in the horizontal direction, and the two side walls are provided with clearance grooves, the two positioning protrusions are respectively inserted into a clearance groove, and the downstream end of the positioning protrusion is loosely matched with the clearance groove so that the movable print head can be supported on the machine body.

9. A printing mechanism, characterized by comprising:

Engine cover;

body;

A cutting device comprising:

a movable blade movably disposed relative to the fixed blade, and disposed so as to be closely spaced relative to the fixed blade on the upstream side of the fixed blade so as to cut the recording medium in a contact state with pressure; and

A positioning mechanism having:

The limiting component has a first limiting component arranged on the machine cover and a second limiting component arranged on the fuselage, wherein the second limiting component is configured to abut against the first limiting component to limit the movement tendency of one of the machine cover and the fuselage toward the downstream side.

10. A printer, characterized by comprising a printer mechanism as described in any one of claims 1 to 9.