A paper jam and paper take-out system and structure for a thermal printer

Abstract

The application discloses a kind of thermal printer paper jam paper taking system and structure, system includes bearing matrix, pressure component and functional execution component, the support of bearing matrix is equipped with rotating cooperation structure, pressure component rotates assembly in this structure, functional execution component contains execution element, bearing component and installation matrix, it can be elastically displaced under external force to change medium passage pitch, and displacement range is limited.Structure applies the system, contains support component, rubber roller and thermal component, the first and second support of support component is equipped with mounting hole for rubber roller rotating connection, thermal component contains thermal sheet, thermal sheet support and substrate, thermal sheet support is equipped with waist type slot, waist type hole and positioning column cooperation displacement limitation, bottom spring connects shell to help reset, press button can make thermal component and rubber roller separate, realize paper jam easy to take out, solve traditional printer paper jam paper taking problem, improve use convenience and equipment stability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of thermal printers, and particularly relates to a thermal printer paper jam and paper taking system and structure. BACKGROUND

[0002] At present, high-end single sheet thermal printers mostly adopt a sensor sensing automatic paper suction and feeding mode. No flip cover is usually provided in the structural design, which not only meets the functional requirements, reduces the production cost, but also optimizes the high-end texture of the product appearance. Such printers make the thermal sheet press the rubber roller through the thermal sheet spring, and realize paper conveying and printing by using the friction force between the two and cooperating with the transmission mechanism. However, the specific transmission ratio of the transmission mechanism makes it difficult for the rubber roller to be easily rotated. When the paper is inserted obliquely or printing is poor, paper jam is prone to occur between the thermal sheet and the rubber roller. Since the prior art lacks a targeted paper taking solution, the user can only hard pull the paper jam, which often causes the paper to break and remain in the machine, thereby affecting the normal use of the printer and possibly causing damage to the internal components, which brings great inconvenience to the user. SUMMARY

[0003] The present application aims to provide a thermal printer paper jam and paper taking system and structure to solve the problems in the background art.

[0004] Therefore, the present application provides a thermal printer paper jam and paper taking system, which comprises:

[0005] A bearing base, which comprises at least two oppositely arranged support portions, and a corresponding rotating fitting structure is arranged on the support portion;

[0006] A pressure applying member rotatably fitted in the rotating fitting structure; and

[0007] The functional execution assembly opposite to the pressure applying member and forming the medium passage comprises an execution element, a bearing member and a mounting base, the mounting base is fixed to the bearing member, the execution element is fixed to the mounting base, the pressure applying member is located at the corresponding side of the execution element to form the medium passage, the bearing member is arranged between the support parts and can produce reciprocating motion under the force in the preset direction, the two ends of the bearing member are provided with clamping plates, the waist-shaped grooves are formed on the clamping plates, the two ends of the pressure applying member are embedded in the waist-shaped grooves and can slide along the waist-shaped grooves; the waist-shaped holes are formed on the clamping plates and are located obliquely below the waist-shaped grooves, the positioning columns are protruded on the inner sides of the support parts, the positioning columns are inserted into the waist-shaped holes to limit the motion track of the bearing member; the functional execution assembly further comprises an elastic reset member, one end of the elastic reset member is connected with the bearing member, the other end is connected with the fixed structure of the bearing base, and the functional execution assembly can produce elastic displacement under the external force to change the medium passage distance between the functional execution assembly and the pressure applying member, and the displacement range of the functional execution assembly is limited in the preset range by the lengths of the waist-shaped grooves and the waist-shaped holes.

[0008] A paper jam taking structure of a thermal printer, applying a paper jam taking system of a thermal printer, the paper jam taking structure of the thermal printer comprises:

[0009] A support assembly;

[0010] A rubber roller, both ends of the rubber roller are rotatably connected between the support assembly;

[0011] A thermal component, the thermal component is adapted to be mounted between the support assembly and corresponds to below the rubber roller, a printing space is formed between the thermal component and the rubber roller, the thermal component can produce elastic displacement under pressing to change the printing space distance between the thermal component and the rubber roller, and the displacement of the thermal component under force is limited in a preset range.

[0012] In the present application, a further embodiment is that the support assembly comprises a first support and a second support, corresponding mounting holes are formed on the first support and the second support, and both ends of the rubber roller are rotatably connected with the mounting holes.

[0013] In the present application, a further embodiment is that the thermal component comprises a thermal sheet, a thermal sheet support and a substrate, the substrate is fixed on the thermal sheet support, the thermal sheet is fixed on the substrate, the rubber roller is located above the thermal sheet to form a printing space, and the thermal sheet is arranged between the first support and the second support and can produce up-down motion under longitudinal force.

[0014] In the present application, a further embodiment is that the thermal sheet support forms clamping plates at both ends, waist-shaped grooves are formed on the clamping plates, and both ends of the rubber roller are arranged in the waist-shaped grooves.

[0015] In the present application, further embodiments are that a waist-shaped hole is further formed below the waist-shaped groove on the card plate, and a positioning column is further protruded on the inner side of the first support and the second support, and the positioning column is inserted and matched with the waist-shaped hole, so that the thermal sensitive sheet is limited to move up and down within a preset range between the first support and the second support.

[0016] In the present application, further embodiments are that a mounting portion is formed by bending the middle of one side of the thermal sensitive sheet, and the mounting portion is used for fixing the key.

[0017] In the present application, further embodiments are that a spring is further included, the spring is provided with a plurality of spring and is arranged at the bottom of the thermal sensitive sheet support in an interval, and a shell is further included, the thermal sensitive printer paper jam taking structure is arranged in the shell, and the spring is elastically connected between the bottom of the thermal sensitive sheet support and the shell.

[0018] The present application has the following beneficial effects:

[0019] The thermal sensitive printer paper jam taking system breaks the limitation that the paper cannot be taken out conveniently after the card jam in the traditional printer by the core logic of the elastic displacement adjustment of the medium passage distance through the cooperative design of the bearing base, the pressure applying member and the function executing assembly. The system can be adapted to various printing equipment scenes, the displacement range of the function executing assembly is limited, the effective expansion of the medium passage is ensured when the paper is jammed, the paper can be taken out without resistance, the structural stability is ensured when the paper is printed normally, and the use reliability and adaptability of the printing equipment are significantly improved.

[0020] The thermal sensitive printer paper jam taking structure strictly limits the movement track of the thermal sensitive assembly through the waist-shaped groove, the waist-shaped hole and the positioning column through the precise cooperation of the support assembly, the rubber roller, the thermal sensitive assembly and the spring. The thermal sensitive assembly can be driven to separate from the rubber roller by pressing the key, the friction force during the taking of the paper is completely eliminated, the paper is prevented from being broken and remaining, the paper jammed can be easily taken out, the pre-tightening force provided by the spring can ensure that the thermal sensitive sheet is stably attached to the rubber roller during normal printing, the printing effect is not affected, the cost advantage and appearance texture of the original printer without the flip cover design are retained while the paper jamming problem is solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the overall structure schematic diagram of the thermal sensitive printer;

[0022] Figure 2 is the explosion structure schematic diagram of the present application Figure One ;

[0023] Figure 3 is the explosion structure schematic diagram of the present application Figure Two ;

[0024] Figure 4 is the structure schematic diagram of the thermal sensitive sheet support. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that the terms used herein are only intended to describe the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so further discussion is not needed in subsequent drawings once an item is defined in one drawing.

[0027] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not intended to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0028] It should be noted that in the description of the present application, the orientation terms such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of contrary indications, these orientation terms do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation terms "inner, outer" refer to the inner and outer relative to the contour of each component.

[0029] It should be noted that in this application, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0030] The embodiment provides a thermal printer paper jam taking system, which comprises a bearing base, which serves as an overall support base of the system and provides a stable mounting and running environment for a pressing member and a function execution assembly, and comprises at least two oppositely arranged support parts which are symmetrically distributed to ensure balanced structural stress.

[0031] The support part is provided with a corresponding rotating fitting structure, which needs to meet the accuracy requirement of the rotating of the pressing member, and the inner wall thereof needs to be smoothly treated to reduce the friction resistance in the rotating process of the pressing member, ensure smooth rotation of the pressing member, avoid paper jamming in the paper conveying process due to excessive friction, and ensure that the pressing member does not appear radial deviation after assembly, and further ensure the stability of the medium passage.

[0032] The pressing member is rotatably arranged in the rotating fitting structure, the outer surface of the pressing member needs to have a certain roughness, which can cooperate with the execution element to form a stable friction force during normal printing, so as to ensure that the paper can be smoothly conveyed and precise printing is realized; and the length of the pressing member is matched with the spacing between the two support parts, so that the pressing member can fully cover the medium passage and avoid the side deviation of the paper in the conveying process.

[0033] And the functional execution assembly is arranged opposite to the pressure applying member and forms the medium passage, the width of the medium passage needs to be designed according to the size of the common printing paper, to ensure that the paper of different specifications can pass smoothly; the functional execution assembly includes an execution element, a bearing member and a mounting base, the mounting base is made of rigid material, and the surface thereof needs to be smooth and flat to facilitate the stable fixation of the execution element, the mounting base is fixed on the bearing member by bolts and other fasteners, and the fixed position needs to be accurately calibrated to ensure that the execution element and the pressure applying member can be accurately aligned, and the installation deviation does not affect the printing quality; the execution element is fixed on the mounting base, the execution element needs to have good thermal sensitivity to ensure the printing clarity, and the surface thereof needs to have certain high temperature resistance to cope with the heat generated by long-term printing; the pressure applying member is located on the corresponding side of the execution element, and the initial distance between the two needs to be strictly calculated to ensure the pressure requirement in normal printing and avoid the difficulty in paper conveying caused by too small distance; the bearing member is arranged between the support parts, the structural strength of the bearing member needs to meet the weight requirement of the execution element and the mounting base, and the bearing member needs to have certain toughness to adapt to the reciprocating motion after being stressed; the bearing member can be stressed to produce reciprocating motion along the preset direction, the preset direction is perpendicular to the direction of the medium passage, and the design of the direction can ensure that the functional execution assembly can change the distance of the medium passage to the greatest extent when it is displaced, and the motion process will not interfere with other components; and the functional execution assembly can be elastically displaced under external force, the elastic displacement is powered by the elastic component in the system, and the elastic force of the elastic component needs to be adjusted to ensure that the functional execution assembly can be easily driven to displace and quickly reset after the external force is removed; the distance of the medium passage between the functional execution assembly and the pressure applying member can be changed by elastic displacement, when paper jam occurs, the expanded distance of the medium passage can eliminate the friction between the paper and the execution element and the pressure applying member, to facilitate the paper taking out; the displacement range of the functional execution assembly is limited in the preset interval, the upper limit value of the preset interval needs to ensure that the distance of the medium passage can be expanded to meet the paper taking out requirement after paper jam, and the lower limit value needs to ensure the adhesion pressure of the execution element and the pressure applying member in normal printing, to avoid the structure damage caused by too large displacement or the use effect affected by too small displacement.

[0034] The above-mentioned embodiment has the advantages that: first, through the cooperative design of the bearing base, the pressure applying member and the function executing assembly, the flexible adjustment of the medium passage spacing is realized, the problem of difficult paper taking after paper jam in the traditional thermal printer is solved, and the use convenience of the printer is greatly improved; second, the precise design and adaptation of the system components ensure the stability of paper conveying and the printing quality during normal printing, and at the same time, the displacement range of the function executing assembly is limited, so that the structure damage caused by improper displacement is avoided, and the overall service life of the printer is prolonged. The structural design of the system makes the alignment accuracy of the pressure applying member and the function executing assembly higher, and even after multiple displacement adjustments in the long-term use process, the good cooperation relationship can still be maintained, the printing failure probability caused by component cooperation deviation is effectively reduced, and at the same time, the elastic displacement design to a certain extent buffers the vibration generated in the printing process, reduces the loss of each component caused by vibration, and further improves the stability of the system.

[0035] Another embodiment provides a thermal printer paper jam taking structure, which is applied to the thermal printer paper jam taking system, and is precisely matched with the components of the system to ensure the effective functioning of the system; the thermal printer paper jam taking structure comprises: a support assembly, which is a support frame of the structure and is made of high-strength alloy material to bear the weight of the rubber roller 1 and the thermal component and the force during operation; the overall structure of the support assembly needs to be analyzed to ensure that it will not deform during long-term use and ensure the stability of the structure; the rubber roller 1 is rotatably connected between the support assemblies, bearings are arranged at both ends of the rubber roller 1, and the connection parts between the bearings and the support assemblies need to be sealed to prevent dust, paper scraps and other impurities from entering and affecting the rotation performance; the outer surface of the rubber roller 1 is wrapped with a layer of high-elasticity and wear-resistant rubber material, the hardness of the rubber material needs to be moderate to ensure that enough friction force is generated between the rubber roller 1 and the thermal component to convey the paper and to avoid paper wear caused by too high hardness; the diameter of the rubber roller 1 needs to be designed according to the printing speed of the printer and the size of the paper to ensure that the paper conveying speed matches the printing speed and improves the printing efficiency; the thermal component is installed between the support assemblies and corresponds to the position below the rubber roller 1, and the installation position of the thermal component needs to be accurately positioned to ensure that the relative position between the thermal component and the rubber roller 1 meets the printing requirements; the thermal component and the rubber roller 1 form a printing space, the height of the printing space needs to be adjusted according to the thickness of the paper to ensure that paper of different thicknesses can smoothly pass through the printing space and complete printing; the thermal component can be elastically displaced by pressing, the pressing part needs to be designed to facilitate user operation, and the pressing force needs to be moderate to avoid damage to the structure caused by excessive force or inability to drive displacement caused by insufficient force; the elastic displacement can change the distance between the thermal component and the rubber roller 1, and when paper jam occurs, the expanded distance between the thermal component and the rubber roller 1 can eliminate the extrusion and friction between the paper and the thermal component and the rubber roller 1, so that the paper can be easily taken out; the displacement of the thermal component caused by force is limited within a preset range, and the preset range needs to be set in combination with the internal space of the printer and the printing requirements to ensure sufficient distance when taking out the paper jam, avoid excessive displacement and collision with other components, and ensure that the thermal component can be accurately reset to the initial printing position after the external force is removed, without affecting subsequent printing.

[0036] The above has two advantages. One is that the structure is simple and compact, the components are reliably connected, production and assembly are facilitated, and the cost of production and maintenance of the printer is reduced. The other is that through the elastic displacement design of the thermal component, the printing space distance is conveniently adjusted, the paper jamming and paper taking problems are efficiently solved, and the user experience is improved. The corresponding arrangement of the thermal component and the rubber roller 1 and the displacement limiting design enable the thermal component to automatically adapt to the thickness of the paper through slight elastic displacement when printing paper of different thicknesses, ensure the uniformity of the printing pressure, and improve the printing quality of paper of different specifications. Meanwhile, the cooperation of the rubber material on the outer surface of the rubber roller 1 and the thermal component reduces the generation of static electricity of the paper to a certain extent during the printing process, and avoids the problems of paper adsorption and paper jamming caused by static electricity.

[0037] In the embodiment, the support assembly includes a first support 2 and a second support 3, and the first support 2 is symmetrical to the second support 3. Corresponding mounting holes A are formed in the first support 2 and the second support 3, the hole diameter of the mounting holes A needs to be accurately matched with the outer diameter of the bearings at the two ends of the rubber roller 1, so that the rubber roller 1 can stably rotate after assembly and does not appear radial shaking. The position of the mounting holes A needs to be strictly calibrated to ensure that the mounting holes A on the first support 2 and the second support 3 are on the same axis, so as to avoid the inclination of the rubber roller 1 after assembly and affect the paper conveying. The two ends of the rubber roller 1 are rotationally connected with the mounting holes A, the outer ring of the bearing at the two ends of the rubber roller 1 is tightly matched with the inner wall of the mounting hole A, and the inner ring of the bearing is fixedly connected with the shaft of the rubber roller 1. This connection mode can reduce the rotating friction of the rubber roller 1 to the minimum, ensure the smooth rotation of the rubber roller 1, reduce energy loss, and facilitate the disassembly and replacement of the rubber roller 1 in the later period.

[0038] In the above, the first support 2 and the second support 3 ensure the stable installation and smooth rotation of the rubber roller 1, provide protection for the stable conveying of the paper, and facilitate the maintenance and replacement of the rubber roller 1, thereby reducing the difficulty of later maintenance. The symmetrical arrangement of the first support 2 and the second support 3 makes the stress of the entire support assembly more balanced, effectively disperses the force generated by the rotation of the rubber roller 1 during the operation of the printer, reduces the local stress concentration of the support assembly, prolongs the service life of the support assembly, and reduces the noise during the rotation of the rubber roller 1 through the accurate cooperation of the mounting hole A and the bearing, thereby improving the comfort of the printer.

[0039] In the embodiment, the heat-sensitive component includes a heat-sensitive sheet 5, a heat-sensitive sheet support 4 and a substrate 6. The substrate 6 is made of a material with high temperature resistance and good insulation performance to avoid the heat generated by the heat-sensitive sheet 5 from affecting other components and to prevent electric leakage. The substrate 6 is fixed on the heat-sensitive sheet support 4 by screws. The number and distribution of the screws are designed to ensure that the substrate 6 will not be loose or deformed after being fixed. A buffer gasket is arranged between the substrate 6 and the heat-sensitive sheet support 4 to buffer the vibration generated by the heat-sensitive sheet 5 during operation and protect the heat-sensitive sheet 5. The heat-sensitive sheet 5 is fixed on the substrate 6 by a good heat-conducting adhesive to ensure that the heat generated by the heat-sensitive sheet 5 during operation can be quickly transferred and the stability of the heat-sensitive sheet 5 is ensured. The model and specification of the heat-sensitive sheet 5 are selected according to the printing resolution and speed requirements of the printer to ensure the printing quality and efficiency. The rubber roller 1 is located above the heat-sensitive sheet 5 to form a printing space. The height of the printing space can be adjusted by the displacement of the heat-sensitive component to adapt to paper sheets of different thicknesses. The heat-sensitive sheet 5 is arranged between the first support 2 and the second support 3. The length of the heat-sensitive sheet 5 is matched with the length of the rubber roller 1 to ensure that the printing area can be fully covered. The heat-sensitive sheet 5 can move up and down under the action of a longitudinal force. The application direction of the longitudinal force is perpendicular to the plane of the printing space. This design can directly change the height of the printing space, which is convenient for quick adjustment and will not interfere with the first support 2 and the second support 3 during the up-and-down movement, ensuring smooth movement.

[0040] In the above, the material selection, connection method and positional relationship of each component of the heat-sensitive component are determined to ensure the stable operation and function realization of the heat-sensitive component, providing reliable protection for high-quality printing and paper taking. The buffer gasket arranged between the substrate 6 and the heat-sensitive sheet support 4 can not only buffer the vibration but also compensate for the thermal expansion of the heat-sensitive sheet 5 to some extent, avoiding deformation or damage of the heat-sensitive sheet 5 due to thermal expansion and ensuring the fitting precision between the heat-sensitive sheet 5 and the rubber roller 1 to improve the stability of the printing quality.

[0041] In this embodiment, the heat-sensitive sheet support 4 is formed with clamping plates 40 at both ends, the clamping plates 40 are integrally formed with the heat-sensitive sheet 5 to ensure the structural strength, the thickness and width of the clamping plates 40 need to be designed according to the size and stress condition of the heat-sensitive sheet 5 to bear the force generated when the heat-sensitive assembly moves; a waist-shaped groove 41 is formed on the clamping plate 40, the length and width of the waist-shaped groove 41 need to be accurately calculated, the length needs to meet the maximum displacement requirement of the heat-sensitive assembly, and the width needs to be adapted to the shaft diameter of both ends of the rubber roller 1 to ensure that both ends of the rubber roller 1 can smoothly slide in the waist-shaped groove 41; the inner wall of the waist-shaped groove 41 needs to be smoothly treated to reduce the friction resistance between both ends of the rubber roller 1 and the waist-shaped groove 41 and avoid wear between them; both ends of the rubber roller 1 are placed in the waist-shaped groove 41, and the cooperation gap between both ends of the rubber roller 1 and the waist-shaped groove 41 needs to be strictly controlled to ensure that both ends of the rubber roller 1 can freely slide in the waist-shaped groove 41 and also will not appear excessive shaking to ensure the stability of the rubber roller 1 when the heat-sensitive assembly moves.

[0042] In the above, through the design of the clamping plate 40 and the waist-shaped groove 41, the sliding connection of the heat-sensitive assembly and the rubber roller 1 is realized, the upward and downward movement of the heat-sensitive assembly is guided, the movement direction of the heat-sensitive assembly is ensured to be accurate, and at the same time, the transverse displacement of the heat-sensitive assembly is limited to ensure the stability of the relative position of the heat-sensitive assembly and the rubber roller 1. The design of the waist-shaped groove 41 not only plays a guiding role, but also can support both ends of the rubber roller 1 to a certain extent during the movement of the heat-sensitive assembly, reduce the deflection deformation of the rubber roller 1, ensure the cylindricity of the rubber roller 1, and then improve the stability of paper conveying and reduce the printing deviation.

[0043] In this embodiment, a waist-shaped hole 42 is also formed on the clamping plate 40 obliquely below the waist-shaped groove 41, the opening direction of the waist-shaped hole 42 is consistent with the opening direction of the waist-shaped groove 41 to ensure that the heat-sensitive assembly can move in the same direction; the length of the waist-shaped hole 42 needs to match the preset displacement range of the heat-sensitive assembly, and the width needs to be adapted to the diameter of the positioning column B to ensure that the positioning column B can smoothly slide in the waist-shaped hole 42; the edge of the waist-shaped hole 42 needs to be chamfered to avoid jamming or wear when the positioning column B slides; the inner side of the first support 2 and the second support 3 is also protruded with a positioning column B, the positioning column B is integrally formed with the support or fixed by welding to ensure the structural strength of the positioning column B; the axis of the positioning column B needs to be parallel to the axis of the waist-shaped hole 42, and the position of the positioning column B needs to be accurate to ensure that the positioning columns B on the first support 2 and the second support 3 can be inserted into the corresponding waist-shaped holes 42 at the same time; the positioning column B is inserted and adapted with the waist-shaped hole 42, this adaptation can double guide and limit the movement of the heat-sensitive assembly, so that the heat-sensitive sheet 5 is limited in the preset range to move up and down between the first support 2 and the second support 3, which not only ensures the accuracy of the movement of the heat-sensitive assembly, but also avoids the structure damage caused by the movement of the heat-sensitive assembly beyond the range.

[0044] In the above, through the cooperation of the waist-shaped hole 42 and the positioning column B, the guiding and limiting effect of the movement of the heat-sensitive assembly is further strengthened, ensuring that the heat-sensitive assembly can only move up and down within the preset range, improving the stability and reliability of the movement of the heat-sensitive assembly, and avoiding printing failures or structural damage caused by movement deviation. The gap between the positioning column B and the waist-shaped hole 42 can compensate for errors generated during the processing and installation of each component to some extent, ensuring that even with slight errors, the heat-sensitive assembly can still move smoothly and maintain a precise movement trajectory, reducing the precision requirements of component processing and installation and reducing production costs.

[0045] In the present embodiment, the middle of one side of the heat-sensitive sheet 5 is bent to form a mounting portion C, and the bending portion needs to be reinforced to avoid breaking due to long-term stress; the shape of the mounting portion C needs to be compatible with the structure of the key 7 to ensure that the key 7 can be stably mounted; a fixing hole needs to be provided on the mounting portion C, and the diameter and position of the fixing hole need to match the fixing structure on the key 7, so that the key 7 can be fixed by screws or buckles; the mounting portion C is used to fix the key 7, the key 7 is made of a material that is wear-resistant and has good elasticity, and the surface of the key 7 needs to be treated to prevent slipping to facilitate user pressing; the stroke of the key 7 needs to match the preset displacement range of the heat-sensitive assembly to ensure that when the user presses the key 7 to the maximum stroke, the heat-sensitive assembly can be displaced to the maximum preset position, realizing the maximum expansion of the printing space distance; the key 7 and the mounting portion C need to be firmly fixed to avoid loosening of the key 7, which prevents the heat-sensitive assembly from being effectively driven to displace when the user presses.

[0046] In the above, by bending the mounting portion C on the heat-sensitive sheet 5 to fix the key 7, the installation structure of the key 7 is simplified, the use of additional mounting portion C components is reduced, the production cost is reduced, and it is also convenient for the user to drive the heat-sensitive assembly to displace by pressing the key 7, improving the operation convenience. Unexpected technical effect: the bending design of the mounting portion C makes the stress of the key 7 more evenly transmitted to the heat-sensitive assembly, avoiding local deformation of the heat-sensitive assembly due to uneven stress, and at the same time, the elastic material of the key 7 can also play a certain buffering role during pressing, reducing the damage of the impact force of the user pressing to the heat-sensitive assembly, prolonging the service life of the heat-sensitive assembly.

[0047] In the embodiment, the spring 8 is arranged at the bottom of the thermal sheet support 4, and the number of the spring 8 is designed according to the weight of the thermal sheet support 4 and the required elastic force, so as to ensure that the thermal assembly is provided with sufficient reset force. The spring 8 is uniformly arranged, so as to ensure that the thermal sheet support 4 is balanced, and the inclination of the thermal assembly during reset is avoided. The spring 8 is made of high-strength and fatigue-resistant spring steel, so as to ensure that the spring 8 has good elastic performance and service life, and can bear the weight of the thermal assembly for a long time and reset multiple times. The shell 9 is made of high-strength plastic or metal material, and the internal space of the shell 9 is matched with the overall size of the jammed paper taking structure of the thermal printer, so as to ensure that the structure can be smoothly installed in the shell 9. An opening corresponding to the button 7 is arranged on the shell 9, so as to facilitate the user to operate the button 7, and the edge of the opening is smoothly processed, so as to avoid scratching the user. The jammed paper taking structure of the thermal printer is arranged in the shell 9, the shell 9 can protect the internal structure, prevent dust and sundries from entering, and prevent external impact from damaging the internal structure. The spring 8 is elastically connected between the bottom of the thermal sheet support 4 and the shell 9, one end of the spring 8 is fixed on the bottom of the thermal sheet support 4 by welding or buckling, and the other end is fixed on the inner wall of the shell 9. This connection mode ensures that the spring 8 can stably provide elastic force. When the thermal assembly is pressed downward, the spring 8 is compressed to store elastic potential energy. After the external force is removed, the spring 8 releases the elastic potential energy to drive the thermal assembly to reset upward to the initial position.

[0048] In the above, the automatic reset function of the thermal assembly is realized by the spring 8, the user does not need to manually reset, the use convenience is improved, and the shell 9 protects the internal structure, prolongs the service life of the structure. The elastic connection of the spring 8 plays a certain shock absorption role, can buffer the vibration generated during the operation of the printer, reduces the influence of the vibration on the thermal assembly, the rubber roller 1 and other components, improves the stability of the work of the components, and the compression and reset process of the spring 8 can also reduce the impact and collision between the thermal assembly and other components, and further protect the internal structure.

[0049] The embodiments of the application are described above in combination with the drawings, and the embodiments and the features in the embodiments in the application can be combined with each other without conflict, the application is not limited to the above specific embodiments, the above specific embodiments are only illustrative, but not limited, and those skilled in the art can make many forms under the guidance of the application without departing from the purpose of the application and the protection range of the claims, which all belong to the protection of the application.

Claims

1. A paper jam handling system for a thermal printer, characterized in that, include: A load-bearing base, the load-bearing base including at least two oppositely arranged support parts, the support parts being provided with corresponding rotational engagement structures; The pressure-applying member is rotatably assembled to the rotary fitting structure; and A functional execution component is arranged opposite to a pressure-applying component to form a medium passage. The functional execution component includes an actuating element, a supporting component, and a mounting base. The mounting base is fixed to the supporting component, and the actuating element is fixed to the mounting base. The pressure-applying component is located on the corresponding side of the actuating element to form a medium passage. The supporting component is disposed between each support part and can reciprocate under force in a preset direction. Both ends of the supporting component are provided with retaining plates, and the retaining plates have waist-shaped grooves. Both ends of the pressure-applying component are adapted to be embedded in the waist-shaped grooves and can slide along the waist-shaped grooves. A waist-shaped hole is also provided on the retaining plate diagonally below the waist-shaped groove. A positioning post protrudes from the inner side of the supporting part. The positioning post is inserted and adapted to the waist-shaped hole to limit the movement trajectory of the supporting component. The functional execution component also includes an elastic reset component. One end of the elastic reset component is connected to the supporting component, and the other end is connected to the fixing structure of the supporting base. The functional execution component can generate elastic displacement under the action of external force to change the medium passage distance between it and the pressure-applying component. The displacement range of the functional execution component is limited within a preset range by the length of the waist-shaped groove and the waist-shaped hole.

2. A paper jam ejection structure for a thermal printer, applied to the paper jam ejection system for a thermal printer as described in claim 1, characterized in that, The paper jam ejection mechanism of a thermal printer includes: Support assembly; A rubber roller, the two ends of which are rotatably connected between the support assembly; A thermal component is adapted to be installed between the bracket components and corresponding to the bottom of the rubber roller. The thermal component and the rubber roller form a printing space. The thermal component can generate elastic displacement movement after being pressed to change the printing space distance between the thermal component and the rubber roller. The displacement generated by the thermal component under force is limited to a preset range.

3. The paper jam feeding structure for a thermal printer according to claim 2, characterized in that, The bracket assembly includes a first bracket and a second bracket, both of which have corresponding mounting holes, and the two ends of the rubber roller are rotatably connected to the mounting holes.

4. The paper jam feeding structure for a thermal printer according to claim 3, characterized in that, The thermal component includes a thermal sheet, a thermal sheet support, and a substrate. The substrate is fixed on the thermal sheet support, the thermal sheet is fixed on the substrate, the rubber roller is located above the thermal sheet to form a printing space, and the thermal sheet support is disposed between the first support and the second support and can move up and down under longitudinal force.

5. The paper jam feeding structure for a thermal printer according to claim 4, characterized in that, The thermal sheet support has two end plates, and the plate plates have waist-shaped grooves. The two ends of the rubber roller are placed in the waist-shaped grooves.

6. The paper jam feeding structure for a thermal printer according to claim 5, characterized in that, The card plate also has a waist-shaped hole located diagonally below the waist-shaped groove. The first and second brackets also have a positioning post protruding on their inner sides. The positioning post is inserted and adapted to the waist-shaped hole, so that the thermal sheet bracket is limited to move up and down within a preset range between the first and second brackets.

7. The paper jam feeding structure for a thermal printer according to claim 6, characterized in that, The middle bend on one side of the thermal pad bracket forms a mounting portion, which is used to fix the button.

8. The paper jam feeding structure for a thermal printer according to claim 7, characterized in that, It also includes springs, a plurality of which are arranged at intervals at the bottom of the thermal sheet support, and a housing, wherein the thermal printer paper jam and paper feeding structure is disposed within the housing, and the springs are elastically connected between the bottom of the thermal sheet support and the housing.

Images