Damping structure for a tape roll, printing module and printing device

Abstract

Embodiments of the present application provide a ribbon damping structure, a printing module and a printing device, and relate to the technical field of printing devices. The ribbon damping structure comprises a mounting member, a damping assembly and a first elastic member. The damping assembly is rotatable relative to the mounting member, and the first elastic member applies an elastic force to the damping assembly to resist rotation of the damping assembly. During the process of driving the ribbon to be wound or unwound and driving the damping assembly to rotate relative to the mounting member by an external force, the position of the damping assembly changes relative to the mounting member. The first elastic member gradually deforms, and the elastic force gradually increases, so that the damping friction force between the damping assembly and the mounting member smoothly increases, avoiding the color ribbon or the printing medium tension being too large due to the instantaneous sharp increase of the damping friction force, and preventing the consumables from being damaged due to the instantaneous tension mutation. At the same time, this can effectively inhibit the ribbon from having an instantaneous excessive speed due to inertia, thereby avoiding the medium from being relaxed, redundant or wrinkled, so that the ribbon runs smoothly and the tension is uniform during the winding or unwinding process.

Description

Technical Field

[0001] This application relates to the field of printing apparatus technology, and more particularly to a damping structure with a roll, a printing module, and a printing apparatus. Background Technology

[0002] A printing apparatus is a device used to print patterns, text, etc. on paper. The printing apparatus contains a carbon ribbon roll and a paper tape roll. During printing, the carbon ribbon on the carbon ribbon roll and the printing paper on the paper tape roll are closely attached and fed synchronously. The print head selectively heats the heating points according to the image signal, causing the carbon ribbon ink to melt and transfer to the paper surface. After the ink cools and solidifies, it forms clear and wear-resistant images and text, relying on thermal melting and transfer to form the image.

[0003] In existing printing equipment, the carbon ribbon or paper tape roll is prone to excessively fast unwinding speed during the tape feeding process. This can lead to the carbon ribbon or paper tape becoming loose, redundant, wrinkled, or even broken when the tension changes abruptly, seriously affecting printing stability and product yield. Summary of the Invention

[0004] The purpose of this application is to provide a damping structure with a roll, a printing module, and a printing apparatus to solve the aforementioned technical problems existing in the prior art.

[0005] In a first aspect, embodiments of this application provide a damping structure for a tape roll, the damping structure for the tape roll including a mounting member, a damping assembly and a first elastic member, the damping assembly being rotatably disposed relative to the mounting member, the damping assembly being used to connect with the tape roll, the damping assembly being in frictional engagement with the mounting member to apply a damping frictional force to the tape roll to resist its rotation, the two ends of the first elastic member being connected to the mounting member and the damping assembly respectively, and the first elastic member being used to apply an elastic force to the damping assembly to resist its rotation.

[0006] Secondly, embodiments of this application provide a printing module, which includes a roll-type damping structure as described in the first aspect.

[0007] Thirdly, embodiments of this application provide a printing apparatus, which includes a printing module as described in the second aspect.

[0008] The technical solution adopted in this application embodiment can achieve the following beneficial effects: the tape roll includes, but is not limited to, ribbon rolls and printing tape rolls, etc. The tape roll is connected to a damping component, and is driven by an external force to rotate relative to the mounting component. The damping component is driven and rotates relative to the mounting component. The damping component and the mounting component form a friction fit, and the mounting component generates damping friction force on the damping component to suppress the excessively fast rotation of the damping component and the tape roll on it, thereby preventing the ribbon or printing media on the tape roll from becoming loose, redundant, or wrinkled.

[0009] Compared to existing technologies, this application's embodiment allows the damping component to rotate relative to the mounting component. A first elastic element applies an elastic force to the damping component to resist its rotation. During the process of the external force driving the tape roll to rewind and unwind, and driving the damping component to rotate relative to the mounting component, the position of the damping component relative to the mounting component changes. The first elastic element gradually deforms, and the provided elastic force gradually increases, resulting in a smooth increase in the damping friction between the damping component and the mounting component. This avoids excessive tension in the ribbon or printing media caused by a sudden and rapid increase in damping friction, preventing material loss due to sudden tension changes. Simultaneously, this effectively suppresses the tape roll from rotating too fast due to inertia, thereby preventing the media from becoming loose, redundant, or wrinkled. This ensures smooth operation and uniform tension of the tape roll during rewinding or unwinding, improving the overall operational stability of the printing device. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of a printing apparatus shown in an exemplary embodiment of this application; Figure 2 yes Figure 1 Sectional view along line AA; Figure 3 This is a schematic diagram of the structure of a printing module shown in an exemplary embodiment of this application; Figure 4 This is a schematic diagram of the printing module from another perspective, illustrating an exemplary embodiment of this application; Figure 5 yes Figure 4 Enlarged view of point a in the image; Figure 6 This is a schematic diagram of the damping structure shown in an exemplary embodiment of this application; Figure 7 This is an exploded schematic diagram of a damping structure shown in an exemplary embodiment of this application; Figure 8 This is a schematic diagram of the damping structure from another perspective, illustrating an exemplary embodiment of this application; Figure 9 This is a schematic diagram of the damping structure in another state, as illustrated in an exemplary embodiment of this application; Figure 10 This is a schematic diagram of the damping structure in another state, as shown in an exemplary embodiment of this application; Figure 11 This is a schematic diagram of the damping structure shown in another exemplary embodiment of this application; Figure 12 This is a schematic diagram of the damping structure from another perspective, illustrating another exemplary embodiment of this application; Figure 13 This is a schematic diagram illustrating the winding structure, driving structure, and torque limiting mechanism in an exemplary embodiment of this application; Figure 14 This is a schematic diagram of the winding structure, driving structure, and torque limiting mechanism from another perspective, illustrating an exemplary embodiment of this application. Figure 15 yes Figure 14 Sectional view along line BB.

[0012] In the diagram: 1. Printing module; 100. Damping structure; 110. Mounting component; 111. Limiting part; 120. Damping assembly; 121. Damping plate; 1211. First limiting structure; 1212. Second limiting structure; 122. Damping mating plate; 1221. Through hole; 123. Drive shaft; 130. First elastic element; 140. Pressing assembly; 141. Second elastic element; 142. First adjusting element; 143. First abutting plate; 144. Second abutting plate; 2. Printing device; 200. Device body; 210. Ribbon roll; 211. Ribbon; 220. Rewinding structure; 230. Drive structure; 240. Torque limiting mechanism; 241. Input pulley; 242. Transmission component; 243. Third elastic element; 244. Output shaft; 245. One-way bearing; 246. Second adjusting element. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those shown in the illustrations or descriptions, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0015] In related technologies, to suppress problems such as redundancy and wrinkling caused by instantaneous overspeed during unwinding of consumables, dampers are typically installed at the coil. The damping friction provided by the damper hinders coil rotation, thus preventing excessive unwinding speed. However, in implementing this application, the applicant discovered that these dampers typically provide a constant damping friction force balanced with the tension. Furthermore, to effectively suppress overspeed under different tension conditions, the maximum damping friction force of the damper is often set too high. However, at the moment of unwinding start or stop, the winding tension and the damping friction force are in opposite directions. The instantaneous tension of the coil is large, and the superposition of this large instantaneous tension and the opposing constant damping friction force causes a sharp increase in tension on the consumable, leading to breakage, tensile deformation, or damage.

[0016] This application provides a damping structure 100 with a roll, please refer to... Figure 1 This is to address the problem of excessive instantaneous tension causing the consumable material to break during sudden tension changes. Furthermore, for the sake of subsequent description, the wound damping structure 100 will be referred to as damping structure 100 in the following text.

[0017] Please see Figure 1 , Figure 2 as well as Figure 3 The damping structure 100 is used in the printing apparatus 2. The printing apparatus 2 adapted to the damping structure 100 also includes an apparatus body 200, on which both the ribbon roll 210 and the printing tape roll can be mounted. The damping structure 100 is used on the apparatus body 200. Further, the apparatus body 200 also includes a transport module, a printing module 1, and a cutting mechanism. The transport module is used to transport the printing medium of the printing tape roll along a predetermined path. The printing module 1 is used to print information onto the printing medium. The printing module 1 can melt the ink on the ribbon 211 and print it onto the surface of the printing medium to form clear and stable text, patterns, logos, or at least a combination of both on the surface of the printing medium. The cutting mechanism is located on the output path of the printing medium and is used to cut the printing medium after printing is completed.

[0018] The damping structure 100 can be used on the printing module 1. The damping structure 100 provides damping friction during the conveying of the ribbon 211, preventing damage, wrinkling, or breakage of the ribbon 211 due to a sudden increase in instantaneous tension. Furthermore, in the printing apparatus 2, the number of printing modules 1 can be multiple, such as two, three, or more. Multiple printing modules 1 can print text and patterns of different colors or different areas on the same printing medium. The number of damping structures 100 is correspondingly set to multiple, with each damping structure 100 corresponding to a printing module 1, thus ensuring that the ribbon 211 corresponding to each printing module 1 receives stable damping and limiting.

[0019] In the embodiments of this application, please refer to Figure 3 The damping structure 100 may include a mounting member 110, a damping assembly 120, and a first elastic member 130. The mounting member 110 and the damping assembly 120 are rotatably coupled, and the first elastic member 130 connects the mounting member 110 and the damping assembly 120.

[0020] The damping assembly 120 is rotatably disposed relative to the mounting member 110. The damping assembly 120 is used to connect with the tape roll and frictionally engages with the mounting member 110 to apply a damping frictional force to the tape roll to resist its rotation. The tape roll includes, but is not limited to, ribbon roll 210 or printing tape roll, etc. The following description uses ribbon roll 210 as an example. The ribbon roll 210 includes a spool and a ribbon 211 wound around the spool. The ribbon 211 is driven by a conveyor module to drive the spool to rotate. The spool is connected to the damping assembly 120. Under the action of the driving force, the spool rotates, and the ribbon roll 210 and its connected damping assembly 120 rotate relative to the mounting member 110.

[0021] The damping assembly 120 frictionally engages with the mounting member 110 to apply a damping frictional force to the tape roll to resist its rotation. For example, when the damping assembly 120 rotates, it applies a driving force to the mounting member 110, which remains relatively fixed, thus generating a damping frictional force between the mounting member 110 and the damping assembly 120. The frictional engagement between the damping assembly 120 and the mounting member 110 allows the damping frictional force to suppress excessive rotation of the damping assembly 120 and the tape roll 210 on it, thereby preventing slack, redundancy, or wrinkles in the tape 211 on the tape roll 210. The first elastic element 130 can be a spring or a sheet, and the printing medium can be ordinary paper, thermal paper, or PET tape, etc., without limitation. PET refers to polyethylene terephthalate (PET).

[0022] Please see Figure 4 as well as Figure 5The first elastic element 130 is connected at both ends to the mounting member 110 and the damping assembly 120, respectively, and is used to apply an elastic force to the damping assembly 120 to resist its rotation. In this embodiment, the damping assembly 120 is rotatable relative to the mounting member 110, and the first elastic element 130 applies an elastic force to the damping assembly 120 to resist its rotation. During the process of the external force driving the ribbon roll 210 to unwind and rotate relative to the damping assembly 120, the position of the damping assembly 120 relative to the mounting member 110 changes. The first elastic element 130 gradually deforms, and the provided elastic force gradually increases, causing the damping friction between the damping assembly 120 and the mounting member 110 to rise steadily. This avoids excessive tension on the ribbon 211 due to a sudden and rapid increase in damping friction, preventing damage to the ribbon 211 from sudden tension changes. At the same time, this can effectively suppress the instantaneous excessive speed of the ribbon roll 210 due to inertia, thereby preventing the ribbon 211 from becoming loose, redundant, or wrinkled, so that the ribbon roll 210 runs smoothly and with uniform tension during winding or unwinding, and improves the operational stability of the printing device 2.

[0023] Please see Figure 4 During the continuous rotation of the subsequent mounting component 110, after the damping plate 121 rotates to a certain angle, it stops rotating, and the damping friction no longer increases. This maintains a balance with the tension on the current damping assembly 120, achieving stable ribbon delivery 211. During the unwinding or rewinding process, or when changing the ribbon roll 210, as the driving force decreases or disappears, the force acting on the damping assembly 120 also decreases or disappears. The rotation angle of the damping assembly 120 gradually returns to its original position, and the deformation of the first elastic element 130 gradually recovers. The damping friction smoothly decreases from its maximum value to 0 or other values. In this process, the damping structure 100 can both suppress the inertial rotation of the ribbon roll 210 through damping, preventing the ribbon 211 from becoming loose, redundant, or wrinkled, and prevent excessive tension on the ribbon 211 due to excessive residual damping friction. This ensures that the tension change of the ribbon 211 is gradual throughout the process, guaranteeing a stable and reliable printing process.

[0024] It should be noted that, as Figure 4 As shown, Figure 4 The diagram shows a schematic of the structure of the damping component 120 and the ribbon roll 210. The damping component 120 is used to connect to the ribbon roll 210. Of course, the damping component 120 in this embodiment can also be used to connect to the printing tape roll to avoid problems such as damage, wrinkling or breakage of the printing medium caused by a sudden increase in instantaneous tension, and to protect the installation of the printing tape roll. This will not be elaborated on further here.

[0025] In the embodiments of this application, please refer to Figure 6 and Figure 7The damping assembly 120 may include a damping plate 121, a damping mating plate 122, and a drive shaft 123. The drive shaft 123 is rotatably connected to the mounting component 110 and connected to the ribbon roll 210, allowing the ribbon roll 210 to rotate around the drive shaft 123. The damping mating plate 122 and the damping plate 121 are in frictional engagement. For example, both the damping plate 121 and the damping mating plate 122 are sheet-like structures, which allows their surfaces to adhere to each other, resulting in a frictional engagement.

[0026] Please see Figure 7 The first elastic element 130 connects to the damping plate 121, and the damping mating plate 122 is fixedly connected to the drive shaft 123. For example, the damping mating plate 122 has a through hole 1221, through which the damping mating plate 122 is sleeved on the outside of the drive shaft 123, and the wall of the through hole 1221 forms a limiting fit with the outer peripheral surface of the drive shaft 123, so that the damping mating plate 122 rotates synchronously with the drive shaft 123 in the circumferential direction. At the same time, the damping plate 121 is rotatably mounted on the drive shaft 123. Because the damping mating plate 122 can move along the axial direction of the drive shaft 123, the damping mating plate 122 can abut against the damping plate 121 in the axial direction and apply positive pressure to the damping plate 121.

[0027] Please see Figure 7 When the drive shaft 123 rotates, the damping mating plate 122 provides power for the rotation of the damping plate 121. Friction is generated between the damping mating plate 122 and the damping plate 121, driving the damping plate 121 to rotate relative to the mounting part 110 under the drive of the damping mating plate 122. This realizes the relative motion transmission between the damping plate 121 and the damping mating plate 122. Then, the first elastic element 130 applies an elastic force to the damping plate 121 to resist its rotation, avoiding a sudden increase in friction and preventing the ribbon 211 from being damaged due to a sudden change in instantaneous tension. At the same time, it effectively suppresses the ribbon roll 210 from having problems such as slack, redundancy, and wrinkles due to excessive instantaneous rotation speed caused by inertia, thereby improving the operational stability of the printing device 2.

[0028] In addition, in some other cases, the number of damping mating plates 122 is at least two, such as two, three or more. At least two damping mating plates 122 can be fixedly connected to the drive shaft 123. At least two damping mating plates 122 are respectively disposed on opposite sides of the damping plate 121 and are in contact with the damping plate 121, which can increase the effective friction area, make the damping friction force more uniform, and make the operation more stable.

[0029] In the embodiments of this application, please refer to Figure 1 and Figure 7The mounting member 110 may be provided with a limiting part 111, which is located on the rotation path of the damping plate 121. When the damping plate 121 rotates to a preset angle, the damping plate 121 and the limiting part 111 abut against each other. Relative to the damping assembly 120, the limiting part 111 remains stationary with the mounting member 110. During the rotation of the damping plate 121, as the rotation angle increases, the elastic force of the first elastic element 130 gradually increases, and the corresponding damping friction force also gradually increases. When the damping plate 121 rotates to the preset angle and abuts against the limiting part 111, the damping plate 121 can no longer rotate, and the relative position between the damping plate 121 and the mounting member 110 remains fixed, so that the elastic force of the first elastic element 130 and the damping friction force generated between them gradually remain constant. This satisfies the damping requirements during the start-up and stop phases of the ribbon roll 210, and also prevents the ribbon 211 from being transported too slowly due to the continuous increase of damping friction, thereby ensuring stable printing quality and work efficiency.

[0030] For further details, please refer to Figure 7 and Figure 8 One of the limiting portion 111 and the damping plate 121 is provided with a first limiting structure 1211 and a second limiting structure 1212. The first limiting structure 1211 and the second limiting structure 1212 are respectively disposed on opposite sides of the other to limit the rotation of the damping plate 121 in the first direction L1 and the second direction L2. The structures of the first limiting structure 1211 and the second limiting structure 1212 may be the same or different, which is not limited in this application. For example, the first limiting structure 1211 and the second limiting structure 1212 are disposed on the damping plate 121, and the first limiting structure 1211 and the second limiting structure 1212 are respectively disposed on opposite sides of the limiting portion 111. As the force of the driving ribbon roll 210 increases, the relative position of the damping plate 121 changes, and the first elastic member 130 deforms accordingly to form a greater elastic force to resist the rotational force of the mounting member 110. Figure 9 As shown, when the damping plate 121 rotates along the first direction L1 to a preset angle, the first limiting structure 1211 and the limiting part 111 abut against each other, restricting the damping plate 121 from continuing to rotate. Figure 10 As shown, when the damping plate 121 rotates to a preset angle along the second direction L2, the second limiting structure 1212 and the limiting part 111 abut against each other, which can also limit the damping plate 121 from continuing to rotate.

[0031] The first direction L1 and the second direction L2 are opposite. For example, the first direction L1 can be a clockwise rotation direction around the axis of the drive shaft 123, and the second direction L2 can be a counterclockwise rotation direction around the axis of the drive shaft 123.

[0032] In this embodiment, the damping plate 121 is angularly limited in both the first direction L1 and the second direction L2. This allows the force resisting the rotation of the damping mating plate 122 by the damping plate 121 to switch from the variable elastic force provided by the first elastic element 130 to the stable limiting support force provided by the limiting part 111. The limiting effect of the limiting part 111 is stable and does not change with the continued rotation of the damping plate 121, thus fixing the position of the damping plate 121 and preventing the first elastic element 130 from continuing to deform. Consequently, the damping friction force no longer increases with the increase of external force. At this time, the damping friction force can be balanced with the actual tension force, remaining stable regardless of whether the maximum damping friction force is reached. This also ensures that the tension force on the ribbon 211 is always within a stable and controllable range. This satisfies the damping requirements during the unwinding start and stop phases and avoids the ribbon 211 conveying speed becoming too low due to the continuous increase of damping friction force, thereby ensuring stable printing quality and work efficiency.

[0033] Of course, in some other cases, one of the limiting part 111 and the damping plate 121 may be provided with a limiting groove, and the other may be embedded in the limiting groove. The relative displacement between the limiting part 111 and the damping plate 121 is limited by the groove wall of the limiting groove, thereby ensuring printing quality and work efficiency. This will not be elaborated here.

[0034] Preferably, please continue reading. Figure 7 The first limiting structure 1211 and the second limiting structure 1212 can be formed on the damping plate 121. The first limiting structure 1211 and the second limiting structure 1212 are protruding relative to the outer periphery of the damping plate 121 and are respectively located on opposite sides of the limiting portion 111. The first limiting structure 1211 and the second limiting structure 1212 are formed by the protrusion of the outer periphery of the damping plate 121 itself, eliminating the need for separate structures, simplifying the processing technology, and reducing manufacturing costs. At the same time, this can avoid limiting failure and ensure that the damping plate 121 can be stably limited in the first direction L1 or the second direction L2, thereby stably achieving the effect of constant damping friction force.

[0035] Furthermore, in one embodiment, one end of the first elastic member 130 is connected to the limiting portion 111 of the mounting member 110, and the other end is connected to either the first limiting structure 1211 or the second limiting structure 1212. In one case, such as... Figure 8 As shown, one end of the first elastic member 130 is connected to the limiting part 111, and the other end is connected to the first limiting structure 1211. Please refer to [link / reference]. Figure 9 During the rotation of the damping plate 121 along the first direction L1, the first elastic element 130 can deform and generate elastic force, which can prevent the limiting part 111 and the first limiting structure 1211 from getting close.

[0036] In another case, such as Figure 11As shown, one end of the first elastic member 130 is connected to the limiting part 111, and the other end is connected to the second limiting structure 1212. Please refer to [link / reference]. Figure 12 During the rotation of the damping plate 121 along the second direction L2, the first elastic element 130 deforms and generates elastic force, which prevents the limiting part 111 and the second limiting structure 1212 from approaching each other. This arrangement directly positions the first elastic element 130 through the first limiting structure 1211 and the second limiting structure 1212, eliminating the need for additional independent connecting parts and assembly space, effectively improving the structural integration of the damping assembly 120, and reducing the overall volume of the printing module 1. At the same time, the elastic force transmission path is more direct and the force is more reliable, which simplifies the assembly process.

[0037] Please refer again to the embodiments in this application. Figure 7 The damping structure 100 may further include a pressing component 140, which abuts against one of the damping component 120 and the mounting component 110, and provides pressure for the frictional fit between the damping component 120 and the mounting component 110. By continuously applying positive pressure between the damping component 120 and the mounting component 110 through the pressing component 140, a stable frictional fit relationship is formed between the damping component 120 and the mounting component 110, thereby generating a corresponding damping frictional force when the two rotate relative to each other, providing reliable damping effect for the ribbon roll 210 during the winding and unwinding process.

[0038] In a more specific embodiment, the pressing assembly 140 may include a second elastic element 141 and a first adjusting element 142. The second elastic element 141 may be a spring or a sheet spring, etc., and is not limited thereto. The second elastic element 141 is sleeved on the outside of the drive shaft 123, with one end abutting against the damping sheet 121 or the damping mating sheet 122, and the other end abutting against the first adjusting element 142. The first adjusting element 142 is interconnected with the drive shaft 123 and its relative position is adjustable. For example, the first adjusting element 142 is a bolt with internal threads, and the outer periphery of the drive shaft 123 is provided with external threads, so the first adjusting element 142 can be threadedly connected to the drive shaft 123. By adjusting the relative position of the first adjusting member 142 and the transmission shaft 123, the amount of compression deformation of the second elastic member 141 is changed, thereby adjusting the pressure applied by the second elastic member 141 to the damping plate 121. This allows for the adjustable setting of the maximum damping friction force between the damping assembly 120 and the mounting member 110, adapting to the requirements of different specifications of ribbons 211 or different ribbon 211 supply rates, and improving the adaptability of the printing device 2.

[0039] Preferably, a first abutment piece 143 and a second abutment piece 144 are provided between the first adjusting member 142 and the second elastic member 141. The first abutment piece 143 and the second abutment piece 144 are respectively disposed on opposite sides of the second elastic member 141, so that the force of the first adjusting member 142 is stably transmitted to the second elastic member 141. This can reduce the deflection and wear of the second elastic member 141, ensure that the pressure applied by the second elastic member 141 to the damping assembly 120 is uniformly transmitted, and improve the stability of damping adjustment.

[0040] This application also provides a printing module 1, please refer to it again. Figure 1 The printing module 1 includes the damping structure 100 as described above. This gives the printing module 1 the beneficial effects of any of the aforementioned solutions, which will not be elaborated further here.

[0041] In the embodiments of this application, please refer to Figure 13 The ribbon roll 210 has a wound ribbon 211. The printing module 1 also includes a winding structure 220 and a drive structure 230. The drive structure 230 drives the winding structure 220 to rotate, enabling the winding structure 220 to wind the printed ribbon 211. Furthermore, the printing module 1 also includes a print head, which can be located between the mounting member 110 and the winding structure 220. The winding structure 220 can drive the ribbon 211 to wind up and simultaneously provide power for the ribbon 211 to exit from the mounting member 110.

[0042] Please continue reading. Figure 13 as well as Figure 14 A torque limiting mechanism 240 is provided between the drive structure 230 and the winding structure 220. The torque limiting mechanism 240 limits the magnitude of the torque transmitted from the drive structure 230 to the winding structure 220, ensuring that the traction torque received by the winding structure 220 remains stable within a set maximum value. The maximum traction torque output by the torque limiting mechanism 240 to the winding structure 220 is less than or equal to the maximum damping torque formed by the mounting member 110 on the damping assembly 120. The maximum damping torque formed by the damping assembly 120 on the mounting member 110 is the maximum resistance torque exerted by the mounting member 110 on the damping assembly 120, hindering its rotation. The maximum traction torque output by the torque limiting mechanism 240 to the winding structure 220 is the maximum driving torque that the torque limiting mechanism 240 can transmit to the winding structure 220. During the conveying process of the ribbon 211, the traction torque of the winding structure 220 never exceeds the damping torque of the damping component 120. This ensures that the ribbon 211 can be pulled smoothly without causing the mounting component 110 to spin freely or rotate at excessive speed. As a result, the ribbon 211 is always evenly tightened and kept taut during the conveying process, avoiding slackness, wrinkles, deviation, or jumping.

[0043] In a more specific implementation, please refer to Figure 14 and Figure 15 The torque limiting mechanism 240 may include an input pulley 241, a transmission component 242, a third elastic component 243, and an output shaft 244. The third elastic component 243 may be a spring or a sheet spring, and is not used for limiting. The drive structure 230 is connected to the input pulley 241 via a belt drive, i.e., a synchronous belt connects the drive structure 230 and the input pulley 241. The transmission component 242 is connected to the output shaft 244, and the third elastic component 243 presses the transmission component 242 and the input pulley 241 against each other, so that the transmission component 242 and the input pulley 241 are in frictional engagement. The drive structure 230 provides driving force to the input pulley 241. When the driving force is within a set range, the transmission component 242 and the input pulley 241 remain in contact and stably transmit power, so that the winding structure 220 can continuously and stably wind up the ribbon 211. When the driving force exceeds the set value, the friction between the transmission component 242 and the input pulley 241 is insufficient to continue transmitting power, and the two slide relative to each other, no longer transmitting excessive power to the winding structure 220. This reliably limits the magnitude of the torque output to the winding structure 220, ensuring that the winding structure 220 always obtains a stable tension that does not exceed the set upper limit, thus achieving a constant upper limit tension output.

[0044] On the printing module 1, the unwinding side damping assembly 120 relies on the first elastic element 130 to act on the damping plate 121, forming frictional damping that gradually increases with rotation, thereby suppressing the instantaneous overspeed of the ribbon roll 210 due to inertia. The winding side torque limiting mechanism 240 provides a stable and controllable constant tension on the winding side through pulley friction transmission. Since the traction force applied on the winding side is constrained by the threshold of the torque limiting mechanism 240 and cannot increase indefinitely, even if the damping on the unwinding side experiences a sudden surge due to abnormal conditions, the damping friction of the torque limiting mechanism 240 remains stable at the set value, preventing excessive tension. Instead, the transmission of force exceeding the limit is automatically cut off through controlled slippage of the input pulley 241, ensuring stable operation of the ribbon 211. Thus, the unwinding side damping assembly 120 and the winding side torque limiting mechanism 240 cooperate with each other. In terms of transmission, the damping component 120 is used to eliminate instantaneous speed disturbances at the driven end, and the torque limiting mechanism 240 is used to maintain the continuous traction force stability at the active end, so that the ribbon 211 will not be loosened or wrinkled due to overspeed caused by unwinding inertia during the entire conveying process, nor will it be stretched, deformed or broken due to the superposition of tension at both ends, thus achieving stable conveying and reliable printing of the ribbon 211.

[0045] In a more specific embodiment, the torque limiting mechanism 240 may further include a one-way bearing 245. The input pulley 241 is connected to the output shaft 244 via the one-way bearing 245. The input pulley 241 is sleeved on the one-way bearing 245, which only allows the input pulley 241 to drive the output shaft 244 in a specified direction; in the opposite direction, it locks the shaft from rotating freely. The rotation direction of the one-way bearing 245 can be either clockwise or counterclockwise, which ensures that the drive structure 230 can stably drive the input pulley 241 to rotate. During the process of printing module 1 stopping or replacing ribbon roll 210, the force of ribbon 211 driving damping component 120 will decrease or disappear, the deformed first elastic element 130 will return to its original state, and the damping plate 121 of damping component 120 will have a reverse tendency under the action of the first elastic element 130, so that the drive shaft 123 of damping component 120 and the winding structure 220 connected to ribbon 211 will rotate together.

[0046] At this time, the one-way bearing 245 restricts the output shaft 244 from rotating in the reverse direction, preventing the take-up structure 220 from rotating under reverse drive. Since the ribbon 211 is tightly wound on the take-up structure 220, the reverse locking state at the take-up end is transmitted to the unwinding side through the ribbon 211. This prevents the ribbon roll 210 and the drive shaft 123 from reversing under the reset force of the first elastic element 130, thus keeping the ribbon 211 taut and preventing slack, sagging, or misalignment.

[0047] Preferably, the torque limiting mechanism 240 further includes a second adjusting member 246, which abuts against the third elastic member 243. The second adjusting member 246 is disposed on the output shaft 244, and its position on the output shaft 244 is adjustable. By adjusting the relative position of the second adjusting member 246 and the output shaft 244, the amount of compression deformation of the third elastic member 243 is changed, thereby adjusting the pressure applied by the third elastic member 243 to the transmission member 242. This allows for adjustable setting of the maximum damping friction force between the torque limiting mechanism 240 and the winding structure 220, adapting to the requirements of different specifications of ribbon 211 or different ribbon 211 supply rates, and improving the adaptability of the printing device 2.

[0048] This application also provides a printing apparatus 2, please refer to the previous section. Figure 2 and Figure 3 The printing apparatus 2 includes the printing module 1 as described above. This gives the printing apparatus 2 the beneficial effects of any of the aforementioned solutions, which will not be elaborated further here.

[0049] The printing device 2, which is compatible with the printing module 1, can adopt a vertical structure. The vertical structure occupies less space, making it easier to transport and deploy in confined spaces, and is suitable for various restricted installation scenarios. The carbon ribbon roll can be directly picked up, placed, and replaced on the operating side of the equipment, allowing a single person to operate independently on one side, effectively improving the convenience of disassembly, assembly, and maintenance.

[0050] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0051] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0052] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A damping structure with a coil, characterized in that, The coiled damping structure includes a mounting component, a damping assembly, and a first elastic element, wherein: The damping assembly is rotatably disposed relative to the mounting member, the damping assembly is used to connect with the tape roll, and the damping assembly is in frictional engagement with the mounting member to apply a damping frictional force to the tape roll to resist its rotation. The first elastic element is connected at both ends to the mounting component and the damping assembly, respectively, and is used to apply an elastic force to the damping assembly to resist its rotation.

2. The damping structure with a coil according to claim 1, characterized in that, The damping assembly includes a damping plate, a damping mating plate, and a drive shaft. The damping mating plate is fixedly connected to the drive shaft, and the damping plate is rotatably mounted on the drive shaft. The damping mating plate and the damping plate are in frictional engagement. The first elastic element connects to the damping plate. When the drive shaft rotates, the damping mating plate provides power for the rotation of the damping plate. And / or, the coiled damping structure further includes a pressing component that abuts against one of the damping component and the mounting member, and provides pressure for the frictional engagement between the damping component and the mounting member.

3. The damping structure with a coil according to claim 2, characterized in that, The mounting component is provided with a limiting part, which is located on the rotation path of the damping plate. When the damping plate rotates to a preset angle, the damping plate and the limiting part abut against each other.

4. The damping structure with a coil according to claim 3, characterized in that, One of the limiting part and the damping plate is provided with a first limiting structure and a second limiting structure. The first limiting structure and the second limiting structure are respectively disposed on opposite sides of the other to restrict the rotation of the damping plate in a first direction and a second direction, wherein the first direction and the second direction are opposite.

5. The damping structure with a coil according to claim 4, characterized in that, The first limiting structure and the second limiting structure are formed on the damping sheet, wherein: The first limiting structure and the second limiting structure are provided to protrude relative to the outer periphery of the damping sheet and are respectively located on opposite sides of the limiting portion; And / or, one end of the first elastic member is connected to the limiting portion of the mounting member, and the other end is connected to either the first limiting structure or the second limiting structure.

6. The damping structure with a coil according to claim 3, characterized in that, The pressing assembly includes a second elastic element and a first adjusting element. The second elastic element is sleeved outside the transmission shaft. One end of the second elastic element abuts against the damping sheet or the damping mating sheet, and the other end abuts against the first adjusting element. The first adjusting element is connected to the transmission shaft and its relative position is adjustable.

7. A printing module, characterized in that, The printing module includes a roll-type damping structure as described in any one of claims 1-6.

8. The printing module according to claim 7, characterized in that, The mounting component is used to connect to a ribbon roll having a wound ribbon. The printing module further includes a winding structure and a driving structure. The driving structure drives the winding structure to rotate, enabling the winding structure to wind the printed ribbon. A torque limiting mechanism is provided between the driving structure and the winding structure. The maximum traction torque output by the torque limiting mechanism to the winding structure is less than or equal to the maximum damping torque formed by the mounting component on the damping assembly.

9. The printing module according to claim 8, characterized in that, The torque limiting mechanism includes an input pulley, a transmission component, a third elastic component, and an output shaft. The drive structure is connected to the input pulley, the transmission component is connected to the output shaft, and the third elastic component presses the transmission component and the input pulley against each other to achieve frictional engagement between them.

10. A printing apparatus, characterized in that, The printing apparatus includes a printing module as described in any one of claims 7-9.

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