Ribbon self-locking mechanism

Abstract

The present invention discloses a ribbon self-locking mechanism, comprising a main connecting rod, a driving frame and a switching assembly; a swing arm, which is rotatably connected to the switching assembly and is provided with a driving block with a sliding inclined surface; a mounting frame, which is movably connected to the swing arm and is provided with a driving shaft; and a driving cover, which is provided at one end of the driving shaft, is connected with a ribbon shaft, is slidably connected to the driving block, and is provided with a spring between the mounting frame. The present invention drives the main connecting rod to move horizontally through the driving frame, drives the swing arm to rotate through the switching assembly, and drives the driving cover to move axially. When the driving frame is opened, the driving cover is separated from the ribbon shaft and unlocked, and the spring is compressed. When the driving frame is closed, the driving cover automatically resets under the action of the spring, engages and locks the ribbon shaft, and the unlocking and locking of the ribbon shaft are synchronously controlled by the opening and closing of the driving frame. The operation is convenient, and the ribbon shaft is easy to disassemble and assemble, which ensures that the ribbon shaft is reliably positioned and installed, and rotates evenly and stably, effectively improving the printing quality.

Description

Technical Field

[0001] The invention relates to the technical field of card printer equipment, and in particular to a ribbon self-locking mechanism. Background Art

[0002] In daily life, personal information such as portraits, names, and units are often printed on the surface of cards to be used as proof of identity to realize the functions of various smart applications. In order to meet the printing needs of such identity cards, card printers came into being. Card printers print through ribbons. Most existing card printers place the ribbon on a ribbon rack containing a transmission gear, and then install the ribbon rack inside the card printer, so that the transmission gear on the ribbon rack meshes with the transmission gear inside the machine to drive the ribbon to rotate. Since the transmission gear on the ribbon rack does not have a corresponding positioning structure, when the matching parts change, it is very easy to affect the meshing transmission of the gears, resulting in uneven rotation of the ribbon, affecting the printing quality of the card printer. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a ribbon self-locking mechanism that can accurately position and install the ribbon, facilitate assembly and disassembly, and improve printing quality.

[0004] The ribbon self-locking mechanism according to the embodiment of the present invention includes: a main connecting rod, which is provided with a driving frame and a switching assembly; a rocker arm, which is rotatably connected to the switching assembly and is provided with a driving block with a sliding inclined surface; a mounting frame, which is movably connected to the rocker arm and has a driving shaft running through it; and a driving cover, which is arranged at one end of the driving shaft, is connected with a ribbon shaft, is slidably connected to the driving block, and has a spring arranged between the mounting frame and the driving cover.

[0005] The ribbon self-locking mechanism according to the embodiment of the present invention has at least the following technical effects: the main connecting rod is driven to move horizontally by the driving frame, and the switching component converts the horizontal movement into vertical movement, so that the rocker arm rotates, and the driving block causes the driving cover to move axially. When the driving frame is opened, the driving cover is separated from the ribbon shaft and unlocked, and the spring is compressed. When the driving frame is closed, the driving cover automatically resets under the action of the spring, engages and locks the ribbon shaft, and the unlocking and locking of the ribbon shaft are synchronously controlled by the opening and closing of the driving frame. The operation is convenient, and the ribbon shaft is easy to disassemble and assemble, ensuring that the ribbon shaft is reliably positioned and installed, and the rotation is uniform and stable, thereby effectively improving the printing quality.

[0006] According to some embodiments of the present invention, the switching assembly includes a switching gear and a switching block, and the switching block is vertically provided with a switching rack meshing with the switching gear, and is provided with a limiting groove for passing the swing rod. The switching gear is meshed with the switching rack, the switching gear rotates, and the switching block is driven to move vertically. The switching block is connected to the swing rod through the limiting groove, thereby driving the swing rod to rotate, converting the linear motion into rotation, and the structure is simple and the transmission is reliable.

[0007] According to some embodiments of the present invention, the main connecting rod is provided with a driving rack meshing with the switching gear. By meshing the switching gear with the driving rack, the main connecting rod moves, driving the switching gear to rotate, the switching gear meshes with the switching rack and moves along the switching rack direction, thereby driving the switching block to convert horizontal motion into vertical motion, with a simple structure and reliable transmission.

[0008] According to some embodiments of the present invention, the switching gear is provided with a moving rod, the main connecting rod is provided with a connecting rod through slot horizontally, the switching block is provided with a switching slot vertically, and the two ends of the moving rod are provided with the connecting rod through slot and the switching slot respectively. The moving direction and moving range of the moving rod are limited by guiding the connecting rod through slot and the switching slot, thereby guiding and limiting the moving direction and moving range of the switching gear, ensuring the directional movement of the switching gear and reliable meshing transmission.

[0009] According to some embodiments of the present invention, a positioning column is provided at one end of the swing rod, and the positioning column passes through the limiting groove and can move in the limiting groove. The swing rod is connected to the switching block by rotation through the positioning column passing through the limiting groove. When the switching block moves, the positioning column is driven to move through the limiting groove, thereby driving the swing rod to rotate, converting the linear movement into rotation, limiting the rotation range of the swing rod, and ensuring reliable transmission and rotation of the swing rod.

[0010] According to some embodiments of the present invention, a connecting rod rack is horizontally arranged at one end of the main connecting rod, and a frame gear meshing with the connecting rod rack is arranged on the driving frame. The connecting rod rack meshes with the frame gear, and the opening and closing driving frame controls the movement of the main connecting rod. When the driving frame is in a closed state, the frame gear is at the left end of the connecting rod rack. During the opening process of the driving frame, the frame gear rotates to drive the main connecting rod to move horizontally to the left. During the closing process of the driving frame, the frame gear drives the main connecting rod to move horizontally to the right, driving the switching assembly and the rocker arm to move, so that the driving cover engages with or leaves the ribbon shaft, and the synchronous control is convenient for operation.

[0011] According to some embodiments of the present invention, the ribbon shaft includes a ribbon reel and a ribbon wheel disposed at one end of the ribbon reel, and the ribbon wheel is engaged with the drive cover. The ribbon is installed through the ribbon reel, and the ribbon wheel fixes the ribbon and engages with the drive cover to drive the ribbon shaft to rotate as a whole, thereby ensuring that the ribbon is reliably positioned and rotated evenly.

[0012] According to some embodiments of the present invention, the driving cover is provided with an engagement protrusion, and the ribbon wheel is provided with a plurality of engagement grooves adapted to the engagement protrusion. Through the cooperation between the engagement protrusion and the engagement groove, the ribbon wheel and the driving cover are positioned and installed, the positioning is reliable, the installation is tight, the ribbon shaft is accurately positioned, the rotation is uniform, and the printing quality is further improved.

[0013] According to some embodiments of the present invention, a pressure cover is provided between the driving cover and the mounting frame, and the two ends of the spring are respectively in contact with the driving cover and the pressure cover. The pressure cover cooperates with the driving cover to accommodate the spring, thereby ensuring accurate installation and positioning of the spring, avoiding direct contact between the spring and the mounting frame, which causes wear of the mounting frame and affects the matching accuracy, and ensuring reliable operation of the spring.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 is a schematic structural diagram of a closed locking state of a ribbon self-locking mechanism according to an embodiment of the present invention;

[0017] Figure 2 yes Figure 1 Schematic diagram of the open and unlocked state of the ribbon self-locking mechanism shown in FIG.

[0018] Figure 3 yes Figure 1 The assembly diagram of the swing rod and the driving cover shown in ;

[0019] Figure 4 yes Figure 1 The assembly diagram of the switching assembly shown in ;

[0020] Figure 5 yes Figure 1 The structural diagram of the ribbon shaft shown in ;

[0021] Figure 6 yes Figure 1 Schematic diagram of the assembly of the ribbon shaft and the drive cover shown in ;

[0022] Figure 7 yes Figure 1 Schematic diagram of assembly of the drive cover and the pressure cover shown in FIG.

[0023] Reference numerals:

[0024] Main connecting rod 100, driving frame 110, frame gear 111, frame rack 120, driving rack 130, connecting rod through slot 140,

[0025] Switch block 200, switch rack 210, limit slot 220, switch through slot 230,

[0026] Switching gear 300, moving rod 310,

[0027] The mounting frame 400, the driving shaft 410, the driving cover 420, the engaging protrusion 421, the pressing cover 430, the spring 440, the swing rod 500, the positioning column 510, the driving block 520,

[0028] The ribbon shaft 600 , the ribbon wheel 610 , the engaging groove 611 , and the ribbon reel 620 . DETAILED DESCRIPTION

[0029] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Reference below Figures 1 to 7 The ribbon self-locking mechanism according to an embodiment of the present invention is described.

[0034] like Figures 1 to 3As shown, the ribbon self-locking mechanism according to an embodiment of the present invention includes a main connecting rod 100, the main connecting rod 100 is provided with a driving frame 110 and a switching assembly, the switching assembly is rotatably connected to a rocker arm 500, a driving block 520 with a sliding slope is provided on the rocker arm 500, the rocker arm 500 is movably connected to a mounting frame 400, a driving shaft 410 is provided through the mounting frame 400, a driving cover 420 is provided at one end of the driving shaft 410, the driving cover 420 is slidably connected to the driving block 520, the driving cover 420 is connected to the ribbon shaft 600, and a spring 440 is provided between the driving cover 420 and the mounting frame 400. It can be understood that in the process of opening and closing the drive frame 110, the main connecting rod 100 is driven to move horizontally, the switching component is driven, the swing rod 500 rotates, the driving block 520 contacts the driving cover 420, so that the driving cover 420 moves axially and engages or leaves the ribbon shaft 600. When the drive frame 110 is opened, the main connecting rod 100 moves to the left, and the swing rod 500 is controlled by the switching component to rotate downward, the driving block 520 contacts the driving cover 420 and pulls the driving cover 420, the spring 440 is compressed, and the driving cover 420 leaves the ribbon shaft 600 in the axial direction. The ribbon shaft 600 is unlocked, and the ribbon can be taken out and replaced. When the driving frame 110 is closed, the main connecting rod 100 moves to the right, the rocker arm 500 rotates upward, and the pulling force of the driving block 520 on the driving cover 420 gradually decreases. Under the elastic force of the spring 440, the driving cover 420 is reset and approaches along the axial direction until it re-engages with the ribbon shaft 600, locks the ribbon shaft 600, and repositions and installs it. The unlocking and locking of the driving cover 420 and the ribbon shaft 600 are controlled by the opening and closing of the driving frame 110. The operation is convenient and the disassembly and assembly of the ribbon shaft 600 is simple, which ensures that the positioning and installation of the ribbon shaft 600 are reliable, and the rotation is uniform and stable, thereby effectively improving the printing quality.

[0035] Furthermore, a connecting rod rack is horizontally arranged at one end of the main connecting rod 100, and a frame gear 111 meshing with the connecting rod rack is arranged on the driving frame 110. It can be understood that when the driving frame 110 is in a closed state, the frame gear 111 is located at the left end of the connecting rod rack, and when the driving frame 110 is opened, the frame gear 111 rotates to drive the main connecting rod 100 to move horizontally to the left, and when the driving frame 110 is closed, the main connecting rod 100 is driven to move horizontally to the right, and the horizontal motion is converted into vertical motion through the switching component, the swing arm 500 rotates, and the driving cover 420 is controlled by the driving block 520 to leave or engage with the ribbon shaft 600, so as to realize the unlocking and locking of the ribbon shaft 600, and the synchronous control is convenient for operation.

[0036] Specifically, the switching assembly is arranged in the middle of the main connecting rod 100, and two ribbon shafts 600 are arranged, which are symmetrically arranged on both sides of the switching assembly. Correspondingly, two rocker arms 500, mounting frames 400, drive shafts 410, springs 440 and drive covers 420 are each arranged, which are symmetrically arranged on both sides of the switching assembly. The unlocking and locking of the two ribbon shafts 600 are controlled simultaneously by the switching assembly, and synchronous control is achieved, which is convenient to operate.

[0037] like Figure 2 and Figure 4 As shown, in some embodiments of the present invention, the switching assembly includes a switching gear 300 and a switching block 200, and the switching block 200 is vertically provided with a switching rack 210 meshing with the switching gear 300, and is provided with a limiting groove 220 for passing through the swing rod 500. Further, a positioning column 510 is provided at one end of the swing rod 500, and the other end is hinged with the mounting frame 400. The positioning column 510 is provided through the limiting groove 220 and can move in the limiting groove 220. It can be understood that the switching gear 300 is meshed with the switching rack 210, the switching gear 300 rotates, drives the switching block 200 to move vertically, and the limiting groove 220 moves synchronously. The positioning column 510 moves in the limiting groove 220 and is driven by the limiting groove 220 to drive the swing rod 500 to rotate, converting the linear motion into rotation. The structure is simple, the rotation range of the swing rod 500 is limited, and the transmission is reliable.

[0038] Among them, a driving rack 130 meshing with the switching gear 300 is arranged on the main connecting rod 100, a moving rod 310 is arranged through the switching gear 300, a connecting rod through groove 140 is arranged horizontally on the main connecting rod 100, a switching groove is arranged vertically on the switching block 200, and both ends of the moving rod 310 are respectively arranged through the connecting rod through groove 140 and the switching groove. It can be understood that the main connecting rod 100 moves horizontally, driving the rack 130 to move horizontally synchronously, driving the switching gear 300 to rotate, and moving in the opposite direction to the main connecting rod 100 in the horizontal direction, driving the moving rod 310 to move in the connecting rod slot 140, and the connecting rod slot 140 plays a guiding and limiting role. At the same time, the switching gear 300 is meshed with the switching rack 210, and the switching gear 300 rotates, driving the switching block 200 to move vertically, and the moving rod 310 moves vertically in the switching slot, and the switching slot plays a guiding and limiting role, converting the horizontal movement of the main connecting rod 100 into the vertical movement of the switching block 200, and ensuring the directional movement of the switching gear 300 through the connecting rod slot 140 and the switching slot, and the meshing transmission is reliable.

[0039] like Figure 5 and Figure 6As shown, in some embodiments of the present invention, the ribbon shaft 600 includes a ribbon reel 620 and a ribbon wheel 610 disposed at one end of the ribbon reel 620, the ribbon wheel 610 is engaged with the driving cover 420, further, the driving cover 420 is provided with an engaging protrusion 421, and the ribbon wheel 610 is provided with a plurality of engaging grooves 611 adapted to the engaging protrusion 421. It can be understood that the ribbon is installed on the ribbon reel 620, the ribbon wheel 610 positions the ribbon, and at the same time engages with the engaging protrusion 421 of the driving cover 420 through the engaging groove 611, the ribbon shaft 600 is positioned and installed, the ribbon shaft 600 is driven to rotate as a whole, and the installation is tight, so as to ensure that the ribbon shaft 600 is accurately positioned and rotates evenly, and the printing quality is further improved.

[0040] like Figure 7 As shown, in some embodiments of the present invention, a pressure cover 430 is provided between the driving cover 420 and the mounting frame 400, and the two ends of the spring 440 are respectively in contact with the driving cover 420 and the pressure cover 430. It can be understood that the pressure cover 430 is movably embedded in the driving cover 420, and the spring 440 is stored between the pressure cover 430 and the driving cover 420. When the driving cover 420 is pulled away from the ribbon shaft 600 by the driving block 520, the spring 440 is compressed, and the distance between the driving cover 420 and the pressure cover 430 is reduced. When the driving cover 420 is engaged with the ribbon shaft 600, under the action of the spring 440, the distance between the driving cover 420 and the pressure cover 430 increases, and the ribbon shaft 600 is reset to engage, so as to ensure that the spring 440 is accurately installed and positioned, and avoid the spring 440 directly contacting the mounting frame 400, which causes the mounting frame 400 to wear and affect the matching accuracy, and ensure that the spring 440 works reliably.

[0041] Reference below Figures 1 to 7 The ribbon self-locking structure according to the embodiment of the present invention is described in detail with a specific embodiment. It is worth noting that the following description is only an exemplary description and is not a specific limitation of the invention.

[0042] The ribbon self-locking structure according to the embodiment of the present invention comprises a main connecting rod 100 and a driving frame 110, wherein a connecting rod rack is arranged at one end of the main connecting rod 100, a frame gear 111 meshed with the connecting rod rack is arranged at one end of the driving frame 110, a switching gear 300 and a switching block 200 are arranged in the middle of the main connecting rod 100, the switching gear 300 is installed between the main connecting rod 100 and the switching block 200, a driving rack 130 meshed with the switching gear 300 is arranged horizontally in the middle of the main connecting rod 100, a switching rack 210 meshed with the switching gear 300 is arranged vertically on the switching block 200, a moving rod 310 is arranged through the switching gear 300, a connecting rod through groove 140 is arranged on the main connecting rod 100, a switching through groove 230 is arranged on the switching block 200, two ends of the moving rod 310 respectively penetrate the connecting rod through groove 140 and the switching through groove 230, and the switching block 2 00 is symmetrically arranged on both sides of the mounting frame 400, each mounting frame 400 is hinged with a swing rod 500, and the switching block 200 is symmetrically arranged with a limit groove 220. A positioning column 510 penetrating the limit groove 220 is arranged at one end of the swing rod 500, a driving shaft 410 is penetrated by the mounting frame 400, and a driving cover 420 is arranged at one end of the driving shaft 410. A driving block 520 slidingly connected with the driving cover 420 is arranged on the swing rod 500, a pressure cover 430 is arranged between the driving cover 420 and the mounting frame 400, and a spring 440 is accommodated between the pressure cover 430 and the driving cover 420. A ribbon shaft 600 is connected to the driving cover 420, and the ribbon shaft 600 includes a ribbon wheel 610 and a ribbon reel 620. A plurality of engaging grooves 611 are arranged on the ribbon wheel 610, and an engaging protrusion 421 adapted to the engaging groove 611 is arranged on the driving cover 420.

[0043] The ribbon self-locking structure according to the embodiment of the present invention can achieve at least the following effects by being configured in this way: the main connecting rod 100 is driven to move horizontally by the driving frame 110, the switching gear 300 is rotated, and the switching block 200 is moved vertically, thereby controlling the rotation of the rocker arm 500, pulling the driving cover 420, unlocking the ribbon shaft 600, releasing the driving cover 420, and the spring 440 automatically resets the driving cover 420 to lock the ribbon shaft 600. The opening and closing of the driving frame 110 synchronously controls the unlocking and locking of the ribbon shaft 600. The operation is convenient, and the ribbon shaft 600 is easy to disassemble and assemble, ensuring that the ribbon shaft 600 is reliably positioned and installed, and rotates evenly and stably, thereby effectively improving the printing quality. The gear and rack meshing transmission is adopted, and the structure is simple and the transmission is reliable.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A ribbon self-locking mechanism, characterized in that: include: A main connecting rod, provided with a drive frame and a switching assembly; A swing rod, rotatably connected to the switching assembly, and provided with a driving block with a sliding inclined surface; A mounting frame, movably connected to the swing rod, and having a driving shaft extending therethrough; as well as A drive cover is arranged at one end of the driving shaft, connected to the ribbon shaft, slidably connected to the driving block, and a spring is arranged between the mounting frame; the switching assembly includes a switching gear and a switching block, a switching rack meshing with the switching gear is vertically arranged on the switching block, and a limiting groove for passing the rocker arm is arranged; a connecting rod rack is horizontally arranged at one end of the main connecting rod, and a frame gear meshing with the connecting rod rack is arranged on the driving frame.

2. The ribbon self-locking mechanism according to claim 1, characterized in that: The main connecting rod is provided with a driving rack meshing with the switching gear.

3. The ribbon self-locking mechanism according to claim 1, characterized in that: The switching gear is penetrated by a moving rod, the main connecting rod is horizontally provided with a connecting rod through slot, the switching block is vertically provided with a switching slot, and both ends of the moving rod are respectively penetrated by the connecting rod through slot and the switching slot.

4. The ribbon self-locking mechanism according to claim 1, characterized in that: A positioning column is arranged at one end of the swing rod, and the positioning column penetrates the limiting groove and can move in the limiting groove.

5. The ribbon self-locking mechanism according to claim 1, characterized in that: The ribbon shaft comprises a ribbon reel and a ribbon wheel arranged at one end of the ribbon reel, and the ribbon wheel is engaged with the driving cover.

6. The ribbon self-locking mechanism according to claim 5, characterized in that: The driving cover is provided with a coupling protrusion, and the ribbon wheel is provided with a plurality of coupling grooves adapted to the coupling protrusion.

7. The ribbon self-locking mechanism according to claim 1, characterized in that: A pressure cover is arranged between the driving cover and the mounting frame, and two ends of the spring are respectively in contact with the driving cover and the pressure cover.

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