Printing consumable box

Abstract

The invention provides a printing consumable box, and belongs to the technical field of printers. The problem that an existing printing consumable box is inconvenient to assemble is solved. The first cover body, the second cover body, the supply shaft and the recovery shaft are arranged on the box body, a first cavity is formed in the side, facing the box body, of the first cover body, a second cavity is formed in the side, facing the box body, of the second cover body, the supply shaft is installed on the first cavity / box body, the recovery shaft is installed on the second cavity / box body, and a thermal transfer ribbon led out by the supply shaft is wound on the recovery shaft. A semi-finished product type production mode is adopted, assembly is convenient, the current production capacity can be utilized to the maximum extent, and optimal rapid and efficient production can be carried out.

Description

Technical Field

[0001] The present invention belongs to the technical field of printers and relates to a printing consumable cartridge. Background Art

[0002] A label printer is a device for printing information on labels. During printing, the print head on the printer presses on the printing rubber roller, and the label and the carbon ribbon pass between the print head and the printing rubber roller. The movement mechanism drives the printing rubber roller to rotate to achieve the printing process.

[0003] As disclosed in a Chinese patent for a printing consumable cartridge [application publication number: CN119175951A], it includes a housing, a paper tape, a core, a carbon ribbon, a supply shaft, and a take-up shaft. The housing includes a first box body, a connecting arm, and a second box body. The first box body is provided with a first cavity and an outlet, the second box body is provided with a second cavity and an inlet, a paper feeding channel is formed at the connecting arm, and the first cavity, the outlet, the paper feeding channel, the inlet, and the second cavity are sequentially communicated; the core and the supply shaft are arranged in the first cavity, the take-up shaft is arranged in the second cavity, the paper tape is wound outside the core, and the carbon ribbon is wound between the supply shaft and the take-up shaft.

[0004] The above-mentioned consumable cartridge is integrally assembled. Different-width labels require different production lines. The demand for different-width labels is different, resulting in inconsistent production rhythms of the production lines, thus causing waste of production resources; the same specification of cores is used for different-width labels, and fillers or structural members are required inside to limit the labels to meet different widths of the labels, which will lead to waste of filling materials and is not environmentally friendly; during the production process, fillers or structural members need to be first placed into the housing, and then different-width labels are placed, and the operation process is cumbersome with many actions, and more efficient production cannot be achieved. Summary of the Invention

[0005] The purpose of the present invention is to address the above problems existing in the prior art and propose a printing consumable cartridge that is convenient to install.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A printing consumable cartridge includes a box body, a first cover body, a second cover body, a supply shaft, and a take-up shaft provided on the box body. A first cavity is provided on the side of the first cover body facing the box body, a second cavity is provided on the side of the second cover body facing the box body, the supply shaft is installed in the first cavity / box body, the take-up shaft is installed in the second cavity / box body, and the carbon ribbon led out from the supply shaft is wound around the take-up shaft.

[0008] In the above printing consumable cartridge, a third cover body is further provided on the box body, a third cavity is provided on the side of the third cover body facing the box body, and the core is installed in the third cavity.

[0009] The supply shaft is located at the supply end, and the recovery shaft is located at the recovery end. The supply shaft and the recovery shaft can be installed in the following ways: 1. The supply shaft is installed in the first cavity, and the recovery shaft is installed in the second cavity; 2. The supply shaft is installed in the first cavity, and the recovery shaft is installed on the cartridge body; 3. The supply shaft is installed on the cartridge body, and the recovery shaft is installed in the second cavity; 4. The supply shaft is installed on the cartridge body, and the recovery shaft is installed on the cartridge body. The installation method can be snap-in or insertion.

[0010] The first cover, the supply shaft, the second cover and the recovery shaft can form a semi-finished product one. After this semi-finished product one is installed on the cartridge body, it can form a semi-finished product two. Independent product lines can be established and packaged according to the semi-finished product one and the semi-finished product two, which can maximize the use of the current production capacity and carry out the most optimized, rapid and efficient production, and the product integrity is good. The first cover and the second cover can be used as independent covers, or the first cover and the second cover can be connected as a whole. The following content will be described in detail with the first cover and the second cover connected as a whole.

[0011] In the splicing structure of the first cover / second cover in the prior art, there is a splicing seam formed in the middle, which will wrinkle the carbon ribbon passing through the splicing seam, thus affecting the printing quality. While the first cover / second cover in this printing consumable cartridge is injection molded by an up-and-down mold, there is no splicing seam in the middle, which will not affect the carbon ribbon, the carbon ribbon will not wrinkle, and the printing quality will not be affected.

[0012] In the above-mentioned printing consumable cartridge, one end of the first cavity is provided with a first installation groove, and one end of the supply shaft is rotatably fitted in the first installation groove; the other end of the first cavity is provided with a second installation groove, and the other end of the supply shaft is rotatably fitted in the second installation groove.

[0013] In the above-mentioned printing consumable cartridge, a positioning post is provided in the first installation groove, and one end of a damping spring arranged in the supply shaft is connected to the positioning post; the second installation groove has a second rotation fitting section and a second guiding section, and a second protrusion is provided at the intersection of the second rotation fitting section and the second guiding section, and the distance from the second protrusion to the other side of the second rotation fitting section is less than the outer diameter of the supply shaft.

[0014] The damping spring is coaxially and tightly fitted in the supply shaft. One end of the damping spring has a flat bar. A flat groove is provided on the positioning post. The positioning post extends into the damping spring and is connected to the damping spring through the flat bar and the flat groove. The first installation groove has a first rotation fitting section and a first guiding section. A first filling section that forms a complete circle with the first rotation fitting section is provided on the cartridge body. When the first cover is connected to the cartridge body, one end of the supply shaft is rotatably fitted in the complete circle formed by the first filling section and the first rotation fitting section.

[0015] The second guiding section is used to guide the supply shaft to the second rotation fitting section. The second rotation fitting section is arc-shaped and rotationally fits with the outer surface of the supply shaft. The provided second protrusion can prevent the supply shaft rotationally fitted with the second rotation fitting section from disengaging. The box body is provided with a second filling section that forms a complete circle with the second rotation fitting section, and the other end thereof is rotationally fitted within the complete circle formed by the second filling section and the second rotation fitting section. Axial limitation can be achieved by a retaining edge provided on the supply shaft.

[0016] During installation, first install the damping spring onto the supply shaft, then sleeve the supply shaft onto the positioning post and connect the damping spring with the positioning post. Then, guide the other end of the supply shaft through the second guiding section so that the other end of the supply shaft passes over the second protrusion and mates with the second rotation fitting section. The assembled supply shaft rotationally fits within the first cavity to form a semi-finished product. The damping spring provides resistance and recovery force, realizing the function of recovering and adding resistance to the carbon ribbon, keeping the carbon ribbon always in a tensioned state, with better effect, lower cost, and higher efficiency.

[0017] The above-mentioned spring can be directly connected to the positioning post, or a connecting member can be provided on the spring and connected to the first cover body through the connecting member.

[0018] In the prior art, a resistance spring or foam is directly added to the end faces at both ends of the supply shaft to provide resistance for the rotation of the supply shaft and prevent the carbon ribbon from loosening. It cannot achieve recovery, and the carbon ribbon will loosen during printing and retraction. If the recovery structure is set on the printer, it will lead to a complex printer structure and high cost.

[0019] In the above-mentioned printing consumable cartridge, one end of the second cavity is provided with a third installation groove, and one end of the recovery shaft is rotationally fitted within the third installation groove; the other end of the second cavity is provided with a fourth installation groove, and one end of the recovery shaft is rotationally fitted within the fourth installation groove.

[0020] In the above-mentioned printing consumable cartridge, the third installation groove has a third rotation fitting section and a third guiding section. A third protrusion is provided at the intersection of the third rotation fitting section and the third guiding section, and the distance from the third protrusion to the other side of the third rotation fitting section is less than the outer diameter of the recovery shaft; the fourth installation groove has a fourth rotation fitting section and a fourth guiding section. A fourth protrusion is provided at the intersection of the fourth rotation fitting section and the fourth guiding section, and the distance from the fourth protrusion to the other side of the fourth rotation fitting section is less than the outer diameter of the recovery shaft.

[0021] One end of the take-up shaft is radially limited within the third rotational mating section through the third protrusion, and the other end is radially limited within the fourth rotational mating section through the fourth protrusion. Meanwhile, on the cartridge body, there are also provided a third filling section that forms a complete circle with the third rotational mating section and a fourth filling section that forms a complete circle with the fourth rotational mating section. When the second cover is connected to the cartridge body, one end of the take-up shaft is rotationally mated within the complete circle formed by the third filling section and the third rotational mating section, and the other end is rotationally mated within the complete circle formed by the fourth filling section and the fourth rotational mating section. Axial limitation can be achieved through a retaining edge provided on the take-up shaft.

[0022] The functions of the third protrusion and the fourth protrusion are to achieve pre-assembly of the take-up shaft, prevent the take-up shaft installed in the third installation groove and the fourth installation groove from coming out, thereby improving the assembly efficiency. Among them, the third protrusion and the fourth protrusion are respectively located on different sides of the take-up shaft.

[0023] The first installation groove, the second installation groove, the third installation groove and the fourth installation groove can also be replaced with round holes respectively. During installation, one end of the supply shaft is passed through the first round hole, and then the other end is passed through the second round hole. One end of the take-up shaft is passed through the third round hole, and then the other end is passed through the fourth round hole.

[0024] In the above printing consumable cartridge, plate-shaped first connecting arms are respectively provided at both ends of the cartridge body. An installation plate is provided between the two first connecting arms. The first cover is installed on the cartridge body, and the second cover is installed on the installation plate.

[0025] A paper feeding channel and a printing channel are provided between the installation plate and the cartridge body. The carbon ribbon led out by the supply shaft passes through the printing channel and then winds around the take-up shaft. The paper tape led out by the core is attached to the carbon ribbon at the printing channel and then extends out through the paper feeding channel.

[0026] In the above printing consumable cartridge, two second connecting arms are respectively provided at both ends of the first cover between the first cover and the second cover. When the whole formed by the first cover and the second cover is connected to the cartridge body, one of the second connecting arms is in contact with one of the first connecting arms, and the other second connecting arm is in contact with the other first connecting arm.

[0027] When the whole formed by the first cover and the second cover is connected to the cartridge body, one of the first connecting arms is located on one side of one of the second connecting arms and is in contact with it, and the other first connecting arm is located on one side of the other second connecting arm and is in contact with it, forming a double-layer structure, which increases the structural strength. Once a drop occurs, the double-layer structure is not easily disconnected. Even if one of the first connecting arms / second connecting arms is disconnected, the second connecting arm / first connecting arm still plays a connecting role.

[0028] In the above-mentioned printing consumable cartridge, two convex columns extending along the length direction of the recycling shaft are respectively provided at two ends of the second cover body. The two convex columns are coaxially arranged. Two clamping grooves respectively corresponding to the convex columns are provided on the mounting plate. The convex columns are rotationally fitted in the corresponding clamping grooves, and the first cover body is clamped with the cartridge body.

[0029] During installation, the convex columns are placed into the clamping grooves, and then the whole formed by the first cover body and the second cover body is rotated, and the first cover body is clamped with the cartridge body, so that the connection is convenient and reliable.

[0030] In order to facilitate the clamping connection between the first cover body and the cartridge body, a first buckle is provided on the second connecting arm, and a first clamping hole corresponding to the first buckle is provided on the first connecting arm. When the whole formed by the first cover body and the second cover body is connected to the cartridge body, the first buckle is clamped in the first clamping hole. At the same time, an elastic piece is formed by hollowing on the second connecting arm. A second buckle is provided on the elastic piece, and a second clamping hole corresponding to the second buckle is provided on the first connecting arm. When the whole formed by the first cover body and the second cover body is connected to the cartridge body, the second buckle is clamped in the second clamping hole. A third buckle is provided on the outer connecting wall. When the whole formed by the first cover body and the second cover body is connected to the cartridge body, the third buckle presses on the side edge of the second connecting arm far away from the cartridge body.

[0031] In addition to adopting the above-mentioned buckle position method, connection methods such as adhesives / heat melting can also be used to realize the connection between the first cover body and the cartridge body and the connection between the second cover body and the cartridge body.

[0032] In order to facilitate the entry of the second connecting arm, guiding inclined surfaces are provided on both the first connecting arm and the third buckle. The cartridge body, the first cover and the second cover body are all made of plastic and have a certain elastic deformation, and can be deformed under the action of external force so that each buckle can act.

[0033] A fourth buckle is provided on the first cover body, and a fourth clamping hole corresponding to the fourth buckle is provided on the cartridge body. When the whole formed by the first cover body and the second cover body is connected to the cartridge body, the fourth buckle is clamped in the fourth clamping hole.

[0034] In the above-mentioned printing consumable cartridge, one side of the mounting plate facing the second cover body has a retaining edge and a limiting piece. The limiting piece is located on the side of the retaining edge close to the cartridge body. When the second cover body is closed with the mounting plate, the retaining edge and the limiting piece limit the edge of the second cover body.

[0035] The retaining edge extends along the length direction of the edge of the second cover body to support and limit the edge of the second cover body, and prevent relative displacement between the two when pressing. The limiting pieces are multiple and extend to the inner side of the edge of the second cover body. When the edge of the second cover body is pressed inward, it is blocked by the limiting pieces to prevent inward collapse.

[0036] At the same time, it prevents the second cover body from detaching from the cartridge body after falling.

[0037] In the above-mentioned printing consumables box, a limiting protrusion is provided on the retaining edge, and the outer side of the edge of the second cover body has a limiting pit that cooperates with the limiting protrusion. When the second cover body is covered with the mounting plate, the edge of the second cover body is limited between the limiting protrusion and the limiting piece.

[0038] In the above-mentioned printing consumables box, two oppositely arranged baffles are provided on the inner side of the third cover body, and the above-mentioned winding core is rotatably arranged between the two baffles. The box body is provided with a plurality of limiting grooves for limiting the free ends of the baffles, and the plurality of limiting grooves are distributed along the length direction of the winding core.

[0039] The box body is provided with a receiving cavity for receiving the third cover body, and guide grooves extending along the installation direction of the third cover body are respectively provided at both ends of the receiving cavity, and the third cover body is provided with a guide part that slides with the guide groove. When the third cover body is installed, the guide groove can guide the guide part, effectively ensuring the position of the third cover body in the receiving cavity and improving the installation accuracy. In order to improve the structural strength of the box body, a plurality of convex strips are respectively provided at both ends of the receiving cavity, and the guide groove is located between two adjacent convex strips.

[0040] The baffle with a single-wall thickness structure has a high degree of deformation, making it easier to put the core in. When the third cover body is buckled with the box body, the free end of the baffle is located in the limit groove and cannot be deformed at this time. Its strength is improved, ensuring that the core and paper tape between the two baffles will not shake, thereby improving printing accuracy.

[0041] Among them, each limit slot corresponds to 3 slots. Under the premise of ensuring that the roll core can be smoothly inserted, when the baffle is limited in the slot positions of different limit slots, the baffle will undergo slight deformation to ensure that the roll core will not shake.

[0042] When assembling the winding core and the third cover body, paper tapes of different widths are assembled by different assembly lines, and the distance between the two baffles in the third cover body on the corresponding assembly line is equal to the width of the paper tape to be assembled on the assembly line.

[0043] In the above-mentioned printing consumables box, the paper output side of the third cover body is provided with two paper limiting plates, the distance between the two paper limiting plates is equal to the width of the paper tape, and the box body is provided with a clearance opening corresponding to the paper limiting plates. When the third cover body is closed with the box body, the paper limiting plates are inserted into the corresponding clearance openings.

[0044] The distance between the two paper limiting pieces is equal to the width of the paper tape in the third cover body. A plurality of clearance openings are arranged on the box body, and the plurality of clearance openings are arranged in sequence along the length direction of the core shaft, so that paper limiting pieces with different spacings can be positioned.

[0045] In order to achieve the snap connection between the third cover and the cartridge body, at least one fifth snap is provided at each end of the third cover, and fifth snap holes corresponding to the fifth snaps are provided at both ends of the accommodating cavity. When the third cover and the cartridge body are closed, the fifth snap is snapped into the fifth snap hole. The snapping direction of the fifth snap and the fifth snap hole extends along the length direction of the guiding groove.

[0046] In the above-mentioned printing consumables cartridge, the side of the third cover away from the paper outlet side has two intermittently arranged first convex strips, and there is a second convex strip arranged in a staggered manner with the first convex strips between the two first convex strips. Both the first convex strip and the second convex strip extend along the length direction of the core. Two first pits corresponding to the first convex strips are provided on the inner side of the side of the cartridge body away from the paper outlet side, and a second pit corresponding to the second convex strip is provided on the outer side of the side of the cartridge body away from the paper outlet side. When the third cover and the cartridge body are closed, the first convex strip extends into the first pit, and the second convex strip extends into the second pit.

[0047] Pressing the side of the second cover away from the paper outlet side / the side of the cartridge body away from the paper outlet side inward will not cause the second cover / the cartridge body to collapse inward, improving the stability.

[0048] In the above-mentioned printing consumables cartridge, a resistance foam extending along the width direction of the paper tape is further provided on the paper outlet side of the third cover. The resistance foam presses the paper tape against the cartridge body to increase the resistance to the paper tape, prevent the paper tape from retreating to the inner side of the third cover due to vibration during transportation, and can also effectively avoid excessive paper output.

[0049] Compared with the prior art, the present printing consumables cartridge has the following advantages:

[0050] The first cover, the supply shaft, the second cover, and the recovery shaft can form a semi-finished product one. After this semi-finished product one is installed on the cartridge body, it can form a semi-finished product two. Independent product lines can be established and packaged according to the semi-finished product one and the semi-finished product two, which can make the best use of the current production capacity, carry out the most optimized, rapid and efficient production, and the product integrity is good; moreover, the assembly is convenient, the connection stability between components is good, and the overall structural strength is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is a schematic structural diagram of the printing consumables cartridge.

[0052] Figure 2 is a cross-sectional view of the printing consumables cartridge.

[0053] Figure 3 is a schematic structural diagram of the printing consumables cartridge when the first cover and the second cover are in the unfolded state.

[0054] Figure 4 is a schematic structural diagram of the first cover and the second cover.

[0055] Figure 5 is Figure 4 A schematic structural diagram of the supply shaft and the recovery shaft is omitted in

[0056] Figure 6 A partial structural diagram of the supply shaft.

[0057] Figure 7 Another schematic structural diagram of the first cover and the second cover.

[0058] Figure 8 is Figure 7 A schematic structural diagram of the supply shaft and the recovery shaft is omitted in

[0059] Figure 9 An enlarged schematic diagram of the position of the limiting protrusion and the limiting pit.

[0060] Figure 10 A schematic structural diagram when the first cover, the second cover and the box body are separated.

[0061] Figure 11 Another schematic structural diagram of the printing consumable cartridge when the first cover and the second cover are in the unfolded state.

[0062] Figure 12 A schematic structural diagram of the box body.

[0063] Figure 13 A schematic diagram of the separation of the box body and the third cover.

[0064] Figure 14 An enlarged schematic diagram of the position of the first rib, the second rib, the first pit and the second pit.

[0065] Figure 15 A schematic structural diagram of the third cover for loading the paper tape of the first size.

[0066] Figure 16 A schematic structural diagram of the third cover for loading the paper tape of the second size.

[0067] Figure 17 A schematic structural diagram of the third cover for loading the paper tape of the third size.

[0068] Figure 18 A schematic diagram of the cooperation between the spring piece and the recovery shaft.

[0069] Figure 19 A cross-sectional view when the third cover is inserted into baffles with different spacings.

[0070] In the figure, 1 is the cartridge body; 2 is the first cover; 3 is the second cover; 4 is the third cover; 5 is the supply shaft; 6 is the recovery shaft; 7 is the first mounting groove; 8 is the positioning post; 9 is the damping spring; 10 is the second mounting groove; 11 is the second protrusion; 12 is the third mounting groove; 13 is the third protrusion; 14 is the fourth mounting groove; 15 is the fourth protrusion; 16 is the first connecting arm; 17 is the mounting plate; 18 is the second connecting arm; 19 is the convex post; 20 is the card slot; 21 is the edge stop; 22 is the limiting piece; 23 is the limiting protrusion; 24 is the limiting pit; 25 is the baffle; 26 is the limiting groove; 27 is the limiting paper piece; 28 is the relief opening; 29 is the first rib; 30 is the second rib; 31 is the first pit; 32 is the second pit; 33 is the one-word rod; 34 is the one-word groove; 35 is the first filling section; 36 is the second filling section; 37 is the third filling section; 38 is the fourth filling section; 39 is the first buckle; 40 is the first card hole; 41 is the second buckle; 42 is the second card hole; 43 is the third buckle; 44 is the guiding inclined surface; 45 is the fourth buckle; 46 is the fourth card hole; 47 is the guiding groove; 48 is the guiding part; 49 is the fifth buckle; 50 is the fifth card hole; 51 is the paper tape; 52 is the resistance foam; 53 is the driven wheel; 54 is the spring piece; 55 is the support cylinder. Detailed implementation manners

[0071] The following are specific embodiments of the present invention in combination with the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0072] As Figures 1-3 shown in the printing consumable cartridge, it includes a cartridge body 1, a first cover 2, a second cover 3, a third cover 4, a supply shaft 5, a recovery shaft 6 and a core provided on the cartridge body 1. As Figures 10-12 shown, plate-shaped first connecting arms 16 are respectively provided at both ends of the cartridge body 1. An installation plate 17 is provided between the two first connecting arms 16. The first cover 2 is installed on the cartridge body 1, and the second cover 3 is installed on the installation plate 17. A paper feeding channel and a printing channel are formed between the installation plate 17 and the cartridge body 2.

[0073] As Figure 4 、 5As shown in FIGS. 7 and 8, there are two second connecting arms 18 respectively located at both ends of the first cover 2 between the first cover 2 and the second cover 3. When the whole formed by the first cover 2 and the second cover 3 is connected to the box body 1, one of the second connecting arms 18 is in contact with one of the first connecting arms 16, and the other second connecting arm 18 is in contact with the other first connecting arm 16. The first connecting arm 16 can be located inside the two second connecting arms 18, or the second connecting arms 18 can be located inside the two first connecting arms 16. The first connecting arm 16 and the second connecting arm 18 form a double-layer structure, which increases the structural strength. Once a drop occurs, the double-layer structure is not easily disconnected. Even if the first connecting arm 16 / second connecting arm 18 is disconnected, the second connecting arm 18 / first connecting arm 16 still plays a connecting role.

[0074] On the side of the first cover 2 facing the box body 1, there is a first cavity. On the side of the second cover 3 facing the box body 1, there is a second cavity. The supply shaft 5 is installed on the first cavity, and the take-up shaft 6 is installed on the second cavity. The carbon ribbon led out from the supply shaft 5 is wound around the take-up shaft 6.

[0075] The supply shaft 5 and the first cover 2 form semi-finished product one, the take-up shaft 6 and the second cover 3 form semi-finished product two, and the core around which the paper tape 51 is wound and the third cover 4 form semi-finished product three. The above three semi-finished products can be pre-assembled on different assembly lines, and the semi-finished product one, semi-finished product two and semi-finished product three are assembled with the box body 1 according to the order requirements.

[0076] In some other embodiments, the supply shaft 5 can be directly installed on the box body 1, and the take-up shaft 6 can also be directly installed on the box body 1. The supply shaft 5, the take-up shaft 6 and the box body 1 form semi-finished product one, and the core around which the paper tape 51 is wound and the third cover 4 form semi-finished product two. Then, the first cover 2, the second cover 3, semi-finished product one and semi-finished product two are assembled according to the order requirements.

[0077] This embodiment adopts a semi-finished product production method, which can make the best use of the current production capacity and carry out the most optimized, rapid and efficient production.

[0078] As Figure 4 and Figure 7 shown, the supply shaft 5 and the take-up shaft 6 are parallel. As Figure 5 and Figure 6 shown, at one end of the first cavity, there is a first installation groove 7. Inside the first installation groove 7, there is a positioning post 8. One end of the damping spring 9 arranged inside the supply shaft 5 is connected to the positioning post 8. In this embodiment, the damping spring 9 is coaxially and tightly fitted inside the supply shaft 5. One end of the damping spring 9 has a flat bar 33, and a flat groove 34 is provided on the positioning post 8. The positioning post 8 extends into the damping spring 9 and is connected to the damping spring 9 through the flat bar 33 and the flat groove 34, which is convenient for assembly. The damping spring 9 provides resistance and recovery force, so that the carbon ribbon is always in a tensioned state.

[0079] The first installation groove 7 has a first rotation fitting section and a first guiding section. As Figure 11 shown, a first filling section 35 that forms a complete circle with the first rotation fitting section is provided on the box body 1. When the first cover body 2 is connected to the box body 1, one end of the supply shaft 5 is rotationally fitted within the complete circle formed by the first filling section 35 and the first rotation fitting section.

[0080] As Figure 8 shown, the other end of the first cavity is provided with a second installation groove 10. The second installation groove 10 has a second rotation fitting section and a second guiding section. A second protrusion 11 is provided at the intersection of the second rotation fitting section and the second guiding section. The distance from the second protrusion 11 to the other side of the second rotation fitting section is less than the outer diameter of the supply shaft 5.

[0081] The second guiding section is used to guide the supply shaft 5 to the second rotation fitting section. The second rotation fitting section is arc-shaped and rotationally fitted with the outer surface of the supply shaft 5. By providing the second protrusion 11, the supply shaft 5 rotationally fitted with the second rotation fitting section can be prevented from disengaging.

[0082] As Figure 11 shown, a second filling section 36 that forms a complete circle with the second rotation fitting section is provided on the box body 1. The other end is rotationally fitted within the complete circle formed by the second filling section 36 and the second rotation fitting section. Axial limiting can be achieved by a retaining edge provided on the supply shaft 5.

[0083] During installation, first install the damping spring 9 onto the supply shaft 5, then sleuth the supply shaft 5 onto the positioning post 8, and connect the damping spring 9 to the positioning post 8. Then, guide the other end of the supply shaft 5 through the second guiding section so that the other end of the supply shaft 5 passes over the second protrusion 11 and mates with the second rotation fitting section. The assembled supply shaft 5 is rotationally fitted within the first cavity to form a semi-finished product.

[0084] As Figure 5 shown, one end of the second cavity is provided with a third installation groove 12. The third installation groove 12 has a third rotation fitting section and a third guiding section. A third protrusion 13 is provided at the intersection of the third rotation fitting section and the third guiding section. The distance from the third protrusion 13 to the other side of the third rotation fitting section is less than the outer diameter of the recovery shaft 6. As Figure 8 shown, the other end of the second cavity is provided with a fourth installation groove 14. The fourth installation groove 14 has a fourth rotation fitting section and a fourth guiding section. A fourth protrusion 15 is provided at the intersection of the fourth rotation fitting section and the fourth guiding section. The distance from the fourth protrusion 15 to the other side of the fourth rotation fitting section is less than the outer diameter of the recovery shaft 6.

[0085] One end of the recovery shaft 6 is radially limited within the third rotation fitting section by the third protrusion 13, and the other end is radially limited within the fourth rotation fitting section by the fourth protrusion 15. As Figure 11As shown, a third filling section 37 that forms a complete circle with the third rotation fitting section and a fourth filling section 38 that forms a complete circle with the fourth rotation fitting section are further provided on the box body 1. When the second cover body 3 is connected to the box body 1, one end of the recovery shaft 6 is rotationally fitted within the complete circle formed by the third filling section 37 and the third rotation fitting section, and the other end thereof is rotationally fitted within the complete circle formed by the fourth filling section 38 and the fourth rotation fitting section. Axial limiting can be achieved through a retaining edge provided on the recovery shaft 6. The third protrusion 13 and the fourth protrusion 15 pre-assemble the recovery shaft 6 to prevent the inserted recovery shaft 6 from falling off. In order to make the force on the recovery shaft 6 balanced, the third protrusion 13 and the fourth protrusion 15 are respectively located on different sides of the recovery shaft 6.

[0086] In this embodiment, the connection mode of the whole formed by the first cover body 2 and the second cover body 3 to the box body 1 is first rotation and then snap connection, and the specific structure is as follows: As Figure 10 and Figure 11 shown, two convex columns 19 extending along the length direction of the recovery shaft 6 are respectively provided at both ends of the second cover body 3. The two convex columns 19 are coaxially arranged. Two C-shaped card slots 20 respectively corresponding to the convex columns 19 are provided on the mounting plate 17. The convex columns 19 are rotationally fitted within the corresponding card slots 20, and the first cover body 2 is snap-connected to the box body 1.

[0087] During installation, the convex columns 19 are placed into the card slots 20, and then the whole formed by the first cover body 2 and the second cover body 3 is rotated, and the first cover body 2 is snap-connected to the box body 1, and the connection is convenient and reliable.

[0088] A driven wheel 53 meshing with the driving wheel on the printer is coaxially provided at one end of the recovery shaft 6. When the driving wheel rotates, it will drive the driven wheel 53 to rotate, thereby realizing the rotation of the recovery shaft 6.

[0089] In order to prevent the driven wheel 53 from rotating back, as Figure 3 shown, a spring piece 54 is provided on the second cover body. The spring piece 54 has a connecting portion 55. When the second cover body 3 is closed with the box body 1, the connecting portion 55 of the spring piece 54 is pressed between the second cover body 3 and the box body 1, and the main body portion of the spring piece 54 extends into the tooth groove of the driven wheel 53. When the driven wheel 53 rotates under the action of the driving wheel, the spring piece 54 does not block, and when the driving wheel stops rotating, the spring piece 54 can limit the rotation of the driven wheel 53 back, thereby preventing the carbon ribbon from rotating back.

[0090] To facilitate the snap connection between the first cover body 2 and the box body 1, a first snap 39 is provided on the second connecting arm 18, and a first snap hole 40 corresponding to the first snap 39 is provided on the first connecting arm 16. When the integral formed by the first cover body 2 and the second cover body 3 is connected to the box body 1, the first snap 39 is snapped into the first snap hole 40. At the same time, a spring piece is formed on the second connecting arm 18 through hollowing out, a second snap 41 is provided on the spring piece, and a second snap hole 42 corresponding to the second snap 41 is provided on the first connecting arm 16. When the integral formed by the first cover body 2 and the second cover body 3 is connected to the box body 1, the second snap 41 is snapped into the second snap hole 42. A third snap 43 is provided on the outer connecting wall. When the integral formed by the first cover body 2 and the second cover body 3 is connected to the box body 1, the third snap 43 presses on the side edge of the second connecting arm 18 away from the box body 1.

[0091] To facilitate the entry of the second connecting arm 18, guide slopes 44 are provided on both the first connecting arm 16 and the third snap 43. The box body 1, the first cover body, and the second cover body 3 are all made of plastic and have a certain elastic deformation, and can be deformed under the action of an external force so that each snap can act.

[0092] A fourth snap 45 is provided on the first cover body 2, and a fourth snap hole 46 corresponding to the fourth snap 45 is provided on the box body 1. When the integral formed by the first cover body 2 and the second cover body 3 is connected to the box body 1, the fourth snap 45 is snapped into the fourth snap hole 46.

[0093] In some other embodiments, the integral formed by the first cover body 2 and the second cover body 3 can be snap-connected to the box body 1 and the connecting plate. On the premise that the snap-connection structure between the second cover body 3 and the box body 1 remains unchanged, only a snap needs to be provided on the second cover body 3 and a snap hole needs to be provided on the connecting plate to achieve this.

[0094] To avoid collapse when pressing, as Figures 9-10 shown, the side of the mounting plate 17 facing the second cover body 3 has a retaining edge 21 and a limiting piece 22. The limiting piece 22 is located on the side of the retaining edge 21 close to the box body 1. When the second cover body 3 is closed with the mounting plate 17, the retaining edge 21 and the limiting piece 22 limit the edge of the second cover body 3. The retaining edge 21 extends along the length direction of the edge of the second cover body 3 to support and limit the edge of the second cover body 3, avoiding relative displacement between the two when pressing. The limiting pieces 22 are multiple and extend to the inner side of the edge of the second cover body 3. When pressing the edge of the second cover body 3 inward, it is blocked by the limiting pieces 22 to avoid inward collapse.

[0095] As Figures 9-10As shown, a limiting protrusion 23 is provided on the retaining edge 21, and a limiting pit 24 that cooperates with the limiting protrusion 23 is provided on the outer side of the edge of the second cover body 3. When the second cover body 3 is closed with the mounting plate 17, the edge of the second cover body 3 is limited between the limiting protrusion 23 and the limiting piece 22.

[0096] As Figure 12 and Figure 13 shown, a receiving cavity for receiving the third cover body 4 is provided on the box body 1, and the third cover body 4 and the core are located in the receiving cavity. As Figure 13 shown, two oppositely arranged baffles 25 are provided on the inner side of the third cover body 4, and the core is rotatably arranged between the two baffles 25. As Figure 12 and Figure 13 shown, a number of limiting grooves 26 for limiting the free ends of the baffles 25 are provided on the box body 1, and the number of limiting grooves 26 is distributed along the length direction of the core. As Figure 19 shown, the free end of the baffle 26 extends into the correspondingly arranged limiting groove 26, and the limiting groove 26 can limit the baffle 25. In order to support and limit the core, as Figure 19 shown, a support cylinder 55 is provided on the opposite side of the baffle 26.

[0097] As Figure 12 and Figure 13 shown, guiding grooves 47 extending along the installation direction of the third cover body 4 are respectively provided at both ends of the receiving cavity, and guiding portions 48 that are slidably matched with the guiding grooves 47 are provided on the third cover body 4. When installing the third cover body 4, the guiding grooves 47 can guide the guiding portions 48, effectively ensuring the position of the third cover body 4 in the receiving cavity and improving the installation accuracy. In order to improve the structural strength of the box body 1, a plurality of ribs are respectively provided at both ends of the receiving cavity, and the guiding grooves 47 are located between two adjacent ribs.

[0098] When assembling the core and the third cover body 4, third cover bodies 4 of multiple different models are used corresponding to paper tapes 51 of different widths. As Figures 15-17 shown, the width of the paper tape 51 in the figure changes from narrow to wide, and the distance between the two corresponding baffles 25 also gradually increases. Paper tapes 51 of different widths are assembled by different production lines, and the distance between the two baffles 25 in the third cover body 4 corresponding to the production line is equal to the width of the paper tape 51 to be assembled on that production line.

[0099] As Figures 15-17 shown, two paper limiting pieces 27 are provided on the paper outlet side of the third cover body 4, and the distance between the two paper limiting pieces 27 is equal to the width of the paper tape 51. A relief opening 28 corresponding to the paper limiting piece 27 is provided on the box body 1. When the third cover body 4 is closed with the box body 1, the paper limiting piece 27 is inserted into the correspondingly arranged relief opening 28. The distance between the two paper limiting pieces 27 is equal to the width of the paper tape 51 in the third cover body 4. As Figure 12 and Figure 13As shown, a plurality of relief openings 28 are provided on the box body 1. The plurality of relief openings 28 are arranged in sequence along the length direction of the mandrel, so as to position the limit paper sheets 27 with different pitches.

[0100] As Figure 2 shown, on the paper outlet side of the third cover body 4, a resistance foam 52 extending along the width direction of the paper tape is further provided. The resistance foam 52 presses the paper tape against the box body 1 to increase the resistance to the paper tape.

[0101] In order to realize the snap connection between the third cover body 4 and the box body 1, as Figure 13 shown, at least one fifth snap 49 is respectively provided at both ends of the third cover body 4, and fifth snap holes 50 corresponding to the fifth snaps 49 are respectively provided at both ends of the accommodation cavity. When the third cover body 4 and the box body 1 are closed, the fifth snaps 49 are snapped into the fifth snap holes 50. The snapping direction of the fifth snaps 49 and the fifth snap holes 50 extends along the length direction of the guide groove 47.

[0102] As Figure 13 and Figure 14 shown, the side of the third cover body 4 away from the paper outlet side has two intermittently arranged first convex strips 29. There is a second convex strip 30 arranged in a staggered manner with the first convex strips 29 between the two first convex strips 29. Both the first convex strips 29 and the second convex strip 30 extend along the length direction of the core. On the inner side of the side of the box body 1 away from the paper outlet side, two first pits 31 corresponding to the first convex strips 29 are provided. On the outer side of the side of the box body 1 away from the paper outlet side, a second pit 32 corresponding to the second convex strip 30 is provided. When the third cover body 4 and the box body 1 are closed, the first convex strips 29 extend into the first pits 31, and the second convex strip 30 extends into the second pit 32. Pressing the side of the second cover body 3 / box body 1 away from the paper outlet side inward will not cause the second cover body 3 / box body 1 to collapse inward, improving the stability.

[0103] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A printing consumables box, characterized in that: The invention comprises a box body (1), a first cover body (2) arranged on the box body (1), a second cover body (3), a supply shaft (5) and a recovery shaft (6); the first cover body (2) is provided with a first cavity on the side facing the box body (1); the second cover body (3) is provided with a second cavity on the side facing the box body (1); the supply shaft (5) is installed on the first cavity / box body (1); the recovery shaft (6) is installed on the second cavity / box body (1); and the carbon ribbon led out from the supply shaft (5) is wound around the recovery shaft (6).

2. The printing consumables box according to claim 1, characterized in that: The box body (1) is also provided with a third cover body (4), and a third cavity is provided on a side of the third cover body (4) facing the box body (1), and a winding core is installed in the third cavity.

3. The printing consumables box according to claim 1, characterized in that: A first mounting groove (7) is provided at one end of the first cavity, and one end of the supply shaft (5) is rotatably fitted in the first mounting groove (7); a second mounting groove (10) is provided at the other end of the first cavity, and the other end of the supply shaft (5) is rotatably fitted in the second mounting groove (10).

4. The printing consumables box according to claim 1, characterized in that: A third mounting groove (12) is provided at one end of the second cavity, and one end of the recovery shaft (6) is rotatably fitted in the third mounting groove (12); a fourth mounting groove (14) is provided at the other end of the second cavity, and one end of the recovery shaft (6) is rotatably fitted in the fourth mounting groove (14).

5. The printing consumables box according to claim 1, characterized in that: The two ends of the box body (1) are respectively provided with a first connecting arm (16) in the form of a plate, a mounting plate (17) is provided between the two first connecting arms (16), the first cover body (2) is mounted on the box body (1), and the second cover body (3) is mounted on the mounting plate (17).

6. The printing consumables box according to claim 5, characterized in that: Two second connecting arms (18) are provided between the first cover body (2) and the second cover body (3), and are respectively located at the two ends of the first cover body (2). When the whole formed by the first cover body (2) and the second cover body (3) is connected to the box body (1), one of the second connecting arms (18) fits with one of the first connecting arms (16), and the other second connecting arm (18) fits with the other first connecting arm (16).

7. The printing consumables box according to claim 5, characterized in that: The side of the mounting plate (17) facing the second cover body (3) is provided with a retaining edge (21) and a limiting piece (22); the limiting piece (22) is located on the side of the retaining edge (21) close to the box body (1); when the second cover body (3) and the mounting plate (17) are covered, the retaining edge (21) and the limiting piece (22) limit the edge of the second cover body (3).

8. The printing consumables box according to claim 2, characterized in that: The inner side of the third cover body (4) is provided with two baffles (25) arranged opposite to each other, and the winding core is rotatably arranged between the two baffles (25). The box body (1) is provided with a plurality of limiting grooves (26) for limiting the free ends of the baffles (25), and the plurality of limiting grooves (26) are distributed along the length direction of the winding core.

9. The printing consumables box according to claim 2, characterized in that: The third cover body (4) is provided with two paper limiting pieces (27) on the paper output side, the distance between the two paper limiting pieces (27) is equal to the width of the paper tape, the box body (1) is provided with a clearance opening (28) corresponding to the paper limiting pieces (27), and when the third cover body (4) and the box body (1) are covered, the paper limiting pieces (27) are inserted into the corresponding clearance opening (28).

10. The printing consumables box according to claim 7, characterized in that: A limiting protrusion (23) is provided on the retaining edge (21), and a limiting recess (24) is provided on the outer side of the edge of the second cover body (3) to cooperate with the limiting protrusion (23), and when the second cover body (3) is covered with the mounting plate (17), the edge of the second cover body (3) is limited between the limiting protrusion (23) and the limiting sheet (22); The side edge of the third cover body (4) away from the paper discharge side has two intermittently arranged first convex strips (29), and a second convex strip (30) is arranged between the two first convex strips (29) and is offset from the first convex strip (29). The first convex strip (29) and the second convex strip (30) both extend along the length direction of the winding core. The inner side edge of the box body (1) away from the paper discharge side has two first recesses (31) arranged corresponding to the first convex strips (29), and the outer side edge of the box body (1) away from the paper discharge side has a second recess (32) arranged corresponding to the second convex strip (30). When the third cover body (4) and the box body (1) are covered, the first convex strip (29) extends into the first recess (31), and the second convex strip (30) extends into the second recess (32).

Images