A double-sided head printing machine

Abstract

The application discloses a double-sided number head printer, which comprises a core plate, a first printing mechanism arranged on the core plate and an automatic full and half cutting mechanism. The automatic full and half cutting mechanism comprises a cutting knife group, an anvil plate group and a full and half cutting power mechanism for driving the anvil plate group to switch between a half cutting position and a full cutting position. The first printing mechanism comprises a first printing swing arm in a Z-shaped rod structure, one end of the swing arm is rotatably connected to the core plate, a middle part of the swing arm is connected to a first printing unit, and the other end of the swing arm is movably arranged on the core plate and connected to the full and half cutting power mechanism. The first printing swing arm and the anvil plate group are driven by the full and half cutting power mechanism to realize linkage, the anvil plate group is in the full cutting position when the swing arm is in a loosening position, and the anvil plate group is in the half cutting position when the swing arm is in a pressing position. The double-sided number head printer further comprises a second printing mechanism. The double-sided number head printer can automatically realize one-time loading to meet double-sided printing of a sleeve and automatic full and half cutting, can guarantee printing precision, is convenient and labor-saving to operate, has low waste and low cost, and greatly improves printing efficiency and printing quality.

Description

Technical Field

[0001] This invention relates to the field of line number printers, and in particular to a double-sided line number printer. Background Technology

[0002] Currently, most wire marking printers on the market can only print on one side of the tubing, lacking the ability to print on both sides simultaneously. In practical use, to achieve double-sided printing, the tubing must be manually inserted into the single-sided wire marking printer twice. After printing, it needs to be manually cut to the corresponding length for ease of use. However, the accuracy of the tubing's insertion position and whether it will twist or shift during its movement cannot be guaranteed when inserting it into the wire marking printer twice can lead to misalignment and poor symmetry in the printing. Furthermore, the repeated insertion and removal are time-consuming and laborious, the editing input is inefficient, the manual cutting of the segment length has large deviations, the repeated consumption of consumables is wasteful, and the printing efficiency is low, severely restricting the construction efficiency of secondary cables. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a double-sided numbering printer that can automatically print double-sided sleeves in one go, and automatically cut half and full after printing to prevent the sleeves from shifting during the process, ensure the printing accuracy of double-sided printing, and make the operation convenient, labor-saving, and waste-free, greatly improving printing efficiency and printing quality, thereby overcoming the shortcomings of existing line numbering printers.

[0004] To solve the above-mentioned technical problems, the present invention provides a double-sided number header printer, including a core board and a first printing mechanism and an automatic full / half cutting mechanism disposed thereon, wherein the automatic full / half cutting mechanism is disposed at the sleeve output end of the first printing mechanism;

[0005] The automatic full and half cutting mechanism includes a cutting blade assembly, an anvil assembly that cooperates with the cutting blade assembly, and a full and half cutting power mechanism that drives the anvil assembly to switch between half cutting and full cutting positions.

[0006] The first printing mechanism includes a first printing swing arm, which adopts a Z-shaped rod structure. One end of the Z-shaped rod structure is rotatably connected to the core plate via a pivot, and a first printing unit is connected to its middle position. The other end is movably disposed on the core plate and connected to the full / half-cut power mechanism. The first printing swing arm and the anvil assembly are linked together under the drive of the full / half-cut power mechanism. When the first printing swing arm is in the released position, the anvil assembly is in the full-cut position. When the first printing swing arm is in the pressed position, the anvil assembly is in the half-cut position.

[0007] In a further improvement, the full-half-cut power mechanism includes a power gear set, a full-half-cut cam, and a tension spring set. The power gear set includes a motor and a transmission gear set meshing with it. The full-half-cut cam drives the first printing swing arm to a released state under the action of the transmission gear set.

[0008] The tension spring assembly includes a first tension spring, a second tension spring, and a third tension spring. One end of the first tension spring is connected to the movable end of the first printing arm, and the other end is connected to the first bracket on the core plate. The first tension spring is used to cause the first printing arm to return to the pressed state and provide printing clamping force. One end of the second tension spring is connected to the movable end of the first printing arm, and the other end is connected to the anvil assembly. One end of the third tension spring is connected to the second bracket on the core plate, and the other end is connected to the anvil assembly. The second and third tension springs provide opposing forces to the anvil assembly. When the first printing arm is in the released state, the second tension spring tightens the anvil assembly, making it in the full-cut position. When the first printing arm is in the pressed position, the third tension spring tightens the anvil assembly, making it in the half-cut position.

[0009] Further improvements include a second printing mechanism located on the opposite side of the first printing mechanism, wherein the sleeve output end of the second printing mechanism is connected to the sleeve input end of the first printing mechanism, and the second printing mechanism and the first printing mechanism are respectively used to print the front and back sides of the same sleeve.

[0010] In a further improvement, the second printing mechanism includes a second printing swing arm, which adopts an L-shaped rod structure. The bend of the L-shaped rod structure is rotatably connected to the core plate via a pivot. A second printing unit is connected to its first end, and its second end is movably disposed on the core plate. The second end swings under the interaction of the cam tooth and the fourth tension spring, thereby driving the second printing unit at the first end to be in a loosened or pressed state.

[0011] In a further improvement, the first printing mechanism includes a first tube feeding mechanism and a first ribbon recycling mechanism, both driven by a first motor; the second printing mechanism includes a second tube feeding mechanism and a second ribbon recycling mechanism, both driven by a second motor.

[0012] In a further improvement, the second printing mechanism is also equipped with an auxiliary tube feeding roller mechanism and a tube inlet positioning and clamping mechanism at the tube input end.

[0013] In a further improvement, an adjustable pressure tube mechanism is provided on the tube passage of the first and second printing mechanisms. The adjustable pressure tube mechanism includes a fixed frame, a sliding adjustment plate, and an adjustment power mechanism. The fixed frame includes a fixed base plate and two fixed shafts vertically arranged on its upper part. The fixed base plate is fixed to the core plate. The sliding adjustment plate includes an adjustment base plate and an adjustment top plate, which are partially connected. Each of the adjustment base plate and the adjustment top plate has two adjustment holes for the fixed shafts to pass through. The first adjustment hole on the adjustment base plate and the second adjustment hole on the adjustment top plate are concentric when static. The adjustment power mechanism is connected to the sliding adjustment plate and drives the adjustment top plate to move horizontally relative to the adjustment base plate, so that the second adjustment hole on the adjustment top plate is not concentric with the first adjustment hole on the adjustment base plate. The vertically misaligned adjustment holes are tightly clamped with the fixed shafts, thereby fixing the height of the sliding adjustment plate on the fixed shafts to press down the sleeve in the tube passage and prevent it from moving up and down.

[0014] In a further improvement, the adjusting power mechanism uses a screw with a tapered surface at the root. The adjusting base plate and the adjusting top plate are respectively provided with a third adjusting hole and a fourth adjusting hole for the screw to pass through simultaneously. The third adjusting hole is an internally threaded hole that engages with the screw's thread, and the fourth adjusting hole is a non-threaded through hole that is not concentric with the third adjusting hole. The screw is inserted from the side of the fourth adjusting hole. During the continuous tightening process with the third adjusting hole, the tapered surface of the screw interacts with the fourth adjusting hole, causing the third adjusting hole and the fourth adjusting hole to be concentric, thereby realizing the horizontal movement of the adjusting top plate relative to the adjusting base plate.

[0015] In a further improvement, the first and second adjustment holes are located near the partial connection between the adjustment base plate and the adjustment top plate, while the third and fourth adjustment holes are located away from the partial connection between the adjustment base plate and the adjustment top plate.

[0016] In a further improvement, the adjusting power mechanism adopts a cam-rocker structure.

[0017] With this design, the present invention has at least the following advantages:

[0018] 1. This invention, a double-sided number printer, achieves automatic half-cutting during printing and automatic full-cutting after printing by linking the first printing arm and the anvil assembly under the drive of a full / half-cutting power mechanism. Furthermore, the two printing mechanisms enable automatic printing of both sides of the sleeve in a single insertion. The adjustable pressure tube mechanism prevents the sleeve from shifting during its journey, ensuring printing accuracy on both sides. It can achieve batch double-sided precision printing and automatic half-cutting and full-cutting after printing. The operation is convenient, labor-saving, and waste-free, greatly improving printing efficiency and quality.

[0019] 2. The present invention also utilizes the adjustable pressure tube mechanism to allow the sliding adjustment plate to slide freely on the fixed shaft in a static state, and to allow the sliding adjustment plate to be fixed at any position on the fixed shaft by adjusting the mutual misalignment of the top and bottom adjustment plates through the power adjustment mechanism. This satisfies the pressing requirements of sleeves of different diameters, with scientifically reasonable pressure, ensuring smooth tube movement, preventing sleeve slippage, improving the printing effect of the wire marking printer, and facilitating disassembly and assembly, making operation simple and practical. Attached Figure Description

[0020] The above is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a structural schematic diagram of an embodiment of the double-sided header printer of the present invention (the printing arm is in a pressed state).

[0022] Figure 2 This is a schematic diagram of the structure of an embodiment of the double-sided header printer of the present invention (the printing arm is in the released state).

[0023] Figure 3 This is a three-dimensional structural diagram of the adjustable pressure tube mechanism in the double-sided header printer of the present invention.

[0024] Figure 4 yes Figure 3 A cross-sectional view of line AA in the middle. Detailed Implementation

[0025] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that a more thorough understanding of the invention will be achieved and that the full scope of the invention will be conveyed to those skilled in the art.

[0026] This embodiment of the double-sided number printer includes a core board 10 and a sleeve inlet positioning and clamping mechanism, an auxiliary tube feeding roller mechanism, a second printing mechanism, a first printing mechanism, and an automatic full and half cutting mechanism sequentially disposed on the core board. That is, the sleeve enters from the sleeve inlet positioning and clamping mechanism, passes through the auxiliary tube feeding roller mechanism, the second printing mechanism, and the first printing mechanism in sequence, and then extends out from the automatic full and half cutting mechanism to complete the sleeve printing.

[0027] See attached document Figure 1 and Figure 2 As shown, the automatic full and half cutting mechanism includes a cutting blade assembly 11, an anvil assembly 12 that cooperates with the cutting blade assembly 11, and a full and half cutting power mechanism 13 that drives the anvil assembly 12 to switch between half cutting and full cutting positions.

[0028] Specifically, the cleaver assembly 11 is movably fixed to the core board 10 via the cleaver holder 14, and can slide up and down as needed to cooperate with the cutting board assembly 12 to achieve half-cutting and full-cutting purposes. It should be noted that the cleaver holder 14 and cleaver assembly 11 can be implemented using any existing structure, and no specific limitation is made here. The cutting board assembly 12 includes at least two cutting board surfaces. One is a half-cut surface, on which a groove can be provided to achieve the purpose of half-cutting. When the cutting board assembly 12 is in the half-cutting position, this half-cut surface interacts with the cleaver assembly; this half-cutting position is the default position of the cutting board assembly 12. The other cutting board surface is a full-cut surface, a flat surface, to achieve the purpose of full-cutting. When the cutting board assembly 12 is in the full-cutting position, this full-cut surface interacts with the cleaver assembly. The cutting board assembly 12 can be switched between the full-cutting and half-cutting positions by rotating 30 degrees.

[0029] In this embodiment, the first printing mechanism includes a first printing swing arm 21. The first printing swing arm 21 adopts a Z-shaped rod structure. One end of the Z-shaped rod structure is rotatably connected to the core plate 10 via a rotating shaft 22. A first printing unit 23 is connected at the middle position. The first printing unit 23 cooperates with the ribbon and the first printing roller 253 to achieve simultaneous tube feeding and heat transfer, completing the reverse side printing of the sleeve. The other end of the Z-shaped rod structure is movably disposed on the core plate 10. If the Z-shaped rod structure can swing through the arc-shaped hole 24, the first printing swing arm 21 can switch between a loose state and a tight state. The other end of the Z-shaped rod structure (the movable end of the first printing swing arm 21) is connected to the full and half-cutting power mechanism 13, so that the first printing swing arm 21 and the anvil assembly 12 are linked together under the drive of the full and half-cutting power mechanism 13. When the first printing arm 21 is in the released position, the anvil assembly 12 is in the full-cut position; when the first printing arm 21 is in the pressed position, the anvil assembly 12 is in the half-cut position.

[0030] More specifically, the full-half-cut power mechanism 13 includes a full-half-cut motor 131, a transmission gear set 132, a full-half-cut cam 133, and a tension spring assembly. The full-half-cut cam 133 has two working positions: from 0-180°, the first printing swing arm 21 is supported and released; from 180°-360°, the first printing swing arm 21 is in a pressed state. The transmission gear set 132, under the action of the full-half-cut motor 131, drives the full-half-cut cam 133 to rotate, thereby driving the first printing swing arm 21 to swing. That is, the full-half-cut motor 131 and the transmission gear set 132 form a power gear set, driving the full-half-cut cam 133 and the first printing swing arm 21 to swing, driving the first printing swing arm 21 to a released state, facilitating the installation of the sleeve and ribbon cartridge.

[0031] The tension spring assembly includes a first tension spring 134, a second tension spring 135, and a third tension spring 136. One end of the first tension spring 134 is connected to the movable end of the first printing swing arm 21, and the other end is connected to the first bracket 101 on the core plate 10. The first tension spring 134 is used to cause the first printing swing arm 21 to return to the pressed state and provide printing pressing force. One end of the second tension spring 135 is connected to the movable end of the first printing swing arm 21, and the other end is connected to the anvil assembly 12. One end of the third tension spring 136 is connected to the second bracket 102 on the core plate 10, and the other end is connected to the anvil assembly 12. The second tension spring 135 and the third tension spring 136 provide opposite forces to the anvil assembly 12. When the first printing swing arm 21 is in the loose state, the second tension spring 135 tightens the anvil assembly 12, making it in the full-cut position. When the first printing swing arm 21 is in the pressed position, the third tension spring 136 tightens the anvil assembly 12, making it in the half-cut position.

[0032] In this embodiment, the sleeve output end of the second printing mechanism is connected to the sleeve input end of the first printing mechanism. The second printing mechanism and the first printing mechanism are used to print the front and back sides of the same sleeve, respectively. As shown in the attached figure, the second printing mechanism is located on the opposite side of the first printing mechanism to achieve front-side printing of the sleeve.

[0033] The second printing mechanism includes a second printing swing arm 31, which adopts an L-shaped rod structure. The bent part of the L-shaped rod structure is rotatably connected to the core plate 10 via a rotating shaft 32. A second printing unit 33 is connected to its first end, which cooperates with a ribbon and a second printing roller 353 to achieve simultaneous tube feeding and heat transfer, completing the front-side printing of the sleeve. Its second end is movably mounted on the core plate 10. If the L-shaped rod structure can swing through an arc-shaped hole 34, the second printing swing arm 31 can switch between a loosened and a pressed state. The second end of the L-shaped rod structure swings under the action of a cam tooth 301, thereby driving the second printing unit 33 at the first end to be in a loosened or pressed state. The cam tooth 301 rotates via a drive motor 302 and a transmission gear set 303. The second printing mechanism also includes a fourth tension spring 304, one end of which is connected to the first end of the L-shaped rod structure, and its second end is connected to a third bracket 103 on the core plate 10. The fourth tension spring 304 is used to cause the second printing swing arm 31 to return to the pressed state and provide printing clamping force.

[0034] In this embodiment, the first printing mechanism further includes a first tube feeding mechanism 25 and a first ribbon recovery mechanism 26. The first tube feeding mechanism 25 includes a first motor 251 and a first drive gear set 252 driven by it, as well as a first rubber roller gear 253 meshing with the first drive gear set 252. The first rubber roller gear 253 cooperates with the first printing unit 23 and, under the action of the first motor 251, drives the tube forward or backward by friction. The first ribbon recovery mechanism 26 includes a first take-up gear 261 and a first take-up damping gear 262. The first take-up damping gear 262 meshes with the first drive gear set 252 and is used for transmitting power with constant torque, providing slippage protection under heavy load. The first take-up gear 261 uses a one-way bearing 263. The first take-up gear 261 cooperates with the reverse printing ribbon cartridge, receiving power from the first motor 251, the first drive gear set 252, and the first take-up damping gear 262. It rotates counter-clockwise in one direction to achieve the take-up action after printing the ribbon. At this time, the first motor 251 drives the first rubber roller gear 253 to perform the tube feeding action. When the one-way bearing 263 rotates clockwise, it slips and does not transmit power. Therefore, when the first motor 251 drives the first rubber roller gear 253 to perform the tube unwinding action, the first take-up gear 261 does not move, avoiding tube unwinding that could cause the ribbon to unwind and ensuring that the ribbon remains taut.

[0035] Similarly, the second printing mechanism includes a second tube feeding mechanism 35 and a second ribbon recovery mechanism 36. The second tube feeding mechanism 35 includes a second motor 351 and a second drive gear set 352 driven by it, as well as a second rubber roller gear 353 meshing with the second drive gear set 352. The second rubber roller gear 353 cooperates with the second printing unit 33 and, under the action of the second motor 351, moves the tube forward or backward by friction. The second ribbon recovery mechanism 36 includes a second take-up gear 361 and a second take-up damping gear 362. The second take-up damping gear 362 meshes with the second drive gear set 352 for transmitting constant torque and providing slippage protection under heavy load. The second take-up gear 361 uses a one-way bearing 363. The second take-up gear 361 cooperates with the front printing ribbon cartridge, receiving power from the second motor 351, the second drive gear set 352, and the second take-up damping gear 362. It rotates counter-clockwise in one direction to achieve the take-up action after the ribbon is printed. At this time, the second motor 351 drives the second rubber roller gear 353 to perform the tube feeding action. When the one-way bearing 363 rotates clockwise, it slips and does not transmit power. Therefore, when the second motor 351 drives the second rubber roller gear 353 to perform the tube unwinding action, the second take-up gear 361 does not operate, thus preventing the ribbon from unwinding and ensuring that the ribbon remains taut.

[0036] In this embodiment, the auxiliary tube feeding roller mechanism includes an auxiliary tube feeding rubber roller 41 and an auxiliary roller 42. The auxiliary tube feeding rubber roller 41 is a rubber roller gear in the second drive gear set 352, which is driven by the second motor 351. It cooperates with the auxiliary roller 42 to drive the sleeve through friction to realize the tube feeding and retraction actions, so as to better meet the needs of the sleeve to travel smoothly in the tube passage of the first printing mechanism and the second printing mechanism.

[0037] The casing inlet positioning and clamping mechanism described in this embodiment is used to achieve the positioning and clamping of the casing inlet, thereby satisfying the positioning of the casing in the pipe passage. It should be noted that this casing inlet positioning and clamping mechanism can be implemented using any existing structure, and no specific limitation is made here.

[0038] In a more preferred embodiment, an adjustable pressure tube mechanism 6 is provided on the tube passage of the first printing mechanism and the second printing mechanism to press down the sleeves of different diameters and prevent the sleeves from moving up and down, which would affect the printing effect.

[0039] See attached document Figure 3 and Figure 4 As shown, the adjustable pressure tube mechanism 6 includes a fixed frame 61, a sliding adjustment plate 62, and an adjustment power mechanism 63.

[0040] The fixing frame 61 includes a fixed base plate 611 and two fixed shafts 612 vertically arranged on its upper part. The two fixed shafts 612 are arranged in parallel and both adopt a smooth shaft structure. The sliding adjustment plate 62 includes an adjustment base plate 621 and an adjustment top plate 622. The adjustment base plate 621 and the adjustment top plate 622 are partially connected. In actual operation, one side of the adjustment plate can be horizontally opened and the upper top plate can be vertically separated to form an adjustment base plate 621 and adjustment top plate 622 structure that are only partially connected. Furthermore, the adjustment base plate 621 and the adjustment top plate 622 are each provided with two adjustment holes 6211 and 6221 for the fixed shafts 612 to pass through. The first adjustment hole 6211 on the adjustment base plate 621 and the second adjustment hole 6221 on the adjustment top plate 622 are concentrically arranged when static. The adjustment holes are clearance-fitted with the fixed shafts 612. In this way, the sliding adjustment plate 62 can slide up and down on the fixed shafts 612, which is convenient for insertion and removal. The adjusting power mechanism 63 is connected to the sliding adjusting plate 62 and drives the adjusting top plate 622 to move horizontally relative to the adjusting bottom plate 621, so that the second adjusting hole 6221 on the adjusting top plate 622 is not concentric with the first adjusting hole 6211 on the adjusting bottom plate 621. The vertically misaligned adjusting holes can be tightly clamped with the fixed shaft 612, thereby fixing the height of the sliding adjusting plate 62 on the fixed shaft 612.

[0041] More specifically, in this embodiment, the adjusting power mechanism 63 uses a screw with a tapered surface 632 at the root of the screw 631. The adjusting base plate 621 and the adjusting top plate 622 are respectively provided with a third adjusting hole 6212 and a fourth adjusting hole 6222 for the screw to pass through simultaneously. The third adjusting hole 6212 is an internally threaded hole that mates with the screw's thread, and the fourth adjusting hole 6222 is a non-threaded through hole that is not concentric with the third adjusting hole 6212. The screw is inserted from the side of the fourth adjusting hole 6222 and continuously screws into the third adjusting hole 6212. During the tightening process, the conical surface 632 of the screw interacts with the fourth adjusting hole 6222, causing the third adjusting hole 6212 and the fourth adjusting hole 6222 to be concentric. This enables the adjusting top plate 622 to move horizontally relative to the adjusting bottom plate 621, thereby causing the second adjusting hole 6221 on the adjusting top plate 622 to be non-concentric with the first adjusting hole 6211 on the adjusting bottom plate 621. The vertically misaligned adjusting holes form a clamping action with the fixed shaft 612, achieving a fixed height of the sliding adjusting plate 62 on the fixed shaft 612.

[0042] The screw is equipped with a manual tightening mechanism 633 at its top, which allows for convenient and quick installation, fixing, and removal of the sliding adjustment plate 62. The sliding adjustment plate 62 also includes an extension section 623 to press down on sleeves of different diameters, preventing the sleeves from tilting and ensuring smooth pipe movement.

[0043] To achieve better fixation, the first adjustment hole 6211 and the second adjustment hole 6221 are provided at a position close to the partial connection between the adjustment base plate 621 and the adjustment top plate 622, and the third adjustment hole 6212 and the fourth adjustment hole 6222 are provided at a position away from the partial connection between the adjustment base plate 621 and the adjustment top plate 622.

[0044] Of course, the adjusting power mechanism 63 described in this embodiment can also adopt a cam rocker arm structure, using the rotation of the cam rocker arm to realize the horizontal movement of the adjusting top plate 622 relative to the adjusting bottom plate 621, thereby realizing the fixation of the sliding adjusting plate 62 on the fixed shaft 612.

[0045] When using the adjustable pressure tube mechanism 6, first fix the fixing frame 61 onto the core plate 10, install the sleeve, and then insert the sliding adjusting plate 62 onto the fixing shaft 612 so that its extension section 623 just presses against the sleeve. Then, turn the hand-tightening screw clockwise. During the tightening process, the conical surface 632 on the screw interacts with the fourth adjusting hole 6222, causing the fourth adjusting hole 6222 and the third adjusting hole 6212 to become concentric, while the second adjusting hole 6221 and the first adjusting hole 6211 become non-concentric. This results in the relative misalignment of the adjusting top plate 622 and the adjusting bottom plate 621, causing the sliding adjusting plate 62 to clamp and lock onto the fixing shaft 612, thus fixing the sliding adjusting plate 62 in this position and pressing the sleeve. To replace different sleeves, turn the hand-tightening screw counterclockwise to eliminate the misalignment between the adjusting top plate 622 and the adjusting bottom plate 621, allowing the sliding adjusting plate 62 to be moved freely or removed. The operation is simple, flexible, and convenient.

[0046] This invention, a double-sided number printer, automatically achieves printing on both sides of the sleeve in a single insertion by setting two printing mechanisms on opposite sides. Furthermore, by linking the first printing arm and the anvil assembly under the drive of the full / half-cutting power mechanism, it ensures automatic half-cutting during printing and automatic full-cutting after printing. The adjustable pressure tube mechanism prevents the sleeve from shifting vertically during its journey, ensuring printing accuracy on both sides. It enables batch, precise double-sided printing, is easy to operate, saves time and effort, minimizes waste, and has low cost, significantly improving printing efficiency and quality.

[0047] In this invention, the two printing mechanisms of the double-sided number printer are controlled by two motors, which makes the operation flexible and convenient, and can also achieve the technical effect of mutual cooperation and compensation.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, or alterations made by those skilled in the art using the disclosed technical content shall fall within the protection scope of the present invention.

Claims

1. A double-sided numbering printer, characterized by, It includes a core board and a first printing mechanism and an automatic full / half cutting mechanism disposed thereon, wherein the automatic full / half cutting mechanism is disposed at the sleeve output end of the first printing mechanism; The automatic full and half cutting mechanism includes a cutting blade assembly, an anvil assembly that cooperates with the cutting blade assembly, and a full and half cutting power mechanism that drives the anvil assembly to switch between half cutting and full cutting positions. The first printing mechanism includes a first printing swing arm, which adopts a Z-shaped rod structure. One end of the Z-shaped rod structure is rotatably connected to the core plate via a rotating shaft, and a first printing unit is connected to its middle position. The other end is movably disposed on the core plate and connected to the full and half cutting power mechanism. The first printing swing arm and the anvil assembly are linked together under the drive of the full and half cutting power mechanism. When the first printing swing arm is in the released position, the anvil assembly is in the full cutting position. When the first printing swing arm is in the pressed position, the anvil assembly is in the half cutting position. The full and half-cut power mechanism includes a power gear set, a full and half-cut cam, and a tension spring set. The power gear set includes a motor and a transmission gear set meshing with it. The full and half-cut cam drives the first printing swing arm to a released state under the action of the transmission gear set. The tension spring assembly includes a first tension spring, a second tension spring, and a third tension spring. One end of the first tension spring is connected to the movable end of the first printing arm, and the other end is connected to the first bracket on the core plate. The first tension spring is used to cause the first printing arm to return to the pressed state and provide printing pressing force. One end of the second tension spring is connected to the movable end of the first printing arm, and the other end is connected to the anvil assembly. One end of the third tension spring is connected to the second bracket on the core plate, and the other end is connected to the anvil assembly. The second and third tension springs provide opposing forces to the anvil assembly. When the first printing arm is in the released state, the second tension spring tightens the anvil assembly, making it in the full-cut position. When the first printing arm is in the pressed position, the third tension spring tightens the anvil assembly, making it in the half-cut position. It also includes a second printing mechanism disposed on the opposite side of the first printing mechanism, wherein the sleeve output end of the second printing mechanism is connected to the sleeve input end of the first printing mechanism, and the second printing mechanism and the first printing mechanism are respectively used to print the front and back sides of the same sleeve; The second printing mechanism includes a second printing swing arm, which adopts an L-shaped rod structure. The bent part of the L-shaped rod structure is rotatably connected to the core plate through a rotating shaft. The first end of the rod is connected to a second printing unit, and the second end is movably disposed on the core plate. The second end swings under the interaction of the cam tooth and the fourth tension spring, thereby driving the second printing unit at the first end to be in a loose or tight state. An adjustable pressure tube mechanism is provided on the tube passage of the first and second printing mechanisms. The adjustable pressure tube mechanism includes a fixed frame, a sliding adjustment plate, and an adjustment power mechanism. The fixed frame includes a fixed base plate and two fixed shafts vertically arranged on its upper part. The fixed base plate is fixed on the core plate. The sliding adjustment plate includes an adjustment base plate and an adjustment top plate. The adjustment base plate and the adjustment top plate are partially connected. Each of the adjustment base plate and the adjustment top plate is provided with two adjustment holes for the fixed shafts to pass through. The first adjustment hole on the adjustment base plate and the second adjustment hole on the adjustment top plate are concentric when static. The adjustment power mechanism is connected to the sliding adjustment plate and drives the adjustment top plate to move horizontally relative to the adjustment base plate, so that the second adjustment hole on the adjustment top plate is not concentric with the first adjustment hole on the adjustment base plate. The vertically misaligned adjustment holes are clamped with the fixed shafts, so as to fix the height of the sliding adjustment plate on the fixed shafts, thereby pressing down the sleeve in the tube passage and preventing it from moving up and down. The adjusting power mechanism uses a screw with a tapered surface at the root. The adjusting base plate and adjusting top plate are respectively provided with a third adjusting hole and a fourth adjusting hole for the screw to pass through simultaneously. The third adjusting hole is an internally threaded hole that engages with the screw's thread, and the fourth adjusting hole is a non-threaded through hole that is not concentric with the third adjusting hole. The screw is inserted from the side of the fourth adjusting hole. During the continuous tightening process with the third adjusting hole, the tapered surface of the screw interacts with the fourth adjusting hole, causing the third adjusting hole and the fourth adjusting hole to be concentric, thereby realizing the horizontal movement of the adjusting top plate relative to the adjusting base plate.

2. The double-sided numbering press according to claim 1, characterized in that, The first printing mechanism includes a first tube feeding mechanism and a first ribbon recycling mechanism, which are driven by a first motor. The second printing mechanism includes a second tube feeding mechanism and a second ribbon recycling mechanism, which are driven by a second motor.

3. The double-sided numbering press according to claim 2, characterized in that, The second printing mechanism is also equipped with an auxiliary tube feeding roller mechanism and a tube inlet positioning and clamping mechanism at the tube input end.

4. The double-sided header printer according to claim 1, characterized in that, The first and second adjustment holes are located near the partial connection between the adjustment base plate and the adjustment top plate, while the third and fourth adjustment holes are located away from the partial connection between the adjustment base plate and the adjustment top plate.

5. The double-sided header printer according to claim 1, characterized in that, The adjusting power mechanism adopts a cam rocker arm structure.

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