Automatic cleaning device for one-way printer

By designing an automatic cleaning device and using components such as the transmission system and threaded rod, the automatic cleaning of the single-pass printer nozzle is realized, which solves the problems of low cleaning efficiency and poor quality in the existing technology, and improves the cleaning efficiency and the quality of printing materials.

CN119348301AInactive Publication Date: 2025-01-24SHENZHEN SUNTHINKS TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202411777219.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-01-24
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing one-way printer nozzle cleaning requires manual disassembly and installation by staff, which is inefficient and time-consuming, resulting in poor cleaning quality and low printing material quality.

Method used

Design an automatic cleaning device, including cleaning boxes, transmission components, water tanks, and pumps. The spray head moves to the position of the cleaning box through the transmission system. Use the cooperation of the thread pole and clean block to automatically spray the cleaning fluid to clean the nozzle.

Benefits of technology

It improves the efficiency of the nozzle cleaning and the quality of cleaning, reduces the time of manual operation of the staff, and avoids the problem of the nozzle block and the quality of the printing material.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119348301A_ABST
    Figure CN119348301A_ABST
Patent Text Reader

Abstract

The invention belongs to the technical field of printers, and discloses a one-way printer automatic cleaning device which comprises a printer body, a spray head is installed in the printer body, and a cleaning frame is arranged at the bottom of the spray head. A motor is started to drive a winding roller and a rotating shaft to rotate, the rotating shaft drives a first bevel gear and a first connecting rod to rotate, the first connecting rod drives a second bevel gear and a second connecting rod to rotate, and the second connecting rod drives a threaded rod to rotate, so that a rectangular block moves along positive and negative threads arranged outside the threaded rod; a water pump is started to pump out cleaning liquid in a water tank, so that the cleaning liquid is sprayed to the bottom of a spray head through a spray hole along the interior of a first connecting pipe, and the cleaning block is close to the middle of the threaded rod to clean the bottom of the spray head; in the process, the efficiency of cleaning the spray head by the cleaning assembly is improved, and meanwhile, the waste of working time caused by disassembly and cleaning of the spray head by a worker is avoided.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention belongs to the technical field of printers, in particular to a one-way printer automatic cleaning device. Background Art

[0002] A single-pass printer is an advanced device in modern printing technology. Its biggest advantage is that the printing operation can be completed in a single stroke, which significantly shortens the printing time and improves production efficiency. This type of printer usually uses advanced inkjet technology. The nozzle can accurately spray ink to the specified position in one movement to form the required pattern, text or image. In terms of design, single-pass printers often have a high-precision motion control system to ensure the stable movement and precise positioning of the nozzle, thereby ensuring the consistency and accuracy of printing quality.

[0003] The existing single-pass printer mainly includes a nozzle, an ink cartridge, an ink tank, a transmission system (including a motor, a belt, a guide rail, etc., to ensure that the nozzle can move smoothly and accurately on the printing medium), a control circuit, a printing medium delivery system, a sensor, a housing, a power module and other major components. Among them, the nozzle is one of the core components of the single-pass printer, which is responsible for accurately spraying ink droplets and determines the accuracy and quality of printing. When the single-pass printer is not used for a long time, the nozzle may be clogged. At this time, the nozzle needs to be cleaned for subsequent use. When cleaning the nozzle of a single-pass printer, the staff needs to disassemble the nozzle first, and then use a cleaning fluid to clean the nozzle. This method requires the staff to disassemble and install the nozzle back and forth, which takes a lot of time. In addition, the manual cleaning efficiency of the staff is low and the cleaning quality is poor. Therefore, an automatic cleaning device for a single-pass printer is proposed. Summary of the invention

[0004] In order to solve the problems raised in the above-mentioned background technology, the present invention provides an automatic cleaning device for a one-way printer, which solves the existing problem of cleaning the nozzle of a one-way printer by disassembling the nozzle and cleaning the nozzle with a cleaning fluid by a staff. However, this method requires disassembling and installing the nozzle back and forth, which increases the working time of the staff, and the efficiency of manual cleaning by the staff is low. At the same time, it reduces the problem of low quality of subsequent printing materials of the printer.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a one-way automatic cleaning device for a printer, comprising a printer body, a nozzle installed inside the printer body, a cleaning frame provided at the bottom of the nozzle, a drain port fixedly connected to the bottom of the cleaning frame, a transmission assembly provided at one side of the outside of the cleaning frame, a water tank provided at the other side of the outside of the cleaning frame, a water pump fixedly installed outside the water tank, a first connecting pipe fixedly connected inside the water pump, a sealing assembly provided at one end of the outside of the transmission assembly, a cleaning assembly provided inside the cleaning frame, a rectangular frame installed at the top of the cleaning frame, an air bag connected inside the rectangular frame, and a spray hole provided inside the first connecting pipe;

[0006] The sealing assembly also includes a rectangular block arranged inside the cleaning frame, a piston is installed inside the rectangular block, a round rod is installed on the top of the piston, a spring is arranged outside the round rod, a pull rope is fixedly connected to the bottom of the piston, and a second connecting pipe is installed on one side of the outside of the rectangular block;

[0007] The transmission assembly also includes a winding roller arranged at one end of the outside of the pull rope, a motor is installed at the one end of the outside of the winding roller, and a rotating shaft is fixedly connected to the other end of the outside of the winding roller. A first bevel gear is sleeved on the outside of the rotating shaft, a first connecting rod is sleeved on the inside of the first bevel gear, and a second bevel gear is sleeved on the outside of the first connecting rod.

[0008] Preferably, the cleaning assembly also includes a second connecting rod sleeved inside the second bevel gear, a threaded rod is installed on one external end of the second connecting rod, a rectangular block is sleeved on the outside of the threaded rod, a cleaning block is installed on the top of the rectangular block, and a third connecting rod is sleeved on the outside of the rectangular block.

[0009] Preferably, the outside of the threaded rod is provided with positive and negative threads, and two ends of the outside of the threaded rod are in contact with two ends of the inner wall of the cleaning frame.

[0010] Preferably, the top surface of the cleaning block contacts the bottom of the nozzle, and the outer ends of the cleaning block contact the inner wall of the cleaning frame.

[0011] Preferably, one end of the second connecting tube is connected to the interior of the airbag, and the other end of the second connecting tube is connected to the interior of the rectangular block.

[0012] Preferably, one end of the pull rope passes through the outside of the rectangular block and is installed on the bottom of the piston, and the other end of the pull rope is installed on the outside of the winding roller.

[0013] Preferably, a fixed angle ear is installed on the outside of the first connecting rod, and the fixed angle ear is installed on the outside of the cleaning frame.

[0014] Preferably, a liquid filling port is provided on the top of the water tank, and a cover plate is installed on the top of the liquid filling port.

[0015] Preferably, a round block is installed on the top of the round rod, one end of the spring is connected to the bottom of the round block, and the other end of the spring is connected to the outer top surface of the rectangular block.

[0016] Preferably, the outside of the piston contacts the inner wall of the rectangular block, and the piston vertically slides inside the rectangular block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention starts a motor to drive the winding roller and the rotating shaft to rotate, and the rotating shaft drives the first bevel gear and the first connecting rod to rotate, and the first connecting rod drives the second bevel gear and the second connecting rod to rotate, and the second connecting rod drives the threaded rod to rotate, so that the rectangular block moves along the positive and negative threads arranged on the outside of the threaded rod, and at the same time, the rectangular block drives the cleaning block to move closer to the middle part of the threaded rod, and the water pump is started to extract the cleaning liquid in the water tank, so that the cleaning liquid is sprayed through the spray hole along the inside of the first connecting pipe, and the cleaning liquid is sprayed on the bottom of the nozzle, and the cleaning block moves closer to the middle part of the threaded rod to clean the bottom of the nozzle. In this process, the first bevel gear, the second bevel gear, the first connecting rod, the second connecting rod, the threaded rod, the rectangular block and the cleaning block are used in coordination, so that the efficiency and cleaning quality of the cleaning component for cleaning the nozzle are improved, and at the same time, a lot of working time wasted by the staff manually disassembling the nozzle back and forth for cleaning is avoided;

[0019] The present invention drives the transmission system in the printer body to move the nozzle to the position of the cleaning frame, so that the bottom of the nozzle contacts the top of the cleaning frame, and starts the motor to drive the winding roller to rotate. At the same time, the winding roller drives the pull rope, and the pull rope pulls the piston and the rectangular block downward. At the same time, the rectangular block drives the round rod downward to compress the spring. The air inside the rectangular block enters the airbag along the inner wall of the second connecting tube through the downward movement of the piston, so that the air inside the airbag is filled with air. In this process, the efficiency of cleaning the nozzle is improved by the coordinated use of the winding roller, the pull rope, the piston and the second connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the combined structure of the nozzle, cleaning frame, transmission assembly, water tank, first connecting pipe and water pump of the present invention;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the cleaning frame of the present invention;

[0023] Figure 4It is a schematic diagram of the combined structure of the second connecting pipe, rectangular frame and airbag of the present invention;

[0024] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 6 It is a schematic diagram of the combined structure of the cleaning component of the present invention.

[0026] In the figure: 1. printer body; 2. nozzle; 3. cleaning frame; 4. drain outlet; 5. water tank; 6. water pump; 7. first connecting pipe; 8. transmission assembly; 801. motor; 802. winding roller; 803. rotating shaft; 804. first bevel gear; 805. first connecting rod; 806. second bevel gear; 9. sealing assembly; 901. pull rope; 902. rectangular block; 903. spring; 904. round rod; 905. second connecting pipe; 906. piston; 11. cleaning assembly; 1101. second connecting rod; 1102. threaded rod; 1103. cleaning block; 1104. rectangular block; 1105. third connecting rod; 12. rectangular frame; 13. air bag; 14. spray hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 6 As shown, the present invention provides a one-way printer automatic cleaning device, comprising a printer body 1, a nozzle 2 is installed inside the printer body 1, a cleaning frame 3 is arranged at the bottom of the nozzle 2, a drain port 4 is fixedly connected to the bottom of the cleaning frame 3, a transmission component 8 is arranged on one side of the outside of the cleaning frame 3, a water tank 5 is arranged on the other side of the outside of the cleaning frame 3, a water pump 6 is fixedly installed outside the water tank 5, a first connecting pipe 7 is fixedly connected inside the water pump 6, a sealing component 9 is installed at one end of the outside of the transmission component 8, a cleaning component 11 is arranged inside the cleaning frame 3, a rectangular frame 12 is installed on the top of the cleaning frame 3, an air bag 13 is connected inside the rectangular frame 12, and a spray hole 14 is arranged inside the first connecting pipe 7;

[0029] The sealing assembly 9 also includes a rectangular block 902 disposed inside the cleaning frame 3, a piston 906 is installed inside the rectangular block 902, a round rod 904 is installed on the top of the piston 906, a spring 903 is arranged outside the round rod 904, a pull rope 901 is fixedly connected to the bottom of the piston 906, and a second connecting pipe 905 is installed on one side of the outside of the rectangular block 902;

[0030] The transmission assembly 8 also includes a winding roller 802 arranged at one end of the outside of the pull rope 901, and a motor 801 is installed at one end of the outside of the winding roller 802. The other end of the outside of the winding roller 802 is fixedly connected to a rotating shaft 803. The outside of the rotating shaft 803 is sleeved with a first bevel gear 804, the inside of the first bevel gear 804 is sleeved with a first connecting rod 805, and the outside of the first connecting rod 805 is sleeved with a second bevel gear 806.

[0031] The above scheme is adopted: the control system on the printer body 1 drives the transmission system in the printer body 1 to move the nozzle 2 to the position of the cleaning frame 3, so that the bottom of the nozzle 2 contacts the top of the cleaning frame 3, and the motor 801 is started. The motor 801 drives the winding roller 802 to rotate. At the same time, the winding roller 802 drives the pull rope 901, so that the pull rope 901 is wound along the outside of the winding roller 802, and the pull rope 901 pulls the piston 906, so that the piston 906 moves down along the inside of the rectangular block 902. At the same time, the rectangular block 902 drives the round rod 904 to move down and compress the spring 903. The air inside the rectangular block 902 enters the airbag 13 along the inner wall of the second connecting pipe 905 through the downward movement of the piston 906, so that the air inside the airbag 13 is filled with air. At the same time, the winding roller 802 drives the rotating shaft 803 to rotate, and drives the first bevel gear 804 set on the outside to rotate through the rotating shaft 803. At the same time, the first bevel gear 804 drives the first connecting rod 805 to rotate, and the second bevel gear 806 is driven to rotate through the first connecting rod 805, and the second bevel gear 806 drives the second connecting rod 1101 to rotate, and the threaded rod 1102 is driven to rotate through the second connecting rod 1101, so that the rectangular block 1104 moves along the positive and negative threads set on the outside of the threaded rod 1102, and at the same time, the rectangular block 1104 drives the cleaning block 1103 to move closer to the middle part of the threaded rod 1102, and at the same time, the water pump 6 is started, and the cleaning liquid inside the water tank 5 is pumped out through the water pump 6, so that the cleaning liquid is sprayed out through the spray hole 14 along the inside of the first connecting pipe 7, and the cleaning liquid is sprayed on the bottom of the nozzle 2, and the cleaning block 1103 moves closer to the middle part of the threaded rod 1102 to clean the bottom of the nozzle 2. In this process, the cooperation of the water pump 6, the water tank 5, the first connecting pipe 7, the transmission assembly 8 and the cleaning assembly 11 improves the efficiency of cleaning the nozzle 2.

[0032] like Figure 2 , Figure 3 and Figure 6 As shown, the cleaning assembly 11 further includes a second connecting rod 1101 sleeved inside the second bevel gear 806, a threaded rod 1102 is installed on one end of the outside of the second connecting rod 1101, a rectangular block 1104 is sleeved on the outside of the threaded rod 1102, a cleaning block 1103 is installed on the top of the rectangular block 1104, and a third connecting rod 1105 is sleeved on the outside of the rectangular block 1104;

[0033] The outside of the threaded rod 1102 is provided with positive and negative threads, and the two ends of the outside of the threaded rod 1102 are in contact with the two ends of the inner wall of the cleaning frame 3;

[0034] The top surface of the cleaning block 1103 contacts the bottom of the nozzle 2 , and both outer ends of the cleaning block 1103 contact the inner wall of the cleaning frame 3 .

[0035] The above scheme is adopted: positive and negative threads are set on the outside of the threaded rod 1102, and when the second connecting rod 1101 rotates, the threaded rod 1102 is driven to rotate, and the rectangular block 1104 and the cleaning block 1103 are driven to move through the threaded rod 1102, so that the cleaning block 1103 is moved closer to the middle of the threaded rod 1102, and at the same time, the top surface of the cleaning block 1103 contacts the bottom of the nozzle 2, and the bottom of the nozzle 2 is cleaned by the cleaning block 1103, and the outer ends of the threaded rod 1102 contact the inner wall ends of the cleaning frame 3, which improves the efficiency of cleaning the nozzle 2 by the cleaning block 1103, and at the same time avoids a lot of working time wasted by the staff in disassembling the nozzle 2.

[0036] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, one end of the second connecting tube 905 is connected to the interior of the airbag 13, and the other end of the second connecting tube 905 is connected to the interior of the rectangular block 902;

[0037] One end of the pull rope 901 passes through the outside of the rectangular block 902 and is installed at the bottom of the piston 906, and the other end of the pull rope 901 is installed at the outside of the winding roller 802;

[0038] A round block is installed on the top of the round rod 904, one end of the spring 903 is connected to the bottom of the round block, and the other end of the spring 903 is connected to the outer top surface of the rectangular block 902;

[0039] The outside of the piston 906 contacts the inner wall of the rectangular block 902 , and the piston 906 slides vertically inside the rectangular block 902 .

[0040] The above scheme is adopted: one end of the pull rope 901 passes through the outside of the rectangular block 902 and is installed on the bottom of the piston 906, the other end of the pull rope 901 is installed on the outside of the winding roller 802, the motor 801 is started to drive the winding roller 802 to rotate, and the winding roller 802 pulls the pull rope 901 to drive the piston 906 to move, and the piston 906 moves downward and squeezes. At the same time, one end of the second connecting tube 905 is connected to the inside of the airbag 13, and the other end of the second connecting tube 905 is connected to the inside of the rectangular block 902, and the outside of the piston 906 contacts the inner wall of the rectangular block 902, and the piston 906 slides vertically inside the rectangular block 902, so that the air inside the rectangular block 902 enters the airbag 13 along the inside of the second connecting tube 905, thereby improving the sealing effect of the equipment when cleaning the nozzle 2, reducing the splashing of the cleaning liquid during the cleaning process, and improving the cleaning efficiency and cleaning quality of the nozzle 2.

[0041] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, a fixed angle ear is installed on the outside of the first connecting rod 805, and the fixed angle ear is installed on the outside of the cleaning frame 3;

[0042] A liquid filling port is arranged on the top of the water tank 5, and a cover plate is installed on the top of the liquid filling port.

[0043] The above scheme is adopted: a fixed angle ear is installed on the outside of the first connecting rod 805, which improves the overall stability of the transmission assembly 8 during operation. A liquid filling port is set on the top of the water tank 5 to facilitate the liquid filling operation inside the water tank 5. At the same time, a cover plate is installed on the top of the liquid filling port to prevent the internal liquid from splashing out.

[0044] The working principle and use process of the present invention:

[0045] First, the control system on the printer body 1 drives the transmission system in the printer body 1 to move the nozzle 2 to the position of the cleaning frame 3, so that the bottom of the nozzle 2 contacts the top of the cleaning frame 3, and the motor 801 is started. The motor 801 drives the winding roller 802 to rotate. At the same time, the winding roller 802 drives the pull rope 901 to make the pull rope 901 wrap around the outside of the winding roller 802, and the pull rope 901 pulls the piston 906 to move down along the inside of the rectangular block 902. At the same time, the rectangular block 902 drives the round rod 904 to move down to compress the spring 903. The air inside the rectangular block 902 enters the airbag 13 along the inner wall of the second connecting pipe 905 through the downward movement of the piston 906, so that the airbag 13 is filled with air. At the same time, the winding roller 802 drives the rotating shaft 803 to rotate. The first bevel gear 804 sleeved on the outside rotates, and at the same time, the first bevel gear 804 drives the first connecting rod 805 to rotate, and the second bevel gear 806 is driven to rotate through the first connecting rod 805, and the second bevel gear 806 drives the second connecting rod 1101 to rotate, and the threaded rod 1102 is driven to rotate through the second connecting rod 1101, so that the rectangular block 1104 moves along the positive and negative threads set on the outside of the threaded rod 1102, and at the same time, the rectangular block 1104 drives the cleaning block 1103 to move closer to the middle of the threaded rod 1102, and at the same time, the water pump 6 is started, and the cleaning liquid inside the water tank 5 is pumped out through the water pump 6, so that the cleaning liquid is sprayed out through the spray hole 14 along the inside of the first connecting pipe 7, and the cleaning liquid is sprayed on the bottom of the nozzle 2, and the cleaning block 1103 moves closer to the middle of the threaded rod 1102 to clean the bottom of the nozzle 2.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A one-way printer automatic cleaning device, comprising a printer body (1), characterized in that: A nozzle (2) is installed inside the printer body (1), a cleaning frame (3) is provided at the bottom of the nozzle (2), a drain port (4) is fixedly connected to the bottom of the cleaning frame (3), a transmission assembly (8) is provided on one side of the outside of the cleaning frame (3), a water tank (5) is installed on the other side of the outside of the cleaning frame (3), a water pump (6) is fixedly installed on the outside of the water tank (5), a first connecting pipe (7) is fixedly connected to the inside of the water pump (6), a sealing assembly (9) is installed at one end of the outside of the transmission assembly (8), a cleaning assembly (11) is provided inside the cleaning frame (3), a rectangular frame (12) is installed on the top of the cleaning frame (3), an air bag (13) is connected to the inside of the rectangular frame (12), and a spray hole (14) is installed inside the first connecting pipe (7); The sealing assembly (9) further comprises a rectangular block (902) arranged inside the cleaning frame (3), a piston (906) being installed inside the rectangular block (902), a round rod (904) being installed on the top of the piston (906), a spring (903) being arranged outside the round rod (904), a pull rope (901) being fixedly connected to the bottom of the piston (906), and a second connecting pipe (905) being installed on one side outside the rectangular block (902); The transmission assembly (8) also includes a winding roller (802) arranged at one end of the outside of the pull rope (901), a motor (801) is installed at one end of the outside of the winding roller (802), and the other end of the outside of the winding roller (802) is fixedly connected to a rotating shaft (803), the outside of the rotating shaft (803) is sleeved with a first bevel gear (804), the inside of the first bevel gear (804) is sleeved with a first connecting rod (805), and the outside of the first connecting rod (805) is sleeved with a second bevel gear (806).

2. The one-way printer automatic cleaning device according to claim 1, characterized in that: The cleaning assembly (11) also includes a second connecting rod (1101) sleeved inside the second bevel gear (806), a threaded rod (1102) being installed at one external end of the second connecting rod (1101), a rectangular block (1104) being sleeved on the outside of the threaded rod (1102), a cleaning block (1103) being installed on the top of the rectangular block (1104), and a third connecting rod (1105) being sleeved on the outside of the rectangular block (1104).

3. The one-way printer automatic cleaning device according to claim 2, characterized in that: The outside of the threaded rod (1102) is provided with positive and negative threads, and the two ends of the outside of the threaded rod (1102) are in contact with the two ends of the inner wall of the cleaning frame (3).

4. The one-way printer automatic cleaning device according to claim 2, characterized in that: The top surface of the cleaning block (1103) contacts the bottom of the nozzle (2), and the outer ends of the cleaning block (1103) contact the inner wall of the cleaning frame (3).

5. The one-way printer automatic cleaning device according to claim 1, characterized in that: One end of the second connecting tube (905) is connected to the interior of the airbag (13), and the other end of the second connecting tube (905) is connected to the interior of the rectangular block (902).

6. The one-way printer automatic cleaning device according to claim 1, characterized in that: One end of the pull rope (901) passes through the outside of the rectangular block (902) and is installed at the bottom of the piston (906), and the other end of the pull rope (901) is installed at the outside of the winding roller (802).

7. The one-way printer automatic cleaning device according to claim 1, characterized in that: A fixed angle ear is installed on the outside of the first connecting rod (805), and the fixed angle ear is installed on the outside of the cleaning frame (3).

8. The one-way printer automatic cleaning device according to claim 1, characterized in that: The top of the water tank (5) is provided with a liquid filling port, and a cover plate is installed at the top of the liquid filling port.

9. The one-way printer automatic cleaning device according to claim 1, characterized in that: A round block is installed on the top of the round rod (904), one end of the spring (903) is connected to the bottom of the round block, and the other end of the spring (903) is connected to the outer top surface of the rectangular block (902).

10. The one-way printer automatic cleaning device according to claim 1, characterized in that: The outside of the piston (906) contacts the inner wall of the rectangular block (902), and the piston (906) vertically slides inside the rectangular block (902).