A printing machine for printing on a roll of heat-sensitive adhesive labels, comprising a printing unit, a roll of labels, a motorized roller for feeding the labels, a motorized roller for printing, a motorized roller for separating the labels, a motorized

Abstract

The present application relates to the technical field of printing machine, especially to a roll hot-sensitive adhesive label printing machine with automatic disengagement of parking ink roller and its using method, which comprises a winding roller and a printing assembly, the bottom end of the winding roller is fixedly connected with the printing assembly through bolts, the inner side of the printing assembly is fixedly connected with a drying assembly, the inner side of the printing assembly is installed with a ink cleaning assembly, the inner side of the printing assembly is rotatably connected with a ink removing assembly, one side of the printing assembly is fixedly connected with a tensioning assembly, the inner side of the printing assembly is fixedly connected with a separating assembly, the printing assembly comprises a shell frame, the right side of the shell frame is fixedly connected with a water tank, the right side of the shell frame is fixedly connected with a water pump, the inner side of the shell frame is fixedly connected with a waterproof plate, the inner side of the rear end of the waterproof plate is provided with an outlet, the inner side of the lower end of the shell frame is fixedly connected with an inner groove support block, in the present application, the device not only cleans the ink roller, but also prevents ink from drying through the polyvinyl alcohol water absorption layer, ensuring the printing performance of the ink roller and the quality of re-printing.

Description

Technical Field

[0001] This invention relates to the field of printing press technology, specifically to a roll-to-roll thermal self-adhesive label printing press with automatic ink roller disengagement upon shutdown and its usage method. Background Technology

[0002] The roll-to-roll thermal self-adhesive label printing machine with automatic ink roller detachment upon shutdown is an advanced printing equipment mainly used for printing roll-to-roll thermal self-adhesive labels. When the machine stops, it can automatically detach the ink roller from the printing plate to prevent ink from drying and contaminating, thereby improving printing quality and efficiency, and reducing maintenance costs and operational complexity. A label printing machine is a device specifically designed for printing labels. It can transfer information such as images and text onto labels made of various materials (such as paper and film) through printing processes. It is widely used in product identification, logistics management, anti-counterfeiting and other fields. During periods when the printing press is not in use, the ink may dry and harden on the surface of the ink rollers, forming a hard skin or deposits. This reduces the printing performance of the ink rollers and consequently affects the printing effect and work efficiency when the machine is restarted. Therefore, this paper proposes a roll-to-roll thermal self-adhesive label printing press with automatic ink roller disengagement during shutdown and its usage method to address the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown and its usage method, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown and its usage method, comprising a take-up roller and a printing assembly, wherein the bottom end of the take-up roller is fixedly connected to the printing assembly by bolts, a drying assembly is fixedly connected to the inner side of the printing assembly, an ink cleaning assembly is installed inside the printing assembly, an ink removal assembly is rotatably connected to the inner side of the printing assembly, a tensioning assembly is fixedly connected to one side of the printing assembly, and a separation assembly is fixedly connected to the inner side of the printing assembly. The printing assembly includes a housing frame, a water tank is fixedly connected to the right side of the housing frame, a water pump is fixedly connected to the right side of the housing frame, a waterproof plate is fixedly connected to the inner side of the rear end of the waterproof plate, an outlet is opened on the inner side of the rear end of the waterproof plate, an inner groove support block is fixedly connected to the inner side of the lower end of the housing frame, a printing roller is rotatably connected to one side of the inner groove support block, an auxiliary roller is rotatably connected to one side of the inner groove support block, and the ink cleaning assembly includes a second gear. An inner conveyor roller is fixedly connected to the outside of the conveyor roller, and a conveyor belt is sleeved on the outside of the conveyor roller. The inner side of the conveyor belt is in contact with the outer side of the auxiliary sleeve roller. The separation component includes a first servo motor, a threaded rod is fixedly connected to the end of the main shaft of the first servo motor, an internal threaded block is helically connected to the outside of the threaded rod, a second servo motor is fixedly connected to one side of the internal threaded block, a metal limiting housing is fixedly connected to the end of the main shaft of the second servo motor, an ink tank is fixedly connected to the top of the metal limiting housing, a rectangular limiting slider is slidably connected to the inside of the metal limiting housing, linear springs are fixedly connected to the top and bottom of the rectangular limiting slider, an ink roller body is rotatably connected to the inside of the rectangular limiting slider, the conveyor roller is rotatably connected to the inside of the outer frame, the auxiliary sleeve roller is rotatably connected to the inside of the outer frame, the outer side of the first servo motor is fixedly connected to the inner side of the upper end of the inner groove support block, and the upper end of the threaded rod is rotatably connected to the inner side of the upper end of the outer frame.

[0005] As a further optimization of the present invention, the drying assembly includes a connecting support column, a blower box is fixedly connected to the outside of the connecting support column, a hot air outlet is opened on the inside of the blower box, and a hot air blower is fixedly connected to the front end of the blower box.

[0006] As a further optimization of the present invention, the hot air outlet passes through the rear end of the blower box, the front end of the blower box is provided with a seal on the inner side near the hot air blower, the outer side of the connecting support is fixedly connected to the inner side of the outer frame, and the blower box and the conveyor belt are on the same horizontal plane.

[0007] As a further optimization of the present invention, the ink removal component includes a stepper motor, an inner hollow roller is fixedly connected to the end of the stepper motor spindle, a water inlet channel is opened on the inner side of the inner hollow roller, a humidification port is opened on the inner side of the inner hollow roller, a cotton strip is fixedly connected to the outer side of the inner hollow roller, and a first gear is fixedly connected to the outer side of the right end of the inner hollow roller.

[0008] As a further optimization of the present invention, wherein: one side of the stepper motor is fixedly connected to the left side of the outer casing frame, the main shaft of the stepper motor rotates inside the left end of the outer casing frame, the inner hollow roller is shaped as a hollow cylinder, the water inlet channel passes through the interior of the inner hollow roller, the outer side of the first gear meshes with the outer side of the second gear, and the inner hollow roller and the conveyor belt are on the same horizontal plane.

[0009] As a further optimization of the present invention, the tensioning assembly includes a passive rotating cylinder, a spring groove and a triangular slot on the inner side of the passive rotating cylinder, a fixed column arm rotatably connected to the inner side of the passive rotating cylinder, a spring fixedly connected to the outer side of the fixed column arm, and a triangular block fixedly connected to the outer side of the spring.

[0010] As a further optimization of the present invention, the passive rotating cylinder is composed of three hollow cylinders. A bracket is installed on the side of the outer shell frame near the fixed column arm. The fixed column arm is fixedly connected to the bracket on the outer shell frame by bolts. The passive rotating cylinder is sleeved on the outside of the fixed column arm. The outside of the triangular block fits against the inside of the triangular slot opened in the passive rotating cylinder. The triangular block is triangular in shape. The triangular slot is triangular in shape. The spring is installed inside the spring groove opened in the passive rotating cylinder. A limit ring is fixedly connected to the outside of the fixed column arm.

[0011] As a further optimization of the present invention, the following features are provided: the inner side of the outer frame is hollow; the water tank is connected to the water pump inlet via a water pipe; a water inlet is provided on the inner side of the outer frame near the water pump; the water pump outlet is connected to the inner side of the hollow inner roller via the outer frame; the inner side of the outer frame is fitted to the outer side of the hollow inner roller via a sealing ring; the water inlet channel is connected to the humidification port; there are several humidification ports; a distance of one millimeter is provided between the top of the front end of the waterproof plate and the bottom end of the conveyor belt; the inner side of the upper end of the waterproof plate is through-hole; and the waterproof plate and the water pump are on the same vertical plane.

[0012] As a further optimization of the present invention, the following features are provided: a threaded hole is provided through the inner side of the internal threaded block; a limiting groove is provided on the inner side of the rectangular limiting slider; the rectangular limiting slider is installed on the outer side of the left end and the outer side of the right end of the ink roller body; the number of internal threaded blocks corresponds one-to-one with the number of rectangular limiting sliders; a straight hole is provided on the inner side of the left-end internal threaded block; a limiting slide rod is slidably connected to the inner side of the left-end internal threaded block; and the limiting slide rod inside the left-end internal threaded block is fixed to the inner side of the upper end of the outer frame and the top of the inner groove support block.

[0013] A method for using a roll-to-roll thermal self-adhesive label printing machine that automatically detaches the ink roller upon shutdown. S1: This mechanism automatically separates the ink roller body from the printing roller and removes ink from the ink roller body to prevent it from hardening or accumulating. During periods when the printing press is not in use, the first servo motor drives a threaded rod to rotate. The upper end of the threaded rod is rotatably connected to the inner side of the upper part of the outer casing. The rotation of the threaded rod drives the inner threaded block, which is helically connected to the outside, to move. The inner threaded block, via the second servo motor, drives the metal limiting housing, ink tank, linear spring, rectangular limiting slider, and ink roller body to move simultaneously. The inner threaded block at the left end is slidably connected to the inner slide rod. When the ink roller body moves 10 centimeters, it moves away from the printing roller. The second servo motor then drives the metal limiting housing to rotate 180 degrees. The metal limiting housing drives the ink tank and ink roller body to rotate 180 degrees around the main shaft of the second servo motor. At this point, the ink tank faces down and the ink roller body faces up. When the upper end of the ink roller body is in contact with the bottom end of the conveyor belt, the ink... The roller body moves the rotatably connected rectangular limiting slider, which compresses the linear spring. Under the elastic force of the linear spring, it supports the rectangular limiting slider and the ink roller body. At the same time, the elastic force of the linear spring ensures that the ink roller body is tightly attached to the bottom of the conveyor belt. At this time, the first servo motor stops and the stepper motor starts. The stepper motor drives the inner hollow roller to rotate, which drives the first gear to rotate. The inner hollow roller is rotatably connected to the inner side of the outer frame to improve the stability of the inner hollow roller during rotation. The rotation of the first gear drives the outer meshing second gear to rotate, which drives the conveyor roller to rotate. The conveyor roller is rotatably connected to the inner side of the outer frame. The conveyor roller drives the conveyor belt to rotate, which drives the auxiliary sleeve roller attached to the inner side to rotate. A polyvinyl alcohol absorbent layer is fixed on the outer side of the conveyor belt, which can absorb the ink on the outer side of the ink roller body when the conveyor belt rotates. S2: When cleaning the ink on the outside of the conveyor belt, the water pump draws water from the water tank. The water enters the outer frame from the water pump. The inner side of the outer frame is sealed to the outer side of the inner hollow roller. The water enters the water inlet channel from the outer frame and then enters the humidification port. It is then sprayed onto the cotton strip. At this time, the cotton strip is wet. Following the same principle, the stepper motor is started, which drives the inner hollow roller to rotate. The rotation of the inner hollow roller drives the cotton strip fixedly connected to the outside to rotate. Under the action of centrifugal force, the cotton strip comes into contact with the outside of the conveyor belt. The cleaned water falls into the inside of the waterproof plate and flows out from the outlet. At the same time, the hot air blower is started. The hot air blows out into the hot air outlet slot of the blower box and blows out to the outside of the conveyor belt from the rear end of the hot air outlet slot. S3: When printing thermal self-adhesive labels on the outside of the take-up roller and the passive rotating drum, to prevent the thermal self-adhesive labels from skewing and resulting in low print quality, an external drive device drives the take-up roller to rotate. The take-up roller winds up the thermal self-adhesive label, which is then placed on the outside of the passive rotating drum. Under the tension of the thermal self-adhesive label, the passive rotating drum rotates, and the thermal self-adhesive label passes between the printing roller and the auxiliary roller. The ink roller applies ink to the printing roller, and the printing roller prints the thermal self-adhesive label. The inside of the passive rotating drum is rotatably connected to the outside of the fixed column arm. As the passive rotating drum rotates, the triangular locking blocks continuously slide out of the triangular locking slots and then fit into other triangular locking slots. During this process, the spring continuously stores elastic force. Under the torque of the spring, it can ensure that the passive rotating drum has a certain torque when rotating, thereby controlling the thermal self-adhesive label to always remain taut.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the device, through the configuration of a first servo motor, a threaded rod, an ink roller body, a printing roller, and a rectangular limiting slider, controls the first servo motor to start via a controller. The first servo motor drives the threaded rod to rotate, achieving automatic separation of the ink roller body from the printing roller. This prevents ink from drying and forming a hard crust or deposits on the ink roller surface. This automatic separation mechanism reduces manual intervention, improves operational convenience, and enhances the automation level of the machine. The second servo motor drives the metal limiting slider to rotate 180 degrees, so that the ink tank faces downwards and the ink roller body faces upwards. The ink roller body continues to move upwards and comes into contact with the bottom of the conveyor belt. The rectangular limiting slider compresses the linear spring, using the spring force to ensure a tight fit between the ink roller body and the bottom of the conveyor belt. The stepper motor is then activated to drive the inner hollow roller to rotate. The inner hollow roller drives the first gear to rotate, and the polyvinyl alcohol absorbent layer on the outside of the conveyor belt absorbs the ink on the outside of the ink roller body, cleaning it. This step not only cleans the ink roller but also prevents ink from drying through the polyvinyl alcohol absorbent layer, ensuring the printing performance of the ink roller and the quality of subsequent printing. 2. In this invention, the device utilizes a water pump, outer frame, water inlet channel, humidification port, and hot air blower. The water pump draws water from the water tank, which then enters the outer frame and the humidification port, spraying onto the cotton swabs to moisten them. A stepper motor drives the inner hollow roller to rotate, causing the cotton swabs to contact the outer side of the conveyor belt under centrifugal force, cleaning the ink from the outside of the conveyor belt. This step, through water wetting and centrifugal force, effectively cleans the ink from the outside of the ink roller, keeping it clean. The hot air blower then blows hot air into the hot air outlet of the blower box, blowing from the rear end of the outlet towards the outside of the conveyor belt, quickly drying the polyvinyl alcohol absorbent layer on the outside of the conveyor belt. This drying step ensures that the ink roller can quickly return to a dry state after cleaning, reducing ink re-contamination or drying caused by moisture. 3. In this invention, a passive rotating drum, a fixed column arm, a triangular locking block, and a spring groove are configured. An external drive device drives a take-up roller to rotate, which in turn winds up the thermal self-adhesive label. The thermal self-adhesive label is fitted onto the outside of the passive rotating drum, and the inside of the passive rotating drum is rotatably connected to the outside of the fixed column arm. The triangular locking block continuously slides out of the triangular locking groove and fits into other triangular locking grooves. The spring generates elastic force to ensure that the passive rotating drum has a certain torque when rotating. This control mechanism ensures that the thermal self-adhesive label remains taut during the printing process, preventing the label from skewing, thereby improving the printing quality and accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the printing component structure of the present invention; Figure 3 This is a schematic diagram of the ink-cleaning component structure of the present invention; Figure 4 This is a schematic diagram of the drying component structure of the present invention; Figure 5 This is a schematic diagram of the ink removal component structure of the present invention; Figure 6 This is a schematic diagram of the structure of the separate component of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the structure at point A; Figure 8 This is a schematic diagram of the tensioning component structure of the present invention.

[0016] In the diagram: 1. Take-up roller; 2. Printing assembly; 21. Outer frame; 22. Water tank; 23. Water pump; 24. Waterproof membrane; 25. Outlet; 26. Inner groove support block; 27. Printing roller; 28. Auxiliary roller; 3. Drying assembly; 31. Connecting support column; 32. Air box; 33. Hot air outlet; 34. Hot air blower; 4. Ink cleaning assembly; 41. Second gear; 42. Conveyor roller; 43. Conveyor belt; 44. Auxiliary sleeve roller; 5. Ink removal assembly; 51. Stepper motor; 52. Hollow inner roller; 53. Water inlet channel; 54. Humidification port; 55. Cotton swab; 56. First gear; 6. Tensioning assembly; 61. Passive rotating drum; 62. Spring groove; 63. Triangular retaining groove; 64. Fixed column arm; 65. Clockwork spring; 66. Triangular retaining block; 7. Separation assembly; 71. First servo motor; 72. Threaded rod; 73. Internal threaded block; 74. Second servo motor; 75. Metal limiting slide housing; 76. Ink tank; 77. Linear spring; 78. Rectangular limiting slide block; 79. Ink roller body. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Please see Figure 1-8 The present invention provides a technical solution: A roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown and its usage method, comprising a take-up roller 1 and a printing assembly 2. The bottom end of the take-up roller 1 is fixedly connected to the printing assembly 2 by bolts. A drying assembly 3 is fixedly connected to the inside of the printing assembly 2. An ink cleaning assembly 4 is installed inside the printing assembly 2. An ink removal assembly 5 is rotatably connected to the inside of the printing assembly 2. A tensioning assembly 6 is fixedly connected to one side of the printing assembly 2. A separation assembly 7 is fixedly connected to the inside of the printing assembly 2. The printing assembly 2 includes an outer frame 21. A water tank 22 is fixedly connected to the right side of the outer frame 21. A water pump 23 is fixedly connected to the right side of the outer frame 21. A waterproof plate 24 is fixedly connected to the inside of the outer frame 21. An outlet 25 is opened on the inner side of the rear end of the waterproof plate 24. An inner groove support block 26 is fixedly connected to the inner side of the lower end of the outer frame 21. A printing roller 27 is rotatably connected to one side of the inner groove support block 26. An auxiliary roller 28 is rotatably connected to one side of the inner groove support block 26. The ink cleaning assembly 4 includes a second gear 41. The second gear 41 is fixedly connected to the inner side of the outer frame 21. There is a conveyor roller 42, and a conveyor belt 43 is sleeved on the outside of the conveyor roller 42. The inner side of the conveyor belt 43 is in contact with the outer side of the auxiliary sleeve roller 44. The separation component 7 includes a first servo motor 71. A threaded rod 72 is fixedly connected to the end of the main shaft of the first servo motor 71. An internal threaded block 73 is helically connected to the outside of the threaded rod 72. A second servo motor 74 is fixedly connected to one side of the internal threaded block 73. A metal limiting slip shell 75 is fixedly connected to the end of the main shaft of the second servo motor 74. A metal limiting slip shell 75 is fixedly connected to the top of the metal limiting slip shell 75. The ink tank 76 has a rectangular sliding block 78 slidably connected to the inside of the metal sliding shell 75. The top and bottom ends of the rectangular sliding block 78 are fixedly connected to linear springs 77. The ink roller body 79 is rotatably connected to the inside of the rectangular sliding block 78. The conveyor roller 42 is rotatably connected to the inside of the outer frame 21. The auxiliary sleeve roller 44 is rotatably connected to the inside of the outer frame 21. The outer side of the first servo motor 71 is fixedly connected to the inner side of the upper end of the inner groove support block 26. The upper end of the threaded rod 72 is rotatably connected to the inner side of the upper end of the outer frame 21.

[0020] As a further implementation of this solution, the drying component 3 includes a connecting support column 31, a blower box 32 fixedly connected to the outside of the connecting support column 31, a hot air outlet 33 opened on the inside of the blower box 32, and a hot air blower 34 fixedly connected to the front end of the blower box 32 to ensure that the hot air can be blown evenly to the outside of the conveyor belt 43, improve drying efficiency, prevent hot air leakage, improve hot air utilization, and ensure that the hot air can directly act on the surface of the conveyor belt 43 to improve the drying effect. As a further implementation of this solution, the hot air outlet 33 passes through the rear end of the blower box 32. A seal is provided on the inner side of the front end of the blower box 32 near the hot air blower 34. The outer side of the connecting support column 31 is fixedly connected to the inner side of the outer frame 21. The blower box 32 and the conveyor belt 43 are on the same horizontal plane. The ink removal assembly 5 includes a stepper motor 51. An inner hollow roller 52 is fixedly connected to the end of the main shaft of the stepper motor 51. A water inlet channel 53 is provided on the inner side of the inner hollow roller 52. A humidification port 54 is provided on the inner side of the inner hollow roller 52. A cotton strip 55 is fixedly connected to the outer side of the inner hollow roller 52. A second... A gear 56 is fixedly connected to the left side of the outer casing 21 on one side of the stepper motor 51. The main shaft of the stepper motor 51 rotates inside the left end of the outer casing 21. The hollow cylindrical roller 52 is hollow. The water inlet channel 53 passes through the inside of the hollow cylindrical roller 52. The outer side of the first gear 56 meshes with the outer side of the second gear 41. The hollow cylindrical roller 52 and the conveyor belt 43 are on the same horizontal plane to ensure the stability and transmission efficiency of the motor rotation. The water can smoothly enter and spray onto the cotton strip 55 to wet the cotton strip 55. The cotton strip 55 is fixedly connected to the outer side of the hollow cylindrical roller 52 to ensure the stability and efficiency of the transmission. As a further implementation of this solution, the tensioning assembly 6 includes a passive rotating cylinder 61. A spring groove 62 and a triangular locking groove 63 are formed on the inner side of the passive rotating cylinder 61. A fixed column arm 64 is rotatably connected to the inner side of the passive rotating cylinder 61. A spring spring 65 is fixedly connected to the outer side of the fixed column arm 64. A triangular locking block 66 is fixedly connected to the outer side of the spring spring 65. The passive rotating cylinder 61 is composed of three hollow cylinders. A bracket is installed on the outer frame 21 near the fixed column arm 64. The fixed column arm 64 and the bracket on the outer frame 21 are fixedly connected by bolts. The passive rotating cylinder 61 is sleeved on the outer side of the fixed column arm 64. The outer side of the triangular locking block 66 is connected to the triangular locking groove formed in the passive rotating cylinder 61. The triangular block 66 is triangular in shape, and the triangular slot 63 is triangular in shape. The spring spring 65 is installed inside the spring slot 62 of the passive rotating cylinder 61. The outer side of the fixed column arm 64 is fixedly connected to the limit ring. The inner side of the passive rotating cylinder 61 has the spring slot 62 and the triangular slot 63, so that the spring spring 65 and the triangular block 66 can be stably installed and function. The outer side of the fixed column arm 64 is fixedly connected to the spring spring 65 to ensure that the passive rotating cylinder 61 has a certain torque when rotating, and maintains the tension of the thermal self-adhesive label. The outer side of the triangular block 66 fits with the inner side of the triangular slot 63 of the passive rotating cylinder 61 to ensure the stability of the block during rotation. As a further implementation of this solution, the inner side of the outer frame 21 is hollow, the water tank 22 is connected to the inlet of the water pump 23 through a water pipe, the inner side of the outer frame 21 near the water pump 23 has a water inlet, the outlet of the water pump 23 is connected to the inner side of the hollow roller 52 through the outer frame 21, the inner side of the outer frame 21 is fitted to the outer side of the hollow roller 52 through a sealing ring, the water inlet channel 53 is connected to the humidification port 54, and there are several humidification ports 54. A distance of one millimeter is set between the top of the front end of the waterproof plate 24 and the bottom end of the conveyor belt 43. The inner side of the upper end of the waterproof plate 24 is through-cut, the waterproof plate 24 and the water pump 23 are on the same vertical plane, the inner side of the outer frame 21 near the water pump 23 has a water inlet, the inner side of the outer frame 21 is fitted to the outer side of the hollow roller 52 through a sealing ring to prevent water from overflowing and ensure smooth water flow and sealing. As a further implementation of this solution, the inner threaded block 73 has a threaded hole through it, and the inner side of the rectangular limiting slider 78 has a limiting groove. The rectangular limiting slider 78 is installed on the outer left and outer right ends of the ink roller body 79. The number of inner threaded blocks 73 corresponds one-to-one with the number of rectangular limiting sliders 78. The inner side of the left-end inner threaded block 73 has a straight hole, and the inner side of the left-end inner threaded block 73 is slidably connected to a limiting slide rod. The limiting slide rod inside the left-end inner threaded block 73 is fixed to the inner upper end of the outer shell frame 21 and the top of the inner groove support block 26. The inner threaded block 73 has a threaded hole through it, and the inner side of the rectangular limiting slider 78 has a limiting groove, ensuring that the two can cooperate stably to achieve precise movement and positioning of the ink roller body 79. The number of inner threaded blocks 73 corresponds one-to-one with the number of rectangular limiting sliders 78. The inner side of the left-end inner threaded block 73 is slidably connected to a limiting slide rod, ensuring the stability and accuracy of the ink roller body 79 during movement.

[0021] Workflow: The process automatically separates the ink roller body 79 from the printing roller 27, simultaneously cleaning the ink on the ink roller body 79 to prevent it from drying and forming a hard crust or buildup. During periods when the printing press is not in use, the controller starts the first servo motor 71, which drives the threaded rod 72 to rotate. The upper end of the threaded rod 72 is rotatably connected to the inner side of the upper end of the outer casing frame 21. The rotation of the threaded rod 72 drives the outer spirally connected inner threaded block 73 to move. The inner threaded block 73, through the second servo motor 74, drives the metal limiting slide 75, ink tank 76, linear spring 77, rectangular limiting slide 78, and ink roller body 79 to move simultaneously. The left end of the inner threaded block 75... 3. It is slidably connected to the internal slide bar, which serves to limit the movement of the ink roller body 79. When the ink roller body 79 moves 10 centimeters away from the printing roller 27, the second servo motor 74 is activated. The second servo motor 74 drives the metal limiting slide shell 75 to rotate 180 degrees. The metal limiting slide shell 75 drives the ink box 76 and the ink roller body 79 to rotate 180 degrees around the main shaft of the second servo motor 74. At this time, the ink box 76 faces down and the ink roller body 79 faces up. The first servo motor 71 is activated again to make the ink roller body 79 continue to move upward. When the upper end of the ink roller body 79 is in contact with the bottom end of the conveyor belt 43, the ink roller body 79 is adjusted. The rotatably connected rectangular limiting slider 78 moves, compressing the linear spring 77. Under the elastic force of the linear spring 77, it supports the rectangular limiting slider 78 and the ink roller body 79. At the same time, the elastic force of the linear spring 77 ensures that the ink roller body 79 is tightly attached to the bottom of the conveyor belt 43. At this time, the first servo motor 71 is stopped, and the stepper motor 51 is started. The stepper motor 51 drives the inner hollow roller 52 to rotate. The inner hollow roller 52 drives the first gear 56 to rotate. The inner hollow roller 52 is rotatably connected to the inner side of the outer frame 21 to improve the stability of the inner hollow roller 52 during rotation. The rotation of the first gear 56 drives the outer meshing gear. The second gear 41 rotates, which drives the conveyor roller 42 to rotate. The conveyor roller 42 is connected to the inner side of the outer frame 21 to ensure the stability of the conveyor roller 42 when it rotates. The conveyor roller 42 drives the conveyor belt 43 to rotate, and the conveyor belt 43 drives the auxiliary sleeve roller 44 that is attached to the inner side to rotate. A polyvinyl alcohol water-absorbing layer is fixed on the outer side of the conveyor belt 43. When the conveyor belt 43 rotates, it can absorb the ink on the outer side of the ink roller body 79 and clean the ink roller body 79. This can prevent the ink on the outer side of the ink roller body 79 from drying and forming a hard skin or dirt, ensuring that the printing performance of the ink roller body 79 is not affected and improving the quality of reprinting. When cleaning the ink on the outside of the conveyor belt 43, the water pump 23 is started, pumping water from the water tank 22. The water enters the outer frame 21 from the water pump 23. The inner side of the outer frame 21 is sealed to the outer side of the inner hollow roller 52 through a sealing ring, which seals the outer frame 21 and the inner hollow roller 52 to prevent water from overflowing. The water enters the water inlet channel 53 from the outer frame 21 and then enters the humidification port 54. It is then sprayed onto the cotton swab 55, which is now wet. Following the same principle, the stepper motor 51 is started, which drives the inner hollow roller 52 to rotate. The rotation of the inner hollow roller 52 drives the outer fixed connection. The cotton swab 55 rotates, and under the action of centrifugal force, the cotton swab 55 contacts the outside of the conveyor belt 43. The cotton swab 55 achieves the effect of cleaning the ink on the outside of the conveyor belt 43. The cleaned water falls into the inside of the waterproof plate 24 and flows out from the outlet 25. The waterproof plate 24 can prevent the cleaning water from entering the lower part of the outer frame 21 and affecting other devices. At the same time, the hot air blower 34 is started. The hot air blower 34 blows hot air into the hot air outlet 33 opened in the air box 32 and blows it from the rear end of the hot air outlet 33 to the outside of the conveyor belt 43, thereby achieving the effect of quickly drying the polyvinyl alcohol water-absorbing layer on the outside of the conveyor belt 43, which facilitates the cleaning of the ink roller body 79. When printing thermal self-adhesive labels on the outside of the take-up roller 1 and the passive rotating drum 61, to prevent the thermal self-adhesive labels from becoming skewed and resulting in low print quality, an external drive device drives the take-up roller 1 to rotate. The take-up roller 1 winds up the thermal self-adhesive label, which is then placed on the outside of the passive rotating drum 61. Under the tension of the thermal self-adhesive label, the passive rotating drum 61 rotates, and the thermal self-adhesive label passes between the printing roller 27 and the auxiliary roller 28. The ink roller body 79 applies ink to the printing roller 27, and the thermal self-adhesive label is printed through the printing roller 27. The passive rotating drum 61 is rotatably connected to the outside of the fixed column arm 64, which serves to limit the rotation of the passive rotating drum 61. When the passive rotating drum 61 rotates, the triangular block 66 continuously slides out of the triangular slot 63 and fits into other triangular slots 63. During this process, the spring 65 continuously generates elastic force. Under the torque of the spring 65, it can ensure that the passive rotating drum 61 has a certain torque when rotating, thereby controlling the thermal self-adhesive label to always remain in a taut state, thus ensuring the printing quality of the thermal self-adhesive label printed by the printing roller 27.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown, comprising a take-up roller (1) and a printing assembly (2), characterized in that: The bottom end of the take-up roller (1) is fixedly connected to the printing assembly (2) by bolts. The inside of the printing assembly (2) is fixedly connected to the drying assembly (3). The inside of the printing assembly (2) is installed with the ink cleaning assembly (4). The inside of the printing assembly (2) is rotatably connected to the ink removal assembly (5). The side of the printing assembly (2) is fixedly connected to the tensioning assembly (6). The inside of the printing assembly (2) is fixedly connected to the separation assembly (7). The printing assembly (2) includes a housing frame (21), a water tank (22) is fixedly connected to the right side of the housing frame (21), a water pump (23) is fixedly connected to the right side of the housing frame (21), a waterproof plate (24) is fixedly connected to the inside of the housing frame (21), an outlet (25) is opened on the inner side of the rear end of the waterproof plate (24), an inner groove support block (26) is fixedly connected to the inner side of the lower end of the housing frame (21), a printing roller (27) is rotatably connected to one side of the inner groove support block (26), and an auxiliary roller (28) is rotatably connected to one side of the inner groove support block (26). The ink cleaning assembly (4) includes a second gear (41), a conveyor roller (42) is fixedly connected to the inner side of the second gear (41), and a conveyor belt (43) is sleeved on the outer side of the conveyor roller (42). 43) The inner side is in contact with the outer side of the auxiliary sleeve roller (44). The separation component (7) includes a first servo motor (71). A threaded rod (72) is fixedly connected to the end of the main shaft of the first servo motor (71). An internal threaded block (73) is spirally connected to the outer side of the threaded rod (72). A second servo motor (74) is fixedly connected to one side of the internal threaded block (73). A metal limiting shell (75) is fixedly connected to the end of the main shaft of the second servo motor (74). An ink tank (76) is fixedly connected to the top of the metal limiting shell (75). A rectangular limiting slider (78) is slidably connected to the inner side of the metal limiting shell (75). A linear spring (77) is fixedly connected to both the top and bottom of the rectangular limiting slider (78). An ink roller body (79) is rotatably connected to the inner side of the rectangular limiting slider (78). The conveying roller (42) is rotatably connected to the inner side of the outer casing frame (21), the auxiliary sleeve roller (44) is rotatably connected to the inner side of the outer casing frame (21), the outer side of the first servo motor (71) is fixedly connected to the inner side of the upper end of the inner groove support block (26), and the upper end of the threaded rod (72) is rotatably connected to the inner side of the upper end of the outer casing frame (21).

2. The roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown as described in claim 1, characterized in that: The drying assembly (3) includes a connecting support column (31), a blower box (32) is fixedly connected to the outside of the connecting support column (31), a hot air outlet slot (33) is opened on the inside of the blower box (32), and a hot air blower (34) is fixedly connected to the front end of the blower box (32).

3. A roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown, as described in claim 2, characterized in that: The hot air outlet (33) passes through the rear end of the blower box (32). The front end of the blower box (32) is sealed on the inner side near the hot air blower (34). The outer side of the connecting support column (31) is fixedly connected to the inner side of the outer frame (21). The blower box (32) and the conveyor belt (43) are on the same horizontal plane.

4. A roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown, as described in claim 3, characterized in that: The ink removal assembly (5) includes a stepper motor (51), with an inner hollow roller (52) fixedly connected to the end of the main shaft of the stepper motor (51). A water inlet channel (53) is opened on the inner side of the inner hollow roller (52), and a humidification port (54) is opened on the inner side of the inner hollow roller (52). A cotton strip (55) is fixedly connected to the outer side of the inner hollow roller (52), and a first gear (56) is fixedly connected to the outer side of the right end of the inner hollow roller (52).

5. A roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown, as described in claim 4, characterized in that: The stepper motor (51) is fixedly connected to the left side of the outer frame (21) on one side. The main shaft of the stepper motor (51) rotates inside the left end of the outer frame (21). The hollow roller (52) is a hollow cylinder. The water inlet channel (53) passes through the inside of the hollow roller (52). The outer side of the first gear (56) meshes with the outer side of the second gear (41). The hollow roller (52) and the conveyor belt (43) are on the same horizontal plane.

6. A roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown, as described in claim 5, characterized in that: The tensioning assembly (6) includes a passive rotating cylinder (61), a spring groove (62) is provided on the inner side of the passive rotating cylinder (61), a triangular slot (63) is provided on the inner side of the passive rotating cylinder (61), a fixed column arm (64) is rotatably connected to the inner side of the passive rotating cylinder (61), a spring spring (65) is fixedly connected to the outer side of the fixed column arm (64), and a triangular block (66) is fixedly connected to the outer side of the spring spring (65).

7. A roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown, as described in claim 6, characterized in that: The passive rotating cylinder (61) is composed of three hollow cylinders. A bracket is installed on the side of the outer frame (21) near the fixed column arm (64). The fixed column arm (64) is fixedly connected to the bracket on the outer frame (21) by bolts. The passive rotating cylinder (61) is sleeved on the outside of the fixed column arm (64). The outside of the triangular block (66) fits against the inside of the triangular slot (63) opened in the passive rotating cylinder (61). The triangular block (66) is triangular in shape. The triangular slot (63) is triangular in shape. The spring (65) is installed inside the spring groove (62) opened in the passive rotating cylinder (61). A limit ring is fixedly connected to the outside of the fixed column arm (64).

8. A roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown, as described in claim 7, characterized in that: The inner side of the outer frame (21) is hollow. The water tank (22) is connected to the inlet of the water pump (23) through a water pipe. The inner side of the outer frame (21) near the water pump (23) has a water inlet. The outlet of the water pump (23) is connected to the inner side of the hollow roller (52) through the outer frame (21). The inner side of the outer frame (21) is attached to the outer side of the hollow roller (52) through a sealing ring. The water inlet channel (53) is connected to the humidification port (54). There are several humidification ports (54). The top of the front end of the waterproof plate (24) is one millimeter away from the bottom end of the conveyor belt (43). The inner side of the upper end of the waterproof plate (24) is through-hole. The waterproof plate (24) and the water pump (23) are on the same vertical plane.

9. A roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown, as described in claim 8, characterized in that: The inner threaded block (73) has a threaded hole through it, and the inner side of the rectangular limiting slider (78) has a limiting groove. The rectangular limiting slider (78) is installed on the outer side of the left end and the outer side of the right end of the ink roller body (79). The number of the inner threaded blocks (73) corresponds one-to-one with the number of the rectangular limiting sliders (78). The inner side of the left inner threaded block (73) has a straight hole. The inner side of the left inner threaded block (73) is slidably connected to a limiting slide rod. The limiting slide rod inside the left inner threaded block (73) is fixed to the inner side of the upper end of the outer frame (21) and the top of the inner groove support block (26).

10. A method of using a roll-to-roll thermal self-adhesive label printing machine with automatic ink roller disengagement upon shutdown as described in claim 9, characterized in that: Includes the following steps, S1: To achieve automatic separation of the ink roller body (79) and the printing roller (27), and to remove ink from the ink roller body (79) to prevent it from drying and forming a hard skin or grime, during the printing press's downtime, the first servo motor (71) drives the threaded rod (72) to rotate. The upper end of the threaded rod (72) is rotatably connected to the inner side of the upper end of the outer casing frame (21). The rotation of the threaded rod (72) drives the inner threaded block (73) connected by a spiral on the outside to move. The inner threaded block (73) drives the metal limiting slide shell (75), ink tank (76), linear spring (77), and rectangular limiting slide block (78) through the second servo motor (74). The ink roller body (79) and the ink roller body (79) move simultaneously. The internal thread block (73) at the left end slides and connects with the internal slide rod. When the ink roller body (79) moves 10 centimeters, the ink roller body (79) moves away from the printing roller (27). The second servo motor (74) drives the metal limiting slip shell (75) to rotate 180 degrees. The metal limiting slip shell (75) drives the ink box (76) and the ink roller body (79) to rotate 180 degrees around the main shaft of the second servo motor (74). At this time, the ink box (76) faces down and the ink roller body (79) faces up. When the upper end of the ink roller body (79) is in contact with the bottom end of the conveyor belt (43), the ink roller body (79) moves away from the printing roller (27). 79) Move the rotatingly connected rectangular limit slider (78). The rectangular limit slider (78) squeezes the linear spring (77). Under the elastic force of the linear spring (77), it supports the rectangular limit slider (78) and the ink roller body (79). At the same time, under the elastic force of the linear spring (77), it can ensure that the ink roller body (79) is tightly attached to the bottom of the conveyor belt (43). At this time, stop the first servo motor (71) and start the stepper motor (51). The stepper motor (51) drives the hollow column roller (52) to rotate. The hollow column roller (52) drives the first gear (56) to rotate. (52) Rotatably connected to the inner side of the outer frame (21) to improve the stability of the inner hollow roller (52) when rotating. The first gear (56) rotates to drive the second gear (41) meshing on the outside to rotate. The second gear (41) drives the conveyor roller (42) to rotate. The conveyor roller (42) is rotatably connected to the inner side of the outer frame (21). The conveyor roller (42) drives the conveyor belt (43) to rotate. The conveyor belt (43) drives the auxiliary sleeve roller (44) attached to the inner side to rotate. A layer of polyvinyl alcohol water-absorbing layer is fixed on the outer side of the conveyor belt (43). When the conveyor belt (43) rotates, it can absorb the ink on the outer side of the ink roller body (79). S2: When cleaning the ink on the outside of the conveyor belt (43), the water pump (23) draws water from the inside of the water tank (22). The water enters the inside of the outer frame (21) from the water pump (23). The inside of the outer frame (21) is sealed with the outside of the inner hollow roller (52). The water enters the inside of the water inlet channel (53) from the outer frame (21) and then enters the inside of the humidification port (54). The water is sprayed onto the cotton strip (55) from the humidification port (54). At this time, the cotton strip (55) is wet. Based on the above principle, the stepper is started. The motor (51) drives the inner hollow roller (52) to rotate. The rotation of the inner hollow roller (52) drives the cotton strip (55) fixedly connected to the outside to rotate. Under the action of centrifugal force, the cotton strip (55) contacts the outside of the conveyor belt (43). The cleaned water falls into the interior of the waterproof plate (24) and flows out from the outlet (25). At the same time, the hot air blower (34) is started. The hot air blower (34) blows hot air into the hot air outlet (33) opened in the blower box (32) and blows from the rear end of the hot air outlet (33) to the outside of the conveyor belt (43). S3: When printing thermal self-adhesive labels on the outside of the take-up roller (1) and the passive rotating drum (61), to prevent the thermal self-adhesive labels from becoming skewed and resulting in low printing quality, the take-up roller (1) is driven to rotate by an external drive device. The take-up roller (1) winds up the thermal self-adhesive label, which is then placed on the outside of the passive rotating drum (61). Under the tension of the thermal self-adhesive label, the passive rotating drum (61) rotates, and the thermal self-adhesive label passes between the printing roller (27) and the auxiliary roller (28). The ink roller body (79) presses against the printing roller (27). 27) Inking: The thermal self-adhesive label is printed by the printing roller (27). The inner side of the passive rotating drum (61) is connected to the outer side of the fixed column arm (64). When the passive rotating drum (61) rotates, the triangular block (66) slides out of the triangular slot (63) and fits into other triangular slots (63). During this process, the spring (65) continuously generates elastic force. Under the torque of the spring (65), it can be ensured that the passive rotating drum (61) has a certain torque when rotating, so as to control the thermal self-adhesive label to always remain in a taut state.

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