A wide-format heat transfer digital printer

Abstract

The present application relates to a kind of wide heat transfer digital printer, it relates to the field of printer, and its adhesive paper transmission system and camera positioning type die cutting system are sequentially arranged along the direction of adhesive paper advancement, and are installed above the upper adhesive paper system of frame and tension retention, scanning type adaptive pressure printing system is installed above adhesive paper transmission system, automatic carbon ribbon cassette system is installed at the front end or rear end of scanning type adaptive pressure printing system and is used to replace carbon ribbon cassette.The beneficial effects of the present application are: the whole machine has the advantages of high integration, compact structure, simple transmission, low cost, no waste of adhesive paper and carbon ribbon and multi-color digital printing, and can adapt to roll-to-roll, roll-to-zhang operation, and can be applied to wide printing.

Description

Technical Field

[0001] This invention relates to the field of printers, and more specifically to a wide-format thermal transfer digital printer. Background Technology

[0002] Thermal transfer printers are widely used in various industries due to their advantages such as fast printing speed and long preservation time of printed products; however, multi-color printing, wide-format printing, and digital printing have always been challenging aspects of thermal transfer printing.

[0003] Currently, most thermal transfer multicolor printers on the market are narrow-format and mainly fall into three design categories: The first is a pipeline design, where each color requires a dedicated printing channel and multiple ribbons, each with its own dedicated printhead. Examples include patents CN207274116U (a multi-ribbon, multi-printhead thermal transfer printer) and CN214522815U (a thermal transfer printer). The printer sequentially prints different colors of text or images on the ticket. This design is bulky, with extremely high electronic component costs. Furthermore, the long printing channel makes it difficult to control the registration accuracy. Also, the first print run must skip all printheads, resulting in wasted adhesive tape.

[0004] The second type of thermal transfer printer uses ribbons containing multiple colors arranged sequentially along the length of the paper, such as patent CN102991140B - Thermal Transfer Printer and Printing Method with Multi-color Printing Function. This second ribbon scheme suffers from problems such as color mixing during printing, ribbon waste, and inflexible printing order changes. Furthermore, both types of printers require rotating the feeding paper during the tape return process, making long-format printing impossible.

[0005] The third type of design, corresponding to wide-format digital printing, is mostly implemented using printhead splicing. Due to technological limitations, the printing width is usually not wide, or the wide-format printer has a large structure. The printhead splicing solution often leads to accelerated printhead wear and difficult maintenance. Existing wide-format scanning structures with front and rear tension maintenance are too large and cannot correct deviations. Summary of the Invention

[0006] The technical problem to be solved by the present invention is how to provide a compact wide-format thermal transfer printer.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A wide-format thermal transfer digital printer includes a frame and tension-maintaining adhesive paper feeding system, an adhesive paper transport system, a scanning adaptive pressure printing system, an automatic ribbon cartridge changing system, and a camera-positioning die-cutting system. The adhesive paper transport system and the camera-positioning die-cutting system are arranged sequentially along the adhesive paper's forward direction and installed above the frame and tension-maintaining adhesive paper feeding system. The scanning adaptive pressure printing system is installed above the adhesive paper transport system. The automatic ribbon cartridge changing system is installed at the front or rear end of the scanning adaptive pressure printing system and is used to replace the ribbon cartridge.

[0008] The beneficial effects of this invention are as follows: It utilizes five systems—a frame and tension-maintaining adhesive paper feeding system, an adhesive paper transport system, a scanning adaptive pressure printing system, an automatic ribbon cartridge changing system, and a camera-positioned die-cutting system—to achieve thermal transfer printing. The printing and paper-cutting mechanisms are all mounted on the frame, saving space and cost while coordinating the overall machine functions. The frame and tension-maintaining adhesive paper feeding system stores and transports the adhesive paper, while the adhesive paper transport system delivers the thermal transfer adhesive paper during printing, ensuring smooth paper feeding. The automatic ribbon cartridge changing system allows for changing the ribbon cartridge according to the desired printing color, eliminating the need to retract the thermal transfer adhesive paper during printing. This makes it suitable for wide-format, long-distance printing with high color registration accuracy. The scanning adaptive pressure printing system transfers the color from the ribbon to the thermal transfer adhesive paper for printing. The camera-positioned die-cutting system enables die-cutting. The entire machine boasts advantages such as high integration, compact structure, simple transmission, low cost, no waste of adhesive paper and ribbon, and multi-color digital printing capabilities. It can adapt to roll-to-roll and roll-to-sheet operations and is applicable to wide-format printing.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the frame and tension-maintaining adhesive paper system includes a frame, a feeding roll, feeding rollers, a feeding motor, a discharging roll, a discharging roller, and a take-up motor. There are two feeding rollers, which are rotatably mounted side-by-side in the middle of the frame. The feeding motor is fixedly connected to the frame and is drivenly connected to both feeding rollers. The feeding roll is placed on the two feeding rollers. There are also two discharging rollers, which are rotatably mounted side-by-side in the middle of the frame. The take-up motor is fixedly connected to the frame and is drivenly connected to both discharging rollers. The discharging roll is placed on the two discharging rollers.

[0011] The beneficial effects of adopting the above-mentioned further solution are as follows: The feeding motor drives the feeding roller to rotate, and the feeding roller drives the feeding roll to unwind through friction, conveying the heat transfer adhesive paper. A conveying allowance is maintained between the heat transfer adhesive paper and the adhesive paper transport system. After passing through the adhesive paper transport system and the camera-positioned die-cutting system, the heat transfer adhesive paper is wound onto the unloading roll. The take-up motor drives the unloading roller to retract the heat transfer adhesive paper through friction. The tension of the heat transfer adhesive paper before printing is ensured by the weight of the adhesive paper itself. During the printing process, the adhesive paper transport system propels the heat transfer adhesive paper forward and maintains the tension of the adhesive paper.

[0012] Furthermore, the adhesive tape transport system includes a paper feeding mechanism, a paper cutting mechanism, and an adhesive tape transport base. The paper feeding mechanism includes a front lower roller, a front upper pressure roller, a feed pressure plate, and a printing substrate. The adhesive tape transport base is fixed to the frame and the tension-maintaining adhesive tape system. The front lower roller and the front upper pressure roller are mounted vertically and rotatably on the rear end of the adhesive tape transport base. The feed pressure plate is vertically and slidably mounted on the adhesive tape transport base. The printing substrate is fixed to the adhesive tape transport base. The front lower roller, the feed pressure plate, and the printing substrate are arranged sequentially along the adhesive tape forward direction. The paper cutting mechanism is installed at the front end of the adhesive tape transport base.

[0013] The advantages of adopting the above-mentioned further solution are as follows: the lower front roller and the upper front pressure roller work together to transport the thermal transfer paper; the feed pressure plate restricts the position of the thermal transfer paper and prevents it from deviating; the printing platen supports the thermal transfer paper, facilitating printing on it by the scanning adaptive pressure printing system; and a paper cutting mechanism can be used to cut the thermal transfer paper after printing.

[0014] Furthermore, the adhesive tape transport system also includes a correction mechanism, which includes a correction pressure roller, a left printing paper feed roller, and a right printing paper feed roller. The left and right printing paper feed rollers are rotatably mounted on the left and right sides of the adhesive tape transport base, respectively, and are located in front of the printing substrate. The correction pressure roller is mounted on the adhesive tape transport base and is in close contact with the left and right printing paper feed rollers.

[0015] The beneficial effects of adopting the above-mentioned further scheme are as follows: the left and right printing paper feed rollers can pull the thermal transfer paper forward, while the front lower roller and front upper pressure roller can drive the thermal transfer paper forward at a slightly slower speed than the left and right printing paper feed rollers, achieving a stall action and providing a certain resistance for the thermal transfer paper's forward movement, thereby ensuring smooth paper feeding and constant tension. The correction pressure roller is used to press down on the thermal transfer paper, ensuring that the thermal transfer paper abuts against the left and right printing paper feed rollers. If the thermal transfer paper deviates in its direction of travel, the forward speed of the corresponding thermal transfer paper can be adjusted by adjusting the rotation speed of the left or right printing paper feed roller, thus achieving correction.

[0016] Furthermore, the scanning adaptive pressure printing system includes a printing mechanism, which includes a printhead housing, a ribbon cassette, and a printhead assembly. The printhead housing is slidably mounted above the adhesive tape transport system. The ribbon cassette includes a cassette body, a ribbon, a take-up shaft, and an unwind shaft. Both the take-up shaft and the unwind shaft are rotatably mounted inside the ribbon cassette body and are detachably connected to two ribbon cassette guide shafts mounted inside the printhead housing. The two ends of the ribbon are wound around the take-up shaft and the unwind shaft, respectively. The ribbon cassette body has an open ribbon printing area, with the middle of the ribbon located in the ribbon printing area. The printhead assembly is fixed inside the printhead housing and located above the middle of the ribbon.

[0017] The advantages of adopting the above-mentioned further solution are as follows: the printhead assembly is used to press down and heat the middle of the ribbon, so that the color of the heated area on the ribbon is transferred to the thermal transfer paper. The printhead housing drives the printhead assembly to move left and right, realizing scanning printing. The ribbon cartridge can be replaced by an automatic ribbon cartridge changing system. Two ribbon cartridge guide shafts inside the printhead housing drive the take-up and unwound shafts inside the ribbon cartridge to rotate, thereby winding the used ribbon onto the take-up shaft and releasing the unused ribbon from the unwound shaft to the ribbon printing area.

[0018] Furthermore, the scanning adaptive pressure printing system also includes a cleaning component, which includes a printing cleaning motor, a printing cleaning mechanism sheet metal, a cleaning mechanism linkage, cleaning adhesive tape, a cleaning adhesive tape roller, and a cleaning dip roller. There are multiple cleaning mechanism linkages, all parallel to each other. The two ends of each linkage are hinged to one side of the printing cleaning mechanism sheet metal and the printhead housing, respectively. The printing cleaning motor is fixedly connected to the printing cleaning mechanism sheet metal and is drivenly connected to one of the cleaning mechanism linkages. The cleaning adhesive tape roller and the cleaning dip roller are rotatably mounted on the printing cleaning mechanism sheet metal, and the two ends of the cleaning adhesive tape are wound around the cleaning adhesive tape roller and the cleaning dip roller, respectively.

[0019] The beneficial effects of adopting the above-mentioned further solution are as follows: The printing cleaning mechanism sheet metal, the cleaning mechanism connecting rod, and the print head housing constitute a parallel four-bar linkage. When the printing cleaning motor drives the cleaning mechanism connecting rod to rotate, the printing cleaning mechanism sheet metal can be raised or lowered. When the print head assembly moves with the print head housing for printing, the printing cleaning motor drives the cleaning mechanism connecting rod to rotate, thereby causing the printing cleaning mechanism sheet metal to descend until the cleaning adhesive paper on the cleaning dip roller comes into contact with the thermal transfer adhesive paper. As the print head housing moves, the cleaning dip roller rolls, and the cleaning adhesive paper removes dust or impurities from the thermal transfer adhesive paper, achieving cleaning. The cleaning adhesive paper roller is used to store unused cleaning adhesive paper, and used adhesive paper can be wound around it during the rolling of the cleaning dip roller. When not printing, the printing cleaning motor controls the printing cleaning mechanism sheet metal to rise and move away from the thermal transfer adhesive paper.

[0020] Furthermore, the automatic ribbon cartridge changing system includes a ribbon cartridge changing mechanism and a ribbon cartridge library. The ribbon cartridge library is fixedly connected to the frame and the tension-maintaining adhesive paper system, and has multiple storage areas arranged left and right. The storage areas are used to store the ribbon cartridges. The ribbon cartridge changing mechanism is installed at the front or rear end of the printhead housing and is used to drive the ribbon cartridges into the printhead housing or the storage area.

[0021] The advantages of adopting the above-mentioned further solution are: the ribbon cartridge library can store ribbon cartridges of multiple colors. The ribbon cartridge changing mechanism loads the ribbon cartridges into or from the printhead housing to the storage area, thus enabling cartridge replacement. In this way, the position of the thermal transfer paper remains unchanged during the printing of a section of content, and multi-color printing is achieved by changing different color ribbon cartridges, resulting in higher color registration accuracy. Furthermore, the scanning adaptive pressure printing system does not require multiple printhead assemblies with different colored ribbons, making the structure more compact and simpler.

[0022] Furthermore, the camera-positioning die-cutting system includes a die-cutting bracket, a die-cutting paper feeding mechanism, a die-cutting knife module, and a die-cutting miniature camera. The die-cutting bracket is fixed to the frame and the tension-maintaining adhesive paper system. The die-cutting paper feeding mechanism is mounted on the die-cutting bracket. The die-cutting knife module is slidably connected to the die-cutting bracket and can move back and forth. The die-cutting miniature camera is fixed to the die-cutting knife module.

[0023] The beneficial effects of adopting the above-mentioned further solution are: the die-cutting miniature camera obtains image information of the heat transfer paper to determine the shape and position to be cut, the heat transfer paper is driven to move back and forth by the die-cutting paper feeding mechanism, and the die-cutting knife module moves back and forth to cut the paper, so that any shape can be cut, that is, die-cutting is realized.

[0024] Furthermore, the camera-positioned die-cutting system also includes a die-cutting steering shaft and multiple die-cutting guide blocks. The die-cutting steering shaft is rotatably mounted on the die-cutting bracket and arranged in the left-right direction. The die-cutting steering shaft is located on the rear side of the die-cutting blade module. The multiple die-cutting guide blocks are spaced apart along the axial direction of the die-cutting steering shaft and are fixedly connected to the die-cutting steering shaft. Each die-cutting guide block has a die-cutting guide surface.

[0025] The beneficial effects of adopting the above-mentioned further solution are as follows: When the thermal transfer paper moves forward, it passes over the die-cutting guide block. When die-cutting is required, after printing, the paper-cutting mechanism will cut the thermal transfer paper in the left-right direction and then send it into the camera-positioned die-cutting system. If the thermal transfer paper needs to retract during the die-cutting process, to avoid the paper-cutting mechanism behind it, the die-cutting steering shaft rotates, and the die-cutting guide surface is raised. During the retraction process, the rear end of the thermal transfer paper is guided downward by the die-cutting guide surface, thus preventing it from retracting to the paper-cutting mechanism. After die-cutting is completed, the die-cutting steering shaft rotates back to its original position.

[0026] Furthermore, the die-cutting paper feeding mechanism includes a die-cutting paper feeding motor, a die-cutting drive shaft, a die-cutting pressure shaft, a die-cutting pressure shaft frame tension spring, and a die-cutting pressure shaft frame. The die-cutting paper feeding motor is fixedly connected to the die-cutting bracket, and its output shaft is drivenly connected to the die-cutting drive shaft. The die-cutting drive shaft is rotatably mounted on the die-cutting bracket. The die-cutting pressure shaft is rotatably mounted on one end of the die-cutting pressure shaft frame. The middle part of the die-cutting pressure shaft frame is hinged to the die-cutting bracket. The two ends of the die-cutting pressure shaft frame tension spring are respectively connected to the other end of the die-cutting bracket and the die-cutting pressure shaft frame, and apply an elastic force to the die-cutting pressure shaft frame to rotate it until the die-cutting pressure shaft abuts against the die-cutting drive shaft.

[0027] The beneficial effects of adopting the above-mentioned further solution are: the elastic force of the die-cutting pressure roller frame pulls the die-cutting pressure roller frame, so that the die-cutting pressure roller abuts against the die-cutting drive shaft, thereby clamping the heat transfer paper. The die-cutting paper feeding motor drives the die-cutting drive shaft to rotate, thereby causing the heat transfer paper to move forward or backward during the die-cutting process. Attached Figure Description

[0028] Figure 1 This is a three-dimensional view of the wide-format thermal transfer digital printer of the present invention from a first-view perspective;

[0029] Figure 2 This is a three-dimensional view of the wide-format thermal transfer digital printer of the present invention from a second perspective;

[0030] Figure 3 A 3D diagram of the frame and tension-maintaining adhesive paper system;

[0031] Figure 4 for Figure 3 A-section view of the frame and tension-maintaining adhesive paper system;

[0032] Figure 5 A 3D diagram of the adhesive tape transport system;

[0033] Figure 6 for Figure 5 Sectional view of the adhesive tape transport system along direction B;

[0034] Figure 7 This is a magnified view of a section where the paper is pressed against the side of the printer.

[0035] Figure 8 A 3D assembly diagram of a scanning adaptive pressure printing system;

[0036] Figure 9 A 3D diagram of the printing mechanism;

[0037] Figure 10 for Figure 9 Sectional view of the printing mechanism along line C;

[0038] Figure 11 for Figure 9 A cross-sectional view of the printing mechanism taken along a plane perpendicular to the guide axis of the ribbon cartridge;

[0039] Figure 12 A 3D view of the printhead assembly;

[0040] Figure 13 This is a rear view of the printhead assembly.

[0041] Figure 14 This is a diagram of the internal structure of the printing mechanism;

[0042] Figure 15 This is a structural diagram showing the interaction between the scanning adaptive pressure printing system and the scanning adaptive pressure printing system.

[0043] Figure 16 for Figure 15 Cross-sectional view of the scanning adaptive pressure printing system along the D direction;

[0044] Figure 17 A bottom view of the carbon belt changing mechanism;

[0045] Figure 18 This is the front view of the ribbon cartridge;

[0046] Figure 19 For the assembly of the take-up and unwind shafts Figure 18 Front view of the assembly position when using a carbon ribbon box;

[0047] Figure 20 A 3D diagram of a camera-positioned die-cutting system;

[0048] Figure 21 for Figure 20 Sectional view along direction E.

[0049] The attached diagram lists the components represented by each number as follows:

[0050] 1. Frame and tension-maintaining adhesive paper system; 101. Lower frame; 102. Casters with feet; 103. Printing column; 104. Printing beam; 105. Upper frame base; 106. Feeding roller; 107. Material roll reel holder; 108. Material roll reel; 109. Lower frame crossbar; 110. Rewinding pressure roller; 111. Feeding roll; 112. Heat transfer adhesive paper; 113. Rewinding motor; 114. Adhesive paper ultrasonic sensor; 115. Electrical box; 116. Feeding roll; 117. Feeding roller; 118. Feeding motor;

[0051] 2. Adhesive Tape Transport System; 201. Adhesive Tape Transport Base; 202. Right Side Printing Paper Feed Motor; 203. Printing Table; 204. Feeding Platen; 205. Front Upper Pressure Roller; 206. Front Feeding Motor; 207. Front Pressing Motor; 208. Printing Side Pressing Head; 209. Cutter Motor; 210. Left Side Printing Paper Feed Motor; 211. Paper Cutter; 212. Correction Pressure Roller; 213. Feeding Platen Connecting Rod; 214. Cutter Motion Guide Rail; 215. Front Lower Roller; 216. Side Pressing Motor; 217. Side Ultrasonic Sensor; 218. Left Side Printing Paper Feed Roller; 219. Right Side Printing Paper Feed Roller;

[0052] 3. Scanning adaptive pressure printing system; 301. Printhead transverse motor; 302. Printhead transverse lead screw; 303. Printhead connecting sheet metal; 304. Printhead cable routing chain; 305. Cable routing sheet metal; 306. Printing mechanism; 307. Ribbon cartridge changing mechanism; 308. Printhead housing; 309. Printhead slider connecting block; 310. Printing cleaning motor; 311. Cleaning adhesive roller; 312. Cleaning adhesive roller; 313. Printing cleaning mechanism sheet metal; 314. Ribbon cartridge; 141. Top cover; 3142. Bottom cover; 3143. Take-up shaft; 3144. Unwind shaft; 3145. First signal bar; 3146. Second signal bar; 3147. Tooth; 315. Ribbon cassette guide shaft; 316. Ribbon take-up motor; 317. Ribbon take-up pulley; 318. Printhead motor push plate; 319. Printhead mechanism plate; 320. Printhead through-type linear stepper motor; 321. Printhead fixing plate; 322. Printhead; 323. Printhead buffer spring;

[0053] 4. Automatic ribbon cartridge changing system; 401. Ribbon cartridge holder upright plate; 402. Ribbon cartridge holder; 403. Ribbon cartridge in-situ micro switch; 404. Infeed D-type dial wheel; 405. Outfeed circular dial wheel; 406. Ribbon cartridge positioning micro switch; 407. Printing position pad roller; 408. Upper cartridge position pad roller; 409. Infeed motor; 410. Outfeed motor;

[0054] 5. Camera-positioned die-cutting system; 501. Die-cutting paper feed motor; 502. Die-cutting left limit switch; 503. Die-cutting steering shaft; 504. Die-cutting guide block; 5041. Die-cutting guide surface; 505. Die-cutting right limit switch; 506. Die-cutting reversing solenoid valve; 507. Die-cutting blade motor; 508. Reducer; 509. Die-cutting blade module; 510. Die-cutting blade solenoid valve; 511. Die-cutting miniature camera; 512. Die-cutting ejector rod; 513. Die-cutting blade; 514. Die-cutting drive shaft; 515. Die-cutting pressure shaft; 516. Die-cutting pressure shaft frame tension spring; 517. Die-cutting pressure shaft frame. Detailed Implementation

[0055] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0056] like Figures 1-21 As shown, this embodiment provides a wide-format thermal transfer digital printer, including a frame and tension-maintaining adhesive paper system 1, an adhesive paper transport system 2, a scanning adaptive pressure printing system 3, an automatic ribbon cartridge changing system 4, and a camera-positioning die-cutting system 5. The adhesive paper transport system 2 and the camera-positioning die-cutting system 5 are arranged sequentially along the adhesive paper's forward direction and installed above the frame and tension-maintaining adhesive paper system 1. The scanning adaptive pressure printing system 3 is installed above the adhesive paper transport system 2. The automatic ribbon cartridge changing system 4 is installed at the front or rear end of the scanning adaptive pressure printing system 3 and is used to replace the ribbon cartridge 314. The middle part of the thermal transfer adhesive paper 112 passes through the adhesive paper transport system 2 and the camera-positioning die-cutting system 5.

[0057] The thermal transfer printing system employs five systems: a frame and tension-maintaining adhesive paper feeding system 1, an adhesive paper transport system 2, a scanning adaptive pressure printing system 3, an automatic ribbon cartridge changing system 4, and a camera-positioned die-cutting system 5. The printing and paper-cutting mechanisms are all mounted on the frame, saving space and cost while coordinating the overall machine functionality. The frame and tension-maintaining adhesive paper feeding system 1 stores and transports the adhesive paper. During printing, the adhesive paper transport system 2 transports the thermal transfer adhesive paper 112, ensuring smooth paper feeding. The automatic ribbon cartridge changing system 4 allows for changing the ribbon cartridge 314 according to the required printing colors, eliminating the need to retract the thermal transfer adhesive paper 112 during printing. This system is suitable for wide-format, long-distance printing with high color registration accuracy. The scanning adaptive pressure printing system 3 transfers the colors from the ribbon to the thermal transfer adhesive paper 112 for printing. The camera-positioned die-cutting system 5 enables die-cutting. The machine boasts advantages such as high integration, compact structure, simple transmission, low cost, no waste of adhesive paper and ribbon, and multi-color digital printing capability. It can also adapt to roll-to-roll and roll-to-sheet operations and can be applied to wide-format printing.

[0058] like Figure 4 , Figure 5 and Figure 21 The terms "front" and "back" as used in this article refer to the forward and backward directions of the adhesive paper. The heat transfer adhesive paper 112 moves forward from the frame and tension holding adhesive paper system 1 and passes through the adhesive paper transport system 2 and the camera positioning die-cutting system 5. If the heat transfer adhesive paper 112 does not need to be cut, it will be put back into the frame and tension holding adhesive paper system 1 after printing.

[0059] Based on the above technical solution, the frame and tension-maintaining adhesive paper system 1 includes a frame, a feeding roll 116, feeding rollers 117, a feeding motor 118, a discharging roll 111, a discharging roller 106, and a take-up motor 113. There are two feeding rollers 117, which are rotatably mounted side-by-side in the middle of the frame. The feeding motor 118 is fixedly connected to the frame and is also driven by the two feeding rollers 117. The material roll 116 is placed on the two feeding rollers 117. There are two unloading rollers 106, which are rotatably mounted side by side in the middle of the frame. The take-up motor 113 is fixedly connected to the frame and is drivenly connected to the two unloading rollers 106 respectively. The unloading roll 111 is placed on the two unloading rollers 106. The two ends of the heat transfer paper 112 are respectively wound around the feeding roll 116 and the unloading roll 111.

[0060] like Figure 3 and Figure 4As shown, the feeding motor 118 drives the feeding roller 117 to rotate. The feeding roller 117 drives the feeding roll 116 to unwind through friction, conveying the heat transfer adhesive paper 112. There is a conveying allowance between the heat transfer adhesive paper 112 and the adhesive paper transport system 2. After passing through the adhesive paper transport system 2 and the camera positioning die-cutting system 5, the heat transfer adhesive paper 112 is wound onto the unloading roll 111. The take-up motor 113 drives the unloading roller 106 to take up the heat transfer adhesive paper 112 through friction. The tension of the heat transfer adhesive paper 112 before printing is ensured by the weight of the adhesive paper itself. During the printing process, the adhesive paper transport system 2 drives the heat transfer adhesive paper 112 forward and maintains the tension of the adhesive paper.

[0061] Furthermore, the frame and tension-maintaining adhesive paper system 1 also includes a take-up pressure roller 110 and a pressure roller bracket. One end of the pressure roller bracket is hinged to the frame, and the take-up pressure roller 110 is rotatably mounted on the other end of the pressure roller bracket, and abuts against the upper side of the unloading roll 111 under its own weight. The take-up pressure roller 110 can press down on the unloading roll 111, so that the heat transfer adhesive paper 112 is smoothly wound on the unloading roll 111 during take-up.

[0062] Furthermore, both ends of the feed roll 116 and both ends of the unload roll 111 are fixed with a material roll 108. Each unload roll 106 and each feed roll 117 is fixed with two material roll spool seats 107. The material roll spool seats 107 have annular grooves. The material roll 108 is inserted into the annular grooves of the corresponding material roll spool seats 107, so that the feed roll 116 and the unload roll 111 are axially limited by the material roll spool seats 107.

[0063] The feeding motor 118 drives the feeding roller 117 via a synchronous belt. The roller 117 rubs against the material reel 108 of the feeding roll 116 via the material reel seat 107, causing the feeding roll 116 to rotate and feed out the heat transfer paper 112. The heat transfer paper 112 passes through the paper transfer system 2. The take-up motor 113 drives the unloading roller 106 via a synchronous belt. The unloading roller 106 rubs against the material reel 108 of the unloading roll 111 via the material reel seat 107, causing the unloading roll 111 to take in the heat transfer paper 112.

[0064] Furthermore, the frame includes an upper frame and a lower frame 101, with the upper frame fixed above the lower frame 101. The feed roll 116 and the unload roll 111 are respectively installed on both sides of the lower frame 101. An electrical box 115 is used to house the controller and wiring. The electrical box 115 is fixedly connected to the lower frame 101 and located between the feed roll 116 and the unload roll 111. The lower frame 101 has a compact structure. Specifically, horizontally arranged lower frame crossbars 109 are fixed at both ends of the lower frame 101. The feed roll 116 and the unload roll 111 are rotatably mounted on the lower frame crossbars 109 via bearings. The lower end of the lower frame 101 is also equipped with casters 102 with foot cups for easy movement of the frame.

[0065] Among them, such as Figure 4 As shown, the heat transfer adhesive paper 112 has a conveying allowance between the feeding roll 116 and the adhesive paper conveying system 2, and between the feeding roll 111 and the camera positioning die-cutting system 5. The heat transfer adhesive paper 112 is not stretched taut during the feeding roll 116 and the feeding roll 111, thus avoiding affecting the tension of the heat transfer adhesive paper 112 during the printing process. An ultrasonic sensor 114 for applying adhesive paper is fixed to the lower end of the electrical box 115 to detect whether the heat transfer adhesive paper 112 has sagged to a predetermined length.

[0066] Furthermore, the upper frame includes printing columns 103, printing beams 104, and an upper frame base 105. The upper frame base 105 is fixed to the upper end of the lower frame 101. Multiple printing columns 103 are fixed at both ends of the upper frame base 105. Both ends of the printing beams 104 are fixed to the printing columns 103 at both ends of the upper frame base 105. The upper frame is used to support and install the adhesive tape transport system 2, the scanning adaptive pressure printing system 3, the automatic ribbon cartridge changing system 4, and the camera positioning die-cutting system 5.

[0067] Specifically, the controller is connected to the feeding motor 118 and the receiving motor 113 to control the release and recycling of the thermal transfer paper 112.

[0068] Based on any of the above solutions, the adhesive tape transport system 2 includes a paper feeding mechanism, a paper cutting mechanism, and an adhesive tape transport base 201. The paper feeding mechanism includes a front lower roller 215, a front upper pressure roller 205, a feed pressure plate 204, and a printing substrate 203. The adhesive tape transport base 201 is fixed to the frame and the tension-maintaining adhesive tape system 1. The front lower roller 215 and the front upper pressure roller 205 are parallel to each other, closely attached vertically, and rotatably mounted at the rear end of the adhesive tape transport base 201. The heat transfer adhesive tape 112 is positioned... Between the upper front roller 205 and the lower front roller 215, the upper front roller 205 presses the heat transfer adhesive paper 112 against the lower front roller 215. The feed pressure plate 204 is vertically slidably mounted on the adhesive paper transport base 201. The printing substrate 203 is fixed on the adhesive paper transport base 201. The lower front roller 215, the feed pressure plate 204, and the printing substrate 203 are arranged sequentially along the adhesive paper forward direction. The paper cutting mechanism is installed at the front end of the adhesive paper transport base 201.

[0069] like Figures 5-7As shown, the lower front roller 215 and the upper front roller 205 work together to feed the thermal transfer paper 112. The feed pressure plate 204 is used to limit the position of the thermal transfer paper 112 and prevent it from deviating. The printing platen 203 supports the thermal transfer paper 112, facilitating printing on it by the scanning adaptive pressure printing system 3. When the thermal transfer paper 112 needs to be cut after printing, a paper cutting mechanism can be used.

[0070] Specifically, the paper feeding mechanism also includes a front-end paper feed motor 206 fixedly connected to the adhesive paper transport base 201. The output shaft of the front-end paper feed motor 206 is connected to the front-end lower roller 215 and drives the front-end lower roller 215 to rotate, thereby moving the thermal transfer adhesive paper 112. The controller is communicatively connected to the front-end paper feed motor 206 and controls its rotation or stop.

[0071] Specifically, the front upper pressure roller 205 is rotatably mounted on the front upper pressure roller bracket. The front upper pressure roller bracket is hinged to the adhesive paper transport base 201 and is provided with a spring connected to the adhesive paper transport base 201. The front upper pressure roller bracket is rotated by the elastic force of the spring. Under the action of the elastic force, the front upper pressure roller 205 presses the heat transfer adhesive paper 112 against the front lower roller 215.

[0072] Specifically, the paper feeding mechanism also includes a front-end paper-pressing motor 207, which is connected to the feed pressure plate 204 and drives the feed pressure plate 204 to move vertically back and forth. The lower sides of both ends of the feed pressure plate 204 are also fixedly connected by feed pressure connecting rods 213, forming a U-shaped structure between the feed pressure plate 204 and the feed pressure connecting rods 213, through which the heat transfer paper 112 passes. The controller is communicatively connected to the front-end paper-pressing motor 207 and controls its rotation or stop.

[0073] Specifically, the scanning adaptive pressure printing system 3 is located above the printing platen 203 and prints on the thermal transfer paper 112.

[0074] Furthermore, the adhesive tape transport system 2 also includes a printing side paper pressure head 208 and a side paper pressure motor 216. The side paper pressure motor 216 is fixedly connected to the adhesive tape transport base 201, and its output shaft is fixed with a cam or eccentric wheel. The printing side paper pressure head 208 is vertically slidably mounted on the adhesive tape transport base 201 and is used to press or release the side of the heat transfer adhesive tape 112. The outer wall of the printing side paper pressure head 208 has a frame structure, and the cam or eccentric wheel of the side paper pressure motor 216 is located inside the frame structure. When the side paper pressure motor 216 rotates, it drives the cam or eccentric wheel to rotate, thereby pushing the frame structure to move, realizing the vertical movement of the printing side paper pressure head 208. The printing side paper pressure head 208 is located at the left end and / or right end of the printing substrate 203. The controller is communicatively connected to the side paper pressure motor 216 and controls its rotation or stop.

[0075] Furthermore, the paper cutting mechanism includes a cutter motor 209, a paper cutter 211, and a cutter motion guide rail 214. The cutter motion guide rail 214 is arranged in the left-right direction and is fixedly connected to the adhesive paper transport base 201. The paper cutter 211 is slidably mounted on the cutter motion guide rail 214. The cutter motor 209 is connected to the paper cutter 211 via a synchronous belt drive and drives the paper cutter 211 to move linearly back and forth along the cutter motion guide rail 214. The controller is communicatively connected to the cutter motor 209 and controls its rotation or stop.

[0076] Based on any of the above solutions, the adhesive tape transport system 2 further includes a correction mechanism, which includes a correction pressure roller 212, a left printing paper feed roller 218, and a right printing paper feed roller 219. The left printing paper feed roller 218 and the right printing paper feed roller 219 are rotatably mounted on the left and right sides of the adhesive tape transport base 201, respectively, and are located in front of the printing substrate 203. The correction pressure roller 212 is mounted on the adhesive tape transport base 201 and is in close contact with the left printing paper feed roller 218 and the right printing paper feed roller 219. The heat transfer adhesive tape 112 is located between the left printing paper feed roller 218 and the correction pressure roller 212, and between the right printing paper feed roller 219 and the correction pressure roller 212.

[0077] The left and right printing rollers 218 and 219 pull the heat transfer paper 112 forward. Simultaneously, the front lower roller 215 and front upper pressure roller 205 drive the heat transfer paper 112 forward at a slightly slower speed than the left and right printing rollers 218 and 219, creating a stall action. This provides resistance to the forward movement of the heat transfer paper 112, ensuring smooth paper feeding and constant tension. The correction roller 212 presses down on the heat transfer paper 112, ensuring it contacts the left and right printing rollers 218 and 219. If the heat transfer paper 112 deviates from its intended direction, the rotational speed of the left or right printing roller can be adjusted to change the forward speed of the corresponding side of the heat transfer paper 112, thus correcting the deviation.

[0078] Specifically, the correction mechanism also includes a right-side printing paper feed motor 202, a left-side printing paper feed motor 210, and a side ultrasonic sensor 217 fixed on the adhesive paper transport base 201. The right-side printing paper feed motor 202 is drivenly connected to the right-side printing paper feed roller 219, and the left-side printing paper feed motor 210 is drivenly connected to the left-side printing paper feed roller 218. The side ultrasonic sensor 217 is used to detect the distance information between itself and the side of the thermal transfer adhesive paper 112 and transmit it to the controller. The controller can then use this distance information to determine whether the forward direction of the thermal transfer adhesive paper 112 has deviated. Based on the distance information, the controller controls the rotation speed of the left-side printing paper feed motor 210 and the right-side printing paper feed motor 202.

[0079] The left printing paper feed roller 218 and the right printing paper feed roller 219 can be set on different axes. Of course, the correction effect is better when the left printing paper feed roller 218 and the right printing paper feed roller 219 are set on the same axis.

[0080] The working process of the adhesive paper transport system 2 is as follows: The front paper feed motor 206 of the adhesive paper transport system 2 drives the front lower roller 215 in conjunction with the front upper pressure roller 205 to feed the adhesive paper onto the printing substrate 203. After printing, the paper continues to be fed forward. The edge distance of the adhesive paper is measured by the side ultrasonic sensor 217. The left printing paper feed motor 210 drives the left printing paper feed roller 218, and the right printing paper feed motor 202 drives the right printing paper feed roller 219, forming a left-right speed difference for paper feeding correction. If it is necessary to cut the heat transfer adhesive paper 112, when it continues to pass through the paper cutting mechanism, the cutter motor 209 drives the paper cutter 211 to move left and right within the cutter motion guide rail 214 via the synchronous belt to cut the paper.

[0081] Based on any of the above solutions, the scanning adaptive pressure printing system 3 includes a printing mechanism 306, which includes a printhead housing 308, a ribbon cassette 314, and a printhead assembly. The printhead housing 308 is slidably mounted above the adhesive tape transport system 2. The ribbon cassette 314 includes a ribbon cassette body, a ribbon, a take-up shaft 3143, and an unwind shaft 3144. Both the take-up shaft 3143 and the unwind shaft 3144 are rotatably mounted in the ribbon cassette body and are detachably connected to two ribbon cassette guide shafts 315 mounted in the printhead housing 308. The two ends of the ribbon are wound around the take-up shaft 3143 and the unwind shaft 3144, respectively. The ribbon cassette body has an open ribbon printing area, and the middle of the ribbon is located in the ribbon printing area. The printhead assembly is fixed inside the printhead housing 308 and is located above the middle of the ribbon.

[0082] The printhead assembly is used to press down and heat the center of the ribbon, transferring the color of the heated area on the ribbon onto the thermal transfer paper 112. The printhead housing 308 drives the printhead assembly to move left and right, achieving scanning printing. The ribbon cartridge 314 can be replaced by the automatic ribbon cartridge changing system 4. Two ribbon cartridge guide shafts 315 inside the printhead housing 308 drive the take-up shaft 3143 and the unwind shaft 3144 inside the ribbon cartridge 314 to rotate, thereby winding the used ribbon onto the take-up shaft 3143 and releasing the unused ribbon from the unwind shaft 3144 to the ribbon printing area.

[0083] Furthermore, such as Figure 8 As shown, the scanning adaptive pressure printing system 3 also includes a printhead transverse motor 301, a printhead transverse lead screw 302, a printhead transverse guide rail, a printhead connecting sheet metal 303, a printhead cable routing chain 304, cable routing sheet metal 305, and a printhead slider connecting block 309. The controller is communicatively connected to the printhead transverse motor 301 and controls its rotation or stopping.

[0084] The printhead transverse lead screw 302 and the printhead transverse guide rail are parallel to each other and perpendicular to the direction of adhesive paper movement. The printhead transverse lead screw 302 is rotatably mounted on the frame. The printhead transverse guide rail is fixedly connected to the frame. A printhead slider connecting block 309 is fixed on the printhead housing 308. A printhead slider is fixed on the printhead slider connecting block 309. A printhead drive nut is also fixed on the printhead housing 308. The printhead drive nut is threadedly connected to the printhead transverse lead screw 302. The printhead slider is slidably connected to the printhead transverse guide rail. The printhead transverse motor 301 is driven by the printhead transverse lead screw 302 and drives the printhead transverse lead screw 302 to rotate, thereby enabling the printhead housing 308 to slide along the printhead transverse lead screw 302.

[0085] The printhead connecting sheet metal 303 is fixed to the printhead housing 308 and to one end of the printhead cable drag chain 304. The other end of the printhead cable drag chain 304 is fixed to the cable routing sheet metal 305. The cable routing sheet metal 305 is fixedly connected to the frame and is used for cable routing.

[0086] Furthermore, such as Figure 18 and Figure 19 As shown, the ribbon cartridge 314 includes an upper cover 3141 and a lower cover 3142 that are fastened together, and a take-up shaft 3143 and an unwind shaft 3144 are rotatably mounted between the upper cover 3141 and the lower cover 3142. The top surface of the upper cover 3141 has a raised first signal bar 3145 and a second signal bar 3146.

[0087] Furthermore, such as Figure 14 As shown, the printing mechanism 306 also includes a ribbon take-up motor 316, a ribbon take-up pulley 317, a ribbon unwind motor, and a ribbon unwind pulley. The ribbon take-up pulley 317 and the ribbon unwind pulley are rotatably mounted on the outside of two ribbon cartridge guide shafts 315 via bearings. The ribbon take-up motor 316 is driven by the ribbon take-up pulley 317, and the ribbon unwind motor is driven by the ribbon unwind pulley. When the take-up shaft 3143 and the unwind shaft 3144 are installed in the printing mechanism 306, they are supported by the two ribbon cartridge guide shafts 315. The ends of the take-up shaft 3143 and the unwind shaft 3144 have radially outward protruding teeth 3147. The take-up shaft 3143 and the unwind shaft 3144 are respectively inserted into the grooves on the ribbon take-up pulley 317 and the ribbon unwind pulley through the teeth 3147, thereby transmitting power. The carbon ribbon take-up pulley 317 and the carbon ribbon unwind pulley drive the take-up shaft 3143 and the unwind shaft 3144 to rotate, thereby taking in and unwinding the carbon ribbon. The controller is communicatively connected to the carbon ribbon take-up motor 316 and the carbon ribbon unwind motor, and controls their rotation or stopping.

[0088] Furthermore, such as Figure 12 and Figure 13 As shown, the printhead assembly includes a printhead motor push plate 318, a printhead mechanism plate 319, a printhead through-type linear stepper motor 320, a printhead fixing plate 321, a printhead 322, and a printhead buffer spring 323.

[0089] The printhead mechanism plate 319 is arranged along the direction of adhesive paper advance and fixed inside the printhead housing 308. A vertically movable printhead through-type linear stepper motor 320 is installed on the printhead mechanism plate 319. The printhead motor push plate 318 is fixed on the printhead through-type linear stepper motor 320. The printhead fixing plate 321 is slidably connected to the printhead mechanism plate 319 and has a convex U-shaped limiting hole. The printhead motor push plate 318 is located in the convex U-shaped limiting hole, and its upper end face abuts against the stepped surface of the convex U-shaped limiting hole. The two ends of the printhead buffer spring 323 abut against the printhead motor push plate 318 and the bottom surface of the convex U-shaped limiting hole, respectively. The printhead 322 is fixed to the lower end of the printhead fixing plate 321 and is used for printing. During printing, the printhead through-type linear stepper motor 320 drives the printhead fixing plate 321 downwards, pressing down on the ribbon and thermal transfer paper 112. Due to the printhead buffer spring 323, the printhead 322 can float up and down, adaptively pressing down on the ribbon, providing greater flexibility. When not printing, the printhead through-type linear stepper motor 320 drives the printhead fixing plate 321 upwards. The controller is communicatively connected to the printhead through-type linear stepper motor 320 and controls its rotation or stopping.

[0090] The principle of the scanning adaptive pressure printing system 3 is as follows: the horizontal motor 301 of the print head drives the horizontal lead screw 302 of the print head to rotate through the synchronous belt, thereby realizing the horizontal movement of the printing mechanism 306. The print head 322 scans and prints the thermal transfer adhesive paper 112 on the printing substrate 203, thereby transferring the color of the ribbon in the ribbon cartridge 314 to the adhesive paper.

[0091] Based on any of the above solutions, the scanning adaptive pressure printing system 3 further includes a cleaning component, which includes a printing cleaning motor 310, a printing cleaning mechanism sheet metal 313, a cleaning mechanism connecting rod, cleaning adhesive tape, a cleaning adhesive tape roller 311, and a cleaning dip roller 312. There are multiple cleaning mechanism connecting rods, which are parallel to each other. The two ends of each cleaning mechanism connecting rod are respectively hinged to one side of the printing cleaning mechanism sheet metal 313 and the print head housing 308. The printing cleaning motor 310 is fixedly connected to the printing cleaning mechanism sheet metal 313 and is drivenly connected to one of the cleaning mechanism connecting rods. The cleaning adhesive tape roller 311 and the cleaning dip roller 312 are rotatably mounted on the printing cleaning mechanism sheet metal 313. The two ends of the cleaning adhesive tape are respectively wound around the cleaning adhesive tape roller 311 and the cleaning dip roller 312.

[0092] The controller communicates with the print cleaning motor 310 and controls its rotation or stop. The print cleaning mechanism sheet metal 313, the cleaning mechanism linkage, and the print head housing 308 constitute a parallel four-bar linkage. When the print cleaning motor 310 drives the cleaning mechanism linkage to rotate, the print cleaning mechanism sheet metal 313 can rise or fall. When the print head assembly moves with the print head housing 308 for printing, the print cleaning motor 310 drives the cleaning mechanism linkage to rotate, causing the print cleaning mechanism sheet metal 313 to fall until the cleaning adhesive paper on the cleaning dip roller 312 comes into contact with the thermal transfer adhesive paper 112. As the print head housing 308 moves, the cleaning dip roller 312 rolls, and the cleaning adhesive paper removes dust or impurities from the thermal transfer adhesive paper 112, achieving cleaning. The cleaning adhesive paper roller 311 is used to store unused cleaning adhesive paper, and the cleaning dip roller 312 can wind used adhesive paper onto it during its rolling process. When not printing, the print cleaning motor 310 controls the print cleaning mechanism sheet metal 313 to rise and move away from the thermal transfer adhesive paper 112.

[0093] Based on any of the above solutions, the automatic ribbon cartridge changing system 4 includes a ribbon cartridge changing mechanism 307 and a ribbon cartridge storage 402. The ribbon cartridge storage 402 is fixedly connected to the frame and the tension-maintaining adhesive paper system 1, and has multiple storage areas arranged left and right. The storage areas are used to store the ribbon cartridges 314. The ribbon cartridge changing mechanism 307 is installed at the front or rear end of the printhead housing 308 and is used to drive the ribbon cartridges 314 into the printhead housing 308 or the storage area.

[0094] The ribbon cartridge library 402 can store ribbon cartridges 314 of multiple colors. The ribbon cartridge changing mechanism 307 loads the ribbon cartridge 314 into the printhead housing 308 or delivers it from the printhead housing 308 to the storage area, thus replacing the ribbon cartridge 314. In this way, the position of the thermal transfer paper 112 remains unchanged during the printing of a section of content, and multi-color printing is achieved by changing different colored ribbon cartridges 314, resulting in higher color registration accuracy. Moreover, the scanning adaptive pressure printing system 3 does not require multiple sets of printhead assemblies with different colored ribbons, making the structure more compact and simpler.

[0095] Specifically, the ribbon cartridge holder upright plate 401 is fixed to both ends of the ribbon cartridge holder 402 and connected to the wiring sheet metal 305. The wiring sheet metal 305 is fixed to the upper end of the ribbon cartridge holder 402 and closes the top surface of the ribbon cartridge holder 402. Figure 16As shown, a rotatable print position roller 407 is installed on the lower side of the inner wall of the printhead housing 308, and an upper cartridge position roller 408 is rotatably installed on the side wall of each storage area. The ribbon cartridge 314 can move on the print position roller 407 and the upper cartridge position roller 408, thereby reducing resistance during movement. A ribbon cartridge positioning micro switch 406 is fixed on the inner wall of the printhead housing 308, and a ribbon cartridge home position micro switch 403 is fixed on the side wall of each storage area. The first signal bar 3145 and the second signal bar 3146 are used to trigger the ribbon cartridge positioning micro switch 406 and the ribbon cartridge home position micro switch 403, respectively, so that the position of the ribbon cartridge 314 can be determined according to the signals of the ribbon cartridge positioning micro switch 406 and the ribbon cartridge home position micro switch 403. The controller is communicatively connected to the ribbon box positioning micro switch 406 and the ribbon box home position micro switch 403, respectively, and acquires their positioning signals and home position signals. Based on the positioning signals and home position signals, the controller controls the start and stop of the ribbon box changing mechanism 307.

[0096] Specifically, such as Figure 17 As shown, the ribbon cartridge changing mechanism 307 includes an infeed D-shaped dial 404, an outfeed circular dial 405, an infeed motor 409, and an outfeed motor 410. The infeed D-shaped dial 404 and the outfeed circular dial 405 are rotatably mounted on the printhead housing 308. The infeed motor 409 and the outfeed motor 410 are fixed on the printhead housing 308 and are respectively connected to the infeed D-shaped dial 404 and the outfeed circular dial 405 for transmission. When the infeed D-shaped dial 404 and the outfeed circular dial 405 rotate, they can rub against the top surface of the ribbon cartridge 314, thereby pushing the ribbon cartridge 314 to move in and out of the printhead housing 308, realizing the replacement of the ribbon cartridge 314. The infeed D-shaped dial 404 is D-shaped and has a default portion relative to a circle, such as... Figure 16 As shown, when the default section is rotated downwards, the infeed D-type dial 404 does not contact the ribbon cartridge 314. During printing, the printhead housing 308 moves laterally, and this default section can avoid the ribbon cartridge 314 inside the ribbon cartridge magazine 402. The controller is communicatively connected to the infeed motor 409 and the outfeed motor 410, and controls their rotation or stopping.

[0097] Based on any of the above solutions, the camera-positioning die-cutting system 5 includes a die-cutting bracket, a die-cutting paper feeding mechanism, a die-cutting knife module 509, and a die-cutting miniature camera 511. The die-cutting bracket is fixed on the frame and the tension-holding adhesive paper system 1. The die-cutting paper feeding mechanism is installed on the die-cutting bracket and drives the heat transfer adhesive paper 112 to move back and forth. The die-cutting knife module 509 is slidably connected to the die-cutting bracket. The die-cutting knife module 509 can move back and forth left and right and cut paper. The die-cutting miniature camera 511 is fixed on the die-cutting knife module 509.

[0098] The die-cutting miniature camera 511 acquires image information of the heat transfer paper 112 to determine the shape and position to be cut. The heat transfer paper 112 is driven to move back and forth by the die-cutting paper feeding mechanism, and moves back and forth to cut the paper in conjunction with the die-cutting knife module 509. This allows for cutting of any shape, thus achieving die-cutting.

[0099] Specifically, the controller is communicatively connected to the die-cutting paper feeding mechanism, the die-cutting knife module 509, and the die-cutting miniature camera 511. The die-cutting miniature camera 511 is used to acquire image information of the heat transfer adhesive paper 112 and transmit it to the controller. The controller controls the die-cutting paper feeding mechanism to move the adhesive paper back and forth and / or controls the die-cutting knife module 509 to move left and right, thereby realizing paper cutting along the edge of the image or cutting into a specific shape.

[0100] Based on any of the above solutions, the camera positioning die-cutting system 5 further includes a die-cutting steering shaft 503 and a plurality of die-cutting guide blocks 504. The die-cutting steering shaft 503 is rotatably mounted on the die-cutting bracket and arranged in the left-right direction. The die-cutting steering shaft 503 is located behind the die-cutting blade module 509. The plurality of die-cutting guide blocks 504 are spaced apart along the axial direction of the die-cutting steering shaft 503 and are fixedly connected to the die-cutting steering shaft 503. Each die-cutting guide block 504 has a die-cutting guide surface 5041.

[0101] As the heat transfer paper 112 moves forward, it passes over the die-cutting guide block 504. When die-cutting is required, after printing, the paper-cutting mechanism will cut the heat transfer paper 112 in the left-right direction and then send it into the camera-positioned die-cutting system 5. If the heat transfer paper 112 needs to retract during die-cutting, to avoid the paper-cutting mechanism behind it, the die-cutting steering shaft 503 rotates, and the die-cutting guide surface 5041 is erected. During the retraction process, the rear end of the heat transfer paper 112 is guided downward by the die-cutting guide surface 5041, thus preventing it from retracting to the paper-cutting mechanism. After die-cutting is completed, the die-cutting steering shaft 503 rotates back to its original position.

[0102] Specifically, the valve stem of the die-cutting solenoid valve 506 is hinged to the die-cutting steering shaft 503 via the die-cutting connecting rod. The controller can control whether the die-cutting steering shaft 503 rotates by extending or retracting the valve stem of the die-cutting solenoid valve 506.

[0103] Based on any of the above solutions, the die-cutting paper feeding mechanism includes a die-cutting paper feeding motor 501, a die-cutting drive shaft 514, a die-cutting pressure shaft 515, a die-cutting pressure shaft frame tension spring 516, and a die-cutting pressure shaft frame 517. The die-cutting paper feeding motor 501 is fixedly connected to the die-cutting support, and its output shaft is drivenly connected to the die-cutting drive shaft 514. The die-cutting drive shaft 514 is rotatably mounted on the die-cutting support. The die-cutting pressure shaft 515 is rotatably mounted on one end of the die-cutting pressure shaft frame 517. The middle part of the die-cutting pressure shaft frame 517 is hinged to the die-cutting support. The two ends of the die-cutting pressure shaft frame tension spring 516 are respectively connected to the other end of the die-cutting support and the die-cutting pressure shaft frame 517, and apply an elastic force to the die-cutting pressure shaft frame 517 to rotate it until the die-cutting pressure shaft 515 abuts against the die-cutting drive shaft 514.

[0104] The elastic force of the die-cutting pressure roller frame tension spring 516 pulls the die-cutting pressure roller frame 517, causing the die-cutting pressure roller 515 to abut against the die-cutting drive shaft 514, thereby clamping the heat transfer paper 112. The die-cutting paper feeding motor 501 drives the die-cutting drive shaft 514 to rotate, thereby causing the heat transfer paper 112 to move forward or backward during the die-cutting process.

[0105] The camera-positioned die-cutting system 5 also includes a left die-cutting limit switch 502, a right die-cutting limit switch 505, a die-cutting feed motor 507, a reducer 508, and a die-cutting ejector rod 512. The left die-cutting limit switch 502 or the right die-cutting limit switch 505 can be a limit block or a limit sensor. The left die-cutting limit switch 502 and the right die-cutting limit switch 505 are respectively fixed to the left and right ends of the die-cutting bracket. The die-cutting blade module 509 includes a die-cutting blade 513 and a die-cutting blade solenoid valve 510. The die-cutting feed motor 507 drives the synchronous pulley and belt via the reducer 508, thereby driving the die-cutting blade module 509 to move left and right. The movement range of the die-cutting blade module 509 is limited by the left limit switch 502 and the right limit switch 505. The die-cutting blade module 509 controls the up and down movement of the die-cutting blade 513 by controlling the operation of the die-cutting blade solenoid valve 510, and positions the pattern on the adhesive paper by the die-cutting miniature camera 511. The die-cutting ejector rod 512 is fixedly or rotatably mounted on the die-cutting bracket and located in front of the die-cutting drive shaft 514, used to support and guide the heat transfer adhesive paper 112. The controller is communicatively connected to the die-cutting paper feed motor 501 and the die-cutting blade motor 507, and controls their rotation or stop.

[0106] This invention employs a friction roller assembly for feeding the roll material, enabling uninterrupted digital thermal transfer of various film-type roll materials up to 1.5 meters wide. It utilizes a tension-maintaining adhesive paper feeding system and adhesive paper transport system 2 for automatic adhesive paper feeding and automatic deviation correction. A scanning adaptive pressure printing system 3 enables pre-printing cleaning and wide-format printing. An automatic ribbon cartridge changing system 4 enables automatic color changing. A paper cutting mechanism enables single-sheet cutting. A camera-positioned die-cutting system 5 enables die-cutting. The machine boasts advantages such as high integration, simple transmission, low cost, no waste of adhesive paper or ribbon, and multi-color digital printing capabilities, and is widely adaptable to roll-to-roll and roll-to-sheet operations.

[0107] The working principle of a wide-format thermal transfer digital printer is as follows:

[0108] 1. Maintain overall tension of the adhesive tape: such as Figures 1-4 As shown, the overall adhesive paper is first applied. The feed roll 116 is placed on the adhesive base 107 of the feed roll 108 on both sides. The feed motor 118 drives the feed roller 117 to rotate through the synchronous belt. The adhesive paper passes through the two feed rollers 117 and winds around to the top of the front lower roller 215. The front upper pressure roller 205 presses down on the heat transfer adhesive paper 112. The heat transfer adhesive paper 112 then passes through the feed pressure plate 204 and the printing substrate 203, and then passes between the correction pressure roller 212 and the left printing paper feed roller 218 and the right printing paper feed roller 219. Finally, it passes through the paper cutting mechanism.

[0109] The tension of the heat transfer paper 112 before printing is ensured by the weight of the heat transfer paper 112 itself.

[0110] After printing begins, the left printing paper feed motor 210 drives the left printing paper feed roller 218, and the right printing paper feed motor 202 drives the right printing paper feed roller 219, propelling the thermal transfer paper 112 forward. The front feed motor 206 drives the front lower roller 215, which, in conjunction with the front upper pressure roller 205, performs a stall action, providing resistance to ensure smooth paper feeding and constant tension. Additionally, the side pressure paper motor 216 drives a cam mechanism to raise and lower the printing side pressure head 208. During printing, the printing side pressure head 208 lowers and presses down on the side of the paper, causing the printing mechanism 306 to move laterally. The print head 322 scans and prints over the printing substrate 203, thus offsetting the lateral force on the thermal transfer paper 112 and maintaining its overall tension.

[0111] 2. Correction during tape feeding process: such as Figures 2-4As shown, the adhesive paper is first applied to the entire surface. As mentioned earlier, after printing, the paper continues to be fed forward. The edge distance of the heat transfer adhesive paper 112 is measured by the side ultrasonic sensor 217. The left printing paper feed motor 210 drives the left printing paper feed roller 218, and the right printing paper feed motor 202 drives the right printing paper feed roller 219, creating a speed difference between the left and right sides of the paper feed for correction, thereby achieving correction during the adhesive paper feeding process. Subsequently, the paper continues to pass through the paper cutting mechanism. The cutter motor 209 drives the paper cutter 211 to move left and right within the cutter motion guide rail 214 via a synchronous belt to cut the paper.

[0112] 3. Multi-color printing and precise color registration: such as Figures 3-19 As shown, the overall adhesive paper is first applied. As mentioned earlier, the side paper pressing motor 216 drives the cam mechanism to raise and lower the printing side paper pressing head 208. During printing, the printing side paper pressing head 208 lowers and presses down on the side of the heat transfer adhesive paper 112. The print head horizontal motor 301 drives the print head horizontal lead screw 302 to rotate via a synchronous belt, thereby realizing the horizontal movement of the printing mechanism 306. First, the printing mechanism 306 moves to the position of the ribbon cartridge 314 corresponding to the desired color. The ribbon cartridge changing mechanism 307 operates to take out the ribbon cartridge 314 corresponding to the desired color. The ribbon cartridge positioning micro switch 406 senses that the ribbon cartridge 314 is in position, and the horizontal movement of the printing mechanism 306 moves to the printing start position (left side). The print head 322 lowers, and the print head through-type linear stepper motor 320 precisely rotates to drive the print head 322 to the precise position. The print head 322 is connected to the print head fixing plate 321 by a soft connection of the print head buffer spring 323. There is vertical floating space during printing, and the printing pressure range is controlled by the spring force. This achieves an adaptive printing pressure process. Simultaneously, the print cleaning motor 310, via a four-bar linkage, lowers the cleaning adhesive roller 311 and the cleaning dip roller 312, cleaning the thermal transfer adhesive paper 112 concurrently with printing. The print head 322 scans the thermal transfer adhesive paper 112 printed on the print substrate 203 until the printing mechanism 306 moves laterally to the printing end position (right side). At the same time, the print cleaning motor 310, via the four-bar linkage, raises the cleaning adhesive roller 311 and the cleaning dip roller 312, completing the printing of the first color.

[0113] The printing mechanism 306 moves to the storage position of the first color corresponding ribbon cartridge 314 in the ribbon cartridge library 402. The ribbon cartridge changing mechanism 307 operates to return the first color corresponding ribbon cartridge 314. Then, the printing mechanism 306 moves to the desired position of the second color corresponding ribbon cartridge 314, retrieves the second color ribbon cartridge 314, repeats the printing process, and returns the ribbon cartridge 314. This process of retrieving, printing, and returning cartridges is repeated until a section of printing is completed. Then, the edge distance of the adhesive paper is measured by the side ultrasonic sensor 217. The left printing paper feed motor 210 drives the left printing paper feed roller 218, and the right printing paper feed motor 202 drives the right printing paper feed roller 219, creating a speed difference between the left and right sides to correct the adhesive paper feed. After the adhesive paper is in place, the printing process continues, thus completing the entire multi-color printing process. Because the adhesive paper tension remains constant throughout the process, the print head movement accuracy is ensured by the servo motor and lead screw, achieving precise color registration.

[0114] 4. Printing ribbon cartridge replacement:

[0115] like Figure 9 , Figure 10 as well as Figures 15-17 As shown, the ribbon cartridge 314 is manually pushed into each storage area of ​​the ribbon cartridge library 402. During this process, the signal bar on the ribbon cartridge 314 pulls up and closes the ribbon cartridge home position micro switch 403. After the ribbon cartridge 314 is pushed into place, the ribbon cartridge home position micro switch 403 is pulled down, and the ribbon cartridge 314 is manually installed in place. At this point, the system is ready for operation.

[0116] When the printer is powered on, the system issues a ribbon cartridge loading command. In the ribbon cartridge changing mechanism 307, the infeed motor 409 drives the infeed D-type dial 404 to rotate, and the ribbon cartridge 314 begins to feed towards the printing mechanism 306. Simultaneously, the ribbon cartridge positioning microswitch 406 pulls up and closes, transmitting a feed signal. The eject motor 410 drives the eject circular dial 405 to move. When the ribbon cartridge home position microswitch 403 pulls down, it indicates that the ribbon cartridge 314 has entered the printing mechanism 306. At the same time, the ribbon cartridge positioning microswitch 406 in the printing mechanism 306 pulls up, and the take-up shaft 3143 and unwind shaft 3144 of the ribbon cartridge 314 engage with the ribbon cartridge guide shaft 315. Once the ribbon cartridge 314 is in place, the ribbon cartridge positioning microswitch 406 pulls down. Simultaneously, in the printing mechanism 306, the protruding teeth on the take-up shaft 3143 and the unwind shaft 3144 respectively engage with the grooves of the ribbon take-up pulley 317 and the ribbon unwind pulley. At the same time, the cartridge loading motor 409 drives the cartridge loading D-type dial 404 to rotate, ensuring that the plane of the cartridge loading D-type dial 404 is horizontal and facing downwards, completing its movement. The ribbon cartridge loading is complete. The ribbon cartridge unloading is the reverse motion of loading and will not be described further.

[0117] 5. The complex die-cutting process after printing and when the adhesive tape is dispensed:

[0118] like Figure 20 and Figure 21 As shown, after the thermal transfer adhesive paper 112 is printed by the scanning adaptive pressure printing system 3, the cutter motor 209 drives the paper cutter 211 to move laterally to cut the paper via the synchronous belt. After the printed part of the adhesive paper is cut off, it enters the camera positioning die-cutting system 5.

[0119] The die-cutting paper feed motor 501 drives the die-cutting drive shaft 514, which, in conjunction with the die-cutting pressure shaft 515, drives the heat transfer adhesive paper 112 to move back and forth. The die-cutting blade motor 507 drives the synchronous pulley and belt through the reducer 508, thereby driving the die-cutting blade module 509 to move left and right. The pressure of the die-cutting pressure shaft 515 on the heat transfer adhesive paper 112 is ensured by the die-cutting pressure shaft frame tension spring 516 pulling the die-cutting pressure shaft frame 517. The position of the die-cutting blade is limited by the die-cutting left limit switch 502 and the die-cutting right limit switch 505. The position of the pattern on the adhesive paper is located by the die-cutting miniature camera 511. The die-cutting blade module 509 controls the operation of the die-cutting blade solenoid valve 510 to make the die-cutting blade 513 move up and down, performing precise and complex die-cutting on the pattern on the adhesive paper.

[0120] When the adhesive paper needs to retract during die-cutting, to avoid the paper cutting mechanism, the valve stem of the die-cutting switch solenoid valve 506 moves up and down, driving the die-cutting guide block 504 to rotate a certain angle via a four-bar linkage. The heat transfer adhesive paper 112 retracts, passing through the die-cutting guide block 504 downwards (e.g., ...). Figure 21 As shown, the position of the heat transfer paper 112 changes from the position indicated by the dotted line to the position indicated by the dashed line.

[0121] In the description of this invention, it should be noted that the terms "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0122] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0123] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0124] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0125] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0126] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wide-format thermal transfer digital printer, characterized in that, The system includes a frame and tension holding adhesive paper system (1), an adhesive paper transport system (2), a scanning adaptive pressure printing system (3), an automatic ribbon cartridge changing system (4), and a camera positioning die-cutting system (5). The adhesive paper transport system (2) and the camera positioning die-cutting system (5) are arranged sequentially along the adhesive paper forward direction and installed above the frame and tension holding adhesive paper system (1). The scanning adaptive pressure printing system (3) is installed above the adhesive paper transport system (2). The automatic ribbon cartridge changing system (4) is installed at the front or rear end of the scanning adaptive pressure printing system (3) and is used to replace the ribbon cartridge (314). The adhesive tape transport system (2) includes a paper feeding mechanism, a paper cutting mechanism, and an adhesive tape transport base (201). The paper feeding mechanism includes a front lower roller (215), a front upper pressure roller (205), a feed pressure plate (204), and a printing substrate (203). The adhesive tape transport base (201) is fixed to the frame and the tension-maintaining adhesive tape system (1). The front lower roller (215) and the front upper pressure roller (205) are mounted close together and can rotate. At the rear end of the adhesive tape transport base (201), the feeding pressure plate (204) is vertically slidably mounted on the adhesive tape transport base (201), the printing plate (203) is fixed on the adhesive tape transport base (201), the front lower roller (215), the feeding pressure plate (204) and the printing plate (203) are arranged sequentially along the adhesive tape forward direction, and the paper cutting mechanism is installed at the front end of the adhesive tape transport base (201); The adhesive paper transport system (2) further includes a printing side paper pressing head (208) and a side paper pressing motor (216). The side paper pressing motor (216) is fixedly connected to the adhesive paper transport base (201), and its output shaft is fixed with a cam or eccentric wheel. The printing side paper pressing head (208) can be vertically slidably installed on the adhesive paper transport base (201) and is used to press or release the side of the heat transfer adhesive paper (112). The outer wall of the printing side paper pressing head (208) has a frame structure, and the cam or eccentric wheel of the side paper pressing motor (216) is located inside the frame structure. The frame and tension-maintaining adhesive paper system (1) includes a frame, a feeding roll (116), a feeding roller (117), a feeding motor (118), a discharging roll (111), a discharging roller (106), and a take-up motor (113). There are two feeding rollers (117), which are rotatably mounted side by side in the middle of the frame. The feeding motor (118) is fixedly connected to the frame and is driven by the two feeding rollers (117). The feeding roll (116) is placed on the two feeding rollers (117). There are two feeding rollers (106), which are rotatably mounted side by side in the middle of the frame. The receiving motor (113) is fixedly connected to the frame and is drivenly connected to the two feeding rollers (106) respectively. The feeding roll (111) is placed on the two feeding rollers (106). The scanning adaptive pressure printing system (3) includes a printing mechanism (306), which includes a printhead housing (308), a ribbon cartridge (314), and a printhead assembly. The printhead housing (308) is slidably mounted above the adhesive tape transport system (2). The ribbon cartridge (314) includes a ribbon cartridge body, a ribbon, a take-up shaft (3143), and an unwind shaft (3144). The take-up shaft (3143) and the unwind shaft (3144) are rotatably mounted in the ribbon cartridge body and are detachably connected to two ribbon cartridge guide shafts (315) installed in the printhead housing (308). The two ends of the ribbon are wound around the take-up shaft (3143) and the unwind shaft (3144), respectively. The ribbon cartridge body has an open ribbon printing area. The middle part of the ribbon is located in the ribbon printing area. The printhead assembly is fixed in the printhead housing (308) and located above the middle part of the ribbon. The automatic carbon tape changing system (4) includes a carbon tape changing mechanism (307) and a carbon tape library (402). The ribbon cartridge library (402) is fixedly connected to the frame and the tension-maintaining adhesive paper system (1) and has multiple storage areas arranged on the left and right, the storage areas being used to store the ribbon cartridges (314). The ribbon cartridge changing mechanism (307) is installed at the front or rear end of the printhead housing (308) and is used to drive the ribbon cartridge (314) into the printhead housing (308) or the storage area. The camera positioning die-cutting system (5) includes a die-cutting bracket, a die-cutting paper feeding mechanism, a die-cutting knife module (509), and a die-cutting miniature camera (511). The die-cutting bracket is fixed on the frame and the tension-holding adhesive paper system (1). The die-cutting paper feeding mechanism is installed on the die-cutting bracket. The die-cutting knife module (509) is slidably connected to the die-cutting bracket. The die-cutting knife module (509) can move back and forth. The die-cutting miniature camera (511) is fixed on the die-cutting knife module (509). The die-cutting paper feeding mechanism includes a die-cutting paper feeding motor (501), a die-cutting drive shaft (514), a die-cutting pressure shaft (515), a die-cutting pressure shaft frame tension spring (516), and a die-cutting pressure shaft frame (517). The die-cutting paper feeding motor (501) is fixedly connected to the die-cutting bracket, and its output shaft is drivenly connected to the die-cutting drive shaft (514). The die-cutting drive shaft (514) is rotatably mounted on the die-cutting bracket. The die-cutting pressure shaft (515) is... 15) Rotatably mounted on one end of the die-cutting pressure roller frame (517), the middle part of the die-cutting pressure roller frame (517) is hinged to the die-cutting bracket, and the two ends of the die-cutting pressure roller frame tension spring (516) are respectively connected to the other end of the die-cutting bracket and the die-cutting pressure roller frame (517), and apply an elastic force to the die-cutting pressure roller frame (517) to rotate it until the die-cutting pressure roller (515) abuts against the die-cutting drive shaft (514).

2. A wide-format thermal transfer digital printer according to claim 1, characterized in that, The adhesive tape transport system (2) further includes a correction mechanism, which includes a correction pressure roller (212), a left printing paper feed roller (218), and a right printing paper feed roller (219). The left printing paper feed roller (218) and the right printing paper feed roller (219) are rotatably mounted on the left and right sides of the adhesive tape transport base (201) and located in front of the printing substrate (203). The correction pressure roller (212) is mounted on the adhesive tape transport base (201) and is in close contact with the left printing paper feed roller (218) and the right printing paper feed roller (219).

3. A wide-format thermal transfer digital printer according to claim 1, characterized in that, The scanning adaptive pressure printing system (3) also includes a cleaning component, which includes a printing cleaning motor (310), a printing cleaning mechanism sheet metal (313), a cleaning mechanism link, cleaning adhesive paper, a cleaning adhesive paper roller (311), and a cleaning sticky roller (312). There are multiple cleaning mechanism links, which are parallel to each other. The two ends of each cleaning mechanism link are respectively hinged to one side of the printing cleaning mechanism sheet metal (313) and the print head housing (308). The printing cleaning motor (310) is fixedly connected to the printing cleaning mechanism sheet metal (313) and is drivenly connected to one of the cleaning mechanism links. The cleaning adhesive paper roller (311) and the cleaning sticky roller (312) are rotatably mounted on the printing cleaning mechanism sheet metal (313). The two ends of the cleaning adhesive paper are respectively wound around the cleaning adhesive paper roller (311) and the cleaning sticky roller (312).

4. A wide-format thermal transfer digital printer according to any one of claims 1-3, characterized in that, The camera positioning die-cutting system (5) further includes a die-cutting steering shaft (503) and a plurality of die-cutting guide blocks (504). The die-cutting steering shaft (503) is rotatably mounted on the die-cutting bracket and arranged in the left-right direction. The die-cutting steering shaft (503) is located on the rear side of the die-cutting blade module (509). The plurality of die-cutting guide blocks (504) are spaced apart along the axial direction of the die-cutting steering shaft (503) and fixedly connected to the die-cutting steering shaft (503). Each die-cutting guide block (504) has a die-cutting guide surface (5041).

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