Double-machine-head color film printing equipment

Abstract

Double-machine-head color film printing equipment relates to the technical field of printing equipment and comprises a machine body, and a discharging mechanism, a printing mechanism and a receiving mechanism which are sequentially arranged on the machine body, the printing mechanism comprises a printing cross beam movably arranged above the printing area in the first direction, a machine head connecting plate movably arranged on the printing cross beam in the second direction, two machine head positioning plates, two printing machine heads and two sets of lifting mechanisms, and a first driving module used for driving the printing cross beam to move in the first direction is arranged on the machine body; the printing cross beam is provided with a second driving module used for driving the machine head connecting plate to move in the second direction. By adopting the technical scheme, the two printing heads are mounted on the same head connecting plate, so that the two printing heads can accurately move in the same plane, and the problems of double-head movement track deviation and large relative position error of double-head color film printing equipment in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of printing equipment technology, and specifically to a dual-head color film printing device. Background Technology

[0002] Color film printing equipment is widely used in industries such as packaging, decoration, and advertising. To improve production efficiency, dual-head models equipped with two independent printheads have emerged in existing technologies. These machines typically mount two printhead systems on the front and rear sides of the printing beam or frame, respectively. Through coordinated or alternating operation of the two heads, they aim to achieve continuous printing of roll materials or simultaneous processing of multiple flat workpieces, thereby improving equipment utilization and output speed.

[0003] However, this "separate front and rear" dual-head structure, because the front and rear printheads belong to two independent mounting planes, means that their respective lateral (X-axis) and longitudinal (Y-axis) motion guides and drive systems are physically independent, making it difficult to establish an absolutely unified motion benchmark. In actual operation, factors such as the stress deformation of the crossbeam, the cumulative assembly tolerances of the two sets of independent guides, and the differences in thermal expansion during dynamic operation will inevitably cause uncompensable systematic deviations and relative position errors in the movement trajectories of the two printheads in the horizontal plane. This makes it difficult to guarantee the relative positional accuracy between the output patterns of the two heads when performing operations requiring high-precision coordination or synchronization. Especially when handling tasks with high-precision requirements such as pattern overprinting, splicing, or color transitions, this error will significantly reduce the quality of the printed product and even lead to an increase in the scrap rate. Summary of the Invention

[0004] The purpose of this application is to provide a dual-head color film printing device to solve the problems of large deviation in the movement trajectory of the two heads and large relative position error in the existing dual-head color film printing devices.

[0005] The technical solution adopted in this invention is: a dual-head color film printing device, including a machine body, and a feeding mechanism, a printing mechanism and a receiving mechanism arranged sequentially on the machine body. The machine body is provided with a printing area. The feeding mechanism is used to transport the printing medium to the printing area. The printing mechanism is used to perform printing operations on the printing medium in the printing area. The receiving mechanism is used to rewind the printed printing medium. The printing mechanism includes a printing beam movably disposed above the printing area along a first direction, a print head connecting plate movably disposed on the printing beam along a second direction, two print head positioning plates, two print heads, and two sets of lifting mechanisms. The first direction and the second direction are perpendicular to each other and parallel to the horizontal plane. The two print head positioning plates are respectively fixed on both sides of the print head connecting plate relative to the first direction. The two print heads are respectively mounted on the corresponding print head positioning plates through the lifting mechanisms. The two sets of lifting mechanisms are used to drive the two print heads to rise and fall synchronously or independently relative to the print head connecting plate. The machine body is provided with a first drive module for driving the printing crossbeam to move in a first direction, and the printing crossbeam is provided with a second drive module for driving the head connecting plate to move in a second direction. Optionally, the number of the first drive modules is two sets, and the two sets of the first drive modules are symmetrically arranged at both ends of the printed crossbeam relative to the second direction; The first drive module includes a first lead screw rotatably mounted on the machine body, a first nut seat sleeved on the first lead screw, a first guide rail fixedly mounted on one side of the first lead screw, a first connecting block mounted on the first nut seat for sliding cooperation with the first guide rail, and a first drive motor. The first lead screw and the first guide rail are arranged along a first direction. One end of the printing crossbeam is fixedly connected to the first connecting block. The first drive motor is used to drive the first lead screw to rotate, so as to drive the first nut seat, the first connecting block and the printing crossbeam to move along the first direction.

[0006] Optionally, the second drive module includes a linear motor fixedly mounted on the printing beam. The linear motor includes a stator and a mover. The stator of the linear motor is arranged along a second direction, and the head mounting plate is fixedly mounted on the mover of the linear motor.

[0007] Optionally, the lifting mechanism includes a lifting screw vertically mounted on the print head, a lifting nut sleeved on the lifting screw, a lifting guide rail mounted on the print head, a lifting slider mounted on the print head positioning plate for cooperating with the lifting guide rail, and a lifting motor. The lifting screw and the lifting guide rail are both located on the side of the print head facing the print head positioning plate. The lifting nut is fixedly connected to the print head positioning plate. The lifting motor is used to drive the lifting screw to rotate, so as to drive the lifting nut and the print head to move vertically up and down relative to the print head positioning plate.

[0008] Optionally, waste ink collection trays are provided on both sides of the printing beam near the feeding mechanism. The two waste ink collection trays correspond one-to-one with the two print heads. The waste ink collection trays are used to collect excess ink generated when the print head presses ink.

[0009] Optionally, a slide groove is provided through the printing crossbeam along the first direction, the head connecting plate is located in the slide groove and both sides of it extend out of the slide groove, and hydraulic buffers are provided at both ends of the slide groove for abutting against the head connecting plate.

[0010] Optionally, a feeding guide mechanism is provided between the feeding mechanism and the printing area, the feeding guide mechanism being used to stably guide the printing medium released by the feeding mechanism to the printing area; A receiving guide mechanism is provided between the receiving mechanism and the printing area. The receiving guide mechanism is used to stably guide the printing media that has been printed in the printing area to the receiving mechanism.

[0011] Optionally, the feeding guide mechanism includes a feeding guide shaft, a feeding drive shaft, a feeding coating roller, a pressing coating roller, a pressing drive shaft, and a dust removal roller disposed between the feeding mechanism and the printing area. The feeding drive shaft and the feeding coating roller are arranged side by side on the side of the machine body near the feeding mechanism. The feeding drive roller and the feeding coating roller cooperate to form a feeding gap for the printing medium to pass through. The pressing coating roller and the pressing drive shaft are arranged side by side at the feeding end of the printing area. The pressing coating roller and the pressing drive shaft cooperate to form a pressing gap for the printing medium to pass through. The dust removal roller is arranged opposite to the feeding coating roller and is located below the pressing coating roller and the pressing drive shaft. The printing medium released by the feeding mechanism passes through the feeding guide shaft, the feeding gap, the dust removal roller, and the pressing gap in sequence before entering the printing area.

[0012] Optionally, the receiving guide mechanism includes a discharge drive shaft, a first discharge guide shaft, a second discharge guide shaft, a third discharge guide shaft, a fourth discharge guide shaft, and a fifth discharge guide shaft disposed between the printing area and the receiving mechanism. The discharge drive shaft and the first discharge guide shaft are arranged side by side at the discharge end of the printing area. The discharge drive shaft and the first discharge guide shaft cooperate to form a discharge gap for the printing medium to pass through. The second discharge guide shaft is located directly below the first discharge guide shaft. The third discharge guide shaft is located on the same horizontal plane as the second discharge guide shaft and is located on the side of the second discharge guide shaft facing the feeding mechanism. The fourth discharge guide shaft is located above the third discharge guide shaft. The fifth discharge guide shaft is located on the same horizontal plane as the fourth discharge guide shaft and is located on the side of the fourth discharge guide shaft facing the receiving mechanism. The printing medium that has completed printing in the printing area passes sequentially through the discharge end of the printing area, the discharge gap, the second discharge guide shaft, the third discharge guide shaft, the fourth discharge guide shaft, and the fifth discharge guide shaft before being wound into the receiving mechanism.

[0013] Optionally, a control mechanism is also included, which is electrically connected to the feeding mechanism, printing mechanism, receiving mechanism, first drive module and second drive module. The control mechanism is used to control the feeding mechanism, printing mechanism, receiving mechanism, first drive module and second drive module to work together.

[0014] After adopting the above technical solution, the beneficial effects of the present invention are as follows: This application provides a dual-head color film printing device, including a body, a feeding mechanism, a printing mechanism, and a receiving mechanism. By mounting two printheads on the same printhead connecting plate, and allowing the two printheads to rise and fall synchronously or independently relative to the connecting plate, and with the printing beam and the printhead connecting plate driven by a first drive module and a second drive module respectively, moving along mutually perpendicular first and second directions, the two printheads can move precisely within the same plane. This establishes a unified motion reference and effectively eliminates motion trajectory deviations and relative position errors caused by factors such as beam deformation under stress, accumulated tolerances in guide rail assembly, and differences in thermal expansion during dynamic operation. In practical applications, when the device performs tasks requiring high-precision collaborative or synchronous operation between the two printheads, such as high-precision pattern overprinting, splicing, or color transitions, the two printheads can print precisely according to a preset trajectory and relative position, improving the printing accuracy of both printheads and thus ensuring the quality of the printed product. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram illustrating the cooperative relationship between the machine body, feeding mechanism, printing area, printing mechanism and receiving mechanism in this embodiment; Figure 3 This is a diagram illustrating the printing mechanism in this embodiment; Figure 4 This is a diagram illustrating the first drive module in this embodiment; Figure 5 This is a schematic diagram illustrating the cooperation relationship between the print head, lifting mechanism, print head connecting plate and print head positioning plate in this embodiment; Figure 6 This is a schematic diagram illustrating the cooperation relationship between the feeding mechanism, the feeding guide mechanism, the receiving guide mechanism, and the receiving mechanism in this embodiment; Figure 7 This is a schematic diagram illustrating the cooperative relationship between the feeding mechanism, the feeding guide mechanism, and the printing area in this embodiment; Figure 8 This is a schematic diagram illustrating the cooperative relationship between the printing area, the receiving guide mechanism, and the receiving mechanism in this embodiment.

[0017] Explanation of reference numerals in the attached drawings: 10. Machine body; 110. Printing area; 111. Feeding end; 112. Discharge end; 20. Feeding mechanism; 30. Printing mechanism; 31. Printing beam; 311. Waste ink collection tray; 312. Slide groove; 313. Hydraulic damper; 32. Print head connecting plate; 33. Print head positioning plate; 34. Print head; 35. Lifting mechanism; 351. Lifting screw; 352. Lifting nut; 353. Lifting guide rail; 354. Lifting slider; 355. Lifting motor; 40. Receiving mechanism; 50. First drive module; 51. First screw; 52. First nut seat; 53. First guide rail; 54. First connecting block 55. First drive motor; 61. Linear motor; 611. Stator; 612. Mover; 70. Feeding guide mechanism; 701. Feeding gap; 702. Pressing gap; 71. Feeding guide shaft; 72. Feeding drive shaft; 73. Feeding rubber-coated roller; 74. Pressing rubber-coated roller; 75. Pressing drive shaft; 76. Dust removal roller; 77. Static bar; 78. Encoding wheel assembly; 80. Discharge guide mechanism; 801. Discharge gap; 81. Discharge drive shaft; 82. First discharge guide shaft; 83. Second discharge guide shaft; 84. Third discharge guide shaft; 85. Fourth discharge guide shaft; 86. Fifth discharge guide shaft; 90. Control mechanism. Detailed Implementation

[0018] The following will refer to the appendices in the embodiments of the present invention. Figures 1-8 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0021] This embodiment provides a dual-head color film printing device, referring to... Figures 1-8 The device includes a body 10, and a feeding mechanism 20, a printing mechanism 30 and a receiving mechanism 40 arranged sequentially on the body 10. The body 10 is provided with a printing area 110. The feeding mechanism 20 is used to transport the printing medium to the printing area 110. The printing mechanism 30 is used to perform printing operations on the printing medium in the printing area 110. The receiving mechanism 40 is used to rewind the printed medium after printing. The printing mechanism 30 includes a printing beam 31 movably disposed above the printing area 110 along a first direction, a head connecting plate 32 movably disposed on the printing beam 31 along a second direction, two head positioning plates 33, two printing heads 34, and two sets of lifting mechanisms 35. The first direction and the second direction are perpendicular to each other and parallel to the horizontal plane. The two head positioning plates 33 are respectively fixed on both sides of the head connecting plate 32 relative to the first direction. The two printing heads 34 are respectively mounted on the corresponding head positioning plates 33 through the lifting mechanisms 35. The two sets of lifting mechanisms 35 are used to drive the two printing heads 34 to rise and fall synchronously or independently relative to the head connecting plate 32. The machine body 10 is provided with a first drive module 50 for driving the printing crossbeam 31 to move in a first direction, and the printing crossbeam 31 is provided with a second drive module for driving the printing head connecting plate 32 to move in a second direction.

[0022] In this embodiment, the first direction is the Y-axis direction (the width direction of the body 10), the second direction is the X-axis direction (the length direction of the body 10), and the horizontal plane is the working plane where the body 10 is located.

[0023] By mounting two printheads 34 onto the two printhead positioning plates 33 of the printhead connecting plate 32, and simultaneously driving the printing crossbeam 31 to move along a first direction via the first drive module 50 and the printhead connecting plate 32 to move along a second direction via the second drive module, precise movement of the two printheads 34 in the horizontal plane is achieved. This establishes a unified motion reference, significantly improving the printing accuracy of the two printheads 34 and effectively eliminating motion trajectory deviations and relative position errors caused by factors such as crossbeam deformation under stress, cumulative tolerances in guide rail assembly, and differences in thermal expansion during dynamic operation. Compared to existing dual-head printing equipment, the dual-head color film printing equipment provided in this application allows the two printheads 34 to print precisely according to a preset trajectory and relative position when high-precision collaborative or synchronous operation of the two printheads is required. This ensures the absolute accuracy of the printing surface of the two printheads 34, thereby guaranteeing the quality of the printed product.

[0024] Furthermore, there are two sets of first drive modules 50, which are symmetrically arranged at both ends of the printing beam 31 relative to the second direction. The first drive module 50 includes a first lead screw 51 rotatably mounted on the machine body 10, a first nut seat 52 sleeved on the first lead screw 51, a first guide rail 53 fixedly mounted on one side of the first lead screw 51, a first connecting block 54 mounted on the first nut seat 52 for sliding cooperation with the first guide rail 53, and a first drive motor 55. The first lead screw 51 and the first guide rail 53 are arranged along a first direction. One end of the printing beam 31 is fixedly connected to the first connecting block 54. The first drive motor 55 is used to drive the first lead screw 51 to rotate, so as to drive the first nut seat 52, the first connecting block 54 and the printing beam 31 to move along the first direction.

[0025] Understandably, when it is necessary to drive the printing beam 31 to move along the first direction, the first drive motor 55 drives the first lead screw 51 to rotate. Since the first nut seat 52 is sleeved on the first lead screw 51, and the first connecting block 54 on the first nut seat 52 is slidably engaged with the first guide rail 53, the rotation of the first lead screw 51 will drive the first nut seat 52 to move along the first direction, thereby driving the printing beam 31, which is fixedly connected to the first connecting block 54, to move along the first direction. The two sets of first drive modules 50 work at the same time, so that the printing beam 31 can move stably relative to the machine body 10 along the first direction.

[0026] Furthermore, the second drive module includes a linear motor 61 fixedly mounted on the printing beam 31. The linear motor 61 includes a stator 611 and a mover 612. The stator 611 of the linear motor 61 is arranged along the second direction, and the head connecting plate 32 is fixedly mounted on the mover 612 of the linear motor 61.

[0027] Understandably, when it is necessary to drive the two printheads 34 to move synchronously along the second direction, the linear motor 61 is activated, causing the mover 612 of the linear motor 61 to move linearly relative to the stator 611 along the second direction. Since the printhead mounting plate is fixed on the mover 612 of the linear motor 61, the movement of the mover 612 will drive the printhead mounting plate and the two printheads 34 mounted on the printhead mounting plate to move synchronously along the second direction, making the movement of the two printheads 34 in the second direction more precise and stable, further improving printing accuracy. At the same time, because the linear motor 61 has the characteristics of high response speed and high precision, it can meet the needs of high-precision printing jobs. In practical applications, when it is necessary to adjust the position of the two printheads 34 in the second direction, it can be achieved simply by controlling the movement of the mover 612 of the linear motor 61, which is simple to operate and highly efficient.

[0028] Furthermore, the lifting mechanism 35 includes a lifting screw 351 vertically mounted on the print head 34, a lifting nut 352 sleeved on the lifting screw 351, a lifting guide rail 353 mounted on the print head 34, a lifting slider 354 mounted on the print head positioning plate 33 for cooperating with the lifting guide rail 353, and a lifting motor 355. The lifting screw 351 and the lifting guide rail 353 are both located on the side of the print head 34 facing the print head positioning plate 33. The lifting nut 352 is fixedly connected to the print head positioning plate 33. The lifting motor 355 is used to drive the lifting screw 351 to rotate, so as to drive the lifting nut 352 and the print head 34 to move vertically up and down relative to the print head positioning plate 33.

[0029] Understandably, when the vertical position of the print head 34 needs to be adjusted, the lifting motor 355 is activated. The lifting motor 355 drives the lifting screw 351 to rotate. Since the lifting nut 352 is fixedly connected to the print head positioning plate 33 and is sleeved on the lifting screw 351, and the lifting guide rail 353 on the print head 34 slides with the lifting slider 354, the rotation of the lifting screw 351 will cause the lifting nut 352 to move vertically along the lifting screw 351, thereby causing the print head 34 to rise and fall vertically relative to the print head positioning plate 33. Through the independent or synchronous operation of the two sets of lifting mechanisms 35, precise control of the two print heads 34 in the vertical direction can be achieved. This not only improves the positioning accuracy of the print head 34 but also enables the equipment to adapt to the printing needs of media with different thicknesses, enhancing the versatility and flexibility of the equipment.

[0030] Furthermore, waste ink collection trays 311 are provided on both sides of the printing beam 31 near the feeding mechanism 20. The two waste ink collection trays 311 correspond one-to-one with the two printer heads 34. The waste ink collection trays 311 are used to collect excess ink generated when the print head 34 presses ink.

[0031] It should be noted that before printing, the print head 34 typically performs an ink pressing operation, where the print head 34 ejects ink to wet and clean the print head, ensuring proper ink output during subsequent printing and preventing print quality issues caused by dryness or clogging. During this process, excess ink is generated. If this ink drips indiscriminately, it can contaminate the printing equipment's working environment and potentially contaminate the printing media, affecting the quality of the printed product. Therefore, in this embodiment, waste ink collection trays 311 are provided on both sides of the printing beam 31 near the feeding mechanism 20, with each waste ink collection tray 311 corresponding to one of the two print heads 34. When the print head 34 performs the ink pressing operation, the excess ink drips into the corresponding waste ink collection tray 311, effectively preventing indiscriminate ink dripping and ensuring a clean working environment and high-quality printed products. Simultaneously, the waste ink collection trays 311 facilitate centralized handling of excess ink by staff, improving work efficiency.

[0032] Furthermore, a slide groove 312 is provided through the printing beam 31 along the first direction, the head connecting plate 32 is located inside the slide groove 312 and both sides of it extend out of the slide groove 312, and both ends of the slide groove 312 are provided with hydraulic buffers 313 for abutting against the head connecting plate 32.

[0033] Understandably, the hydraulic damper 313 acts as a buffer when the printhead connecting plate 32 moves to both ends of the slide 312, effectively reducing the collision force between the printhead connecting plate 32 and the ends of the slide 312, reducing vibration and noise caused by the collision, and extending the service life of the equipment. At the same time, this buffering effect also ensures the smoothness of the printhead connecting plate 32's movement, thereby improving the positioning accuracy of the printhead 34 during the printing process and ensuring print quality.

[0034] Furthermore, a feeding guide mechanism 70 is provided between the feeding mechanism 20 and the printing area 110. The feeding guide mechanism 70 is used to stably guide the printing medium released by the feeding mechanism 20 to the printing area 110. A receiving guide mechanism is provided between the receiving mechanism 40 and the printing area 110. The receiving guide mechanism is used to stably guide the printing media that has been printed in the printing area 110 to the receiving mechanism 40.

[0035] Understandably, the feeding guide mechanism 70 and the receiving guide mechanism ensure the stability and accuracy of the printing media during transmission. After being released from the discharging mechanism 20, the printing media is precisely guided by the feeding guide mechanism 70 to smoothly enter the printing area 110, avoiding printing misalignment or quality degradation caused by media offset or jitter. Similarly, the receiving guide mechanism smoothly guides the printed media to the receiving mechanism 40, ensuring neat and orderly receiving, further improving the efficiency of the entire printing process and the quality of the printed product. More importantly, the feeding and discharging paths in this application also avoid the first drive module 50, preventing interference between the printing media and the first drive module 50 during transmission, ensuring smooth printing media transmission and stable equipment operation.

[0036] Furthermore, the feeding guide mechanism 70 includes a feeding guide shaft 71, a feeding drive shaft 72, a feeding rubber-coating roller 73, a pressing rubber-coating roller 74, a pressing drive shaft 75, and a dust removal roller 76, all located between the unloading mechanism 20 and the printing area 110. The feeding drive shaft 72 and the feeding rubber-coating roller 73 are arranged side-by-side on the side of the machine body 10 near the unloading mechanism 20. The feeding drive roller and the feeding rubber-coating roller 73 cooperate to form a feeding gap 701 for the printing medium to pass through. The pressing rubber-coating roller 74... The feeding roller 74 and the feeding roller 75 are arranged side by side at the feed end 111 of the printing area 110. The feeding roller and the feeding roller 75 cooperate to form a feeding gap 702 for the printing medium to pass through. The dust removal roller 76 is arranged opposite to the feeding roller 73 and is located below the feeding roller 74 and the feeding roller 75. The printing medium released by the feeding mechanism 20 passes through the feeding guide shaft 71, the feeding gap 701, the dust removal roller 76, and the feeding gap 702 in sequence before entering the printing area 110.

[0037] Understandably, the feed guide shaft 71 serves to initially guide and support the printing media, ensuring that the media does not shift or sag during transport. The feed gap 701, through the cooperation of the feed drive shaft 72 and the feed coating roller 73, provides initial positioning and clamping of the printing media, preventing loosening or wrinkling during transport. The dust removal roller 76 effectively removes dust and impurities from the surface of the printing media, preventing these impurities from damaging the print head or affecting print quality during printing. Finally, the pressure gap 702, through the cooperation of the pressure coating roller 74 and the pressure drive shaft 75, further clamps and positions the printing media, ensuring that the media remains flat and stable when entering the printing area 110.

[0038] In addition, the feeding guide mechanism 70 also includes an electrostatic bar 77 disposed between the dust removal roller 76, the pressure coating roller 74, and the pressure drive shaft 75. The electrostatic bar 77 is used to remove static electricity from the surface of the printing media. During the transmission of the printing media, static electricity is easily generated on the surface of the media due to friction and other reasons. The presence of static electricity may not only attract dust and impurities from the air, affecting print quality, but may also cause problems such as media adhesion or displacement during transmission. Therefore, this embodiment adds an electrostatic bar 77 to the feeding guide mechanism 70. The electrostatic bar 77 can effectively remove static electricity from the surface of the printing media, ensuring the stability of the media and print quality during transmission. At the same time, the setting of the electrostatic bar 77 also further improves the overall performance of the equipment, making the dual-head color film printing equipment more adaptable to various complex printing environments and needs.

[0039] Furthermore, the receiving guide mechanism includes a discharge drive shaft 81, a first discharge guide shaft 82, a second discharge guide shaft 83, a third discharge guide shaft 84, a fourth discharge guide shaft 85, and a fifth discharge guide shaft 86 located between the printing area 110 and the receiving mechanism 40. The discharge drive shaft 81 and the first discharge guide shaft 82 are arranged side by side at the discharge end 112 of the printing area 110, and the discharge drive shaft 81 and the first discharge guide shaft 82 cooperate to form a discharge gap 801 for the printing medium to pass through. The second discharge guide shaft 83 is located directly below the first discharge guide shaft 82, and the third discharge guide shaft 84 is located below the second discharge guide shaft 85. The guide shaft 83 is located on the same horizontal plane and on the side of the second discharge guide shaft 83 facing the feeding mechanism 20. The fourth discharge guide shaft 85 is located directly above the third discharge guide shaft 84. The fifth discharge guide shaft 86 is located on the same horizontal plane as the fourth discharge guide shaft 85 and on the side of the fourth discharge guide shaft 85 facing the receiving mechanism 40. The printing medium that has been printed in the printing area 110 passes through the discharge end 112 of the printing area 110, the discharge gap 801, the second discharge guide shaft 83, the third discharge guide shaft 84, the fourth discharge guide shaft 85 and the fifth discharge guide shaft 86 in sequence and is then wound into the receiving mechanism 40.

[0040] It should be noted that at least two baffles are provided on the second discharge guide shaft 83, the third discharge guide shaft 84, the fourth discharge guide shaft 85 and the fifth extraction guide shaft. The two baffles work together to limit the two sides of the printing medium in the width direction, preventing the printing medium from deviating during the transmission process and ensuring that the printing medium can be accurately and stably wound into the take-up mechanism 40.

[0041] Understandably, the feed drive shaft 81 is driven by a power unit. When the printing medium passes through the feed gap 801, the feed drive shaft 81 actively moves the printing medium, ensuring that the printing medium is output smoothly and steadily from the printing area 110, avoiding any jamming or stagnation. The first feed guide shaft 82 plays an auxiliary guiding role, working with the feed drive shaft 81 to precisely control the transmission direction and position of the printing medium. The second feed guide shaft 83 guides the printing medium downwards, changing its transmission path to avoid the first drive module 50. The third and fourth feed guide shafts 84 and 85 work together to further adjust the direction of the printing medium, ensuring that it is accurately transmitted along the predetermined route. The fifth feed guide shaft 86 smoothly guides the printing medium to the take-up mechanism 40, ensuring that the printing medium is neatly and orderly wound up. Through the coordinated work of this series of feed guide shafts, efficient and stable transmission of the printing medium from the printing area 110 to the take-up mechanism 40 is achieved without interference with the first drive module 50.

[0042] In addition, to achieve precise feeding and receiving, both the feeding guide mechanism 70 and the discharging guide mechanism 80 include an encoding wheel assembly 78. The encoding wheel assembly 78 of the feeding guide mechanism 70 is located at the dust removal roller 76, and the encoding wheel assembly 78 of the discharging guide mechanism 80 is located at the fourth discharging guide shaft 85. Through the setting of the encoding wheel assembly 78, the transmission length and speed of the printing medium can be accurately detected, thereby achieving precise control of the feeding and receiving process.

[0043] Furthermore, the dual-head color film printing equipment provided in this embodiment also includes a control mechanism 90. The control mechanism 90 is electrically connected to the feeding mechanism 20, the printing mechanism 30, the receiving mechanism 40, the first drive module 50, and the second drive module. The control mechanism 90 is used to control the feeding mechanism 20, the printing mechanism 30, the receiving mechanism 40, the first drive module 50, and the second drive module to work together.

[0044] Understandably, by controlling the feeding mechanism 20, printing mechanism 30, receiving mechanism 40, first drive module 50 and second drive module to work together through the control mechanism 90, the continuity and stability of the entire printing process can be ensured.

[0045] Working Principle: During printing, the control mechanism 90 first controls the feeding mechanism 20 to release the printing medium. Guided by the feeding guide mechanism 70, the printing medium passes sequentially through the feeding guide shaft 71, the feeding gap 701, the dust removal roller 76, and the pressing gap 702, avoiding the first drive module 50 before smoothly entering the printing area 110. At this time, the control mechanism 90 controls the first drive module 50 to drive the printing beam 31 to move along the first direction according to the preset printing parameters, and simultaneously controls the second drive module to drive the two print heads 34 to move synchronously or independently along the second direction, so as to achieve precise movement of the print heads 34 in the horizontal plane. Before printing, the print heads 34 perform an ink pressing operation, and the excess ink will drip into the corresponding waste ink collection tray 311 to prevent ink from dripping randomly. After printing, the control mechanism 90 controls the receiving guide mechanism to stably guide the printed medium in the printing area 110 to the receiving mechanism 40 (again avoiding the first drive module 50), completing the entire printing process.

[0046] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A dual head decal printing apparatus, comprising: The application relates to a printing device, which comprises a machine body (10), a feeding mechanism (20), a printing mechanism (30) and a collecting mechanism (40) arranged on the machine body (10) in sequence, wherein the machine body (10) is provided with a printing area (110), the feeding mechanism (20) is used for conveying a printing medium to the printing area (110), the printing mechanism (30) is used for performing a printing operation on the printing medium in the printing area (110), and the collecting mechanism (40) is used for winding the printing medium after the printing operation. The printing mechanism (30) comprises a printing beam (31) movably arranged above the printing area (110) along a first direction, a head connecting plate (32) movably arranged on the printing beam (31) along a second direction, two head positioning plates (33), two printer heads (34) and two groups of lifting mechanisms (35), the first direction and the second direction are perpendicular and parallel to the horizontal plane, the two head positioning plates (33) are fixed on the two sides of the head connecting plate (32) opposite to the first direction, the two printer heads (34) are installed on the corresponding head positioning plates (33) through the lifting mechanisms (35), and the two groups of lifting mechanisms (35) are used for driving the two printer heads (34) to synchronously or independently lift relative to the head connecting plate (32). The machine body (10) is provided with a first driving module (50) used for driving the printing beam (31) to move along the first direction, and the printing beam (31) is provided with a second driving module used for driving the head connecting plate (32) to move along the second direction.

2. The dual-head decal printing apparatus of claim 1, wherein, The number of the first driving modules (50) is two groups, and the two groups of first driving modules (50) are symmetrically arranged at the two ends of the printing beam (31) opposite to the second direction. The first driving module (50) comprises a first screw rod (51) rotatably arranged on the machine body (10), a first nut seat (52) sleeved on the first screw rod (51), a first guide rail (53) fixed on one side of the first screw rod (51), a first connecting block (54) arranged on the first nut seat (52) and used for slidingly matching with the first guide rail (53), and a first driving motor (55), the first screw rod (51) and the first guide rail (53) are arranged along the first direction, one end of the printing beam (31) is fixedly connected to the first connecting block (54), and the first driving motor (55) is used for driving the first screw rod (51) to rotate, so as to drive the first nut seat (52), the first connecting block (54) and the printing beam (31) to move along the first direction.

3. The dual-head decal printing apparatus of claim 1, wherein, The second driving module comprises a linear motor (61) fixedly arranged on the printing beam (31), the linear motor (61) comprises a stator (611) and a mover (612), the stator (611) of the linear motor (61) is arranged along the second direction, and the head connecting plate (32) is fixedly arranged on the mover (612) of the linear motor (61).

4. The dual-head decal printing apparatus of claim 2, wherein, The lifting mechanism (35) comprises a lifting screw rod (351) vertically arranged on the printer head (34), a lifting nut (352) sleeved on the lifting screw rod (351), a lifting guide rail (353) arranged on the printer head (34), a lifting slider (354) arranged on the head positioning plate (33) and used for cooperating with the lifting guide rail (353), and a lifting motor (355), the lifting screw rod (351) and the lifting guide rail (353) are located on the side of the printer head (34) facing the head positioning plate (33), the lifting nut (352) is fixedly connected to the head positioning plate (33), and the lifting motor (355) is used for driving the lifting screw rod (351) to rotate, so as to drive the lifting nut (352) and the printer head (34) to vertically lift relative to the head positioning plate (33).

5. The dual-head decal printing apparatus of claim 1, wherein, The two sides of the printing beam (31) near one end of the feeding mechanism (20) are each provided with a waste ink collecting disc (311), the two waste ink collecting discs (311) correspond to the two printer heads (34) one by one, and the waste ink collecting disc (311) is used for collecting the excess ink generated when the printer head (34) presses the ink of the nozzle.

6. The dual-head decal printing apparatus of claim 1, wherein, The printing beam (31) is provided with a sliding groove (312) penetrating in the first direction, the head connecting plate (32) is located in the sliding groove (312) and the two sides of the head connecting plate (32) extend out of the sliding groove (312), and the two ends of the sliding groove (312) are each provided with an oil buffer (313) used for abutting against the head connecting plate (32).

7. A dual head decal printing apparatus as defined in claim 1, wherein, The feeding guiding mechanism (70) is arranged between the feeding mechanism (20) and the printing area (110), and is used for stably guiding the printing medium released by the feeding mechanism (20) to the printing area (110). The material collecting mechanism (40) and the printing area (110) are provided with a material collecting guiding mechanism, and the material collecting guiding mechanism is used for stably guiding the printing medium in the printing area (110) to the material collecting mechanism (40).

8. The dual-head decal printing apparatus of claim 7, wherein, The feeding guide mechanism (70) comprises a feeding guide shaft (71), a feeding driving shaft (72), a feeding rubber roller (73), a pressing rubber roller (74), a pressing driving shaft (75) and a dust removing roller (76) arranged between the feeding mechanism (20) and the printing area (110), the feeding driving shaft (72) and the feeding rubber roller (73) are arranged side by side on the side of the machine body (10) close to the feeding mechanism (20), the feeding driving shaft and the feeding rubber roller (73) cooperate to form a feeding gap (701) for the printing medium to pass through, the pressing rubber roller (74) and the pressing driving shaft (75) are arranged side by side at the feeding end (111) of the printing area (110), the pressing rubber roller and the pressing driving shaft (75) cooperate to form a pressing gap (702) for the printing medium to pass through, the dust removing roller (76) is arranged opposite to the feeding rubber roller (73) and below the pressing rubber roller (74) and the pressing driving shaft (75), the printing medium released by the feeding mechanism (20) passes through the feeding guide shaft (71), the feeding gap (701), the dust removing roller (76), the pressing gap (702) in sequence and then enters the printing area (110).

9. The dual-head decal printing apparatus of claim 8, wherein, The feeding guide mechanism (70) comprises a feeding guide shaft (71), a feeding driving shaft (72), a feeding rubber roller (73), a pressing rubber roller (74), a pressing driving shaft (75) and a dust removing roller (76) arranged between the feeding mechanism (20) and the printing area (110), the feeding driving shaft (72) and the feeding rubber roller (73) are arranged side by side on the side of the machine body (10) close to the feeding mechanism (20), the feeding driving shaft and the feeding rubber roller (73) cooperate to form a feeding gap (701) for the printing medium to pass through, the pressing rubber roller (74) and the pressing driving shaft (75) are arranged side by side at the feeding end (111) of the printing area (110), the pressing rubber roller and the pressing driving shaft (75) cooperate to form a pressing gap (702) for the printing medium to pass through, the dust removing roller (76) is arranged opposite to the feeding rubber roller (73) and below the pressing rubber roller (74) and the pressing driving shaft (75), the printing medium released by the feeding mechanism (20) passes through the feeding guide shaft (71), the feeding gap (701), the dust removing roller (76), the pressing gap (702) in sequence and then enters the printing area (110).

10. The dual-head decal printing apparatus of claim 1, wherein, The control mechanism (90) is electrically connected with the discharging mechanism (20), the printing mechanism (30), the collecting mechanism (40), the first driving module (50) and the second driving module, and is used for controlling the discharging mechanism (20), the printing mechanism (30), the collecting mechanism (40), the first driving module (50) and the second driving module to work cooperatively.

Images