A label silk screen printing machine capable of printing on both sides

Abstract

This utility model discloses a label screen printing machine capable of double-sided printing, relating to the technical field of label screen printing machines. The technical solution includes a base with a support plate fixed to the top. Inside the support plate are a label tape unwinding roller, an upper auxiliary roller, an upper flipping roller, a lower flipping roller, a lower auxiliary roller, and a label tape take-up roller. A servo motor is located on one side of the support plate, and label tape is attached to the outside of the label tape unwinding roller. A first label screen printing machine and a second label screen printing machine are located on the other side of the support plate. A printing and drying assembly is inserted inside the support plate. This utility model, through a double drying and intermediate cooling design, rapidly dries the ink through an upper hot air duct after printing on the first side, and cools it through a cold air duct before flipping to prevent material damage. After printing on the second side, it is dried again through a lower hot air duct. This fundamentally solves the problem of smudging caused by undried ink in traditional processes, significantly improving the quality and stability of double-sided printing.

Description

Technical Field

[0001] This utility model relates to the field of label screen printing machine technology, specifically to a label screen printing machine capable of double-sided printing. Background Technology

[0002] As the core equipment for label printing, the label screen printing machine occupies an important position in the label production field due to its advantages of strong adhesion of printed patterns, bright colors, and applicability to various materials (such as plastic, metal, paper, film, etc.). Traditional label screen printing machines are mainly designed for single-sided label printing needs. As the market demands more diverse label functions, double-sided printing labels are widely used in complex product identification scenarios because they can carry more information and improve space utilization. Examples include front and back parameter labeling of electronic components and double-sided graphic display on cosmetic packaging.

[0003] The existing double-sided screen printing process usually involves a unified drying operation after both sides have been printed. Since ink drying takes a certain amount of time, when the second side is printed directly after the first side is completed, the ink on the first side is often not completely dry. This makes it very easy for the undried ink on the first side to come into contact with the relevant parts of the printing equipment during subsequent printing processes, resulting in ink being rubbed off or contaminating other parts, leading to defects such as smudges and blurriness on the product. Utility Model Content

[0004] Therefore, this utility model provides a label screen printing machine capable of double-sided printing, which solves the problem of undried ink being rubbed off or contaminated on other parts during the second side printing by means of a printing drying component.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a label screen printing machine capable of double-sided printing, comprising a base, a support plate fixedly mounted on the top of the base, and a label tape unwinding roller, an upper auxiliary roller, an upper flipping roller, a lower flipping roller, a lower auxiliary roller, and a label tape take-up roller respectively inserted inside the support plate. A servo motor is mounted on one side of the support plate, and a label tape is mounted outside the label tape unwinding roller. A first label screen printing machine and a second label screen printing machine are mounted on the other side of the support plate. A printing and drying assembly is inserted inside the support plate. The device includes a fan housing, an air inlet filter fixedly mounted on one side of the fan housing, a motor mounted outside the fan housing, a rotating shaft inserted inside the fan housing, fan blades fixedly mounted on the outside of the rotating shaft, a cold air duct fixedly connected to one end of the fan housing, a label strip groove opened inside the cold air duct, a connecting pipe fixedly connected to one end of the cold air duct, a flow divider fixedly mounted inside the connecting pipe, two hot air ducts fixedly connected to the outside of the connecting pipe, electric heating wires fixedly connected inside each of the two hot air ducts, and an air outlet screen fixedly connected to one end of each of the two hot air ducts.

[0006] Preferably, one end of each of the label tape unwinding roller, upper auxiliary roller, upper flipping roller, lower flipping roller, lower auxiliary roller, and label tape take-up roller passes through the support plate and is connected to the support plate via bearings.

[0007] Preferably, the servo motor is fixedly connected to one side wall of the support plate, and the output end of the servo motor is fixedly connected to one end of the label tape take-up roller.

[0008] Preferably, the label tape is sleeved outside the label tape unwinding roller, upper auxiliary roller, upper flipping roller, lower flipping roller, lower auxiliary roller, and label tape take-up roller. Both ends of the label tape are connected to the label tape unwinding roller and the label tape take-up roller, respectively. The label tape is tactilely connected to the upper auxiliary roller, upper flipping roller, lower flipping roller, and lower auxiliary roller, respectively. The label tape passes through two label tape through slots.

[0009] Preferably, the motor is fixedly connected to one side wall of the fan housing, and the output end of the motor is fixedly connected to one end of the rotating shaft.

[0010] Preferably, the rotating shaft passes through both side walls of the fan housing and is connected to both side walls of the fan housing via bearings.

[0011] Preferably, the cold air duct passes through the support plate and is fixedly connected to the support plate.

[0012] Preferably, the hot air duct passes through the support plate and is fixedly connected to the support plate.

[0013] The present invention has the following advantages:

[0014] 1. Through the design of double drying plus intermediate cooling, the ink is quickly dried by the upper hot air pipe after the first side is printed, and then cooled by the cold air pipe before flipping to avoid material damage. After the second side is printed, it is dried by the lower hot air pipe. This fundamentally solves the problem of smudging caused by the ink not being dry in the traditional process, and significantly improves the quality and stability of double-sided printing.

[0015] 2. Fully automated production is achieved through the printing and drying components and the conveyor and flipping structure. The label tape unwinding, printing, drying, flipping, and rewinding processes are carried out in a continuous manner. With the help of servo motors to precisely control the conveying speed, not only is production efficiency improved, but errors caused by manual intervention are also reduced, making it suitable for large-scale label production scenarios. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 The front perspective view provided for this utility model;

[0019] Figure 2 The rear-view perspective view provided for this utility model;

[0020] Figure 3 A three-dimensional diagram of the label tape conveying process provided by this utility model;

[0021] Figure 4 A perspective view of the printing drying assembly provided by this utility model;

[0022] Figure 5 Partial cross-sectional perspective of the printing drying assembly provided by this utility model Figure 1 ;

[0023] Figure 6 Partial cross-sectional perspective of the printing drying assembly provided by this utility model Figure 2 .

[0024] In the diagram: 1. Base, 2. Support plate, 3. Label tape unwinding roller, 4. Upper auxiliary roller, 5. Upper flipping roller, 6. Lower flipping roller, 7. Lower auxiliary roller, 8. Label tape take-up roller, 9. Servo motor, 10. Label tape, 11. First label screen printing machine, 12. Second label screen printing machine, 13. Fan housing, 14. Inlet filter, 15. Motor, 16. Shaft, 17. Fan blade, 18. Cold air duct, 19. Label tape through slot, 20. Connecting pipe, 21. Diverter plate, 22. Hot air duct, 23. Electric heating wire, 24. Air outlet mesh. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] See attached document Figure 1 - Appendix Figure 6This utility model provides a label screen printing machine capable of double-sided printing, including a base 1, a support plate 2 fixedly mounted on the top of the base 1, and a label tape unwinding roller 3, an upper auxiliary roller 4, an upper flipping roller 5, a lower flipping roller 6, a lower auxiliary roller 7, and a label tape take-up roller 8 respectively inserted inside the support plate 2. A servo motor 9 is provided on one side of the support plate 2, and a label tape 10 is provided outside the label tape unwinding roller 3. A first label screen printing machine 11 and a second label screen printing machine 12 are provided on the other side of the support plate 2. A printing and drying assembly is inserted inside the support plate 2, and the printing and drying assembly includes a fan housing 13. An air inlet filter 14 is fixedly installed on the side. A motor 15 is installed on the outside of the fan housing 13. A rotating shaft 16 is inserted into the inside of the fan housing 13. A fan blade 17 is fixedly sleeved on the outside of the rotating shaft 16. A cold air duct 18 is fixedly connected to one end of the fan housing 13. A label strip groove 19 is opened inside the cold air duct 18. A connecting pipe 20 is fixedly connected to one end of the cold air duct 18. A diverter plate 21 is fixedly installed inside the connecting pipe 20. Two hot air ducts 22 are fixedly connected to the outside of the connecting pipe 20. An electric heating wire 23 is fixedly connected inside each of the two hot air ducts 22. An air outlet screen 24 is fixedly connected to one end of each of the two hot air ducts 22.

[0027] In this implementation scheme, in order to prevent smudging caused by undried ink during printing, the label tape unwinding roller 3 releases the label tape 10 and moves under the traction of the take-up roller 8 driven by the servo motor 9. After the first label screen printing machine 11 completes the first side printing, the electric heating wire 23 of the upper hot air pipe 22 heats the airflow, and the ink is dried and cured by the air outlet mesh 24. The label tape 10 enters the through groove 19 of the cold air pipe 18, and the unheated airflow cools down quickly to avoid damage to the material due to continuous high temperature. The upper flipping roller 5 and the lower flipping roller 6 achieve 180° flipping through the path so that the other side of the label tape faces up, and the second label screen printing machine 12 completes the second side printing. The lower hot air pipe 22 repeats the drying action to ensure that the ink on both sides is fully dried. The upper auxiliary roller 4 and the lower auxiliary roller 7 ensure that the label tape is transported flat. Finally, the take-up roller 8 completes the winding. The entire process realizes automated double-sided printing, improving production efficiency and product qualification rate.

[0028] To achieve stable feeding and precise flipping of the label tape 10, ensuring the continuity and accuracy of double-sided printing, this device employs the following technical solution: One end of the label tape unwinding roller 3, upper auxiliary roller 4, upper flipping roller 5, lower flipping roller 6, lower auxiliary roller 7, and label tape take-up roller 8 all penetrates the support plate 2 and is connected to the support plate 2 via bearings. A servo motor 9 is fixedly connected to one side wall of the support plate 2, and the output end of the servo motor 9 is fixedly connected to one end of the label tape take-up roller 8. The label tape 10 is sleeved on the outside of the label tape unwinding roller 3, upper auxiliary roller 4, upper flipping roller 5, lower flipping roller 6, lower auxiliary roller 7, and label tape take-up roller 8. Both ends of the label tape 10 are connected to the label tape unwinding roller 3 and the label tape take-up roller 8, respectively. The label tape 10 is rotatably connected to the upper auxiliary roller 4, upper flipping roller 5, lower flipping roller 6, and lower auxiliary roller 7, respectively. The label tape 10 passes through two label tape slots 19. The label tape unwinding roller 3, upper auxiliary roller 4, upper flipping roller 5, lower flipping roller 6, lower auxiliary roller 7, and label tape take-up roller 8 are connected to the support plate 2 through bearings, which can rotate flexibly to reduce frictional resistance. The servo motor 9 provides power, and its output directly drives the label tape take-up roller 8 to rotate. The label tape 10 is moved along the preset path by the winding tension. The label tape 10 is wound around the outside of each roller in sequence to form a closed-loop conveying path. The upper auxiliary roller 4 and lower auxiliary roller 7 play a guiding and tensioning role to ensure that the label tape 10 is flat and wrinkle-free. The upper flipping roller 5 and lower flipping roller 6 form a bypass trajectory to achieve 180° flipping, which is convenient for printing on the second side. The label tape 10 passes through two label tape slots 19 to ensure that it is always within the airflow range during the drying and cooling process, thereby improving the ink drying efficiency.

[0029] To achieve a stable supply of hot and cold airflow from the printing and drying components, precisely targeting the label tape 10, the device employs the following technical solution: Motor 15 is fixedly connected to one side wall of the fan housing 13; the output end of motor 15 is fixedly connected to one end of a rotating shaft 16; the rotating shaft 16 penetrates both side walls of the fan housing 13 and is connected to both side walls via bearings; a cold air duct 18 penetrates the support plate 2 and is fixedly connected to it; a hot air duct 22 penetrates the support plate 2 and is fixedly connected to it; and motor 15 is fixed to the side wall of the fan housing 13, with its output end... The direct drive shaft 16 rotates, ensuring efficient power transmission and driving the fan blades 17 to generate stable airflow. The shaft 16 is connected to the two side walls of the fan housing 13 through bearings, ensuring smooth rotation and limiting axial displacement to prevent friction between the fan blades 17 and the housing. The cold air duct 18 passes through the support plate 2 and is fixed, so that the label tape groove 19 is precisely aligned with the label tape 10 conveying path, ensuring that the cold air acts directly on the label tape surface. The hot air duct 22 passes through the support plate 2 and is fixed, forming a directional air duct with the air outlet net 24, allowing the hot air to evenly cover the printing surface of the label tape and achieve rapid ink drying.

[0030] The usage process of this utility model is as follows: First, the preliminary preparation work needs to be completed: fix the label tape 10 to be printed on the label tape unwinding roller 3, manually pull the free end of the label tape 10, and pass it around the upper surface of the upper auxiliary roller 4, the printing station of the first label screen printing machine 11, the lower surface of the upper flip roller 5, the upper surface of the lower flip roller 6, the printing station of the second label screen printing machine 12, and the upper surface of the lower auxiliary roller 7 in sequence, and finally fix it on the label tape take-up roller 8. At the same time, according to the material of the label tape 10 and the type of printing ink, the printing parameters of the first label screen printing machine 11 and the second label screen printing machine 12 are set through the equipment control system, such as the squeegee pressure and printing speed, and the working parameters of the printing drying component are adjusted, including the heating temperature of the electric heating wire 23 and the rotation speed of the motor 15.After connecting to an external power source and starting the equipment, the servo motor 9 drives the label tape take-up roller 8 to rotate. Under the action of the take-up tension, the label tape 10 is released from the label tape unwind roller 3 and moves smoothly along a preset path. First, the label tape 10 passes through the printing station of the first label screen printing machine 11. The first label screen printing machine 11 completes the printing operation on the first side of the label tape 10 according to the set printing parameters (such as squeegee pressure, printing speed, etc.). After the first side is printed, the label tape 10 continues to move to the area of ​​the hot air duct 22 above the first printing and drying component. At this time, the motor 15 drives the fan blade 17 to rotate, and the outside air is filtered by the air inlet filter 14. The airflow entering the fan housing 13 is diverted through the connecting pipe 20 to the upper hot air duct 22. Inside the upper hot air duct 22, the electric heating wire 23 heats the airflow. The heated airflow is then evenly blown onto the first side of the label tape 10 through the upper air outlet mesh 24, drying the freshly printed ink and allowing it to cure quickly. After the first side is dried, the label tape 10 enters the flipping area and passes through the label tape channel 19 inside the cold air duct 18. During this process, the unheated cold airflow cools the label tape 10 through the cold air duct 18. This step effectively prevents the label tape 10 from being subjected to excessively high temperatures due to undergoing two consecutive drying cycles. To prevent deformation and discoloration of the label tape 10 material and ensure its stable physical properties, the cooled label tape 10 undergoes a 180° flip under the action of the upper flip roller 5 and the lower flip roller 6, thus turning it over so that the unprinted side faces upwards, preparing it for the second side printing. The flipped label tape 10 then moves to the printing station of the second label screen printing machine 12, where it prints on the second side of the label tape 10 according to the set parameters. After printing, the label tape 10 continues to move to the area of ​​the lower hot air duct 22 of the second printing and drying assembly, operating on the same principle as the upper hot air duct 22. The airflow is diverted through the connecting pipe 20 to the lower hot air pipe 22. After being heated by the electric heating wire 23, it is blown onto the second side of the label tape 10 through the lower air outlet mesh 24 to dry and cure the ink on the second side. Finally, the label tape 10, after double-sided printing and drying, is neatly wound up by the label tape winding roller 8 under the guidance of the lower auxiliary roller 7, completing the entire double-sided printing process. During the entire operation, the upper auxiliary roller 4 and the lower auxiliary roller 7 can be replaced with tension rollers as needed. By adjusting the tension, the label tape 10 is kept flat during the conveying process, avoiding printing misalignment or wrinkles due to slack, and further ensuring the stability of printing quality.

[0031] The above are merely preferred embodiments of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A label screen printing machine capable of double-sided printing, comprising a base (1), characterized in that: The base (1) is fixedly provided with a support plate (2) on top. The support plate (2) is respectively inserted with a label tape unwinding roller (3), an upper auxiliary roller (4), an upper flipping roller (5), a lower flipping roller (6), a lower auxiliary roller (7), and a label tape take-up roller (8). A servo motor (9) is provided on one side of the support plate (2). A label tape (10) is provided outside the label tape unwinding roller (3). A first label screen printing machine (11) and a second label screen printing machine (12) are provided on the other side of the support plate (2). A printing drying assembly is inserted inside the support plate (2). The printing drying assembly includes a fan housing (13). An air inlet filter (14) is fixedly provided on one side of the fan housing (13). A motor (15) is provided on the outside of the shell (13). A rotating shaft (16) is inserted inside the fan shell (13). A fan blade (17) is fixedly sleeved on the outside of the rotating shaft (16). A cold air pipe (18) is fixedly connected to one end of the fan shell (13). A label strip through groove (19) is opened inside the cold air pipe (18). A connecting pipe (20) is fixedly connected to one end of the cold air pipe (18). A diverter plate (21) is fixedly provided inside the connecting pipe (20). Two hot air pipes (22) are fixedly connected to the outside of the connecting pipe (20). An electric heating wire (23) is fixedly connected inside each of the two hot air pipes (22). An air outlet net (24) is fixedly connected to one end of each of the two hot air pipes (22).

2. The label screen printing machine capable of double-sided printing according to claim 1, characterized in that: The label tape unwinding roller (3), upper auxiliary roller (4), upper flipping roller (5), lower flipping roller (6), lower auxiliary roller (7), and label tape take-up roller (8) all pass through the support plate (2) at one end and are connected to the support plate (2) by bearings.

3. A label screen printing machine capable of double-sided printing according to claim 1, characterized in that: The servo motor (9) is fixedly connected to one side wall of the support plate (2), and the output end of the servo motor (9) is fixedly connected to one end of the label tape take-up roller (8).

4. A label screen printing machine capable of double-sided printing according to claim 1, characterized in that: The label tape (10) is sleeved on the outside of the label tape unwinding roller (3), the upper auxiliary roller (4), the upper flipping roller (5), the lower flipping roller (6), the lower auxiliary roller (7), and the label tape take-up roller (8). The two ends of the label tape (10) are connected to the label tape unwinding roller (3) and the label tape take-up roller (8) respectively. The label tape (10) is tumblingly connected to the upper auxiliary roller (4), the upper flipping roller (5), the lower flipping roller (6), and the lower auxiliary roller (7) respectively. The label tape (10) passes through two label tape through slots (19).

5. A label screen printing machine capable of double-sided printing according to claim 1, characterized in that: The motor (15) is fixedly connected to one side wall of the fan housing (13), and the output end of the motor (15) is fixedly connected to one end of the rotating shaft (16).

6. A label screen printing machine capable of double-sided printing according to claim 1, characterized in that: The rotating shaft (16) passes through both sides of the fan housing (13) and is connected to both sides of the fan housing (13) via bearings.

7. A label screen printing machine capable of double-sided printing according to claim 1, characterized in that: The cold air duct (18) passes through the support plate (2) and is fixedly connected to the support plate (2).

8. A label screen printing machine capable of double-sided printing according to claim 1, characterized in that: The hot air duct (22) passes through the support plate (2) and is fixedly connected to the support plate (2).

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