Plastic packaging gravure printing device convenient to adjust

Abstract

The invention relates to the technical field of plastic package processing equipment, in particular to a plastic package gravure printing device convenient to adjust, which comprises a base, a bracket is mounted at the top of the base, a guide roller is fixedly connected to the top of the bracket, and an air heater is fixedly mounted on the back of the bracket. A supporting frame is fixedly connected to the left side, close to the back face, of the base, a driving assembly is fixedly connected to the left side of the support, an adjusting disc drives an adjusting rod to rotate in a fixed block, a movable block slides up and down along the adjusting rod under the acting force of threads, and the movable block can drive a pressure roller to move up and down in the support when moving. When the pressure roller moves up and down in the bracket, the tension rod is driven by the moving plate to slide in the inclined tension groove, so that the tension rod drives the second tension wheel to transversely move in the bracket, and the tension transmission belt is prevented from being separated from the outer walls of the first tension wheel, the second tension wheel and the third tension wheel; and the transmission system does not need to be subjected to secondary adjustment without shutdown of workers.

Description

Technical Field

[0001] This invention relates to the field of plastic packaging processing equipment technology, specifically to a gravure printing device for plastic packaging that is easy to adjust. Background Technology

[0002] A gravure printing device for plastic packaging is a type of equipment used for color printing on plastic packaging materials. It employs gravure printing technology, which transfers ink onto a plastic film through a patterned roller, thereby achieving the printing of color patterns.

[0003] Most gravure printing equipment on the market requires adjusting the distance between the printing roller and the pressing roller according to the thickness of the printed material. After adjusting the distance, the power transmission system needs to be readjusted; otherwise, there will be a speed difference between the printing roller and the pressing roller, which will lead to printing errors. Summary of the Invention

[0004] The purpose of this invention is to provide an easily adjustable gravure printing apparatus for plastic packaging, solving the problem mentioned in the background art where the power transmission system needs to be readjusted after adjusting the distance between the printing roller and the pressing roller. To achieve the above objective, this invention provides the following technical solution: an easily adjustable gravure printing apparatus for plastic packaging, comprising a base, a bracket mounted on the top of the base, a guide roller fixedly connected to the top of the bracket, a hot air blower fixedly mounted on the back of the bracket, a support frame fixedly connected to the left side of the base near the back, a drive assembly fixedly connected to the left side of the bracket, a tension assembly engaged with the outer wall of the drive assembly, a transmission assembly engaged with the outer wall of the drive assembly, and the outer wall of the transmission assembly slidingly abutting against the inner wall of the pull-out assembly.

[0005] The inner wall of the pull-out assembly is fixedly connected to one end of the ink storage assembly, the bottom of the ink storage assembly is fixedly connected to the top of the base, the outer wall of the ink storage assembly is movably connected to the outer wall of the drive assembly, and an adjustment assembly is fixedly connected to the left side of the bracket near the top, the inner wall of the adjustment assembly is movably sleeved with the outer wall of the tension assembly.

[0006] Preferably, the bracket has a longitudinal sliding port on the inner wall near the top for the tension component to slide up and down, and a driving port for the driving component to rotate is also provided below the longitudinal sliding port. The bracket also has a transverse sliding groove on the outer wall near the right side.

[0007] Preferably, the drive assembly includes a mounting block, a drive motor, and a gravure printing roller. The right side of the mounting block is fixedly mounted on the left side of the bracket by bolts, and the inner wall of the mounting block is engaged with the outer wall of the drive motor. The outer wall of the output shaft of the drive motor is engaged with the inner wall of the transmission assembly, and the output shaft of the drive motor is fixedly connected to one end of the gravure printing roller through a coupling. The other end of the gravure printing roller is engaged with the inner wall of the tension assembly, and the outer wall of the output shaft of the drive motor is rotatably connected to the inner wall of the drive port.

[0008] Preferably, the tension assembly includes a first tension wheel, a tension transmission belt, a second tension wheel, a tension rod, a moving plate, a pressure roller, and a third tension wheel. The inner wall of the first tension wheel is engaged with the outer wall of the other end of the gravure printing roller, and the outer wall of the first tension wheel is engaged with the inner wall of the tension transmission belt. The first tension wheel is connected to the second and third tension wheels via the tension transmission belt. The inner wall of the second tension wheel is engaged with the outer wall of the tension rod, and one end of the tension rod slides against the inner wall of the transverse sliding groove. The other end of the tension rod slides against the inner wall of the moving plate, and the inner wall of the moving plate is provided with a tension rod support. The sliding inclined moving groove has a positioning hole on the inner wall of the moving plate near the back side, and the inner wall of the positioning hole is rotatably connected to the outer wall of the pressure roller. The outer wall of the pressure roller near one end of the moving plate is engaged with the inner wall of the third tension wheel, and the outer wall of the other end of the pressure roller is movably inserted into the inner wall of the adjusting component. The outer wall of the pressure roller is slidably connected to the inner wall of the longitudinal sliding port. When the pressure roller moves up and down in the bracket, it drives the tension rod to slide in the inclined tension groove through the moving plate, so that the tension rod drives the second tension wheel to move laterally in the bracket, thereby preventing the tension transmission belt from detaching from the outer walls of the first tension wheel, the second tension wheel and the third tension wheel.

[0009] Preferably, the transmission assembly includes a first transmission wheel, a power transmission belt, a second transmission wheel, a transmission rod, a rotating disk, and a lever. The inner wall of the first transmission wheel is engaged with the outer wall of the output shaft of the drive motor, and the outer wall of the first transmission wheel is meshed with the inner wall of the power transmission belt. The first transmission wheel is connected to the second transmission wheel via the power transmission belt, and the inner wall of the second transmission wheel is engaged with the outer wall of the transmission rod. The outer wall of one end of the transmission rod is rotatably connected to the inner wall of the support frame, and the other end of the transmission rod is fixedly connected to the left side of the rotating disk. A lever is fixedly connected to the right side of the rotating disk, and the outer wall of the lever slides against the inner wall of the pull-out assembly. The drive motor drives the second transmission wheel to rotate through the meshing action of the first transmission wheel and the power transmission belt. The second transmission wheel drives the transmission rod to rotate within the support frame, and the rotation of the transmission rod drives the rotating disk to rotate.

[0010] Preferably, the pull-out assembly includes a toggle block, a connecting block, a pull rod, a piston plate, and a flow-tracing chamber. The inner wall of the toggle block has a toggle opening for the toggle rod to slide, and the top of the toggle block is fixedly connected to the bottom of the connecting block. The bottom of the connecting block away from the toggle block is fixedly connected to the pull rod, and the bottom end of the pull rod is fixedly connected to the top of the piston plate. The outer wall of the piston plate slides against the inner wall of the flow-tracing chamber, and the inner wall of the flow-tracing chamber is fixedly connected to one end of the ink storage assembly. The rotating disk drives the toggle rod to slide laterally within the toggle block. Due to the limiting effect of the flow-tracing chamber on the piston plate, the toggle block moves vertically up and down with the toggle rod. The toggle block drives the piston plate to slide up and down within the flow-tracing chamber through the connecting block and the pull rod.

[0011] Preferably, the ink storage assembly includes an ink storage tank, a doctor blade, and a connecting tube. The bottom of the ink storage tank is fixedly connected to the top of the base, and a guide block is provided on the inner bottom wall of the ink storage tank. A doctor blade is fixedly connected to the inner wall of the ink storage tank near the top, and the outer wall of the doctor blade is movably overlapped with the outer wall of the gravure printing roller. The inner wall of the back of the ink storage tank is fixedly connected to one end of the connecting tube, and the other end of the connecting tube is fixedly connected to the inner wall of the flow-through chamber. The connecting tube is provided with movable flaps at both ends at intervals. When the piston plate rises, the ink in the ink storage tank pushes open the movable flap on one side of the connecting tube and enters the flow-through chamber. When the piston plate falls, it pushes open the movable flap on the other side of the connecting tube and flows back into the ink storage tank, increasing the fluidity of the ink and preventing the ink from being stored in the ink storage tank for a long time and causing its surface to oxidize and form a film.

[0012] Preferably, the adjustment assembly includes a fixed block, an adjustment rod, a movable block, and an adjustment disc. The right side of the fixed block is fixedly connected to the left side of the bracket near the top, and the inner wall of the fixed block is rotatably connected to the outer wall of the adjustment rod. The outer wall of the adjustment rod located below the fixed block is provided with an external thread. The outer wall of the adjustment rod near the bottom is threadedly connected to the inner wall of the movable block, and the inner wall of the movable block is movably inserted into the outer wall of the other end of the pressure roller. An adjustment disc is installed at the top of the adjustment rod, and an adjustment handle is provided at the top of the adjustment disc. By grasping the handle and rotating the adjustment disc, the adjustment disc drives the adjustment rod to rotate within the fixed block. Under the action of the thread, the movable block slides up and down along the adjustment rod. When the movable block moves, it drives the pressure roller to move up and down within the bracket.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, by grasping the handle and rotating the adjustment disc, the adjustment disc drives the adjustment rod to rotate within the fixed block. Under the action of the thread, the moving block slides up and down along the adjustment rod. As the moving block moves, it drives the pressure roller to move up and down within the bracket. When the pressure roller moves up and down within the bracket, it drives the tension rod to slide within the inclined tension groove via the moving plate. Under the resistance of the tension groove, the tension rod drives the second tension wheel to move laterally within the bracket, thereby preventing the tension transmission belt from detaching from the outer walls of the first, second, and third tension wheels. At the same time, it ensures that the transmission belt can continuously drive the power transmission of the first, second, and third tension wheels. It does not require the operator to stop the machine for secondary adjustment of the transmission system.

[0014] In this invention, during printing, a drive motor rotates the gravure printing roller within the ink storage chamber, causing ink to adhere to the outer wall of the roller. Excess ink is scraped off by a doctor blade. The drive motor, through the meshing of a first transmission wheel and a power transmission belt, drives a second transmission wheel to rotate. The second transmission wheel drives a transmission rod to rotate within a support frame. The rotation of the transmission rod causes a rotating disk to rotate, which in turn causes a lever to slide laterally within a lever block. Due to the restrictive effect of the flow chamber on the piston plate, the circular motion of the lever block's rotating disk is converted into a linear motion following the lever's up-and-down movement. The movement, driven by the connecting block and the pull rod, causes the piston plate to slide up and down in the flow chamber. Under negative pressure, the piston plate pushes open the movable flap on one side of the connecting pipe and enters the flow chamber when the piston plate rises. When the piston plate falls, it pushes open the movable flap on the other side of the connecting pipe and flows back into the ink storage chamber. This further improves the fluidity of the ink, prevents the ink from being stored in the ink storage chamber for a long time and causing its surface to oxidize and form a film. It also prevents the gravure printing roller from rotating in the ink storage chamber and causing uneven ink adhesion, making the ink adhere more evenly and effectively to the surface of the printing roller. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the connection structure between the pull-out component and the ink storage component of the present invention; Figure 5 This is a schematic diagram of the connection structure of the drive assembly, tension assembly, transmission assembly, and adjustment assembly of the present invention; Figure 6 This is a rear view of the overall structure of the present invention; Figure 7 This is a side view of the tension assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the adjustment component of the present invention; Figure 9This is a schematic diagram of the connection structure of the transmission component, the pull-out component and the ink storage component of the present invention.

[0016] In the diagram: 1. Base; 2. Bracket; 3. Guide roller; 4. Hot air blower; 5. Support frame; 6. Drive assembly; 601. Mounting block; 602. Drive motor; 603. Gravure printing roller; 7. Tension assembly; 701. First tension wheel; 702. Tension transmission belt; 703. Second tension wheel; 704. Tension bar; 705. Moving plate; 706. Pressure roller; 707. Third tension wheel; 8. Transmission assembly; 801. First transmission wheel; 802. Power transmission. Belt; 803, Second transmission wheel; 804, Transmission rod; 805, Rotating disk; 806, Actuating rod; 9, Pull-out assembly; 901, Actuating block; 902, Connecting block; 903, Pull-out rod; 904, Piston plate; 905, Backflow chamber; 10, Ink storage assembly; 1001, Ink storage chamber; 1002, Doctor blade; 1003, Connecting pipe; 11, Adjustment assembly; 1101, Fixing block; 1102, Adjusting rod; 1103, Moving block; 1104, Adjustment disk. Detailed Implementation

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

[0018] Please see Figures 1 to 5 The present invention provides a technical solution: an easily adjustable gravure printing device for plastic packaging, comprising a base 1, a bracket 2 mounted on the top of the base 1, a guide roller 3 fixedly connected to the top of the bracket 2, a hot air blower 4 fixedly mounted on the back of the bracket 2, a support frame 5 fixedly connected to the left side of the base 1 near the back, a drive assembly 6 fixedly connected to the left side of the bracket 2, a tension assembly 7 engaged with the outer wall of the drive assembly 6, a transmission assembly 8 engaged with the outer wall of the drive assembly 6, and the outer wall of the transmission assembly 8 slidingly abutting against the inner wall of the pull-out assembly 9.

[0019] The inner wall of the pull-out component 9 is fixedly connected to one end of the ink storage component 10. The bottom of the ink storage component 10 is fixedly connected to the top of the base 1. The outer wall of the ink storage component 10 is movably connected to the outer wall of the drive component 6. An adjustment component 11 is fixedly connected to the left side of the bracket 2 near the top. The inner wall of the adjustment component 11 is movably connected to the outer wall of the tension component 7.

[0020] In this embodiment, as Figures 1 to 5As shown, the inner wall of the bracket 2 near the top has a longitudinal sliding port for the tension component 7 to slide up and down, and the bracket 2 also has a drive port for the drive component 6 to rotate below the longitudinal sliding port. The outer wall of the bracket 2 near the right side also has a transverse sliding groove, and the tension component 7 can slide up and down in the sliding port.

[0021] In this embodiment, as Figures 1 to 5 As shown, the drive assembly 6 includes a mounting block 601, a drive motor 602, and a gravure printing roller 603. The right side of the mounting block 601 is fixedly mounted on the left side of the bracket 2 by bolts, and the inner wall of the mounting block 601 is engaged with the outer wall of the drive motor 602. The outer wall of the output shaft of the drive motor 602 is engaged with the inner wall of the transmission assembly 8, and the output shaft of the drive motor 602 is fixedly connected to one end of the gravure printing roller 603 through a coupling. The other end of the gravure printing roller 603 is engaged with the inner wall of the tension assembly 7, and the outer wall of the output shaft of the drive motor 602 is rotatably connected to the inner wall of the drive port. When the drive motor 602 is started, the drive motor 602 can directly drive the gravure printing roller 603 to rotate, and at the same time, the gravure printing roller 603 can drive the tension assembly 7 to move.

[0022] In this embodiment, as Figures 1 to 5 As shown, the tension assembly 7 includes a first tension wheel 701, a tension transmission belt 702, a second tension wheel 703, a tension rod 704, a moving plate 705, a pressure roller 706, and a third tension wheel 707. The inner wall of the first tension wheel 701 is engaged with the outer wall of the other end of the gravure printing roller 603, and the outer wall of the first tension wheel 701 is engaged with the inner wall of the tension transmission belt 702. The first tension wheel 701 is connected to the second tension wheel 703 and the third tension wheel 707 via the tension transmission belt 702. The inner wall of the second tension wheel 703 is engaged with the outer wall of the tension rod 704, and one end of the tension rod 704 slides against the inner wall of the transverse sliding groove. The other end of the tension rod 704 slides against the inner wall of the moving plate 705, and the inner wall of the moving plate 705 has a groove for... The tension rod 704 slides in an inclined moving groove. The inner wall of the moving plate 705 near the back is provided with a positioning hole, and the inner wall of the positioning hole is rotatably connected to the outer wall of the pressure roller 706. The outer wall of the pressure roller 706 near the moving plate 705 is engaged with the inner wall of the third tension wheel 707, and the outer wall of the other end of the pressure roller 706 is movably inserted into the inner wall of the adjusting component 11. The outer wall of the pressure roller 706 is slidably connected to the inner wall of the longitudinal sliding port. When the pressure roller 706 moves up and down in the bracket 2, it will drive the tension rod 704 to slide in the inclined tension groove through the moving plate 705, so that the tension rod 704 drives the second tension wheel 703 to move laterally in the bracket 2, thereby preventing the tension transmission belt 702 from detaching from the outer walls of the first tension wheel 701, the second tension wheel 703 and the third tension wheel 707.

[0023] In this embodiment, as Figures 1 to 5 As shown, the transmission assembly 8 includes a first transmission wheel 801, a power transmission belt 802, a second transmission wheel 803, a transmission rod 804, a rotating disk 805, and a toggle lever 806. The inner wall of the first transmission wheel 801 is engaged with the outer wall of the output shaft of the drive motor 602, and the outer wall of the first transmission wheel 801 is meshed with the inner wall of the power transmission belt 802. The first transmission wheel 801 is connected to the second transmission wheel 803 via the power transmission belt 802, and the inner wall of the second transmission wheel 803 is engaged with the outer wall of the transmission rod 804. The transmission rod 804... One end of the outer wall of the transmission rod 804 is rotatably connected to the inner wall of the support frame 5, and the other end of the transmission rod 804 is fixedly connected to the left side of the rotating disk 805. The right side of the rotating disk 805 is fixedly connected to the actuating rod 806, and the outer wall of the actuating rod 806 slides against the inner wall of the pull-out assembly 9. The drive motor 602 drives the second transmission wheel 803 to rotate through the meshing of the first transmission wheel 801 and the power transmission belt 802. The second transmission wheel 803 drives the transmission rod 804 to rotate inside the support frame 5. When the transmission rod 804 rotates, it will drive the rotating disk 805 to rotate.

[0024] In this embodiment, as Figures 1 to 5 As shown, the pull-out assembly 9 includes an actuating block 901, a connecting block 902, a pull rod 903, a piston plate 904, and a flow-tracing chamber 905. The inner wall of the actuating block 901 has an actuation opening for the sliding of the actuating rod 806. The top of the actuating block 901 is fixedly connected to the bottom of the connecting block 902. The bottom of the connecting block 902, on the side away from the actuating block 901, is fixedly connected to the pull rod 903. The bottom end of the pull rod 903 is fixedly connected to the top of the piston plate 904. The outer wall of 04 slides against the inner wall of the backflow chamber 905, and the inner wall of the backflow chamber 905 is fixedly connected to one end of the ink storage assembly 10. The rotating disk 805 drives the actuating rod 806 to slide laterally in the actuating block 901. Due to the restriction effect of the backflow chamber 905 on the piston plate 904, the actuating block 901 moves up and down linearly with the actuating rod 806. The actuating block 901 drives the piston plate 904 to slide up and down in the backflow chamber 905 through the connecting block 902 and the pull rod 903.

[0025] In this embodiment, as Figures 1 to 5As shown, the ink storage assembly 10 includes an ink storage tank 1001, a doctor blade 1002, and a connecting pipe 1003. The bottom of the ink storage tank 1001 is fixedly connected to the top of the base 1, and a guide block is provided on the inner bottom wall of the ink storage tank 1001. The doctor blade 1002 is fixedly connected to the inner wall of the ink storage tank 1001 near the top, and the outer wall of the doctor blade 1002 is movably overlapped with the outer wall of the gravure printing roller 603. The inner wall of the back of the ink storage tank 1001 is fixedly connected to one end of the connecting pipe 1003, and the connecting pipe 1003... The other end of 3 is fixedly connected to the inner wall of the backflow chamber 905. The connecting pipe 1003 is provided with movable flaps at both ends. When the piston plate 904 rises, the ink in the ink storage chamber 1001 pushes open the movable flap on one side of the connecting pipe 1003 and enters the backflow chamber 905. When the piston plate 904 falls, it pushes open the movable flap on the other side of the connecting pipe 1003 and flows back into the ink storage chamber 1001, increasing the fluidity of the ink and preventing the ink from being stored in the ink storage chamber 1001 for a long time and causing its surface to oxidize and form a film.

[0026] In this embodiment, as Figures 1 to 5 As shown, the adjustment assembly 11 includes a fixed block 1101, an adjusting rod 1102, a moving block 1103, and an adjusting disc 1104. The right side of the fixed block 1101 is fixedly connected to the left side of the bracket 2 near the top, and the inner wall of the fixed block 1101 is rotatably connected to the outer wall of the adjusting rod 1102. The outer wall of the adjusting rod 1102 located below the fixed block 1101 is provided with an external thread. The outer wall of the adjusting rod 1102 near the bottom end is threadedly connected to the inner wall of the moving block 1103. The inner wall of 3 is movably connected to the outer wall of the other end of the pressure roller 706. An adjustment plate 1104 is installed at the top of the adjustment rod 1102, and an adjustment handle is provided at the top of the adjustment plate 1104. By grasping the handle and rotating the adjustment plate 1104, the adjustment plate 1104 drives the adjustment rod 1102 to rotate within the fixed block 1101. Under the action of the thread, the moving block 1103 slides up and down along the adjustment rod 1102. When the moving block 1103 moves, it will drive the pressure roller 706 to move up and down within the bracket 2.

[0027] The method of use and advantages of this invention: The working process of this easily adjustable gravure printing apparatus for plastic packaging is as follows: like Figures 1 to 5As shown, grasp the handle and rotate the adjusting disc 1104. The adjusting disc 1104 drives the adjusting rod 1102 to rotate within the fixed block 1101. Under the action of the thread, the moving block 1103 slides up and down along the adjusting rod 1102. When the moving block 1103 moves, it drives the pressure roller 706 to move up and down within the bracket 2. When the pressure roller 706 moves up and down within the bracket 2, it drives the tension rod 704 to slide within the inclined tension groove via the moving plate 705. Under the abutment of the tension groove, the tension rod 704 drives the second tension wheel 703 to move laterally within the bracket 2. This prevents the tension drive belt 702 from detaching from the outer walls of the first tension wheel 701, the second tension wheel 703, and the third tension wheel 707, while ensuring that the drive belt 702 can continuously drive the power transmission of the first tension wheel 701, the second tension wheel 703, and the third tension wheel 707. During printing, the drive motor 602 drives the gravure printing roller 603 to rotate within the ink storage tank 1001, causing the ink to adhere to the outer wall of the gravure printing roller 603. Excess ink is scraped off by the doctor blade 1002. The drive motor 602 connects to the power transmission system via the first drive wheel 801. The meshing force of the drive belt 802 drives the second transmission wheel 803 to rotate. The second transmission wheel 803 drives the transmission rod 804 to rotate within the support frame 5. When the transmission rod 804 rotates, it drives the rotating disk 805 to rotate. The rotating disk 805 drives the actuating rod 806 to slide laterally within the actuating block 901. Due to the limiting effect of the backflow chamber 905 on the piston plate 904, the circular motion of the rotating disk 805 of the actuating block 901 is converted into linear motion following the up and down movement of the actuating rod 806. The actuating block 901 drives the piston plate 906 through the connecting block 902 and the pull rod 903. 04 Slides up and down in the flow chamber 905. Under the action of negative pressure, the piston plate 904 pushes open the movable flap on one side of the connecting pipe 1003 when the piston plate 904 rises and enters the flow chamber 905. When the piston plate 904 falls, it pushes open the movable flap on the other side of the connecting pipe 1003 and flows back into the ink storage chamber 1001. This further improves the fluidity of the ink and prevents the ink from being stored in the ink storage chamber 1001 for a long time, causing its surface to oxidize and form a film. It also prevents the gravure printing roller 603 from rotating in the ink storage chamber 1001 and causing uneven ink adhesion.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable gravure printing apparatus for plastic packaging, comprising a base (1), a bracket (2) mounted on the top of the base (1), a guide roller (3) fixedly connected to the top of the bracket (2), a hot air blower (4) fixedly mounted on the back of the bracket (2), and a support frame (5) fixedly connected to the left side of the base (1) near the back, characterized in that: A drive assembly (6) is fixedly connected to the left side of the bracket (2), a tension assembly (7) is engaged with the outer wall of the drive assembly (6), a transmission assembly (8) is engaged with the outer wall of the drive assembly (6), and the outer wall of the transmission assembly (8) slides against the inner wall of the pull-out assembly (9). The inner wall of the pull-out assembly (9) is fixedly connected to one end of the ink storage assembly (10), the bottom of the ink storage assembly (10) is fixedly connected to the top of the base (1), the outer wall of the ink storage assembly (10) is movably connected to the outer wall of the drive assembly (6), and the left side of the bracket (2) near the top is fixedly connected to the adjustment assembly (11), and the inner wall of the adjustment assembly (11) is movably connected to the outer wall of the tension assembly (7).

2. The easily adjustable gravure printing apparatus for plastic packaging according to claim 1, characterized in that: The bracket (2) has a longitudinal sliding port on the inner wall near the top for the tension component (7) to slide up and down, and a drive port for the drive component (6) to rotate is also provided below the longitudinal sliding port. The bracket (2) also has a transverse sliding groove on the outer wall near the right side.

3. The easily adjustable gravure printing apparatus for plastic packaging according to claim 2, characterized in that: The drive assembly (6) includes a mounting block (601), a drive motor (602), and a gravure printing roller (603). The right side of the mounting block (601) is fixedly mounted on the left side of the bracket (2) by bolts, and the inner wall of the mounting block (601) is engaged with the outer wall of the drive motor (602). The outer wall of the output shaft of the drive motor (602) is engaged with the inner wall of the transmission assembly (8), and the output shaft of the drive motor (602) is fixedly connected to one end of the gravure printing roller (603) through a coupling. The other end of the gravure printing roller (603) is engaged with the inner wall of the tension assembly (7), and the outer wall of the output shaft of the drive motor (602) is rotatably connected with the inner wall of the drive port.

4. The easily adjustable gravure printing apparatus for plastic packaging according to claim 3, characterized in that: The tension assembly (7) includes a first tension wheel (701), a tension drive belt (702), a second tension wheel (703), a tension rod (704), a moving plate (705), a pressure roller (706), and a third tension wheel (707). The inner wall of the first tension wheel (701) is engaged with the outer wall of the other end of the gravure printing roller (603), and the outer wall of the first tension wheel (701) is engaged with the inner wall of the tension drive belt (702). The first tension wheel (701) is connected to the second tension wheel (703) and the third tension wheel (707) respectively via the tension drive belt (702). The inner wall of the second tension wheel (703) is engaged with the outer wall of the tension rod (704), and the tension... One end of the tension rod (704) slides against the inner wall of the transverse sliding groove, and the other end of the tension rod (704) slides against the inner wall of the moving plate (705). The inner wall of the moving plate (705) is provided with an inclined moving groove for the tension rod (704) to slide. The inner wall of the moving plate (705) near the back is provided with a positioning hole, and the inner wall of the positioning hole is rotatably connected to the outer wall of the pressure roller (706). The outer wall of the pressure roller (706) near the moving plate (705) is engaged with the inner wall of the third tension wheel (707), and the outer wall of the other end of the pressure roller (706) is movably inserted into the inner wall of the adjusting assembly (11). The outer wall of the pressure roller (706) is slidably connected to the inner wall of the longitudinal sliding port.

5. The easily adjustable gravure printing apparatus for plastic packaging according to claim 3, characterized in that: The transmission assembly (8) includes a first transmission wheel (801), a power transmission belt (802), a second transmission wheel (803), a transmission rod (804), a rotating disk (805), and a lever (806). The inner wall of the first transmission wheel (801) is engaged with the outer wall of the output shaft of the drive motor (602), and the outer wall of the first transmission wheel (801) is meshed with the inner wall of the power transmission belt (802). The first transmission wheel (801) is connected to the power transmission belt (802) via the power transmission belt (803). The transmission rod (804) is connected to the second transmission wheel (803) and the inner wall of the second transmission wheel (803) is engaged with the outer wall of the transmission rod (804). The outer wall of one end of the transmission rod (804) is rotatably connected to the inner wall of the support frame (5), and the other end of the transmission rod (804) is fixedly connected to the left side of the rotating disk (805). The right side of the rotating disk (805) is fixedly connected to the actuating rod (806), and the outer wall of the actuating rod (806) slides against the inner wall of the pull-out assembly (9).

6. The easily adjustable gravure printing apparatus for plastic packaging according to claim 5, characterized in that: The pull-out assembly (9) includes a toggle block (901), a connecting block (902), a pull rod (903), a piston plate (904), and a backflow chamber (905). The inner wall of the toggle block (901) is provided with a toggle opening for the toggle rod (806) to slide. The top of the toggle block (901) is fixedly connected to the bottom of the connecting block (902). The bottom of the connecting block (902) away from the toggle block (901) is fixedly connected to the pull rod (903). The bottom end of the pull rod (903) is fixedly connected to the top of the piston plate (904). The outer wall of the piston plate (904) slides against the inner wall of the backflow chamber (905). The inner wall of the backflow chamber (905) is fixedly connected to one end of the ink storage assembly (10).

7. The adjustable gravure printing apparatus for plastic packaging according to claim 6, characterized in that: The ink storage assembly (10) includes an ink storage tank (1001), a doctor blade (1002), and a connecting tube (1003). The bottom of the ink storage tank (1001) is fixedly connected to the top of the base (1), and a guide block is provided on the inner bottom wall of the ink storage tank (1001). The doctor blade (1002) is fixedly connected to the inner wall of the ink storage tank (1001) near the top, and the outer wall of the doctor blade (1002) is movably connected to the outer wall of the gravure printing roller (603). The inner wall on the back of the ink storage tank (1001) is fixedly connected to one end of the connecting tube (1003), and the other end of the connecting tube (1003) is fixedly connected to the inner wall of the backflow chamber (905). The connecting tube (1003) is provided with movable flaps at both ends at intervals.

8. The adjustable gravure printing apparatus for plastic packaging according to claim 4, characterized in that: The adjustment assembly (11) includes a fixed block (1101), an adjustment rod (1102), a moving block (1103), and an adjustment disc (1104). The right side of the fixed block (1101) is fixedly connected to the left side of the bracket (2) near the top, and the inner wall of the fixed block (1101) is rotatably connected to the outer wall of the adjustment rod (1102). The outer wall of the adjustment rod (1102) located below the fixed block (1101) is provided with an external thread. The outer wall of the adjustment rod (1102) near the bottom end is threadedly connected to the inner wall of the moving block (1103), and the inner wall of the moving block (1103) is movably inserted into the outer wall of the other end of the pressure roller (706). An adjustment disc (1104) is installed at the top of the adjustment rod (1102), and an adjustment handle is provided at the top of the adjustment disc (1104).

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