Printing machine for packaging bag production

Abstract

The utility model belongs to the technical field of printing machines, and particularly relates to a printing machine for packaging bag production, which comprises a printing frame, one end of the printing frame is provided with a feeding roller, one side of the feeding roller is provided with a tension roller, one side of the tension roller is provided with an intaglio printing roller, one side of the intaglio printing roller is provided with a discharging roller, and the other side of the intaglio printing roller is provided with a conveying roller. A tension frame is fixedly connected to the outer wall of the printing frame, a working screw is arranged on the outer wall of the tension frame, a lifting seat is arranged, a spring drives a tension roller on the outer wall of a roller seat to vertically slide through self elasticity, then automatic tension adjusting operation is conducted on a material roll, and the situation that a worker needs to repeatedly adjust the tension of the material roll is avoided; a worker rotates the working screw rod, the working screw rod rotates to drive the lifting base to vertically slide along the limiting sliding groove through the lifting sliding block, the lifting base slides to drive the roller base to slide through the spring, the elasticity of the spring is adjusted, and a material roll is prevented from loosening or breaking.

Description

Technical Field

[0001] This utility model belongs to the field of printing machine technology, and in particular relates to a printing machine for producing packaging bags. Background Technology

[0002] When producing and printing packaging bags, a four-color printing press is required. Four-color printing uses the subtractive color method to print the three primary colors (yellow, magenta, and cyan) and black.

[0003] For example, patent CN217944657U discloses an energy-saving and efficient printing machine for packaging bag production, including a worktable. A first upright plate is fixedly installed on the top of the worktable and near its left side. A first rotating shaft is rotatably connected to the inner side of the first upright plate. A roll is fixedly connected to the outer side of the first rotating shaft. A leveling box is fixedly installed on the top of the worktable and to the right of the roll. A printing machine body is fixedly installed on the right side of the leveling box. A support rod is fixedly installed on the right side of the printing machine body. A top plate is fixedly installed on the top of the support rod. Through the combination of the above structures, this utility model achieves the leveling of packaging bags, avoids wrinkles in the packaging bags during the printing process, improves the printing quality of packaging bags, and can quickly dry the printed packaging bags, thereby greatly improving the printing efficiency of packaging bags.

[0004] Existing printing machines for packaging bag production require operators to repeatedly adjust the tension of the material roll, making the operation rather cumbersome. Therefore, we propose a new printing machine for packaging bag production. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a printing machine for packaging bag production that avoids the need for workers to repeatedly adjust the tension of the material roll.

[0006] In view of this, the present invention provides a printing machine for packaging bag production, including a printing frame, a feeding roller at one end of the printing frame, a tension roller on one side of the feeding roller, a gravure printing roller on one side of the tension roller, and a discharge roller on one side of the gravure printing roller. A tension frame is fixedly connected to the outer wall of the printing frame, a working screw is provided on the outer wall of the tension frame, a lifting slider is threadedly connected to the outer wall of the working screw, a lifting seat is fixedly connected to the outer wall of the lifting slider, a limit groove is provided at the connection between the tension frame and the lifting seat, a spring is fixedly connected to the top of the lifting seat, and a roller seat screwed to one end of the tension roller is fixedly connected to the top of the spring.

[0007] Based on the above structure, the spring drives the tension roller on the outer wall of the roller seat to slide vertically through its own elastic force, thereby automatically adjusting the tension of the material roll. This avoids the need for the operator to repeatedly adjust the tension of the material roll. Then, the operator rotates the working screw, which drives the lifting seat to slide vertically along the limit slide groove through the lifting slider. The sliding of the lifting seat drives the roller seat to slide through the spring, thereby adjusting the elastic force of the spring and preventing the material roll from loosening or breaking.

[0008] Preferably, the printing frame is provided in four sets, and the four sets of printing frames are distributed sequentially along a straight line. In this embodiment, four-color printing operation on the packaging bag material roll is realized through the four sets of printing frames.

[0009] Preferably, the feed roller, tension roller, and gravure printing roller are arranged in an inverted "V" shape. In this embodiment, it is convenient to adjust the tension of the packaging bag roll by adjusting the relative height of the tension roller.

[0010] Preferably, the roller seat is slidably connected to the inner wall of the limiting slide groove, and the roller seat and the lifting seat are located on the same vertical line. In this embodiment, the rotation of the working screw drives the lifting seat to slide vertically along the limiting slide groove through the lifting slider. The sliding of the lifting seat drives the roller seat to slide through the spring, thereby adjusting the elastic force of the spring and preventing the material roll from loosening or breaking.

[0011] Preferably, a curing frame is provided between the gravure printing roller and the discharge roller. A bidirectional screw is provided on the outer wall of the curing frame. Threaded sliders are threaded to both ends of the bidirectional screw. A connecting rod is screwed to the outer wall of the threaded slider. A lifting plate is screwed to the bottom end of the connecting rod. A curing resistance wire is fixedly connected to the bottom end of the lifting plate. In this embodiment, the rotation of the bidirectional screw drives the two sets of threaded sliders to slide relative to each other. The sliding of the threaded sliders drives the lifting plate to slide vertically through the connecting rod, bringing the lifting plate closer to the printing material roll. Then, the curing resistance wire is energized, which cures the printing ink on the outside of the printing material roll, preventing the printing ink from falling off.

[0012] Preferably, the connecting rod is provided in two sets, and the two sets of connecting rods are symmetrical about the vertical bisector of the lifting plate. In this embodiment, the rotation of the bidirectional screw drives the two sets of threaded sliders to slide relative to each other. The sliding of the threaded sliders drives the lifting plate to slide vertically through the connecting rod, which helps to improve the stability of the lifting plate sliding.

[0013] Preferably, the curing resistance wire is S-shaped. In this embodiment, setting the curing resistance wire in an S-shape is beneficial for the uniform curing operation of the packaging bag roll.

[0014] The beneficial effects of this utility model are:

[0015] 1. This printing machine for packaging bag production features a lifting seat. A spring, through its own elasticity, drives the tension roller on the outer wall of the roller seat to slide vertically, thereby automatically adjusting the tension of the material roll. This avoids the need for operators to repeatedly adjust the tension of the material roll. Then, the operator rotates the working screw, which in turn drives the lifting seat to slide vertically along the limit groove via the lifting slider. The sliding of the lifting seat, in turn, drives the roller seat to slide via the spring, thus adjusting the elasticity of the spring and preventing the material roll from loosening or breaking.

[0016] 2. This printing machine for packaging bag production uses a lifting plate. The rotation of the bidirectional screw drives two sets of threaded sliders to slide relative to each other. The sliding of the threaded sliders drives the lifting plate to slide vertically through the connecting rod, bringing the lifting plate close to the printing material roll. Then, the curing resistance wire is energized to cure the printing ink on the outside of the printing material roll, preventing the printing ink from falling off. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the printing frame of this utility model.

[0019] Figure 3 This is a schematic diagram of the tension frame structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the solidification frame structure of this utility model.

[0021] The markings in the diagram are as follows:

[0022] 1. Printing frame; 2. Feed roller; 3. Tension roller; 4. Gravure printing roller; 5. Discharge roller; 6. Tension frame; 7. Working screw; 8. Lifting slider; 9. Lifting seat; 10. Limiting groove; 11. Spring; 12. Roller seat; 13. Curing frame; 14. Bidirectional screw; 15. Threaded slider; 16. Connecting rod; 17. Lifting plate; 18. Curing resistance wire. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be described in further detail.

[0024] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0025] This application discloses a printing machine for producing packaging bags, including a printing frame 1. A feed roller 2 is provided at one end of the printing frame 1. A tension roller 3 is provided on one side of the feed roller 2. A gravure printing roller 4 is provided on one side of the tension roller 3. An output roller 5 is provided on one side of the gravure printing roller 4. A tension frame 6 is fixedly connected to the outer wall of the printing frame 1. A working screw 7 is provided on the outer wall of the tension frame 6. A lifting slider 8 is threadedly connected to the outer wall of the working screw 7. A lifting seat 9 is fixedly connected to the outer wall of the lifting slider 8. A limit groove 10 is provided at the connection between the tension frame 6 and the lifting seat 9. A spring 11 is fixedly connected to the top of the lifting seat 9. A roller seat 12 that is screwed to one end of the tension roller 3 is fixedly connected to the top of the spring 11.

[0026] Based on the above structure, the spring 11 drives the tension roller 3 on the outer wall of the roller seat 12 to slide vertically through its own elastic force, thereby automatically adjusting the tension of the material roll, avoiding the need for the operator to repeatedly adjust the tension of the material roll. Then, the operator rotates the working screw 7, and the rotation of the working screw 7 drives the lifting seat 9 to slide vertically along the limiting slide groove 10 through the lifting slider 8. The sliding of the lifting seat 9 drives the roller seat 12 to slide through the spring 11, thereby adjusting the elastic force of the spring 11 and preventing the material roll from loosening or breaking.

[0027] In one embodiment, four sets of printing frames 1 are provided, and the four sets of printing frames 1 are distributed sequentially along a straight line.

[0028] In this embodiment, four-color printing of packaging bag material rolls is achieved through four sets of printing frames 1.

[0029] In one embodiment, the feed roller 2, tension roller 3, and gravure printing roller 4 are arranged in an inverted "V" shape.

[0030] In this embodiment, the tension adjustment operation of the packaging bag roll can be achieved by adjusting the relative height of the tension roller 3.

[0031] In one embodiment, the roller seat 12 is slidably connected to the inner wall of the limiting groove 10, and the roller seat 12 and the lifting seat 9 are located on the same vertical line.

[0032] In this embodiment, the rotation of the working screw 7 drives the lifting seat 9 to slide vertically along the limiting slide groove 10 via the lifting slider 8. The sliding of the lifting seat 9 drives the roller seat 12 to slide via the spring 11, thereby adjusting the elastic force of the spring 11 and preventing the material roll from becoming loose or broken.

[0033] In one embodiment, a curing frame 13 is provided between the gravure printing roller 4 and the discharge roller 5. A bidirectional screw 14 is provided on the outer wall of the curing frame 13. Threaded sliders 15 are threaded to both ends of the bidirectional screw 14. A connecting rod 16 is screwed to the outer wall of the threaded slider 15. A lifting plate 17 is screwed to the bottom end of the connecting rod 16. A curing resistance wire 18 is fixedly connected to the bottom end of the lifting plate 17.

[0034] In this embodiment, the rotation of the bidirectional screw 14 drives the two sets of threaded sliders 15 to slide relative to each other. The sliding of the threaded sliders 15 drives the lifting plate 17 to slide vertically through the connecting rod 16, bringing the lifting plate 17 close to the printing material roll. Then, the curing resistance wire 18 is energized, which cures the printing ink on the outside of the printing material roll, preventing the printing ink from falling off.

[0035] In one embodiment, the connecting rods 16 are provided in two sets, and the two sets of connecting rods 16 are symmetrical about the vertical bisector of the lifting plate 17.

[0036] In this embodiment, the rotation of the bidirectional screw 14 drives the two sets of threaded sliders 15 to slide relative to each other. The sliding of the threaded sliders 15 drives the lifting plate 17 to slide vertically through the connecting rod 16, which helps to improve the stability of the sliding of the lifting plate 17.

[0037] In one embodiment, the cured resistance wire 18 is S-shaped.

[0038] In this embodiment, by setting an "S"-shaped curing resistance wire 18, it is beneficial to perform uniform curing of the packaging bag roll.

[0039] In this embodiment, the printing machine for packaging bag production first feeds the packaging bag roll into the printing frame 1 via the feed roller 2. The spring 11 drives the tension roller 3 on the outer wall of the roller seat 12 to slide vertically through its own elasticity, thereby automatically adjusting the tension of the roll and avoiding the need for the operator to repeatedly adjust the tension of the roll. Then, the operator rotates the working screw 7, which drives the lifting seat 9 to slide vertically along the limiting slide groove 10 via the lifting slider 8. The sliding of the lifting seat 9 drives the roller seat 12 to slide via the spring 11, thereby adjusting the elasticity of the spring 11 and preventing the roll from loosening or breaking.

[0040] Next, the gravure printing roller 4 rotates, causing the printing ink to adhere to the gravure printing roller 4. Then, the gravure printing roller 4 comes into contact with the material roll, transferring the ink to the material roll. Then, the operator rotates the bidirectional screw 14, which rotates and causes the two sets of threaded sliders 15 to slide relative to each other. The sliding of the threaded sliders 15 drives the lifting plate 17 to slide vertically through the connecting rod 16, bringing the lifting plate 17 closer to the printing material roll. Then, the curing resistance wire 18 is energized, which cures the printing ink on the outside of the printing material roll, preventing the printing ink from falling off.

[0041] Finally, four-color printing of the packaging bag material roll is achieved through four sets of printing frames 1.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model 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 utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A printing machine for producing a packaging bag, characterized by The utility model relates to a printing frame (1) one end is provided with the feeding roller (2), one side of feeding roller (2) is provided with the tension roller (3), one side of tension roller (3) is provided with the gravure roller (4), one side of gravure roller (4) is provided with the discharge roller (5), the outer wall of printing frame (1) is fixedly connected with the tension frame (6), the outer wall of tension frame (6) is provided with the working screw rod (7), the outer wall of working screw rod (7) is threadedly connected with the lifting sliding block (8), the outer wall of lifting sliding block (8) is fixedly connected with the lifting seat (9), the connecting part of tension frame (6) and lifting seat (9) is provided with the limiting sliding slot (10), the top of lifting seat (9) is fixedly connected with the spring (11), the top of spring (11) is fixedly connected with the roller seat (12) that is screwed with one end of tension roller (3).

2. The printing machine for producing a packaging bag according to claim 1, characterized in that: The printing frame (1) is provided with four groups, and the four groups of printing frames (1) are sequentially distributed along a straight line.

3. The printing machine for producing a packaging bag according to claim 1, characterized in that: The feeding roller (2), the tension roller (3) and the gravure roller (4) are distributed in an inverted "V" shape.

4. The printing machine for producing a packaging bag according to claim 1, characterized by: The roller seat (12) is slidably connected with the inner wall of the limiting sliding slot (10), and the roller seat (12) and the lifting seat (9) are located on the same vertical line.

5. The printing machine for producing a packaging bag according to claim 1, characterized by: The gravure roller (4) and the discharge roller (5) are provided with a curing frame (13) therebetween, the outer wall of the curing frame (13) is provided with a bidirectional screw rod (14), the two ends of the bidirectional screw rod (14) are threadedly connected with threaded sliding blocks (15), the outer wall of the threaded sliding blocks (15) is screwed with connecting rods (16), the bottom end of the connecting rods (16) is screwed with lifting plates (17), and the bottom end of the lifting plates (17) is fixedly connected with curing resistance wires (18).

6. The printing machine for producing a packaging bag according to claim 5, characterized in that: The connecting rods (16) are provided with two groups, and the two groups of connecting rods (16) are symmetrically arranged about the perpendicular bisector of the lifting plate (17).

7. The printing machine for producing a packaging bag according to claim 5, characterized in that: The curing resistance wire (18) has an "S" shape.

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