Double-sided printing structure of plastic film printing machine

Abstract

The utility model discloses a double-sided printing structure of a plastic film printing machine, which comprises two side plates and a plastic film, and further comprises a printing mechanism, a printing mechanism and a printing mechanism, the turnover mechanism comprises two symmetrically-distributed mounting plates arranged at the tops of the side plates, a first fixing block and a second fixing block are arranged on the inner walls of the opposite sides of the two mounting plates correspondingly, and two turnover rollers of the same size are rotationally connected between the first fixing block and the second fixing block; and the outer wall of one side of the mounting plate is rotationally connected with a side rotating roller. The double-face printing structure of the plastic film printing machine has the advantages that automatic overturning is achieved, one-time printing forming is achieved by optimizing the overturning process, reducing unnecessary downtime and other measures, and therefore production efficiency is remarkably improved, production time is shortened, production cost is reduced, errors caused by manual operation are reduced, and production efficiency is improved. And the finished product is more attractive and neat, and the printing quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film printing, in particular to a double-sided printing structure of a plastic film printing machine. Background Technique

[0002] A printing machine is a machine for printing words and images and is one of the most important devices in modern printing factories. They print words, patterns, images, etc. onto printing substrates such as paper, cloth, leather, plastic, metal, etc. through different technologies and processes. There are many types of printing machines, which can be divided into various types according to different printing methods, and each type has its specific application scenarios and advantages.

[0003] With the wide application of plastic films in the fields of packaging, advertising, etc., the demand for double-sided printing of films is increasing day by day. Traditional double-sided printing methods mostly adopt the method of first printing on one side and then flipping and pasting, which has problems such as low production efficiency, high cost, and easy generation of errors. Therefore, it is particularly important to develop a device that can automatically flip plastic films during the printing process to achieve continuous printing on both sides. Summary of the Utility Model

[0004] The utility model discloses a double-sided printing structure of a plastic film printing machine, aiming to solve the technical problems of traditional double-sided printing methods that mostly adopt the method of first printing on one side and then flipping and pasting, which have problems such as low production efficiency, high cost, and easy generation of errors.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A double-sided printing structure of a plastic film printing machine includes two side plates and a plastic film, and further includes:

[0007] A printing mechanism for printing the plastic film;

[0008] A flipping mechanism includes two symmetrically distributed mounting plates arranged at the top of the side plates. First fixing blocks and second fixing blocks are respectively arranged on the inner walls of the opposite sides of the two mounting plates. Two flipping rollers of the same size are rotatably connected between the first fixing block and the second fixing block. A side turning roller is rotatably connected to the outer wall of one side of the mounting plate. Two symmetrically distributed fixing plates are arranged at the top of the mounting plate. A third turning roller is rotatably connected between the two fixing plates. The plastic film is wound around the circumferential outer walls of the two flipping rollers, the third turning roller, and the side turning roller.

[0009] With the above solution, the plastic film after front printing passes through the flipping mechanism. The film is flipped over by using the flipping roller, the side turning roller and the third turning roller, with the reverse side facing up for reverse printing. Compared with the traditional printing machines on the market, this device can automatically flip. By optimizing the flipping process and reducing unnecessary downtime and other measures, it realizes one-time printing and forming, thus significantly improving production efficiency, reducing production time, and lowering production costs. Double-sided printing eliminates manual operations such as turning over and aligning, reduces errors caused by manual operations, makes the finished product more beautiful and tidy, and improves printing quality.

[0010] In a preferred solution, the printing mechanism includes a first printing roller and a second printing roller. The first printing roller and the second printing roller are both arranged above the first turning roller, and the first printing roller and the second printing roller are respectively arranged on both sides of the flipping mechanism. On one outer wall of the side plate, there is a second support plate. Two symmetrically distributed screw holes are opened at the top of the second support plate. A fixing bolt is rotatably connected in the screw hole. A first support plate is sleeved on the outer wall of the fixing bolt. The second printing roller is rotatably connected to one outer wall of the first support plate. A spring is sleeved on the circumferential outer wall of the first support plate. The spring is arranged between the first support plate and the second support plate.

[0011] In this solution, rotating the fixing bolt can adjust the up and down position of the first support plate, thereby adjusting the positions of the first printing roller and the second printing roller, making the device applicable to plastic films of different thicknesses. Rotate the fixing bolt, and cooperate with the spring to press the first support plate downward. By moving the fixing bolt up and down, the deformation amount of the spring can be adjusted, thereby adjusting the downward pressure of the first support plate, so that the plastic film always clings to the circumferential outer wall of the first printing roller during movement, ensuring the stability of printing and improving printing quality.

[0012] As can be seen from the above, a double-sided printing structure of a plastic film printing machine includes two side plates and a plastic film, and further includes:

[0013] A printing mechanism for printing the plastic film;

[0014] The flipping mechanism includes two symmetrically distributed mounting plates arranged at the top of the side plate. First fixing blocks and second fixing blocks are respectively arranged on the inner walls of the opposite sides of the two mounting plates. Two flipping rollers of the same size are rotatably connected between the first fixing block and the second fixing block. A side turning roller is rotatably connected to the outer wall of one side of the mounting plate. Two symmetrically distributed fixing plates are arranged on the top of the mounting plate. A third turning roller is rotatably connected between the two fixing plates. The plastic film is wound around the circumferential outer walls of the two flipping rollers, the third turning roller and the side turning roller. The double-sided printing structure of a plastic film printing machine provided by the present utility model has automatic flipping. By optimizing the flipping process and reducing unnecessary downtime and other measures, one-time printing and forming are achieved, thereby significantly improving production efficiency, reducing production time, lowering production costs, reducing errors caused by manual operation, making the finished product more beautiful and tidy, and improving the technical effect of printing quality. Brief Description of the Drawings

[0015] Figure 1 FIG. 6 is a schematic diagram of the overall structure of a double-sided printing structure of a plastic film printing machine proposed by the present utility model.

[0016] Figure 2 FIG. 7 is a schematic diagram of the internal structure of a double-sided printing structure of a plastic film printing machine proposed by the present utility model.

[0017] Figure 3 FIG. 8 is a schematic diagram of the structure of the flipping mechanism of a double-sided printing structure of a plastic film printing machine proposed by the present utility model.

[0018] In the drawings: 1, unwind roller; 2, plastic film; 3, side plate; 4, screw; 5, first printing roller; 6, mounting plate; 7, fixing plate; 8, second printing roller; 9, first support plate; 10, second support plate; 11, fixing bolt; 12, side turning roller; 13, first turning roller; 14, second turning roller; 15, winding roller; 16, first fixing block; 17, flipping roller; 18, third turning roller; 19, second fixing block. Detailed Description of the Embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0021] The double-sided printing structure of a plastic film printing machine disclosed by the present utility model is mainly applied to scenarios where the traditional double-sided printing method mostly adopts the way of first single-sided printing and then flipping and pasting, which has problems such as low production efficiency, high cost, and easy generation of errors.

[0022] Refer to Figure 1 and Figure 3 As shown in

[0023] a printing mechanism for printing the plastic film 2;

[0024] a flipping mechanism, which includes two symmetrically distributed mounting plates 6 arranged at the top of the side plates 3. The inner walls of the opposite sides of the two mounting plates 6 are respectively provided with a first fixing block 16 and a second fixing block 19. Between the first fixing block 16 and the second fixing block 19, two flipping rollers 17 of the same size are rotatably connected. One side outer wall of the mounting plate 6 is rotatably connected with a side turning roller 12. At the top of the mounting plate 6, two symmetrically distributed fixing plates 7 are provided. Between the two fixing plates 7, a third turning roller 18 is rotatably connected. The plastic film 2 is wound around the circumferential outer walls of the two flipping rollers 17, the third turning roller 18, and the side turning roller 12.

[0025] Specifically, after the plastic film 2 is printed on the front side, it passes through the flipping mechanism, and the flipping rollers 17, the side turning roller 12, and the third turning roller 18 are used to flip the film over so that the reverse side is facing up for reverse printing. Compared with the traditional printing machines on the market, this device can automatically flip, and through measures such as optimizing the flipping process and reducing unnecessary downtime, it realizes one-time printing and forming.

[0026] Refer to Figure 1 and Figure 2 As shown in

[0027] Refer to Figure 1 and Figure 2, in a preferred embodiment, the printing mechanism includes a first printing roller 5 and a second printing roller 8. Both the first printing roller 5 and the second printing roller 8 are arranged above the first rotating roller 13, and the first printing roller 5 and the second printing roller 8 are respectively arranged on both sides of the flipping mechanism. On one side outer wall of the side plate 3, there is a second support plate 10. Two symmetrically distributed screw holes are opened at the top of the second support plate 10. A fixing bolt 11 is rotatably connected in the screw hole. A first support plate 9 is sleeved on the outer wall of the fixing bolt 11. The second printing roller 8 is rotatably connected to one side outer wall of the first support plate 9. A spring is sleeved on the circumferential outer wall of the first support plate 9. The spring is arranged between the first support plate 9 and the second support plate 10.

[0028] Specifically, rotating the fixing bolt 11 can adjust the up and down position of the first support plate 9, thereby adjusting the positions of the first printing roller 5 and the second printing roller 8, so that the device is applicable to plastic films 2 of different thicknesses. Rotate the fixing bolt 11, and cooperate with the spring to press the first support plate 9 downward. By moving the fixing bolt 11 up and down, the deformation amount of the spring can be adjusted, thereby adjusting the downward pressure of the first support plate 9, so that the plastic film 2 always clings to the circumferential outer wall of the first printing roller 5 during the movement.

[0029] Working principle: The plastic film 2 is led out by the unwinding roller 1. When moving forward, the front side is upward. It passes through the first printing roller 5 to print the front side, continues to move through the flipping mechanism, the back side is upward, passes through the second printing roller 8 to print the back side, and then the winding roller 15 winds the plastic film 2 after double-sided printing to complete double-sided printing.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be the substitution of part of the structure, device, method steps, or a complete technical solution. According to the technical solution of the present invention and its inventive concept, equivalent substitution or change should be covered within the protection scope of the present invention.

Claims

1. A double-sided printing structure of a plastic film printing machine, comprising two side plates (3) and a plastic film (2), characterized in that: Also includes: A printing mechanism, used for printing the plastic film (2); The turning mechanism comprises two symmetrically distributed mounting plates (6) arranged on the top of the side plate (3), first fixed blocks (16) and (19) are respectively arranged on the inner walls of the opposite sides of the two mounting plates (6), two turning rollers (17) of the same size are rotatably connected between the first fixed block (16) and the (19), a side turning roller (12) is rotatably connected to the outer wall of one side of the mounting plate (6), two symmetrically distributed fixing plates (7) are arranged on the top of the mounting plate (6), a third turning roller (18) is rotatably connected between the two fixing plates (7), and the plastic film (2) is wound around the circumferential outer walls of the two turning rollers (17), the third turning roller (18) and the side turning roller (12).

2. The double-sided printing structure of a plastic film printing machine according to claim 1, characterized in that: An unwinding roller (1) and a winding roller (15) are respectively arranged between the two side plates (3), and the unwinding roller (1) and the winding roller (15) are respectively close to the left and right ends of the side plate (3).

3. The double-sided printing structure of a plastic film printing machine according to claim 1, characterized in that: Four first rotating rollers (13) are arranged between the two side plates (3), and the plastic film (2) is wound around the circumferential outer walls of the four first rotating rollers (13).

4. The double-sided printing structure of a plastic film printing machine according to claim 1, characterized in that: A plurality of second rollers (14) are arranged between the two side plates (3), and the plastic film (2) is wound around the circumferential outer walls of the second rollers (14).

5. The double-sided printing structure of a plastic film printing machine according to claim 3, characterized in that: The printing mechanism comprises a first printing roller (5) and a second printing roller (8), wherein the first printing roller (5) and the second printing roller (8) are both arranged above the first rotating roller (13), and the first printing roller (5) and the second printing roller (8) are respectively arranged on both sides of the turning mechanism.

6. The double-sided printing structure of a plastic film printing machine according to claim 5, characterized in that: A second support plate (10) is provided on an outer wall of one side of the side plate (3); two symmetrically distributed screw holes are formed on the top of the second support plate (10); fixing bolts (11) are rotatably connected in the screw holes; the outer wall of the fixing bolts (11) is sleeved with the first support plate (9); and the second printing roller (8) is rotatably connected to an outer wall of one side of the first support plate (9).

7. The double-sided printing structure of a plastic film printing machine according to claim 6, characterized in that: A spring is sleeved on the circumferential outer wall of the first support plate (9), and the spring is arranged between the first support plate (9) and the second support plate (10).

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