Double-sided printing mechanism of printing machine

Abstract

The utility model relates to a double-sided printing mechanism of a printing machine, which aims to solve the technical problem of printing ink blooming caused by direct contact between the current wet printing ink and a turn-over roller, and comprises a box body with an opening on the upper end face, at least one group of mounting grooves are arranged on two side walls of the box body, and a rotating component and a cooling unit are rotatably connected in the mounting grooves. The rotating assembly comprises a discharging roller and a receiving roller, servo motors A are fixedly arranged at one end of the discharging roller and one end of the receiving roller correspondingly, the servo motors A are fixedly placed on the outer side wall of the box body, the cooling unit comprises a turnover roller, a through groove is formed in the turnover roller, rotating grooves are formed in the two sides of the turnover roller correspondingly, and bearing seats are fixedly connected into the two rotating grooves correspondingly. A connecting rod is fixedly connected in the two bearing seats together, at least one set of spiral blades are fixedly arranged on the surface, placed on the through groove, of the connecting rod, the spiral blades are installed on the surface of the connecting rod in an inclined angle, and the printing ink blow-drying device has the advantages that printing ink on the printing face is blow-dried, and printing ink blooming is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of double-sided printing machines, in particular to a double-sided printing mechanism of a printing machine. Background Art

[0002] A printing press is a machine for printing text and images. Modern printing presses are generally composed of mechanisms such as plate loading, inking, embossing, and paper feeding (including folding). Its working principle is: first, the text and image to be printed are made into a printing plate and mounted on a printing press. Then, ink is applied to the places with text and images on the printing plate manually or by a printing press, and then directly or indirectly transferred to paper or other substrates (such as textiles, metal plates, plastics, leather, wood boards, glass and ceramics), thereby replicating a printed product identical to the printing plate.

[0003] In the existing double-sided printing machine, the printed paper needs to be turned over by a turning roller. During the turning process, since the turning roller is in direct contact with the printed surface of the paper, it is easy to cause the undried ink to contact and rub with the turning roller, thereby causing the ink on the printed surface to smudge, affecting the printing effect. In view of this, we propose a double-sided printing mechanism for a printing machine. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art, meet practical needs, and provide a double-sided printing mechanism for a printing press to solve the technical problem that the current undried ink directly contacts the flip roller, thereby causing the ink to smudge.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is as follows: a double-sided printing mechanism of a printing press is designed, including a double-sided printing mechanism of a printing press, characterized in that it includes a box body with an upper end surface opening, and at least one set of mounting grooves are opened on the two side walls of the box body; a rotating assembly and a cooling unit are rotatably connected in the mounting groove; the rotating assembly includes a discharge roller and a receiving roller, and one end of the discharge roller and the receiving roller are fixedly arranged with a servo motor A, and the servo motor A is fixedly placed on the outer side wall of the box body;

[0006] The cooling unit includes a flipping roller, a through groove is opened inside the flipping roller, and rotation grooves are opened on both sides of the flipping roller. Bearing seats are fixedly connected in the two rotation grooves, and a connecting rod is fixedly connected in the two bearing seats. The connecting rod is placed on the surface of the through groove and fixedly arranged with at least one group of spiral blades, and the spiral blades are installed at an inclined angle on the surface of the connecting rod.

[0007] Preferably, a plurality of spiral grooves are formed on the surface of the flipping roller, and the spiral grooves are in a spiral arc structure with two ends respectively bent toward two axes of the flipping roller.

[0008] Preferably, extension rods are fixedly connected to both sides of the turning roller, and the surfaces of the extension rods are rotatably connected in the mounting grooves.

[0009] Preferably, a servo motor B is fixedly arranged on the outer side of the box body, and one end of the connecting rod passes through the side wall of the extension rod and is fixedly connected to the output end of the servo motor B.

[0010] Preferably, a printing roller A and a printing roller B are rotatably connected in the mounting groove, the printing roller A is used for printing on the first printing surface, and the printing roller B is used for printing on the second printing surface.

[0011] Preferably, a guide assembly is rotatably arranged in the mounting groove;

[0012] The guide assembly includes a guide roller A and a guide roller B. The guide roller A is located at the upper end between the printing roller A and the flipping roller and forms a triangular structure. The guide roller B is located on the right side of the printing roller B and forms a triangular structure with the printing roller B and the flipping roller.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the flipping roller rotates in the moving direction of the paper, a spiral groove can be set up, and the smoothness of the curve of the spiral groove can be used to improve the smoothness between the paper and the paper when in contact, thereby avoiding wrinkles when the paper is turned over. At the same time, the spiral groove can increase the air outlet area on the surface of the flipping roller, thereby improving the efficiency of drying the ink. Subsequently, by setting a bearing seat, when the flipping roller rotates, the connecting rod and the spiral blade can rotate in the opposite direction to the flipping roller, thereby avoiding the rotation speed of the flipping roller and the rotation speed of the spiral blade offsetting each other and thus weakening the wind force. By providing wind force in the opposite direction when the flipping roller rotates, the wind can fully pass through the spiral groove and contact the printing surface of the paper, thereby improving the air-drying efficiency of the ink.

[0015] 2. By setting the guide assembly, a triangular structure is formed between the printing roller A and the printing roller B, which can enhance the tension and stability of the paper when the paper is conveyed, reduce the occurrence of paper wrinkles, and improve the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure inside the box of the utility model;

[0018] Figure 3 It is a structural side view of the utility model;

[0019] Figure 4 This is a structural cross-sectional view of the cooling unit of the utility model;

[0020] In the figure: 1. Box body; 2. Rotating assembly; 201. Discharging roller; 202. Receiving roller; 3. Cooling unit; 301. Turning roller; 302. Bearing seat; 303. Connecting rod; 304. Spiral blade; 305. Thread groove; 4. Servo motor B; 5. Printing roller A; 6. Printing roller B; 7. Guide assembly; 701. Guide roller A; 702. Guide roller B. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] Embodiment: A double-sided printing mechanism of a printing press, see Figures 1 to 4 , comprising a box body 1 with an opening on the upper end face, a group of mounting grooves are opened on the two side walls of the box body 1, and a rotating assembly 2 and a cooling unit 3 are rotatably connected in the mounting grooves;

[0023] In a specific embodiment, if Figure 2 As shown, the rotating assembly 2 includes a discharging roller 201 and a receiving roller 202 , and one end of each of the discharging roller 201 and the receiving roller 202 is fixedly provided with a servo motor A, which is fixedly placed on the outer side wall of the box body 1 .

[0024] In a specific embodiment, if Figure 2 , Figure 3 and Figure 4 As shown, the cooling unit 3 includes a flipping roller 301, a through groove is opened inside the flipping roller 301, and rotation grooves are opened on both sides of the flipping roller 301. Bearing seats 302 are fixedly connected in the two rotation grooves. A connecting rod 303 is fixedly connected in the two bearing seats 302. The connecting rod 303 is placed on the surface of the through groove and six groups of spiral leaves 304 are fixedly arranged. The spiral leaves 304 are installed at an inclined angle on the surface of the connecting rod 303. By setting the bearing seat 302, the spiral leaves 304 can be easily rotated in the opposite direction when the flipping roller 301 rotates.

[0025] Specifically, a plurality of spiral grooves 305 are provided on the surface of the flipping roller 301. The spiral grooves 305 are in a spiral arc structure with both ends bent toward the two axes of the flipping roller 301. Extension rods are fixedly connected to both sides of the flipping roller 301. The surfaces of the extension rods are rotatably connected in the mounting grooves. A servo motor B4 is fixedly arranged on the outside of the box body 1. One end of the connecting rod 303 passes through the side wall of the extension rod and is fixedly connected to the output end of the servo motor B4.

[0026] Furthermore, a printing roller A5 and a printing roller B6 are rotatably connected in the mounting groove, the printing roller A5 is used for printing on the first printing surface, and the printing roller B6 is used for printing on the second printing surface.

[0027] Furthermore, if Figure 2 and Figure 3 As shown, a guide assembly 7 is rotatably arranged in the installation groove; the guide assembly 7 includes a guide roller A701 and a guide roller B702, the guide roller A701 is located at the upper end between the printing roller A5 and the turning roller 301 and forms a triangular structure, the guide roller B702 is located on the right side of the printing roller B6 and forms a triangular structure with the printing roller B6 and the turning roller 301. By setting the guide assembly 7, the tension of the paper during transportation can be increased through the formed triangular structure, the stability of the structure of the device is enhanced, and the wrinkles of the paper during transportation are avoided.

[0028] Working principle: The device drives the discharging roller 201 to rotate through the operation of the servo motor A, and conveys the paper to be printed. Then, the paper moves horizontally through the guide roller A701, and the guide roller 701 provides tension to the paper. Then, the paper moves downward from the left side of the printing roller A5 to contact the printing roller A5, so that the printing roller A5 prints on its first printing surface. After printing, the paper is conveyed upward through the bottom of the flip roller 301, and contacts the printing roller B6 on the left side of the printing roller B6, so that the printing roller B6 prints on the second printing surface of the paper. During this period, the surface of the flip roller 301 directly contacts the printing surface of the paper and follows the movement of the paper. The connecting rod in the through groove rotates in the direction of movement through the servo motor B. The operation of the servo motor B drives the spiral blade 304 to rotate in the opposite direction to the turning roller 301, and the generated wind force blows to the surface of the paper after printing through the spiral groove 305. The structure of the spiral groove 305 is conducive to expanding the air outlet area, increasing the wind-receiving surface of the paper, and improving the cooling effect of the printed paper. Subsequently, the guide roller B702 can provide a support point and tension for the paper, so that the paper can smoothly contact the receiving roller 202 horizontally, and the receiving roller 202 is driven to rotate by the operation of the servo motor A, so that the receiving roller 202 can rewind the paper after double-sided printing.

[0029] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A double-sided printing mechanism of a printing press, characterized in that: It comprises a box body (1) with an opening on the upper end surface, and at least one set of installation grooves is provided on two side walls of the box body (1); A rotating assembly (2) and a cooling unit (3) are rotatably connected in the installation groove; The rotating assembly (2) comprises a discharging roller (201) and a receiving roller (202), one end of each of the discharging roller (201) and the receiving roller (202) being fixedly provided with a servo motor A, and the servo motor A being fixedly placed on the outer side wall of the box body (1); The cooling unit (3) comprises a flipping roller (301), a through groove is provided inside the flipping roller (301), rotation grooves are provided on both sides of the flipping roller (301), bearing seats (302) are fixedly connected in both rotation grooves, a connecting rod (303) is fixedly connected in both bearing seats (302), the connecting rod (303) is placed on the surface of the through groove and fixedly arranged with at least one group of spiral blades (304), and the spiral blades (304) are installed at an inclined angle on the surface of the connecting rod (303).

2. A double-sided printing mechanism of a printing press as claimed in claim 1, characterized in that: A plurality of spiral grooves (305) are provided on the surface of the flipping roller (301), and the spiral grooves (305) are in a spiral arc structure with two ends respectively bent toward the two axis centers of the flipping roller (301).

3. A double-sided printing mechanism of a printing press as claimed in claim 2, characterized in that: Extension rods are fixedly connected to both sides of the turning roller (301), and the surfaces of the extension rods are rotatably connected in the mounting grooves.

4. A double-sided printing mechanism of a printing press as claimed in claim 1, characterized in that: A servo motor B (4) is fixedly arranged on the outside of the box body (1), and one end of the connecting rod (303) passes through the side wall of the extension rod and is fixedly connected to the output end of the servo motor B (4).

5. A double-sided printing mechanism of a printing press as claimed in claim 1, characterized in that: A printing roller A (5) and a printing roller B (6) are rotatably connected in the installation groove, wherein the printing roller A (5) is used for printing on the first printing surface, and the printing roller B (6) is used for printing on the second printing surface.

6. A double-sided printing mechanism of a printing press as claimed in claim 1, characterized in that: A guide assembly (7) is rotatably arranged in the installation groove; The guide assembly (7) comprises a guide roller A (701) and a guide roller B (702); the guide roller A (701) is located at the upper end between the printing roller A (5) and the flipping roller (301) and forms a triangular structure; the guide roller B (702) is located on the right side of the printing roller B (6) and forms a triangular structure with the printing roller B (6) and the flipping roller (301).

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