Large-breadth double-sided printing machine

Abstract

The utility model discloses a large-breadth double-sided printing machine which comprises a printing machine body and a feeder unit arranged in the printing machine body, a longitudinal paper supply unit is arranged in the feeder unit, a transverse paper supply unit is arranged on the side face of the longitudinal paper supply unit, and the transverse paper supply unit is used for supplying paper to the longitudinal paper supply unit. The printing machine is simple in structure and reasonable in design, stable lifting of a printing paper pile is achieved by arranging the longitudinal paper supply unit, stable paper supply of the printing paper pile is achieved by arranging the longitudinal paper supply unit outside the paper feeding end of the printing machine body, direct paper supply in the machine body is avoided, the paper supply difficulty is reduced, and the printing efficiency is improved. In addition, the arrangement of the positioning unit can ensure that the printing paper pile can stably and accurately enter the longitudinal paper supply unit, so that the paper feeding stability is improved, and the paper feeding difficulty of the large-format printing paper is greatly reduced.

Description

Technical Field

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

[0002] Printing technology has been an important tool for information dissemination since ancient times. From woodblock printing to modern digital printing, its technology and application areas have continued to evolve and expand. Printing presses are the core equipment for realizing this technology. According to the printing principle, they can be divided into letterpress printing presses, gravure printing presses, lithographic printing presses, and stencil printing presses. Each type of printing press has its specific application scenarios. For example, lithographic printing presses are suitable for printing newspapers, books, and magazines, while gravure printing presses are often used in the production of packaging materials and high-quality magazines. As the market demand for printing quality and efficiency continues to increase, the development of printing machinery also tends to be high-speed, automated, and intelligent.

[0003] In the field of large-format printing, as the printing size increases, the corresponding equipment and technology also face more challenges. Large-format printing presses usually need to handle larger and heavier paper piles, which not only requires the structure of the printing press to be widened and lengthened to accommodate large paper, but also increases the difficulty of paper feeding at the paper feed end. For example, in large-format printing of commercial advertisements or outdoor advertisements, the weight of a single sheet of paper may reach tens of kilograms or even hundreds of kilograms. Due to the widening and lengthening of the printing paper pile, operators face more physical limitations and operational inconveniences when placing and adjusting large-format paper. For example, the height and width restrictions at the paper feed end may lead to frequent adjustments and positioning difficulties during paper placement operations. These problems not only affect printing efficiency, but also reduce the quality of printed products. Utility Model Content

[0004] The purpose of the utility model is to provide a large-format double-sided printing machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-format double-sided printing machine, comprising a printing machine body, and a feeder unit arranged inside the printing machine body, wherein a longitudinal paper feeding unit is arranged inside the feeder unit, and a transverse paper feeding unit is arranged on the side of the longitudinal paper feeding unit, and the transverse paper feeding unit is used to supply paper to the longitudinal paper feeding unit;

[0006] The longitudinal paper feeding unit comprises:

[0007] A slide column, the slide column is arranged inside the printing machine body, the side of the slide column is slidably connected with a lifting platform, the lifting platform is provided with a receiving groove inside, and the upper and lower ends of the receiving groove are both provided with a first roller;

[0008] a first motor, wherein the first motor is arranged on a side of the printer body, a rotating shaft is arranged at an output end of the first motor, a side wall of the rotating shaft is rotatably connected to the printer body, and a first sprocket is arranged at the other end of the rotating shaft;

[0009] a second sprocket wheel, the second sprocket wheel being rotatably disposed on a side of the lifting platform;

[0010] A chain belt, one end of which is fixedly connected to the inside of the printing machine body, the chain belt is meshed and connected with the first sprocket and the second sprocket, and the other end of the chain belt is provided with a weighted portion.

[0011] Preferably, the transverse paper feeding unit comprises:

[0012] An outer frame, wherein the outer frame is arranged on the side of the printing machine body, a plurality of second rollers are arranged inside the outer frame, the second rollers are linked by a chain, and a second motor is arranged on the side of the second roller;

[0013] A positioning unit is arranged inside the outer frame and is used to adjust the position of paper supply.

[0014] Preferably, the positioning unit includes:

[0015] A plurality of double-headed screws, the double-headed screws are rotatably connected to the inside of the outer frame, the double-headed screws are linked by a chain, both ends of the double-headed screws are provided with opposite threaded parts, and the threaded parts are connected with positioning blocks;

[0016] A limit block, which is arranged on the outer frame and is slidably connected with the positioning block;

[0017] A third motor is arranged on the side of the outer frame, and an output end of the third motor is connected to the double-headed screw.

[0018] Preferably, the diameter of the middle portion of the second roller is larger than the diameter of the middle portion of the double-headed screw.

[0019] Preferably, a support ring is provided at the bottom of the sliding column.

[0020] Preferably, the chain belt is made of high-strength alloy steel.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The large-format double-sided printing machine realizes stable lifting and lowering of the printed paper pile by arranging a longitudinal paper feeding unit. The stable paper feeding of the printed paper pile is realized by arranging the longitudinal paper feeding unit outside the paper feeding end of the printing machine body, thereby avoiding direct paper feeding inside the machine body and reducing the difficulty of paper feeding. In addition, the establishment of the positioning unit can ensure that the printed paper pile can stably and accurately enter the interior of the longitudinal paper feeding unit, thereby improving the stability of paper feeding and greatly reducing the difficulty of feeding large-format printed paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the internal structure of the paper supply unit of the utility model;

[0025] Figure 3 It is a partial top view of the paper feeding unit of the utility model;

[0026] Figure 4 This is a schematic diagram of the lifting platform structure of the utility model;

[0027] Figure 5 This is a schematic diagram of the internal structure of the lifting platform of the utility model.

[0028] In the figure: 1. printing machine body; 2. feeder unit; 3. longitudinal paper feeding unit; 301. slide column; 302. lifting platform; 303. accommodating groove; 304. first roller; 305. first motor; 306. rotating shaft; 307. first sprocket; 308. second sprocket; 309. chain belt; 310. weighting part; 4. transverse paper feeding unit; 401. outer frame; 402. second roller; 403. second motor; 404. positioning unit; 4041. double-headed screw; 4042. threaded part; 4043. positioning block; 4044. limit block; 4045. third motor; 5. support ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0031] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined. Example

[0033] See also Figure 1-5 As shown, the utility model provides a technical solution of a large-format double-sided printing machine: a large-format double-sided printing machine, comprising a printing machine body 1, and a feeder unit 2 arranged inside the printing machine body 1, a longitudinal paper supply unit 3 is arranged inside the feeder unit 2, and a transverse paper supply unit 4 is arranged on the side of the longitudinal paper supply unit 3, and the transverse paper supply unit 4 is used to supply paper to the longitudinal paper supply unit 3;

[0034] The longitudinal paper feeding unit 3 includes a slide column 301, a first motor 305, a second sprocket wheel 308, and a chain belt 309. The slide column 301 is arranged inside the printer body 1. The side of the slide column 301 is slidably connected to a lifting platform 302. The lifting platform 302 is provided with a receiving groove 303. The upper and lower ends of the receiving groove 303 are provided with a first roller 304. The first motor 305 is arranged on the side of the printer body 1. The output end of the first motor 305 is provided with a rotating shaft 306. The side wall of the rotating shaft 306 is rotatably connected to the printer body 1. The other end of the rotating shaft 306 is provided with a first sprocket wheel 307. The second sprocket wheel 308 is rotatably arranged on the side of the lifting platform 302. One end of the chain belt 309 is fixedly connected to the printer body 1. Inside the printing machine body 1, the chain belt 309 is meshed and connected with the first sprocket 307 and the second sprocket 308, and the other end of the chain belt 309 is provided with a weighting part 310. When placing paper, the operator needs to place the printed paper pile with the plug plate (the plug plate is placed at the bottom of the printed paper pile) on the upper end of the horizontal paper feeding unit 4, and then the horizontal paper feeding unit 4 sends the plug plate part of the printed paper pile into the receiving groove 303 of the lifting platform 302. At this time, the first motor 305 is started, the rotating shaft 306 rotates, and drives the first sprocket 307 to rotate, and the paper pile is lifted up, which is convenient for the feeder unit 2 to supply paper to the printing unit. When the printed paper is transported, the operator takes out the plug plate and lowers the lifting platform 302 to the bottom, and then the second wave of paper placing can be carried out.

[0035] The horizontal paper feeding unit 4 includes an outer frame 401 and a positioning unit 404. The outer frame 401 is arranged on the side of the printing machine body 1. A plurality of second rollers 402 are arranged inside the outer frame 401. The second rollers 402 are linked by a chain. A second motor 403 is arranged on the side of the second roller 402. The positioning unit 404 is arranged inside the outer frame 401. The positioning unit 404 is used to adjust the position of the paper supply. When feeding paper horizontally, the second motor 403 provides output power to drive the second roller 402 to rotate. At this time, the printed paper pile is transported to the receiving slot 303 of the lifting platform 302, and the positioning unit 404 can center the position of the printed paper pile before transportation to ensure that it can accurately enter the inside of the receiving slot 303.

[0036] The positioning unit 404 includes a plurality of double-headed screws 4041, a limit block 4044, and a third motor 4045. The double-headed screws 4041 are rotatably connected to the inside of the outer frame 401, and the double-headed screws 4041 are linked by setting a chain. Opposite threaded portions 4042 are set at both ends of the double-headed screw 4041, and a positioning block 4043 is connected to the threaded portion 4042. The limit block 4044 is set on the outer frame 401, and the limit block 4044 is slidably connected to the positioning block 4043. The third motor 4045 is set on the side of the outer frame 401, and the output end of the third motor 4045 is connected to the double-headed screw 4041. During the positioning process, the third motor 4045 provides output power to drive the double-headed screw 4041 to rotate. Since the threads on both sides are in opposite directions, the positioning block 4043 will move toward each other under the guidance of the limit block 4044, so as to realize the centering positioning of the printing paper pile.

[0037] The diameter of the middle part of the second roller 402 is larger than the diameter of the middle part of the double-headed screw 4041. This design can ensure that the bottom of the paper will not contact the middle part of the double-headed screw 4041 during transportation, thereby reducing transportation resistance and improving transportation efficiency.

[0038] A support ring 5 is provided at the bottom of the slide column 301. The support ring 5 can provide a solid support point so that the lifting platform 302 can remain stable when it is lowered to the bottom, ensuring that the first roller 304 and the second roller 402 are flush with each other to ensure stable paper transportation.

[0039] The chain belt 309 is made of high-strength alloy steel. This design can provide relatively excellent mechanical strength and fatigue resistance, and has good wear resistance and corrosion resistance, so that the chain belt 309 can withstand continuous high-load operations without deformation or breakage.

[0040] The working principle of the utility model is as follows:

[0041] When a large-format double-sided printing machine of this embodiment is used, the printing paper stack with the insert plate needs to be placed on the upper end of the second roller 402. The third motor 4045 is started to drive the double-headed screw 4041 installed inside the outer frame 401 to rotate, thereby centering the printing paper stack through the positioning block 4043. After the positioning is completed, the second motor 403 is started, and the second roller 402 driven by the motor 403 smoothly transports the printing paper stack to the receiving slot 303 of the lifting platform 302.

[0042] Then, the operator starts the first motor 305, and the shaft 306 at the output end rotates and drives the first sprocket 307 to rotate. This action lifts the paper pile upward from the receiving slot 303 through the traction of the chain belt 309, so that the feeder unit 2 can feed the paper to the printing unit. Once the paper is transported, the operator takes out the insert plate and controls the descent of the lifting platform 302 to return to the original position, preparing for the placement and transportation of the next batch of paper.

[0043] This design ensures the efficiency and accuracy of the printing process through precise centering positioning and smooth paper feeding mechanism, significantly improving the operational efficiency and printing quality of large-format printing.

[0044] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A large-format double-sided printing machine, comprising a printing machine body (1), and a feeder unit (2) arranged inside the printing machine body (1), characterized in that: A longitudinal paper supply unit (3) is arranged inside the feeder unit (2), a transverse paper supply unit (4) is arranged on the side of the longitudinal paper supply unit (3), and the transverse paper supply unit (4) is used to supply paper to the longitudinal paper supply unit (3); The longitudinal paper feeding unit (3) comprises: A slide column (301), the slide column (301) is arranged inside the printing machine body (1), the side of the slide column (301) is slidably connected to a lifting platform (302), a receiving groove (303) is arranged inside the lifting platform (302), and first rollers (304) are arranged at the upper and lower ends of the receiving groove (303); a first motor (305), the first motor (305) being arranged on a side of the printing machine body (1), a rotating shaft (306) being arranged at an output end of the first motor (305), a side wall of the rotating shaft (306) being rotatably connected to the printing machine body (1), and a first sprocket (307) being arranged at the other end of the rotating shaft (306); A second sprocket (308), the second sprocket (308) being rotatably disposed on a side of the lifting platform (302); A chain belt (309), one end of which is fixedly connected to the inside of the printing machine body (1), the chain belt (309) is meshedly connected with the first sprocket (307) and the second sprocket (308), and the other end of the chain belt (309) is provided with a weighted portion (310).

2. A large-format double-sided printing machine according to claim 1, characterized in that: The transverse paper feeding unit (4) comprises: An outer frame (401), the outer frame (401) being arranged on a side of the printing machine body (1), a plurality of second rollers (402) being arranged inside the outer frame (401), the second rollers (402) being linked by a chain, and a second motor (403) being arranged on a side of the second roller (402); A positioning unit (404), wherein the positioning unit (404) is arranged inside the outer frame (401), and the positioning unit (404) is used to adjust the position of paper supply.

3. A large-format double-sided printing machine according to claim 2, characterized in that: The positioning unit (404) comprises: A plurality of double-headed screws (4041), wherein the double-headed screws (4041) are rotatably connected to the inside of the outer frame (401), and the double-headed screws (4041) are linked by a chain, and opposite threaded portions (4042) are provided at both ends of the double-headed screws (4041), and a positioning block (4043) is connected to the threaded portion (4042); A limit block (4044), wherein the limit block (4044) is arranged on the outer frame (401), and the limit block (4044) is slidably connected to the positioning block (4043); A third motor (4045), wherein the third motor (4045) is arranged on the side of the outer frame (401), and an output end of the third motor (4045) is connected to the double-headed screw (4041).

4. A large-format double-sided printing machine according to claim 3, characterized in that: The diameter of the middle portion of the second roller (402) is greater than the diameter of the middle portion of the double-headed screw (4041).

5. A large-format double-sided printing machine according to claim 1, characterized in that: A support ring (5) is provided at the bottom of the sliding column (301).

6. A large-format double-sided printing machine according to claim 1, characterized in that: The chain belt (309) is made of high-strength alloy steel.

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