Gravure printing machine with automatic edge cutting function

Abstract

The utility model relates to a photogravure press, and provides the photogravure press with the automatic edge cutting function, which comprises a frame, a printing station, a mounting seat and the like, a plurality of printing stations are evenly arranged on the upper portion of the frame at intervals and used for conveying, surface printing and drying of paper or film materials, the paper or the film materials are introduced from the printing station on the rightmost side and sequentially conveyed leftwards to pass through all the printing stations, and a mounting base is arranged on the upper left portion of the printing station on the leftmost side. According to the utility model, the independent cutters capable of accurately controlling the positions are arranged on the two sides of the transmission path of the film material or the paper to cut the edges of the material in order, the positions of the cutters can be automatically controlled according to the size, the texture and the cutting area of the material, accurate cutting is realized, manual adjustment by workers is not needed, the cutting accuracy and the production efficiency are obviously improved, and the production cost is reduced. And meanwhile, the labor cost and the operation difficulty are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gravure printing machine, especially a gravure printing machine with automatic edge cutting function. BACKGROUND

[0002] Gravure printing is a common printing process, which involves engraving images or text on a metal plate, filling ink into these recessed parts, and then transferring the ink to continuously transported paper or film materials, thereby achieving high-quality printing effects. In the modern printing industry, gravure printing is widely used in packaging, books, magazines and other fields, especially suitable for large-scale and high-quality printing needs.

[0003] In recent years, in order to improve production efficiency and printing quality, many gravure printing machines have begun to integrate automatic edge cutting function. The automatic edge cutting function can trim the edges of the printed materials neatly, remove excess corners, and ensure the beauty and consistency of the final product. This integrated solution not only improves production efficiency, but also reduces the error of manual operation. Although the automatic edge cutting function has been widely used in existing gravure printing machines, there are still some defects. The existing automatic edge cutting function can only adapt to specific materials and sizes, and frequent manual adjustment of equipment is required for different specifications of printed products. The edge cutting parameters and positions are relatively complicated, which affects the production efficiency of materials, increases the operation difficulty and time cost, and manual adjustment often depends on production experience. When adjusting, the positioning may deviate, resulting in inaccurate cutting position and ultimately affecting product quality. SUMMARY

[0004] In order to overcome the shortcomings of the existing gravure printing machine automatic edge cutting function, which can only adapt to specific materials and sizes, and frequent manual adjustment of equipment is required for different specifications of printed products. The edge cutting parameters and positions are relatively complicated, which affects the production efficiency of materials, increases the operation difficulty and time cost, and manual adjustment often depends on production experience. When adjusting, the positioning may deviate, resulting in inaccurate cutting position and ultimately affecting product quality. The purpose is to provide a precise cutting gravure printing machine without manual adjustment by workers, which significantly improves the cutting precision and production efficiency, while reducing the labor cost and operation difficulty.

[0005] The utility model discloses a technical scheme for a gravure printing machine with automatic edge cutting function, which comprises a frame, printing stations, mounting seats, feeding rollers, backing plates, transmission members, sliding blocks, electric cylinders, tool holders, cutting knives, a base and a winding roller. The upper part of the frame is evenly provided with a plurality of printing stations at intervals. The printing stations are used for the transmission, surface printing and drying of paper or film materials. The paper or film materials are introduced from the rightmost printing station and sequentially transmitted to the left through all the printing stations. The upper left part of the leftmost printing station is provided with a mounting seat. The upper and lower sides of the mounting seat are both rotatably provided with feeding rollers. The mounting seat is internally fixedly provided with a backing plate. The backing plate is located in the area between the two feeding rollers. When the paper or film materials are transmitted from the leftmost printing station, they are first laid down from the upper part of the upper feeding roller, then from the left side of the backing plate and finally from the lower feeding roller. The left part of the mounting seat is provided with transmission members on the front and back sides. The transmission members are both provided with sliding blocks. The sliding blocks move forward and backward through the transmission members. The sliding blocks are both provided with electric cylinders. The electric cylinders are arranged perpendicularly to the backing plate. The tool holders of the electric cylinders are provided with knife clamping grooves. The knife clamping grooves are both rotatably provided with cutting knives. The cutting knives move left and right under the drive of the electric cylinders. When the cutting knives move to the right, they will contact the left side of the backing plate. The left part of the frame is provided with a base. The base is provided with a winding roller, which is used for winding the paper or film materials introduced from the left by the feeding rollers.

[0006] As a preferred technical scheme of the utility model, the printing station comprises a control panel, an ink tank, a screen roller, a plate roller, a degreasing roller, a film transmission roller, a drying box and a film outlet roller. The front side of the printing station is provided with a control panel. The lower part of the printing station is provided with an ink tank. The lower part of the printing station is rotatably provided with a screen roller near the ink tank. The lower part of the printing station is rotatably provided with a plate roller near the screen roller. The lower part of the printing station is rotatably provided with a degreasing roller near the plate roller. The left part of the printing station is rotatably provided with a film transmission roller. The upper part of the printing station is provided with a drying box. The inside of the drying box is hollow. The drying box is provided with a heating element. The upper and lower sides of the drying box are both provided with notches for allowing materials to pass through. The drying box is provided with a transmission roller group. The left upper part of the inside of the printing station is rotatably provided with a film outlet roller.

[0007] As a preferred technical scheme of the utility model, the mounting seat is also provided with a material leading roller and a material winding roller. The lower part of the mounting seat is rotatably provided with a material leading roller. The left upper part of the mounting seat is rotatably provided with a material winding roller. The material winding roller is used for winding the cut waste materials.

[0008] As a preferred technical scheme of the utility model, the mounting seat is also provided with a pressing block. The sliding blocks are both provided with pressing blocks. The right side of the pressing block contacts the left side of the backing plate. The pressing blocks are both provided with inclined surfaces. The lowest point of the edge of the inclined surface is on the same line as the cutting knife of the same sliding block. When the paper or film materials are transmitted, they will slide over the inclined surface of the pressing block.

[0009] As a preferred technical scheme of the utility model, the mounting seat is also provided with a limiting block. The knife clamping groove of the tool holder is slidably provided with a limiting block.

[0010] As a preferred technical scheme of the utility model, it further comprises a discharging frame cover plate and a clamping seat, the mounting seat is provided with a discharging frame on both sides, the discharging frame is provided with a clamping seat, a plurality of missing grooves are uniformly formed in the clamping seat, the missing grooves are used for placing cutting knives, and the discharging frame is rotatably provided with a cover plate.

[0011] As a preferred technical scheme of the utility model, it further comprises a guide rail, a lifting seat and a supporting plate, the bottom base is provided with a guide rail, the guide rail is slidably provided with a lifting seat, the lifting seat is provided with a hydraulic part, the lifting seat is provided with a supporting plate, and the supporting plate is driven by the hydraulic part to move up and down.

[0012] Beneficial effects: the utility model discloses a cutting knife which is independently arranged on both sides of the transmission path of the film material or paper and can accurately control the position, so that the material edges are neatly cut, the cutting knife can automatically control the position according to the size and material quality of the material and the cutting area, precise cutting is realized, manual adjustment of workers is not needed, the cutting precision and production efficiency are remarkably improved, and the labor cost and operation difficulty are reduced.

[0013] The utility model discloses a limiting block arranged in the cutter holder clamping groove, the cutting knife is clamped by the limiting block, fast disassembly and fast installation are realized, the efficiency of replacing the cutting knife is improved, and the stability and safety of the cutting knife are ensured, and the reliability and maintenance convenience of the equipment are effectively improved.

[0014] The utility model discloses a spare frame of the cutting knife arranged on the mounting seat, a plurality of new cutting knives are centrally placed to prepare materials, when the cutting knife is replaced, the new cutting knife is directly taken, so that the cutting knife is replaced more conveniently and efficiently, downtime and maintenance cost are reduced, and production continuity and work efficiency are improved. DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0016] Figure 2 It is a three-dimensional structure schematic view of the printing station of the utility model.

[0017] Figure 3 It is a sectional view of part of the edge cutting mechanism of the utility model.

[0018] Figure 4 It is a plan view of the edge cutting part of the utility model.

[0019] Figure 5 It is a disassembling view of the cylinder, cutting knife and other parts of the utility model.

[0020] Figure 6 It is a plan view of the mounting seat, feeding roller and backing plate of the utility model.

[0021] Figure 7 It is a three-dimensional structural diagram of the winding mechanism and the lifting mechanism of the utility model.

[0022] Figure 8 It is a three-dimensional structural diagram of the material discharging frame, cover plate, card seat and other components of the utility model.

[0023] The markings in the figure are: 1-frame, 2-printing station, 21-control panel, 22-ink tank, 221-screen roller, 23-plate roller, 24-ink removal roller, 25-film transfer roller, 26-drying box, 27-film discharge roller, 3-mounting seat, 31-feed roller, 32-pad, 33-transmission part, 34-slider, 35-electric cylinder, 36-knife seat, 37-cutter, 4-base, 41-winding roller, 5-feeding roller, 51-winding roller, 6-pressing block, 7-limiting block, 8-discharging frame, 81-cover plate, 82-card seat, 9-guide rail, 91-lifting seat, 92-pallet. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.

[0025] Example 1: A gravure printing machine with automatic trimming function, such as Figures 1-8 As shown, it mainly consists of a frame 1, a printing station 2, a mounting base 3, a feed roller 31, a pad 32, a transmission member 33, a slider 34, an electric cylinder 35, a knife holder 36, a cutter 37, a base 4 and a winding roller 41, etc., realizing an integrated operation process from printing to trimming and then to winding;

[0026] The frame 1 serves as the supporting structure of the entire printing machine. A number of printing stations 2 are evenly spaced on its upper part. These stations are closely connected and together complete key processes such as paper or film material transportation, surface printing, and drying. The paper or film material is introduced from the printing station 2 on the far right, and then smoothly transported to the left along a preset path through each printing station 2 in turn, ensuring that each printing process can be completed accurately and without error.

[0027] A mounting base 3, the core of the trimming function, is cleverly positioned at the upper left of the leftmost printing station 2. Feed rollers 31 are rotatably mounted on both the upper and lower sides of the mounting base 3. These not only guide the paper or film material but also provide stable support for the subsequent trimming process through their rotational motion. A pad 32 is fixedly mounted within the mounting base 3, located precisely between the two feed rollers 31, providing a solid cutting reference surface for the cutter 37.

[0028] When the paper or film materials coming out from the leftmost printing station 2 are laid out, they will first pass over the upper part of the upper feed roller 31, then be laid downward close to the left side of the pad 32, and finally pass under the lower feed roller 31 and be led out to the left. During this process, the edge of the paper or film material is precisely positioned on the left side of the pad 32, preparing for the subsequent trimming operation.

[0029] Transmission parts 33 are provided on the front and rear sides of the left part of the mounting base 3. Through a precise mechanical structure, they drive the slider 34 to flexibly position and move in the front and rear directions. Electric cylinders 35 are installed on the slider 34. These electric cylinders 35 and the pad 32 are arranged perpendicular to each other, providing a powerful power source for the movement of the cutter 37. The end of the driving rod of the electric cylinder 35 is connected to the knife seat 36. The knife seat 36 is provided with a knife groove. The cutter 37 is embedded in this knife groove. When the electric cylinder 35 is started, it will drive the cutter 37 to move in the left and right directions to achieve precise trimming operation. When the cutter 37 moves to the right, it will be in close contact with the left surface of the pad 32, thereby ensuring the accuracy and flatness of the trimming.

[0030] The left portion of the frame 1 is further provided with a base 4, on which a winding roller 41 is mounted. This winding roller 41 is responsible for winding the printed and trimmed paper or film material that is led to the left from the feed roller 31, thereby ensuring the continuity and efficiency of the entire production process.

[0031] Among them, such as Figures 1-2As shown, the printing station 2 includes a control panel 21, an ink tank 22, a mesh roller 221, a plate roller 23, a cleaning roller 24, a film transfer roller 25, a drying box 26 and a film output roller 27, and is also equipped with a series of advanced printing and drying equipment. The control panel 21 is located on the front side of each printing station 2, which is convenient for the operator to monitor and adjust the printing process in real time. The lower part of the printing station 2 is provided with an ink tank 22. The mesh roller 221 is rotatably arranged near the ink tank 22. The plate roller 23 is rotatably arranged near the mesh roller 221. The cleaning roller 24 is rotatably arranged near the plate roller 23. The ink tank 22 stores the ink required for printing, and the ink is evenly applied to the plate roller 23 through the mesh roller 221. The plate roller 23 is engraved with exquisite patterns or characters, which can be accurately printed on the material surface when the paper or film passes through. The cleaning roller 24 is responsible for removing excess ink on the plate roller 23 to ensure the clarity and stability of the printing quality. The film transfer roller 25 is rotatably arranged on the left side of the printing station 2. The film transfer roller 25 and the film output roller 27 are responsible for the smooth transmission of paper or film in the printing station 2. The drying box 26 is arranged on the upper part of the printing station 2. The drying box 26 is hollow inside and is provided with a heating element and a material transfer roller group. It can quickly dry the paper or film printed in the same printing station 2 to ensure the firmness of the ink and the overall printing effect. The drying box 26 is provided with a gap on the upper and lower sides to allow the material to pass through. The drying box 26 is provided with a material transfer roller group. The film output roller 27 is rotatably arranged on the left upper side of the printing station 2. The film transfer roller 25 and the film output roller 27 are responsible for the smooth transmission of paper or film in the printing station 2 and the connection of the material in the next station.

[0032] In addition, in order to further improve the production efficiency and material utilization, the printing machine is additionally provided with a material guiding roller 5 and a material winding roller 51. The material guiding roller 5 is rotatably arranged on the lower part of the mounting seat 3, which is responsible for guiding the cut-off waste material to move downward. The material winding roller 51 is rotatably arranged on the upper left side of the mounting seat 3, which is responsible for winding the waste material, thereby realizing the automatic recycling of the waste material.

[0033] In embodiment 2, the design of the intaglio printing machine is further optimized and upgraded. The newly added components not only improve the overall performance of the equipment, but also greatly improve the production efficiency and operation convenience.

[0034] As Figure 4As shown, the pressing block 6 is additionally arranged on the sliding block 34, the right side of the pressing block 6 is in close contact with the left side of the backing plate 32, and a slope is arranged on the pressing block 6, the lowest edge of the slope is in the same line with the cutting knife 37 on the same sliding block 34, when the paper or film material is conveyed, it will smoothly slide along the slope surface of the pressing block 6, and a clamping angle is formed between the paper or film material and the backing plate 32 during the process, the existence of the clamping angle makes the cutting knife 37 cut into the material more easily and accurately, thereby improving the cutting precision and efficiency.

[0035] In addition, as shown in the drawings, Figure 5 The knife holder 36 is additionally provided with a limiting block 7 which is slidably arranged in the knife clamping groove, which greatly simplifies the replacement process of the cutting knife, and the limiting block 7 can clamp the cutting knife 37 to realize the functions of quick disassembly and limiting installation, so the operator does not need complicated tools or cumbersome steps, and only needs to pull out the limiting block 7 to quickly complete the replacement of the cutting knife 37, which not only improves the efficiency of replacing the cutting knife 37, but also ensures the stability and safety of the cutting knife 37 during cutting, and the existence of the limiting block 7 effectively prevents the cutting knife 37 from shaking or falling off during cutting, thereby improving the reliability and maintenance convenience of the equipment.

[0036] As shown in the drawings, Figure 1 and Figure 8 The mounting seat 3 is additionally provided with a material placing frame 8 on the front and rear sides, the material placing frame 8 is provided with a clamping seat 82, and a plurality of missing slots are uniformly arranged in the clamping seat 82, which are specially used for placing the cutting knife 37. Through this design, the operator can prepare a plurality of new cutting knives 37 in the material placing frame 8 in advance for material preparation when the equipment is running. When the cutting knife 37 needs to be replaced, the new cutting knife 37 can be directly taken out from the material placing frame 8 for replacement, without the need to additionally find or prepare the cutting knife 37, which greatly reduces the downtime and maintenance cost, improves the continuity and working efficiency of production, and the cover plate 81 is rotatably arranged on the material placing frame 8 to close the material placing frame 8 and protect the cutting knife 37 from dust or impurities, thereby ensuring the cleanliness and service life of the cutting knife 37.

[0037] Finally, as shown in the drawings, Figure 1 and Figure 7 The lower part of the base 4 is additionally provided with a guide rail 9 and a lifting seat 91, which makes the unloading of the film material on the winding roller 41 more convenient, the lifting seat 91 is slidably arranged on the guide rail 9 and can be adjusted in position according to actual needs, the lifting seat 91 is provided with a hydraulic part, and a supporting plate 92 is connected to the hydraulic part, the supporting plate 92 can be moved up and down through the driving of the hydraulic part, thereby easily lifting and unloading the film material on the winding roller 41, which not only reduces the labor intensity of the operator, but also improves the efficiency and safety of unloading the paper / film roll.

[0038] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A gravure printing machine with an automatic trimming function, comprising a frame (1); Its characteristics are: The frame (1) further comprises a printing station (2), a mounting seat (3), a feeding roller (31), a pad (32), a transmission member (33), a slider (34), an electric cylinder (35), a knife seat (36), a cutting knife (37), a base (4) and a winding roller (41). A plurality of printing stations (2) are evenly spaced on the upper part of the frame (1) for the transmission, surface printing and drying of paper or film materials. The paper or film material is introduced from the rightmost printing station (2) and sequentially transmitted to the left through all the printing stations (2). A mounting seat (3) is provided on the upper left part of the leftmost printing station (2). The upper and lower sides of the mounting seat (3) are both rotatable feeding rollers (31). A pad (32) is fixedly provided in the mounting seat (3). The pad (32) is located in the area between the two feeding rollers (31). When the paper or film material transmitted from the leftmost printing station (2) is laid out, it first passes over the upper part of the feeding roller (31) and then passes through the pad. The left side of the plate (32) is arranged downward, and finally leads to the left after passing the feeding roller (31) on the lower side. Transmission members (33) are provided on both the front and rear sides of the left part of the mounting seat (3). Slide blocks (34) are provided on the transmission members (33). The slide blocks (34) move in the front and rear directions through the transmission members (33). Electric cylinders (35) are provided on the slide blocks (34). The electric cylinders (35) and the pad (32) are arranged perpendicular to each other. The end of the driving rod of the electric cylinder (35) A knife seat (36) is provided, a knife slot is provided on the knife seat (36), a cutter (37) is embedded in the cutter slot, the cutter (37) is driven by the electric cylinder (35) driving rod to move in the left and right directions, and when the cutter (37) moves to the right, it will contact the left surface of the pad (32). A base (4) is provided on the left side of the frame (1), and a winding roller (41) is provided on the base (4) for winding the paper or film material led to the left from the feeding roller (31).

2. The gravure printing machine with automatic trimming function according to claim 1, characterized in that: The printing station (2) includes a control panel (21), an ink box (22), a screen roller (221), a plate roller (23), an ink removal roller (24), a film transfer roller (25), a drying box (26) and a film discharge roller (27). The front side of the printing station (2) is provided with a control panel (21). The lower part of the printing station (2) is provided with an ink box (22). The lower part of the printing station (2) is provided with a screen roller (221) in a rotatable manner near the ink box (22). The lower part of the printing station (2) is provided with a rotatable screen roller (221) in a rotatable manner near the screen roller (221). A plate roller (23) is provided, an ink removal roller (24) is rotatably provided at the lower part of the printing station (2) near the plate roller (23), a film transfer roller (25) is rotatably provided at the left part of the printing station (2), a drying box (26) is provided at the upper part of the printing station (2), the interior of the drying box (26) is hollow, a heating element is provided thereon, and notches are provided on the upper and lower sides of the drying box (26) for allowing materials to pass through, a material transfer roller group is provided in the drying box (26), and a film discharge roller (27) is rotatably provided at the upper left part of the inner side of the printing station (2).

3. The gravure printing machine with automatic trimming function according to claim 2, characterized in that: The utility model also comprises a material drawing roller (5) and a material winding roller (51), wherein the material drawing roller (5) is rotatably provided at the lower part of the mounting seat (3), and the material winding roller (51) is rotatably provided at the left side of the upper part of the mounting seat (3), and the material winding roller (51) is used for winding up the cut waste material.

4. The gravure printing machine with automatic trimming function according to claim 3, characterized in that: The invention also includes a pressing block (6), and each slider (34) is provided with a pressing block (6). The right side of the pressing block (6) contacts the left side of the pad (32). Each pressing block (6) is provided with an inclined surface, and the edge of the lowest point of the inclined surface is on the same line as the cutting knife (37) of the same slider (34). When the paper or film material is transmitted, it will slide over the inclined surface of the pressing block (6).

5. The gravure printing machine with automatic trimming function according to claim 4, characterized in that: It also includes a limiting block (7), and the limiting block (7) is slidably provided in the knife clamping groove of the knife seat (36).

6. The gravure printing machine with automatic trimming function according to claim 5, characterized in that: The utility model also comprises a material discharging frame (8), a cover plate (81) and a holder (82). The material discharging frame (8) is provided on both the front and rear sides of the mounting seat (3). The holder (82) is provided in the material discharging frame (8). A plurality of slots are evenly spaced in the holder (82). The slots are used to place the cutting knife (37). The material discharging frame (8) is rotatably provided with a cover plate (81).

7. The gravure printing machine with automatic trimming function according to claim 6, characterized in that: The utility model also comprises a guide rail (9), a lifting seat (91) and a supporting plate (92). The guide rail (9) is provided at the lower part of the base (4). The lifting seat (91) is slidably provided on the guide rail (9). A hydraulic component is provided in the lifting seat (91). The supporting plate (92) is provided on the hydraulic component of the lifting seat (91). The supporting plate (92) is driven by the hydraulic component to move up and down.

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