Adjustable anti-curling device for printing

Abstract

The utility model relates to the technical field of printing adjustable anti-curling devices, in particular to a printing adjustable anti-curling device which comprises a printing device, a guide roller B and a guide roller A are installed on the inner side of the printing device, and an anti-curling accessory is movably installed at the position, close to the guide roller A, of the inner side of the frame end of the printing device. The anti-rolling accessory comprises two movable rods rotationally installed on the inner side of the frame end of the printing equipment, inner inserting shafts are movably installed at the bottom ends of the two movable rods through guide grooves, smoothing rollers are rotationally installed at the bottom ends of the inner sides of the inner inserting shafts, and adjusting accessories are arranged at the positions, close to the transverse shaft ends of the movable rods, of the outer side of the frame end of the printing equipment. By arranging the anti-curl accessory, anti-curl operation on printing paper is achieved, the movable rod rotates to be matched with the inner inserting shaft to drive the smoothing roller to rotate, so that the distance between the smoothing roller and the guide pipe A is changed, downward pressure is applied to the paper through the smoothing roller, and the anti-curl device is suitable for the paper of different thicknesses and materials.

Description

Technical Field

[0001] This utility model relates to the technical field of adjustable anti-curling devices for printing, and in particular to an adjustable anti-curling device for printing. Background Technology

[0002] In the printing industry, paper curling is a common problem, especially in high-speed printing and long-term continuous operation. Curling not only leads to a decline in print quality, but also causes problems such as paper jams and machine downtime, which seriously affects production efficiency. Traditional printing equipment usually uses fixed anti-curling devices.

[0003] While these devices can alleviate the curling problem to some extent, they cannot be adjusted according to different paper types and printing conditions, limiting their applicability. Fixed anti-curling devices are difficult to adapt to paper of different thicknesses and materials, and when the paper edges are moist, curling is extremely likely to occur during printing, failing to meet diverse printing needs. Therefore, an adjustable anti-curling device is needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable anti-curling device for printing includes a printing machine. Guide roller B and guide roller A are installed inside the printing machine. An anti-curling accessory is movably installed on the inner side of the printing machine frame end near the guide roller A. The anti-curling accessory includes two movable rods rotatably installed on the inner side of the printing machine frame end. The bottom ends of the two movable rods are movably installed with an inner shaft through a guide groove, and a smoothing roller is rotatably installed on the inner bottom end of the inner shaft. An adjustment accessory is provided on the outer side of the printing machine frame end near the horizontal axis end of the movable rods.

[0007] Preferably, the top end of the inner insertion shaft is connected and fixed to the inner end face of the guide groove of the movable rod by a connecting spring.

[0008] Preferably, two side panels are movably mounted on the outer side of the inner shaft, and heating rollers are rotatably mounted on the inner side of the two side panels.

[0009] Preferably, one of the inner insert shafts has a disc end on its outer side, and a positioning pin is inserted into the outer side of the side plate through a threaded hole, with the shaft end of the positioning pin inserted into the disc end of the inner insert shaft through a positioning hole.

[0010] Preferably, the cross-section of the vertical end of the inner insertion shaft is cross-shaped, and one side of the movable rod is open-type.

[0011] Preferably, the adjusting accessory includes a positioning plate, wherein a circular protrusion is provided at the end of the horizontal shaft of one of the movable rods, and the circular protrusion is embedded in the inner side of the positioning plate through a circular groove and fixed by bolts.

[0012] Preferably, the top of the printing equipment frame is fixed with a plate frame by bolts, and the plate frame is symmetrically connected with suspension plates on its sides. The front of the suspension plate is provided with a threaded pin through a threaded hole, and the shaft end of the threaded pin is inserted into the surface of the positioning plate through a positioning hole.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. By setting anti-curling accessories, the printing paper can be prevented from curling. The rotation of the movable rod can drive the smoothing roller to rotate in conjunction with the inner insert shaft, thereby changing the distance between the smoothing roller and the guide tube A. The smoothing roller applies downward pressure to the paper, which can adapt to paper of different thicknesses and materials.

[0015] 2. By setting up side panels and heating rollers, the paper is pressed down, heated and smoothed. This device controls the temperature and humidity of the paper to reduce internal stress, keep the paper flat, thereby preventing the paper from curling and improving printing quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the external structure of a printable adjustable anti-rolling edge device proposed in this utility model.

[0018] Figure 2 This is a three-dimensional disassembly diagram of the anti-rolling component in a printable adjustable anti-rolling device proposed in this utility model.

[0019] Figure 3 This is a partial disassembly diagram of the anti-rolling component in a printable adjustable anti-rolling device proposed in this utility model.

[0020] Figure 4 This is a partial disassembly diagram of the adjusting accessories in the adjustable anti-rolling device for printing proposed in this utility model.

[0021] In the diagram: 1. Printing equipment; 2. Guide roller A; 3. Guide roller B; 4. Anti-rolling accessory; 41. Movable rod; 42. Inner shaft; 43. Smoothing roller; 44. Side plate; 45. Heating roller; 46. Connecting spring; 47. Positioning pin; 5. Adjusting accessory; 51. Positioning plate; 52. Plate frame; 53. Suspension plate; 54. Threaded pin. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Reference Figure 1-4 An adjustable anti-rolling device for printing includes a printing device 1. Guide rollers B3 and A2 are installed inside the printing device 1. An anti-rolling accessory 4 is movably installed on the inner side of the frame end of the printing device 1 near the guide rollers A2. The anti-rolling accessory 4 includes two movable rods 41 rotatably installed on the inner side of the frame end of the printing device 1. The bottom ends of the two movable rods 41 are movably installed with an inner insertion shaft 42 through guide grooves. A smoothing roller 43 is rotatably installed on the bottom inner side of the inner insertion shaft 42. An adjustment accessory 5 is provided on the outer side of the frame end of the printing device 1 near the horizontal axis end of the movable rods 41.

[0024] The top end of the inner shaft 42 is connected and fixed to the inner end face of the guide groove of the movable rod 41 by a connecting spring 46.

[0025] Two side panels 44 are movably mounted on the outer side of the inner shaft 42, and heating rollers 45 are rotatably mounted on the inner side of the two side panels 44.

[0026] One of the inner shafts 42 has a disc end on its outer side, and a positioning pin 47 is inserted into the outer side of the side plate 44 through a threaded hole, and the shaft end of the positioning pin 47 is inserted into the disc end of the inner shaft 42 through a positioning hole.

[0027] The vertical shaft end of the inner insertion shaft 42 has a cross-shaped cross-section, and one side of the movable rod 41 has an open design.

[0028] The adjusting accessory 5 includes a positioning plate 51, wherein a circular protrusion is provided at the end of the horizontal axis of one of the movable rods 41, and the circular protrusion is embedded in the inner side of the positioning plate 51 through a circular groove and fixed by bolts.

[0029] The top of the printing equipment 1 frame is fixed with a plate frame 52 by bolts, and the plate frame 52 is symmetrically connected with a suspension plate 53. The front of the suspension plate 53 is provided with a threaded pin 54 through a threaded hole, and the shaft end of the threaded pin 54 is inserted into the surface of the positioning plate 51 through a positioning hole.

[0030] By using the connecting spring 46 to buffer the movement of the inner insertion shaft 42, the smoothing roller 43 on the inner side of the inner insertion shaft 42 can be pressed down and rebound, effectively preventing the smoothing roller 43 from being too rigid and resulting in poor pressure effect. By rotating the side plate 44, the heating roller 45 can be moved, thereby changing the position of the heating roller 45, which facilitates the heating operation of damp paper. The heating roller 45, through heating and the cooperation of the guide roller A2, can make the fibers on the surface of the paper more compact, thereby maintaining the flatness of the paper.

[0031] Multiple positioning holes are provided around the outer side of the disc end of the inner insertion shaft 42. After the side display plate 44 is adjusted, the shaft end of the positioning pin 47 can be inserted into different positioning holes to achieve the stability of the side display plate 44 after adjustment. The vertical shaft end of the inner insertion shaft 42 and the guide groove of the movable rod 41 are adapted to slide, which can ensure the stability of the movement of the movable rod 41. Through the slot design on one side of the movable rod 41, the elasticity of the connecting spring 46 can be easily observed.

[0032] The horizontal axis end of the movable rod 41 is provided with a disc protrusion, which is bolted to the positioning plate 51. The two parts adopt a modular design, which can facilitate the disassembly and assembly of the positioning plate 51. After the positioning plate 51 is rotated and adjusted, the threaded pin 54 can be rotated and inserted into the positioning hole of the positioning plate 51 to fix the positioning plate 51. The design of two threaded pins 54 can improve the stability of the positioning plate 51 after rotation and adjustment.

[0033] The working principle of the printing press heating roller 45 is mainly based on electromagnetic induction heating technology. The principle of electromagnetic induction heating is as follows:

[0034] Power conversion: The heating control equipment is equipped with a 380V AC power supply, which is converted into a 20-40KHz high-frequency AC power after rectification, filtering and inversion.

[0035] Electromagnetic field generation: When connected to an electromagnetic heating coil, the rapidly changing current flowing through the electromagnetic coil will generate a rapidly changing magnetic field.

[0036] Eddy current generation: When magnetic field lines pass through the metal roller body, countless small eddy currents will be generated in the roller body due to the inherent resistance of the metal material of the roller body.

[0037] Heat generation: A large amount of heat energy causes the roller to heat up at high speed.

[0038] Temperature detection: The temperature measuring element in the heating roller 45 detects the temperature at different temperature measuring points on the surface, body and core of the roller and sends it to the temperature control instrument in the electrical control cabinet.

[0039] Temperature regulation: The control signal is input to the electromagnet via the data line. The temperature of the roller can be controlled in the control equipment to ensure the uniformity and stability of the temperature.

[0040] Induction coil: The induction coil is placed inside the roller body, and there is a certain safe distance between the coil and the end caps on both sides.

[0041] Eddy current effect: When an alternating current passes through an induction coil, an alternating magnetic field is generated around the coil. The magnetic lines of force in the alternating magnetic field form a loop from one magnetic pole through the object to be heated to another magnetic pole.

[0042] Heat exchange: Magnetic lines of force cut through the material and are heated, generating an induced electromotive force in the object, which in turn generates eddy currents. Due to the resistive characteristics of the heated object, the generated eddy currents cause the rollers to heat up according to the Joule-Lentz law.

[0043] Working principle: According to the appendix Figure 1 With appendix Figure 2 As shown, during printing, the paper passes between guide roller A2 and smoothing roller 43, then passes under guide roller B3 and is placed into the printing press. (According to the attached diagram...) Figure 4 As shown, when the positioning disk 51 is rotated, the positioning disk 51 can drive the movable rod 41 to rotate through the shaft end. The movable rod 41 can drive the smoothing roller 43 to move through the inner insertion shaft 42, so that the smoothing roller 43 presses down on the paper to a certain extent. At this time, the smoothing roller 43 cooperates with the guide roller A2 to apply pressure to the paper. When the paper moves, it can ensure flatness. After the positioning disk 51 is adjusted, the threaded pin 54 can be inserted into the positioning hole on the surface of the positioning disk 51 through the threaded hole of the suspension plate 53 for limiting.

[0044] Secondly, according to the appendix Figure 3 As shown, when the paper has a certain degree of moisture, the side panel 44 rotates, and the side panel 44 flips, which can drive the heating roller 45 to adhere to the paper surface. The heating roller 45 can evaporate the moisture in the paper, reduce the paper's humidity, and thus prevent the paper from curling due to excessive humidity. Under the coding of the external controller, the conduction temperature of the heating roller 45 can be customized. By changing the temperature of the heating roller 45, the temperature of the paper can be adjusted to keep it consistent with the ambient temperature, avoiding paper deformation caused by temperature difference. After the angle of the side panel 44 is adjusted, the external thread of the positioning pin 47 can be engaged with the threaded hole of the side panel 44, so that the shaft end of the positioning pin 47 is inserted into the positioning hole on the outer side of the bottom end of the inner insertion shaft 42, ensuring the stability of the side panel 44 after adjustment.

[0045] 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 principles of this 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 print-adjustable anti-curling device, comprising a printing device (1), a guide roller B (3) and a guide roller A (2) are installed inside the printing device (1), characterized in that, The printing equipment (1) is movably installed with an anti-winding accessory (4) near the position of the inner side of the frame end of the printing equipment (1) close to the guide roller A (2), the anti-winding accessory (4) comprises two movable rods (41) rotatably installed on the inner side of the frame end of the printing equipment (1), the bottom ends of the two movable rods (41) are movably installed with an inner inserting shaft (42) through a guide slot, and the inner side of the bottom end of the inner inserting shaft (42) is rotatably installed with a smoothing roller (43), and the outer side of the frame end of the printing equipment (1) is provided with an adjusting accessory (5) near the transverse shaft end of the movable rod (41).

2. A print-adjustable anti-curl device according to claim 1, wherein The top end of the inner inserting shaft (42) and the inner end surface of the guide slot of the movable rod (41) are connected and fixed through a connecting spring (46).

3. A print-adjustable anti-roll device according to claim 2, wherein, The outer side of the inner inserting shaft (42) is movably installed with two side spreading plates (44), and the inner side of the two side spreading plates (44) is rotatably installed with a heating roller (45).

4. A print-adjustable anti-curl device according to claim 3, wherein One of the outer sides of the inner inserting shaft (42) is provided with a disc end, the outer side of the side spreading plate (44) is inserted with a positioning pin (47) through a threaded hole, and the shaft end of the positioning pin (47) is inserted into the inner part of the disc end of the inner inserting shaft (42) through a positioning hole.

5. A print-adjustable anti-roll device according to claim 4, wherein, The vertical shaft end of the inner inserting shaft (42) is in a cross-shaped structure, and one side of the movable rod (41) is designed in an open type.

6. A print-adjustable anti-roll device according to claim 1, wherein, The adjusting accessory (5) comprises a positioning disc (51), one of the transverse shaft ends of the movable rod (41) is provided with a disc protrusion, and the disc protrusion is embedded in the inner side of the positioning disc (51) through a circular groove and is fixed through a bolt.

7. A print-adjustable anti-roll device according to claim 1, wherein, The top of the frame end of the printing equipment (1) is fixed with a plate frame (52) through a bolt, and the side of the plate frame (52) is symmetrically connected with a hanging plate (53), the front of the hanging plate (53) is inserted with a threaded pin (54) through a threaded hole, and the shaft end of the threaded pin (54) is inserted into the surface of the positioning disc (51) through a positioning hole.

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