Double-color flat plate offset press

Abstract

The utility model discloses a bicolor flat plate offset press, relates to the printing technical field, including offset press main part, clapboard, deflector, electric heating coil and drying storehouse, the offset press main part one end top is equipped with two drive motor, the bottom output end of drive motor is sleeved with connecting shaft, the number of connecting shaft is two, and the connecting shaft is equipped with the drying storehouse. The two connecting shafts are arranged in the drying bin, one ends of the bottoms of the two connecting shafts are sleeved with fan blades, the fan blades are arranged in the drying bin, printing paper enters the drying bin after being output through the two transmission shafts, and then the temperature in the drying bin can be increased under the action of a motor heating coil; and then the driving motor drives the fan blades in the partition plate to rotate through the rotating shaft, and the heated air in the drying bin can be blown to the surface of the printing paper below the partition plate under the driving of the fan blades, so that the ink on the surface of the printing paper is quickly dried, and the situation that the ink which is not dried completely exists on the surface of the printing paper is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a two-color flatbed offset printing machine. Background Art

[0002] An offset printing press is a type of lithographic printing press. During printing, the printed image is first printed from the printing plate onto a rubber cylinder, and then transferred to paper by the rubber cylinder. After searching, the Chinese patent authorization number CN208978421U discloses an energy-saving and environmentally friendly four-color flatbed offset printing press. The offset printing press can easily crush defective products during use. People will produce defective products during offset printing. After the defective products are placed into the feed port, they will be crushed by the blade, which can timely dispose of waste products and play an environmental protection role. However, during the use of the offset printing press, a small amount of ink that is not completely dried is likely to appear on the surface of the substrate after it is sent out from the output end of the offset printing press. When the ink that is not completely dried on the surface is subjected to external friction, the pattern or handwriting on the surface of the substrate will be blurred, thereby affecting its use. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the utility model provides a two-color flatbed offset printing machine, which solves the problem mentioned in the background technology that after printing, a small amount of undried ink will remain on the surface of the substrate, which may be easily blurred by external friction, causing the pattern or writing on the surface of the substrate to become blurred.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a two-color flatbed offset printing press, comprising a printing press body, a partition, a guide plate, an electric heating coil and a drying chamber, two drive motors are installed on the top of one end of the printing press body, and a connecting shaft is provided on the outside of the bottom output end of the drive motor. There are two connecting shafts, and the outside of one end of the bottom of the two connecting shafts is provided with fan blades, and the fan blades are provided inside the drying chamber. The drying chamber is located inside one end of the printing press body, and a partition is welded inside the drying chamber. Two transmission shafts are provided under the partition, and one side of the two transmission shafts is fixedly connected to the printing press body by bolts. The printed paper at the output end of the printing press body is located between the two transmission shafts, and guide plates are provided on both sides of the printed paper, so electric heating coils are installed at both ends of the partition.

[0005] Preferably, the electric heating coil is spiral-shaped and vertically distributed at both ends of the partition. The spiral electric heating coil is conducive to uniformly heating the air passing through the electric heating coil. The electric heating coil is electrically connected to the offset printing machine body for power supply, and the temperature is controlled by an external PLC controller.

[0006] Preferably, two circular holes corresponding to the fan blades are opened in the middle of the partition, and there is a gap between the two ends of the partition and the inner walls of the drying chamber, which is conducive to allowing the air at the bottom of the partition to rise through the gap between the two ends of the partition and the inner walls of the drying chamber.

[0007] Preferably, the two guide plates are arranged in an inclined shape, and one end of the bottom of the guide plate is in contact with the edges of both sides of the printing paper. The bottom edge of the guide plate is in a smooth chamfered shape. Due to the presence of the guide plate, the loss of heated air from the bottom of both sides of the drying chamber can be reduced, and at the same time, it can guide the air with residual heat.

[0008] Preferably, one end of the guide plate is rotatably connected to the inner wall of the drying chamber, and the other end of the guide plate is welded to one side of a worm gear. The worm gear is engaged with a worm, and both ends of the worm gear are rotatably connected to the outside of the offset printing machine body. A turntable is welded to the end of the worm gear. By rotating the turntable, the turntable can drive the worm gear to rotate, and the rotation of the worm gear can also drive the worm gear to rotate, which is conducive to the worm gear driving the guide plate inside the drying chamber to rotate, so that the bottom end of the guide plate can always fit with the edge of the paper, reducing the gap on both sides of the printed paper.

[0009] The utility model provides a two-color flatbed offset printing machine. It has the following beneficial effects:

[0010] (1) A two-color flatbed offset printing press. When the printing press is in use, after the printing paper is output through the two transmission shafts, it enters the drying chamber, and then the temperature inside the drying chamber is increased under the action of the motor heating coil, and then the motor is driven to drive the fan blades inside the partition to rotate through the rotating shaft. Driven by the fan blades, the heated air inside the drying chamber can be blown to the surface of the printing paper below the partition, thereby quickly drying the ink on the surface of the printing paper, which is beneficial to avoid the presence of undried ink on the surface of the printing paper.

[0011] (2) In a two-color flatbed offset printing machine, when the hot air flows through the surface of the printing paper, it will rise along the inner walls of the drying chamber through the guide plates on both sides of the printing paper. After rising, it will pass through the electric heating coil. The air with residual heat will quickly rise to the specified temperature after passing through the electric heating coil, which is conducive to improving the efficiency of air heating. The heated air will dry the surface of the printing paper again under the action of the fan blades, and the energy consumption of the offset printing machine will be reduced by utilizing the residual heat of the air.

[0012] This solves the problem that a small amount of undried ink may remain on the surface of the substrate after printing in the existing flatbed offset printing machine, which may cause the pattern or writing on the substrate surface to become blurred due to external friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 This is a rear view structural diagram of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the electric heating coil of the utility model;

[0017] Figure 5 This is a schematic diagram of the worm structure of the utility model.

[0018] In the figure, 1. Offset printing machine body; 2. Driving motor; 3. Connecting shaft; 4. Fan blades; 5. Partition; 6. Transmission shaft; 7. Printing paper; 8. Guide plate; 9. Electric heating coil; 10. Drying chamber; 11. Turntable; 12. Worm; 13. Worm gear. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Embodiment 1: A two-color flatbed offset printing machine, comprising an offset printing machine body 1, a partition 5, a guide plate 8, an electric heating coil 9 and a drying chamber 10. Two driving motors 2 are installed on the top of one end of the offset printing machine body 1, and a connecting shaft 3 is provided on the outside of the bottom output end of the driving motor 2. There are two connecting shafts 3, and the outside of the bottom end of the two connecting shafts 3 is provided with fan blades 4. The fan blades 4 are provided inside the drying chamber 10. The drying chamber 10 is located inside one end of the offset printing machine body 1. A partition 5 is welded inside the drying chamber 10. Two transmission shafts 6 are provided below the partition 5. One side of the two transmission shafts 6 is fixedly connected to the offset printing machine body 1 by bolts. The printing paper 7 at the output end of the offset printing machine body 1 is located between the two transmission shafts 6. Guide plates 8 are provided on both sides of the printing paper 7. Therefore, electric heating coils 9 are installed at both ends of the partition 5. The electric heating coils 9 are spiral-shaped and the ... The heating coil 9 is vertically distributed at both ends of the partition 5. The spiral electric heating coil is conducive to uniformly heating the air passing through the electric heating coil. Two circular holes corresponding to the fan blades 4 are opened in the middle of the partition 5, and there are gaps between the two ends of the partition 5 and the inner walls of the drying chamber 10 on both sides. When the printing machine is in use, after the printing paper 7 is output through the two transmission shafts 6, it will enter the drying chamber 10 under the traction of external equipment, and then the temperature inside the drying chamber 10 can be increased under the action of the motor heating coil, and then the motor 2 is driven to drive the fan blades 4 inside the partition 5 to rotate through the rotating shaft. Driven by the fan blades 4, the heated air inside the drying chamber 10 can be blown to the surface of the printing paper 7 under the partition 5, thereby quickly drying the ink on the surface of the printing paper 7, which is conducive to avoiding the presence of undried ink on the surface of the printing paper 7.

[0021] Embodiment 2: The two guide plates 8 are arranged in an inclined shape, and one end of the bottom of the guide plate 8 is in contact with the edges of both sides of the printing paper 7. The bottom edge of the guide plate 8 is in a smooth chamfered shape. One end of the guide plate 8 is rotatably connected to the inner wall of the drying chamber 10, and the other end of the guide plate 8 is welded to one side of the worm gear 13. The worm gear 13 is engaged with the worm 12. Both ends of the worm 12 are rotatably connected to the outside of the offset printing machine body 1, and a turntable 11 is welded to the end of the worm 12. When the hot air flow passes through the surface of the printing paper 7, it will pass through the guide plates 8 on both sides of the printing paper 7 and rise along the inner walls of the drying chamber 10 on both sides. After rising, it will pass through the electric heating coil 9, and the air with residual heat will pass through the electric heating coil 9. The electric heating coil 9 enables the temperature to rise to the specified temperature quickly, which is beneficial to improving the efficiency of air heating. The heated air dries the surface of the printing paper 7 again under the action of the fan blades 4, and reduces the energy consumption of the offset printing machine by utilizing the waste heat of the air. By rotating the turntable 11, the turntable 11 can drive the worm 12 to rotate. When the worm 12 rotates, it can drive the worm gear 13 to rotate, which is beneficial for the worm gear 13 to drive the guide plate 8 inside the drying chamber 10 to rotate, so that the bottom end of the guide plate 8 can always fit with the edge of the paper, reducing the gap on both sides of the printing paper 7.

[0022] Working principle: When the printing machine is in use, after the printing paper 7 is output through the two transmission shafts 6, it will enter the drying chamber 10, and then the temperature inside the drying chamber 10 will be increased under the action of the motor heating coil, and then the motor 2 will be driven to drive the fan blades 4 inside the partition 5 to rotate through the rotating shaft. Driven by the fan blades 4, the heated air inside the drying chamber 10 can be blown to the surface of the printing paper 7 under the partition 5, thereby quickly drying the ink on the surface of the printing paper 7, which is beneficial to avoid that there will be undried ink on the surface of the printing paper 7. When the hot air flow passes through the surface of the printing paper 7, it will pass through the guide plates 8 on both sides of the printing paper 7 and rise along the inner walls of the drying chamber 10 on both sides. After rising, it will pass through the electric heating coil 9. The air with waste heat will quickly rise to the specified temperature when passing through the electric heating coil 9, which is beneficial to improve the efficiency of air heating. The heated air will dry the surface of the printing paper 7 again under the action of the fan blades 4, and the energy consumption of the offset printing machine will be reduced by utilizing the waste heat of the air.

[0023] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0024] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A two-color flatbed offset printing press, characterized in that: The invention comprises an offset printing machine body (1), a partition (5), a guide plate (8), an electric heating coil (9) and a drying chamber (10), wherein two driving motors (2) are installed on the top of one end of the offset printing machine body (1), a connecting shaft (3) is provided on the outside of the bottom output end of the driving motor (2), two connecting shafts (3) are provided, and fan blades (4) are provided on the outside of the bottom end of each of the two connecting shafts (3), and the fan blades (4) are provided inside the drying chamber (10), and the drying chamber (10) is located inside one end of the offset printing machine body (1). A partition (5) is welded inside the drying chamber (10), and two transmission shafts (6) are provided below the partition (5), and one side of the two transmission shafts (6) is fixedly connected to the offset printing machine body (1) by bolts, and the printing paper (7) at the output end of the offset printing machine body (1) is located between the two transmission shafts (6), and guide plates (8) are provided on both sides of the printing paper (7), so that the electric heating coils (9) are installed at both ends of the partition (5).

2. The two-color offset printing press according to claim 1, characterized in that: The electric heating coil (9) is in a spiral shape, and the electric heating coil (9) is vertically distributed at both ends of the partition (5).

3. The two-color offset printing press according to claim 1, characterized in that: Two circular holes corresponding to the fan blades (4) are provided in the middle of the partition (5), and there are gaps between the two ends of the partition (5) and the inner walls of the drying chamber (10).

4. The two-color offset printing press according to claim 1, characterized in that: The two guide plates (8) are arranged in an inclined shape, and one end of the bottom of the guide plate (8) is in contact with the edges of both sides of the printing paper (7), and the bottom edge of the guide plate (8) is in a smooth chamfered shape.

5. The two-color offset printing press according to claim 1, characterized in that: One end of the guide plate (8) is rotatably connected to the inner wall of the drying chamber (10), and the other end of the guide plate (8) is welded to one side of a worm wheel (13). The worm wheel (13) is meshed with a worm (12). Both ends of the worm (12) are rotatably connected to the outside of the offset printing machine body (1), and a turntable (11) is welded to the end of the worm (12).

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