Blowing assembly for paper turning machine

Abstract

The utility model discloses a blowing assembly for a paper turning machine, which belongs to the technical field of paper turning machines and comprises a frame body, a printing cylinder and a transfer cylinder are rotatably connected onto the frame body, a conveying belt is mounted on the frame body, and paper is extruded and wound between the printing cylinder and the transfer cylinder and between the bottom of the transfer cylinder and the upper surface of the top output end of the conveying belt. And the air blowing mechanism comprises a fan, and the fan is installed on the frame body. According to the utility model, the blowing mechanism and the fan are arranged to work, the input end of the fan exhausts air in the air exhaust groove body and the air groove on the annular plate through the air exhaust pipe, and the air pressure is reduced after the air exhaust in the air exhaust groove body, so that a negative pressure adsorption effect is formed on paper on the air exhaust groove body through the belt hole at the output end of the conveying belt; the paper can be conveniently separated from the transfer cylinder to be adsorbed to the conveying belt, and the paper conveying effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of paper turning machine technology, and in particular relates to a blower assembly for a paper turning machine. Background Technology

[0002] A paper turning machine is a type of machine used in printing work, typically to flip paper to facilitate double-sided printing. Existing paper turning machines are not ideal for flipping larger sheets of paper, requiring multiple sets of paper feed rollers to complete the task, which reduces the speed of double-sided printing.

[0003] In the existing technology, the paper tail is blown onto the suction belt by the air nozzle, so that the paper is transported by the suction belt and the paper is flipped. In this method, the airflow cannot be blown directly from the transfer roller to the paper, which reduces the blowing effect on the paper, is not conducive to improving the stability of the paper leaving the transfer roller, and reduces the paper conveying efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a blowing assembly for a paper turning machine to solve the problem that in traditional technology, airflow cannot be directly blown from the transfer roller onto the paper, which reduces the blowing effect on the paper and is not conducive to improving the stability of the paper leaving the transfer roller.

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

[0006] A blower assembly for a paper turning machine includes:

[0007] A frame on which a printing cylinder and a transfer cylinder are rotatably connected, and a conveyor belt is installed on the frame, wherein paper is squeezed around the space between the printing cylinder and the transfer cylinder, and between the bottom of the transfer cylinder and the upper surface of the top output end of the conveyor belt;

[0008] A blower mechanism includes a blower mounted on a frame. The blower's input end is connected to an extraction pipe, and its output end is connected to an outlet pipe. An extraction trough is fixedly connected to the frame. The top of the extraction trough is sealed and slides against the lower surface of the top output end of the conveyor belt, and is located directly below the transfer cylinder. The output end of the conveyor belt has multiple holes. The end of the extraction pipe away from the blower is connected to the interior of the extraction trough. The top of the extraction trough is connected to some of the holes. The transfer cylinder has a cavity. One end of the cavity is rotatably connected to a first rotary venting connector. The venting end of the first rotary venting connector is connected to the end of the outlet pipe away from the blower. The transfer cylinder wall has multiple through holes. The ends of the through holes away from the outside are connected to the interior of the cavity.

[0009] Preferably, a support net is fixedly connected to the top of the air extraction trough, and the top of the support net slides against the lower surface of the top output end of the conveyor belt.

[0010] Preferably, the plurality of the belt holes are arranged in a rectangular array on the output end of the conveyor belt, and the plurality of the cylinder holes are arranged in a circular array on the wall of the transfer cylinder, with the portion of the belt holes that contact the same paper corresponding one-to-one with the portion of the cylinder holes.

[0011] Preferably, a fixed shaft is fixedly connected to the frame, one end of which coaxially extends into the transfer cylinder and is fixedly connected to an annular plate. The outer periphery of the annular plate is coaxially sealed and rotated with the periphery of the transfer cylinder. An opening is provided through the bottom of the annular plate, the top of which communicates with the inside of the cylinder cavity, and the bottom of which communicates with a portion of the cylinder hole located directly above the suction trough.

[0012] Preferably, an air groove is provided on the outer side of the annular plate, and the air groove is connected to a portion of the cylinder hole located between the printing cylinder and the transfer cylinder. A shaft cavity is coaxially provided inside the fixed shaft, one end of which is connected to the inside of the air groove, and the other end is rotatably connected to a second rotary venting connector. The venting end of the second rotary venting connector is connected to the end of the exhaust pipe away from the fan.

[0013] Preferably, the extraction pipe is a three-way pipe, and a proportional valve is installed at the three-way position. The proportional valve is used to control the working pressure of the extraction pipe at both ends away from the fan.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this utility model, by setting a blower mechanism, the blower operates, and its input end draws air into the inside of the air extraction groove and the air groove on the annular plate through the air extraction pipe. After the air is drawn into the air extraction groove, the air pressure decreases, thereby creating a negative pressure adsorption effect on the paper on the conveyor belt through the belt hole at the output end of the conveyor belt, which facilitates the paper to be detached from the transfer cylinder and adsorbed onto the conveyor belt; and the blower output end blows air into the cylinder cavity through the air outlet pipe and the first rotary vent connector. The airflow blows out of the transfer cylinder through the cylinder hole, thereby creating a blowing effect on the paper on the transfer cylinder, which is conducive to the paper detaching from the transfer cylinder and improving the paper conveying effect.

[0016] 2. In this utility model, by setting an annular plate, the airflow in the cylinder cavity is only blown out of the transfer cylinder through the opening of the annular plate and the corresponding cylinder hole under the obstruction of the annular plate, forming a blowing effect on the paper at the bottom of the transfer cylinder, improving the targeting of the blowing of the paper, reducing the waste of airflow output in other directions, and enhancing work efficiency.

[0017] 3. In this utility model, by setting an air groove, the air pressure is reduced after the air is drawn out of the air groove. A negative pressure adsorption effect is formed on the paper located between the printing cylinder and the transfer cylinder through the corresponding cylinder hole, which is conducive to the transfer of paper from the printing cylinder to the transfer cylinder and improves the paper conveying effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the other side of the structure of this utility model;

[0020] Figure 3 This is a vertical sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the annular plate structure of this utility model.

[0022] In the diagram: 1. Frame, 2. Transfer cylinder, 3. Conveyor belt, 4. Fan, 5. Extraction pipe, 6. Exhaust pipe, 7. Extraction trough, 8. Support net, 9. Perforated section, 10. Cylinder cavity, 11. First rotary ventilation joint, 12. Cylinder hole, 13. Fixed shaft, 14. Annular plate, 15. Opening, 16. Air groove, 17. Shaft cavity, 18. Second rotary ventilation joint. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-4 A blower assembly for a paper turning machine, comprising:

[0025] The frame 1 has a printing cylinder and a transfer cylinder 2 rotatably connected to it. A conveyor belt 3 is installed on the frame 1, through which paper is squeezed and passes between the printing cylinder and the transfer cylinder 2, as well as between the bottom of the transfer cylinder 2 and the top output end of the conveyor belt 3.

[0026] The blower mechanism includes a blower 4, which is mounted on a frame 1. The blower 4 has an input end connected to an exhaust pipe 5 and an output end connected to an exhaust pipe 6. An exhaust trough 7 is fixedly connected to the frame 1. The top of the exhaust trough 7 is sealed and slides against the lower surface of the top output end of the conveyor belt 3 and is located directly below the transfer cylinder 2. The output end of the conveyor belt 3 has multiple holes 9. The end of the exhaust pipe 5 away from the blower 4 is connected to the inside of the exhaust trough 7. The top of the exhaust trough 7 is connected to some of the holes 9. The transfer cylinder 2 has a cylinder cavity 10. One end of the cylinder cavity 10 is rotatably connected to a first rotary venting connector 11. The venting end of the first rotary venting connector 11 is connected to the end of the exhaust pipe 6 away from the blower 4. The cylinder wall of the transfer cylinder 2 has multiple cylinder holes 12. The end of the cylinder hole 12 away from the outside is connected to the inside of the cylinder cavity 10.

[0027] A support net 8 is fixedly connected to the top of the air extraction tank 7. The top of the support net 8 slides against the lower surface of the top output end of the conveyor belt 3. The support net 8 is used to support the output end of the conveyor belt 3 and prevent it from sinking.

[0028] Multiple perforated holes 9 are arranged in a rectangular array on the output end of the conveyor belt 3, and multiple cylindrical holes 12 are arranged in a circular array on the wall of the transfer cylinder 2. The portion of the perforated holes 9 that contacts the same paper corresponds one-to-one with the portion of the cylindrical holes 12.

[0029] A fixed shaft 13 is fixedly connected to the frame 1. One end of the fixed shaft 13 extends coaxially into the transfer cylinder 2 and is fixedly connected to an annular plate 14. The outer periphery of the annular plate 14 is coaxially sealed and rotated with the periphery of the transfer cylinder 2. An opening 15 is opened through the bottom of the annular plate 14. The top of the opening 15 is connected to the inside of the cylinder cavity 10, and the bottom is connected to a portion of the cylinder hole 12 located directly above the air extraction tank 7.

[0030] An air groove 16 is provided on the outer side of the annular plate 14. The air groove 16 is connected to a portion of the cylinder hole 12 located between the printing cylinder and the transfer cylinder 2. A shaft cavity 17 is coaxially provided inside the fixed shaft 13. One end of the shaft cavity 17 is connected to the inside of the air groove 16, and the other end is rotatably connected to a second rotary venting connector 18. The venting end of the second rotary venting connector 18 is connected to the end of the exhaust pipe 5 away from the fan 4.

[0031] Both the first rotary venting connector 11 and the second rotary venting connector 18 employ existing technology to achieve ventilation while rotating.

[0032] The exhaust pipe 5 is a three-way pipe, and a proportional valve is installed at the three-way position. Using existing technology, the proportional valve is used to control the working pressure at both ends of the exhaust pipe 5 away from the fan 4, so as to facilitate the control of the negative pressure adsorption effect on the paper.

[0033] The operating principle of this utility model is described as follows:

[0034] During operation, the paper is conveyed out and passes over the top of the printing cylinder for printing. Then it passes between the printing cylinder and the transfer cylinder 2, and then between the bottom of the transfer cylinder 2 and the top output end of the conveyor belt 3. The paper is flipped 180° and finally output by the conveyor belt 3 for easy flip printing.

[0035] During the paper conveying process, the blower 4 works, and its input end draws air from the inside of the air extraction tank 7 and the air groove 16 on the annular plate 14 through the air extraction pipe 5. After the air is drawn from the inside of the air extraction tank 7, the air pressure decreases, thereby forming a negative pressure adsorption effect on the paper through the belt hole 9 at the output end of the conveyor belt 3, which makes it easier for the paper to be separated from the transfer cylinder 2 and adsorbed onto the conveyor belt 3, thus facilitating the paper to be conveyed.

[0036] When the blower 4 is working, its output end blows air into the cylinder cavity 10 through the air outlet pipe 6 and the first rotary ventilation joint 11. The airflow blows out of the transfer cylinder 2 through the cylinder hole 12, thereby creating a blowing effect on the paper on the transfer cylinder 2, which is conducive to the paper being removed from the transfer cylinder 2 and improves the paper conveying effect.

[0037] Meanwhile, under the obstruction of the annular plate 14, the airflow in the cylinder cavity 10 is blown out of the transfer cylinder 2 only through the opening 15 and the corresponding cylinder hole 12 of the annular plate 14, forming a blowing effect on the paper at the bottom of the transfer cylinder 2, improving the targeting of the paper blowing, reducing the waste of airflow output in other directions, and enhancing work efficiency.

[0038] At the same time, the air pressure in the air groove 16 is reduced after the air is drawn out, and a negative pressure adsorption effect is formed on the paper located between the printing cylinder and the transfer cylinder 2 through the corresponding cylinder hole 12, which is conducive to the transfer of paper from the printing cylinder to the transfer cylinder 2 and improves the paper conveying effect.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A blower assembly for a paper turning machine, characterized in that, include: A frame (1) is rotatably connected to a printing cylinder and a transfer cylinder (2). A conveyor belt (3) is installed on the frame (1). Paper is squeezed around the printing cylinder and the transfer cylinder (2) and between the bottom of the transfer cylinder (2) and the top output end of the conveyor belt (3). The blower mechanism includes a blower (4), which is mounted on a frame (1). The blower (4) has an input end connected to an air extraction pipe (5) and an output end connected to an air outlet pipe (6). An air extraction groove (7) is fixedly connected to the frame (1). The top of the air extraction groove (7) is sealed and slides against the lower surface of the top output end of the conveyor belt (3) and is located directly below the transfer cylinder (2). The output end of the conveyor belt (3) has multiple holes (9). The air extraction pipe (5) is located away from the blower. (4) One end is connected to the inside of the air extraction tank (7), the top of the air extraction tank (7) is connected to a part of the perforated (9), the transfer cylinder (2) has a cylinder cavity (10), one end of the cylinder cavity (10) is rotatably connected to a first rotary venting connector (11), the venting end of the first rotary venting connector (11) is connected to the end of the air outlet pipe (6) away from the fan (4), the cylinder wall of the transfer cylinder (2) has multiple cylinder holes (12) through it, the end of the cylinder hole (12) away from the outside is connected to the inside of the cylinder cavity (10).

2. The blowing assembly for a paper turning machine according to claim 1, characterized in that, in: A support net (8) is fixedly connected to the top of the air extraction tank (7), and the top of the support net (8) slides against the lower surface of the top output end of the conveyor belt (3).

3. The blowing assembly for a paper turning machine according to claim 1, characterized in that, in: Multiple of the belt holes (9) are arranged in a rectangular array on the output end of the conveyor belt (3), and multiple of the cylinder holes (12) are arranged in a circular array on the cylinder wall of the transfer cylinder (2). The portion of the belt holes (9) that are in contact with the same paper corresponds one-to-one with the portion of the cylinder holes (12).

4. The blowing assembly for a paper turning machine according to claim 1, characterized in that, in: A fixed shaft (13) is fixedly connected to the frame (1). One end of the fixed shaft (13) is coaxially inserted into the transfer cylinder (2) and is fixedly connected to an annular plate (14). The outer periphery of the annular plate (14) is coaxially sealed and rotated with the periphery of the transfer cylinder (2). An opening (15) is opened through the bottom of the annular plate (14). The top of the opening (15) is connected to the inside of the cylinder cavity (10), and the bottom is connected to a portion of the cylinder hole (12) located directly above the suction trough (7).

5. A blower assembly for a paper turning machine according to claim 4, characterized in that, in: An air groove (16) is provided on the outer side of the annular plate (14). The air groove (16) is connected to a portion of the cylinder hole (12) located between the printing cylinder and the transfer cylinder (2). A shaft cavity (17) is coaxially provided inside the fixed shaft (13). One end of the shaft cavity (17) is connected to the inside of the air groove (16), and the other end is rotatably connected to a second rotary vent joint (18). The venting end of the second rotary vent joint (18) is connected to the end of the exhaust pipe (5) away from the fan (4).

6. The blowing assembly for a paper turning machine according to claim 5, characterized in that, in: The extraction pipe (5) is a three-way pipe, and a proportional valve is installed at the three-way position. The proportional valve is used to control the working pressure at both ends of the extraction pipe (5) away from the fan (4).

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