A vacuum printing air extraction device

Abstract

The application discloses a kind of air exhaust device for vacuum printing, it is related to vacuum printing technical field, including first vacuum pump group, the inside of connecting bin is provided with negative pressure shake position piece, the inside of connecting bin is connected with small hole filter plate by negative pressure shake position piece, the inside of extension bin is provided with barrier unit.The application is provided with negative pressure shake position piece, when the inside of third vacuum air pipe is in negative pressure state, sleeve will move away from the direction of annular block under the action of pressure, so as to make iron block and electromagnet adhere to adsorb, at the same time, sleeve and sealing plug rod are separated, when three bins are completed, pump body is closed, at this time, small hole filter plate will move quickly to the air exhaust end of third vacuum air pipe under the action of elastic restoring force of first extension spring, when small hole filter plate stops moving, impurities on the surface of small hole filter plate will be separated from small hole filter plate under the action of inertia, so as to prevent impurities from accumulating on the surface of small hole filter plate and affecting the efficiency of vacuumizing.

Description

Technical Field

[0001] This invention relates to the field of vacuum printing technology, specifically to a vacuum printing vacuum pumping device. Background Technology

[0002] The vacuum pumping unit in vacuum printing equipment is the core power system that ensures precise and controllable vacuum environment and stable and reliable printing process. It is specifically designed with a three-compartment partitioned structure consisting of a feeding chamber, a plugging chamber, and a discharging chamber. This allows for rapid establishment, stable maintenance, and flexible switching of vacuum levels within each chamber, adapting to various vacuum printing processes such as resin plugging, flexible circuit printing, and high-precision screen printing. Following the production flow, the three chambers are arranged from front to back: the feeding chamber, the plugging chamber, and the discharging chamber. These three chambers can be both isolated and interconnected. Combined with a telescopic loading and unloading mechanism, a CCD alignment structure, and a vacuum pumping structure, it ensures a vacuum state in the plugging chamber while simultaneously enabling automated, unidirectional, continuous product flow from alignment to plugging to discharging.

[0003] During the vacuuming process of the three chambers, some air may carry printing dust and ink particles into the pipes, causing wear on the vacuum pump and blockage of the pipes. At the same time, in the initial stage of vacuuming, the air in the chamber may form a local vortex zone near the air extraction port, which will cause the vacuum degree at the far end of the chamber to be delayed, affecting the elimination of resin bubbles or the curing quality of ink. Summary of the Invention

[0004] The purpose of this invention is to provide a vacuum printing vacuum pumping device to solve the problems that impurities easily enter the pipe and air easily forms a local vortex zone near the air extraction port during vacuuming.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vacuum printing vacuum pumping device, comprising a first vacuum pump group, a second vacuum pump group installed on one side of the first vacuum pump group, a third vacuum pipe connected to one end of the first vacuum pump group, a second vacuum pipe connected to one end of the second vacuum pump group, a first vacuum pipe disposed between the third vacuum pipe and the second vacuum pipe, the third vacuum pipe, the second vacuum pipe, and the first vacuum pipe being in a state of mutual communication, and a vacuum pneumatic valve disposed on each of the third vacuum pipe, the second vacuum pipe, and the first vacuum pipe. Each of the two vacuum pump sets contains an auxiliary pump with a low pumping speed and a main pump with a high pumping speed. An exhaust pipe is installed on one side of the second vacuum pump set. One end of the third vacuum pipe, the first vacuum pipe, and the second vacuum pipe is connected to the feed chamber, the plug chamber, and the discharge chamber, respectively. A connecting chamber is installed at one end of each of the third vacuum pipe, the first vacuum pipe, and the second vacuum pipe. A negative pressure swaying component is provided inside the connecting chamber. A small-hole filter plate is connected to the inside of the connecting chamber through the negative pressure swaying component. An extension chamber located below the third vacuum pipe is installed on the outer wall of the connecting chamber. A barrier unit is provided inside the extension chamber.

[0006] The negative pressure oscillating component includes a corrugated telescopic tube installed on the inner wall of the connecting chamber. An annular plate is installed at one end of the corrugated telescopic tube near the air inlet of the third vacuum pipe. A perforated filter plate is connected to the inner wall of the annular plate. A first telescopic spring connected to the inner wall of the connecting chamber is provided at one end of the annular plate. A splicing rod located inside the corrugated telescopic tube is installed at one end of the perforated filter plate. An extension rod arranged parallel to the splicing rod is provided at one end of the perforated filter plate. An annular block is installed on the inner wall of the third vacuum pipe. An iron block is installed at one end of the annular block near the perforated filter plate. An iron block is installed at one end of the extension rod near the annular block.

[0007] As a further embodiment of the present invention: the negative pressure swaying component further includes a movable plate installed on the end of the splicing rod away from the small-hole filter plate, the annular block is located between the small-hole filter plate and the movable plate, a sealing plug rod is installed on the end of the annular block away from the electromagnet, a sleeve is movably sleeved on the sealing plug rod, a movable plate is provided on the outer wall of the sleeve, a connecting plate is installed on the end of the movable plate away from the annular block, and a turbulence centrifugal component is provided on the connecting plate.

[0008] As a further embodiment of the present invention: the diameter of the movable plate is equal to the diameter of the inner wall of the third vacuum tube, and the maximum distance between the iron block and the electromagnet is equal to the length of the sleeve.

[0009] As a further embodiment of the present invention: the inner diameter of the annular block is larger than the diameter of the vacuum pneumatic valve and smaller than the diameter of the movable plate.

[0010] As a further embodiment of the present invention: the turbulence centrifugal component includes a connecting sleeve installed at one end of a connecting plate, a push plug extending to the outside of the connecting sleeve is inserted inside the connecting sleeve, a positioning plate is installed at one end of the push plug, an elastic sheet is provided on the inner wall of the connecting sleeve, a first contact piece is installed at one end of the elastic sheet, a second contact piece flush with the first contact piece is installed at one end of the push plug, an L-shaped positioning frame is provided at the bottom of the end of the sleeve away from the movable plate, a rotating shaft is rotatably connected to one end of the L-shaped positioning frame via a bearing, a cross rotating plate is connected to the outside of the rotating shaft, a turntable is installed at one end of the cross rotating plate, a piston cylinder is provided on the outside of the turntable, a piston extending to the outside of the piston cylinder is inserted inside the piston cylinder, a third telescopic spring connected to the inner wall of the piston cylinder is provided on the outside of the piston, a diagonal connecting rod is rotatably connected to one end of the piston via a rotating shaft, a rotating plate is rotatably connected to one end of the diagonal connecting rod via a rotating shaft, and a positioning plate is rotatably connected to one end of the rotating plate via a bearing.

[0011] As a further aspect of the present invention: the first contact is electrically connected to the power supply of the vacuum printing equipment via a wire, and the second contact is connected to a warning light connected to the vacuum printing equipment via a wire.

[0012] As a further aspect of the present invention: the maximum distance from the center of the rotating shaft to the edge of the cross plate is equal to the distance from the center of the rotating shaft to the center of the sleeve.

[0013] As a further embodiment of the present invention: the barrier unit includes a first barrier plate slidably connected to the inner side of the extension chamber, the first barrier plate has a slot inside, the inner wall of the slot is provided with a second telescopic spring, one end of the second telescopic spring is provided with a plug extending to the outside of the slot, one end of the plug is connected to the second barrier plate, and the top of the first barrier plate near the second barrier plate is provided with a connecting frame connected to the annular plate.

[0014] As a further aspect of the present invention: the length of the first barrier plate is greater than the length of the sleeve, and the width of the first barrier plate and the second barrier plate is equal to the width of the inner wall at the bottom of the connecting compartment.

[0015] As a further embodiment of the present invention: the sleeve is a hollow cylindrical structure without a top or bottom.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. By setting a negative pressure swaying component, when the inside of the third vacuum tube is under negative pressure, the sleeve will move away from the annular block under the pressure, so that the iron block can be attached to the electromagnet and attracted. At the same time, the sleeve separates from the sealing plug rod. When the three chambers are vacuumed and the pump body is turned off, the electromagnet is de-energized at the same time, so that the iron block loses its attraction force. At this time, the small hole filter plate will move quickly towards the air extraction end of the third vacuum tube under the elastic restoring force of the first extension spring. When the small hole filter plate stops moving, the impurities on the surface of the small hole filter plate will separate from the small hole filter plate under the action of inertia, and fall to the bottom of the connecting chamber under its own gravity. This can prevent impurities from accumulating on the surface of the small hole filter plate and affecting the vacuuming efficiency.

[0018] 2. By setting up a turbulent centrifugal component, when air is discharged through the sleeve, the cross plate will obstruct the air to a certain extent. At this time, the air will blow the cross plate to rotate when it is discharged from the sleeve. Since the diameter of the sleeve is smaller than the diameter of the third vacuum tube and the pumping power remains unchanged, the air velocity passing through the sleeve will increase, thereby making the cross plate rotate quickly. At the same time, the piston will move away from the turntable due to the centrifugal force generated by the rotation of the turntable, so that the second contact plate contacts the first contact plate. At this time, the lamp on the vacuum printing equipment will light up, which indicates that the filter holes on the small hole filter plate are not blocked over a large area. By observing whether the lamp on the vacuum printing equipment lights up when the vacuum is first drawn, it can be determined whether the small hole filter plate needs to be replaced. During this process, the rotation of the cross plate is used to turbulent the air inside the third vacuum tube, thereby preventing the air from forming eddies inside the third vacuum tube.

[0019] 3. By setting up a barrier unit, when the perforated filter plate is in its initial state, there is a gap between one end of the perforated filter plate and the inner wall of the connecting chamber. At the same time, the second barrier plate is separated from the first barrier plate. When the perforated filter plate moves toward the annular block, it will drive the first barrier plate to move synchronously through the annular plate and the connecting frame. When the second barrier plate contacts the inner wall of the other side of the connecting chamber, the perforated filter plate continues to move, which will cause the first barrier plate to squeeze the second telescopic spring, thereby making the first barrier plate and the second barrier plate fit together. This can prevent impurities in the connecting chamber from moving back to one end of the perforated filter plate under the action of negative pressure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram showing the connection between the third vacuum tube and the connecting chamber of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the third vacuum tube of the present invention;

[0023] Figure 4 This is a schematic diagram showing the connection between the perforated filter plate and the movable plate of the present invention;

[0024] Figure 5 This is a schematic diagram showing the connection between the first barrier plate and the second barrier plate of the present invention;

[0025] Figure 6 This is a schematic diagram showing the connection between the annular block and the sealing plug rod of the present invention;

[0026] Figure 7 This is a schematic diagram showing the connection between the movable plate and the connecting sleeve of the present invention;

[0027] Figure 8 This is a schematic diagram showing the connection between the rotating shaft and the rotating plate of the present invention;

[0028] Figure 9 This is a schematic diagram showing the connection between the rotating plate and the turntable of the present invention;

[0029] Figure 10 This is a schematic diagram of the temporal structure of the connecting sleeve of the present invention.

[0030] In the diagram: 1. First vacuum pump unit; 2. Second vacuum pump unit; 3. Exhaust pipe; 4. Pneumatic vacuum valve; 5. First vacuum pipe; 6. Second vacuum pipe; 7. Third vacuum pipe; 8. Connecting chamber; 9. Extension chamber; 10. Annular block; 11. Corrugated telescopic pipe; 12. Annular plate; 13. First telescopic spring; 14. Splicing rod; 15. Small-hole filter plate; 16. First barrier plate; 17. Second telescopic spring; 18. Insert rod; 19. Second barrier plate; 20. Movable plate; 1. Electromagnet; 22. Iron block; 23. Extension rod; 24. Connecting frame; 25. Sleeve; 26. Connecting plate; 27. Slot; 28. Sealing plug rod; 29. ​​L-shaped positioning frame; 30. Rotary coupling; 31. Cross plate; 32. Connecting sleeve; 33. Positioning plate; 34. Rotating plate; 35. Diagonal connecting rod; 36. Piston; 37. Turntable; 38. Piston cylinder; 39. Third telescopic spring; 40. First contact piece; 41. Second contact piece; 42. Elastic piece; 43. Push plug. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0033] Please see Figures 1-10 In this embodiment of the invention, a vacuum printing vacuum pumping device includes a first vacuum pump group 1, a second vacuum pump group 2 installed on one side of the first vacuum pump group 1, a third vacuum pipe 7 connected to one end of the first vacuum pump group 1, a second vacuum pipe 6 connected to one end of the second vacuum pump group 2, a first vacuum pipe 5 disposed between the third vacuum pipe 7 and the second vacuum pipe 6, and the third vacuum pipe 7, the second vacuum pipe 6, and the first vacuum pipe 5 being interconnected. Each of the third vacuum pipe 7, the second vacuum pipe 6, and the first vacuum pipe 5 is equipped with a vacuum pneumatic valve 4. The first vacuum pump group 1 and the second vacuum pump group... Each of the two vacuum pump units contains an auxiliary pump with a low pumping speed and a main pump with a high pumping speed. An exhaust pipe 3 is installed on one side of the second vacuum pump unit 2. One end of the third vacuum pipe 7, the first vacuum pipe 5, and the second vacuum pipe 6 is connected to the feed chamber, the plug chamber, and the discharge chamber, respectively. A connecting chamber 8 is installed at one end of the third vacuum pipe 7, the first vacuum pipe 5, and the second vacuum pipe 6. A negative pressure swaying component is provided inside the connecting chamber 8. A small hole filter plate 15 is connected to the inside of the connecting chamber 8 through the negative pressure swaying component. An extension chamber 9 located below the third vacuum pipe 7 is installed on the outer wall of the connecting chamber 8. A barrier unit is provided inside the extension chamber 9.

[0034] In this embodiment, the opening states of the three chambers can be freely combined according to their vacuum requirements. When the vacuum volume is large, the first vacuum pump group 1 and the second vacuum pump group 2 work simultaneously. When the vacuum volume is small, either the first vacuum pump group 1 or the second vacuum pump group 2 works. When maintaining the vacuum, only the auxiliary pump works to achieve a reasonable balance between vacuuming efficiency and energy consumption. Specifically: when the feed chamber is small, the plugging chamber is large, and the discharge chamber is small, both pumps are turned on simultaneously during vacuum preparation, and the chamber quickly reaches the vacuum value. When the plugging chamber maintains the vacuum, only the auxiliary pump works. When the feed chamber and the discharge chamber are preparing for vacuum, only one pump works. When the first vacuum pump group 1 and the second vacuum pump group 2 are operating, the air inside the third vacuum pipe 7 first passes through the pump body and is finally discharged through the exhaust pipe 3.

[0035] Please refer to this carefully. Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 The negative pressure oscillating component includes a corrugated telescopic tube 11 installed on the inner wall of the connecting chamber 8. An annular plate 12 is installed at one end of the corrugated telescopic tube 11 near the air inlet of the third vacuum pipe 7. A perforated filter plate 15 is connected to the inner wall of the annular plate 12. A first telescopic spring 13 connected to the inner wall of the connecting chamber 8 is provided at one end of the annular plate 12. A splicing rod 14 located inside the corrugated telescopic tube 11 is installed at one end of the perforated filter plate 15. An extension rod 23 arranged parallel to the splicing rod 14 is provided at one end of the perforated filter plate 15. An annular block 10 is installed on the inner wall of the third vacuum pipe 7. An iron block 22 is installed at one end of the annular block 10 near the perforated filter plate 15. An iron block 22 is installed at one end of the extension rod 23 near the annular block 10.

[0036] The negative pressure oscillating component also includes a movable plate 20 installed on the end of the splicing rod 14 away from the small hole filter plate 15. The annular block 10 is located between the small hole filter plate 15 and the movable plate 20. A sealing plug rod 28 is installed on the end of the annular block 10 away from the electromagnet 21. A sleeve 25 is movably sleeved on the sealing plug rod 28. The outer wall of the sleeve 25 is provided with the movable plate 20. A connecting plate 26 is installed on the end of the movable plate 20 away from the annular block 10. A turbulent centrifugal component is provided on the connecting plate 26.

[0037] Among them, the diameter of the movable plate 20 is equal to the inner diameter of the third vacuum pipe 7, the maximum distance between the iron block 22 and the electromagnet 21 is equal to the length of the sleeve 25, and the inner diameter of the annular block 10 is greater than the diameter of the vacuum pneumatic valve 4 and smaller than the diameter of the movable plate 20.

[0038] In this embodiment, when the first vacuum pump group 1 or the second vacuum pump group 2 is started, the electromagnet 21 operates synchronously. When the third vacuum tube 7 is under negative pressure, the sleeve 25 moves away from the annular block 10 under pressure, thereby moving the sleeve 25 relative to the sealing plug rod 28. At the same time, the movable plate 20 moves the perforated filter plate 15 through the splicing rod 14, thereby moving the iron block 22 toward the electromagnet 21, so that the iron block 22 and the electromagnet 21 adhere and attract each other. Meanwhile, the sleeve 25 separates from the sealing plug rod 28. At this time, the first telescopic spring 13 is in an extended state due to the movement of the perforated filter plate 15. When the first vacuum pump group 1 and the second vacuum pump group 2 are operating, the air in the three chambers will pass through the perforated filter plate 15. When air is discharged through sleeve 25, the air entering the pump body is agitated by the turbulent centrifugal component. At the same time, the turbulent centrifugal component determines whether the perforated filter plate 15 needs to be replaced. After the three chambers are evacuated, the pump body is shut off. At this time, the electromagnet 21 is de-energized, so that the iron block 22 loses its adsorption force. At this time, the perforated filter plate 15 will move quickly towards the suction end of the third vacuum pipe 7 under the elastic restoring force of the first extension spring 13. When the perforated filter plate 15 stops moving, the impurities on the surface of the perforated filter plate 15 will separate from the perforated filter plate 15 under the action of inertia, and fall to the bottom of the connecting chamber 8 under its own gravity. This prevents impurities from accumulating on the surface of the perforated filter plate 15 and affecting the vacuuming efficiency.

[0039] Please refer to this carefully. Figure 7 , Figure 8 , Figure 9 , Figure 10 The centrifugal turbulence component includes a connecting sleeve 32 installed at one end of the connecting plate 26. A push plug 43 extending to the outside of the connecting sleeve 32 is inserted inside the connecting sleeve 32. A positioning plate 33 is installed at one end of the push plug 43. An elastic sheet 42 is provided on the inner wall of the connecting sleeve 32. A first contact piece 40 is installed at one end of the elastic sheet 42. A second contact piece 41 flush with the first contact piece 40 is installed at one end of the push plug 43. An L-shaped positioning frame 29 is provided at the bottom of the end of the sleeve 25 away from the movable plate 20. One end of the L-shaped positioning frame 29 is rotatably connected to a rotating... A rotating shaft 30 is connected to a cross plate 31 on its outer side. A turntable 37 is installed at one end of the cross plate 31. A piston cylinder 38 is provided on the outer side of the turntable 37. A piston 36 extending to the outer side of the piston cylinder 38 is inserted inside the piston cylinder 38. A third telescopic spring 39 connected to the inner wall of the piston cylinder 38 is provided on the outer side of the piston 36. A diagonal connecting rod 35 is rotatably connected to one end of the piston 36 via a rotating shaft. A rotating plate 34 is rotatably connected to one end of the diagonal connecting rod 35 via a rotating shaft. One end of the rotating plate 34 is rotatably connected to the positioning plate 33 via a bearing.

[0040] The first contact 40 is electrically connected to the power supply of the vacuum printing equipment via a wire, and the second contact 41 is connected to a warning light connected to the vacuum printing equipment via a wire. The maximum distance from the center of the rotating shaft 30 to the edge of the cross plate 31 is equal to the distance from the center of the rotating shaft 30 to the center of the sleeve 25. The sleeve 25 is a hollow cylindrical structure without a top or bottom.

[0041] In this embodiment, when air is discharged through the sleeve 25, the cross plate 31 will obstruct the air to a certain extent. At this time, the air will blow the cross plate 31 to rotate as it exits the sleeve 25. Since the diameter of the sleeve 25 is smaller than the diameter of the third vacuum tube 7 and the pump body has limited suction power, the air velocity passing through the sleeve 25 will increase, thereby causing the cross plate 31 to rotate rapidly. During this process, the rotation of the cross plate 31 will turbulentize the air inside the third vacuum tube 7, thereby preventing the formation of eddies in the air inside the third vacuum tube 7. At the same time, the turntable 37 rotates with the cross plate 31, and the piston 36 will be driven by the rotation of the turntable 37. The centrifugal force moves away from the turntable 37, thereby causing the inclined connecting rod 35 to push the rotating plate 34 to move, so that the positioning plate 33 moves away from the turntable 37. This allows the second contact piece 41 to contact the first contact piece 40, at which point the lamp on the vacuum printing equipment will light up. This indicates that the filter holes on the perforated filter plate 15 are not blocked over a large area. By observing whether the lamp on the vacuum printing equipment lights up when vacuuming begins, it can be determined whether the perforated filter plate 15 needs to be replaced. As the air in the chamber decreases, the amount of air passing through the perforated filter plate 15 will decrease, thus reducing the rotation speed of the cross rotating plate 31. At this time, the vacuum printing equipment...

[0042] Please refer to this carefully. Figure 3 , Figure 4 , Figure 5 The barrier unit includes a first barrier plate 16 slidably connected to the inside of the extension chamber 9. The first barrier plate 16 has a slot 27 inside. The inner wall of the slot 27 is provided with a second telescopic spring 17. One end of the second telescopic spring 17 is provided with a plug rod 18 extending to the outside of the slot 27. One end of the plug rod 18 is connected to the second barrier plate 19. The top of the end of the first barrier plate 16 near the second barrier plate 19 is provided with a connecting frame 24 connected to the annular plate 12.

[0043] The length of the first baffle plate 16 is greater than the length of the sleeve 25, and the widths of the first baffle plate 16 and the second baffle plate 19 are equal to the width of the bottom inner wall of the connecting chamber 8.

[0044] In this embodiment, when the perforated filter plate 15 is in its initial state, there is a gap between one end of the perforated filter plate 15 and the inner wall of the connecting chamber 8. At the same time, the second baffle plate 19 and the first baffle plate 16 are separated. When the perforated filter plate 15 moves toward the annular block 10, it will drive the first baffle plate 16 to move synchronously through the annular plate 12 and the connecting frame 24. When the second baffle plate 19 contacts the other inner wall of the connecting chamber 8, the perforated filter plate 15 continues to move, which will cause the first baffle plate 16 to squeeze the second telescopic spring 17, so that the first baffle plate 16 and the second baffle plate 19 are in contact. This can prevent impurities in the connecting chamber 8 from moving to one end of the perforated filter plate 15 again under the action of negative pressure. When the perforated filter plate 15 returns to its original state, the first baffle plate 16 and the second baffle plate 19 will be separated. At this time, the impurities on the perforated filter plate 15 will fall to the bottom of the inner side of the connecting chamber 8 under the action of inertia.

[0045] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A vacuum printing pumping device, comprising a first vacuum pump assembly (1), characterized in that, A second vacuum pump group (2) is installed on one side of the first vacuum pump group (1). A third vacuum pipe (7) is connected to one end of the first vacuum pump group (1). A second vacuum pipe (6) is connected to one end of the second vacuum pump group (2). A first vacuum pipe (5) is provided between the third vacuum pipe (7) and the second vacuum pipe (6). Vacuum pneumatic valves (4) are provided on the third vacuum pipe (7), the second vacuum pipe (6), and the first vacuum pipe (5). An exhaust pipe (3) is installed on one side of the second vacuum pump group (2). A connecting chamber (8) is installed at one end of the third vacuum pipe (7), the first vacuum pipe (5), and the second vacuum pipe (6). A negative pressure swaying component is provided inside the connecting chamber (8). The third vacuum pipe (7), the second vacuum pipe (6), and the first vacuum pipe (5) are in a state of mutual communication. The first vacuum pump group (1) and the second vacuum pump group (2) each contain an auxiliary pump with a small pumping speed and a main pump with a large pumping speed. One end of the third vacuum pipe (7), the first vacuum pipe (5), and the second vacuum pipe (6) are respectively connected to the feed chamber, the plug chamber, and the discharge chamber. The inner side of the connecting chamber (8) is connected to a small hole filter plate (15) through a negative pressure swaying component. The outer wall of the connecting chamber (8) is equipped with an extension chamber (9) located below the third vacuum pipe (7). The inner side of the extension chamber (9) is provided with a barrier unit. The negative pressure oscillating component includes a corrugated telescopic tube (11) installed on the inner wall of the connecting chamber (8). An annular plate (12) is installed at one end of the corrugated telescopic tube (11) near the air inlet of the third vacuum pipe (7). A perforated filter plate (15) is connected to the inner wall of the annular plate (12). A first telescopic spring (13) connected to the inner wall of the connecting chamber (8) is provided at one end of the annular plate (12). A splicing rod (14) located inside the corrugated telescopic tube (11) is installed at one end of the perforated filter plate (15). An extension rod (23) is provided at one end of the perforated filter plate (15) and arranged parallel to the splicing rod (14). An annular block (10) is installed on the inner wall of the third vacuum pipe (7). An iron block (22) is installed at one end of the annular block (10) near the perforated filter plate (15). An iron block (22) is installed at one end of the extension rod (23) near the annular block (10). The negative pressure oscillating component also includes a movable plate (20) installed on the end of the splicing rod (14) away from the small hole filter plate (15). The annular block (10) is located between the small hole filter plate (15) and the movable plate (20). A sealing plug rod (28) is installed on the end of the annular block (10) away from the electromagnet (21). A sleeve (25) is movably sleeved on the sealing plug rod (28). The outer wall of the sleeve (25) is provided with the movable plate (20). A connecting plate (26) is installed on the end of the movable plate (20) away from the annular block (10). A turbulent centrifugal component is provided on the connecting plate (26). The diameter of the movable plate (20) is equal to the inner diameter of the third vacuum tube (7). The maximum distance between the iron block (22) and the electromagnet (21) is equal to the length of the sleeve (25).

2. The vacuum printing pumping device according to claim 1, characterized in that, The inner diameter of the annular block (10) is greater than the diameter of the vacuum pneumatic valve (4) and less than the diameter of the movable plate (20).

3. The vacuum printing pumping device according to claim 1, characterized in that, The centrifugal turbulence component includes a connecting sleeve (32) installed at one end of the connecting plate (26). A pusher plug (43) extending to the outside of the connecting sleeve (32) is inserted inside the connecting sleeve (32). A positioning plate (33) is installed at one end of the pusher plug (43). An elastic sheet (42) is provided on the inner wall of the connecting sleeve (32). A first contact piece (40) is installed at one end of the elastic sheet (42). A second contact piece (41) flush with the first contact piece (40) is installed at one end of the pusher plug (43). An L-shaped positioning frame (29) is provided at the bottom of the end of the sleeve (25) away from the movable plate (20). One end of the L-shaped positioning frame (29) is rotatably connected to a rotating... A rotating shaft (30) is connected to a cross plate (31) on its outer side. A turntable (37) is installed at one end of the cross plate (31). A piston cylinder (38) is provided on the outer side of the turntable (37). A piston (36) extending to the outer side of the piston cylinder (38) is inserted inside the piston cylinder (38). A third telescopic spring (39) connected to the inner wall of the piston cylinder (38) is provided on the outer side of the piston (36). A diagonal connecting rod (35) is rotatably connected to one end of the piston (36) through a rotating shaft. A rotating plate (34) is rotatably connected to one end of the diagonal connecting rod (35) through a rotating shaft. One end of the rotating plate (34) is rotatably connected to the positioning plate (33) through a bearing.

4. The vacuum printing pumping device according to claim 3, characterized in that, The first contact (40) is electrically connected to the power supply on the vacuum printing equipment via a wire, and the second contact (41) is connected to a warning light connected to the vacuum printing equipment via a wire.

5. The vacuum printing pumping device according to claim 3, characterized in that, The maximum distance from the center of the rotating shaft (30) to the edge of the cross plate (31) is equal to the distance from the center of the rotating shaft (30) to the center of the sleeve (25).

6. The vacuum printing pumping device according to claim 3, characterized in that, The barrier unit includes a first barrier plate (16) slidably connected to the inside of the extension chamber (9). The first barrier plate (16) has a slot (27) inside. The inner wall of the slot (27) is provided with a second telescopic spring (17). One end of the second telescopic spring (17) is provided with a plug rod (18) extending to the outside of the slot (27). One end of the plug rod (18) is connected to the second barrier plate (19). The top of the first barrier plate (16) near the second barrier plate (19) is provided with a connecting frame (24) connected to the annular plate (12).

7. A vacuum printing pumping device according to claim 6, characterized in that, The length of the first barrier plate (16) is greater than the length of the sleeve (25), and the width of the first barrier plate (16) and the second barrier plate (19) is equal to the width of the bottom inner wall of the connecting chamber (8).

8. A vacuum printing pumping device according to claim 6, characterized in that, The sleeve (25) is a hollow cylindrical structure without a top or bottom.

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