Rotary printing paper placing device

Abstract

The present invention discloses a rotary printing paper placing device, and relates to the technical field of printing machine components. The present invention comprises a placing table, a waste roll box and a waste paper box are fixedly installed at the bottom of the placing table, an isolation shell is fixedly installed at the top of the placing table, a reeling motor and a half-cylinder reeling frame are fixedly installed inside the isolation shell, a reeling shaft is arranged inside the half-cylinder reeling frame, one end of the reeling shaft is rotatably installed inside the half-cylinder reeling frame and is drivingly connected to the output shaft of the reeling motor, and two paper pushing electric guide rails are fixedly installed inside the isolation shell. The present invention drives the paper roll to rotate by the reeling motor, so that one end of the paper roll slides on the cutting table, and then the reeling motor stops, and the cutting knife rotates alternately to cut one end of the paper roll, and the reeling motor continues to operate, so that the cut end of the paper roll continues to slide, so as to realize automatic reeling and cutting of one end of the paper roll, and greatly simplify the steps of manual operation.

Description

Technical Field

[0001] The invention relates to the technical field of printing machine components, and in particular to a rotary printing paper placing device. Background Art

[0002] Rotary printing is also called web printing. The paper used for printing is roll paper. Printing is carried out by continuous paper feeding. The blank part on the printing plate is hydrophilic and ink-repellent, while the image part is ink-loving and water-repellent. When printing, the ink on the printing plate is transferred to the rubber cloth, and the paper is pressed against the rubber cylinder through the rubber, and then the graphic information is simultaneously transferred to the front and back of the paper, thus completing the printing. The roll paper used for printing is generally placed on a roll-unwinding rack.

[0003] At present, when placing a roll of paper in a rotary printing machine, it is necessary to fix the position of the roll of paper, then pull out one end of the roll of paper and cut off the top corners on both sides, so that one end of the roll of paper presents a triangular or trapezoidal shape to prevent the roll of paper from being stuck or folded when feeding the paper, and then the cut end of the roll of paper is inserted into a paper clip or a reel for feeding. The whole process requires manual operation, which is not only cumbersome but also dangerous. Therefore, a rotary printing paper placing device is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the entire process of placing roll paper in a rotary printing machine currently requires manual operation, which is not only cumbersome but also dangerous. The present invention provides a rotary printing paper placing device.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A rotary printing paper placing device comprises a placing table, a waste roll box and a waste paper box are fixedly installed at the bottom of the placing table, an isolation shell is fixedly installed on the top of the placing table, a reeling motor and a half-cylinder reeling frame are fixedly installed inside the isolation shell, a reeling shaft is arranged inside the half-cylinder reeling frame, one end of the reeling shaft is rotatably installed inside the half-cylinder reeling frame and is drivingly connected to the output shaft of the reeling motor, two paper pushing electric guide rails are fixedly installed inside the isolation shell, the paper pushing electric guide rails are both arranged on one side of the half-cylinder reeling frame, an electric slide is drivenly installed on the top of the two electric slides, the same cutting table is fixedly installed on the top of the half-cylinder A visual recognition instrument facing the cutting table is fixedly installed on the top of the unwinding rack, a paper feeding hole corresponding to the position of the cutting table is opened on one side of the isolation shell, a paper pushing arc plate is fixedly installed on the side of the cutting table close to the half-cylinder unwinding rack, vertically arranged fastening electric push rods are fixedly installed on both sides of the cutting table, the tops of the two fastening electric push rods are fixedly installed with the same positioning pressure rod, the positioning pressure rod is located at the top of the cutting table, the side of the cutting table away from the half-cylinder unwinding rack is a trapezoidal structure, cutting knives are rotatably installed on both sides of the cutting table, cutting motors are fixedly installed on both sides of the cutting table, and the two cutting knives are respectively driven and installed on the output shafts of the two cutting motors.

[0007] Furthermore, a plurality of accommodating grooves evenly distributed along the axis of the unwinding shaft are opened on the circumferential side of the unwinding shaft, a spring slide is fixedly installed inside the accommodating grooves, a fastening protrusion is slidably installed inside the spring slide, and a plurality of evenly distributed fastening springs are fixedly installed between the fastening protrusion and the inner wall of the spring slide.

[0008] Furthermore, one end of the fastening protrusion away from the unwinding motor is provided with a chamfer, and an anti-curling roller is rotatably mounted on the chamfered surface of the fastening protrusion.

[0009] Furthermore, a paper roll rack is fixedly installed inside the isolation shell, a supporting base is fixedly installed on the bottom of the paper roll rack, the same transition semicircular track is fixedly installed between the supporting base and the half-cylinder unwinding rack, the axes of the supporting base, the transition semicircular track and the half-cylinder unwinding rack are consistent, a horizontally arranged paper pushing electric push rod is fixedly installed inside the isolation shell, the telescopic end of the paper pushing electric push rod extends to the interior of the paper roll rack and is fixedly installed with a paper pushing plate, the paper pushing electric push rod is consistent with the axial position of the supporting base, a delivery hole is opened on the top of the isolation shell, the position of the delivery hole is consistent with the position of the paper roll rack, and a closing cover is placed on the delivery hole.

[0010] Furthermore, an inner rod is fixedly installed on the side of the paper pushing plate facing the half-cylinder unwinding frame, the outer diameter of the inner rod is smaller than the outer diameter of the unwinding shaft, a micro electric push rod is fixedly installed on one end of the inner rod, a fastening pin is fixedly installed on the telescopic end of the micro electric push rod, and a waste roll discharge hole is opened at the bottom of the supporting base, and the waste roll discharge hole passes through the placement table and is connected with the interior of the waste roll box.

[0011] Furthermore, supporting frames are slidably installed on both sides of the paper roll placement rack, and a lifting plate is fixedly installed on the bottom of the supporting frames. Lifting hydraulic rods are fixedly installed at the four inner corners of the waste roll box, and the telescopic ends of the lifting hydraulic rods extend to the top of the placement table and are respectively fixedly installed on the bottom of both ends of the two lifting plates, and a horizontally arranged positioning electric push rod is fixedly installed on the top of the supporting frames, and a positioning frame is fixedly installed on the telescopic ends of the positioning electric push rods, and a plurality of positioning conical rods are fixedly installed on the side where the two positioning frames are close to each other, and the plurality of positioning conical rods are evenly distributed from top to bottom.

[0012] Furthermore, a collecting bucket is fixedly installed inside the isolation shell, the collecting bucket is located between the two paper pushing electric guide rails and corresponds to the position of the cutting knife, and the bottom end of the collecting bucket passes through the placement table and extends to the inside of the waste paper box.

[0013] Furthermore, a connected negative pressure wind box is provided on one side of the waste paper box, and a negative pressure fan is provided on one side of the negative pressure wind box.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention drives the paper roll to rotate by the unwinding motor, and the visual recognition instrument observes the movement state of the paper roll, so that one end of the paper roll slides on the cutting table, and then the unwinding motor stops, and the cutting knife rotates alternately to cut one end of the paper roll, and the unwinding motor continues to run, so that the cut end of the paper roll continues to slide, thereby realizing automatic unwinding and cutting of one end of the paper roll, which greatly simplifies the steps of manual operation;

[0016] 2. The present invention provides a fastening protrusion, so that when the core tube of the paper roll is aligned with the unwinding shaft and plugged in, the core tube will squeeze the fastening protrusion to shrink into the spring slide seat, thereby compressing the fastening spring inside the spring slide seat, so that the elastic force of the fastening spring causes the multiple fastening protrusions to squeeze the inner wall of the core tube respectively, thereby improving the fastening of the unwinding shaft and the paper roll core tube;

[0017] 3. The present invention provides an anti-curling roller, so that when the paper roll is inserted into the half-roll unwinding frame, the chamfered slope at one end of the fastening protrusion can facilitate the paper roll core tube to smoothly squeeze the fastening protrusion, and the anti-curling roller on the chamfered surface of the fastening protrusion can prevent the core tube from having rigid friction with the fastening protrusion, avoid wear of the core tube, and prevent the side edge of the paper core tube from curling;

[0018] 4. The present invention provides a paper roll placement rack so that multiple paper rolls can be placed in the paper roll placement rack in sequence. At this time, the paper push electric push rod drives the paper push plate to push the bottom paper roll into the half-cylinder unwinding rack, so that the core tube of the paper roll and the unwinding shaft are plugged into each other, and the paper roll is automatically placed. By increasing the amount of paper rolls placed at a time, the number of paper rolls placed is reduced, and the automatic placement of the paper roll can be realized, further reducing manual operations;

[0019] 5. The present invention is provided with a micro electric push rod, so that when the roll paper is used up, the micro electric push rod at one end of the inner rod will drive the fastening needle to pierce the inner wall of the core tube, and then the paper pushing electric push rod will retract the used core tube into the supporting base, and the micro electric push rod will retract the fastening needle, and the core tube will slide into the waste roll box through the waste roll discharge hole for recycling, thereby realizing automatic recycling of the core tube and automatic replacement of the roll paper;

[0020] 6. The present invention provides a positioning conical rod, so that when multiple paper roll heads are placed in the paper roll placement rack, the positioning electric push rods on both sides drive multiple positioning conical rods to be inserted into the two ends of multiple core tubes respectively, so as to position multiple paper rolls located at the top. When the paper roll located inside the supporting base is pushed by the paper pushing plate, the paper rolls at the top are all fixed, so as to prevent other paper rolls from affecting the movement of the paper roll at the bottom and the paper pushing plate;

[0021] 7. The present invention provides a collecting hopper so that when one end of the paper roll is cut into a trapezoid by the cutting knife, the cut paper strips will fall into the collecting hopper and slide along the collecting hopper to the waste paper box for recycling. The negative pressure fan on one side of the negative pressure wind box will blow air outwards to keep the negative pressure wind box and the inside of the waste paper box in a negative pressure state, so that the waste paper strips in the collecting hopper are sucked into the waste paper box, preventing the paper strips from accumulating on the drop opening of the collecting hopper and causing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the isolation shell of the present invention;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the unwinding frame and the cutting table of the present invention;

[0025] Figure 4The present invention Figure 3 Schematic diagram of the structure at A in the middle;

[0026] Figure 5 The present invention Figure 3 Schematic diagram of the structure at B in the middle;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the paper roll placement rack of the present invention;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the electric paper pusher of the present invention;

[0029] Figure 8 The present invention Figure 7 Schematic diagram of the C structure;

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the positioning electric push rod and the positioning conical rod of the present invention;

[0031] Reference numerals: 1, placing table; 2, waste roll box; 3, waste paper box; 4, isolation shell; 401, paper feeding hole; 402, feeding hole; 5, unwinding motor; 6, half-roll unwinding rack; 7, unwinding shaft; 8, paper pushing electric guide rail; 9, electric slide; 10, cutting table; 11, visual recognition instrument; 12, paper pushing arc plate; 13, fastening electric push rod; 14, positioning pressure rod; 15, cutting knife; 16, cutting motor; 17, spring slide seat; 18, fastening convex rod; 1 9. Anti-curling roller; 20. Paper roll placement rack; 21. Support base; 2101. Waste roll discharge hole; 22. Transition semicircular track; 23. Paper push electric push rod; 24. Paper push tray; 25. Closing cover; 26. Insert rod; 27. Micro electric push rod; 28. Fastening needle; 29. ​​Support rack; 30. Lifting plate; 31. Lifting hydraulic rod; 32. Positioning electric push rod; 33. Positioning rack; 34. Positioning conical rod; 35. Collecting bucket; 36. Negative pressure bellows. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] like Figures 1 to 9 As shown, a rotary printing paper placing device comprises a placing table 1, a waste roll box 2 and a waste paper box 3 are fixedly installed at the bottom of the placing table 1, and an isolation shell 4 is fixedly installed on the top of the placing table 1. Figure 2 As shown, the interior of the isolation housing 4 is fixedly installed with an unwinding motor 5 and a half-roll unwinding frame 6. Figure 3 As shown, a reel shaft 7 is arranged inside the half-cylinder reeling frame 6, one end of which is rotatably mounted inside the half-cylinder reeling frame 6 and drivingly connected to the output shaft of the reeling motor 5, and two paper-pushing electric guide rails 8 are fixedly mounted inside the isolation housing 4, and the paper-pushing electric guide rails 8 are both arranged on one side of the half-cylinder reeling frame 6, as shown in FIG. Figure 4 As shown, the top of the paper pushing electric guide rail 8 is driven to install an electric slide 9, and the top of the two electric slides 9 is fixedly installed with the same cutting table 10, as shown in FIG. Figure 2 As shown, a visual recognition device 11 facing the cutting table 10 is fixedly installed on the top of the half-roll unwinding frame 6. Figure 1 As shown, a paper feed hole 401 corresponding to the position of the cutting table 10 is opened on one side of the isolation shell 4. In this embodiment, a rotary printing press is placed on one side of the rotary printing paper placement device, and the position of the paper clip or reel on the printing press is consistent with the position of the paper feed hole 401. Figure 3 As shown, a paper pushing arc plate 12 is fixedly installed on one side of the cutting table 10 close to the half-tube unwinding frame 6. Figure 4As shown, both sides of the cutting table 10 are fixedly installed with vertically arranged fastening electric push rods 13, and the tops of the two fastening electric push rods 13 are fixedly installed with the same positioning pressure rod 14, and the positioning pressure rod 14 is located at the top of the cutting table 10. The side of the cutting table 10 away from the half-tube unwinding rack 6 is a trapezoidal structure, and both sides of the cutting table 10 are rotatably installed with cutting knives 15, and both sides of the cutting table 10 are fixedly installed with cutting motors 16, and the two cutting knives 15 are respectively driven by the two cutting motors 16. Specifically, when the rotary printing paper placing device is in use, the printing paper roll is first placed in the half-cylinder unwinding rack 6, and the unwinding shaft 7 is inserted into the core tube of the paper roll. At this time, from the side of the unwinding motor 5, the winding direction of the paper roll is counterclockwise, and the paper pushing electric guide rail 8 drives the electric slide 9 to move toward the half-cylinder unwinding rack 6, thereby driving the cutting table 10 to move toward the half-cylinder unwinding rack 6, so that the paper pushing arc plate 12 contacts one side of the paper roll, and then the unwinding motor 5 drives the paper roll to rotate, and visual recognition The instrument 11 observes the movement state of the paper roll until the active end of the paper roll contacts the paper push arc plate 12 from above. At this time, the active end of the paper roll will be blocked by the paper push arc plate 12, so that it slides along one side of the paper push arc plate 12 to the top of the cutting table 10, and then the unwinding motor 5 stops, and the fastening electric push rods 13 on both sides of the cutting table 10 shrink downward, so that the positioning pressure rod 14 is pressed against the top of the active end of the paper roll, and the cutting motors 16 on both sides are driven successively. The two cutting knives 15 rotate alternately to cut and reset one end of the paper roll, so that one end of the paper roll presents a shape consistent with the trapezoidal side of the cutting table 10, and then the positioning pressure rod 14 resets to loosen one end of the paper roll, and the unwinding motor 5 continues to operate, so that the cut end of the paper roll continues to slide for a distance until it passes through the paper feed hole 401 and is rolled into the printing press by the paper clamp or reel of the rotary printing press for printing, thereby realizing automatic unwinding and cutting of one end of the paper roll, greatly simplifying the steps of manual operation.

[0037] like Figure 5 As shown, a plurality of accommodating grooves are opened on the circumferential side of the unwinding shaft 7 and are evenly distributed along the axis of the unwinding shaft 7, and a spring slide 17 is fixedly installed inside the accommodating grooves, and a fastening protrusion 18 is slidably installed inside the spring slide 17, and a plurality of evenly distributed fastening springs are fixedly installed between the fastening protrusion 18 and the inner wall of the spring slide 17; specifically, by arranging the fastening protrusion 18, when the core tube of the paper roll is mutually aligned and plugged into the unwinding shaft 7, the core tube will squeeze the fastening protrusion 18 to shrink into the spring slide 17, thereby compressing the fastening spring inside the spring slide 17, so that the elastic force of the fastening spring makes the plurality of fastening protrusions 18 squeeze the inner wall of the core tube respectively, thereby improving the fastening of the unwinding shaft 7 and the paper roll core tube.

[0038] like Figure 5As shown, the end of the fastening protrusion 18 away from the unwinding motor 5 is chamfered, and an anti-curling roller 19 is rotatably installed on the chamfered surface of the fastening protrusion 18; specifically, by arranging the anti-curling roller 19, when the paper roll is inserted into the half-cylinder unwinding frame 6, the chamfered inclined surface at one end of the fastening protrusion 18 can facilitate the paper roll core tube to smoothly squeeze the fastening protrusion 18, and at the same time, the anti-curling roller 19 on the chamfered surface of the fastening protrusion 18 can avoid rigid friction between the core tube and the fastening protrusion 18, avoid wear of the core tube, and prevent the side edge of the paper core tube from curling.

[0039] like Figure 2 As shown, a roll paper placement rack 20 is fixedly installed inside the isolation shell 4. Figure 6 As shown, a supporting base 21 is fixedly installed at the bottom of the roll paper placement rack 20, and a same transition semicircular track 22 is fixedly installed between the supporting base 21 and the half-cylinder unwinding rack 6. The axes of the supporting base 21, the transition semicircular track 22 and the half-cylinder unwinding rack 6 are consistent. In this embodiment, the inner diameters of the half-cylinder unwinding rack 6, the supporting base 21 and the transition semicircular track 22 are all adapted to the outer diameter of the roll paper, as shown in FIG. Figure 2 As shown, a horizontally arranged paper-pushing electric push rod 23 is fixedly installed inside the isolation housing 4. Figure 7 As shown, the telescopic end of the paper pusher 23 extends to the inside of the paper roll placement rack 20 and is fixedly installed with a paper pusher tray 24. The axial position of the paper pusher 23 and the supporting base 21 are consistent, as shown in FIG. Figure 2 As shown, a delivery hole 402 is provided on the top of the isolation shell 4, and the position of the delivery hole 402 is consistent with the position of the roll paper placement rack 20, as shown in FIG. Figure 1 As shown, a closing cover 25 is placed on the delivery hole 402; specifically, by providing a paper roll placement rack 20, when putting in the paper roll, the closing cover 25 on the top of the isolation shell 4 can be opened, and multiple paper rolls can be put into the paper roll placement rack 20 in turn, and the winding direction of the paper roll is made to be counterclockwise from the side direction of the unwinding motor 5, and then the closing cover 25 is re-covered. At this time, the paper pushing electric push rod 23 on one side of the paper roll placement rack 20 will drive the paper pushing plate 24 to contact the bottom paper roll and push the paper roll through the supporting base 21 and the transition semicircular track 22 and enter the half-cylinder unwinding rack 6, so that the core tube of the paper roll and the unwinding shaft 7 are plugged into each other, and the automatic placement of the paper roll is completed. By increasing the amount of paper roll delivered at a single time, the number of times the paper roll is delivered is reduced, and the automatic placement of the paper roll can be achieved, further reducing manual operation.

[0040] like Figure 8As shown, an inner rod 26 is fixedly installed on the side of the paper pushing tray 24 facing the half-cylinder unwinding rack 6, and the outer diameter of the inner rod 26 is smaller than the outer diameter of the unwinding shaft 7. A micro-electric push rod 27 is fixedly installed on one end of the inner rod 26, and a fastening pin 28 is fixedly installed on the telescopic end of the micro-electric push rod 27. A waste roll discharge hole 2101 is opened at the bottom of the supporting base 21, and the waste roll discharge hole 2101 passes through the placement table 1 and is connected to the interior of the waste roll box 2; specifically, by arranging the micro-electric push rod 27, after the paper pushing tray 24 pushes the roll of paper into the half-cylinder unwinding rack 6, the paper pushing tray 24 always remains on one side of the roll of paper to prevent the roll of paper from shifting during the unwinding process. At this time, the inner rod 26 will also be located in the core tube of the roll of paper. When the roll of paper is used up, one end of the inner rod 26 The micro electric push rod 27 will drive the fastening needle 28 to penetrate into the inner wall of the core tube, so that the paper pushing plate 24 is fixed to the core tube, and then the paper pushing electric push rod 23 is reset to retract the exhausted core tube from the half-tube unwinding rack 6 into the supporting base 21, and the micro electric push rod 27 will retract the fastening needle 28, and the paper pushing electric push rod 23 will continue to contract, so that the inner insertion rod 26 and the core tube are released from the fixed connection. Since the outer diameter of the inner insertion rod 26 is smaller than the outer diameter of the unwinding shaft 7, that is, smaller than the inner diameter of the core tube, the core tube will be separated from the inner insertion rod 26 and fall on the supporting base 21, and finally slide into the waste roll box 2 through the waste roll discharge hole 2101 for recycling. At this time, the paper pushing electric push rod 23 can put a new roll of paper into the half-tube unwinding rack 6 for replacement, thereby realizing automatic recovery of the core tube and automatic replacement of the roll of paper.

[0041] like Figure 6 As shown, the two sides of the paper roll placement rack 20 are slidably mounted with support frames 29, and the bottom of the support frames 29 are fixedly mounted with lifting plates 30, as shown in FIG. Figure 2 As shown, the four corners of the waste roll box 2 are fixedly installed with lifting hydraulic rods 31, and the telescopic ends of the lifting hydraulic rods 31 extend to the top of the placement table 1 and are fixedly installed at the bottom of the two ends of the two lifting plates 30, as shown in FIG. Fig. 9As shown, a horizontally arranged positioning electric push rod 32 is fixedly installed on the top of the support frame 29, and a positioning frame 33 is fixedly installed on the telescopic end of the positioning electric push rod 32. A plurality of positioning conical rods 34 are fixedly installed on the side where the two positioning frames 33 are close to each other, and the plurality of positioning conical rods 34 are evenly distributed from top to bottom; specifically, by setting the positioning conical rods 34, when a plurality of paper roll heads are put into the paper roll placement rack 20, the positioning electric push rods 32 on both sides will drive the positioning frame 33 to approach the paper roll until the plurality of positioning conical rods 34 on both sides are respectively inserted into the two ends of the plurality of core barrels, thereby positioning the plurality of paper rolls located above, and when the paper rolls located inside the supporting base 21 are When the paper pushing tray 24 is pushed, the paper rolls above are fixed, thereby preventing other paper rolls from affecting the movement of the paper rolls at the bottom and the paper pushing tray 24. When the core tube is recovered, the lifting hydraulic rods 31 on all sides drive the supporting frame 29 to slide downward along the paper roll placement frame 20, thereby driving multiple paper rolls to descend until a new paper roll falls into the supporting base 21. At this time, the positioning electric push rod 32 drives the positioning conical rods 34 on both sides to disengage from each core tube, and the lifting hydraulic rod 31 drives the supporting frame 29 to move up and reset. The positioning electric push rod 32 drives multiple positioning conical rods 34 to reinsert into the two ends of the multiple core tubes above. At this time, the paper pushing electric push rod 23 can drag the new paper roll back into the half-tube unwinding frame 6.

[0042] like Figure 2 As shown, a collecting hopper 35 is fixedly installed inside the isolation shell 4. The collecting hopper 35 is located between the two paper pushing electric guide rails 8 and corresponds to the position of the cutting knife 15. The bottom end of the collecting hopper 35 passes through the placement table 1 and extends to the inside of the waste paper box 3. Specifically, by setting the collecting hopper 35, when one end of the roll paper is cut into a trapezoid by the cutting knife 15, the cut paper strips will fall into the collecting hopper 35 and slide along the collecting hopper 35 to the waste paper box 3 for recycling.

[0043] like Figure 2 As shown, a negative pressure bellows 36 is provided on one side of the waste paper box 3, and a negative pressure fan is provided on one side of the negative pressure bellows 36; specifically, by providing the negative pressure bellows 36, when one end of the roll paper is cut, the negative pressure fan on one side of the negative pressure bellows 36 will blow air outwards, so that the negative pressure bellows 36 and the inside of the waste paper box 3 are both maintained in a negative pressure state, so that the waste paper strips inside the collecting bucket 35 are sucked into the waste paper box 3, preventing the paper strips from accumulating on the drop opening of the collecting bucket 35 and causing blockage.

[0044] In summary: when the rotary printing paper placing device is in use, the printing paper roll is first placed in the half-cylinder unwinding rack 6, and the unwinding shaft 7 is inserted into the core tube of the paper roll. At this time, from the side of the unwinding motor 5, the winding direction of the paper roll is counterclockwise, and the paper pushing electric guide rail 8 will drive the electric slide 9 to move toward the half-cylinder unwinding rack 6, thereby driving the cutting table 10 to move toward the half-cylinder unwinding rack 6, so that the paper pushing arc plate 12 contacts one side of the paper roll, and then the unwinding motor 5 drives the paper roll to rotate, and the visual recognition instrument 11 observes the movement state of the paper roll until the active end of the paper roll contacts the paper pushing arc plate 12 from above. At this time, the active end of the paper roll will be blocked by the paper pushing arc plate 12, and then it slides along one side of the paper pushing arc plate 12 to the top of the cutting table 10, and one end of the paper roll is on the cutting The paper roll is slid on the table 10, and then the unwinding motor 5 stops, and the fastening electric push rods 13 on both sides of the cutting table 10 shrink downward, so that the positioning pressure rod 14 is pressed tightly on the top of the movable end of the paper roll, and the cutting motors 16 on both sides successively drive the two cutting knives 15 to rotate alternately to cut and reset one end of the paper roll, so that one end of the paper roll presents a shape consistent with the trapezoidal side of the cutting table 10, and then the positioning pressure rod 14 is reset to loosen one end of the paper roll, and the unwinding motor 5 continues to operate, so that the cut end of the paper roll continues to slide for a distance until it passes through the paper feed hole 401 and is rolled into the printing press by the paper clip or reel of the rotary printing press for printing, thereby realizing automatic unwinding and cutting of one end of the paper roll, greatly simplifying the steps of manual operation, and by providing the fastening convex rod 18, the paper roll can be automatically unwound and cut. When the core tube and the unwinding shaft 7 are aligned and plugged into each other, the core tube will squeeze the fastening protrusion 18 to shrink into the spring slide seat 17, thereby compressing the fastening spring inside the spring slide seat 17, so that the elastic force of the fastening spring makes the multiple fastening protrusions 18 squeeze the inner wall of the core tube respectively, thereby improving the fastening of the unwinding shaft 7 and the paper roll core tube. By setting the anti-curling roller 19, when the paper roll is inserted into the semi-cylinder unwinding frame 6, the chamfered inclined surface at one end of the fastening protrusion 18 can facilitate the paper roll core tube to smoothly squeeze the fastening protrusion 18. At the same time, the anti-curling roller 19 on the chamfered surface of the fastening protrusion 18 can avoid rigid friction between the core tube and the fastening protrusion 18, avoid wear of the core tube, and prevent the side edge of the paper core tube from curling. The placement rack 20 allows the closing cover 25 on the top of the isolation shell 4 to be opened when putting in the roll of paper, and multiple rolls of paper can be put into the roll paper placement rack 20 in turn, and the winding direction of the roll of paper is made to be counterclockwise from the side direction of the unwinding motor 5, and then the closing cover 25 is re-covered. At this time, the paper pushing electric push rod 23 on one side of the roll paper placement rack 20 will drive the paper pushing plate 24 to contact the bottom roll of paper and push the roll of paper through the supporting base 21 and the transition semicircular track 22 and enter the half-cylinder unwinding rack 6, so that the core tube of the roll of paper and the unwinding shaft 7 are plugged into each other, and the automatic placement of the roll of paper is completed. By increasing the amount of paper rolled in a single time, the number of times the roll of paper is put in can be reduced, and the automatic placement of the roll of paper can be realized, and the manual operation can be further reduced. By setting the micro electric push rod 27,After the paper pusher 24 pushes the paper roll into the half-cylinder unwinding rack 6, the paper pusher 24 always remains on one side of the paper roll to prevent the paper roll from deviating during the unwinding process. At this time, the inner rod 26 will also be located in the core tube of the paper roll. When the paper roll is used up, the micro-electric push rod 27 at one end of the inner rod 26 will drive the fastening needle 28 to penetrate the inner wall of the core tube to fix the paper pusher 24 and the core tube. Then the paper pusher electric push rod 23 is reset to retract the used core tube from the half-cylinder unwinding rack 6 to the supporting base 21. The micro-electric push rod 27 retracts the fastening needle 28, and the paper pusher electric push rod 23 continues to contract to release the fixed connection between the inner rod 26 and the core tube. The outer diameter of the rod 26 is smaller than the outer diameter of the unwinding shaft 7, that is, smaller than the inner diameter of the core barrel. At this time, the core barrel will be separated from the inner insertion rod 26 and fall on the supporting base 21, and finally slide into the waste roll box 2 through the waste roll discharge hole 2101 for recycling. At this time, the paper pushing electric push rod 23 can put the new roll of paper into the half-cylinder unwinding rack 6 for replacement, thereby realizing automatic recycling of the core barrel and automatic replacement of the roll of paper. By setting the positioning conical rod 34, when multiple roll heads of paper are put into the roll paper placement rack 20, the positioning electric push rods 32 on both sides will drive the positioning rack 33 to approach the roll of paper until the multiple positioning conical rods 34 on both sides are respectively inserted into the two ends of the multiple core barrels, thereby aligning the upper The paper rolls on the upper side are positioned. When the paper roll inside the supporting base 21 is pushed by the paper pushing plate 24, the paper rolls on the upper side are fixed, thereby preventing other paper rolls from affecting the movement of the paper rolls at the bottom and the paper pushing plate 24. When the core tube is recovered, the lifting hydraulic rods 31 on all sides drive the supporting frame 29 to slide downward along the paper roll placement rack 20, thereby driving the multiple paper rolls to descend until the new paper roll falls into the supporting base 21. At this time, the positioning electric push rods 32 drive the positioning conical rods 34 on both sides to detach from each core tube, the lifting hydraulic rods 31 drive the supporting frame 29 to move up and reset, and the positioning electric push rods 32 drive the multiple positioning conical rods 34 to reinsert the multiple positioning conical rods 34 on the upper side. Inside the two ends of the core tube, the electric paper push rod 23 can drag the new roll of paper back into the half-tube unwinding rack 6. By setting the collecting bucket 35, when one end of the roll of paper is cut into a trapezoid by the cutting knife 15, the cut paper strips will fall into the collecting bucket 35 and slide along the collecting bucket 35 to the waste paper box 3 for recycling. By setting the negative pressure bellows 36, when one end of the roll of paper is cut, the negative pressure fan on one side of the negative pressure bellows 36 will blow outward, so that the negative pressure bellows 36 and the inside of the waste paper box 3 are both in a negative pressure state, so that the waste paper strips inside the collecting bucket 35 are sucked into the waste paper box 3, preventing the paper strips from accumulating on the drop opening of the collecting bucket 35 and causing blockage.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A rotary printing paper placing device, characterized in that: The invention comprises a placing table (1), wherein a waste roll box (2) and a waste paper box (3) are fixedly installed at the bottom of the placing table (1), an isolation shell (4) is fixedly installed at the top of the placing table (1), a reeling motor (5) and a half-cylinder reeling frame (6) are fixedly installed inside the isolation shell (4), a reeling shaft (7) is arranged inside the half-cylinder reeling frame (6), one end of the reeling shaft (7) is rotatably installed inside the half-cylinder reeling frame (6) and is drivingly connected to the output shaft of the reeling motor (5), two paper pushing electric guide rails (8) are fixedly installed inside the isolation shell (4), the paper pushing electric guide rails (8) are both arranged on one side of the half-cylinder reeling frame (6), an electric slide table (9) is drivenly installed on the top of each of the paper pushing electric guide rails (8), the top of the two electric slide tables (9) are fixedly installed with the same cutting table (10), and the top of the half-cylinder reeling frame (6) is fixedly installed with a cutting table (10) facing the paper pushing electric guide rails (8). A visual recognition instrument (11) of a cutting table (10), wherein one side of the isolation shell (4) is provided with a paper feeding hole (401) corresponding to the position of the cutting table (10), a paper pushing arc plate (12) is fixedly installed on the side of the cutting table (10) close to the half-cylinder unwinding frame (6), both sides of the cutting table (10) are fixedly installed with vertically arranged fastening electric push rods (13), the top ends of the two fastening electric push rods (13) are fixedly installed with the same positioning pressure rod (14), the positioning pressure rod (14) is located at the top of the cutting table (10), the side of the cutting table (10) away from the half-cylinder unwinding frame (6) is in a trapezoidal structure, both sides of the cutting table (10) are rotatably installed with cutting knives (15), both sides of the cutting table (10) are fixedly installed with cutting motors (16), and the two cutting knives (15) are respectively driven and installed on the output shafts of the two cutting motors (16).

2. A rotary printing paper placing device according to claim 1, characterized in that: A plurality of accommodating grooves are formed on the circumferential side of the unwinding shaft (7) and are evenly distributed along the axis of the unwinding shaft (7); a spring slide seat (17) is fixedly mounted inside the accommodating grooves; a fastening protrusion (18) is slidably mounted inside the spring slide seat (17); and a plurality of evenly distributed fastening springs are fixedly mounted between the fastening protrusion (18) and the inner wall of the spring slide seat (17).

3. A rotary printing paper placing device according to claim 2, characterized in that: The ends of the fastening protruding rods (18) away from the unwinding motor (5) are provided with chamfers, and anti-curling rollers (19) are rotatably mounted on the chamfered surfaces of the fastening protruding rods (18).

4. The rotary printing paper placing device according to claim 1, characterized in that: A roll paper rack (20) is fixedly mounted inside the isolation shell (4), a supporting base (21) is fixedly mounted at the bottom of the roll paper rack (20), a transition semicircular track (22) is fixedly mounted between the supporting base (21) and the half-cylinder unwinding rack (6), the axes of the supporting base (21), the transition semicircular track (22) and the half-cylinder unwinding rack (6) are consistent, a horizontally arranged paper pushing electric push rod (23) is fixedly mounted inside the isolation shell (4), the telescopic end of the paper pushing electric push rod (23) extends into the interior of the roll paper rack (20) and is fixedly mounted with a paper pushing tray (24), the axis positions of the paper pushing electric push rod (23) and the supporting base (21) are consistent, a delivery hole (402) is opened at the top of the isolation shell (4), the position of the delivery hole (402) is consistent with the position of the roll paper rack (20), and a closing cover (25) is placed on the delivery hole (402).

5. The rotary printing paper placing device according to claim 4, characterized in that: An inner rod (26) is fixedly mounted on one side of the paper pushing plate (24) facing the semi-cylinder unwinding frame (6); the outer diameter of the inner rod (26) is smaller than the outer diameter of the unwinding shaft (7); a micro electric push rod (27) is fixedly mounted on one end of the inner rod (26); a fastening pin (28) is fixedly mounted on the telescopic end of the micro electric push rod (27); a waste roll discharge hole (2101) is formed at the bottom of the supporting base (21); the waste roll discharge hole (2101) passes through the placement table (1) and is connected to the interior of the waste roll box (2).

6. The rotary printing paper placing device according to claim 4, characterized in that: Support frames (29) are slidably mounted on both sides of the roll paper placement rack (20), and a lifting plate (30) is fixedly mounted on the bottom of the support frames (29). Lifting hydraulic rods (31) are fixedly mounted on the four corners of the waste roll box (2), and the telescopic ends of the lifting hydraulic rods (31) extend to the top of the placement table (1) and are respectively fixedly mounted on the bottoms of the two ends of the two lifting plates (30). A horizontally arranged positioning electric push rod (32) is fixedly mounted on the top of the support frames (29), and a positioning frame (33) is fixedly mounted on the telescopic ends of the positioning electric push rods (32). A plurality of positioning conical rods (34) are fixedly mounted on the sides of the two positioning frames (33) that are close to each other, and the plurality of positioning conical rods (34) are evenly distributed from top to bottom.

7. The rotary printing paper placing device according to claim 1, characterized in that: A collecting hopper (35) is fixedly installed inside the isolation shell (4). The collecting hopper (35) is located between the two paper-pushing electric guide rails (8) and corresponds to the position of the cutting knife (15). The bottom end of the collecting hopper (35) passes through the placement table (1) and extends to the inside of the waste paper box (3).

8. The rotary printing paper placing device according to claim 7, characterized in that: A negative pressure wind box (36) is provided on one side of the waste paper box (3), and a negative pressure fan is provided on one side of the negative pressure wind box (36).

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