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CN-224224722-U - Printing plate roller reversing device

CN224224722UCN 224224722 UCN224224722 UCN 224224722UCN-224224722-U

Abstract

The utility model relates to a reversing device for a printing plate roller, which comprises a frame, wherein a gear assembly is arranged on the frame, the gear assembly comprises a driven gear and a driving gear, the driving gear is in transmission connection with a power source, the gear assembly also comprises a first gear and a reversing gear set, the first gear moves between a working position and a standby position along the axial direction of a first shaft, the first gear is connected with the driving gear and the driven gear when being positioned at the working position, the reversing gear set comprises a third gear and a second gear, the second gear moves between the working position and the standby position along the axial direction of a second shaft, the third gear is meshed with the second gear when being positioned at the working position, the reversing gear set is connected with the driving gear and the driven gear, the two meshed gears are in opposite directions, and the reversing gear set is more than the first gear, so that the driven gear is opposite when the reversing gear set participates in transmission between the driven gear and the driving gear.

Inventors

  • Ruan changzheng
  • YANG JIANGPING

Assignees

  • 温州天易机械有限公司

Dates

Publication Date
20260512
Application Date
20250626

Claims (9)

  1. 1. The reversing device for the printing plate roller comprises a frame (1), wherein a gear assembly (2) is arranged on the frame (1), the gear assembly (2) comprises a driven gear (3) and a driving gear (5), the driven gear (3) is used for driving the printing plate roller, and the driving gear (5) is in transmission connection with a power source, and the reversing device is characterized in that the gear assembly (2) further comprises A first gear (6) having a working position and a standby position, the first gear (6) being disposed on a first shaft (4), the first gear (6) being movable along an axial direction of the first shaft (4) between the working position and the standby position, the first gear (6) engaging the driving gear (5) and the driven gear (3) when the first gear (6) is in the working position; The reversing gear set (7) comprises a third gear (8) and a second gear (9), the second gear (9) is provided with a working position and a standby position, the second gear (9) is arranged on a second shaft (10), the second gear (9) moves between the working position and the standby position along the axial direction of the second shaft (10), when the second gear (9) is in the working position, the third gear (8) is meshed with the second gear (9) and the reversing gear set (7) is connected with the driving gear (5) and the driven gear (3).
  2. 2. A printing roller reversing device according to claim 1, characterized in that the first shaft (4) and the second shaft (10) are both in driving connection with a reversing cylinder (11), and that the first gear (6) or the second gear (9) is in an operating position during operation.
  3. 3. A reversing device for printing plate rollers according to claim 2, characterized in that the frame (1) is provided with a first guide hole (12) and a second guide hole, and the first guide hole (12) and the second guide hole are respectively provided for the first shaft (4) and the second shaft (10) to extend in.
  4. 4. A reversing device for printing plate rollers according to claim 1, characterized in that a casing (14) is arranged on the frame (1), the reversing cylinder (11) is arranged on the casing (14), the casing (14) and the frame (1) form a protection cavity, and the gear assembly (2) is arranged in the casing (14).
  5. 5. The reversing device for printing roller according to claim 1, wherein the driving gear (5) is in transmission connection with the spline shaft (15), the spline shaft (15) is in concave-convex fit with a clutch gear (16), the clutch gear (16) is provided with an outer gear ring (17), a first bevel gear (18) is sleeved on the spline shaft (15), the first bevel gear (18) is meshed with a second bevel gear (19), the second bevel gear (19) is in transmission connection with the power source, the inner gear ring is sequentially provided with an inner gear ring (20) and an inner ring (13), the inner ring (13) is matched with the spline shaft (15), the clutch gear (16) is provided with an operating position and a standby position, the clutch gear (16) moves between the operating position and the standby position along the axial direction of the spline shaft (15), and the outer gear ring (17) is meshed with the inner gear ring (20) when the clutch gear (16) is in the operating position.
  6. 6. A reversing device for a printing plate roller according to claim 5, wherein a plurality of grooves (21) are formed in the circumferential direction of the spline shaft (15), the grooves (21) extend along the axial direction of the spline shaft (15), protrusions (22) are formed in the circumferential direction of the inner ring of the clutch gear (16), and the protrusions (22) are in one-to-one correspondence with the grooves (21).
  7. 7. The printing plate roller reversing device according to claim 5, wherein a driving groove (23) and an outer gear ring (17) are sequentially arranged on the outer ring of the clutch gear (16) along the axial direction of the spline shaft (15), the driving groove (23) is in sliding fit with a sliding block (24), the sliding block (24) is connected with one end of a driven swing arm (25), the other end of the driven swing arm (25) is connected with a rotating shaft (26), the rotating shaft (26) is rotatably arranged, the rotating shaft (26) is connected with a driving swing arm (27), and the driving swing arm (27) is hinged with an output shaft of a clutch cylinder (28).
  8. 8. A reversing device for printing plate rollers according to claim 7, wherein a protective housing (29) is further arranged on the frame (1), the clutch cylinder (28) is mounted on the protective housing (29), the rotating shaft (26) is rotatably arranged on the protective housing (29), and the clutch gear (16), the first bevel gear (18) and the second bevel gear (19) are located in the protective housing (29).
  9. 9. A reversing device for printing plate rollers according to claim 1, wherein a sliding sleeve (30) is arranged on the frame (1), the sliding sleeve (30) is connected with a top plate cylinder (31), the driven gear (3) is meshed with a transmission gear (32), the transmission gear (32) is connected with a top plate shaft (33) in a transmission mode, one end of the top plate shaft (33) is provided with a conical head (34), the other end of the top plate shaft (33) stretches into the sliding sleeve (30), the other end of the top plate shaft (33) is connected with a driving block (35), the driving block (35) is in transmission connection with the top plate cylinder (31), and the driving block (35) is in sliding fit with the sliding sleeve (30).

Description

Printing plate roller reversing device Technical Field The utility model relates to a reversing device for a printing plate roller. Background In the double-sided printing process, after the printer finishes printing the front, the functions of the winding mechanism and the unwinding mechanism are exchanged, and the plate roller is required to be reversed to adapt to the change of the film feeding direction, the servo motor is adopted to realize forward and reverse rotation at present, the cost is high, and a reversing structure with low cost is designed. Disclosure of utility model In view of the technical problems in the background art, the utility model aims to provide a printing plate roller reversing device, wherein a first gear and a reversing gear set are designed to participate in transmission between a driven gear and a driving gear in turn, so that the rotation reversing of the printing plate roller is realized. In order to solve the technical problems, the reversing device for the printing plate roller comprises a rack, wherein a gear assembly is arranged on the rack, the gear assembly comprises a driven gear and a driving gear, the driven gear is used for driving the printing plate roller, the driving gear is in transmission connection with a power source, the gear assembly further comprises a first gear and a reversing gear set, the first gear is provided with a working position and a standby position, the first gear is arranged on a first shaft, the first gear moves between the working position and the standby position along the axial direction of the first shaft, the first gear is connected with the driving gear and the driven gear when the first gear is in the working position, the reversing gear set comprises a third gear and a second gear, the second gear is provided with the working position and the standby position, the second gear is arranged on a second shaft, the second gear moves between the working position and the standby position along the axial direction of the second shaft, the third gear is meshed with the second gear when the second gear is in the working position, and the driving gear is connected with the reversing gear. In this scheme, two gears of meshing turn to the opposite direction, and reversing gear group has more one gear than first gear for reversing gear group takes part in driven gear and the driven gear reverse when the transmission between driving gear. Preferably, the first shaft and the second shaft are in transmission connection with a reversing cylinder, and the first gear or the second gear is in a working position when in operation. In this scheme, corresponding switching-over cylinder action drives first axle and second axle and stretches out and draws back for first gear and second gear reach working position, and the switching-over is convenient. Preferably, a first guide hole and a second guide hole are formed in the frame, and the first guide hole and the second guide hole are respectively used for enabling the first shaft and the second shaft to extend in. In this scheme, the corresponding guiding hole guides the expansion and contraction of the corresponding shaft. Preferably, a case is arranged on the frame, the reversing cylinder is mounted on the case, the case and the frame form a protection cavity, and the gear assembly is positioned in the case. In this scheme, the protection cavity is waterproof dustproof. Preferably, the driving gear is in transmission connection with the spline shaft, the spline shaft is in concave-convex fit with a clutch gear, the clutch gear is provided with an outer gear ring, a first bevel gear is sleeved on the spline shaft, a second bevel gear is meshed with the first bevel gear, the second bevel gear is in transmission connection with the power source, an inner gear ring and an inner ring are sequentially arranged on an inner ring of the bevel gear, the inner ring is matched with the spline shaft, the clutch gear is provided with a working position and a standby position, the clutch gear axially moves between the working position and the standby position along the spline shaft, and the outer gear ring is meshed with the inner gear ring when the clutch gear is in the working position. In this scheme, the drive connection of spline shaft and power supply is controllable to be disconnected, need not to stop the power supply and can commutate. Preferably, the spline shaft is circumferentially provided with a plurality of grooves, the grooves extend along the axial direction of the spline shaft, the clutch gear inner ring is circumferentially provided with protrusions, and the protrusions are in one-to-one correspondence with the grooves. In this solution, the grooves and the protrusions cooperate to provide an axial movement space for the clutch gear and to realize the transmission. Preferably, the clutch gear outer ring is equipped with drive slot and outer ring gear in proper order along the integral key shaft axial,