Gripper mechanism of drum-type sheet-fed printing machine

Abstract

The utility model relates to the technical field of paper printing, and discloses a roller type sheet-fed printing machine gripper mechanism which comprises a roller, a containing groove is formed in the circumferential face of the roller in the linear direction, rotating discs are installed on a rotating shaft, and driving rods located in the containing groove are installed on the two rotating discs in a sliding mode. A mounting base is arranged between the two driving rods and connected with an L-shaped adjusting plate located in the containing groove, a fixing base rotationally mounted on the driving rods is fixed to the end of the L-shaped adjusting plate, a plurality of grippers used in cooperation with the L-shaped adjusting plate are further fixed to the driving rods, and when the driving rods move to the positions of the protruding parts, the grippers are driven by the driving rods to rotate. The driving rod can drive the L-shaped adjusting plate to stretch out and draw back, so that the L-shaped adjusting plate can drive the grippers to stretch out and clamp paper, and when the driving rod moves to the position of the cam groove, the driving rod can drive the L-shaped adjusting plate to contract and drive the multiple grippers to contract.

Description

Technical Field

[0001] The utility model relates to the technical field of paper printing, in particular to a paper gripper mechanism of a roller-type sheet-fed printing press. Background Art

[0002] Paper is one of the most commonly used reading media in our lives. From study books to promotional brochures, paper is used as a carrier for printing and then used. The quality of paper not only affects the printing effect, but also the user experience. A good printing carrier can guarantee a good printing effect, and a good printing effect can produce a good user experience. A good user experience can establish a relationship of mutual trust between producers and users. Therefore, the testing of printed paper is indispensable.

[0003] When the paper is handed over, it is transferred through the cooperation of the roller and the paper-gripping assembly; however, the current paper-gripping assembly is usually installed directly in the groove of the roller, and this installation method often has the following disadvantages: first, when the paper-gripping assembly is installed, the clamping part of the paper-gripping assembly usually needs to be protruded from the groove. If the paper-gripping assembly and other rollers are in a non-interconnected area, the paper-gripping assembly is prone to collision with other workpieces, which can easily cause damage; second, when the roller is installed, there is a distance requirement from other workpieces (digital printing nozzles), and the distance between the roller and other workpieces cannot be too far, resulting in a limited design thickness of the clamping part of the paper-gripping assembly. If the clamping part of the paper-gripping assembly is designed to be thicker, it is easy to collide with other workpieces and cause damage; if the clamping part of the paper-gripping assembly is designed to be thinner, it is easy to break after long-term use.

[0004] Therefore, we propose a paper gripper mechanism for a cylinder-type sheet-fed printing press to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a paper-gripping mechanism of a roller-type single-sheet printing press, comprising a roller, a receiving groove being provided on the circumferential surface of the roller in a straight line direction, a rotating shaft being fixed at the center of both ends of the receiving groove, a rotating disk being mounted on the rotating shaft, a driving rod being slidably mounted on both rotating disks and being located in the receiving groove, a mounting seat being provided between the two driving rods, and the mounting seat being connected to an "L"-shaped adjustment plate located in the receiving groove, a fixing seat being rotatably mounted on the driving rod being fixed at the end of the "L"-shaped adjustment plate, and a plurality of grippers being used in conjunction with the "L"-shaped adjustment plate being fixed on the driving rod.

[0007] A cam rotatably mounted on a rotating shaft is provided between the roller and the rotating disk, and a notch is provided on the cam. A driving assembly used in conjunction with the cam is installed on the driving rod.

[0008] Furthermore: the driving assembly includes a fixed cylinder fixed on the driving rod, and an extension plate is fixed to one end of the fixed cylinder, and a third sliding wheel used in conjunction with the rotating disk is installed at one end of the extension plate.

[0009] Furthermore: a hexagonal seat is fixed on the mounting seat, a square torsion spring is fixed on the hexagonal seat, and both ends of the square torsion spring extend into the interior of the driving rod.

[0010] Furthermore: a plurality of limit plates are equidistantly installed on the adjustment plate, and the driving rod is rotatably installed on the plurality of limit plates.

[0011] Furthermore: a plurality of grooves are formed on the inner side wall of the storage slot at equal intervals, and a compression spring connected to the "L"-shaped adjustment plate is installed inside the groove.

[0012] Furthermore: a plurality of drag racks are installed at equal intervals on the inner side wall of the storage tank, and a first pulley for use with a fixed seat is installed on the drag rack.

[0013] Furthermore: a plurality of "Z"-shaped plates are equidistantly installed on the lower portion of the "L"-shaped adjustment plate, and a limiting seat for use with the "Z"-shaped plates is fixed on the inner side of the storage groove.

[0014] Furthermore: a cam groove is provided on one side of the rotating disk, a protrusion is provided on one side of the cam groove, and a second pulley is installed at one end of the driving rod for use in conjunction with the cam groove and the protrusion.

[0015] Furthermore: a guard plate is installed inside the storage slot in a straight line direction, and a plurality of grippers are located on the inner side of the guard plate.

[0016] Beneficial effects of the utility model:

[0017] When the driving rod of the present invention moves to the position of the raised part, the driving rod can drive the "L"-shaped adjustment plate to extend, so that the "L"-shaped adjustment plate can drive a number of grippers to extend from the inside of the storage slot and clamp the paper; when the driving rod moves to the position of the cam slot, the driving rod can drive a number of grippers to retract through the "L"-shaped adjustment plate, so that when the gripper is in a non-intersection area with other rollers, it can retract to the inside of the storage slot to avoid collision between the gripper and other workpieces; on the other hand, since the space in the storage slot is large, the design of the grippers is not restricted by space, so that the clamping part of the grippers can be thickened to reduce the damage of the grippers due to long-term use, thereby extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the drum in the present utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the local structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the exploded structure of the connection between the driving rod and the mounting base in the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the connection between the driving rod, the rotating disk and the cam in the utility model;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating disk in the utility model.

[0025] The names corresponding to the marks in the figure are:

[0026] 1. Roller; 2. Storage slot; 3. Rotating shaft; 4. Rotating disk; 41. Cam slot; 42. Raised portion; 5. Cam; 51. Notch; 6. Driving rod; 7. Fixed seat; 8. "L"-shaped adjustment plate; 9. Gripper; 10. Driving assembly; 101. Fixed cylinder; 102. Extension plate; 103. Third sliding wheel; 11. Groove; 12. Drag frame; 13. First pulley; 14. "Z"-shaped plate; 15. Limit seat; 16. Second pulley; 17. Guard plate; 18. Tooth pad; 19. Compression spring; 20. Mounting seat; 21. Hexagonal seat; 22. Square torsion spring; 23. Limit plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0028] Embodiments of the present utility model:

[0029] A paper gripper mechanism of a drum-type sheet-fed printing press includes a drum 1. A rotating shaft 3 is fixed at the center of each end of the drum 1. The two rotating shafts 3 rotate on external wall panels (not shown in the figure). The wall panels are arranged to support the drum 1. One end of the rotating shaft 3 passes through the wall panel and is installed with a motor (not shown in the figure). The motor is also installed on the wall panel. The motor is arranged to drive the drum 1.

[0030] A receiving groove 2 is provided on the circumferential surface of the drum 1 along the axial direction, and a guard plate 17 is installed inside the receiving groove 2. The setting of the guard plate 17 protects the plurality of grippers 9 and reduces the chances of the grippers 9 being hit by external workpieces.

[0031] A rotating disk 4 is rotatably mounted on the rotating shaft 3 , and a cam groove 41 is provided on one side of the rotating disk 4 . It should be noted that a protrusion 42 is provided on the circumferential surface of the cam groove 41 .

[0032] A driving rod 6 is installed on each of the two rotating disks 4. It should be noted that: a second pulley 16 is installed at one end of the driving rod 6, and the second pulley 16 is slidably installed in the cam groove 41 or the protrusion 42. Through the arrangement of the second pulley 16, the driving rod 6 can slide more smoothly inside the cam groove 41 or the protrusion 42; a fixed seat 7 is rotatably installed on the driving rod 6, and the two fixed seats 7 are fixed to the same "L"-shaped adjustment plate 8 located in the receiving groove 2. Several compression springs 19 are equidistantly installed on the outer side of the "L"-shaped adjustment plate 8, and a groove 11 for cooperating with the compression spring 19 is opened on one side of the receiving groove 2, and one end of the compression spring 19 is fixed to the inner side wall of the groove 11. Through the arrangement of the compression spring 19, the "L"-shaped adjustment plate 8 is pushed;

[0033] A cam 5 is also rotatably mounted on the rotating shaft 3, and the cam 5 is located between the drum 1 and the rotating disk 4. It should be noted that the rotating disk 4 and the cam 5 are fixed on the same cam seat (not shown in the figure), and the cam seat is also fixed on the wall panel. The cam seat is rotatably connected to the rotating shaft 3, and the setting of the cam seat plays a role in fixing the rotating disk 4 and the cam 5; it should be noted that a notch 51 is provided on the cam 5, and a driving assembly 10 is installed on the driving rod 6 for use with the rotating disk 4. Through the cooperation of the cam 5 and the driving assembly 10, the gripper 9 is driven, which can ensure that the gripper 9 can be opened or closed; a number of grippers 9 are also fixed at equal intervals on the driving rod 6, and a number of tooth pads 18 used in conjunction with the grippers 9 are fixed on the top of the "L"-shaped adjustment plate 8. Through the cooperation of the grippers 9 and the tooth pads 18, the paper can be clamped.

[0034] Specifically, the drive assembly 10 includes a fixed cylinder 101 fixed on the drive rod 6, an extension plate 102 is fixed to the outer surface of the fixed cylinder 101, and a third sliding wheel 103 in contact with the cam 5 is installed on the extension plate 102. Through the cooperation of the drive assembly 10 and the cam 5, the jaws 9 can be opened or closed.

[0035] A mounting seat 20 is provided between the two drive rods 6, and the mounting seat 20 is fixed to the "L"-shaped adjustment plate 8. It should be noted that a hexagonal seat 21 is mounted on the "L"-shaped adjustment plate 8, and a square torsion spring 22 is fixed inside the hexagonal seat 21. A blind hole is opened at one end of the drive rod 6, and one end of the square torsion spring 22 is fixed to the inner end wall of the blind hole. The square torsion spring 22 is provided to twist the drive rod 6.

[0036] A plurality of limit plates 23 are equidistantly fixed on the “L”-shaped adjustment plate 8 , and the driving rod 6 is rotatably mounted inside the limit plates 23 . The setting of the limit plates 23 serves to limit the driving rod 6 .

[0037] Several drag racks 12 are fixed at equal intervals on the inner wall of the storage tank 2, and each drag rack 12 is equipped with two first pulleys 13 for supporting the fixed seat 7. The drag rack 12 and the first pulley 13 cooperate to support the fixed seat 7.

[0038] It should be noted that a number of "Z"-shaped plates 14 are equidistantly installed on one side of the "L"-shaped adjustment plate 8, and the multiple "Z"-shaped plates 14 are staggered with the multiple drag frames 12. A number of limit seats 15 are also equidistantly fixed on the inner wall of the storage groove 2, and a pin is fixed on one side of the limit seat 15. Through the setting of the limit seat 15 and the "Z"-shaped plate 14, the "L"-shaped adjustment plate 8 is limited.

[0039] When the paper is transferred, the two rotating shafts 3 drive the same roller 1 to rotate. At this time, the rotating disk 4 and the cam 5 are in a non-rotating state. During the rotation of the roller 1, the driving rod 6 can drive the driving rod 6 to rotate along the axis of the roller 1. If the second pulley 16 at one end of the driving rod 6 slides to the position of the protrusion 42, the protrusion 42 can push the driving rod 6 to push, and the driving rod 6 can pull the "L"-shaped adjusting plate 8 to move inside the storage groove 2 through the fixed seat 7, so that the "L"-shaped adjusting plate 8 can extend inside the storage groove 2; if the third sliding wheel 103 moves to the position of the notch 51, the square torsion spring 22 loses its torsional force and tends to its original state and drives the driving rod 6 to rotate inside several limit plates 23. One end of the driving rod 6 drives the third sliding wheel 103 to rotate through the fixed cylinder 101 and the extension plate 102 in turn, so that the third sliding wheel 103 can slide into the inside of the notch 51. During the rotation, the driving rod 6 can also drive several grippers. 9 rotates, so that the grippers 9 and the tooth pad 18 are in an open state. If the paper is conveyed between multiple grippers 9 and the tooth pad 18, as the roller 1 continues to rotate, if the third sliding wheel 103 disengages from the inside of the notch 51, the third sliding wheel 103 drives the fixed cylinder 101 to rotate in the opposite direction with the axis of the driving rod 6 through the extension plate 102. The fixed cylinder 101 can drive the driving rod 6 to rotate in the opposite direction during the rotation, so that the driving rod 6 can twist the square torsion spring 22 during the rotation (the square spring 22 at this time changes from the original state to the twisted state) and drive several grippers 9 to rotate in the opposite direction. Through the cooperation of the grippers 9 and the tooth pad 18, the paper can be clamped; if the second pulley 16 at one end of the driving rod 6 slides to the position of the cam groove 41, the driving rod 6 can move downward and drive the fixed seat 7 to move downward along the first pulley 13. The fixed seat 7 can drive the "L"-shaped adjustment plate 8 to retract toward the inside of the storage groove 2, thereby retracting the grippers 9 into the inside of the storage groove 2.

Claims

1. A paper gripper mechanism of a drum-type sheet-fed printing press, comprising a drum (1), a receiving groove (2) being provided on a circumferential surface of the drum (1) in a straight line direction, a rotating shaft (3) being fixed at the center of both ends of the receiving groove (2), characterized in that; A rotating disk (4) is mounted on the rotating shaft (3), and a driving rod (6) located in the receiving groove (2) is slidably mounted on the two rotating disks (4). A mounting seat (20) is provided between the two driving rods (6), and the mounting seat (20) is connected to an "L"-shaped adjustment plate (8) located in the receiving groove (2). A fixing seat (7) rotatably mounted on the driving rod (6) is fixed to the end of the "L"-shaped adjustment plate (8), and a plurality of teeth (9) used in conjunction with the "L"-shaped adjustment plate (8) are also fixed on the driving rod (6).

2. The gripper mechanism of a sheet-fed cylinder printing press according to claim 1, characterized in that: A cam (5) rotatably mounted on a rotating shaft (3) is provided between the roller (1) and the rotating disk (4), and a notch (51) is provided on the cam (5). A driving assembly (10) used in conjunction with the cam (5) is installed on the driving rod (6).

3. The gripper mechanism of a sheet-fed roller printing press according to claim 2, characterized in that: The driving assembly (10) comprises a fixed cylinder (101) fixed on the driving rod (6), and an extension plate (102) is fixed to one end of the fixed cylinder (101), and a third sliding wheel (103) used in conjunction with the rotating disk (4) is installed at one end of the extension plate (102).

4. The gripper mechanism of a sheet-fed cylinder printing press according to claim 1, characterized in that: A hexagonal seat (21) is fixed on the mounting seat (20), a square torsion spring (22) is fixed on the hexagonal seat (21), and both ends of the square torsion spring (22) extend into the interior of the driving rod (6).

5. The gripper mechanism of a sheet-fed cylinder printing press according to claim 1, characterized in that: A plurality of limit plates (23) are equidistantly mounted on the L-shaped adjustment plate (8), and the driving rod (6) is rotatably mounted on the plurality of limit plates (23).

6. The gripper mechanism of a sheet-fed roller printing press according to claim 1, characterized in that: The inner side wall of the receiving groove (2) is provided with a plurality of grooves (11) at equal intervals, and a compression spring (19) connected to the "L"-shaped adjustment plate (8) is installed inside the groove (11).

7. The gripper mechanism of a sheet-fed roller printing press according to claim 1, characterized in that: A plurality of drag racks (12) are equidistantly mounted on the inner side wall of the receiving groove (2), and a first pulley (13) for use in conjunction with a fixing seat (7) is mounted on the drag rack (12).

8. The gripper mechanism of a sheet-fed cylinder printing press according to claim 1, characterized in that: A plurality of "Z"-shaped plates (14) are evenly spaced and mounted on the lower portion of the "L"-shaped adjustment plate (8), and a limiting seat (15) used in conjunction with the "Z"-shaped plates (14) is fixed to the inner side of the receiving groove (2).

9. The gripper mechanism of a sheet-fed cylinder printing press according to claim 1, characterized in that: A cam groove (41) is provided on one side of the rotating disk (4), a protrusion (42) is provided on one side of the cam groove (41), and a second pulley (16) is installed on one end of the driving rod (6) for use in conjunction with the cam groove (41) and the protrusion (42).

10. The gripper mechanism of a sheet-fed roller printing press according to claim 1, characterized in that: A guard plate (17) is installed inside the receiving groove (2) along a straight line, and a plurality of gripping teeth (9) are located on the inner side of the guard plate (17).

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