A quick change mechanism for printing roll shaft

Abstract

This utility model discloses a quick-change mechanism for printing reel rolls, relating to the field of printing machinery technology. It includes a reel frame with two symmetrical upper roller grooves on its front side. A detachable reel roll is installed inside each upper roller groove. An installation groove is formed on the inner top wall of the upper roller groove, and a clamping assembly is installed within the installation groove. A drive assembly is located on the right side of the reel frame, and a roller lifting assembly is located inside the reel frame. The reel roll includes an air shaft, two rotating rings symmetrically connected to the surface of the air shaft via bearings, and a first spur gear fixedly installed at the right end of the air shaft. Compared with the prior art, the advantages of this utility model are: the roller lifting assembly supports the reel roll during disassembly, and, in conjunction with the first cylinder, drives the lifting frame to automatically tilt down close to the ground, allowing the roll material on the air shaft to contact the ground, achieving rapid transfer of heavy roll material without manual lifting, reducing operator fatigue and working time.

Description

Technical Field

[0001] This utility model relates to the field of printing machinery technology, and in particular to a quick-change mechanism for printing reel. Background Technology

[0002] Chinese Patent Publication No. CN220466972U discloses an installation mechanism for a printing press take-up roller, relating to the field of printing press technology. This utility model includes a roller, with installation and driving mechanisms on both sides of the roller. The installation mechanism includes a roller core, a first limiting ring, a second limiting ring, a first support rod, and a second support rod. The first limiting ring is fixedly connected to one end of the roller core, and a thread is formed on the side of the other end of the roller core. A threaded hole is formed inside the second limiting ring, and the threaded hole and the thread of the second limiting ring are mutually adapted. A first bevel gear is also fixedly connected to the roller core near the thread. A pair of annular grooves are formed at both ends of the roller core. The upper ends of the first and second support rods are semi-circular arc structures, and the dimensions of the semi-circular arc structures are mutually adapted to the dimensions of the annular grooves. This utility model is an installation mechanism for a printing press take-up roller, with simple installation steps and reduced labor costs.

[0003] However, this device has the following drawbacks in use: when unloading heavy rolls of material, it requires manual lifting, which is inconvenient for quickly removing the take-up roller from the workstation, and it is easy to cause injury when manually handling heavy take-up rollers. To address these drawbacks, we propose a quick-change mechanism for printing take-up rollers. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a quick-change mechanism for printing reel rolls.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution: a quick-change mechanism for printing take-up shafts, including a take-up frame, two upper roller grooves symmetrically opened on the front of the take-up frame, a detachable take-up roller is provided inside the upper roller groove, an installation groove is opened on the inner top wall of the upper roller groove, a clamping component is provided in the installation groove, a driving component is provided on the right side of the take-up frame, and a roller body lifting component is provided inside the take-up frame.

[0006] The take-up roller includes an air shaft, two rotating rings symmetrically connected to the surface of the air shaft via bearings, and a first spur gear fixedly installed at the right end of the air shaft;

[0007] The drive assembly includes a motor fixed to the right side of the take-up frame, and a second spur gear fixedly mounted on the output end of the motor;

[0008] The lifting assembly includes a lifting frame symmetrically rotatably connected to the two inner walls of the winding frame, a baffle fixed to the upper surface of the lifting frame, and a first cylinder symmetrically hinged to the two inner walls of the winding frame, with the telescopic end of the first cylinder hinged to the lower end of the lifting frame.

[0009] Preferably, the rotating ring is provided with retaining rings at both ends, and the distance between the two retaining rings is 1-2 mm greater than the width of the inner wall of the upper roller groove.

[0010] Preferably, the clamping assembly includes a second cylinder fixed to the inner wall of the mounting groove, and a clamping plate fixedly installed at the telescopic end of the second cylinder, wherein the lower end of the clamping plate has a semi-circular groove matching the outer diameter of the rotating ring.

[0011] Preferably, when the lifting frame is initially in its position, its upper surface is coplanar with the bottom wall of the upper roller groove. During unloading, the lifting frame is driven to rotate downwards and tilt close to the ground by the retraction of the first cylinder.

[0012] Preferably, the second spur gear and the first spur gear form a meshing transmission.

[0013] Preferably, the rotating ring and the semi-circular groove of the clamping plate form an axial limiting structure.

[0014] Preferably, the stroke length of the second cylinder is designed to be the distance that allows the clamping plate to completely disengage from the rotating ring.

[0015] Preferably, the opening of the upper roller groove is larger than the diameter of the rotating ring.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The roller lifting assembly can support the take-up roller when disassembling it, and in conjunction with the first cylinder, the lifting frame is automatically tilted down to near the ground, so that the roll material on the air expansion shaft contacts the ground, realizing the rapid transfer of heavy roll material without manual lifting, reducing the operator's physical exertion and working time.

[0018] 2. By using the clearance fit between the upper roller groove and the rotating ring, combined with the semi-circular groove clamping structure of the clamping plate, the radial rotation of the air shaft can be ensured while restricting the lateral movement of the air shaft. During disassembly, the clamping plate is quickly released by driving the second cylinder, realizing the quick disassembly and assembly of the take-up roller. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an undue limitation. In the drawings:

[0020] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 This is a three-dimensional schematic diagram of the lifting component of this utility model;

[0022] Figure 3 This is a side sectional view of the present invention;

[0023] Figure 4 This is a three-dimensional schematic diagram of the winding roller of this utility model;

[0024] Figure 5 for Figure 3 Enlarged structural diagram at point A in the middle.

[0025] The numbers in the diagram are: 10 winding frame, 20 upper roller groove, 30 air shaft, 31 rotating ring, 32 first spur gear, 33 retaining ring, 40 motor, 41 second spur gear, 50 lifting frame, 51 baffle, 52 first cylinder, 60 second cylinder, and 61 clamping plate. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Please see Figures 1-5 This utility model provides a technical solution: a quick-change mechanism for printing take-up rollers, including a take-up frame 10. The front of the take-up frame 10 has two symmetrical upper roller grooves 20. A detachable take-up roller is provided inside the upper roller groove 20. The take-up roller includes an air shaft 30, two rotating rings 31 symmetrically rotatably connected to the surface of the air shaft 30 through bearings, and a first spur gear 32 fixedly installed on the right end of the air shaft 30. The opening of the upper roller groove 20 is larger than the diameter of the rotating rings 31. The rotating rings 31 are provided with retaining rings 33 at both ends, and the distance between the two retaining rings 33 is 1-2 mm greater than the width of the inner wall of the upper roller groove 20. When the take-up roller slides into the upper roller groove 20 through the rotating rings 31, the retaining rings 33 at both ends form a 1-2 mm clearance fit with the inner wall of the upper roller groove 20, which restricts the axial displacement of the air shaft 30 but allows radial rotation.

[0028] The upper roller groove 20 has an installation groove on its inner top wall. A clamping assembly is installed in the installation groove. The clamping assembly includes a second cylinder 60 fixed to the inner wall of the installation groove and a clamping plate 61 fixedly installed at the telescopic end of the second cylinder 60. The lower end of the clamping plate 61 has a semi-circular groove that matches the outer diameter of the rotating ring 31. When the rotating ring 31 and the semi-circular groove of the clamping plate 61 are engaged, an axial limiting structure is formed. The stroke length of the second cylinder 60 is designed to allow the clamping plate 61 to completely disengage from the rotating ring 31. When the take-up roller slides into the upper roller groove 20, the second cylinder 60 pushes the clamping plate 61 to move downward. Through the semi-circular groove, it forms a clamping structure with the rotating ring 31, thereby fixing the take-up roller in the upper roller groove 20. At this time, the air shaft 30 can rotate within the rotating ring 31.

[0029] A drive assembly is provided on the right side of the take-up frame 10. The drive assembly includes a motor 40 fixed on the right side of the take-up frame 10 and a second spur gear 41 fixedly installed at the output end of the motor 40. The second spur gear 41 and the first spur gear 32 form a meshing transmission. When the take-up roller is fixed in the upper roller groove 20, the first spur gear 32 will mesh with the second spur gear 41. After the drive motor 40 drives the second spur gear 41 to rotate, the second spur gear 41 meshes with the first spur gear 32, thereby driving the air shaft 30 to rotate and take up the roll material.

[0030] The take-up frame 10 is equipped with a roller lifting assembly. The lifting assembly includes a lifting frame 50 symmetrically rotatably connected to the two inner side walls of the take-up frame 10, a baffle 51 fixed to the upper surface of the lifting frame 50, and a first cylinder 52 symmetrically hinged to the two inner side walls of the take-up frame 10. The telescopic end of the first cylinder 52 is hinged to the lower end of the lifting frame 50. When the lifting frame 50 is initially in the same position, its upper surface is coplanar with the inner bottom wall of the upper roller groove 20. When unloading, the first cylinder 52 retracts to drive the lifting frame 50 to rotate downwards and tilt close to the ground.

[0031] When the air shaft 30 finishes winding and unloading, the second cylinder 60 is driven to retract, thereby causing the clamping plate 61 to disengage from the rotating ring 31. Then, the air shaft 30 slides along the lifting frame 50 and approaches the baffle 51. At this time, the rotating ring 31 will disengage from the upper roller groove 20. Then, the first cylinder 52 is driven to retract, thereby causing the lifting frame 50 to rotate. At this time, the lifting frame 50 will approach the ground. The baffle 51 can limit the air shaft 30 to prevent it from disengaging from the lifting frame 50. Thus, the lifting frame 50 can be used to lift and unload the air shaft 30, avoiding the impact of excessive roll weight on the replacement speed of the air shaft 30 and improving replacement efficiency.

[0032] Specifically, the working principle and operation method of this utility model are as follows:

[0033] Place the take-up roller: Slide the rotating ring 31 of the take-up roller into the upper roller groove 20 of the take-up frame 10, and achieve axial positioning by the 1-2mm gap between the retaining ring 33 and the groove wall of the upper roller groove 20.

[0034] Locking clamping assembly: Activate the second cylinder 60 to push the clamping plate 61 down, so that its semi-circular groove and the rotating ring 31 form a clamping structure, fixing the take-up roller inside the upper roller groove 20. At this time, the air expansion shaft 30 can rotate freely in the radial direction.

[0035] Drive engagement: The first spur gear 32 at the right end of the air shaft 30 automatically engages with the second spur gear 41 output by the motor 40. Starting the motor 40 will drive the air shaft 30 to rotate for winding.

[0036] Unloading operation process

[0037] Release clamping: retract the second cylinder 60 to completely disengage the clamping plate 61 from the rotating ring 31, thus releasing the fixation on the take-up roller.

[0038] Shift to the lifting frame 50: Push the air shaft 30 along the lifting frame 50 to slide towards the baffle 51 until the rotating ring 31 disengages from the upper roller groove 20.

[0039] Inclined unloading: The first cylinder 52 is retracted, driving the lifting frame 50 to rotate downward to an inclined state (close to the ground). Gravity is used to make the air shaft 30 slide down the inclined plane to the ground, completing the safe transfer of heavy roll material.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art based on the technical solution and concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-change mechanism for printing reel, comprising a reel holder (10), characterized in that: The take-up frame (10) has two symmetrical upper roller grooves (20) on its front side. A detachable take-up roller is provided inside the upper roller groove (20). An installation groove is provided on the inner top wall of the upper roller groove (20). A clamping component is provided in the installation groove. A drive component is provided on the right side of the take-up frame (10). A roller body lifting component is provided inside the take-up frame (10). The take-up roller includes an air shaft (30), two rotating rings (31) symmetrically connected to the surface of the air shaft (30) via bearings, and a first spur gear (32) fixedly installed on the right end of the air shaft (30); The drive assembly includes a motor (40) fixed to the right side of the take-up frame (10) and a second spur gear (41) fixedly mounted on the output end of the motor (40); The lifting assembly includes a lifting frame (50) symmetrically rotatably connected to the two inner walls of the winding frame (10), a baffle (51) fixed to the upper surface of the lifting frame (50), and a first cylinder (52) symmetrically hinged to the two inner walls of the winding frame (10). The telescopic end of the first cylinder (52) is hinged to the lower end of the lifting frame (50).

2. The quick-change mechanism for printing reel as described in claim 1, characterized in that: The rotating ring (31) is provided with retaining rings (33) at both ends, and the distance between the two retaining rings (33) is 1-2 mm greater than the width of the inner wall of the upper roller groove (20).

3. The quick-change mechanism for printing reel as described in claim 1, characterized in that: The clamping assembly includes a second cylinder (60) fixed to the inner wall of the mounting groove, and a clamping plate (61) fixedly installed at the telescopic end of the second cylinder (60). The lower end of the clamping plate (61) has a semi-circular groove that matches the outer diameter of the rotating ring (31).

4. The quick-change mechanism for printing reel as described in claim 1, characterized in that: When the lifting frame (50) is initially in its position, its upper surface is coplanar with the inner bottom wall of the upper roller groove (20). During unloading, the lifting frame (50) is driven to rotate downwards and tilt close to the ground by the retraction of the first cylinder (52).

5. The quick-change mechanism for printing reel as described in claim 1, characterized in that: The second spur gear (41) and the first spur gear (32) form a meshing transmission.

6. The quick-change mechanism for printing reel as described in claim 3, characterized in that: When the rotating ring (31) engages with the semi-circular groove of the clamping plate (61), it forms an axial limiting structure.

7. The quick-change mechanism for printing reel according to claim 3, characterized in that: The stroke length of the second cylinder (60) is designed to allow the clamping plate (61) to move completely away from the rotating ring (31).

8. The quick-change mechanism for printing reel as described in claim 1, characterized in that: The opening of the upper roller groove (20) is larger than the diameter of the rotating ring (31).

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