A quick-release mechanism for rubber roller of offset printing machine

Abstract

The utility model discloses a quick-release mechanism for the rubber roller of an offset printing machine, which belongs to the technical field of offset printing machines, and includes a support seat and a rubber roller column, wherein a fine-tuning mechanism is arranged on the top of the support seat. In the utility model, the support bearing and the rubber roller shaft at the end of the rubber roller column are placed through the bearing slots and the shaft slots on the bearing seat and the bearing cover, and the threaded cooperation between the bidirectional screw and the movable seat drives the plug column to be inserted into the insertion hole to fix the bearing seat and the bearing cover, and in addition, the bidirectional screw is fixed by inserting the first screw into the first screw hole, thereby realizing the function of stably supporting the rubber roller column, and when disassembling, the end of the first screw is moved out of the first screw hole, and the plug column is driven to be separated from the inner cavity of the insertion hole through the cooperation of the bidirectional screw and the movable seat, thereby realizing convenient disassembly between the bearing seat and the bearing cover, so as to facilitate the disassembly of the rubber roller column.

Description

Technical Field

[0001] The utility model relates to the technical field of offset printing machines, in particular to a quick-release mechanism for a rubber roller of an offset printing machine. Background Art

[0002] An offset press is a type of lithographic printing press. During printing, the printed image is first printed from the printing plate onto a rubber cylinder, and then transferred to the paper by the rubber cylinder. Offset presses can be divided into single-color, two-color, four-color, and multi-color presses according to the number of colors that can be printed in one pass; they can be divided into small offset presses, six-opening, four-opening, folio, and full-sheet presses according to the maximum paper format. In addition, there are double-sided presses that can print on both sides at the same time in one pass; they can be divided into alcohol presses, waterwheel presses, and waterless offset presses according to the dampening system. The rubber roller of an offset press needs to be replaced after a certain period of use.

[0003] After searching, the utility model patent with the announcement number CN210504440U discloses a rubber roller quick-release device, which includes a rubber roller bearing seat, which has a semicircular groove for placing the roller shaft and opening upwards, and a placement recess for providing a limit for the bearing seat pressure plate to cooperate; the bearing seat pressure plate is placed in the placement recess and detachably assembled to the rubber roller bearing seat. The two ends of the roller shaft are sleeved with bearings, the inner ring of the bearing is sleeved on the two ends of the roller shaft, and the outer ring is placed on the semicircular groove. The bearing is assembled and fixed by the bearing seat pressure plate and the rubber roller bearing 1, so that the roller can rotate relative to the rubber roller bearing seat, so that the rubber roller can be quickly disassembled, thereby achieving the purpose of quick disassembly of the rubber roller.

[0004] However, the above patent still has the following shortcomings: when disassembling and assembling, the screws need to be removed and installed one by one, and the convenience needs to be improved. In addition, the bearing position at the end of the rubber roller is easily offset, which makes it difficult to ensure that the bearing is placed exactly in the semicircular groove on the rubber roller bearing seat. For this reason, we propose a quick-release mechanism for the rubber roller of an offset printing machine. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide a quick-release mechanism for the rubber roller of an offset printing press.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A quick-release mechanism for a rubber roller of an offset printing machine comprises a support seat and a rubber roller column, a fine-tuning mechanism is arranged on the top of the support seat, a bearing seat is arranged on the top of the fine-tuning mechanism, two connecting columns are fixedly connected to the two sides of the top surface of the bearing seat, and the connecting columns are provided with insertion holes, a bearing cover is arranged on the top of the bearing seat, plug blocks are fixedly connected to the two sides of the bearing cover, and the ends of the plug blocks are sleeved to the inner sides of the two connecting columns, the two ends of the bearing seat and the bearing cover are respectively provided with rotating shaft grooves, the top surface of the bearing seat and the bottom surface of the bearing cover are respectively provided with bearing grooves, a rubber roller shaft is arranged on the rubber roller column, and a support bearing is fixedly sleeved on the end of the rubber roller shaft, the support bearing is sleeved in the inner cavity of the bearing slot, the rubber roller shaft is sleeved in the inner cavity of the rotating shaft slot, and a fixing mechanism is arranged on the bearing cover and the plug block.

[0008] As a preferred solution of the utility model, the fine-tuning mechanism includes a groove opened on the top surface of the support seat and a plurality of second screw holes opened on the outside of the support seat, the inner cavity of the groove is rotatably connected to a screw rod, one end of the screw rod extends to the outside of the support seat and is fixedly connected to a second knob, a second screw is sleeved on the second knob, the end of the second screw is threadedly sleeved into the inner cavity of a second screw hole, the outer side of the screw rod is threadedly sleeved with a T-shaped seat, the top surface of the T-shaped seat extends to the top of the support seat and is connected to the bottom surface of the bearing seat, and the plurality of second screw holes are arranged in a circle around the axis of the screw rod.

[0009] As a preferred scheme of the utility model, the fixing mechanism includes a movable groove opened inside the bearing cover and a plurality of first screw holes opened on the outside of an insert block, the inner cavity of the movable groove is rotatably connected with a bidirectional screw rod, the outer side of the bidirectional screw rod is threadedly sleeved with two movable seats, the outer sides of the two movable seats are respectively fixedly connected with two plug posts, the ends of the plug posts are respectively movably sleeved into the inner cavity of the insert hole, the end of the bidirectional screw rod extends to the outside of the insert block and is fixedly connected with a first knob, the first knob is sleeved with a first screw, the end of the first screw is threadedly sleeved into the inner cavity of a first screw hole, and the plurality of first screw holes are arranged in a circle with the axis of the bidirectional screw rod.

[0010] As a preferred solution of the utility model, the inner diameter of the rotating shaft slot is equal to the outer diameter of the rubber roller shaft, and the inner diameter of the bearing slot is equal to the outer diameter of the supporting bearing.

[0011] As a preferred solution of the present invention, the inner wall of the groove fits with the side surface of the T-shaped seat.

[0012] As a preferred solution of the utility model, the side surface of the movable seat and the inner wall of the movable groove are in contact with each other, and the outer diameter of the plug post is equal to the inner diameter of the plug hole.

[0013] As a preferred solution of the present invention, the bottom surface of the bearing seat and the top surface of the support seat are in contact with each other.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In the present invention, the support bearing and the rubber roller shaft at the end of the rubber roller column are placed through the bearing slots and the shaft slots on the bearing seat and the bearing cover; and the threaded cooperation between the bidirectional screw and the movable seat drives the plug post to be inserted into the insertion hole to fix the bearing seat and the bearing cover; in addition, the bidirectional screw is fixed by inserting the first screw into the first screw hole, thereby realizing the function of stably supporting the rubber roller column; when disassembling, the end of the first screw is removed from the first screw hole, and the cooperation between the bidirectional screw and the movable seat drives the plug post to be separated from the inner cavity of the insertion hole, thereby realizing convenient disassembly between the bearing seat and the bearing cover, so as to facilitate the disassembly of the rubber roller column.

[0016] (2) In the utility model, the threads of the screw rod and the T-seat are used to drive the T-seat and the bearing seat to move, so as to move the bearing slot on the bearing seat to a position convenient for placing the support bearing. In addition, the second knob, the screw rod, the T-seat and the bearing seat are fixed by installing the second screw thread into the second screw hole, so that the support bearing is placed exactly on the bearing seat, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is an exploded view of the overall structure of the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the support seat of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the bearing cover of the utility model;

[0021] Figure 5 It is a cross-sectional schematic diagram of the bearing cover of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1. Support seat; 2. Rubber roller column; 3. Rubber roller shaft; 4. Support bearing; 5. Fine adjustment mechanism; 6. Bearing seat; 7. Connecting column; 8. Socket; 9. Bearing cover; 10. Insert block; 11. Bearing slot; 12. Shaft slot; 13. Fixing mechanism; 14. Second screw hole; 15. Groove; 16. Screw; 17. T-type seat; 18. Second knob; 19. Second screw; 20. Moving slot; 21. First screw hole; 22. Bidirectional screw; 23. Moving seat; 24. Insert column; 25. First knob; 26. First screw. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Example:

[0028] See also Figure 1-5 A quick-release mechanism for a rubber roller of an offset printing machine comprises a support seat 1 and a rubber roller column 2. A fine-tuning mechanism 5 is provided on the top of the support seat 1. A bearing seat 6 is provided on the top of the fine-tuning mechanism 5. Two connecting columns 7 are fixedly connected to both sides of the top surface of the bearing seat 6. Insertion holes 8 are provided on the connecting columns 7. A bearing cover 9 is provided on the top of the bearing seat 6. Insertion blocks 10 are fixedly connected to both sides of the bearing cover 9. The ends of the insert blocks 10 are sleeved to the inner sides of the two connecting columns 7. A rotating shaft groove 12 is provided at both ends of the bearing seat 6 and the bearing cover 9. A bearing groove 11 is provided on the top surface of the bearing seat 6 and the bottom surface of the bearing cover 9. A rubber roller shaft 3 is provided on the rubber roller column 2. A support bearing 4 is fixedly sleeved on the end of the rubber roller shaft 3. The support bearing 4 is sleeved in the inner cavity of the bearing groove 11. The rubber roller shaft 3 is sleeved in the inner cavity of the rotating shaft groove 12. A fixing mechanism 13 is provided on the bearing cover 9 and the insert block 10.

[0029] For details, please refer to Figures 1 to 3 The fine-tuning mechanism 5 includes a groove 15 opened on the top surface of the support seat 1 and a plurality of second screw holes 14 opened on the outside of the support seat 1. The inner cavity of the groove 15 is rotatably connected with a screw rod 16. One end of the screw rod 16 extends to the outside of the support seat 1 and is fixedly connected with a second knob 18. A second screw 19 is sleeved on the second knob 18. The end of the second screw 19 is threadedly sleeved into the inner cavity of a second screw hole 14. A T-shaped seat 17 is threadedly sleeved on the outer side of the screw rod 16. The top surface of the T-shaped seat 17 extends to the top of the support seat 1 and is connected to the bottom surface of the bearing seat 6. The plurality of second screw holes 14 are arranged in a circle around the axis of the screw rod 16.

[0030] In this embodiment, the screw rod 16 and the second knob 18 are fixed by inserting the end of the second screw 19 into the second screw hole 14 , thereby fixing the positions of the T-shaped seat 17 and the bearing seat 6 .

[0031] For details, please refer to Figure 1 and Figure 5 The fixing mechanism 13 includes a movable groove 20 opened inside the bearing cover 9 and a plurality of first screw holes 21 opened on the outside of an insert block 10. The inner cavity of the movable groove 20 is rotatably connected with a bidirectional screw rod 22. The outer side of the bidirectional screw rod 22 is threadedly sleeved with two movable seats 23. The outer sides of the two movable seats 23 are respectively fixedly connected with two plug posts 24. The ends of the plug posts 24 are respectively movably sleeved into the inner cavity of the plug hole 8. The end of the bidirectional screw rod 22 extends to the outside of the insert block 10 and is fixedly connected with a first knob 25. The first knob 25 is sleeved with a first screw 26. The end of the first screw 26 is threadedly sleeved into the inner cavity of a first screw hole 21. The plurality of first screw holes 21 are arranged in a circle with the axis of the bidirectional screw rod 22.

[0032] In this embodiment, the first knob 25 and the bidirectional screw rod 22 are fixed by inserting the first screw 26 into the first screw hole 21 , thereby fixing the movable seat 23 and the plug column 24 .

[0033] For details, please refer to Figures 2 to 4 The inner diameter of the rotating shaft slot 12 is equal to the outer diameter of the rubber roller shaft 3 , and the inner diameter of the bearing slot 11 is equal to the outer diameter of the supporting bearing 4 .

[0034] In this embodiment, the stability of the rubber roller shaft 3 in the rotating shaft slot 12 is ensured, and the stability of the support bearing 4 in the bearing slot 11 is ensured.

[0035] For details, please refer to Figure 3 The inner wall of the groove 15 fits with the side surface of the T-shaped seat 17 .

[0036] In this embodiment, the inner wall of the groove 15 is used to limit the T-shaped seat 17 so that the T-shaped seat 17 can only move along the axial direction of the screw rod 16 .

[0037] For details, please refer to Figures 3 to 5 The side surface of the movable seat 23 is in contact with the inner wall of the movable groove 20 , and the outer diameter of the plug post 24 is equal to the inner diameter of the plug hole 8 .

[0038] In this embodiment, the inner wall of the movable groove 20 is used to limit the movable seat 23, so that the movable seat 23 can only move along the axial direction of the bidirectional screw rod 22. In addition, the stability of the insertion column 24 into the inner cavity of the socket 8 is ensured, and the stability of the bearing cover 9 installed on the connecting column 7 is ensured.

[0039] For details, please refer to Figure 1 , the bottom surface of the bearing seat 6 and the top surface of the support seat 1 are in contact with each other.

[0040] In this embodiment, the top surface of the support seat 1 is used to support the bearing seat 6 to ensure the stability of the bearing seat 6 in supporting the rubber roller column 2, the rubber roller shaft 3 and the support bearing 4.

[0041] Working principle: When in use, first turn the second knob 18 to drive the screw 16 to rotate, and use the cooperation between the screw 16 and the T-shaped seat 17 to drive the T-shaped seat 17 and the bearing seat 6 to move, so that the rubber roller shaft 3 and the support bearing 4 at the end of the rubber roller column 2 are just placed in the shaft slot 12 and the bearing slot 11, and then turn the second screw 19 to make its end threadedly installed in the inner cavity of the second screw hole 14, and then place the bearing cover 9 on the upper part of the bearing seat 6, so that the bearing slot 11 and the shaft slot 12 on the bottom of the bearing cover 9 are stuck in the support bearing 4 and the rubber roller The upper part of the shaft 3 and the plug block 10 on the side of the bearing cover 9 are inserted into the inner sides of the two connecting columns 7. Finally, the first knob 25 is turned to drive the bidirectional screw 22 to rotate, and the threaded cooperation between the bidirectional screw 22 and the two moving seats 23 is used to drive the moving seat 23 and the plug column 24 to move, so that the end of the plug column 24 is inserted into the socket 8 on the connecting column 7, thereby installing the bearing cover 9 above the bearing seat 6, and turning the first screw 26 so that its end is threadedly installed in the inner cavity of the first screw hole 21, and then fixing the first knob 25 and the bidirectional screw 22.

[0042] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A quick-release mechanism for a rubber roller of an offset printing press, comprising a support seat (1) and a rubber roller column (2), characterized in that: The top of the support seat (1) is provided with a fine adjustment mechanism (5), the top of the fine adjustment mechanism (5) is provided with a bearing seat (6), two connecting columns (7) are fixedly connected to the two sides of the top surface of the bearing seat (6), and the connecting columns (7) are provided with insertion holes (8), the top of the bearing seat (6) is provided with a bearing cover (9), the two sides of the bearing cover (9) are fixedly connected to the plug blocks (10), the ends of the plug blocks (10) are sleeved on the inner sides of the two connecting columns (7), and the bearing seat (6) and the shaft The two ends of the bearing cover (9) are respectively provided with a rotating shaft slot (12); the top surface of the bearing seat (6) and the bottom surface of the bearing cover (9) are respectively provided with a bearing slot (11); a rubber roller shaft (3) is arranged on the rubber roller column (2); a support bearing (4) is fixedly sleeved at the end of the rubber roller shaft (3); the support bearing (4) is sleeved in the inner cavity of the bearing slot (11); the rubber roller shaft (3) is sleeved in the inner cavity of the rotating shaft slot (12); and a fixing mechanism (13) is arranged on the bearing cover (9) and the insert block (10).

2. The quick-release mechanism for the rubber roller of an offset printing press according to claim 1, characterized in that: The fine-tuning mechanism (5) comprises a groove (15) formed on the top surface of the support seat (1) and a plurality of second screw holes (14) formed on the outer side of the support seat (1); a screw rod (16) is rotatably connected to the inner cavity of the groove (15); one end of the screw rod (16) extends to the outside of the support seat (1) and is fixedly connected to a second knob (18); a second screw (19) is sleeved on the second knob (18); the end of the second screw (19) is threadedly sleeved into the inner cavity of a second screw hole (14); a T-shaped seat (17) is threadedly sleeved on the outer side of the screw rod (16); the top surface of the T-shaped seat (17) extends to the top of the support seat (1) and is connected to the bottom surface of the bearing seat (6); and the plurality of second screw holes (14) are arranged in a circle around the axis of the screw rod (16).

3. The quick-release mechanism for the rubber roller of an offset printing press according to claim 1, characterized in that: The fixing mechanism (13) comprises a movable groove (20) provided inside the bearing cover (9) and a plurality of first screw holes (21) provided outside an insert block (10); the inner cavity of the movable groove (20) is rotatably connected with a bidirectional screw rod (22); the outer side of the bidirectional screw rod (22) is threadedly sleeved with two movable seats (23); the outer sides of the two movable seats (23) are respectively fixedly connected with two plug posts (24); the ends of the plug posts (24) are respectively movably sleeved into the inner cavity of the insert hole (8); the end of the bidirectional screw rod (22) extends to the outside of the insert block (10) and is fixedly connected with a first knob (25); the first knob (25) is sleeved with a first screw (26); the end of the first screw (26) is threadedly sleeved into the inner cavity of a first screw hole (21); and the plurality of first screw holes (21) are arranged in a circle around the axis of the bidirectional screw rod (22).

4. The quick-release mechanism for the rubber roller of an offset printing press according to claim 1, characterized in that: The inner diameter of the rotating shaft slot (12) is equal to the outer diameter of the rubber roller shaft (3), and the inner diameter of the bearing slot (11) is equal to the outer diameter of the supporting bearing (4).

5. The quick-release mechanism for the rubber roller of an offset printing press according to claim 2, characterized in that: The inner wall of the groove (15) is in contact with the side surface of the T-shaped seat (17).

6. The quick-release mechanism for the rubber roller of an offset printing press according to claim 3, characterized in that: The side surface of the movable seat (23) is in contact with the inner wall of the movable groove (20), and the outer diameter of the plug post (24) is equal to the inner diameter of the plug hole (8).

7. The quick-release mechanism for the rubber roller of an offset printing press according to claim 1, characterized in that: The bottom surface of the bearing seat (6) is in contact with the top surface of the support seat (1).

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