A stable rubber roller frame structure for offset printing machine

Abstract

The utility model discloses a stable rubber roller frame structure of an offset printing machine, which belongs to the technical field of offset printing machines, and comprises a support column and a rubber roller, wherein a driving device is arranged on the top of the support column. In the utility model, when the mounting flange and the fixed flange at the end of the support shaft on the rubber roller are fitted, the elastic force of the spring is used to drive the sleeve to move to the outside of the mounting flange and the fixed flange, and the outside of the mounting flange and the fixed flange is supported by the sleeve, and the latch on the sleeve penetrates the second mounting hole and the first mounting hole on the fixed flange and the mounting flange, and the butterfly screw is threadedly installed on the first screw hole on the outside of the sleeve, and the middle part of the butterfly screw penetrates the latch and the butterfly screw on the support shaft, so as to stably connect the mounting flange and the fixed flange, and ensure the connection stability and firmness between the mounting flange and the fixed flange.

Description

Technical Field

[0001] The utility model relates to the technical field of offset printing machines, in particular to a stable rubber roller frame structure 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 sheet-fed offset presses and web offset presses according to the different paper feeding methods; they can be divided into single-color, two-color, four-color and multi-color presses according to the number of colors printed in one paper feed; they can be divided into small offset presses, six-opening, four-opening, folio and full-sheet presses according to the maximum paper format. Sheet-fed offset presses are lithographic printing presses used to print high-end commercial prints and packaging prints. They are the mainstream of modern paper printing. During the offset printing process, the stability of the rubber roller must be ensured to ensure the quality of the offset printing.

[0003] After searching, the utility model patent with announcement number CN215662406U discloses a rubber roller fixing device of an offset printing machine, comprising a rubber roller body and a fixing mechanism, wherein the two ends of the rubber roller body are respectively fixedly connected with a first flange, the rubber roller body is fixedly connected to the fixing mechanism through the first flange, and the fixing mechanism comprises a support column, a driving motor, a screw, a sliding sleeve, a fixing plate and a supporting assembly; a side wall of the support column at one end facing the rubber roller body is provided with a receiving groove for accommodating the supporting assembly, the screw penetrates the receiving groove and is rotatably connected to the support column, a sliding sleeve is threadedly sleeved at one end of the screw facing the rubber roller body, a fixing plate is fixedly connected at one end of the sliding sleeve away from the support column, a supporting assembly is fixedly connected to the upper surface of the fixing plate, and a supporting assembly is fixedly connected at one end of the screw away from the supporting assembly, and a side wall of the support column is penetrated at one end of the screw away from the supporting assembly and is fixedly connected to the output shaft of the driving motor; the rubber roller fixing device of the offset printing machine has a reasonable structure and effectively improves the problems existing in the prior art, which is conducive to popularization and use.

[0004] However, the above patent has the following shortcomings: when the rubber roller is connected and installed, the connection between the two flanges may become loose as the rubber roller rotates, affecting the stability of the rubber roller; in addition, the rubber roller is supported only by the connection between the flanges, and the strength of the installation of the rubber roller is poor. For this reason, we propose a stable rubber roller frame structure for 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 stable rubber roller frame structure for an offset printing machine.

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

[0007] A stable rubber roller frame structure of an offset printing machine, comprising a support column and a rubber roller, a driving device is arranged on the top of the support column, an output shaft of the driving device is fixedly connected with a fixing flange, a plurality of second mounting holes are provided on the fixing flange, a supporting shaft is arranged on the rubber roller, an end of the supporting shaft is fixedly connected with a mounting flange, a plurality of first mounting holes are provided on the mounting flange, an end face of the mounting flange is fitted with an end face of the fixing flange, a sleeve is sleeved on the outer side of the output shaft of the driving device, an inner wall of the sleeve is connected with the mounting flange and the fixing flange, and a plurality of second mounting holes are provided on the fixing flange. The outer side surfaces of the flanges fit together, and the inner side surface of the sleeve is fixedly connected with a plurality of pins, and the ends of the pins respectively pass through the inner cavities of the second mounting hole and the first mounting hole, wherein the two pins and the side surfaces of the support shaft are provided with fixing holes, and the outer side of the sleeve is provided with two first screw holes, and butterfly screws are threadedly sleeved on the two first screw holes, and the middle part of the butterfly screw passes through the inner cavity of the fixing hole, and the side surface of the butterfly screw fits together with the end surface of the mounting flange, and a supporting mechanism is provided on the support column, and a reinforcing mechanism is provided on the support column.

[0008] As a preferred solution of the utility model, the support mechanism includes a support box fixedly sleeved on the support column, a first motor is fixedly installed on the end surface of the support box, the output shaft of the first motor extends to the inner cavity of the support box and is fixedly connected with a screw, the outer side of the screw is threadedly sleeved with a moving column, one end of the moving column extends to the outside of the support box and is fixedly connected with a support base, a moving groove is opened on the top surface of the support base, a reciprocating screw rod is rotatably connected to the inner cavity of the moving groove, the outer side of the reciprocating screw rod is threadedly sleeved with a moving base, a second motor is fixedly installed on the side of the support base, the output shaft of the second motor is connected to the end of the reciprocating screw rod, two electric hydraulic rods are fixedly installed on the top surface of the moving base, the top ends of the two electric hydraulic rods are fixedly connected with a lower clamping seat, an upper clamping seat is installed on the top of the lower clamping seat, the top surface of the lower clamping seat and the bottom surface of the upper clamping seat are both provided with support grooves, a plurality of support balls are clamped on the inner wall of the support groove, the support shaft passes through the inner cavity of the support groove, and the side surfaces of the support balls are in contact with the side surfaces of the support shaft.

[0009] As a preferred solution of the utility model, the reinforcing mechanism includes a support slide movably sleeved on the support column, the top surface of one end of the support slide is fixedly connected to a support block, and the top surface of the support block is connected to the bottom surface of the support base.

[0010] As a preferred solution of the utility model, a squeeze disk is fixedly sleeved on the outer side of the output shaft of the driving device, a spring is fixedly connected to the side of the squeeze disk, and an end of the spring is connected to the end face of the sleeve.

[0011] As a preferred solution of the utility model, the inner wall of the support box is in contact with the side surface of the movable column, and the inner wall of the movable groove is in contact with the side surface of the movable base.

[0012] As a preferred solution of the utility model, a plurality of second screw holes are opened on the top surface of the support box, a plurality of bolts are sleeved on the first motor, and the bottom ends of the plurality of bolts are respectively threadedly sleeved into the inner cavities of the second screw holes.

[0013] As a preferred solution of the utility model, the outer diameter of the plug is equal to the inner diameter of the second mounting hole and the inner diameter of the first mounting hole.

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

[0015] (1) In the utility model, when the mounting flange and the fixed flange at the end of the support shaft on the rubber roller are fitted together, the elastic force of the spring is used to drive the sleeve to move to the outside of the mounting flange and the fixed flange, and the outside of the mounting flange and the fixed flange are supported by the sleeve. In addition, the pin on the sleeve passes through the second mounting hole and the first mounting hole on the fixed flange and the mounting flange, and the butterfly screw is threadedly installed on the first screw hole on the outside of the sleeve. At the same time, the middle part of the butterfly screw passes through the pin and the butterfly screw on the support shaft, so as to stably connect the mounting flange and the fixed flange, thereby ensuring the stability and firmness of the connection between the mounting flange and the fixed flange.

[0016] (2) In the utility model, the support box, movable column, support base, movable base, electric hydraulic rod and lower clamping seat are used to support the support shaft on the rubber roller, and the support slide and support block are used to enhance the support strength of the support base and the lower clamping seat. The reciprocating screw is driven to rotate by a second motor, and the threaded fit between the reciprocating screw and the movable base is used to drive the lower clamping seat and the upper clamping seat to reciprocate a short distance, thereby changing the support position of the support balls on the lower clamping seat and the upper clamping seat on the support shaft, thereby avoiding wear caused by continuous support at a certain position on the outer side of the support shaft, and having 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 box of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the sleeve of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the lower card seat and the upper card seat of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1. Support column; 2. Rubber roller; 3. Support shaft; 4. Mounting flange; 5. First mounting hole; 6. Driving device; 7. Fixing flange; 8. Second mounting hole; 9. Support mechanism; 10. Strengthening mechanism; 11. Sleeve; 12. Latch; 13. First screw hole; 14. Fixing hole; 15. Butterfly screw; 16. Spring; 17. Extrusion plate; 18. Support box; 19. First motor; 20. Screw; 21. Moving column; 22. Support base; 23. Moving groove; 24. Reciprocating screw; 25. Moving base; 26. Second motor; 27. Electric hydraulic rod; 28. Lower clamping seat; 29. ​​Upper clamping seat; 30. Support groove; 31. Support ball; 32. Second screw hole; 33. Bolt; 34. Support slide; 35. Support block. 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 1-5A stable rubber roller frame structure of an offset printing machine includes a support column 1 and a rubber roller 2. A driving device 6 is arranged on the top of the support column 1. The output shaft of the driving device 6 is fixedly connected with a fixing flange 7. The fixing flange 7 is provided with a plurality of second mounting holes 8. The rubber roller 2 is provided with a support shaft 3. The end of the support shaft 3 is fixedly connected with a mounting flange 4. The mounting flange 4 is provided with a plurality of first mounting holes 5. The end surface of the mounting flange 4 is fitted with the end surface of the fixing flange 7. A sleeve 11 is sleeved on the outer side of the output shaft of the driving device 6. The inner wall of the sleeve 11 and the outer sides of the mounting flange 4 and the fixing flange 7 are connected. The surfaces are fitted together, and a plurality of pins 12 are fixedly connected to the inner surface of the sleeve 11, and the ends of the pins 12 respectively penetrate the inner cavities of the second mounting hole 8 and the first mounting hole 5, wherein the two pins 12 and the side surfaces of the support shaft 3 are provided with fixing holes 14, and the outer side of the sleeve 11 is provided with two first screw holes 13, and the two first screw holes 13 are threadedly sleeved with butterfly screws 15, and the middle part of the butterfly screw 15 penetrates the inner cavity of the fixing hole 14, and the side surface of the butterfly screw 15 is fitted with the end surface of the mounting flange 4, and a supporting mechanism 9 is provided on the support column 1, and a reinforcing mechanism 10 is provided on the support column 1.

[0029] In this embodiment, the outer diameter of the butterfly screw 15 is equal to the inner diameter of the fixing hole 14 , so as to ensure the stability of the butterfly screw 15 in fixing the latch pin 12 and the support shaft 3 .

[0030] For details, please refer to Figures 1 to 5 The support mechanism 9 includes a support box 18 fixedly sleeved on the support column 1, a first motor 19 is fixedly installed on the end surface of the support box 18, an output shaft of the first motor 19 extends to the inner cavity of the support box 18 and is fixedly connected to a screw 20, a moving column 21 is sleeved on the outer thread of the screw 20, one end of the moving column 21 extends to the outside of the support box 18 and is fixedly connected to a support base 22, a moving groove 23 is opened on the top surface of the support base 22, a reciprocating screw rod 24 is rotatably connected to the inner cavity of the moving groove 23, and a moving base 25 is sleeved on the outer thread of the reciprocating screw rod 24. A second motor 26 is fixedly installed on the side of the base 22, and the output shaft of the second motor 26 is connected to the end of the reciprocating screw 24. Two electric hydraulic rods 27 are fixedly installed on the top surface of the movable base 25. The top ends of the two electric hydraulic rods 27 are fixedly connected to a lower clamping seat 28, and an upper clamping seat 29 is installed on the top of the lower clamping seat 28. Support grooves 30 are provided on the top surface of the lower clamping seat 28 and the bottom surface of the upper clamping seat 29. A plurality of support balls 31 are clamped on the inner wall of the support groove 30. The support shaft 3 passes through the inner cavity of the support groove 30, and the side surfaces of the support balls 31 are in contact with the side surfaces of the support shaft 3.

[0031] For details, please refer to Figure 1 and Figure 2The reinforcing mechanism 10 includes a support slide 34 movably sleeved on the support column 1 , a top surface of one end of the support slide 34 is fixedly connected to a support block 35 , and a top surface of the support block 35 is connected to a bottom surface of the support base 22 .

[0032] In this embodiment, the support base 22 is supported by the support slide 34 and the support block 35 to ensure the strength of the electric hydraulic rod 27 and the lower clamping seat 28 above the support base 22 to support the support shaft 3.

[0033] For details, please refer to Figure 1 , Figure 2 and Figure 4 A squeeze disk 17 is fixedly sleeved on the outer side of the output shaft of the driving device 6 , a spring 16 is fixedly connected to the side of the squeeze disk 17 , and the end of the spring 16 is connected to the end surface of the sleeve 11 .

[0034] In this embodiment, the sleeve 11 is pushed by the elastic force of the spring 16 to ensure the stability of the sleeve 11 being sleeved on the outside of the mounting flange 4 and the fixing flange 7 .

[0035] For details, please refer to Figure 3 The inner wall of the support box 18 fits with the side of the moving column 21 , and the inner wall of the moving groove 23 fits with the side of the moving base 25 .

[0036] In this embodiment, the inner wall of the support box 18 is used to limit the movable column 21, so that the movable column 21 can only move along the axial direction of the screw 20, and the inner wall of the movable groove 23 is used to limit the movable base 25, so that the movable base 25 can only move along the axial direction of the reciprocating screw 24.

[0037] For details, please refer to Figure 5 A plurality of second screw holes 32 are formed on the top surface of the support box 18 , and a plurality of bolts 33 are sleeved on the first motor 19 . The bottom ends of the plurality of bolts 33 are respectively threadedly sleeved into the inner cavities of the second screw holes 32 .

[0038] In this embodiment, the upper clamping seat 29 and the lower clamping seat 28 are installed by the cooperation of the bolt 33 and the second screw hole 32 , so that the lower clamping seat 28 and the upper clamping seat 29 are sleeved on the outer side of the support shaft 3 .

[0039] For details, please refer to Figure 2 and Figure 4 The outer diameter of the latch pin 12 is equal to the inner diameter of the second mounting hole 8 and the first mounting hole 5 respectively.

[0040] In this embodiment, the stability of the insertion of the latch pin 12 into the second mounting hole 8 and the first mounting hole 5 is ensured, thereby ensuring the connection stability between the fixing flange 7 and the mounting flange 4 .

[0041] Working principle: When in use, first start the first motor 19 to drive the screw 20 to rotate, and use the threaded fit between the screw 20 and the moving column 21 to drive the support base 22 and the lower clamping seat 28 to move to a suitable position. At this time, place the support shaft 3 at the end of the rubber roller 2 into the support groove 30 inside the lower clamping seat 28, and use the support ball 31 on the lower clamping seat 28 to support the support shaft 3 and the rubber roller 2. In addition, start the electric hydraulic rod 27 to drive the lower clamping seat 28 and the rubber roller 2 to move upward, so that the end of the support shaft 3 fits the end surface of the mounting flange 4 and the fixed flange 7, and then use The sleeve 11 is moved to the outside of the mounting flange 4 and the fixing flange 7 by the elastic force of the spring 16, and the latch 12 on the sleeve 11 penetrates the second mounting hole 8 and the first mounting hole 5 on the fixing flange 7 and the mounting flange 4, and then the butterfly screw 15 is threadedly installed on the first screw hole 13 on the outside of the sleeve 11, and the middle of the butterfly screw 15 penetrates the latch 12 and the butterfly screw 15 on the support shaft 3. At this time, the side surface of the butterfly screw 15 contacts the end surface of the mounting flange 4, thereby stably connecting the mounting flange 4 and the fixing flange 7. Finally, an upper card seat 29 is placed above the lower card seat 28, and the support groove 30 at the bottom of the upper card seat 29 is sleeved on the top of the support shaft 3, so that the support ball 31 on the upper card seat 29 is in contact with the top surface of the support shaft 3, and the lower card seat 28 and the upper card seat 29 are connected by the cooperation between the bolt 33 and the second screw hole 32. When the rubber roller 2 is offset printed, the support shaft 3 on the rubber roller 2 is supported by the support box 18, the moving column 21, the support base 22, the moving base 25, the electric hydraulic rod 27 and the lower card seat 28, and the support slide 34 and The support block 35 enhances the supporting strength of the support base 22 and the lower clamping seat 28. In addition, the second motor 26 is started to drive the reciprocating screw 24 to rotate. The threaded cooperation between the reciprocating screw 24 and the movable base 25 is used to drive the movable base 25 to reciprocate a short distance along the axial direction of the reciprocating screw 24, thereby driving the lower clamping seat 28 and the upper clamping seat 29 to reciprocate a short distance, thereby changing the supporting position of the support ball 31 on the lower clamping seat 28 and the upper clamping seat 29 on the support shaft 3, thereby avoiding wear caused by continuous support at a certain position on the outside of the support shaft 3.

[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 stable rubber roller frame structure for an offset printing press, comprising a support column (1) and a rubber roller (2), characterized in that: A driving device (6) is arranged on the top of the support column (1), the output shaft of the driving device (6) is fixedly connected to a fixing flange (7), a plurality of second mounting holes (8) are provided on the fixing flange (7), a supporting shaft (3) is arranged on the rubber roller (2), the end of the supporting shaft (3) is fixedly connected to a mounting flange (4), a plurality of first mounting holes (5) are provided on the mounting flange (4), the end surface of the mounting flange (4) is in contact with the end surface of the fixing flange (7), a sleeve (11) is sleeved on the outer side of the output shaft of the driving device (6), the inner wall of the sleeve (11) is in contact with the outer side surfaces of the mounting flange (4) and the fixing flange (7), and the sleeve (11) is provided with a plurality of first mounting holes (5) on the rubber roller (2). A plurality of latches (12) are fixedly connected to the inner side surface, and the ends of the latches (12) respectively penetrate the inner cavities of the second mounting hole (8) and the first mounting hole (5), wherein the two latches (12) and the side surfaces of the support shaft (3) are provided with fixing holes (14), and the outer side of the sleeve (11) is provided with two first screw holes (13), and the two first screw holes (13) are threadedly sleeved with butterfly screws (15), and the middle part of the butterfly screw (15) penetrates the inner cavity of the fixing hole (14), and the side surface of the butterfly screw (15) is in contact with the end surface of the mounting flange (4), and the support column (1) is provided with a supporting mechanism (9), and the support column (1) is provided with a reinforcing mechanism (10).

2. The stable rubber roller frame structure of an offset printing press according to claim 1, characterized in that: The support mechanism (9) comprises a support box (18) fixedly sleeved on the support column (1), a first motor (19) being fixedly mounted on the end surface of the support box (18), an output shaft of the first motor (19) extending to the inner cavity of the support box (18) and fixedly connected to a screw rod (20), an outer thread sleeve of the screw rod (20) being threadedly sleeved with a moving column (21), one end of the moving column (21) extending to the outside of the support box (18) and fixedly connected to a support base (22), a moving groove (23) being provided on the top surface of the support base (22), an inner cavity of the moving groove (23) being rotatably connected to a reciprocating screw rod (24), an outer thread sleeve of the reciprocating screw rod (24) being threadedly sleeved with a moving base (25), the support A second motor (26) is fixedly mounted on the side of the support base (22), and the output shaft of the second motor (26) is connected to the end of the reciprocating screw (24). Two electric hydraulic rods (27) are fixedly mounted on the top surface of the movable base (25), and the top ends of the two electric hydraulic rods (27) are fixedly connected to a lower clamping seat (28). An upper clamping seat (29) is mounted on the top of the lower clamping seat (28). A support groove (30) is provided on the top surface of the lower clamping seat (28) and a bottom surface of the upper clamping seat (29). A plurality of support balls (31) are clamped on the inner wall of the support groove (30), and the support shaft (3) passes through the inner cavity of the support groove (30), and the side surface of the support ball (31) is in contact with the side surface of the support shaft (3).

3. The stable rubber roller frame structure of an offset printing press according to claim 2, characterized in that: The reinforcing mechanism (10) comprises a support slide (34) movably sleeved on the support column (1), the top surface of one end of the support slide (34) being fixedly connected to a support block (35), and the top surface of the support block (35) being connected to the bottom surface of the support base (22).

4. The stable rubber roller frame structure of an offset printing press according to claim 1, characterized in that: An extrusion disk (17) is fixedly sleeved on the outer side of the output shaft of the driving device (6), a spring (16) is fixedly connected to the side of the extrusion disk (17), and an end of the spring (16) is connected to the end surface of the sleeve (11).

5. The stable rubber roller frame structure of an offset printing press according to claim 2, characterized in that: The inner wall of the support box (18) is in contact with the side surface of the movable column (21), and the inner wall of the movable groove (23) is in contact with the side surface of the movable base (25).

6. The stable rubber roller frame structure of an offset printing press according to claim 2, characterized in that: The top surface of the support box (18) is provided with a plurality of second screw holes (32), the first motor (19) is sleeved with a plurality of bolts (33), and the bottom ends of the plurality of bolts (33) are respectively threadedly sleeved into the inner cavities of the second screw holes (32).

7. The stable rubber roller frame structure of an offset printing press according to claim 1, characterized in that: The outer diameter of the latch pin (12) is respectively equal to the inner diameter of the second mounting hole (8) and the first mounting hole (5).

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