Printing roller for printing machine

Abstract

The utility model discloses a printing roller for a printing machine, which is erected between two support frames, and is characterized in that the printing roller comprises a roller, a rotating shaft and a radiating pipe. A cylindrical weight reduction space is formed in the roller, and a polygonal groove and an adjusting groove are formed in the two sides of the roller. The rotating shafts are located on the two sides of the roller and installed on the supporting frame, polygonal inserting plates are fixed to the sides, close to the roller, of the rotating shafts, and the polygonal inserting plates are matched with the polygonal grooves to prevent relative displacement between the roller and the rotating shafts. Adjusting blocks are further fixed to the outer sides of the polygonal inserting plates, threaded holes are formed in the adjusting blocks, adjusting bolts penetrate through the threaded holes and abut against the side walls of the adjusting grooves, the axial position of the roller is adjusted, and the installation difficulty of the roller is reduced. The rotating shaft is in a hollow cylinder shape. And a heat dissipation pipe penetrates through the cylindrical weight reduction space and the two rotating shafts, connecting bearings are installed between the heat dissipation pipe and the inner walls of the rotating shafts, cooling of the roller is achieved, and the transfer printing quality of the roller is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing rollers, and in particular relates to a printing roller for a printing machine. Background Art

[0002] The principle of printing equipment is to first make the text or image to be printed into a printing plate, install it on a printing press, and then apply ink to the places with text and images on the printing plate manually or by a printing press, and then transfer it directly or indirectly to paper or other substrates. During the use of the printing equipment, printing rollers are needed for printing.

[0003] The connection between the roller and the rotating shaft of the existing printing roller is circular, which will be worn out after long-term use, causing relative displacement between the rotating shaft and the roller, affecting the printing quality; and the roller will heat up seriously after long-term use, reducing the printing quality; when the roller of the printing roller is installed, it is difficult to adjust its axial position and difficult to install. Utility Model Content

[0004] In view of the above-mentioned shortcomings, the utility model provides a printing roller for a printing machine, which prevents the roller from being displaced relative to the rotating shaft when the roller rotates by opening a polygonal groove in the roller and arranging a multi-deformation plug-in plate matched with the polygonal groove at the end of the rotating shaft. The axial position of the roller relative to the rotating shaft is adjusted by rotating the adjusting bolt, thereby reducing the difficulty of installing the roller. The heat dissipation pipe runs through the roller and the rotating shaft to achieve heat dissipation of the roller, thereby improving the printing quality.

[0005] The utility model is realized through the following technical solutions:

[0006] A printing roller for a printing machine is mounted between two support frames, characterized in that the printing roller includes a roller, a rotating shaft and a heat dissipation pipe. A cylindrical weight-reducing space is provided inside the roller, and polygonal grooves and adjustment grooves connected to the polygonal grooves are provided on both sides of the roller, and the polygonal grooves are connected to the cylindrical weight-reducing space. The rotating shaft is located on both sides of the roller and is installed to the support frame, and a polygonal plug-in plate is fixed on the side of the rotating shaft close to the roller, and the polygonal plug-in plate and the polygonal groove cooperate with each other to prevent relative displacement between the roller and the rotating shaft. An adjustment block is also fixed on the outer side of the polygonal plug-in plate, and a threaded hole is provided in the adjustment block. The adjustment bolt passes through the threaded hole and abuts against the side wall of the adjustment groove to adjust the axial position of the roller and reduce the difficulty of installing the roller. The rotating shaft is in the shape of a hollow cylinder. The heat dissipation pipe passes through the cylindrical weight-reducing space and the two rotating shafts, and a connecting bearing is installed between the heat dissipation pipe and the inner wall of the rotating shaft to cool the roller and improve the transfer quality of the roller.

[0007] Furthermore, the number of sides of the polygonal groove and the polygonal plug-in plate is consistent, the number of adjustment blocks is consistent with the number of polygonal plug-in plates, and the adjustment blocks are evenly distributed along the circumferential direction of the polygonal plug-in plate, thereby enhancing the connection strength between the rotating shaft and the roller.

[0008] Furthermore, the adjustment block is fixed to the middle position of the side wall of the polygonal plug-in board, that is, the adjustment groove is located in the middle position of the side of the polygonal groove, thereby ensuring the basic strength of the roller.

[0009] Furthermore, a chamfer is provided on one side of the adjusting block close to the roller, and a chamfer matching with the adjusting block is provided in the adjusting groove, so as to reduce stress concentration on the side of the adjusting block.

[0010] Furthermore, in the columnar weight-reducing space, the heat dissipation pipe is spirally wound, thereby improving the heat exchange efficiency of the heat dissipation pipe in the columnar weight-reducing space.

[0011] Furthermore, both ends of the heat dissipation pipe are connected to the refrigeration equipment to form a circulation pipeline, thereby achieving heat dissipation for the roller and improving the printing quality of the printing press.

[0012] Furthermore, a driving wheel is installed on the outer side of the rotating shaft, and the driving wheel is connected to the driving motor to realize the driving rotation of the rotating shaft.

[0013] Furthermore, a support bearing is provided between the rotating shaft and the support frame to achieve a supporting connection for the rotating shaft.

[0014] Furthermore, the outer walls of the polygonal plug-in board and the adjustment block are coated with a Teflon coating. The Teflon coating has a low friction coefficient, so that the polygonal plug-in board can be smoothly plugged into the polygonal groove, and the adjustment block can be smoothly plugged into the adjustment groove. And under high load, the Teflon coating has excellent wear resistance, thereby improving the wear resistance of the polygonal plug-in board and the adjustment block.

[0015] Beneficial effects of the utility model:

[0016] 1. By opening a polygonal groove in the roller and arranging a multi-deformable plug-in plate matching the polygonal groove at the end of the rotating shaft, the relative displacement of the roller relative to the rotating shaft is prevented when the roller rotates;

[0017] 2. By rotating the adjusting bolt, the axial position of the roller relative to the rotating shaft is adjusted, which reduces the difficulty of roller installation;

[0018] 3. The heat dissipation pipe runs through the roller and the rotating shaft to dissipate heat from the roller and improve printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A connection diagram for illustrating a schematic embodiment of a printing roller for a printing machine in the utility model;

[0020] Figure 2 A schematic structural diagram for illustrating a schematic implementation of a printing roller for a printing machine in the utility model;

[0021] Figure 3 To illustrate Figure 2 A partial enlarged schematic diagram in the middle;

[0022] Figure 4 A cross-sectional view for illustrating a schematic embodiment of a printing roller for a printing press in the utility model;

[0023] Figure 5 To illustrate Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0024] Figure 6 A cross-sectional view for illustrating another exemplary embodiment of a printing roller for a printing press in the utility model;

[0025] Figure 7 A schematic diagram for illustrating an installation of a schematic implementation of a rotating shaft of a printing roller for a printing press in the utility model;

[0026] Figure 8 A structural schematic diagram for illustrating a schematic implementation of a roller of a printing roller for a printing machine in the utility model.

[0027] List of parts and reference numerals:

[0028] 1. Support frame; 2. Roller; 21. Columnar weight reduction space; 22. Polygonal groove; 23. Adjustment slot; 3. Rotating shaft; 31. Polygonal plug-in board; 32. Adjustment block; 321. Chamfered corners; 33. Adjustment bolt; 34. Driving wheel; 4. Heat dissipation pipe; 41. Connecting bearing. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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.

[0030] It should be noted that the directional terms such as left, right, up, down, front and back in the embodiments of the present invention are merely relative concepts or are based on the normal use state of the product, that is, the direction of movement of the product, and should not be considered as limiting.

[0031] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of the present invention are not only changes in position, but also include movements such as rotation and rolling where there is no relative change in position but a change in state.

[0032] Finally, it should be noted that when a component is referred to as being "located" or "set on" another component, it can be on the other component or there can be an intermediate component at the same time. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be an intermediate component at the same time.

[0033] like Figures 1 to 8 The printing roller for a printing machine is shown, which is mounted between two support frames 1, and is characterized in that the printing roller includes a roller 2, a rotating shaft 3 and a heat dissipation pipe 4. The roller 2 has a cylindrical weight-reducing space 21, and polygonal grooves 22 and adjustment grooves 23 connected to the polygonal grooves 22 are provided on both sides of the roller 2, and the polygonal grooves 22 are connected to the cylindrical weight-reducing space 21. The rotating shaft 3 is located on both sides of the roller 2 and is installed on the support frame 1. A polygonal plug-in plate 31 is fixed on the side of the rotating shaft 3 close to the roller 2, and the polygonal plug-in plate 31 cooperates with the polygonal groove 22 to prevent relative displacement between the roller 2 and the rotating shaft 3. An adjustment block 32 is also fixed on the outside of the polygonal plug-in plate 31, and a threaded hole is provided in the adjustment block 32. The adjustment bolt 33 passes through the threaded hole and abuts against the side wall of the adjustment groove 23 to adjust the axial position of the roller 2 and reduce the difficulty of installing the roller 2. The rotating shaft 3 is in the shape of a hollow cylinder. The heat dissipation pipe 4 passes through the cylindrical weight-reducing space 21 and the two rotating shafts 3 , and a connecting bearing 41 is installed between the heat dissipation pipe 4 and the inner wall of the rotating shaft 3 to achieve cooling of the roller 2 and improve the transfer quality of the roller 2 .

[0034] In one embodiment, first, the heat dissipation tube 4 is inserted into the roller 2, and the rotating shaft 3 is installed on both sides of the roller 2, and the heat dissipation tube 4 is inserted into the inner side of the rotating shaft 3. When the rotating shaft 3 is inserted into the roller 2, the polygonal plug-in plate 31 on the rotating shaft 3 is inserted into the polygonal groove 22 of the roller 2 to achieve the installation of the rotating shaft 3 and the roller 2. Then, the roller 2 is mounted on the support frame 1 through the rotating shaft 3 to complete the connection between the rotating shaft 3 and the support frame 1. When installing the roller 2, the axial position reference requirement of the roller 2 is low, which greatly reduces the time for determining the axial position of the roller 2. By screwing the adjusting bolts 33 on both sides of the roller 2, the axial position of the roller 2 can be accurately adjusted, and the adjustment is convenient and quick, which is convenient for determining the axial position of the roller 2. Finally, the flowing medium is poured into the heat dissipation tube 4 to achieve heat dissipation of the roller body, thereby improving the printing quality of the printing press.

[0035] Preferably, the polygonal groove 22 and the polygonal plug-in plate 31 have the same number of sides, the number of adjustment blocks 32 is consistent with the number of polygonal plug-in plates 31, and the adjustment blocks 32 are evenly distributed along the circumferential direction of the polygonal plug-in plates 31, thereby enhancing the connection strength between the rotating shaft 3 and the roller 2.

[0036] In one embodiment, if Figures 1 to 8 As shown, the polygonal groove 22 is a hexagonal groove, the polygonal plug-in board 31 is a hexagonal plug-in board, and each hexagonal plug-in board is provided with 6 adjustment blocks 32 .

[0037] Preferably, the adjustment block 32 is fixed to the middle position of the side wall of the polygonal plug-in plate 31 , that is, the adjustment slot 23 is located in the middle position of the side of the polygonal groove 22 , to ensure the basic strength of the roller 2 .

[0038] In one embodiment, when the polygonal plug-in plate 31 is inserted into the polygonal groove 22 , the adjustment block 32 is simultaneously inserted into the adjustment groove 23 , and the adjustment block 32 cooperates with the adjustment groove 23 to also limit the roller 2 .

[0039] Preferably, a chamfer 321 is provided on one side of the adjustment block 32 close to the roller 2 , and a chamfer 321 cooperating with the adjustment block 32 is provided in the adjustment groove 23 to reduce stress concentration on the side of the adjustment block 32 .

[0040] Preferably, in the columnar weight-reducing space 21 , the heat dissipation pipe 4 is spirally wound to improve the heat exchange efficiency of the heat dissipation pipe 4 in the columnar weight-reducing space 21 .

[0041] In one embodiment, if Figure 6 As shown, the heat dissipation pipe 4 is spirally shaped in the cylindrical weight-reducing space 21, which effectively increases the surface area of ​​the heat dissipation pipe 4 in the cylindrical weight-reducing space 21, improves the heat exchange efficiency between the heat dissipation pipe 4 and the cylindrical weight-reducing space 21, and facilitates the cooling of the roller 2 to avoid the high-speed rotation of the roller 2 to generate heat and affect the printing quality.

[0042] Preferably, both ends of the heat dissipation pipe 4 are connected to a refrigeration device to form a circulation pipeline, thereby achieving heat dissipation for the roller 2 and improving the printing quality of the printing press.

[0043] In one embodiment, the refrigeration device is an air cooler, which blows cold air into the heat dissipation pipe 4 to cool the roller 2 through the heat dissipation pipe 4 .

[0044] In one embodiment, the refrigeration device is a liquid cooler, which delivers refrigeration liquid into the heat dissipation pipe 4 so that the heat dissipation pipe 4 cools the roller 2 .

[0045] Preferably, a driving wheel 34 is also installed on the outer side of the rotating shaft 3 , and the driving wheel 34 is connected to the driving motor to realize the driving rotation of the rotating shaft 3 .

[0046] Preferably, a support bearing is provided between the rotating shaft 3 and the support frame 1 to achieve a supporting connection for the rotating shaft 3 .

[0047] Preferably, the outer walls of the polygonal plug-in board 31 and the adjusting block 32 are coated with a Teflon coating. The Teflon coating has a low friction coefficient, so that the polygonal plug-in board 31 can be smoothly plugged into the polygonal groove 22, and the adjusting block 32 can be smoothly plugged into the adjusting groove 23. Moreover, under high load, the Teflon coating has excellent wear resistance, thereby improving the wear resistance of the polygonal plug-in board 31 and the adjusting block 32.

[0048] When the printing roller for the printing press is used, a polygonal groove 22 is provided in the roller 2, and a multi-deformable plug-in plate matching the polygonal groove 22 is provided at the end of the rotating shaft 3 to prevent the roller 2 from being displaced relative to the rotating shaft 3 when the roller 2 rotates. The axial position of the roller 2 relative to the rotating shaft 3 is adjusted by rotating the adjusting bolt 33, thereby reducing the difficulty of installing the roller 2. The heat dissipation pipe 4 runs through the roller 2 and the rotating shaft 3 to dissipate heat for the roller 2, thereby improving the printing quality.

[0049] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A printing roller for a printing press, mounted between two support frames, characterized in that: The printing roller comprises: A roller, wherein the roller has a cylindrical weight-reducing space, and polygonal grooves and adjustment grooves connected to the polygonal grooves are opened on both sides of the roller, and the polygonal grooves are connected to the cylindrical weight-reducing space; A rotating shaft, the rotating shaft is located on both sides of the roller and is installed to the support frame, a polygonal plug-in plate is fixed on one side of the rotating shaft close to the roller, the polygonal plug-in plate cooperates with the polygonal groove, an adjustment block is also fixed on the outer side of the polygonal plug-in plate, a threaded hole is opened in the adjustment block, an adjustment bolt passes through the threaded hole and abuts against the side wall of the adjustment groove, and the rotating shaft is in the shape of a hollow cylinder; A heat dissipation pipe runs through the cylindrical weight-reducing space and the two rotating shafts, and a connecting bearing is installed between the heat dissipation pipe and the inner wall of the rotating shaft.

2. A printing roller for a printing machine according to claim 1, characterized in that: The polygonal groove and the polygonal plug-in board have the same number of sides, the number of the adjustment blocks is consistent with the number of the polygonal plug-in boards, and the adjustment blocks are evenly distributed along the circumferential direction of the polygonal plug-in board.

3. A printing roller for a printing machine according to claim 2, characterized in that: The adjusting block is fixed to the middle position of the side wall of the polygonal plug board.

4. A printing roller for a printing machine according to claim 1, characterized in that: A chamfered corner is arranged on one side of the adjusting block close to the roller, and a chamfered corner cooperating with the adjusting block is arranged in the adjusting groove.

5. A printing roller for a printing press according to claim 1, characterized in that: In the cylindrical weight-reducing space, the heat dissipation pipe is spirally wound.

6. A printing roller for a printing press according to claim 1, characterized in that: Both ends of the heat dissipation pipe are connected to the refrigeration equipment to form a circulation pipeline.

7. A printing roller for a printing press according to claim 1, characterized in that: A driving wheel is also installed on the outer side of the rotating shaft, and the driving wheel is connected to the driving motor.

8. The printing roller for a printing machine according to claim 1, characterized in that: A support bearing is provided between the rotating shaft and the support frame.

9. A printing roller for a printing press according to claim 1, characterized in that: The outer walls of the polygonal plug-in board and the adjusting block are both coated with Teflon coating.

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