Printing roller for printing

Abstract

The utility model relates to the technical field of printing rollers, and provides a printing roller for printing, which comprises a fixed shaft, a printing roller component is arranged on the outer side of the fixed shaft, the printing roller component comprises an inner roller, the inner roller is fixedly connected to the middle of the fixed shaft, and a first outer roller and a second outer roller are sleeved on the fixed shaft. The first outer roller and the second outer roller are both of a semicircular structure and spliced into a complete circular structure, butt joint pieces are fixedly connected to the two ends of the inner side of the first outer roller and the two ends of the inner side of the second outer roller, and positioning pieces in sliding fit with the corresponding butt joint pieces are fixedly connected to the two ends of the fixing shaft. The paper printing device can be adjusted according to the breadth or the printing area of paper, so that printing of paper with different breadths or printing areas is met, and the printing universality is greatly improved.

Description

Technical Field

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

[0002] A machine for printing text and images. Modern printing presses generally consist of mechanisms such as plate loading, inking, embossing, and paper feeding (including folding). Its working principle is: the text and image to be printed are first made into a printing plate and mounted on the printing press. Then, ink is applied to the areas of the plate where the text and image are located, either manually or by the printing machine. The ink is then directly or indirectly transferred to paper or other printing materials, thereby reproducing a printed product identical to the printing plate.

[0003] After searching, the Chinese patent publication number CN204196439U disclosed "a printing guide roller, comprising a roller and a printing guide roller body mounted on the roller, wherein the two ends of the printing guide roller body along the axial direction are also provided with roller pillows, the outer peripheral surface of the printing guide roller body is pasted with Velcro, the male surface of the Velcro faces outward and contacts the printing paper, the axial length of the Velcro is greater than or equal to the length of the printing guide roller body, and the outer peripheral surface of the printing guide roller body is pasted with two or more layers of the Velcro".

[0004] This patent attaches Velcro to the outer peripheral surface of the printing guide roller body to effectively reduce the contact area between the printing guide roller body and the printing paper, thereby reducing the chance of the printing paper pattern being dragged dirty due to the friction between the printing guide roller body and the printing paper; however, during the use of the printing roller, due to the large number of printed paper types, when it is necessary to replace paper of different widths or printing areas, the entire printing roller needs to be replaced again, which consumes too much time and reduces work efficiency. In view of this, the utility model proposes a printing roller for printing. Utility Model Content

[0005] The utility model provides a printing roller for printing, which solves the problem in the prior art that the printing roller cannot adapt to the printing of papers with different widths or printing areas.

[0006] The technical solution of the utility model is as follows: A printing roller for printing, comprising a fixed shaft, a printing roller assembly is arranged on the outside of the fixed shaft, the printing roller assembly comprises an inner roller, the inner roller is fixedly connected to the middle part of the fixed shaft, a first outer roller and a second outer roller are sleeved on the fixed shaft, the first outer roller and the second outer roller are both semicircular structures, and the two are spliced ​​into a complete circular structure, the inner ends of the first outer roller and the second outer roller are fixedly connected to docking parts, and the two ends of the fixed shaft are fixedly connected to positioning parts that slide with the corresponding docking parts.

[0007] Preferably, the first outer roller and the second outer roller are both concentrically arranged with the inner roller, and the inner diameters of the first outer roller and the second outer roller are larger than the diameter of the inner roller.

[0008] Preferably, both ends of the first outer roller and the second outer roller are provided with a slot that is slidably engaged with the fixed shaft, and both of the slots are semicircular structures.

[0009] Preferably, the docking member includes a fixed plate, one end of the fixed plate is fixedly connected to the inner walls of the corresponding first outer roller and the second outer roller, the inner side of the fixed plate is fixedly connected to a docking block, one side of the docking block is fixedly connected to an insertion rod, and the end of the insertion rod away from the docking block is fixedly connected to a clamping block arranged perpendicular to the insertion rod.

[0010] Preferably, the positioning member includes a fixing sleeve, the fixing sleeve is fixedly connected to the outside of the fixed shaft, and both ends of the fixing sleeve are provided with docking grooves that are slidably matched with the docking block.

[0011] Preferably, the fixing plate is an arc-shaped structure, and the arc surface area of ​​the fixing plate is larger than the opening area of ​​the docking groove.

[0012] Preferably, the positioning member also includes a rotating shaft passing through the side wall of the fixed shaft, the rotating shaft is rotatably connected to the fixed shaft, and the rotating shaft and the fixed shaft are concentrically arranged, one end of the rotating shaft is fixedly connected to a rotating plate, both ends of the rotating plate are fixedly connected to limiting rods, the two limiting rods respectively interfere with two blocks, and the other end of the rotating shaft is fixedly connected to a rotating cap.

[0013] Preferably, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is welded to the rotating plate, and the other end of the torsion spring is welded to the inner wall of the fixed shaft.

[0014] The working principle and beneficial effects of the utility model are as follows: when it is necessary to increase the diameter of the printing roller assembly, the first outer roller and the second outer roller are sleeved on the fixed shaft and the first outer roller and the second outer roller are spliced ​​into a complete circular structure, and the positioning member and the docking member are slidably matched to achieve the fixation of the first outer roller and the second outer roller; when it is necessary to reduce the diameter of the printing roller assembly, the first outer roller and the second outer roller are removed to allow the inner roller to perform printing work. This structure can be adjusted according to the width or printing area of ​​the paper, thereby meeting the printing needs of papers with different widths or printing areas, greatly improving the versatility of printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a schematic structural diagram of a printing roller for printing according to the present invention;

[0017] Figure 2 This is a schematic structural diagram of the printing roller assembly of the present invention;

[0018] Figure 3 This is a structural diagram of the docking piece of the present utility model;

[0019] Figure 4 This is a schematic structural diagram of the positioning member of the present utility model;

[0020] Figure 5 It is a schematic diagram of the matching structure of the docking piece and the positioning piece of the present utility model.

[0021] In the figure: 1. fixed shaft; 2. printing roller assembly; 21. first outer roller; 22. second outer roller; 23. inner roller; 24. docking piece; 241. fixed plate; 242. docking block; 243. plug-in rod; 244. clamping block; 25. positioning piece; 251. fixed sleeve; 252. docking groove; 253. rotating shaft; 254. rotating plate; 255. limiting rod; 256. torsion spring; 257. rotating cap. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1 to 5 As shown, this embodiment proposes a printing roller for printing, including a fixed shaft 1, a printing roller assembly 2 is provided on the outside of the fixed shaft 1, and the printing roller assembly 2 includes an inner roller 23, the inner roller 23 is fixedly connected to the middle part of the fixed shaft 1, and a first outer roller 21 and a second outer roller 22 are sleeved on the fixed shaft 1, the first outer roller 21 and the second outer roller 22 are both semicircular structures, and the two are spliced ​​into a complete circular structure, and both ends of the first outer roller 21 and the second outer roller 22 are provided with a card groove that slides with the fixed shaft 1, and the two card grooves are both semicircular structures. The first outer roller 21 and the second outer roller 22 are both concentrically arranged with the inner roller 23, and the inner diameters of the first outer roller 21 and the second outer roller 22 are larger than the diameter of the inner roller 23, and the two ends of the inner sides of the first outer roller 21 and the second outer roller 22 are fixedly connected with docking parts 24, and both ends of the fixed shaft 1 are fixedly connected with positioning parts 25 that slide with the corresponding docking parts 24.

[0024] When it is necessary to increase the diameter of the printing roller assembly 2, the first outer roller 21 and the second outer roller 22 are sleeved on the fixed shaft 1 and the first outer roller 21 and the second outer roller 22 are spliced ​​into a complete circular structure. At the same time, the positioning member 25 and the docking member 24 are slidably matched to achieve the fixation of the first outer roller 21 and the second outer roller 22. When it is necessary to reduce the diameter of the printing roller assembly 2, the first outer roller 21 and the second outer roller 22 are removed to allow the inner roller 23 to perform printing work. This structure can be adjusted according to the width or printing area of ​​the paper, thereby meeting the printing needs of papers with different widths or printing areas, greatly improving the versatility of printing.

[0025] Furthermore, the docking member 24 includes a fixed plate 241, one end of which is fixedly connected to the inner walls of the corresponding first outer roller 21 and the second outer roller 22, and the inner side of the fixed plate 241 is fixedly connected to a docking block 242, one side of the docking block 242 is fixedly connected to an insertion rod 243, and the end of the insertion rod 243 away from the docking block 242 is fixedly connected to a clamping block 244 arranged perpendicular to the insertion rod 243.

[0026] Furthermore, the positioning member 25 includes a fixing sleeve 251, which is fixedly connected to the outside of the fixed shaft 1, and both ends of the fixing sleeve 251 are provided with a docking groove 252 that slides with the docking block 242. The positioning member 25 includes a fixing sleeve 251, which is fixedly connected to the outside of the fixed shaft 1, and both ends of the fixing sleeve 251 are provided with a docking groove 252 that slides with the docking block 242. Both ends of the fixed shaft 1 are rotatably connected to a fixing sleeve 251 that penetrates the side wall of the fixed shaft 1. The rotating shaft 253 is concentrically arranged with the fixed shaft 1. One end of the rotating shaft 253 is fixedly connected to the rotating plate 254. Both ends of the rotating plate 254 are fixedly connected to the limiting rods 255. The two limiting rods 255 respectively contact the two blocks 244. The other end of the rotating shaft 253 is fixedly connected to the rotating cap 257. A torsion spring 256 is sleeved on the rotating shaft 253. One end of the torsion spring 256 is welded to the rotating plate 254, and the other end of the torsion spring 256 is welded to the inner wall of the fixed shaft 1.

[0027] Working principle: When the printing diameter needs to be increased, the rotating cap 257 is rotated to rotate the rotating shaft 253, so that the rotating plate 254 drives the two limiting rods 255 to rotate circumferentially, so that the limiting rods 255 are completely staggered with the docking groove 252. At this time, the torsion spring 256 is contracted to accumulate potential energy, and then the first outer roller 21 and the second outer roller 22 are sleeved on the fixed shaft 1 and the first outer roller 21 and the second outer roller 22 are spliced ​​into a complete circular structure. At the same time, the docking block 242 cooperates with the corresponding docking groove 252, and the insertion rod 243 is fully inserted into the fixed sleeve 251. Then, the rotating cap 257 is loosened to release the potential energy of the torsion spring 256, so that the rotating shaft 253 drives the rotating plate 254 to rotate in the opposite direction, thereby making the two limiting rods 255 rotate in the opposite direction and conflict with the corresponding blocking block 244, which can prevent the docking block 242 from disengaging from the corresponding docking groove 252, thereby making the first outer roller 21 and the second outer roller 22 stably installed on the fixed shaft 1;

[0028] When the printing diameter needs to be reduced, the rotating cap 257 is rotated to rotate the rotating shaft 253, so that the rotating plate 254 drives the two limit rods 255 to rotate circumferentially, so that the limit rods 255 are completely disengaged from the block 244. In this way, the first outer roller 21 and the second outer roller 22 can be removed, so that the inner roller 23 can perform printing work to achieve a reduction in the printing diameter. This structure can be adjusted according to the width or printing area of ​​the paper, so as to meet the printing needs of papers with different widths or printing areas, greatly improving the versatility of printing.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A printing roller for printing, comprising a fixed shaft (1), characterized in that: A printing roller assembly (2) is provided on the outer side of the fixed shaft (1), and the printing roller assembly (2) includes an inner roller (23), and the inner roller (23) is fixedly connected to the middle part of the fixed shaft (1). A first outer roller (21) and a second outer roller (22) are sleeved on the fixed shaft (1), and the first outer roller (21) and the second outer roller (22) are both semicircular structures, and the two are spliced ​​into a complete circular structure. The inner ends of the first outer roller (21) and the second outer roller (22) are fixedly connected to docking pieces (24), and the two ends of the fixed shaft (1) are fixedly connected to positioning pieces (25) that are slidably matched with the corresponding docking pieces (24).

2. A printing roller for printing according to claim 1, characterized in that: The first outer roller (21) and the second outer roller (22) are both arranged concentrically with the inner roller (23), and the inner diameters of the first outer roller (21) and the second outer roller (22) are larger than the diameter of the inner roller (23).

3. A printing roller for printing according to claim 1, characterized in that: Both ends of the first outer roller (21) and the second outer roller (22) are provided with a slot that is slidably engaged with the fixed shaft (1), and both slots are semicircular structures.

4. A printing roller for printing according to claim 1, characterized in that: The docking member (24) comprises a fixed plate (241), one end of the fixed plate (241) is fixedly connected to the inner wall of the corresponding first outer roller (21) and the second outer roller (22), the inner side of the fixed plate (241) is fixedly connected to a docking block (242), one side of the docking block (242) is fixedly connected to an insertion rod (243), and one end of the insertion rod (243) away from the docking block (242) is fixedly connected to a clamping block (244) arranged perpendicular to the insertion rod (243).

5. A printing roller for printing according to claim 4, characterized in that: The positioning member (25) comprises a fixing sleeve (251), the fixing sleeve (251) being fixedly connected to the outside of the fixed shaft (1), and both ends of the fixing sleeve (251) are provided with docking grooves (252) for slidingly engaging with the docking block (242).

6. A printing roller for printing according to claim 5, characterized in that: The fixing plate (241) is an arc-shaped structure, and the arc surface area of ​​the fixing plate (241) is larger than the opening area of ​​the docking groove (252).

7. The printing roller for printing according to claim 5, characterized in that: The positioning member (25) further comprises a rotating shaft (253) penetrating the side wall of the fixed shaft (1), the rotating shaft (253) being rotatably connected to the fixed shaft (1) and being concentrically arranged with the fixed shaft (1), one end of the rotating shaft (253) being fixedly connected to a rotating plate (254), both ends of the rotating plate (254) being fixedly connected to limiting rods (255), the two limiting rods (255) respectively abutting against the two clamping blocks (244), and the other end of the rotating shaft (253) being fixedly connected to a rotating cap (257).

8. The printing roller for printing according to claim 7, characterized in that: A torsion spring (256) is sleeved on the rotating shaft (253), one end of the torsion spring (256) is welded to the rotating plate (254), and the other end of the torsion spring (256) is welded to the inner wall of the fixed shaft (1).

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