An adjustable printing roller

Abstract

The utility model discloses an adjustable printing roller, which relates to the technical field of printing machines, and comprises a main printing roller which is horizontally rotatably mounted on the inner side of a mounting frame, wherein the mounting frame comprises a horizontal frame and two vertical frames, wherein the two vertical frames are respectively mounted on two ends of the horizontal frame, and the vertical frames comprise a fixed sleeve, a limit slide column and a threaded rod, and an adjusting component connected with the threaded rod is mounted on the horizontal frame to drive the threaded rod to rotate; through the matching arrangement of the fixed sleeve, the limit slide column, the threaded rod and the adjusting component, an operator can drive the threaded rod to rotate through the adjusting component, and the rotating threaded rod drives the limit slide column to move up or down in the limit slide groove, thereby adjusting the height of the limit slide column, that is, adjusting the distance between the main printing roller and the printing table of the printing machine where it is located, thereby being able to adapt to printing materials of different thicknesses, and compared with the adjustment method of the positioning jack, the adjustment method of the thread matching adopted in the present scheme improves the adjustment accuracy, and can be able to adapt to printing materials of different thicknesses.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to an adjustable printing roller. Background Art

[0002] A printing press is a machine for printing text and images. When in use, the text and images to be printed are first made into printing plates and mounted on the printing press. Ink is then applied to the places with text and images on the printing plates by humans or the printing press. The ink is then directly or indirectly transferred to paper or other substrates, thereby replicating printed products identical to the printing plates. The emergence of printing presses has replaced a large amount of manual labor and saved a lot of time. Two-color printing presses are often used in small processing workshops and factories.

[0003] The printing roller is one of the key components of a printing press. It is usually made of wear-resistant metal materials (such as steel). Its main function is to cooperate with the control rubber roller to smoothly transfer printing media such as ink and fountain solution.

[0004] For example, the two-color printing press with adjustable printing rollers provided by patent application number CN202320040411.8 includes a frame, a motor is fixedly installed on the front side of the frame, and a plurality of conveying rollers are rotatably installed in the frame, one end of one of the conveying rollers extends outside the frame and is fixedly connected to the output shaft of the motor, and a plurality of conveying rollers are provided with conveying belts on the outer surfaces of the plurality of conveying rollers, and the plurality of conveying rollers are connected by conveying belt transmission; by setting a hand wheel, the hand wheel is rotated to drive the bidirectional screw to rotate, and when the bidirectional screw rotates, the two driving plates are driven to move relative to each other, and when the two driving plates move relative to each other, the locking rod is driven to insert into and move away from the fixed hole, thereby realizing the unlocking and locking of the fixed shell movement, and when the fixed shell moves, the printing roller is driven to adjust synchronously to realize adaptive adjustment of printing materials of various thicknesses.

[0005] Based on the above search and in combination with the prior art, it is found that the adjustment accuracy of the printing roller of the two-color printing machine similar to the above disclosed one is low, and it cannot adapt well to printing materials of different thicknesses; in addition, it is difficult to determine the specific height of adjustment when adjusting the printing roller, which brings inconvenience to the operator. Therefore, an adjustable printing roller is proposed to improve the above problems. Utility Model Content

[0006] The purpose of the present application is to provide an adjustable printing roller to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solution: an adjustable printing roller, comprising a main printing roller horizontally rotatably mounted on the inner side of a mounting frame:

[0008] The mounting frame includes a horizontal frame and two vertical frames, and the two vertical frames are respectively mounted on two ends of the horizontal frame;

[0009] The vertical frame includes a fixing sleeve, a limiting sliding column and a threaded rod;

[0010] The fixing sleeve is fixed to the cross frame, the upper end of the fixing sleeve is provided with a limit sliding groove for the limit sliding post to be slidably sleeved, the threaded rod is rotatably installed on the inner side of the fixing sleeve, and the lower end of the limit sliding post is provided with a threaded groove for the threaded rod to be threadedly connected;

[0011] The main printing roller is rotatably installed between two limit slides, a driving motor is installed on the side end of one of the limit slides, the output shaft of the driving motor is coaxially fixed with one end of the main printing roller, and an adjustment assembly connected to a threaded rod is installed on the cross frame to drive the threaded rod to rotate, thereby adjusting the height of the limit slide.

[0012] As a further supplement to this solution, the adjustment assembly includes a rotating shaft, two first bevel gears and two second bevel gears;

[0013] The rotating shaft is rotatably installed on the inner side of the horizontal frame, the two first bevel gears are coaxially fixed on the rotating shaft, the two second bevel gears are coaxially fixed on the bottom ends of the two threaded rods, and the two second bevel gears are meshed with the two first bevel gears one by one.

[0014] As a further supplement to this solution, the side end of the limit sliding column is provided with scale lines.

[0015] As a further supplement to the present solution, a testing mechanism is installed at a side end of a vertical frame away from the driving motor.

[0016] As a further supplement to this solution, the test mechanism includes an auxiliary printing assembly and a placement plate. A fixing frame for installing the auxiliary printing assembly is fixed to the side end of the limiting slide column. The placement plate is horizontally fixed to the side end of the fixing sleeve, and the placement plate is located directly below the auxiliary printing assembly.

[0017] As a further supplement to the present solution, the auxiliary printing assembly includes an auxiliary printing roller, an ink cartridge and a crank;

[0018] The auxiliary printing roller is installed between the limit slide column and the fixed frame in a horizontal rotation manner, and the ink cartridge is installed on the inner top of the fixed frame to provide printing ink for the auxiliary printing roller;

[0019] The crank is coaxially fixed to the end of the auxiliary printing roller away from the main printing roller;

[0020] The placement plate is in the same height as the printing table of the printing press where the main printing roller is located. The auxiliary printing roller is coaxially arranged with the main printing roller, and the diameter of the auxiliary printing roller is equal to the diameter of the main printing roller.

[0021] In summary, the technical effects and advantages of the utility model are:

[0022] 1. In the utility model, through the matching arrangement of the fixed sleeve, the limit slide, the threaded rod and the adjusting assembly, the operator can drive the threaded rod to rotate through the adjusting assembly, and the rotating threaded rod drives the limit slide to move up or down in the limit slide groove, so as to adjust the height of the limit slide, that is, adjust the distance between the main printing roller and the printing table of the printing press where it is located, so as to adapt to printing materials of different thicknesses. Compared with the adjustment method of the positioning socket, the adjustment method of thread matching adopted in this scheme improves the adjustment accuracy and can adapt to printing materials of different thicknesses.

[0023] 2. In the utility model, by installing a test mechanism on the side end of a vertical frame away from the driving motor, the distance between the auxiliary printing roller and the placement plate is always consistent with the distance between the printing roller and the printing table of the printing press where it is located. The operator can place the scraps of printing materials on the placement plate, manually turn the crank to rotate the auxiliary printing roller, and perform a printing test on the surface of the scraps of printing materials. The operator can determine the required printing distance between the main printing roller and the printing table of the printing press where it is located by checking the printing conditions of the scraps of printing materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 Schematic diagram of the overall three-dimensional structure of this embodiment;

[0026] Figure 2 It is a schematic diagram of a partial cutaway structure of a vertical frame in this embodiment;

[0027] Figure 3 It is a schematic diagram of the split structure at the vertical frame in this embodiment.

[0028] In the figure: 1. main printing roller; 2. mounting frame; 21. horizontal frame; 22. vertical frame; 221. fixing sleeve; 2211. limiting slide groove; 222. limiting slide column; 2221. threaded groove; 223. threaded rod; 3. driving motor; 4. fixing frame; 5. auxiliary printing assembly; 51. auxiliary printing roller; 52. ink cartridge; 53. crank; 6. storage plate; 7. adjustment assembly; 71. rotating shaft; 72. first bevel gear; 73. second bevel gear. 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] Example: Reference Figure 1-3 The adjustable printing roller shown comprises a main printing roller 1 which is horizontally rotatably mounted inside a mounting frame 2. The mounting frame 2 comprises a horizontal frame 21 and two vertical frames 22. The two vertical frames 22 are respectively mounted at two ends of the horizontal frame 21.

[0031] Among them, Figure 2-3 As shown, the vertical frame 22 includes a fixed sleeve 221, a limiting slide 222 and a threaded rod 223. The fixed sleeve 221 is fixed to the horizontal frame 21. The upper end of the fixed sleeve 221 is provided with a limiting slide groove 2211 for the limiting slide 222 to slide and sleeve. The threaded rod 223 is rotatably installed on the inner side of the fixed sleeve 221. The lower end of the limiting slide 222 is provided with a threaded groove 2221 for the threaded connection of the threaded rod 223. The main printing roller 1 is rotatably installed between the two limiting slides 222. A driving motor 3 is installed on the side end of one of the limiting slides 222. The output shaft of the driving motor 3 is coaxially fixed with one end of the main printing roller 1. An adjusting component 7 connected with the threaded rod 223 is installed on the horizontal frame 21 to drive the threaded rod 223 to rotate, thereby adjusting the height of the limiting slide 222.

[0032] Regarding the adjustment component 7, specifically, Figure 2 It is shown that the adjustment assembly 7 includes a rotating shaft 71, two first bevel gears 72 and two second bevel gears 73. The rotating shaft 71 is rotatably installed on the inner side of the cross frame 21. The two first bevel gears 72 are coaxially fixed on the rotating shaft 71. The two second bevel gears 73 are coaxially fixed to the bottom ends of the two threaded rods 223, and the two second bevel gears 73 are respectively meshed with the two first bevel gears 72 one by one.

[0033] Based on the matching arrangement of the above structure, the operator can rotate the handle at the end of the rotating shaft 71 so that the synchronously rotating first bevel gear 72 drives the threaded rod 223 to rotate through the second bevel gear 73, and the rotating threaded rod 223 drives the limiting slide 222 to move up or down in the limiting slide groove 2211, thereby adjusting the height of the limiting slide 222, that is, adjusting the distance between the main printing roller 1 and the printing table of the printing press where it is located, so as to adapt to printing materials of different thicknesses. Compared with the adjustment method of the positioning jack, the present scheme adopts the adjustment method of threaded matching to improve the adjustment accuracy and can adapt to printing materials of different thicknesses.

[0034] The side end of the limit slide 222 is provided with scale lines (not shown in the figure), and the operator can know the adjustment distance by checking the scale lines.

[0035] In order to further facilitate the operator to determine the required printing distance between the main printing roller 1 and the printing table of the printing press where it is located, a test mechanism is installed at the side end of a vertical frame 22 away from the drive motor 3. Specifically, the test mechanism includes an auxiliary printing component 5 and a placement plate 6. A fixing frame 4 for installing the auxiliary printing component 5 is fixed to the side end of the limiting slide column 222. The placement plate 6 is horizontally fixed to the side end of the fixing sleeve 221, and the placement plate 6 is located directly below the auxiliary printing component 5.

[0036] More specifically, the auxiliary printing assembly 5 includes an auxiliary printing roller 51, an ink cartridge 52 and a crank 53. The auxiliary printing roller 51 is horizontally rotatably installed between the limiting slide 222 and the fixed frame 4. The ink cartridge 52 is installed at the inner top end of the fixed frame 4 to provide printing ink for the auxiliary printing roller 51. The crank 53 is coaxially fixed to the end of the auxiliary printing roller 51 away from the main printing roller 1. The placement plate 6 is at the same height as the printing table of the printing press where the main printing roller 1 is located. The auxiliary printing roller 51 is coaxially arranged with the main printing roller 1, and the diameter of the auxiliary printing roller 51 is equal to the diameter of the main printing roller 1.

[0037] The distance between the auxiliary printing roller 51 and the placement plate 6 is always consistent with the distance between the printing roller 1 and the printing table of the printing press where it is located. The operator can place the scraps of printing materials on the placement plate 6, manually turn the crank 53 to rotate the auxiliary printing roller 51, and perform a printing test on the surface of the scraps of printing materials. The operator can determine the required printing distance between the main printing roller 1 and the printing table of the printing press where it is located by checking the printing conditions of the scraps of printing materials.

[0038] The working principle of the utility model is as follows: the operator can rotate the handle at the end of the rotating shaft 71 so that the synchronously rotating first bevel gear 72 drives the threaded rod 223 to rotate through the second bevel gear 73, and the rotating threaded rod 223 drives the limiting slide 222 to move up or down in the limiting slide groove 2211, so as to adjust the height of the limiting slide 222, that is, to adjust the distance between the main printing roller 1 and the printing table of the printing press where it is located, so as to adapt to printing materials of different thicknesses; in addition, before formal printing, the operator can place the scraps of printing materials on the storage plate 6, manually rotate the crank 53 to rotate the auxiliary printing roller 51, and perform a printing test on the surface of the scraps of printing materials. The operator can determine the required printing distance between the main printing roller 1 and the printing table of the printing press where it is located by checking the printing conditions of the scraps of printing materials.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An adjustable printing roller, comprising a main printing roller (1) mounted horizontally and rotatably on the inner side of a mounting frame (2), characterized in that: The mounting frame (2) comprises a horizontal frame (21) and two vertical frames (22), wherein the two vertical frames (22) are respectively mounted on two ends of the horizontal frame (21); The vertical frame (22) comprises a fixing sleeve (221), a limiting sliding column (222) and a threaded rod (223); The fixing sleeve (221) is fixed to the cross frame (21); the upper end of the fixing sleeve (221) is provided with a limiting sliding groove (2211) for the limiting sliding column (222) to be slidably sleeved; the threaded rod (223) is rotatably mounted on the inner side of the fixing sleeve (221); the lower end of the limiting sliding column (222) is provided with a threaded groove (2221) for the threaded rod (223) to be threadedly connected; The main printing roller (1) is rotatably mounted between the two limiting slides (222), wherein a driving motor (3) is mounted on the side end of one of the limiting slides (222), and the output shaft of the driving motor (3) is coaxially fixed to one end of the main printing roller (1). An adjusting component (7) connected to the threaded rod (223) is mounted on the cross frame (21) to drive the threaded rod (223) to rotate, thereby adjusting the height of the limiting slide (222).

2. An adjustable printing roller according to claim 1, characterized in that: The adjustment assembly (7) comprises a rotating shaft (71), two first bevel gears (72) and two second bevel gears (73); The rotating shaft (71) is rotatably mounted on the inner side of the cross frame (21); the two first bevel gears (72) are coaxially fixed on the rotating shaft (71); the two second bevel gears (73) are coaxially fixed on the bottom ends of the two threaded rods (223), and the two second bevel gears (73) are respectively meshed with the two first bevel gears (72) in a one-to-one correspondence.

3. The adjustable printing roller according to claim 1, characterized in that: The side end of the limit sliding column (222) is provided with scale marks.

4. The adjustable printing roller according to claim 1, characterized in that: A testing mechanism is installed at a side end of the vertical frame (22) away from the driving motor (3).

5. An adjustable printing roller according to claim 4, characterized in that: The test mechanism comprises an auxiliary printing assembly (5) and a storage plate (6); a fixing frame (4) for mounting the auxiliary printing assembly (5) is fixed to the side end of the limiting slide column (222); the storage plate (6) is horizontally fixed to the side end of the fixing sleeve (221), and the storage plate (6) is located directly below the auxiliary printing assembly (5).

6. An adjustable printing roller according to claim 5, characterized in that: The auxiliary printing assembly (5) comprises an auxiliary printing roller (51), an ink cartridge (52) and a crank (53); The auxiliary printing roller (51) is installed between the limiting slide column (222) and the fixed frame (4) in a horizontally rotatable manner, and the ink cartridge (52) is installed on the inner top end of the fixed frame (4) to provide printing ink for the auxiliary printing roller (51); The crank (53) is coaxially fixed to an end of the auxiliary printing roller (51) away from the main printing roller (1); The placement plate (6) is at the same height as the printing table of the printing machine where the main printing roller (1) is located, the auxiliary printing roller (51) is coaxially arranged with the main printing roller (1), and the diameter of the auxiliary printing roller (51) is equal to the diameter of the main printing roller (1).

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