Powder removing mechanism of offset press

Abstract

The utility model discloses a powder removing mechanism of an offset press, which comprises a fixing mechanism, a removing mechanism and a recycling mechanism, the removing mechanism and the recycling mechanism are assembled at the bottom of the fixing mechanism and are distributed left and right, the fixing mechanism comprises a support frame, and a fixing plate is fixedly mounted on the back of the support frame. According to the powder removing mechanism of the offset press, through cooperation of the first closing cover, the second closing cover and the cleaning brush roller, the printing roller of the offset press can be closed through the first closing cover and the second closing cover, and the closed printing roller can be subjected to cleaning and powder removing treatment through the cleaning brush roller; therefore, residual powdered ink on the printing roller can be removed and collected before falling, the situation that the powdered ink on the printing roller falls on the surface of a printed matter and pollutes the surface of the printed matter and the quality is not high when the powdered ink on the printed matter is removed in the later period is avoided, and the printing quality during operation of the offset press is improved through the powder removing mechanism. And the stability during long-time operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of offset printing machines, in particular to a powder removal mechanism for an offset printing machine. Background Art

[0002] An offset printing 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 paper by the rubber cylinder. Toner will remain on the printing roller during operation. When the offset printing press is in operation, toner will affect the subsequent printing quality. Therefore, it is necessary to regularly remove toner from the printing roller. The "offset printing press powder removal mechanism" disclosed in the publication number "CN 217514775 U" has solved the technical drawbacks of easy accumulation and incomplete powder removal. However, in actual use, powder removal mechanisms with similar structures still have many defects. For example, most of them are cleaned and powder removed after toner falls onto the printing surface. When the toner on the printing surface is removed, the surface is contaminated, and the quality of cleaning and powder removal is limited, and residues may remain. Therefore, we have designed a powder removal mechanism for an offset printing press to solve the above problems. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a powder removal mechanism for an offset printing press, which solves the problem that only the powder that has contaminated the surface of the printed matter can be removed and the quality of the removal is not high.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a powder removal mechanism of an offset printing machine, including a fixing mechanism and a cleaning mechanism and a recovery mechanism installed at the bottom of the fixing mechanism and distributed on the left and right sides, the fixing mechanism including a support frame, a fixing plate fixedly installed on the back of the support frame, a double-headed motor fixedly installed at the central position of the bottom of the fixing mechanism, and a threaded rod fixedly installed at the output end of the double-headed motor;

[0005] The cleaning mechanism includes a first closed cover, and the recovery mechanism includes a second closed cover. An adjustment plate threadedly connected to the threaded rod is fixedly installed at the central position of the top of the first closed cover and the second closed cover. A powder removal cover is fixedly installed on the top of one side of the first closed cover, and a cleaning motor is fixedly installed on the front of the powder removal cover. A cleaning brush roller is fixedly installed on the output end of the cleaning motor through the powder removal cover. A dust exhaust cover is fixedly installed on the top of the other side of the first closed cover, and a filter element is fixedly installed on the top of the inside of the dust exhaust cover. A collecting cover is fixedly installed on the bottom of the first closed cover, and an exhaust pipe is fixedly installed on the front side of the bottom of the collecting cover.

[0006] Preferably, a slide bar is fixedly mounted on the front and rear sides of the bottom of the support frame via a mounting plate, and a slide plate used in conjunction with the slide bar is fixedly mounted on the front and rear sides of the tops of the first and second closed covers.

[0007] Preferably, a discharge motor is fixedly mounted on the front side of the collecting cover, and a discharge reel is fixedly mounted on the output end of the discharge motor passing through the collecting cover.

[0008] Preferably, an assembly rod is fixedly mounted on the front side of the first closed cover, and an assembly set used in conjunction with the assembly rod is fixedly mounted on the front side of the second closed cover.

[0009] Preferably, closed rings are fixedly mounted on the inner sides of the backs of the first closed cover and the second closed cover.

[0010] Preferably, a dust extraction motor is fixedly mounted on the front of the dust exhaust hood, and a dust extraction fan is fixedly mounted on the output end of the dust exhaust motor passing through the dust exhaust hood.

[0011] Beneficial Effects

[0012] The utility model provides a powder removal mechanism for an offset printing machine. Compared with the prior art, it has the following beneficial effects:

[0013] The powder removal mechanism of the offset printing machine cooperates with a first closing cover, a second closing cover and a cleaning brush roller. The first closing cover and the second closing cover can close the printing roller of the offset printing machine, and the cleaning brush roller can be used to clean and remove powder from the closed printing roller, so that the residual toner on the printing roller can be cleared and collected before it falls off, thereby avoiding the toner on the printing roller from falling onto the surface of the printed matter to cause contamination thereof and the situation of low quality when the toner on the printed matter is removed later. The powder removal mechanism improves the printing quality during the operation of the offset printing machine and improves the stability during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the first closed cover structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the second closed cover of the utility model;

[0017] Figure 4 It is a schematic cross-sectional structure diagram of a second closed cover of the utility model;

[0018] Figure 5 It is a schematic diagram of the closed structure of the utility model;

[0019] In the figure: 1. fixing mechanism; 101. support frame; 102. fixing plate; 103. mounting plate; 104. sliding rod; 2. cleaning mechanism; 201. first closed cover; 202. powder removal cover; 3. recovery mechanism; 301. second closed cover; 302. collecting cover; 303. discharge pipe; 304. dust exhaust cover; 305. filter element; 4. cleaning motor; 401. cleaning brush roller; 5. closed ring; 6. adjusting plate; 601. sliding plate; 7. assembly rod; 701. assembly set; 8. discharge motor; 801. discharge reel; 9. dust extraction motor; 901. dust extraction fan; 10. double-headed motor; 1001. threaded rod. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-5 The utility model provides a technical solution: a powder removal mechanism of an offset printing machine, comprising a fixing mechanism 1 and a cleaning mechanism 2 and a recovery mechanism 3 which are arranged on the bottom of the fixing mechanism 1 and are distributed on the left and right sides, the fixing mechanism 1 comprises a support frame 101, a fixing plate 102 is fixedly installed on the back of the support frame 101, a double-headed motor 10 is fixedly installed at the central position of the bottom of the fixing mechanism 1, and a threaded rod 1001 is fixedly installed at the output end of the double-headed motor 10, the cleaning mechanism 2 comprises a first closed cover 201, the recovery mechanism 3 comprises a second closed cover 301, and the tops of the first closed cover 201 and the second closed cover 301 are fixedly installed with a threaded rod 1001. An adjustment plate 6 threadedly connected to the threaded rod 1001 is fixedly installed at the central position, a powder removal cover 202 is fixedly installed on the upper side of one side of the first closed cover 201, a cleaning motor 4 is fixedly installed on the front side of the powder removal cover 202, and a cleaning brush roller 401 is fixedly installed on the output end of the cleaning motor 4 through the powder removal cover 202, a dust exhaust cover 304 is fixedly installed on the upper side of the other side of the first closed cover 201, a filter element 305 is fixedly installed on the upper side of the dust exhaust cover 304, a collecting cover 302 is fixedly installed on the bottom of the first closed cover 201, and a discharge pipe 303 is fixedly installed on the front side of the bottom of the collecting cover 302.

[0022] Based on the above-mentioned structural setting, the powder removal mechanism of the offset printing machine is composed of a fixing mechanism 1, a cleaning mechanism 2 and a recycling mechanism 3, wherein the fixing mechanism 1 can be installed and fixed when the powder removal mechanism is in operation to ensure the stability of the powder removal mechanism in operation, the cleaning mechanism 2 can clean and remove the residual toner on the printing roller to ensure the surface cleanliness of the printing roller and the stability of printing during long-term operation, and the recycling mechanism 3 can recycle the toner after removal, so as to facilitate the centralized treatment of the toner after removal by the staff. Specifically, during the operation, the fixing plate 102 can fix the support frame 101 on the offset printing machine, and the powder removal mechanism can be supported and installed through the support frame 101 when it is in operation, the threaded rod 1001 installed on the output end of the double-headed motor 10 is threadedly connected with the adjustment plate 6 at the top of the first closed cover 201 and the second closed cover 301, and the first closed cover 201 and the second closed cover 301 can be adjusted by driving the threaded rod 1001 to rotate by the double-headed motor 10 Closing and opening, when the first closing cover 201 and the second closing cover 301 are closed, the printing roller of the offset printing machine can be covered. When the first closing cover 201 and the second closing cover 301 are closed to the printing roller, the cleaning motor 4 drives the cleaning brush roller 401 inside the powder removal cover 202 to rotate, so that the toner remaining on the surface of the printing roller can be cleaned and removed by the cleaning brush roller 401. By cleaning the toner remaining on the surface of the printing roller, it can be prevented from falling onto the surface of the printed matter and causing pollution. The dust exhaust cover 304 can discharge the dust generated when the mechanism removes the toner remaining on the printing roller, and the filter element 305 can filter the dust to avoid the dust being directly discharged into the air and causing pollution. The collecting cover 302 can collect the toner cleaned by the cleaning brush roller 401, and the discharge pipe 303 can discharge the toner collected in the collecting cover 302. The graduated staff will centrally process it later, which improves the convenience of the staff in collecting the collected toner.

[0023] Furthermore, the front and rear sides of the bottom of the support frame 101 are fixedly mounted with a slide bar 104 through the mounting plate 103, and the front and rear sides of the tops of the first closed cover 201 and the second closed cover 301 are fixedly mounted with a slide plate 601 used in conjunction with the slide bar 104. The slide bar 104 and the slide plate 601 can be slidably mounted between the first closed cover 201 and the second closed cover 301, thereby improving the stability of the first closed cover 201 and the second closed cover 301 when they are opened and closed.

[0024] Furthermore, a discharge motor 8 is fixedly installed on the front of the collection cover 302, and a discharge reel 801 is fixedly installed on the output end of the discharge motor 8 through the collection cover 302. The discharge motor 8 drives the discharge reel 801 to rotate inside the collection cover 302, and can drive the toner collected inside to the front side, so that the toner inside the collection cover 302 is discharged through the discharge pipe 303.

[0025] Furthermore, an assembly rod 7 is fixedly mounted on the front of the first closed cover 201, and an assembly sleeve 701 used in conjunction with the assembly rod 7 is fixedly mounted on the front of the second closed cover 301. The assembly rod 7 can be inserted into the assembly sleeve 701 when the first closed cover 201 and the second closed cover 301 are closed, so that the front sides of the first closed cover 201 and the second closed cover 301 can be limited when they are closed, thereby improving the accuracy of the first closed cover 201 and the second closed cover 301 when they are closed and docked.

[0026] Further, the inner side of the back of the first closed cover 201 and the second closed cover 301 is fixedly mounted with a closed ring 5. The closed ring 5 can rotate the transmission shaft of the printing roller, so that it is convenient for the mechanism to remove the toner on the surface of the printing roller and rotate.

[0027] Furthermore, a dust extraction motor 9 is fixedly installed on the front of the dust exhaust cover 304, and a dust extraction fan 901 is fixedly installed on the output end of the dust extraction motor 9 through the dust exhaust cover 304. The dust extraction motor 9 drives the dust extraction fan 901 to rotate, so that the dust generated when the mechanism removes the toner on the printing roller can be extracted and discharged, thereby improving the efficiency and quality of the mechanism in removing the dust generated.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A powder removal mechanism for an offset printing press, characterized in that: The invention comprises a fixing mechanism (1) and a cleaning mechanism (2) and a recovery mechanism (3) which are arranged on the bottom of the fixing mechanism (1) and are distributed on the left and right sides thereof. The fixing mechanism (1) comprises a support frame (101), a fixing plate (102) is fixedly mounted on the back of the support frame (101), a double-headed motor (10) is fixedly mounted at the central position of the bottom of the fixing mechanism (1), and a threaded rod (1001) is fixedly mounted on the output ends of the double-headed motor (10); The cleaning mechanism (2) comprises a first closed cover (201), and the recovery mechanism (3) comprises a second closed cover (301). An adjustment plate (6) threadedly connected to a threaded rod (1001) is fixedly mounted at the central position of the top of each of the first closed cover (201) and the second closed cover (301). A powder removal cover (202) is fixedly mounted above one side of the first closed cover (201). A cleaning motor (4) is fixedly mounted on the front of the powder removal cover (202). A cleaning brush roller (401) is fixedly mounted on the output end of the cleaning motor (4) through the powder removal cover (202). A dust exhaust cover (304) is fixedly mounted above the other side of the first closed cover (201). A filter element (305) is fixedly mounted above the inside of the dust exhaust cover (304). A collection cover (302) is fixedly mounted at the bottom of the first closed cover (201). A discharge pipe (303) is fixedly mounted on the front side of the bottom of the collection cover (302).

2. The powder removal mechanism of an offset printing press according to claim 1, characterized in that: The front side and the rear side of the bottom of the support frame (101) are both fixedly mounted with a slide bar (104) via a mounting plate (103), and the front side and the rear side of the top of the first closed cover (201) and the second closed cover (301) are both fixedly mounted with a slide plate (601) used in conjunction with the slide bar (104).

3. The powder removal mechanism of an offset printing press according to claim 1, characterized in that: A discharge motor (8) is fixedly mounted on the front of the collection cover (302), and a discharge reel (801) is fixedly mounted on the output end of the discharge motor (8) which passes through the collection cover (302).

4. The powder removal mechanism of an offset printing press according to claim 1, characterized in that: An assembly rod (7) is fixedly mounted on the front of the first closed cover (201), and an assembly set (701) used in conjunction with the assembly rod (7) is fixedly mounted on the front of the second closed cover (301).

5. The powder removal mechanism of an offset printing press according to claim 1, characterized in that: A closed ring (5) is fixedly mounted on the inner side of the back of the first closed cover (201) and the second closed cover (301).

6. The powder removal mechanism of an offset printing press according to claim 1, characterized in that: A dust extraction motor (9) is fixedly mounted on the front of the dust exhaust hood (304), and a dust extraction fan (901) is fixedly mounted on the output end of the dust exhaust motor (9) which passes through the dust exhaust hood (304).

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