Dustproof printing roller

Abstract

The utility model discloses a dustproof printing roller which comprises a base frame and a roller body rotationally arranged on the base frame. And the dust removal assembly comprises scraping plates which are symmetrically arranged on the lifting base and keep horizontal relative sliding, and arc-shaped rubbing parts are arranged on the scraping plates. According to the dustproof printing roller provided by the utility model, excessive printing ink or dust groups which are easy to coagulate into blocks on the upper surface of the roller body are scraped by utilizing the dust removal assembly on the lifting seat and the front end part of the scraping part of the scraping plate in a downward pressing manner, so that stubborn impurities on the upper surface of the roller body are removed, and then the scraping part is attached to the surface of the roller body; the surface of the roller body rotates to rub the inner side face of the rubbing part, fine dust adhering to the peripheral side of the roller body is further adhered and scraped away, the diameter value uniformity of the roller body in the circumferential direction can be repaired, and therefore the printing cleaning performance and uniformity of the roller body are further improved.

Description

Technical Field

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

[0002] The printing roller is an important accessory of the offset printing machine. When printing, the offset printing machine first prints the printing plate onto the printing roller, and then the printing roller transfers the printing plate to be printed onto materials such as plastic paper. The offset printing machine is widely used in fields such as advertising printing.

[0003] According to publication number CN216507320U, publication (announcement) date: 2022.05.13, a uniformly smeared residue-removing printing roller is disclosed. Aiming at the problem that the existing printing roller cannot adjust the length, it is easy to cause uneven printing when printing wider fabrics, and the printing roller is prone to residual dye, the following scheme is now proposed, which includes a main roller and an auxiliary roller, the number of the main rollers is two, the main roller and the auxiliary roller are both hollow structures, a shell is fixedly installed on the inner wall of the auxiliary roller, and a control panel is fixedly installed on the left and right sides of the shell, the outer sides of the two main rollers are rotatably connected with a rotating frame, and the sides of the two rotating frames close to each other are fixedly installed with scrapers, and the two scrapers are slidably connected. The utility model can separate the auxiliary roller from the main roller by rotating the auxiliary roller between the two main rollers, and the main roller can form a shorter printing roller. When the left and right ends of the auxiliary roller are respectively inserted into the two main rollers, the main roller and the auxiliary roller can form a longer printing roller.

[0004] In the prior art including the above-mentioned patent, a main roller and a secondary roller are combined to form a printing roller, and the main roller and the secondary roller are rotated to perform printing operations. However, since no dust removal component is provided on the formed printing roller, the surface of the printing roller is easily contaminated with dust. Due to the obstruction of dust, the finished product printed by the printing roller may be unclear or obstructed, resulting in reduced uniformity of product printing. Utility Model Content

[0005] The utility model aims to provide a dustproof printing roller to solve the above problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a dustproof printing roller comprises a base frame and a roller body rotatably arranged thereon, and the base frame is also provided with:

[0007] A lifting seat, which is driven to move vertically relative to the roller body;

[0008] The dust removal component comprises a scraper symmetrically arranged on a lifting seat to maintain horizontal relative sliding, the scraper is provided with an arc-shaped scraping part, the lifting seat is driven to slide vertically so that the scraper is driven relatively away, and the scraping part moves to fit the surface of the roller body.

[0009] Preferably, the two scrapers are provided with elastic members for driving the scrapers to slide closer to each other.

[0010] Preferably, a plurality of rotating rollers distributed in a circular array are rotatably arranged on the scratching portion, and flexible scraping strips are arranged in a circular array on the rotating rollers. The axis of the rotating rollers is parallel to the axis of the roller body, and the rotating rollers are located on the side of the scratching portion facing the roller body. The roller body is driven to rotate and scratch the rotating rollers so that the flexible scraping strips rotate circumferentially in turn and scratch the surface of the roller body.

[0011] Preferably, the scraper is provided with a dust scraping groove and a connecting groove, the dust scraping groove and the connecting groove are connected through a connecting cavity provided in the scraper, the dust scraping groove is located on the side of the roller body facing the end of the scratching part, and the rotating roller is driven to rotate so that the flexible scraping strip rotates into the connecting cavity in sequence.

[0012] Preferably, it also includes a dust box arranged on the lifting seat, the connecting groove faces the inside of the dust box, the dust box is fixedly connected with a rubber support, the rubber support is symmetrically and obliquely provided with a filter plate, and the rubber support and the filter plate are both located between the two scrapers, and the high end of the filter plate is in contact with the scraper surface.

[0013] Preferably, the lifting seat is provided with an insertion groove for inserting and installing the dust box, and the dust box is symmetrically provided with limiting parts for fixing and limiting with the lifting seat.

[0014] Preferably, a telescopic cylinder for driving the lifting seat to vertically rise and fall is arranged in the base frame.

[0015] In the above technical scheme, a dust-proof printing roller provided by the utility model has the following beneficial effects: utilizing the dust removal assembly on the lifting seat, the tip end of the scraping part of the scraper is pressed downward to scrape off the excess ink or dust groups that are easily condensed into blocks on the upper surface of the roller body, thereby removing the stubborn debris on the upper surface of the roller body, and then the scratching part is attached to the surface of the roller body, so that the surface of the roller body rotates to scratch the inner side of the scratching part, thereby further scraping off the fine dust adhered to the peripheral side of the roller body, and secondly, the uniformity of the diameter value of the roller body in the circumferential direction can be restored, thereby further improving the printing cleanability and uniformity of the roller body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the utility model;

[0018] Figure 2 A schematic cross-sectional view of the overall structure provided for an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of a dust removal assembly provided in an embodiment of the utility model;

[0020] Figure 4 A partial enlarged schematic diagram of point A provided in an embodiment of the utility model;

[0021] Figure 5 This is a partial enlarged schematic diagram of point B provided in an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1. Base frame; 2. Roller body; 3. Lifting seat; 31. Insertion slot; 4. Dust removal assembly; 41. Scraper; 411. Scraping part; 412. Sliding part; 413. Dust scraping slot; 414. Connecting slot; 415. Connecting cavity; 42. Elastic member; 43. Rotating roller; 431. Flexible scraping strip; 5. Dust box; 51. Limiting part; 6. Rubber support member; 7. Filter plate; 9. Telescopic cylinder. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0025] like Figure 1-5 As shown, a dustproof printing roller comprises a base frame 1 and a roller body 2 rotatably arranged thereon, and the base frame 1 is also provided with:

[0026] A lifting seat 3 is driven to move vertically relative to the roller body 2;

[0027] The dust removal assembly 4 includes a scraper 41 symmetrically arranged on the lifting seat 3 to maintain horizontal relative sliding. The scraper 41 is provided with an arc-shaped scraping portion 411. The lifting seat 3 is driven to slide vertically so that the scraper 41 is driven relatively away, and the scraping portion 411 moves to fit the surface of the roller body 2.

[0028] Specifically, Figure 1 As shown, the roller body 2 is rotatably arranged on the base frame 1, and the lifting seat 3 is vertically lifted and lowered on the base frame 1, and the scraper 41 of the dust removal component 4 is arranged on the lifting seat 3, as shown in FIG. Figure 3As shown, the scraper 41 is provided with a sliding portion 412 to be located on the lifting seat 3 and to maintain horizontal sliding. When the lifting seat 3 is driven to move vertically downward to approach the roller body, the scraper 41 also moves vertically downward and gradually approaches the surface of the roller body 2 until the end of the scraping portion 411 of the scraper 41 contacts the surface of the roller body 2. Then the lifting seat 3 continues to move vertically downward. Since the scraping portion 411 contacts the roller body 2, the scraper 41 slides away from each other in the horizontal direction under the driving force of the reaction force, so that the end of the scraping portion 411 gradually scrapes downward along the surface of the roller body 2 and applies a certain pressure, thereby pressing down through the end of the scraping portion 411. The roller 2 is scraped to scrape off the excess ink or dust groups that are easily condensed into blocks on the surface of the roller 2, thereby improving the clarity and uniformity of subsequent printing using the roller 2; when the lifting seat 3 moves vertically downward until the scrapers 41 are far away from each other to the maximum value, the inner side of the scratching part 411 is in contact with the surface of the roller 2. At this time, the roller 2 can be driven to rotate, so that the surface of the roller 2 rotates to scrape against the inner side of the scratching part 411, and the fine dust adhered to the side of the roller 2 is further scraped off. Secondly, the uniformity of the diameter value of the roller 2 in the circumferential direction can be repaired, thereby further improving the printing cleanability and uniformity of the roller 2.

[0029] Furthermore, a telescopic cylinder 9 for driving the lifting seat 3 to move vertically is arranged in the base frame 1. The telescopic cylinder 9 is used to drive the lifting seat 3 to move vertically, thereby improving the activity stability and use stability of the lifting seat 3.

[0030] In the above technical scheme, the dust removal assembly 4 on the lifting seat 3 is utilized, and the tip end of the scraping portion 411 of the scraper 41 is pressed downward to scrape off the excess ink or dust groups that are easily condensed into blocks on the upper surface of the roller body 2, thereby removing the stubborn debris on the upper surface of the roller body 2. Subsequently, the scraping portion 411 is attached to the surface of the roller body 2, so that the surface of the roller body 2 rotates to scrape against the inner side of the scraping portion 411, thereby further scraping off the fine dust adhered to the peripheral side of the roller body 2, and secondly, the uniformity of the circumferential diameter of the roller body 2 can be restored, thereby further improving the printing cleanability and uniformity of the roller body 2.

[0031] As an embodiment further provided by the present invention, the two scrapers 41 are provided with elastic members 42 for driving the scrapers 41 to slide relatively close to each other.

[0032] Specifically, Figure 3 As shown, an elastic member 42 is provided between the two scrapers 41 to drive the two scrapers 41 to slide relatively close to each other and nearly reset to a default state when the two scrapers 41 are not in contact with the roller body 2, so as to facilitate the next use of the scraper 41 to clean the roller body 2, which is convenient for actual operation and use.

[0033] The elastic member 42 can be replaced by a tension spring, an air bag, an elastic plate or other elastic workpieces known to those skilled in the art.

[0034] As an embodiment further provided by the present invention, a plurality of rotating rollers 43 distributed in a circular array are rotatably arranged on the scratching portion 411, and flexible scraping strips 431 are arranged in a circular array on the rotating rollers 43. The axis of the rotating rollers 43 is parallel to the axis of the roller body 2, and the rotating rollers 43 are located on the side of the scratching portion 411 facing the roller body 2. The roller body 2 is driven to rotate and scratch the rotating rollers 43 so that the flexible scraping strips 431 rotate circumferentially in turn and scratch the surface of the roller body 2.

[0035] Specifically, Figure 5 As shown, the rotating roller 43 is rotatably arranged on the side of the scraping portion 411 facing the roller body 2, and a flexible scraper strip 431 is arranged in a circumferential array on the rotating roller 43. When the lifting seat 3 moves vertically downward until the scrapers 41 are far away from each other to the maximum value, the inner side of the scraping portion 411 is already in contact with the surface of the roller body 2, and the rotating roller 43 follows the scraping portion 411 to be in contact with the surface of the roller body 2 so that the flexible scraper strip 431 is bent and attached to the surface of the roller body 2. At this time, the roller body 2 can be driven to rotate. Under the action of friction, the roller body 2 can drive the rotating roller 43 to rotate, and the flexible scraper strip 431 follows As the rotating roller 43 rotates, it rotates and bends in sequence to fit the surface of the roller body 2. Therefore, a number of flexible scraping strips 431 scrape and bend relative to the surface of the roller body 2 to further clean and scrape the surface of the roller body 2, further improving the cleaning effect on the roller body 2 and increasing the printing cleaning and uniformity of the roller body 2. Secondly, due to the presence of the elastic member 42, the elastic member 42 can apply a relatively close pulling force to the two scrapers 41. Therefore, the elastic member 42 generates pressure on the surface of the roller body 2 on the scraping portion 411, thereby further increasing the cleaning effect of the flexible scraping strips 431 on the roller body 2. When the roller body 2 stops rotating, the pressure of the elastic member 42 on the scraping portion 411 makes the flexible scraping strips 431 of the rotating roller 43 fit the surface of the roller body 2 more closely, thereby further improving the uniformity of the diameter value of the roller body 2 in the circumferential direction.

[0036] As an embodiment further provided by the present invention, a dust scraping groove 413 and a connecting groove 414 are provided on the scraper 41. The dust scraping groove 413 and the connecting groove 414 are connected via a connecting cavity 415 provided in the scraper 41. The dust scraping groove 413 is located at the end of the scratching portion 411 facing the side of the roller body 2. The rotating roller 43 is driven to rotate so that the flexible scraping strip 431 rotates into the connecting cavity 415 in sequence.

[0037] Specifically, as shown in FIG. 2 , the scraper 41 is provided with a dust scraping notch 413 and a connecting notch 414. Figure 5As shown, the scraping groove 413 is located at the end of the scraping portion 411 facing the roller body 2. The lifting seat 3 continues to move vertically downward, so that the end of the scraping portion 411 is scraped downward to scrape off excess ink or dust groups that are easily condensed into blocks on the upper surface of the roller body 2. Due to the existence of the scraping groove 413, the contact area between the scraping portion 411 and the roller body 2 can be reduced, thereby facilitating the scraping portion 411 to scrape off excess ink or dust groups on the upper surface of the roller body 2, thereby improving the cleaning performance. When the inner side of the scraping portion 411 is in contact with the surface of the roller body 2, the scraping notch 413 faces the surface of the roller body 2, so that the roller body 2 can rotate to drive the rotating roller 43 to rotate by friction. The surface of the roller body 2 passes through the scraping notch 413 in sequence due to the rotation, and the rotating roller 43 is driven to rotate so that the flexible scraping strip 431 rotates in sequence into the connecting cavity 415, so that the airflow in the connecting cavity 415 is formed by the movement of the flexible scraping strip 431, so that the tiny dust scraped off the roller body 2 follows the airflow and floats along the connecting cavity 415 to the connecting notch 414 and is discharged, thereby reducing the problem of dust falling on the surface of the roller body 2 again and causing secondary pollution, and improving the actual cleaning effect. Due to the presence of two scrapers 41, the roller body 2 needs to be rotated in both directions in order to further improve the cleaning effect during actual cleaning.

[0038] As a further embodiment of the present invention, it also includes a dust box 5 arranged on the lifting seat 3, the connecting slot 414 faces the inside of the dust box 5, a rubber support 6 is fixedly connected to the dust box 5, a filter plate 7 is symmetrically and obliquely arranged on the rubber support 6, and the rubber support 6 and the filter plate 7 are both located between the two scrapers 41, and the high end of the filter plate 7 is in contact with the surface of the scraper 41.

[0039] Specifically, Figure 4 As shown, the dust box 5 is arranged on the lifting seat 3, and the communication slot 414 is always facing the dust box 5 during the horizontal relative sliding of the scraper 41. When the tiny dust scraped off the roller body 2 follows the airflow and floats and is discharged along the communication cavity 415 to the communication slot 414, the dust can be collected in the dust box 5, and the dust box 5 sets the filter plate 7 between the two scrapers 41 through the rubber support 6. When the two scrapers 41 slide horizontally relative to each other, the distance between the scrapers 41 changes, and the rubber support 6 can be deformed so that the high end of the filter plate 7 always contacts the scraper 41. Since the filter plate 7 is inclined and the horizontal height of the filter plate 7 contacts the horizontal height of the communication slot 414, when the dust is collected in the dust box 5, the dust is deposited between the angles of the filter plate 7, thereby avoiding the problem of dust emerging from the dust box 5 and falling back on the roller body 2 to cause pollution.

[0040] Furthermore, the lifting seat 3 is provided with an insertion groove 31 for inserting and installing the dust box 5, and the dust box 5 is symmetrically provided with a limiting portion 51 for fixing and limiting the lifting seat 3. The dust box 5 can be slid up to release the limiting portion 51 and the lifting seat 3, and then the dust box 5 can be taken out of the insertion groove 31 for cleaning, thereby realizing the detachable cleaning of the dust box 5, which is convenient for practical use.

[0041] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dustproof printing roller, characterized in that: It comprises a base frame (1) and a roller body (2) rotatably arranged thereon, and the base frame (1) is also provided with: A lifting seat (3) is driven to move vertically relative to the roller body (2); The dust removal assembly (4) comprises a scraper (41) symmetrically arranged on a lifting seat (3) to maintain horizontal relative sliding, the scraper (41) being provided with an arc-shaped scraping portion (411), the lifting seat (3) being driven to slide vertically so that the scraper (41) is driven relatively away, and the scraping portion (411) moves to fit the surface of the roller body (2).

2. The dustproof printing roller according to claim 1, characterized in that: The two scrapers (41) are provided with elastic members (42) for driving the scrapers (41) to slide relatively toward each other.

3. The dustproof printing roller according to claim 2, characterized in that: A plurality of rotating rollers (43) distributed in a circumferential array are rotatably arranged on the scratching portion (411), and flexible scraping strips (431) are arranged in a circumferential array on the rotating rollers (43). The axes of the rotating rollers (43) are parallel to the axes of the roller body (2), and the rotating rollers (43) are located on the side of the scratching portion (411) facing the roller body (2). The roller body (2) is driven to rotate and scrape the rotating rollers (43) so that the flexible scraping strips (431) sequentially rotate circumferentially and scrape the surface of the roller body (2).

4. The dustproof printing roller according to claim 3, characterized in that: The scraper (41) is provided with a dust scraping notch (413) and a connecting notch (414); the dust scraping notch (413) and the connecting notch (414) are connected via a connecting cavity (415) provided in the scraper (41); the dust scraping notch (413) is located at the end of the scraping portion (411) facing the roller body (2); the rotating roller (43) is driven to rotate so that the flexible scraping strips (431) rotate sequentially and enter the connecting cavity (415).

5. The dustproof printing roller according to claim 4, characterized in that: It also comprises a dust box (5) arranged on the lifting seat (3), the connecting slot (414) faces the inside of the dust box (5), a rubber support member (6) is fixedly connected to the dust box (5), a filter plate (7) is symmetrically and obliquely arranged on the rubber support member (6), and the rubber support member (6) and the filter plate (7) are both located between the two scrapers (41), and the high end of the filter plate (7) contacts the surface of the scraper (41).

6. The dustproof printing roller according to claim 5, characterized in that: The lifting seat (3) is provided with an insertion groove (31) for inserting and installing the dust box (5), and the dust box (5) is symmetrically provided with a limiting portion (51) for fixing and limiting the position with the lifting seat (3).

7. The dustproof printing roller according to claim 1, characterized in that: A telescopic cylinder (9) for driving the lifting seat (3) to vertically lift is arranged in the base frame (1).

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