Top slotting scraper

Abstract

The utility model discloses a top slotting scraper and belongs to the technical field of scrapers. A top slotting scraper comprises a scraper base body, a scraper edge is arranged at the top of the scraper base body and is arranged in an inclined mode, a supporting face is arranged at the end, located at the higher position of the scraper edge, of the scraper base body, a wear-resisting layer is arranged at the position where the scraper edge is connected with the supporting face, and an arc-shaped groove is formed in the position, located below the wear-resisting layer, of the scraper edge. And a combined coating is arranged in the arc-shaped groove. The arc-shaped groove is formed in the top, namely the knife edge, of the knife base body, tiny airflow can be formed through the design of the knife edge inclined face and the arc-shaped groove, paper can be helped to enter and exit stably, the paper deviation and paper jamming phenomena are reduced, printing defects caused by paper deviation are reduced through stable paper entering and exiting, and the printing quality is improved. And the phenomena of paper offset and paper jam are reduced, the operation efficiency of the printing machine is improved, and the shutdown maintenance time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of scrapers, and more particularly to a top slotted scraper. Background Art

[0002] During the printing process, stable paper feed and exit is crucial for ensuring print quality and production efficiency. Traditional scraper designs focus primarily on even ink distribution, but pay less attention to the stability of paper feed and exit. This can lead to paper deviation, wrinkling, and even jams during high-speed printing, seriously affecting print quality and production efficiency. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a top slotted scraper to solve the above deficiencies.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0005] The utility model discloses a top slotted scraper, comprising a blade base, a blade edge is provided on the top of the blade base, the blade edge is arranged obliquely, a support surface is provided at the end of the blade base where the blade edge is located higher, a wear-resistant layer is provided at the position where the blade edge and the support surface are connected, an arc groove is provided at the position where the blade edge is located below the wear-resistant layer, the arc groove can reduce the contact area between the blade edge and the paper, thereby reducing friction, making it easier for the paper to pass through the blade edge, reducing paper deviation and paper jam, and a combined coating is provided inside the arc groove.

[0006] Preferably, the angle between the blade and the horizontal plane is 10°. The bevel design can reduce the contact area between the blade and the paper, forming a sharper cutting angle, thereby reducing friction, helping to cut the paper edge more cleanly and reducing the risk of paper tearing.

[0007] Preferably, the angle between the support surface and the vertical plane is 5°, and the support surface and the blade form a 75° acute angle. The 75° acute angle design can ensure the sharpness of the blade while enhancing the structural strength of the knife base and reducing the wear and deformation of the blade during long-term use.

[0008] Preferably, the arc-shaped groove has a curvature radius of 5 mm, a depth of 0.5 mm, and a width of 2 mm.

[0009] Preferably, a heat dissipation hole penetrating the knife base is provided near the bottom of the arc-shaped groove. The heat dissipation hole is arranged parallel to the knife edge and communicated with the vertical surface of the knife base.

[0010] Preferably, the combined coating includes, from bottom to top, an adhesive layer, an anti-wear layer, a heat dissipation layer and an antistatic layer. The heat dissipation layer is connected to the heat dissipation holes. The adhesive layer uses a primer or adhesive with high adhesion to ensure good bonding between the coating and the arc groove. The anti-wear layer uses tungsten carbide or ceramic coating to improve wear resistance. The heat dissipation layer is a graphene coating. The graphene material also fills the heat dissipation holes to accelerate heat diffusion. The antistatic layer is a polytetrafluoroethylene coating.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0012] The utility model discloses a top slotted scraper, in which an arc groove is provided at the top of the blade base, that is, at the position of the blade edge. The design of the blade edge bevel and the arc groove can form a tiny airflow, which helps the paper to enter and exit smoothly and reduces paper deviation and paper jam. The stable paper entry and exit reduces printing defects caused by paper deviation, improves printing quality, reduces paper deviation and paper jam, improves the operating efficiency of the printing press, and reduces the downtime and maintenance time. The design of the wear-resistant layer enhances the durability of the scraper and extends the service life of the scraper. The combined coating further improves the heat dissipation, wear resistance and anti-static effects of the blade edge, reduces the contact area between the blade edge and the paper, thereby reducing friction and making it easier for the paper to pass through the blade edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of the top slotted scraper of the present invention;

[0014] Figure 2 This is an exploded view of the top slotted scraper of the present utility model;

[0015] Figure 3 It is an enlarged view of point A of the present utility model.

[0016] In the figure: 1, blade; 2, support surface; 3, wear-resistant layer; 4, arc groove; 41, heat dissipation hole; 5, combined coating; 51, bonding layer; 52, anti-wear layer; 53, heat dissipation layer; 54, antistatic layer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in 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.

[0018] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0019] Combine Figure 1-Figure 3 The utility model relates to a top slotted scraper, comprising a blade base, a blade edge 1 being arranged on the top of the blade base, the blade edge 1 being arranged obliquely, the angle between the blade edge 1 and the horizontal plane being 10 degrees, the bevel design can reduce the contact area between the blade edge 1 and the paper, thereby reducing the friction, making it easier for the paper to pass through, reducing the deviation and jam of the paper, the bevel design can make the blade edge 1 form a sharper cutting angle when contacting the paper, which helps to cut the edge of the paper more cleanly and reduce the risk of paper tearing, and the bevel design can play a certain guiding role, helping the paper to pass more smoothly In order to improve the paper's entry and exit stability, a support surface 2 is provided at the end of the blade 1 at a higher position, and a wear-resistant layer 3 is provided at the position where the blade 1 and the support surface 2 are connected. The angle between the support surface 2 and the vertical plane is 5°, and the support surface 2 and the blade 1 form a 75° acute angle. The 75° acute angle design can ensure the sharpness of the blade 1 while enhancing the structural strength of the blade base, reducing the wear and deformation of the blade 1 during long-term use, and optimizing the airflow around the blade 1, reducing the air resistance between the paper and the blade 1, and helping the paper pass more smoothly.

[0020] An arc-shaped groove 4 is provided at the position where the blade 1 is placed below the wear-resistant layer 3. The arc-shaped groove 4 can reduce the contact area between the blade 1 and the paper, thereby reducing friction, making it easier for the paper to pass through the blade 1, and reducing paper deviation and paper jams. The arc-shaped groove 4 forms a tiny airflow channel to help air flow between the paper and the blade 1, reduce the adhesion of the paper to the blade 1, and improve the stability of the paper in and out. The arc-shaped groove 4 can also disperse the pressure of the paper when passing through the blade 1, reduce the concentrated stress on the paper when passing through the blade 1, avoid paper tearing or deformation, guide and help the paper pass through the blade 1 more smoothly, and reduce paper deviation.

[0021] The curvature radius of the arc groove 4 is 5 mm, the depth is 0.5 mm, and the width is 2 mm. A combined coating 5 is provided inside the arc groove 4. A heat dissipation hole 41 that penetrates the knife base is provided near the bottom of the arc groove 4. The heat dissipation hole 41 is arranged parallel to the blade edge 1 and is connected to the vertical surface of the knife base.

[0022] The combined coating 5 includes, from bottom to top, an adhesive layer 51, an anti-wear layer 52, a heat dissipation layer 53 and an antistatic layer 54. The adhesive layer 51 uses a primer or adhesive with high adhesion, such as epoxy resin, to ensure good bonding between the coating and the arc groove 4. The anti-wear layer 52 uses tungsten carbide or ceramic coating to improve wear resistance, with a thickness of 50-100 microns. The heat dissipation layer 53 is a graphene coating with a thickness of 1-5 microns. Graphene has extremely high thermal conductivity and good electrical conductivity, and can effectively dissipate heat. The heat dissipation layer 53 is connected to the heat dissipation hole 41, and the graphene material simultaneously fills the heat dissipation hole 41 to accelerate heat diffusion. The antistatic layer 54 is a polytetrafluoroethylene coating with excellent wear resistance, low friction coefficient and good antistatic performance, with a thickness of 20-50 microns.

[0023] Working process: first, the blade base is processed, and the wear-resistant layer 3 is processed on the blade 1 and the supporting surface 2, and an arc groove 4 is opened at the position of the blade 1. A heat dissipation hole 41 is opened at the bottom of the arc groove 4, and the heat dissipation hole 41 is filled with graphene material. Then, an adhesive layer 51, an anti-wear layer 52, a heat dissipation layer 53 and an antistatic layer 54 are coated in the arc groove 4 in sequence. During operation, the wear-resistant layer 3 contacts the scraping surface for scraping. The inclined setting of the blade 1 reduces friction, and under the action of the arc groove 4, the contact area between the blade 1 and the paper is reduced, making it easier for the paper to pass through the blade 1, reducing the deviation and jam of the paper, and the combined coating 5 enhances the heat dissipation effect while preventing static electricity.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although the 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 these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A top slotted scraper, comprising a blade base, characterized in that: The top of the knife base is provided with a knife edge (1), the knife edge (1) is arranged obliquely, a support surface (2) is provided at the end of the knife base located at a higher position than the knife edge (1), a wear-resistant layer (3) is provided at a position where the knife edge (1) and the support surface (2) are connected, an arc groove (4) is provided at a position where the knife edge (1) is located below the wear-resistant layer (3), and a combined coating (5) is provided inside the arc groove (4).

2. The top slotted scraper according to claim 1, characterized in that: The angle between the blade (1) and the horizontal plane is 10°.

3. The top slotted scraper according to claim 1, characterized in that: The included angle between the support surface (2) and the vertical plane is 5°, and the support surface (2) and the blade (1) form an acute angle of 75°.

4. The top slotted scraper according to claim 1, characterized in that: The arc-shaped groove (4) has a curvature radius of 5 mm, a depth of 0.5 mm and a width of 2 mm.

5. The top slotted scraper according to claim 4, characterized in that: A heat dissipation hole (41) penetrating the knife base body is provided near the bottom of the arc-shaped groove (4). The heat dissipation hole (41) is arranged parallel to the knife edge (1) and communicated with the vertical surface of the knife base body.

6. The top slotted scraper according to claim 5, characterized in that: The combined coating (5) comprises, from bottom to top, an adhesive layer (51), an anti-wear layer (52), a heat dissipation layer (53) and an antistatic layer (54), and the heat dissipation layer (53) is connected to the heat dissipation hole (41).

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