Cleaning scraper structure

Abstract

The utility model discloses a cleaning scraper structure which comprises a powder bin, a scraper and a pressing plate. A binding face is arranged on the front side of the powder bin, a welding protruding strip extending in the length direction of the powder bin is arranged on the upper portion of the binding face, and a plurality of welding protruding columns arranged at intervals in the length direction of the powder bin are arranged on the lower portion of the binding face. A plurality of through holes arranged at intervals in the length direction of the scraper are formed in the upper part of the scraper; the welding convex columns are arranged in the through holes in a penetrating manner; the pressing plate is welded on the welding convex strip and the welding convex strip, so that the upper part of the scraper is propped against the binding surface; by means of the structure, the scraper and the powder bin can be connected more firmly, the situation that the powder bin leaks powder is avoided, and good practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of printing consumables, and in particular to a cleaning scraper structure. Background Technology

[0002] In photocopying equipment, a cleaning blade is usually installed to scrape off residual developer from the surface of the photosensitive element to prevent residual developer from entering the next imaging cycle and causing printing defects. Chinese utility model patent CN218675695U discloses a powder dispensing blade installation structure, including a powder hopper and a powder dispensing blade that adheres to the developing roller. The powder dispensing blade is made of film, and its rear side is glued and fixed to the inner wall of the powder hopper. Support blocks that adhere to the powder dispensing blade are provided on the left and right sides of the powder hopper, and the end faces of the support blocks that adhere to the powder dispensing blade are arc-shaped. This type of blade has the following disadvantages:

[0003] 1. By attaching the back of the scraper to the inner wall of the powder hopper with glue or strong double-sided tape, the method of gluing is easily affected by factors such as glue quality and assembly method, which may cause the scraper to shift, resulting in insufficient adhesion between the scraper and the developing roller, affecting the cleaning effect of the developing roller, and may even cause powder leakage between the scraper and the powder hopper due to the scraper not being firmly attached.

[0004] 2. The scraper is made of film and has insufficient structural strength. During long-term use, it is easy for the blade to not adhere well to the developing roller, which will also affect the cleaning effect of the developing roller.

[0005] Therefore, there is an urgent need for a cleaning scraper structure to solve the above problems. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a cleaning scraper structure.

[0007] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a cleaning scraper structure, including a powder hopper, a scraper and a pressure plate;

[0008] The front side of the powder hopper is provided with a bonding surface. The upper part of the bonding surface is provided with a welded protrusion extending along the length of the powder hopper, and the lower part is provided with several welded protrusions arranged at intervals along the length of the powder hopper.

[0009] The upper part of the scraper is provided with several through holes arranged at intervals along its length, and the welded protrusions are inserted into the through holes;

[0010] The pressure plate is welded to the welding ridge and the welding ridge so that the upper part of the scraper abuts against the mating surface.

[0011] As one of the preferred embodiments of this utility model, the scraper includes a film and a metal sheet. The film is provided with a receiving groove arranged along its length, and the metal sheet is disposed in the receiving groove.

[0012] As one of the preferred embodiments of this utility model, the film is formed on the outside of the metal sheet by an overmolding process.

[0013] In one of the preferred embodiments of this utility model, the metal sheet is set as an aluminum alloy sheet or a steel sheet.

[0014] As one of the preferred embodiments of this utility model, adhesive is applied between the scraper and the bonding surface and / or between the scraper and the pressure plate.

[0015] As one of the preferred embodiments of this utility model, the welding protrusion and the welding protrusion are integrally injection molded with the powder hopper.

[0016] The beneficial effects of this utility model are as follows: A cleaning scraper structure includes a powder hopper, a scraper, and a pressure plate; the front side of the powder hopper is provided with a contact surface, the upper part of which is provided with a welded protrusion extending along the length direction of the powder hopper, and the lower part is provided with a plurality of welded protrusions arranged at intervals along the length of the powder hopper; the upper part of the scraper is provided with a plurality of through holes arranged at intervals along its length direction, and the welded protrusions pass through the through holes; the pressure plate is welded to the welded protrusions and the welded protrusions so that the upper part of the scraper abuts against the contact surface; the above structure not only makes the connection between the scraper and the powder hopper more secure, but also prevents powder leakage from the powder hopper, and has very good practicality. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of a cleaning scraper structure;

[0019] Figure 2 An exploded view of a cleaning scraper structure;

[0020] Figure 3 This is a cross-sectional view of a cleaning scraper structure. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Reference Figures 1 to 3 A cleaning scraper structure includes a powder hopper 10, a scraper 20, and a pressure plate 30;

[0026] A bonding surface 11 is provided on the front side of the powder hopper 10. The upper part of the bonding surface 11 is provided with a welding protrusion 12 extending along the length direction of the powder hopper 10, and the lower part is provided with a number of welding protrusions 13 arranged at intervals along the length of the powder hopper 10.

[0027] The upper part of the scraper 20 is provided with several through holes 40 arranged at intervals along its length, and the welded protrusion 13 passes through the through holes 40.

[0028] The pressure plate 30 is welded to the welding protrusion 12 and the welding protrusion 12 so that the upper part of the scraper 20 abuts against the mating surface 11.

[0029] In this utility model, during assembly, the through hole 40 on the upper part of the scraper 20 is first aligned with the welding protrusion 13 on the powder hopper 10 and fitted into it, so that the rear side of the upper part of the scraper 20 abuts against the mating surface 11. Then, the pressure plate 30 abuts against the welding protrusion 12 and the welding protrusion 12. After the pressure plate 30 is fixed with a jig, it is welded by an ultrasonic welding device, so that the pressure plate 30 is welded together with the welding protrusion 12 and the welding protrusion 12. The scraper 20 is then clamped between the pressure plate 30 and the powder hopper 10. In some embodiments, the thickness of the scraper 20 is slightly greater than the distance between the pressure plate 30 and the mating surface 11, which can ensure a tight fit between the scraper 20, the powder hopper 10, and the pressure plate 30.

[0030] Reference Figures 1-3 In some embodiments, the scraper 20 includes a film 21 and a metal sheet 22. The film 21 is provided with a receiving groove 23 arranged along its length, and the metal sheet 22 is disposed in the receiving groove 23. The metal sheet 22 plays a shaping role, which enables the scraper 20 to always maintain good structural rigidity and avoid bending due to various factors, which would result in insufficient adhesion between the scraper and the developing roller. The film 21 provides a certain degree of elasticity, which ensures that the scraper 20 and the developing roller always maintain a tight fit, thus ensuring the cleaning effect.

[0031] In some embodiments, the film 21 is formed on the outside of the metal sheet 22 by an overmolding process. During production, the metal sheet 22 is first manufactured by a pultrusion process or a sheet metal bending process, and then the film 21 is formed on the outside of the metal sheet 22 by an overmolding process. This can ensure the strong connection between the film 21 and the metal sheet 22, and also reduce production costs.

[0032] In some embodiments, the metal sheet 22 is configured as an aluminum alloy sheet or a steel sheet. The aluminum alloy sheet has the advantages of low density and high strength, while the steel sheet has the advantages of high strength and low cost.

[0033] In some embodiments, adhesive is applied between the scraper 20 and the mating surface 11 and / or between the scraper 20 and the pressure plate 30. The adhesive can fill the gap between the scraper 20 and the powder hopper 10 and / or the pressure plate 30, further increasing the sealing between the three and preventing powder leakage from the powder hopper 10.

[0034] In some embodiments, the welding protrusion 12 and the welding protrusion 13 are integrally injection molded with the powder hopper 10.

[0035] The advantages of this invention are that the above structure not only makes the connection between the scraper and the powder hopper more secure, but also prevents powder leakage from the powder hopper, making it very practical.

[0036] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A cleaning doctor structure, characterized by: It includes a powder hopper (10), a scraper (20), and a pressure plate (30); The powder hopper (10) has a bonding surface (11) on its front side. The upper part of the bonding surface (11) is provided with a welding protrusion (12) extending along the length direction of the powder hopper (10), and the lower part is provided with a plurality of welding protrusions (13) arranged at intervals along the length of the powder hopper (10). The upper part of the scraper (20) is provided with a plurality of through holes (40) arranged at intervals along its length, and the welding protrusion (13) passes through the through holes (40). The pressure plate (30) is welded to the welding protrusion (12) and the welding protrusion (12) so that the upper part of the scraper (20) abuts against the mating surface (11).

2. A cleaning doctor structure according to claim 1, wherein: The scraper (20) includes a film (21) and a metal sheet (22). The film (21) is provided with a receiving groove (23) arranged along its length direction, and the metal sheet (22) is disposed in the receiving groove (23).

3. A cleaning doctor structure according to claim 2, wherein: The film (21) is formed on the outside of the metal sheet (22) by an overmolding process.

4. A cleaning doctor structure according to claim 2, wherein: The metal sheet (22) is configured as an aluminum alloy sheet or a steel sheet.

5. The cleaning doctor structure of claim 1, wherein: Adhesive is applied between the scraper (20) and the bonding surface (11) and / or between the scraper (20) and the pressure plate (30).

6. A cleaning doctor structure according to claim 1, wherein: The welding protrusion (12) and welding protrusion (13) are integrally injection molded with the powder hopper (10).

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