Scraper mounting structure

Abstract

The utility model discloses a scraper installation structure which comprises a powder bin and a scraper, the powder bin is provided with an attaching fixing part, the scraper is provided with an attaching connecting part, the attaching fixing part and the attaching connecting part are attached to each other, a fixed pressing plate is arranged on the attaching connecting part in a press fit mode, the fixed pressing plate and the powder bin are fixed in a welded mode, and the fixed pressing plate is provided with a pressing plate. And the attaching connecting part is clamped and fixed between the fixed pressing plate and the attaching fixing part. Under the action of the fixed pressing plate, the scraper is fixed to the powder bin through ultrasonic welding or hot melting welding, connection is stable, and the problems of scraper displacement and powder leakage caused by degumming in the later period are solved, so that the connecting part is effectively pressed and attached, and the installation stability of the scraper is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of developing roller scrapers, in particular to a scraper installation structure. Background Art

[0002] Prior art, such as the Chinese utility model patent document with publication number CN218675695U, discloses a powder scraper mounting structure comprising a powder hopper and a powder scraper bonded to a developing roller. The powder scraper is made of film, with the rear side of the scraper adhesively fixed to the inner wall of the powder hopper. Support blocks are provided on the left and right sides of the powder hopper, each of which is bonded to the powder scraper. The end faces of the support blocks that bond to the powder scraper are curved. This utility model directly replaces the existing scraper, which combines a steel frame and film, with a film-type powder scraper. During assembly, the rear side of the powder scraper is bonded to the inner wall of the powder hopper using glue or strong double-sided tape.

[0003] Based on the above, in the existing technology, the scraper is fixed to the powder bin with glue or strong double-sided tape. The problem with this gluing fixation method is that the glue may stick due to problems with the glue quality or assembly technique. During the later degumming, the scraper is prone to displacement, causing interference between the scraper and the developing roller, thereby affecting the normal operation of the developing roller. At the same time, if the glue layer of the scraper is separated, there will be space for powder leakage between the scraper and the powder bin, which needs further improvement. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems in the prior art. To this end, the utility model proposes a scraper mounting structure.

[0005] A scraper mounting structure designed for this purpose includes a powder bin and a scraper, the powder bin is provided with a fitting fixing portion, the scraper is provided with a fitting connecting portion, the fitting connecting portion and the fitting fixing portion are fitted with each other, a fixed pressure plate is pressed on the fitting connecting portion, the fixed pressure plate is welded and fixed to the powder bin, and the fitting connecting portion is clamped and fixed between the fixed pressure plate and the fitting fixing portion.

[0006] Preferably, a plurality of welding protrusions are provided on the fitting connection portion, and openings are provided on the fitting connection portion at positions corresponding to the welding protrusions. The welding protrusions are movably inserted into the openings and fixed to the fixed pressure plate by ultrasonic welding.

[0007] Preferably, the scraper is made of film or steel sheet.

[0008] Compared with the prior art, the present invention has a fixed pressure plate pressed against the bonding connection portion, which is welded to the powder bin, and the bonding connection portion is clamped and fixed between the fixed pressure plate and the bonding fixing portion. Under the action of the fixed pressure plate, the present invention is fixed to the powder bin by ultrasonic welding or heat-melt welding, resulting in a stable connection. Later, problems such as scraper displacement and powder leakage due to debonding will not occur, thereby effectively pressing the bonding connection portion to ensure the installation stability of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the exploded structure of the utility model;

[0011] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0012] Figure 4 for Figure 3 A in the middle is an enlarged structural diagram;

[0013] Figure 5 This is the second schematic diagram of the decomposition structure of the utility model;

[0014] Figure 6 for Figure 5 Enlarged structural diagram at point B in the middle. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] See also Figures 1-6 A scraper installation structure includes a powder bin 10 and a scraper 20. The powder bin 10 is provided with a fitting fixing portion 100, and the scraper 20 is provided with a fitting connection portion 200. The fitting connection portion 200 and the fitting fixing portion 100 are fitted with each other. A fixed pressure plate 30 is pressed on the fitting connection portion 200. The fixed pressure plate 30 is welded and fixed to the powder bin 10. The fitting connection portion 200 is clamped and fixed between the fixed pressure plate 30 and the fitting fixing portion 100. Under the action of the fixed pressure plate, the utility model is fixed to the powder bin by ultrasonic welding or hot melt welding. The connection is stable and there will be no debonding problem in the later stage. The fitting connection portion is effectively pressed to ensure the installation stability of the scraper. It can solve the existing problems of scraper displacement and powder leakage due to debonding.

[0017] See also Figure 2 and Figure 4The fitting connection portion 100 is provided with a plurality of welding protrusions 110, and the fitting connection portion 200 is provided with openings 210 at positions corresponding to the welding protrusions 110. The welding protrusions 110 are movably inserted into the openings 210 and fixed to the fixed pressure plate 30 by ultrasonic welding.

[0018] The welding protrusion 110 not only aligns with the opening 210 and constrains the position of the scraper 20, ensuring precise installation of the scraper 20, but also welds and secures it to the fixed pressure plate 30. During production, the welding protrusion 110 and the fixed pressure plate 30 are secured using ultrasonic welding.

[0019] In the present invention, the scraper 20 is made of a film or a steel sheet.

[0020] See also Figure 5 and Figure 6 The fixed pressure plate 30 is provided with a positioning hole 310, and the powder hopper 10 is provided with a positioning post 120 that plugs into the positioning hole 310. The positioning post 120 is fixed to the fixed pressure plate 30 by heat-melting. During assembly, the positioning post 120 is inserted into the positioning hole 310 and then fixed to the fixed pressure plate 30 by heat-melting. This fixes the pressure plate 30 to the powder hopper 10, and the pressure plate 30 and the powder hopper 10 clamp and fix the scraper 20.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0022] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A scraper installation structure, comprising a powder bin (10) and a scraper (20), characterized in that: The powder bin (10) is provided with a fitting fixing portion (100), and the scraper (20) is provided with a fitting connection portion (200). The fitting connection portion (200) and the fitting fixing portion (100) are fitted with each other. A fixed pressure plate (30) is pressed on the fitting connection portion (200). The fixed pressure plate (30) is welded and fixed to the powder bin (10), and the fitting connection portion (200) is clamped and fixed between the fixed pressure plate (30) and the fitting fixing portion (100).

2. The scraper installation structure according to claim 1, characterized in that: The fitting connection portion (200) is provided with a plurality of welding protrusions (110), and the fitting connection portion (200) is provided with openings (210) at positions corresponding to the welding protrusions (110). The welding protrusions (110) are movably inserted into the openings (210) and fixed to the fixed pressing plate (30) by ultrasonic welding.

3. The scraper installation structure according to claim 1, characterized in that: The scraper (20) is made of film or steel sheet.

4. The scraper installation structure according to claim 1, characterized in that: The fixed pressure plate (30) is provided with a positioning hole (310), and the powder bin (10) is provided with a positioning column (120) plugged into and matched with the positioning hole (310), and the positioning column (120) is fixed to the fixed pressure plate (30) by hot-melt welding.

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