A toner cartridge powder discharging knife

Abstract

The utility model discloses a toner cartridge powder knife, comprising a knife holder, a front powder knife and a rear powder knife, wherein the front powder knife and the rear powder knife are fixedly mounted on the knife holder, the front powder knife and the rear powder knife are tangentially connected to a magnetic roller, the front powder knife, the front powder knife and the rear powder knife are arranged at intervals, a powder outlet is provided between the knife holder and the front powder knife, a baffle is provided in the powder outlet for rotation, a rotating shaft is fixed at both ends of the baffle, the rotating shaft is rotationally matched with the knife holder, a knob is fixed outwardly through one of the rotating shafts through the knife holder, a baffle position locking structure is installed on the knife holder, and both sides of the baffle are provided with convex arc surfaces coaxial with the rotating shaft, and both sides of the powder outlet have concave arc surfaces for slidingly matching with the baffle. The toner cartridge powder knife has the advantages of being easy to clean carbon powder, simple to operate, and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of laser printers, in particular to a toner cartridge powder discharging knife. Background Art

[0002] The toner cartridges used in most laser printers are of an integrated structure consisting of a powder bin and a waste toner bin, and the powder bin is equipped with a magnetic roller and a powder knife. Due to the backward processing technology, the toner produced will always contain a certain amount of impurities, and the toner impurity content of toner is higher for toner cartridges that are easy to add toner and toner cartridges that can recycle waste toner. During the printing process, the impurities contained in the toner can easily cause impurity lines or even toner leakage and other printing defects.

[0003] In order to better improve the printing quality, the current Chinese patent CN201720157783.3 discloses a toner cartridge with a dual powder knife structure, which includes a powder bin part and a waste powder bin part; a magnetic roller, a front powder knife and a rear powder knife are provided at the powder outlet of the powder bin part, and the front and rear powder knives are tangentially connected to the magnetic roller in the same direction.

[0004] However, during the use of the above patented technology, carbon powder will accumulate between the front powder discharge knife and the rear powder discharge knife, and needs to be cleaned regularly. However, it has the following problems:

[0005] 1. The size of the powder outlet between the front powder knife and the rear powder knife is small, which makes it time-consuming and laborious to clean the toner between the front powder knife and the rear powder knife, causing great inconvenience to the normal use of the printer.

[0006] 2. The front powder knife and the rear powder knife are connected to the mounting base through the front base frame and the rear base frame respectively, with poor integrity and many accessories, which brings great inconvenience to production. Summary of the invention

[0007] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is how to provide a toner cartridge powder discharge knife that is easy to clean carbon powder, simple to operate and convenient to use.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] A toner cartridge powder discharge knife comprises a knife frame, a front powder discharge knife and a rear powder discharge knife, wherein the front powder discharge knife and the rear powder discharge knife are fixedly mounted on the knife frame, the front powder discharge knife and the rear powder discharge knife are tangentially connected to a magnetic roller, the front powder discharge knife, the front powder discharge knife and the rear powder discharge knife are arranged at intervals,

[0010] A powder outlet is provided between the front powder outlet knife and the rear powder outlet knife of the tool holder, a blocking cover is rotatably provided in the powder outlet, a rotating shaft is fixed at both ends of the blocking cover, the rotating shaft is rotatably provided with the tool holder, one of the rotating shafts passes through the tool holder and is fixed with a knob outwardly, and a blocking cover position locking structure is installed on the tool holder;

[0011] Both sides of the blocking cover are provided with outward convex arc surfaces coaxial with the rotating shaft, and both sides of the powder outlet are provided with outward concave arc surfaces slidably matched with the blocking cover.

[0012] In this way, by setting up a single knife holder, a mounting base is provided for the front powder knife and the rear powder knife, thereby improving the integrity. The knife holder is installed in the toner cartridge. During the printing process, the front powder knife and the rear powder knife are both tangentially connected to the magnetic roller in the same direction in the front and back directions, which can make the powder control more uniform. The setting of the rear powder knife can significantly improve the impurity line appearing on the front powder knife, which is conducive to reducing the adverse effects of impurities in the toner on printing, and the structure is simpler, production is easier, and installation is convenient.

[0013] In order to better clean the carbon powder between the front powder knife and the rear powder knife, the front powder knife and the rear powder knife are set at intervals, and the blades of the front powder knife and the rear powder knife can be wiped to keep the blades clean. At the same time, through the setting of the cover, the knob is turned to drive the shaft to rotate, so as to drive the cover to rotate, so that the powder outlet is opened and the carbon powder can be cleaned out. The position of the cover is locked through the cover position locking structure to prevent powder leakage from the powder outlet.

[0014] Among them, the blocking cover position locking structure includes an elastic locking mechanism, which includes an internal threaded cylinder fixedly installed on the tool holder, a ball-end screw is installed in the internal threaded cylinder, the tool holder is provided with a clearance opening facing the ball-end screw, the ball of the ball-end screw passes through the clearance opening, and the blocking cover is provided with a slot that can be engaged with the ball of the ball-end screw.

[0015] Wherein, the cover position locking structure includes two elastic locking mechanisms, and the elastic locking structures are symmetrically arranged on both sides of the rotating shaft.

[0016] Wherein, two sides of the blocking cover are concave to form a receiving groove.

[0017] Wherein, the front powder discharging knife and the rear powder discharging knife are bonded to the knife holder.

[0018] Wherein, two blocking cover position locking structures are provided and are located on both sides of the tool holder.

[0019] In summary, the toner cartridge powder discharge knife has the advantages of being easy to clean toner, simple to operate and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a structural schematic diagram of a toner cartridge powder discharge knife.

[0021] Figure 2 for Figure 1 Schematic diagram of the toner cleaning state.

[0022] Figure 3 for Figure 1 sectional view of .

[0023] Figure 4 for Figure 1 An enlarged schematic diagram of point A.

[0024] Figure 5 for Figure 2 An enlarged schematic diagram of point B. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "upper, lower" and "top, bottom" are usually 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. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0026] like Figure 1-5 As shown, a toner cartridge powder discharge knife comprises a knife holder 1, a front powder discharge knife 2 and a rear powder discharge knife 3, wherein the front powder discharge knife and the rear powder discharge knife are fixedly mounted on the knife holder, the front powder discharge knife and the rear powder discharge knife are tangentially connected to the magnetic roller, and the front powder discharge knife and the rear powder discharge knife are spaced apart.

[0027] A powder outlet 4 is provided between the front powder outlet knife and the rear powder outlet knife of the tool holder, and a blocking cover 5 is rotatably provided in the powder outlet. A rotating shaft is fixed at both ends of the blocking cover, and the rotating shaft is rotatably provided with the tool holder. A knob 6 is fixed to one of the rotating shafts passing through the tool holder, and a blocking cover position locking structure is installed on the tool holder.

[0028] The two sides of the blocking cover are provided with outward convex arc surfaces 7 coaxial with the rotating shaft, and the two sides of the powder outlet are provided with outward concave arc surfaces slidably matched with the blocking cover.

[0029] In this way, by setting up a single knife holder, a mounting base is provided for the front powder knife and the rear powder knife, thereby improving the integrity. The knife holder is installed in the toner cartridge. During the printing process, the front powder knife and the rear powder knife are both tangentially connected to the magnetic roller in the same direction in the front and back directions, which can make the powder control more uniform. The setting of the rear powder knife can significantly improve the impurity line appearing on the front powder knife, which is conducive to reducing the adverse effects of impurities in the toner on printing, and the structure is simpler, production is easier, and installation is convenient.

[0030] In order to better clean the carbon powder between the front powder knife and the rear powder knife, the front powder knife and the rear powder knife are set at intervals, and the blades of the front powder knife and the rear powder knife can be wiped to keep the blades clean. At the same time, through the setting of the cover, the knob is turned to drive the shaft to rotate, so as to drive the cover to rotate, so that the powder outlet is opened and the carbon powder can be cleaned out. The position of the cover is locked through the cover position locking structure to prevent powder leakage from the powder outlet.

[0031] The outer convex arc surface and the outer concave arc surface are matched and arranged coaxially with the rotating shaft, so that the rotation is convenient and powder leakage at the connection is avoided.

[0032] During implementation, the cover position locking structure includes an elastic snap mechanism, which includes an internal threaded barrel 8 fixedly mounted on the tool holder, a ball screw 9 is installed in the internal threaded barrel, the tool holder is provided with a clearance opening facing the ball screw, the ball of the ball screw passes through the clearance opening, and the cover is provided with a slot 10 that can be engaged with the ball of the ball screw. By setting the elastic snap mechanism, the cover can be locked in place, and it is also convenient for the cover to rotate and open.

[0033] During implementation, the cover position locking structure includes two elastic snap-fit ​​mechanisms, and the elastic snap-fit ​​structures are symmetrically arranged on both sides of the rotating shaft to improve the locking effect.

[0034] During implementation, the two sides of the cover are concave to form a receiving groove 11. It is convenient for carbon powder to enter the receiving groove, and when the cover is rotated, the carbon powder is rotated out for easy cleaning.

[0035] During implementation, the front powder discharging knife and the rear powder discharging knife are bonded to the knife holder for easy connection.

[0036] During implementation, two blocking cover position locking structures are provided and located on both sides of the tool holder to improve the locking effect.

[0037] Finally, it should be noted that those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A toner cartridge powder knife, comprising a knife holder, a front powder knife and a rear powder knife, wherein the front powder knife and the rear powder knife are fixedly mounted on the knife holder, the front powder knife and the rear powder knife are tangentially connected to a magnetic roller, the front powder knife, the front powder knife and the rear powder knife are spaced apart, and characterized in that: A powder outlet is provided between the front powder outlet knife and the rear powder outlet knife of the tool holder, a blocking cover is rotatably provided in the powder outlet, a rotating shaft is fixed at both ends of the blocking cover, the rotating shaft is rotatably provided with the tool holder, one of the rotating shafts passes through the tool holder and is fixed with a knob outwardly, and a blocking cover position locking structure is installed on the tool holder; Both sides of the blocking cover are provided with outward convex arc surfaces coaxial with the rotating shaft, and both sides of the powder outlet are provided with outward concave arc surfaces slidably matched with the blocking cover.

2. A toner cartridge powder knife according to claim 1, characterized in that: The blocking cover position locking structure includes an elastic locking mechanism, which includes an internal threaded cylinder fixedly mounted on the tool holder, a ball-end screw is installed in the internal threaded cylinder, the tool holder is provided with a clearance opening facing the ball-end screw, the ball of the ball-end screw passes through the clearance opening, and the blocking cover is provided with a slot that can be engaged with the ball of the ball-end screw.

3. A toner cartridge powder knife according to claim 2, characterized in that: The blocking cover position locking structure includes two elastic locking mechanisms, and the elastic locking structures are symmetrically arranged on both sides of the rotating shaft.

4. A toner cartridge powder knife according to claim 1, characterized in that: The two sides of the blocking cover are concave to form a receiving groove.

5. A toner cartridge powder knife according to claim 1, characterized in that: The front powder discharging knife and the rear powder discharging knife are bonded to the knife holder.

6. A toner cartridge powder knife according to claim 1, characterized in that: The blocking cover position locking structures are provided with two and are located on both sides of the tool holder.

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