Metal doctor blade of printer

Abstract

The utility model relates to the technical field of printer accessory design and manufacturing, and discloses a printer metal doctor blade which comprises a doctor blade body, shells are fixed to the two ends of one side of the doctor blade body, and rotating rods are rotationally arranged in the shells in a penetrating mode. According to the metal doctor blade of the printer, when the doctor blade body needs to be installed, a selenium drum is placed on one side of the doctor blade body, a rotary knob is pulled to drive a square rod to move outwards, an inserting rod is separated from the interior of an inserting groove, at the moment, the rotary knob can be rotated, and the square rod is matched with a square groove formed in a rotating rod; and a square rod and a rotating rod rotate together, a limiting plate is driven to rotate, a movable plate is extruded, the movable plate pushes the limiting rod to be inserted into the selenium drum, then a rotary knob is pushed to drive an inserting rod to be inserted into an inserting groove, the doctor blade body is rapidly installed and fixed, the structure is compact, operation is convenient, and the operation efficiency of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of design and manufacturing of printer accessories, in particular to a metal powder discharge knife for a printer. Background Art

[0002] The metal powder knife of the printer is mainly related to the working principle of the toner cartridge of the laser printer. The main function of the powder knife is to cooperate with the magnetic roller to control the thickness of the toner layer on the surface of the magnetic roller sleeve, and to rub with the magnetic roller sleeve to make the toner frictionally charged. Its structure is usually to use polyurethane material to make the metal blade on the metal tool holder. It needs to have excellent structure, straight metal tool holder, accurate positioning holes, no rust on the surface, straight rubber blade without deformation, no gaps and bubbles and other technical characteristics.

[0003] The existing metal powder cutter of the printer is easy to stick toner during use, causing the printing to be invisible, so it needs to be cleaned frequently. Since the powder cutter is fixed to the toner cartridge by screws, frequent disassembly and assembly may cause the screw threads to fail to bite, resulting in unstable fixation. Utility Model Content

[0004] The technical problem to be solved by the utility model is that in the prior art, a powder discharge knife is fixed to the toner cartridge by screws, and frequent disassembly and assembly may cause the phenomenon that the screw threads cannot bite, resulting in unstable fixation. For this reason, we propose a metal powder discharge knife for a printer.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a metal powder knife for a printer, comprising a powder knife body, a shell is fixed at both ends of one side of the powder knife body, a rotating rod passes through the interior of the shell and rotates, a limiting plate is fixed at one end of the rotating rod located inside the shell, the limiting plate is elliptical, a movable plate is slidably connected to the interior of the shell, a limiting rod is fixed to one side of the movable plate, a through groove is opened at one end of the shell, and the interior of the through groove is slidably connected to the limiting rod.

[0006] Preferably, the difference between the maximum diameter and the minimum diameter of the limiting plate is greater than the distance that the limiting rod passes through the through slot.

[0007] Preferably, first springs are fixed on both sides of one end inside the shell, and the other end of the first spring is fixed to the moving plate.

[0008] Preferably, first sliding grooves are provided on both sides of the interior of the shell, a first sliding block is slidably connected inside the first sliding groove, and the other end of the first sliding block is fixed to the moving plate.

[0009] Preferably, a square rod is slidably connected inside the rotating rod, a knob is fixed to one end of the square rod, an insertion rod is fixed to the end of the knob close to the shell, a slot is opened on one side of the shell, and the inside of the slot is sleeved with the insertion rod.

[0010] Preferably, second sliding grooves are provided on both sides of the rotating rod, a second sliding block is slidably connected inside the second sliding groove, and the other end of the second sliding block is fixed to the square rod.

[0011] Preferably, a second spring is fixed inside the rotating rod, and the other end of the second spring is fixed to the square rod.

[0012] Technical effects and advantages of the utility model:

[0013] In the utility model, when the powder knife body needs to be installed, the toner cartridge is placed on one side of the powder knife body, and the square rod is driven to move outward by pulling the knob to make the insertion rod disengage from the interior of the slot. At this time, the knob can be turned, and the square rod is matched with the square groove provided in the rotating rod to make the square rod and the rotating rod rotate together, and drive the limit plate to rotate, squeeze the moving plate, so that the moving plate pushes the limit rod to insert into the interior of the toner cartridge, and then push the knob to drive the insertion rod to insert into the interior of the slot, so as to realize the rapid installation and fixation of the powder knife body, with compact structure, convenient operation and improved user operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the shell of the utility model;

[0016] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixing mechanism of the utility model;

[0018] Figure 5 For this utility model Figure 4 A partial enlarged view of point B in the middle.

[0019] Legend: 1. Powder knife body; 2. Shell; 3. Rotating rod; 4. Limiting plate; 5. Moving plate; 6. Limiting rod; 7. Through slot; 8. First spring; 9. First slide slot; 10. First slider; 11. Square rod; 12. Knob; 13. Insert rod; 14. Slot; 15. Second slide slot; 16. Second slider; 17. Second spring. DETAILED DESCRIPTION

[0020] The present invention will now be further described in detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] Reference Figure 1 - Figure 5 As shown, the utility model provides a technical solution: a metal powder knife for a printer, comprising a powder knife body 1, a shell 2 is fixed at both ends of one side of the powder knife body 1, a rotating rod 3 is rotatably penetrated inside the shell 2, a limiting plate 4 is fixed at one end of the rotating rod 3 located inside the shell 2, the limiting plate 4 is elliptical, a moving plate 5 is slidably connected inside the shell 2, a limiting rod 6 is fixed on one side of the moving plate 5, a through groove 7 is provided at one end of the shell 2, the inside of the through groove 7 is slidably connected to the limiting rod 6, a first spring 8 is fixed on both sides of one end inside the shell 2, the other end of the first spring 8 is fixed to the moving plate 5, a square rod 11 is slidably connected inside the rotating rod 3, a knob 12 is fixed at one end of the square rod 11, and an insertion rod 13 is fixed at the end of the knob 12 close to the shell 2 A slot 14 is provided on one side of the shell 2, and the interior of the slot 14 is sleeved with the insertion rod 13. When the powder knife body 1 needs to be installed, the toner cartridge is placed on one side of the powder knife body 1, and the square rod 11 is driven to move outward by pulling the knob 12, so that the insertion rod 13 is disengaged from the interior of the slot 14. At this time, the knob 12 can be rotated, and the square rod 11 is matched with the square groove provided inside the rotating rod 3 to make the square rod 11 and the rotating rod 3 rotate together, and drive the limiting plate 4 to rotate, squeeze the moving plate 5, so that the moving plate 5 pushes the limiting rod 6 to insert into the interior of the toner cartridge, and then pushes the knob 12 to drive the insertion rod 13 to insert into the interior of the slot 14, so as to realize the rapid installation and fixation of the powder knife body 1, with a compact structure, convenient operation, and improved user operation efficiency.

[0022] Reference Figure 1 - Figure 5 As shown, in the present embodiment: the difference between the maximum diameter and the minimum diameter of the limit plate 4 is greater than the distance that the limit rod 6 passes through the through slot 7. By designing the difference between the maximum diameter and the minimum diameter of the limit plate 4 to be greater than the distance that the limit rod 6 passes through the through slot 7, it is possible to ensure that the moving distance of the movable plate 5 is sufficient to allow the limit rod 6 to be separated from the interior of the toner cartridge, making disassembly easier.

[0023] Reference Figure 1 - Figure 3 As shown, in this embodiment: a first slide groove 9 is opened on both sides of the shell 2, and a first slider 10 is slidably connected inside the first slide groove 9, and the other end of the first slider 10 is fixed to the movable plate 5. By setting the structure of the first slide groove 9 and the first slider 10, the moving direction of the movable plate 5 can be restricted to avoid tilting.

[0024] Reference Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment: second sliding grooves 15 are opened on both sides of the interior of the rotating rod 3, and the interior of the second sliding grooves 15 is slidably connected with a second slider 16, and the other end of the second slider 16 is fixed to the square rod 11. By setting the structure of the second sliding grooves 15 and the second slider 16, the moving trajectory of the square rod 11 can be restricted to prevent the user from using too much force when pulling the knob 12, causing the square rod 11 to escape from the interior of the rotating rod 3.

[0025] Reference Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment: a second spring 17 is fixed inside the rotating rod 3, and the other end of the second spring 17 is fixed to the square rod 11. By providing the second spring 17, the force of the second spring 17 can be used to constrain the position of the insertion rod 13, and at the same time, manpower is saved when fixing the knob 12.

[0026] Working principle: when the user needs to install the powder knife body 1, he places the toner cartridge on one side of the powder knife body 1, and pulls the knob 12 to drive the square rod 11 to move outward, so that the insertion rod 13 is out of the slot 14. At this time, the knob 12 can be turned, and the square rod 11 is matched with the square groove opened in the rotating rod 3 to make the square rod 11 and the rotating rod 3 rotate together, and drive the limit plate 4 to rotate, squeeze the moving plate 5, so that the moving plate 5 pushes the limit rod 6 to insert into the interior of the toner cartridge, and then pushes the knob 12 to drive the insertion rod 13 to insert into the slot 14, so as to realize the quick installation and fixation of the powder knife body 1. The structure is compact and easy to operate, which improves the user's operating efficiency. By moving the limit plate 4 The difference between the maximum diameter and the minimum diameter is designed to be greater than the distance that the limit rod 6 passes through the through slot 7, which can ensure that the moving distance of the movable plate 5 can make the limit rod 6 escape from the interior of the toner cartridge, and is convenient for disassembly. By setting the structure of the first slide groove 9 and the first slider 10, the moving direction of the movable plate 5 can be restricted to avoid tilting. By setting the structure of the second slide groove 15 and the second slider 16, the moving trajectory of the square rod 11 can be restricted to prevent the user from using too much force when pulling the knob 12, causing the square rod 11 to escape from the interior of the rotating rod 3. By setting the second spring 17, the force of the second spring 17 can be used to constrain the position of the insertion rod 13, and at the same time, manpower is saved when fixing the knob 12.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal powder knife for a printer, comprising a powder knife body (1), characterized in that: A shell (2) is fixed at both ends of one side of the powder discharging knife body (1); a rotating rod (3) is inserted and rotated inside the shell (2); a limit plate (4) is fixed at one end of the rotating rod (3) located inside the shell (2); the limit plate (4) is elliptical; a movable plate (5) is slidably connected inside the shell (2); a limit rod (6) is fixed on one side of the movable plate (5); a through groove (7) is provided at one end of the shell (2); the interior of the through groove (7) is slidably connected to the limit rod (6).

2. A metal powder knife for a printer according to claim 1, characterized in that: The difference between the maximum diameter and the minimum diameter of the limiting plate (4) is greater than the distance that the limiting rod (6) passes through the through slot (7).

3. A metal powder knife for a printer according to claim 1, characterized in that: A first spring (8) is fixed on both sides of one end inside the shell (2), and the other end of the first spring (8) is fixed to the moving plate (5).

4. A metal powder knife for a printer according to claim 1, characterized in that: First sliding grooves (9) are provided on both sides of the shell (2), and a first sliding block (10) is slidably connected inside the first sliding groove (9), and the other end of the first sliding block (10) is fixed to the movable plate (5).

5. A metal powder knife for a printer according to claim 1, characterized in that: The interior of the rotating rod (3) is slidably connected to a square rod (11); a knob (12) is fixed to one end of the square rod (11); an insertion rod (13) is fixed to the end of the knob (12) close to the housing (2); a slot (14) is provided on one side of the housing (2); the interior of the slot (14) is sleeved with the insertion rod (13).

6. A metal powder knife for a printer according to claim 1, characterized in that: Second sliding grooves (15) are provided on both sides of the rotating rod (3), and a second sliding block (16) is slidably connected inside the second sliding groove (15), and the other end of the second sliding block (16) is fixed to the square rod (11).

7. A metal powder knife for a printer according to claim 1, characterized in that: A second spring (17) is fixed inside the rotating rod (3), and the other end of the second spring (17) is fixed to the square rod (11).

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