CN219778103U - Fixing structure for avoiding bending deformation of scraper along with temperature change and processing box thereof - Google Patents
Fixing structure for avoiding bending deformation of scraper along with temperature change and processing box thereof Download PDFInfo
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- CN219778103U CN219778103U CN202320968168.6U CN202320968168U CN219778103U CN 219778103 U CN219778103 U CN 219778103U CN 202320968168 U CN202320968168 U CN 202320968168U CN 219778103 U CN219778103 U CN 219778103U
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- scraper
- blade
- along
- fixing structure
- shell
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- 238000005452 bending Methods 0.000 title claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 17
- 239000002699 waste material Substances 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 241000309551 Arthraxon hispidus Species 0.000 claims description 2
- 230000008646 thermal stress Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 238000007599 discharging Methods 0.000 description 12
- 238000007639 printing Methods 0.000 description 6
- 239000002390 adhesive tape Substances 0.000 description 4
- 238000004880 explosion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Cleaning In Electrography (AREA)
Abstract
The utility model discloses a fixing structure for avoiding bending deformation of a scraper along with temperature change and a processing box thereof, comprising the scraper and a shell for fixing the scraper; the scraper comprises a blade and a knife rest, wherein the blade is arranged along the long side direction of the knife rest and is fixed on one end edge of the knife rest extending towards the outer edge of the side edge along the long side direction; the two ends of the tool rest are respectively provided with a locking mounting hole used for locking and mounting the scraper on the shell through a screw, and the shell is respectively provided with a threaded connecting hole corresponding to the locking mounting holes; the periphery of the locking mounting hole at one end of the tool rest is also provided with at least one accommodating groove, and each accommodating groove is internally provided with at least one round ball with the top side in rolling sliding connection with the lower end surface of the tool rest; when the environment temperature is extreme or the scraper deforms due to the friction heating thermal stress of the blade for a long time, the locking force of the screw on the tool rest and the round ball is overcome, the tool rest adaptively moves outwards along the long side direction to avoid the bending deformation of the blade, and the thermal deformation of the blade is effectively avoided.
Description
[ field of technology ]
The utility model relates to the technical field of printing consumables, in particular to a fixing structure for preventing a scraper from bending deformation along with temperature change and a processing box thereof.
[ background Art ]
An electrophotographic apparatus is an apparatus for forming an image on a recording material using an electrophotographic process, and includes an electrophotographic copying machine, an electrophotographic printer, an electrophotographic facsimile machine, and the like. A process cartridge for use in an electronic image forming apparatus includes a unit cartridge of a developing roller and a photosensitive drum as developing means, the process cartridge being detachably mountable to a main body of the electronic image forming apparatus.
The developing roller adsorbs the carbon powder in the carbon powder bin on the surface of the developing roller through an electrostatic adsorption principle. Before the carbon powder on the developing roller is transferred onto the photosensitive drum, the carbon powder on the surface of the developing roller needs to be adjusted to a proper thickness by a powder discharging scraper, and when the developing roller is in operation, the blade of the powder discharging scraper elastically contacts the peripheral surface of the developing roller along the axial direction of the developing roller so as to ensure the developing uniformity.
Before the photosensitive drum is reused, the last working process of the photosensitive drum causes the surface of the photosensitive drum to remain residual potential, and a small amount of carbon powder can be remained on the surface of the photosensitive drum due to the attraction of the residual potential to the carbon powder. Only the residual potential and the residual carbon powder are eliminated, so that the transfer efficiency can be improved. Therefore, cleaning and power removal of the photosensitive drum are required. The power dissipation is usually performed by pre-exposure, and the cleaning is usually performed by a cleaning blade. When the cleaning device works, the blade of the cleaning scraper is clung to the peripheral surface of the photosensitive drum along the axial direction of the photosensitive drum, and in the rotating process of the photosensitive drum, the cleaning scraper scrapes off residual carbon powder on the surface of the photosensitive drum, and the residual carbon powder falls into the waste powder bin.
In the processing box of printing consumables, the powder discharging scraper and the cleaning scraper are composed of a knife rest and a blade fixed on the knife rest, and the powder discharging scraper and the cleaning scraper are collectively called as a scraper.
However, in the prior art, during the use process of the processing box, the long-time use of the cleaning scraper or the powder discharging scraper is easy to cause the blade to generate heat with the developing roller and the photosensitive drum respectively, so that the blade of the scraper and the knife rest are bent and deformed due to temperature change, and the blade cannot be effectively clung to the circumferential surface of the photosensitive drum or the developing roller along the axial direction, thereby further affecting the cleaning of residual carbon powder on the photosensitive drum and the uniform powder discharging of the surface of the developing roller; therefore, the deformation caused by temperature change in the long-time use process of the scraper is overcome in the structural design, the self-adaptive adjustment and the bending deformation prevention of the cleaning scraper or the powder discharging scraper are ensured, and the reliability in the use process is effectively improved.
[ utility model ]
The utility model provides a fixing structure for preventing a scraper from bending deformation along with temperature change and a processing box thereof, which enable a cleaning scraper or a powder discharging scraper to be self-adaptively fine-adjusted along with temperature change through a sliding connection structure with a certain pretightening force at the end part, avoid the bending deformation of the blade and effectively improve the reliability in the use process.
The technical scheme adopted for solving the technical problems is as follows:
a fixing structure for preventing a scraper from bending deformation along with temperature change comprises the scraper and a shell for fixedly mounting the scraper;
the scraper comprises a blade and a knife rest, wherein the blade is arranged along the long side direction of the knife rest and is fixed on one end edge extending to the outer edge of the side edge along the long side direction of the knife rest;
the two ends of the tool rest are respectively provided with a locking mounting hole used for locking and mounting the scraper on the shell through screws, and the shell is respectively provided with a threaded connecting hole corresponding to the locking mounting holes;
the periphery of the locking mounting hole at one end of the tool rest is also provided with at least one accommodating groove, and each accommodating groove is internally provided with at least one round ball with the diameter higher than the groove depth of the accommodating groove and the top side in rolling sliding connection with the lower end surface of the tool rest; when the environment temperature is extreme or the scraper deforms due to the friction heating thermal stress of the blade for a long time, the locking force of the screw on the tool rest and the round ball is overcome, the tool rest adaptively moves outwards along the long side direction to avoid the bending deformation of the blade, and the thermal deformation of the blade is effectively avoided.
Preferably, two symmetrically arranged containing grooves are formed in two sides of the periphery of the locking mounting hole at one end of the tool rest, and three round balls which are arranged side by side are respectively arranged in each containing groove.
Preferably, a fool-proof limiting hole which is convenient for a production line worker to identify the installation direction of the scraper and prevent the scraper installation direction from being reversed and misplaced is further formed beside the locking installation hole at the other end of the tool rest, and a fool-proof positioning column matched with the fool-proof limiting hole is arranged on the corresponding shell.
Preferably, the two ends of the knife rest are respectively provided with an open butt joint groove or a convex butt joint head for butt joint positioning of the scraper and the two ends of the shell.
A process cartridge comprising a drum assembly comprising a waste bin and a photosensitive drum; the fixing structure for preventing the scraper from bending deformation along with temperature change is arranged on the waste powder bin, and the blade of the scraper elastically contacts the peripheral surface of the photosensitive drum along the axial direction of the photosensitive drum.
A process cartridge comprising a developing assembly including a powder feeding hopper and a developing roller; the fixing structure for preventing the scraper from bending deformation along with temperature change is arranged at the outlet of the powder feeding bin, and the blade of the scraper elastically contacts the peripheral surface of the developing roller along the axial direction of the developing roller.
The beneficial effects of the utility model are as follows:
the scraper is an adhesive tape type scraper in the field of the prior printing consumables, and the blade fixed on the knife rest is an adhesive tape. In the using process of the scraper, one end edge of the adhesive tape is fixed on the knife rest, the other end edge of the adhesive tape stretches out in a cantilever shape, the stretched end edge is kept in elastic contact with the developing roller or the photosensitive drum, and under the resistance action of carbon powder adsorbed on the surface of the developing roller or the photosensitive drum, after the scraper is used for a long time, the blade of the scraper is easy to generate heat due to friction heat, so that the blade of the scraper and the knife rest are bent and deformed due to temperature change, and the blade cannot be effectively clung to the circumferential surface of the photosensitive drum or the developing roller along the axial direction; therefore, the carbon powder on the surface of the developing roller cannot be uniformly scraped to a proper thickness or the residual carbon powder on the surface of the photosensitive drum cannot be cleaned, and the printing quality is seriously affected.
According to the utility model, the accommodating groove is formed in the periphery of a locking mounting hole at one end of the tool rest, a plurality of round balls with the diameter higher than the groove depth of the accommodating groove and the top side in rolling sliding connection with the lower end surface of the tool rest are arranged in the accommodating groove, and a fool-proof limiting hole and a fool-proof positioning column for limiting the movement of the end part of the scraper and preventing the reverse installation of the scraper are arranged between the other end of the tool rest and the shell; when the environment temperature is extreme or the scraper is deformed due to the fact that the blade is in friction heating thermal stress for a long time, one end of the cutter frame is limited by the foolproof positioning column and then is not movable, the locking force of the screw on the cutter frame and the round ball is overcome through the thermal stress deformation of the cutter frame, the cutter frame is self-adaptively moved outwards along the long side to avoid the bending deformation of the blade, the extending end side is prevented from being overturned to deviate from the surface of the developing roller or the photosensitive drum, the self-adaptively adjusted deformation amount of the scraper is realized when the scraper is used for a long time, and the printing quality is effectively ensured.
[ description of the drawings ]
FIG. 1 is a schematic view of an explosion structure in a first embodiment of the utility model;
fig. 2 is an enlarged schematic view of the a portion structure in fig. 1.
FIG. 3 is a schematic cross-sectional assembly structure of a cleaning blade and a waste bin at a photosensitive drum according to an embodiment of the utility model;
fig. 4 is an enlarged schematic view of the B-section structure in fig. 3.
FIG. 5 is a schematic perspective view of a developing roller, a powder discharge scraper and a powder discharge bin according to a second embodiment of the present utility model;
FIG. 6 is a schematic diagram of an explosion structure in a second embodiment of the present utility model;
fig. 7 is an enlarged schematic view of the C-section structure in fig. 6.
[ detailed description ] of the utility model
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
The fixing structure for preventing the scraper from bending deformation along with temperature change is arranged at a waste powder bin shell 1 of a processing box as shown in fig. 1 to 4 and comprises a scraper 2 and the waste powder bin shell 1 for fixedly arranging the scraper 2; the doctor blade 2 comprises a blade 20 and a blade holder 21, wherein the blade 20 is arranged along the long side direction of the blade holder 21 and is fixed on one end edge of the blade holder 21 extending towards the outer edge of the side; locking mounting holes 3 for locking and mounting the scraper 2 on the waste powder bin shell 1 through screws (not shown) are respectively arranged at two ends of the tool rest 21, and threaded connecting holes 4 corresponding to the locking mounting holes 3 are respectively arranged on the waste powder bin shell 1; two symmetrically arranged containing grooves 5 are formed in two sides of the periphery of a locking mounting hole 3 at one end of the tool rest 21, and three round balls 6 which are arranged in parallel and have a diameter higher than the groove depth of the containing grooves 5 and are in rolling sliding contact with the lower end surface of the tool rest 21 are arranged in each containing groove 5; when the ambient temperature is extreme or the scraper 2 deforms due to the friction heating thermal stress of the blade 20 for a long time, the locking force of the screw on the knife rest 21 and the round ball 6 is overcome, and the knife rest 21 adaptively moves outwards along the long side direction to avoid the bending deformation of the blade 20, so that the thermal deformation of the blade 20 is effectively avoided.
Furthermore, as shown in fig. 1 to 4, a fool-proof limiting hole 7 which is convenient for a production line worker to identify the installation direction of the scraper 2 and prevent the reverse dislocation of the installation direction of the scraper 2 is arranged beside the locking installation hole 3 at the other end of the tool rest 21, and a fool-proof positioning column 8 matched with the fool-proof limiting hole 7 is arranged on the corresponding waste powder bin shell 1; in this way, the fool-proof positioning column 8 not only prevents the dislocation installation of the scraper 2, but also plays a role in limiting the lateral movement of the end part of the scraper 2. In addition, open butt joint grooves 9 for butt joint positioning of the scraper 22 and the two ends of the waste powder bin shell 1 are respectively arranged at the two ends of the knife rest 21, and positioning blocks 10 matched with the open butt joint grooves 9 are respectively arranged at the two ends of the waste powder bin shell 1.
In this embodiment, the process cartridge thereof includes a drum assembly including a waste bin housing 1 and a photosensitive drum 11; a fixing structure for preventing the doctor blade 2 from being bent and deformed by a change in temperature is mounted on the waste toner hopper case 1, the doctor blade 2 in this example being a cleaning blade, and the blade 20 of the cleaning blade elastically contacts the peripheral surface of the photosensitive drum 11 in the axial direction of the photosensitive drum 11.
Example two
As shown in fig. 5 to 7, the difference between the embodiment and the first embodiment is that the fixing structure is installed at the powder feeding bin housing 12 of the processing box, and the powder feeding bin housing 12 is sealed 120 by a powder feeding cover buckle cover; the fixing structure is suitable for fixing and installing the powder discharging scraper, and the two ends of the knife rest 21 of the powder discharging scraper 2 are respectively provided with a convex butt joint 1 3 for butt joint positioning of the scraper 2 and the two ends of the powder feeding bin shell 12; in this embodiment, two symmetrically arranged accommodating grooves 5 are also formed on two sides of the periphery of the locking mounting hole 3 at one end of the knife rest 21 of the powder discharge scraper 2, three round balls 6 which are arranged in parallel and have a diameter higher than the groove depth of the accommodating grooves 5 and are in rolling sliding contact with the lower end surface of the knife rest 21 are arranged in each accommodating groove 5, and in the long-time use process, the knife rest 21 of the powder discharge scraper 2 is self-adaptively moved outwards along the long-side direction to avoid bending deformation of the blade 20, so that thermal deformation of the blade 20 is effectively avoided.
In this embodiment, the process cartridge thereof includes a developing assembly including a hopper housing 12, a developing roller 14, and a toner feeding roller 15; a fixing structure for preventing the scraper from bending deformation along with the temperature change is arranged at the outlet of the powder feeding bin shell 12, the scraper 2 is a powder discharging scraper in the example, and the blade 20 of the powder discharging scraper 2 elastically contacts the peripheral surface of the developing roller 14 along the axial direction of the developing roller 14; in addition, in this embodiment, the fool-proof structure matched with the fool-proof positioning column 8 is an open slot 80 formed at the lower edge of the end of the tool rest 21.
In the two embodiments, three parallel round balls in the accommodating groove are contacted with the bottom surface of the knife rest, when the ambient temperature is extreme or the knife blade is deformed under thermal stress, one end of the knife rest of the scraper is self-adaptively moved outwards along the long side, the knife blade is effectively contacted with the photosensitive drum or the developing roller, and the printing quality of the printer is stable and reliable when the printer is used for a long time.
The above embodiments are merely preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, but all equivalent changes according to the shape, construction and principle of the present utility model are intended to be included in the scope of the present utility model.
Claims (6)
1. The fixing structure for preventing the scraper from bending deformation along with temperature change is characterized by comprising the scraper and a shell for fixedly mounting the scraper;
the scraper comprises a blade and a knife rest, wherein the blade is arranged along the long side direction of the knife rest and is fixed on one end edge extending to the outer edge of the side edge along the long side direction of the knife rest;
the two ends of the tool rest are respectively provided with a locking mounting hole used for locking and mounting the scraper on the shell through screws, and the shell is respectively provided with a threaded connecting hole corresponding to the locking mounting holes;
the periphery of the locking mounting hole at one end of the tool rest is also provided with at least one accommodating groove, and each accommodating groove is internally provided with at least one round ball with the diameter higher than the groove depth of the accommodating groove and the top side in rolling sliding connection with the lower end surface of the tool rest.
2. A fixing structure for avoiding bending deformation of a doctor blade according to claim 1, wherein: two symmetrically arranged containing grooves are formed in two sides of the periphery of the locking mounting hole at one end of the tool rest, and three round balls which are arranged side by side are respectively arranged in each containing groove.
3. A fixing structure for avoiding bending deformation of a doctor blade according to claim 1, wherein: the novel scraper knife is characterized in that fool-proof limiting holes which are convenient for a production line worker to identify the installation direction of the scraper and prevent the scraper from being staggered due to the reverse installation direction are further formed beside the locking installation holes at the other end of the knife rest, and fool-proof positioning columns matched with the fool-proof limiting holes are arranged on the corresponding shell.
4. A fixing structure for avoiding bending deformation of a doctor blade according to claim 1, wherein: the two ends of the knife rest are respectively provided with an open butt joint groove or a convex butt joint head for butt joint positioning of the scraper and the two ends of the shell.
5. A process cartridge comprising a drum assembly comprising a waste bin and a photosensitive drum; a fixing structure for preventing the scraper from bending and deforming along with the change of temperature is arranged on the waste powder bin, and the blade of the scraper elastically contacts the peripheral surface of the photosensitive drum along the axial direction of the photosensitive drum.
6. A process cartridge comprising a developing assembly including a powder feeding hopper and a developing roller; a fixing structure for preventing the doctor blade from bending and deforming along with the change of temperature is arranged at the outlet of the powder feeding bin, and the blade of the doctor blade elastically contacts the peripheral surface of the developing roller along the axial direction of the developing roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320968168.6U CN219778103U (en) | 2023-04-25 | 2023-04-25 | Fixing structure for avoiding bending deformation of scraper along with temperature change and processing box thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320968168.6U CN219778103U (en) | 2023-04-25 | 2023-04-25 | Fixing structure for avoiding bending deformation of scraper along with temperature change and processing box thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219778103U true CN219778103U (en) | 2023-09-29 |
Family
ID=88108435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320968168.6U Active CN219778103U (en) | 2023-04-25 | 2023-04-25 | Fixing structure for avoiding bending deformation of scraper along with temperature change and processing box thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219778103U (en) |
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2023
- 2023-04-25 CN CN202320968168.6U patent/CN219778103U/en active Active
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