CN113443265A - Gate structure of carbon powder box - Google Patents
Gate structure of carbon powder box Download PDFInfo
- Publication number
- CN113443265A CN113443265A CN202110748058.4A CN202110748058A CN113443265A CN 113443265 A CN113443265 A CN 113443265A CN 202110748058 A CN202110748058 A CN 202110748058A CN 113443265 A CN113443265 A CN 113443265A
- Authority
- CN
- China
- Prior art keywords
- toner cartridge
- discharge port
- gate structure
- outlet
- support frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 7
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/38—Devices for discharging contents
- B65D25/40—Nozzles or spouts
- B65D25/42—Integral or attached nozzles or spouts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0006—Upper closure
- B65D2251/0025—Upper closure of the 47-type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0068—Lower closure
- B65D2251/0087—Lower closure of the 47-type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
The invention discloses a toner cartridge gate structure which comprises a toner cartridge, a toner cartridge gate structure, a discharge port sealing element and a buckle seat, wherein a toner cartridge discharge port is formed in the outer wall of the toner cartridge, the toner cartridge gate structure comprises a support frame, a clamping groove is formed in the side edge of the support frame, a push rod is connected to the inner side of the clamping groove in a sliding mode, a rotating shaft is rotatably connected to the position, close to the middle, inside of the support frame, a matching shaft is rotatably connected to the position, close to one end, inside of the support frame, a flexible belt is connected between the rotating shaft and the matching shaft, a fixed discharge port is formed in the position, close to one end, of the lower surface of the support frame, and the buckle seat is fixedly installed on the inner side edge of the support frame. According to the toner cartridge gate structure, the push rod is provided with the clamping portion and the rack portion, the clamping portion and the rack portion are integrally connected, and the problem that carbon powder is prone to leaking from a powder outlet joint when a toner cartridge is loaded and unloaded is solved.
Description
Technical Field
The invention relates to the field of gate structures, in particular to a carbon powder box gate structure.
Background
In the image forming device, the carbon powder is a material for forming images, the carbon powder box is a container for storing the carbon powder, when the amount of the carbon powder in the developing device is less than a specified amount, the carbon powder is supplemented to the developing device from the carbon powder box, a carbon powder outlet is arranged on the carbon powder box, the carbon powder is supplemented to the developing device from the outlet, and the outlet of the carbon powder box is opened and closed through a sliding type gate component;
however, the gate plate of the existing discharge port is generally made of plastic or metal, and the gate is designed to have a thicker thickness in order to ensure the strength of the gate plate through sliding opening and closing, so that a larger space is formed at the discharge port of the gate plate, a great amount of carbon powder is retained in the space, and the carbon powder can leak out when the gate plate is opened and closed, thereby causing waste and environmental pollution.
Disclosure of Invention
The invention mainly aims to provide a toner cartridge gate structure which can effectively solve the problems in the background technology that: the existing gate plate of the outlet is generally made of plastic or metal, and the gate is designed to have a thicker thickness in order to ensure the strength of the gate plate by sliding opening and closing, so that a larger space is arranged at the outlet of the gate plate, a great amount of carbon powder is retained in the space, and the carbon powder can leak out when the gate plate is opened and closed, thereby causing the technical problems of waste and environmental pollution.
In order to achieve the purpose, the invention adopts the technical scheme that:
cartridge gate structure, including cartridge, cartridge gate structure, discharge port sealing member and knot seat, the cartridge discharge port has been seted up to the outer wall of cartridge, cartridge gate structure includes the support frame, the block groove has been seted up to the side of support frame, the inboard sliding connection in block groove has the push rod, the inside of support frame is close to the intermediate position and rotates and be connected with the rotation axis, the inside of support frame is close to one end position and rotates and be connected with the cooperation axle, be connected with the flexible band between rotation axis and the cooperation axle, the lower surface of support frame is close to one end position and has seted up fixed discharge port, detain seat fixed mounting at the inside side of support frame.
In a further aspect of the present invention, the push rod includes an engaging portion integrally connected to the rack portion and a rack portion engaged with the engaging groove.
As a further scheme of the invention, the outer surface of the flexible belt is provided with a first discharge port, a second discharge port and seven bayonets.
In a further aspect of the present invention, a protrusion is fixedly attached to an outer portion of the rotary shaft near a middle position, and a gear portion is fixedly attached to one end of the rotary shaft.
In a further aspect of the present invention, the projection portion is engaged with a bayonet, and the gear portion is engaged with a rack portion.
As a further scheme of the invention, the support frame is connected with the toner cartridge in a clamping way through the buckle seat.
As a further scheme of the invention, the outlet sealing piece is fixedly connected to the inner wall of the toner cartridge outlet, and the toner cartridge outlet vertically corresponds to the fixed outlet.
As a further scheme of the invention, the thickness of the flexible belt is between 0.05 and 0.2 cm.
As a further scheme of the invention, the toner cartridge gate structure specifically comprises the following steps when in use:
the method comprises the following steps: the support frame is connected with the toner cartridge in a clamping manner through the buckle seat, and the outlet sealing piece is arranged inside the outlet of the toner cartridge while the support frame is clamped with the toner cartridge;
step two: after the flexible belt is installed, the outlet sealing piece is positioned between the flexible belt and the outlet of the toner cartridge, when the flexible belt is in work, the push rod slides to drive the rotating shaft to rotate and drive the protrusion part outside the rotating shaft to rotate, and the protrusion part drives the flexible belt to rotate through the matching shaft through the bayonet;
step three: the gear part rotates simultaneously when the rotating shaft rotates, is in meshed connection with the rack part in the rotating process, and is matched with the rack part to receive the force of the push rod so as to rotate in a specified direction;
step four: when the flexible belt rotates to the position that the first outlet is overlapped with the second outlet, carbon powder in the carbon powder box is discharged through the carbon powder box outlet, the first outlet, the second outlet and the fixed outlet in sequence;
step five: when the flexible belt rotates to the first discharge port and the second discharge port to be staggered, the discharge port of the toner cartridge is blocked, so that the toner cannot be discharged, and the purpose of controlling the circulation of the toner is achieved.
Compared with the prior art, the invention has the following beneficial effects:
through the carbon powder discharge port of the carbon powder box, paste in the discharge port sealing member of powder outlet department, can close and open the flexible band of carbon powder box discharge port, drive the rotatory rotation axis of flexible band, when the flexible band rotates to first discharge port and second discharge port coincidence, carbon powder in the carbon powder box loops through the carbon powder box discharge port, first discharge port, second discharge port and fixed discharge port are discharged, when the flexible band rotates to first discharge port and second discharge port stagger, the carbon powder box discharge port is blocked, make the unable discharge of carbon powder, reach the purpose of control carbon powder circulation, the problem of the carbon powder spills from the discharge port junction easily when having solved the dress and having got the carbon powder box.
Drawings
FIG. 1 is a perspective view of a toner cartridge of the shutter structure of the toner cartridge of the present invention;
FIG. 2 is an exploded view of a toner cartridge gate structure of the present invention;
FIG. 3 is a perspective view of a toner cartridge gate structure of the present invention;
FIG. 4 is a schematic view of the toner cartridge gate structure of the present invention as it opens;
FIG. 5 is a cross-sectional view of the toner cartridge gate structure of the present invention as it opens;
FIG. 6 is a schematic representation of the toner cartridge gate structure of the present invention when closed;
FIG. 7 is a cross-sectional view of the toner cartridge gate structure of the present invention as closed;
FIG. 8 is a perspective view of a support frame of the toner cartridge gate structure of the present invention;
FIG. 9 is a perspective view of a push rod of the toner cartridge gate structure of the present invention;
fig. 10 is a superimposed representation of the first outlet and the second outlet of the flexible strip of the toner cartridge gate structure of the present invention;
figure 11 is a staggered representation of the first outlet and the second outlet of the flexible strip of the cartridge shutter configuration of the present invention;
FIG. 12 is a perspective view of the rotating shaft of the shutter structure of the toner cartridge of the present invention;
in the figure: 1. a toner cartridge; 2. a cartridge gate structure; 3. a toner cartridge outlet; 4. a support frame; 5. a rotating shaft; 6. a push rod; 7. a flexible band; 8. an exhaust port seal; 9. a mating shaft; 10. a fixed discharge port; 11. a clamping groove; 12. a fastening part; 13. a rack portion; 14. a first discharge port; 15. a second discharge port; 16. a bayonet; 17. a protrusion portion; 18. a gear portion; 19. a buckle seat.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-12, the toner cartridge gate structure includes a toner cartridge 1, a toner cartridge gate structure 2, a discharge port sealing member 8 and a retaining seat 19, a toner cartridge discharge port 3 is formed in an outer wall of the toner cartridge 1, the toner cartridge gate structure 2 includes a support frame 4, a clamping groove 11 is formed in a side edge of the support frame 4, a push rod 6 is slidably connected to an inner side of the clamping groove 11, a rotating shaft 5 is rotatably connected to an inner portion of the support frame 4 near a middle position, a matching shaft 9 is rotatably connected to an inner portion of the support frame 4 near one end position, a flexible belt 7 is connected between the rotating shaft 5 and the matching shaft 9, a fixed discharge port 10 is formed in a lower surface of the support frame 4 near one end position, and the retaining seat 19 is fixedly mounted on an inner side edge of the support frame 4;
the push rod 6 is composed of a clamping part 12 and a rack part 13, the clamping part 12 is integrally connected with the rack part 13, and the clamping part 12 is clamped and matched with the clamping groove 11; the outer surface of the flexible belt 7 is provided with a first discharge port 14, a second discharge port 15 and seven bayonets 16, and the number of the bayonets 16 is seven; a projection 17 is fixedly arranged on the outer part of the rotating shaft 5 near the middle position, and a gear part 18 is fixedly arranged at one end of the rotating shaft 5; the projection 17 is engaged with the bayonet 16, and the gear 18 is engaged with the rack 13; the support frame 4 is clamped and connected with the toner cartridge 1 through a buckle seat 19; the outlet sealing member 8 is fixedly connected with the inner wall of the toner cartridge outlet 3, and the toner cartridge outlet 3 vertically corresponds to the fixed outlet 10; the thickness of the flexible strip 7 is between 0.05 and 0.2 cm.
When the toner cartridge gate structure is used, the support frame 4 is clamped with the toner cartridge 1 through the buckle seat 19, the outlet sealing member 8 is arranged inside the toner cartridge outlet 3 while clamping, after the outlet sealing member 8 is installed, the outlet sealing member 8 is positioned between the flexible belt 7 and the toner cartridge outlet 3, when the toner cartridge gate structure is in operation, the push rod 6 slides to drive the rotating shaft 5 to rotate, the protrusion 17 outside the rotating shaft is driven to rotate, the protrusion 17 drives the flexible belt 7 to rotate through the matching shaft 9 through the bayonet 16, the gear part 18 rotates simultaneously while the rotating shaft 5 rotates, the gear part 13 is in gear engagement connection with the rack part 13 in the rotating process, the matching rack part 13 receives the force of the push rod 6 to enable the push rod to rotate in a specified direction, and when the flexible belt 7 rotates until the first outlet 14 is overlapped with the second outlet 15, the carbon powder in the toner cartridge 1 sequentially passes through the toner cartridge outlet 3, The first discharging port 14, the second discharging port 15 and the fixed discharging port 10 are used for discharging, when the flexible belt 7 rotates to the state that the first discharging port 14 and the second discharging port 15 are staggered, the discharging port 3 of the carbon powder box is blocked, so that carbon powder cannot be discharged, and the purpose of controlling the circulation of the carbon powder is achieved.
According to the invention, the flexible belt 7 of the toner cartridge outlet 3 can be closed and opened through the toner cartridge outlet 3 and the outlet sealing member 8 adhered to the toner outlet, the rotating shaft 5 of the flexible belt 7 is driven, when the flexible belt 7 rotates until the first outlet 14 and the second outlet 15 coincide, carbon powder in the toner cartridge 1 is discharged through the toner cartridge outlet 3, the first outlet 14, the second outlet 15 and the fixed outlet 10 in sequence, when the flexible belt 7 rotates until the first outlet 14 and the second outlet 15 are staggered, the toner cartridge 1 outlet is blocked, so that the carbon powder cannot be discharged, the purpose of controlling the circulation of the carbon powder is achieved, and the problem that the carbon powder is easy to leak from the toner outlet joint when the toner cartridge is loaded and unloaded is solved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. Cartridge gate structure, its characterized in that: comprises a toner cartridge (1), a toner cartridge gate structure (2), a discharge port sealing member (8) and a buckle seat (19), the outer wall of the toner cartridge (1) is provided with a toner cartridge outlet (3), the toner cartridge gate structure (2) comprises a support frame (4), a clamping groove (11) is formed in the side edge of the support frame (4), a push rod (6) is connected to the inner side of the clamping groove (11) in a sliding manner, a rotating shaft (5) is rotatably connected in the supporting frame (4) near the middle position, a matching shaft (9) is rotatably connected at a position close to one end inside the supporting frame (4), a flexible belt (7) is connected between the rotating shaft (5) and the matching shaft (9), a fixed discharge port (10) is arranged at the position of the lower surface of the support frame (4) close to one end, the buckle seat (19) is fixedly arranged on the inner side edge of the support frame (4).
2. The toner cartridge gate structure of claim 1, wherein: the push rod (6) is composed of a clamping part (12) and a rack part (13), the clamping part (12) is integrally connected with the rack part (13), and the clamping part (12) is matched with the clamping groove (11) in a clamping mode.
3. The toner cartridge gate structure of claim 1, wherein: the outer surface of the flexible belt (7) is provided with a first discharge port (14), a second discharge port (15) and bayonets (16), and the number of the bayonets (16) is seven.
4. The toner cartridge gate structure of claim 1, wherein: the outer part of the rotating shaft (5) is fixedly provided with a protruding part (17) close to the middle position, and one end of the rotating shaft (5) is fixedly provided with a gear part (18).
5. The toner cartridge shutter structure according to any one of claims 2 to 4, wherein: the protrusion (17) is engaged with a bayonet (16), and the gear portion (18) is engaged with the rack portion (13).
6. The toner cartridge gate structure of claim 1, wherein: the support frame (4) is connected with the toner cartridge (1) in a clamping way through a buckle seat (19).
7. The toner cartridge gate structure of claim 1, wherein: the outlet sealing piece (8) is fixedly connected to the inner wall of the toner cartridge outlet (3), and the toner cartridge outlet (3) vertically corresponds to the fixed outlet (10).
8. The toner cartridge gate structure of claim 1, wherein: the thickness of the flexible belt (7) is 0.05-0.2 cm.
9. The toner cartridge shutter structure according to any one of claims 1 to 8, wherein: the toner cartridge gate structure specifically comprises the following steps when in use:
the method comprises the following steps: the support frame (4) is clamped and connected with the toner cartridge (1) through a buckle seat (19), and the outlet sealing piece (8) is arranged inside the toner cartridge outlet (3) while clamping;
step two: after the installation, the outlet sealing piece (8) is positioned between the flexible belt (7) and the toner cartridge outlet (3), when the toner cartridge outlet is in work, the push rod (6) slides to drive the rotating shaft (5) to rotate and drive the protrusion part (17) outside the rotating shaft to rotate, and the protrusion part (17) drives the flexible belt (7) to rotate through the matching shaft (9) through the bayonet (16);
step three: the gear part (18) rotates simultaneously when the rotating shaft (5) rotates, is in meshed connection with the rack part (13) in the rotating process, and is matched with the rack part (13) to receive the force of the push rod (6) so as to rotate in a specified direction;
step four: when the flexible belt (7) rotates to the state that the first discharge port (14) is overlapped with the second discharge port (15), carbon powder in the carbon powder box (1) is discharged through the carbon powder box discharge port (3), the first discharge port (14), the second discharge port (15) and the fixed discharge port (10) in sequence;
step five: when the flexible belt (7) rotates to the position where the first discharge port (14) and the second discharge port (15) are staggered, the discharge port (3) of the toner cartridge is blocked, so that the toner cannot be discharged, and the purpose of controlling the circulation of the toner is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110748058.4A CN113443265A (en) | 2021-07-02 | 2021-07-02 | Gate structure of carbon powder box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110748058.4A CN113443265A (en) | 2021-07-02 | 2021-07-02 | Gate structure of carbon powder box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113443265A true CN113443265A (en) | 2021-09-28 |
Family
ID=77814750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110748058.4A Pending CN113443265A (en) | 2021-07-02 | 2021-07-02 | Gate structure of carbon powder box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113443265A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207107457U (en) * | 2017-08-22 | 2018-03-16 | 连云港振兴集团石化设备制造有限公司 | A kind of storage tank box-type inner floating disc |
| CN108227437A (en) * | 2016-12-22 | 2018-06-29 | 京瓷办公信息系统株式会社 | Toner container and image forming apparatus |
| CN108519727A (en) * | 2018-06-04 | 2018-09-11 | 珠海天威飞马打印耗材有限公司 | Powder box and the method for opening and closing meal outlet on powder box |
| CN108873648A (en) * | 2018-06-04 | 2018-11-23 | 珠海天威飞马打印耗材有限公司 | Powder box and imaging device |
| US20180346158A1 (en) * | 2017-06-02 | 2018-12-06 | Inline Plastics Corp. | Closure Systems and Methods For Containers |
| CN109258493A (en) * | 2018-11-27 | 2019-01-25 | 中国农业大学 | A kind of rabbit-hutch drawing-in device and its automatic control system |
| CN113031415A (en) * | 2021-03-24 | 2021-06-25 | 珠海天威飞马打印耗材有限公司 | Carbon powder cylinder |
-
2021
- 2021-07-02 CN CN202110748058.4A patent/CN113443265A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108227437A (en) * | 2016-12-22 | 2018-06-29 | 京瓷办公信息系统株式会社 | Toner container and image forming apparatus |
| US20180346158A1 (en) * | 2017-06-02 | 2018-12-06 | Inline Plastics Corp. | Closure Systems and Methods For Containers |
| CN207107457U (en) * | 2017-08-22 | 2018-03-16 | 连云港振兴集团石化设备制造有限公司 | A kind of storage tank box-type inner floating disc |
| CN108519727A (en) * | 2018-06-04 | 2018-09-11 | 珠海天威飞马打印耗材有限公司 | Powder box and the method for opening and closing meal outlet on powder box |
| CN108873648A (en) * | 2018-06-04 | 2018-11-23 | 珠海天威飞马打印耗材有限公司 | Powder box and imaging device |
| CN109258493A (en) * | 2018-11-27 | 2019-01-25 | 中国农业大学 | A kind of rabbit-hutch drawing-in device and its automatic control system |
| CN113031415A (en) * | 2021-03-24 | 2021-06-25 | 珠海天威飞马打印耗材有限公司 | Carbon powder cylinder |
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Effective date of abandoning: 20240927 |