CN115629527A

CN115629527A - Carbon powder centralized supply system and supply method thereof

Info

Publication number: CN115629527A
Application number: CN202211326919.0A
Authority: CN
Inventors: 杨吉伟; 邹明科; 蒋卫星; 葛胜利
Original assignee: Dongguan Tieshi Document Technology Co ltd
Current assignee: Dongguan Tieshi Document Technology Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-01-20
Anticipated expiration: 2042-10-27
Also published as: CN115629527B

Abstract

The invention discloses a centralized toner supply system, which comprises a toner storage device, a plurality of conveying devices and a plurality of printers, wherein the toner storage device is used for storing toner; the carbon powder storage device comprises a carbon powder storage tank for storing carbon powder and a vulcanizing pump for keeping the carbon powder in the carbon powder storage tank in a flowing state; each printer is connected with the carbon powder storage device through a conveying device, one end of each conveying device is connected with the carbon powder storage tank, and the other end of each conveying device is connected with the corresponding powder adding port of the printer; according to the invention, the carbon powder storage device, the plurality of conveying devices and the plurality of printers are arranged, and each printer is connected with the carbon powder storage device through the conveying device, so that carbon powder can be continuously and simultaneously replenished for each printer, the centralized supply of the carbon powder is realized, the shutdown operation is not required, the printing efficiency is ensured, the printer is not required to be disassembled, and the structure is more reliable.

Description

Carbon powder centralized supply system and supply method thereof

Technical Field

The invention relates to the technical field of adding carbon powder to a printer, in particular to a centralized carbon powder supply system.

Background

The existing printer realizes the supply of the carbon powder to the printer by loading the carbon powder in the carbon powder bin of the toner cartridge, and the integrated structure of the carbon powder bin and the toner cartridge has the advantages of flexible use, no field limitation and the like, and is suitable for the printing mode of a single printer with relatively few printing tasks.

However, in a use scene where a plurality of printers are used in batch for a large number of printing tasks, the toner hopper needs to be manually replenished with toner at high frequency in a shutdown state in an independent toner supply mode, which affects printing efficiency, and the toner cartridge and the printer are easily damaged when the toner cartridge is detached.

Disclosure of Invention

The present invention is to overcome the above-mentioned drawbacks and to provide a centralized toner supply system.

In order to achieve the purpose, the invention adopts the following specific scheme:

a centralized toner supply system comprises a toner storage device, a plurality of conveying devices and a plurality of printers;

the carbon powder storage device comprises a carbon powder storage tank for storing carbon powder and a vulcanizing pump for keeping the carbon powder in the carbon powder storage tank in a flowing state;

every all be connected through conveyor between printer and the carbon dust storage device, conveyor's one end and carbon dust storage tank are connected, conveyor's the other end and the powder mouth that adds of the printer that corresponds are connected.

The invention further discloses a conveying device, which comprises a conveying pipe and a carbon powder conveying chain, wherein two ends of the conveying pipe are respectively connected with a chain wheel seat, each chain wheel seat is internally and rotatably connected with a transmission chain wheel, the peripheral wall of each transmission chain wheel is circumferentially and uniformly provided with a chain tooth part and a suction and discharge driving assembly, the chain tooth parts and the suction and discharge driving assemblies are sequentially and alternately arranged, the suction and discharge driving assemblies are movably inserted on the transmission chain wheels along the radial direction, each chain wheel seat is provided with a conveying motor of which the output end is connected with the transmission chain wheel, each chain wheel seat is also provided with a cam, the cam axially extends into a central hole of the transmission chain wheel along the transmission chain wheel, the bottom of the cam is convexly provided with an arc driving part for enabling the suction and discharge driving assembly to extend out along the radial direction, the bottom of the chain wheel seat is provided with an opening, and the opening is communicated with a powder adding port of a carbon powder storage tank or a printer;

the carbon powder conveying chain comprises a plurality of power transmission units and a plurality of powder suction units, wherein the power transmission units and the powder suction units are sequentially connected in an alternating spherical manner and are connected end to form the carbon powder conveying chain;

all be equipped with in conveyer pipe, two chain wheel seats and be used for supplying the carbon powder to carry chain endless rotation's direction passageway, the both ends of carbon powder transport chain correspond the wraparound and connect on two drive sprocket, when carbon powder transport chain and drive sprocket wraparound connect, the power transmission unit of carbon powder transport chain and the sprocket portion transmission cooperation of the drive sprocket that corresponds, carbon powder transport chain inhale the powder unit with inhale row drive assembly cooperation that corresponds, inhale the powder unit and can stretch out outside the chain wheel seat when corresponding with the opening of chain wheel seat.

Furthermore, each power transmission unit comprises a transmission disc body, four permanent magnets which are arranged at equal intervals are embedded in the circumferential wall of the transmission disc body along the circumferential direction, first connecting shafts are arranged on two sides of the transmission disc body in a protruding mode along the axial direction, a ball head is arranged at the free end of each first connecting shaft, and the ball heads are hinged with the spherical surfaces of the adjacent powder suction units; the inner peripheral wall of the guide channel in the conveying pipe is coated with a magnetic coating with the same magnetism as the permanent magnet.

Furthermore, each powder suction unit comprises a first powder suction seat, a second powder suction seat and a powder suction piston; the second powder absorbing seat is provided with a powder absorbing groove, is fixedly connected to the bottom of the first powder absorbing seat and forms a powder absorbing cavity with the first powder absorbing seat through the powder absorbing groove; the powder suction piston is movably arranged in the powder suction cavity, the upper end profile of the powder suction piston penetrates through the first powder suction seat and then extends outwards to be in contact fit with the corresponding suction and discharge driving assembly, a first spring is connected between the powder suction piston and the bottom of the powder suction groove, a suction pipe communicated with the powder suction cavity is arranged at the bottom of the second powder suction seat, a sealing ring is embedded at the joint of the suction pipe and the powder suction cavity, a sealing ball and a second spring are arranged in the suction pipe, the sealing ball is abutted against the sealing ring under the action of the second spring, part of the sealing ball extends into the powder suction cavity, and the first spring is abutted against the spherical surface of the sealing ball; the outer side wall of the first powder absorbing seat is symmetrically and convexly provided with two second connecting shafts, the free ends of the second connecting shafts are provided with ball sockets, and the ball sockets are hinged with the adjacent ball head spherical surfaces.

Furthermore, a first ball wheel is movably embedded at the outer end part of the powder suction piston.

Furthermore, the inner wall of the guide channel is provided with a limiting groove for limiting the suction pipe, and the inner wall of the guide channel is provided with a guide groove for guiding the first ball wheel.

Further, the stiffness of the first spring is greater than the stiffness of the second spring.

Furthermore, each suction driving assembly comprises a push rod, a third spring and a second ball wheel, the push rod penetrates through the transmission chain wheel along the radial direction, the third spring is sleeved on the push rod, two ends of the third spring are respectively abutted against the inner wall of the transmission chain wheel and the inner end of the push rod, and the second ball wheel is movably embedded on the inner end of the push rod.

Furthermore, the chain tooth part is provided with a clamping groove in a Y-shaped structure, and part of the power transmission unit is movably clamped in the clamping groove so as to realize power transmission between the carbon powder conveying chain and the transmission chain wheel.

The invention has the beneficial effects that: according to the invention, the carbon powder storage device, the plurality of conveying devices and the plurality of printers are arranged, and each printer is connected with the carbon powder storage device through the conveying device, so that carbon powder can be continuously and simultaneously supplemented for each printer, the centralized supply of the carbon powder is realized, the shutdown operation is not required, the printing efficiency is ensured, the printer is not required to be disassembled, and the structure is more reliable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the conveyor of the present invention;

FIG. 3 is a schematic view of the delivery device of the present invention after the delivery tube is hidden;

FIG. 4 is an exploded view of a portion of the delivery device of the present invention;

FIG. 5 is a schematic sectional view of a portion of the structure of the delivery device of the present invention;

FIG. 6 is a schematic structural view of the power transmission unit of the present invention;

FIG. 7 is a schematic structural view of a powder suction unit of the present invention;

FIG. 8 is a schematic cross-sectional view of a powder suction unit of the present invention;

FIG. 9 is a schematic cross-sectional view of the suction drive assembly of the present invention;

description of reference numerals: 100. a carbon powder storage device; 11. a carbon powder storage tank; 12. a vulcanization pump; 200. a conveying device; 21. a delivery pipe; 22. a carbon powder conveying chain; 221. a power transmission unit; 2211. a transmission disc body; 2212. a permanent magnet; 2213. a first connecting shaft; 2214. a ball head; 222. a powder suction unit; 2221. a first powder absorbing seat; 2222. a second powder suction seat; 2223. a powder sucking piston; 2224. a first spring; 2225. a straw; 2226. a sealing ball; 2227. a second spring; 2228. a second connecting shaft; 2229. a ball socket; 23. a sprocket seat; 24. a drive sprocket; 241. a chain tooth part; 25. a suction driving assembly; 251. a push rod; 252. a third spring; 253. a second ball wheel; 26. a conveying motor; 27. a cam; 271. an arc driving section; 300. a printer.

Detailed Description

The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.

As shown in fig. 1 to 9, the centralized toner supply system of the present embodiment includes a toner storage device 100, a plurality of conveying devices 200, and a plurality of printers 300; the carbon powder storage device 100 comprises a carbon powder storage tank 11 for storing carbon powder and a vulcanizing pump 12 for keeping the carbon powder in the carbon powder storage tank 11 in a flowing state; each printer 300 is connected with the toner storage device 100 through a conveying device 200, one end of the conveying device 200 is connected with the toner storage tank 11, and the other end of the conveying device 200 is connected with a toner adding port of the corresponding printer 300. This embodiment is through setting up the fluidization pump, make the carbon dust in the carbon dust storage tank 11 keep being in the mobile state, conveyor 200 directly carries the carbon dust in the carbon dust storage tank 11 to the powder adding mouth of printer 300, thereby realize replenishing the carbon dust for printer 300, so through setting up carbon dust storage device 100, a plurality of conveyor 200 and a plurality of printer 300, and all be connected through conveyor 200 between every printer 300 and the carbon dust storage device 100, thereby can continuously replenish the carbon dust for each printer 300 simultaneously, realize the concentrated supply of carbon dust, as shown in fig. 1, simultaneously replenish the carbon dust operation for four printers 300 through four conveyor 200, need not to stop the quick-witted operation, guarantee printing efficiency, need not to dismantle printer 300, the structure is more reliable.

In this embodiment, the conveying device 200 includes a conveying pipe 21 and a toner conveying chain 22, two ends of the conveying pipe 21 are connected with chain wheel seats 23, each chain wheel seat 23 is connected with a transmission chain wheel 24 in a rotating manner, the peripheral wall of the transmission chain wheel 24 is uniformly provided with chain tooth parts 241 and suction and discharge driving components 25 along the circumferential direction, the chain tooth parts 241 and the suction and discharge driving components 25 are sequentially and alternately arranged, the suction and discharge driving components 25 are movably inserted into the transmission chain wheel 24 along the radial direction, each chain wheel seat 23 is provided with a conveying motor 26 of which the output end is connected with the transmission chain wheel 24, each chain wheel seat 23 is further provided with a cam 27, the cam 27 extends into a central hole of the transmission chain wheel 24 along the axial direction of the transmission chain wheel 24, the bottom of the cam 27 is convexly provided with an arc driving part 271 for extending the suction and discharge driving component 25 along the radial direction, the bottom of the chain wheel seat 23 is provided with a toner opening, and the toner opening is communicated with a toner adding port of the storage tank 11 or the printer 300;

the carbon powder conveying chain 22 comprises a plurality of power transmission units 221 and a plurality of powder suction units 222, wherein the power transmission units 221 and the powder suction units 222 are sequentially connected in an alternating spherical manner and are connected end to form the carbon powder conveying chain 22;

all be equipped with in conveyer pipe 21, two sprocket 23 and be used for supplying carbon powder conveying chain 22 circulative rotation's direction passageway, carbon powder conveying chain 22's both ends correspond to connect around on two drive sprocket 24, when carbon powder conveying chain 22 and drive sprocket 24 wraparound connect, the power transmission unit 221 of carbon powder conveying chain 22 and the sprocket portion 241 transmission cooperation of drive sprocket 24 that corresponds, carbon powder conveying chain 22 inhale powder unit 222 and the cooperation of inhaling row drive assembly 25 that corresponds, inhale powder unit 222 and can stretch out outside sprocket 23 when corresponding with sprocket 23's opening. Correspondingly, the toner storage device 100 is located on the toner supply side and the printer 300 is located on the toner receiving side.

The working mode of the embodiment is as follows: when the carbon powder conveying device works, the conveying motor 26 drives the transmission chain wheel 24 to rotate, and partial power transmission units 221 of the carbon powder conveying chain 22 are correspondingly matched with the chain tooth parts 241 of the transmission chain wheel 24 in a transmission manner, so that the transmission chain wheel 24 drives the carbon powder conveying chain 22 to circularly rotate along the guide channel;

when the powder suction unit 222 moves to the opening position corresponding to the chain wheel seat 23 on the powder supply side, the powder suction unit 222 can extend out of the chain wheel seat 23 and into the carbon powder storage tank, the corresponding suction and discharge driving component 25 is in contact with the arc driving part 271 of the cam 27, the carbon powder conveying chain 22 is further driven to rotate along with the transmission chain wheel 24, the arc driving part 271 of the cam 27 enables the suction and discharge driving component 25 to extend out along the radial direction, and the suction and discharge driving component 25 drives the corresponding powder suction unit 222 to work, so that carbon powder in the carbon powder storage tank in a flowing state is sucked;

then, the toner conveying chain 22 drives the toner suction unit 222 sucked with the toner to move to the chain wheel seat 23 positioned on the toner receiving side along the track of the guide channel until the toner suction unit 222 sucked with the toner rotates to correspond to the opening position of the chain wheel seat 23 on the toner receiving side, the corresponding suction and discharge driving assembly 25 is in contact fit with the arc driving part 271 of the cam 27 on the toner receiving side, and drives the corresponding toner suction unit 222 to discharge the toner into the toner adding port of the corresponding printer 300 through the opening, so that the toner suction and discharge processes are repeated along with the continuous circular rotation of the toner conveying chain 22, and the toner is continuously supplied to each printer 300.

In the embodiment, the carbon powder conveying chain 22 is formed by arranging the plurality of power transmission units 221 and the plurality of powder suction units 222, so that the carbon powder conveying chain rotates circularly along the guide channel under the driving of the transmission chain wheel 24, and the carbon powder is continuously supplemented into the printer 300 by matching the suction and discharge driving assembly 25 with the arc driving part 271 of the cam 27, the shutdown operation is not needed, and the printing efficiency is ensured.

Based on the above embodiment, further, each power transmission unit 221 includes a transmission disc 2211, four permanent magnets 2212 arranged at equal intervals are embedded in the circumferential wall of the transmission disc 2211 along the circumferential direction, first connection shafts 2213 are arranged on both sides of the transmission disc 2211 in a protruding manner along the axial direction, a ball head 2214 is arranged at the free end of each first connection shaft 2213, and the ball head 2214 is in spherical hinge with the adjacent powder suction unit 222; the inner peripheral wall of the guide passage in the feed pipe 21 is coated with a magnetic coating having the same magnetism as that of the permanent magnet 2212.

During practical use, the transmission disc body 2211 can be correspondingly matched with the chain tooth part 241 of the transmission chain wheel 24 in a transmission mode, so that power transmission between the toner conveying chain 22 and the transmission chain wheel 24 is achieved, the transmission chain wheel 24 can drive the toner conveying chain 22 to rotate, meanwhile, when the power transmission unit 221 enters the guide channel of the conveying pipe 21, the permanent magnet 2212 on the transmission disc body 2211 and the magnetic coating on the inner wall of the guide channel generate magnetic field acting force, the transmission disc body 2211 is suspended in the guide channel, friction resistance of the toner conveying chain 22 in the movement process of the guide channel is reduced, and the toner conveying chain 22 rotates more smoothly in a circulating mode.

In this embodiment, each powder suction unit 222 includes a first powder suction seat 2221, a second powder suction seat 2222, and a powder suction piston 2223; the second powder absorbing seat 2222 has a powder absorbing groove, the second powder absorbing seat 2222 is fixedly connected to the bottom of the first powder absorbing seat 2221, and a powder absorbing cavity is formed by the powder absorbing groove and the first powder absorbing seat 2221; the powder suction piston 2223 is movably arranged in the powder suction cavity, the upper end profile of the powder suction piston 2223 penetrates through the first powder suction seat 2221 and then extends outwards to be in contact fit with the corresponding suction and discharge driving component 25, a first spring 2224 is connected between the powder suction piston 2223 and the bottom of the powder suction groove, the bottom of the second powder suction seat 2222 is provided with a suction pipe 2225 communicated with the powder suction cavity, a sealing ring is embedded at the joint of the suction pipe 2225 and the powder suction cavity, a sealing ball 2226 and a second spring 2227 are arranged in the suction pipe 2225, the sealing ball is abutted against the sealing ring under the action of the second spring 2222227, part of the sealing ball protrudes into the powder suction cavity, and the first spring 2224 is abutted against the spherical surface of the sealing ball 2226; two second connecting shafts 2228 are symmetrically and convexly arranged on the outer side wall of the first powder absorbing seat 2221, a ball socket 2229 is arranged at the free end of each second connecting shaft 2228, and each ball socket 2229 is hinged with the spherical surface of the adjacent ball head 2214. In this embodiment, a first ball wheel is movably embedded in the outer end of the powder suction piston 2223, so that the friction when the powder suction piston 2223 contacts with the suction driving assembly 25 is changed into rolling friction, and the friction force is smaller.

Specifically, when the suction driving assembly 25 contacts with the arc driving part 271 of the cam 27, along with the rotation of the transmission sprocket 24, the arc driving part 271 of the cam 27 enables the suction driving assembly 25 to press the powder suction piston 2223 to extend into the powder suction cavity, the powder suction piston 2223 compresses the first spring 2224, and the first spring 2224 compresses the second spring 2227 through the sealing ball 2226, so that the suction pipe 2225 is communicated with the powder suction cavity;

at this time, the powder suction unit 222 on the powder supply side discharges air in the powder suction cavity, then along with the rotation of the transmission chain wheel 24, the arc driving part 271 of the cam 27 gradually releases the extrusion on the suction and discharge driving component 25, the suction and discharge driving component 25 releases the extrusion on the powder suction piston 2223, the first spring 2224 is reset and drives the powder suction piston 2223 to extend out, so that the effective volume of the powder suction cavity is increased, carbon powder in the carbon powder storage tank is sucked into the powder suction cavity through the suction pipe 2225, in order to ensure that the suction pipe 2225 of each powder suction unit 222 can fully suck carbon powder, the capacity of the carbon powder in the carbon powder storage tank is controlled to be in a full-load state, then the second spring 2227 is reset and drives the sealing ball 2226 to be reset to be in sealing abutment with the sealing ring, so that the suction pipe 2225 is disconnected with the powder suction cavity, and then moves into the chain wheel seat 23 on the powder receiving side along the guide channel along with the carbon powder conveying chain 22 to perform the powder discharging operation;

the powder suction unit 222 located at the powder receiving side discharges the carbon powder in the powder suction chamber to the powder adding port of the printer 300 through the suction pipe 2225, in order to prevent the discharged carbon powder from being sucked back into the powder suction chamber again, the carbon powder in the carbon powder bin of the printer 300 is contained and controlled in a half-volume state, then the powder suction piston 2223 is reset under the action of the first spring 2224, the sealing ball 2226 is reset under the action of the second spring 2227, the communication between the suction pipe 2225 and the powder suction chamber is disconnected, and then the carbon powder conveying chain 22 moves along the track of the guide channel to the chain wheel seat 23 at the powder supply side for carrying out the powder suction operation again.

In this embodiment, a toner suction cavity is formed in the toner suction unit 222, a toner suction piston 2223, a first spring 2224, a second spring 2227, a sealing ball 2226, a sealing ring, and a suction pipe 2225, so that the suction of toner can be realized under the driving of the suction driving assembly 25, and the discharge of toner can also be realized, so that the toner can be replenished to the printer 300, and meanwhile, in the toner transferring process, the toner is sucked into the toner suction cavity, compared with a pipeline type direct conveying mode, the surface shape of toner caused by the direct contact friction between the toner and the wall surface of the conveying pipe 21 can be avoided, the particle shape is damaged, which is beneficial to ensuring the quality of toner, and thus, the printing effect of the printer 300 can be ensured.

Based on the above embodiment, further, the inner wall of the guide channel is provided with a limiting groove for limiting the suction pipe 2225, and the inner wall of the guide channel is provided with a guide groove for guiding the first ball wheel. In this embodiment, the inner wall of the guide channel is provided with the limiting groove, so that the powder suction unit 222 moves in the guide channel, the suction pipe 2225 of the powder suction unit 222 is clamped into the limiting groove, and the first ball wheel of the powder suction unit 222 is clamped into the guide groove, so that the powder suction unit 222 is limited, the state of the powder suction unit 222 moving along the guide channel is ensured, and the reliable conveying of carbon powder is ensured.

Based on the above embodiment, further, the stiffness of the first spring 2224 is greater than the stiffness of the second spring 2227. In this embodiment, the stiffness of the first spring 2224 is greater than the stiffness of the second spring 2227, so that when the suction driving assembly 25 presses the powder suction piston 2223, the second spring 2227 is compressed first, and when the first spring 2224 is reset, the first spring 2224 is reset first, so that when the effective volume of the powder suction chamber is increased, the suction tube 2225 and the powder suction chamber are still in a communication state, so as to ensure that carbon powder is fully sucked into the powder suction chamber.

Based on the above embodiment, each suction driving assembly 25 further includes a push rod 251, a third spring 252 and a second ball wheel 253, the push rod 251 is radially disposed on the transmission chain wheel 24, the third spring 252 is sleeved on the push rod 251, two ends of the third spring 252 are respectively abutted against an inner wall of the transmission chain wheel 24 and an inner end of the push rod 251, and the second ball wheel 253 is movably embedded on an inner end of the push rod 251. In the embodiment, the second ball wheel 253 is arranged to be in contact with the arc driving part 271 of the cam 27, so that the friction force is small, the contact fit between the arc driving part 271 and the push rod 251 is facilitated, and the third spring 252 is arranged to facilitate the reset of the push rod 251. When the second ball wheel 253 gradually contacts with the arc driving part 271 of the cam 27, the arc driving part 271 presses the push rod 251 to extend outward in the radial direction through the second ball wheel 253, so as to press the powder suction piston 2223, the third spring 252 is compressed, after the second ball wheel 253 passes through the lowest point of the arc driving part 271, the arc driving part 271 gradually releases the pressing on the push rod 251, the push rod 251 is reset under the elastic force of the third spring 252, so that the powder suction piston 2223 is reset to extend out under the action of the first spring 2224, and thus, carbon powder is sucked into the powder suction cavity.

Based on the above embodiments, further, the chain tooth portion 241 has a clamping groove with a Y-shaped structure, and a part of the power transmission unit 221 is movably clamped in the clamping groove to realize power transmission between the carbon powder conveying chain 22 and the transmission chain wheel 24. Specifically, a portion of the driving plate 2211 is movably clamped into the clamping groove, so that the driving sprocket 24 drives the toner conveying chain 22 to rotate.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.

Claims

1. A centralized toner supply system is characterized by comprising a toner storage device (100), a plurality of conveying devices (200) and a plurality of printers (300);

the carbon powder storage device (100) comprises a carbon powder storage tank (11) for storing carbon powder and a vulcanizing pump (12) for keeping the carbon powder in the carbon powder storage tank (11) in a flowing state;

each printer (300) is connected with the carbon powder storage device (100) through a conveying device (200), one end of each conveying device (200) is connected with the carbon powder storage tank (11), and the other end of each conveying device (200) is connected with the corresponding powder adding port of the printer (300).

2. The centralized toner supply system according to claim 1, wherein the conveying device (200) comprises a conveying pipe (21) and a toner conveying chain (22), two ends of the conveying pipe (21) are connected with chain wheel seats (23), each chain wheel seat (23) is connected with a driving chain wheel (24) in a rotating manner, the peripheral wall of the driving chain wheel (24) is circumferentially and uniformly provided with a chain tooth part (241) and a suction driving assembly (25), the chain tooth part (241) and the suction driving assembly (25) are sequentially and alternately arranged, the suction driving assembly (25) is movably inserted into the driving chain wheel (24) along the radial direction, each chain wheel seat (23) is provided with a conveying motor (26) of which the output end is connected with the driving chain wheel (24), each chain wheel seat (23) is further provided with a cam (27), the cam (27) extends into a central hole of the driving chain wheel (24) along the axial direction of the driving chain wheel (24), the bottom of the cam (27) is provided with an arc-shaped storage tank (271) for enabling the suction driving assembly (25) to extend out along the radial direction, and the opening of the chain wheel seat (23) is communicated with the printer (11) or the printer;

the carbon powder conveying chain (22) comprises a plurality of power transmission units (221) and a plurality of powder suction units (222), wherein the power transmission units (221) and the powder suction units (222) are sequentially connected in an alternating spherical manner and are connected end to form the carbon powder conveying chain (22);

all be equipped with in conveyer pipe (21), two sprocket seats (23) and be used for supplying carbon powder to carry chain (22) endless rotation's direction passageway, the both ends correspondence of carbon powder transport chain (22) are around connecing on two drive sprocket (24), when carbon powder transport chain (22) and drive sprocket (24) are around connecing, power transmission unit (221) of carbon powder transport chain (22) and the sprocket portion (241) transmission cooperation of drive sprocket (24) that corresponds, carbon powder transport chain (22) inhale powder unit (222) and the row's of inhaling drive assembly (25) cooperation that corresponds, inhale powder unit (222) and can stretch out to outside sprocket seat (23) when corresponding with the opening of sprocket seat (23).

3. A concentrated toner supply system according to claim 2, wherein each power transmission unit (221) comprises a transmission disk body (2211), four permanent magnets (2212) arranged at equal intervals are embedded in the circumferential wall of the transmission disk body (2211) along the circumferential direction, a first connecting shaft (2213) is axially protruded on both sides of the transmission disk body (2211), a ball head (2214) is arranged at the free end of the first connecting shaft (2213), and the ball head (2214) is spherically hinged with the adjacent toner suction unit (222); the inner peripheral wall of the guide channel in the conveying pipe (21) is coated with a magnetic coating with the same magnetism as the permanent magnet (2212).

4. A centralized toner supply system according to claim 3, wherein each of the toner suction units (222) comprises a first toner suction seat (2221), a second toner suction seat (2222) and a toner suction piston (2223); the second powder absorbing seat (2222) is provided with a powder absorbing groove, the second powder absorbing seat (2222) is fixedly connected to the bottom of the first powder absorbing seat (2221), and a powder absorbing cavity is formed by the powder absorbing groove and the first powder absorbing seat (2221); the powder suction piston (2223) is movably arranged in the powder suction cavity, the upper end profile of the powder suction piston (2223) penetrates through the first powder suction seat (2221) and then extends outwards to be in contact fit with the corresponding suction and discharge driving component (25), a first spring (2224) is connected between the powder suction piston (2223) and the bottom of the powder suction groove, a suction pipe (2225) communicated with the powder suction cavity is arranged at the bottom of the second powder suction seat (2222), a sealing ring is embedded at the connection position of the suction pipe (2225) and the powder suction cavity, a sealing ball (2226) and a second spring (2227) are arranged in the suction pipe (2225), the sealing ball (2226) abuts against the sealing ring under the action of the second spring (2227) and partially extends into the powder suction cavity, and the first spring (2224) abuts against the spherical surface of the sealing ball 2226); two second connecting shafts (2228) are symmetrically and convexly arranged on the outer side wall of the first powder absorbing seat (2221), a ball socket (2229) is arranged at the free end of each second connecting shaft (2228), and each ball socket (2229) is hinged with the spherical surface of the adjacent ball head (2214).

5. A centralized toner supply system as in claim 4, wherein a first ball wheel is movably embedded at the outer end of the toner sucking piston (2223).

6. The centralized carbon powder supply system as recited in claim 5, wherein the inner wall of the guide channel is provided with a limiting groove for limiting the suction pipe (2225), and the inner wall of the guide channel is provided with a guide groove for guiding the first ball wheel.

7. A centralized toner supply system as in claim 4, wherein the stiffness of the first spring (2224) is greater than the stiffness of the second spring (2227).

8. A centralized toner supply system as in claim 4, wherein each suction driving assembly (25) comprises a push rod (251), a third spring (252) and a second ball wheel (253), the push rod (251) is radially inserted into the transmission sprocket (24), the third spring (252) is sleeved on the push rod (251), two ends of the third spring (252) are respectively abutted against the inner wall of the transmission sprocket (24) and the inner end of the push rod (251), and the second ball wheel (253) is movably embedded in the inner end of the push rod (251).

9. A toner concentrated supply system according to claim 2, wherein the chain tooth portion (241) has a Y-shaped engaging groove, and a part of the power transmission unit (221) is movably engaged in the engaging groove to realize power transmission between the toner conveying chain (22) and the transmission sprocket (24).

10. A supplying method of a carbon powder centralized supplying system as claimed in claim 2, comprising the steps of:

s100: the conveying motor (26) drives the transmission chain wheel (24) to rotate, partial power transmission units (221) of the carbon powder conveying chain (22) are correspondingly matched with the chain tooth parts (241) of the transmission chain wheel (24) in a transmission way, and the transmission chain wheel (24) drives the carbon powder conveying chain (22) to rotate circularly along the guide channel;

s200: when the powder suction unit (222) moves to the position corresponding to the opening of the chain wheel seat (23) on the powder supply side, the powder suction unit (222) can extend out of the chain wheel seat (23) and into the carbon powder storage tank, the corresponding suction and discharge driving component (25) is in contact with the arc driving part (271) of the cam (27), the suction and discharge driving component (25) drives the corresponding powder suction unit (222) to work along the radial direction along with the further driving of the transmission chain wheel (24) to drive the carbon powder conveying chain (22) to rotate, the arc driving part (271) of the cam (27) enables the suction and discharge driving component (25) to extend out, and carbon powder in a flowing state in the carbon powder storage tank is sucked;

s300: the carbon powder conveying chain (22) drives the powder suction unit (222) sucked with the carbon powder to move into the chain wheel seat (23) positioned on the powder receiving side along the track of the guide channel until the powder suction unit (222) sucked with the carbon powder rotates to correspond to the opening position of the chain wheel seat (23) positioned on the powder receiving side, the corresponding suction and discharge driving assembly (25) is in contact fit with the arc driving part (271) of the cam (27) on the powder receiving side, and the corresponding powder suction unit (222) is driven to discharge the carbon powder into the powder adding opening of the corresponding printer (300) through the opening;

s400: with the continuous circulation rotation of the toner conveying chain (22), the steps S200 and S300 are repeated, and toner is continuously supplied to each printer (300).