阅读说明：本技术 一种基轴式金属3d打印机用金属粉循环装置 (Base shaft type metal powder circulating device for metal 3D printer ) 是由 韩品连 于 2020-12-10 设计创作，主要内容包括：本发明公开了一种基轴式金属3D打印机用金属粉循环装置,包括吸粉装置、筛粉机和计量送粉装置；所述吸粉装置的储粉缸通过送粉管与筛粉机的进料口相连通；所述括筛分机的第一出料口和第二出料口均通过送粉管与与计量送粉装置的进料口相连通；所述计量送粉装置的出料口与供粉口通过送粉管相连通。本发明的基轴式金属3D打印机用金属粉循环装置结构简单,使用方便,采用所述吸粉装置的吸头伸入打印腔室内,将金属粉末进行回收,且能够有效保证回收处理的效果保证了多余的金属粉末能够满足下一次打印的要求,再与计量送粉装置的配合使用,将筛选合格的金属粉末提供至SLM金属打印机的(打印腔室内的)铺粉装置中/打印腔室的粉缸内。(The invention discloses a metal powder circulating device for a base shaft type metal 3D printer, which comprises a powder suction device, a powder screening machine and a metering and powder feeding device, wherein the powder suction device is arranged on the base shaft type metal 3D printer; the powder storage cylinder of the powder suction device is communicated with the feed port of the powder sieving machine through a powder feeding pipe; the first discharge port and the second discharge port of the sieving machine are communicated with a feed port of the metering powder feeding device through powder feeding pipes; and the discharge port of the metering powder feeding device is communicated with the powder supply port through a powder feeding pipe. The metal powder circulating device for the base shaft type metal 3D printer is simple in structure and convenient to use, the suction head of the powder suction device is adopted to extend into the printing cavity to recover metal powder, the effect of recovery treatment can be effectively guaranteed, the redundant metal powder can meet the requirement of next printing, and the metal powder circulating device is matched with the metering powder feeding device to be used, so that the qualified screened metal powder is provided to a powder spreading device (in the printing cavity) of the SLM metal printer or a powder cylinder of the printing cavity.)

1. The utility model provides a base shaft formula metal powder circulating device for metal 3D printer which characterized in that: comprises a powder suction device (2), a powder screening machine (1) and a metering powder feeding device (03);

the powder storage cylinder (21201) of the powder suction device (2) is communicated with the feeding hole (12) of the powder sieving machine (1) through a powder feeding pipe (3); a vacuum conveyor (4) is arranged on the powder feeding pipe (3);

the first discharge hole (13) and the second discharge hole (14) of the sieving machine (1) are communicated with a feed inlet (33) of the metering powder feeding device (03) through a powder feeding pipe (3); a vacuum conveyor (4) is arranged on the powder feeding pipe (3) between the sieving machine (1) and the metering powder feeding device (03);

the discharge hole (34) of the metering powder feeding device (03) is communicated with the powder supply hole (301) through a powder feeding pipe (3); a vacuum conveyor (4) is arranged on the powder feeding pipe (3) between the metering powder feeding device (03) and the powder supply port (301);

the powder suction device comprises a second box body (21), a support (22) is fixedly mounted on the side wall of the second box body (21), a second shell body (23) is fixedly mounted inside the second box body (21), a second motor (24) is fixedly mounted inside the second shell body (23), an output shaft of the second motor (24) is fixedly connected with a rotating assembly (25), a powder suction assembly (26) and a second transmission assembly (27) are arranged inside the second box body (21), the second transmission assembly (27) is in transmission connection with the rotating assembly (25), the powder suction assembly (26) is communicated with the top of the second shell body (23), a first sleeve block (29) and a second sleeve block (210) are fixedly mounted on the outer surface of the powder suction assembly (26), the second sleeve block (210) is in sliding connection with the upper surface of the support (22), and a second connecting rod (28) is rotatably connected to the bottom of the first sleeve block (29) through a rotating shaft, the bottom of the second connecting rod (28) is rotatably connected with a second transmission assembly (27) through a rotating shaft, a powder storage assembly (212) is fixedly connected inside the second box body (21) through a bolt, and the powder storage assembly (212) is communicated with the bottom of the second shell (23) through a pipeline (211);

the powder screening machine comprises a powder screening box (11), wherein a feeding hole (12) is formed in the top of the powder screening box (11), and a first discharging hole (13) and a second discharging hole (14) are formed in the bottom of the powder screening box in parallel; a powder sieving frame (15) is arranged in the powder sieving box (11) in a sliding manner, and a screen (16) is fixedly arranged on the powder sieving frame (15); a connecting shaft (17) extending out of the powder screening box (11) is fixedly arranged on one side of the powder screening frame (15); the powder sieving box (11) is also fixedly provided with a driving motor (18), the driving motor (18) is connected with a rotating disc (19), the rotating disc (19) is eccentrically provided with a connecting rod (110), and the connecting rod (110) and the connecting shaft (17) are respectively hinged with two ends of the same connecting rod (111);

the quantitative powder feeding device comprises a storage box (31) and a controller (32), wherein the upper side and the lower side of the storage box (31) are respectively provided with a feeding hole (33) and a discharging hole (34), the storage box (31) is fixedly provided with a rotating shaft (35) and an adjusting motor (36) which are mutually connected, and the rotating shaft (35) is also fixedly provided with a metering roller (37); the metering roller (37) is uniformly provided with a plurality of partition plates (38), the storage box (31) is internally provided with an isolation bin (39) matched with the metering roller (37), and the adjusting motor (36) is connected with the controller (32).

2. The metal powder circulating device for the base shaft type metal 3D printer according to claim 1, wherein: the lateral wall of second box (21) has side door (213) through hinge rotation connection, the lateral wall fixed mounting of side door (213) has second handle (214), the surface of support (22) runs through and threaded connection has gag lever post (215), the top fixed mounting of gag lever post (215) has clamp plate (216), the bottom fixed mounting of second nest of blocks (210) has dovetail block (217), dovetail (218) have been seted up to the upper surface of support (22).

3. The metal powder circulating device for the base shaft type metal 3D printer according to claim 1, wherein: the rotating assembly (25) comprises a central shaft (2501), and a first bevel gear (2502) and a plurality of fan blades (2503) are fixedly mounted on the outer surface of the central shaft (2501).

4. The metal powder circulating device for the base shaft type metal 3D printer according to claim 1, wherein: the powder absorbing assembly (26) comprises a connecting pipe (2601), one end of the connecting pipe (2601) is communicated with a suction head (2602), and the other end of the connecting pipe (2601) is communicated with a second hose (2603).

5. The metal powder circulating device for the base shaft type metal 3D printer according to claim 1, wherein: the second transmission assembly (27) comprises a round bar (2701), the round bar (2701) is rotatably connected with the side wall of the second casing (23), a second bevel gear (2702) is fixedly installed at one end of the round bar (2701), and a rotary disc (2703) is fixedly installed at the other end of the round bar (2701).

6. The metal powder circulating device for the base shaft type metal 3D printer according to claim 1, wherein: the powder storage assembly (212) comprises a powder storage cylinder (21201), a partition plate (212002) is connected to the side wall of the powder storage cylinder (21201) in a hinge rotating mode, and a breathable net (21203) is embedded on the surface of the partition plate (21203).

7. The metal powder circulating device for the base shaft type metal 3D printer according to claim 1, wherein: two sides of the powder sieving frame (15) are provided with mutually symmetrical connecting shafts (17), the powder sieving box (11) is rotatably provided with a rotating shaft (112), and the rotating shaft (112) is connected with a driving motor (18) through a transmission gear (113); the two ends of the rotating shaft (112) extend out of the powder sieving box (11), rotating disks (19) are arranged on the two sides of the rotating shaft, a connecting rod (111) is eccentrically connected to each rotating disk (19), and the other end of each connecting rod (111) is hinged to the connecting shaft (17).

8. The metal powder circulating device for the base shaft type metal 3D printer according to claim 1, wherein: the powder sieving box (11) is internally provided with a supporting plate (114), and the powder sieving frame (15) is provided with a roller (115) matched with the supporting plate (114).

The cross section of the supporting plate (114) is L-shaped, and sealing plates (116) are arranged on the front side and the rear side of the supporting plate (114).

9. The metal powder circulating device for the base shaft type metal 3D printer according to claim 1, wherein: the powder screening machine is characterized in that the feeding port (12) is fixedly connected with a feeding hopper (117), an adjusting plate (118) is arranged at the outlet end of the feeding hopper (117) in a sliding mode, and a fixing bolt (119) matched with the powder screening box (11) is arranged on the adjusting plate (118).

Still be provided with fixed plate (120) on sieve powder frame (15), screen cloth (16) are fixed in between sieve powder frame (15) and fixed plate (120), just pass through fastening bolt (121) between fixed plate (120) and the sieve powder frame (15) and fix and link to each other.

Both sides and the rear side of the powder sieving frame (15) are provided with baffle plates (122).

10. The metal powder circulating device for the base shaft type metal 3D printer according to claim 1, wherein: the circumference of the metering roller (37) is uniformly provided with a plurality of rows of mounting screw holes (310), and the mounting screw holes (310) are internally provided with fastening screws (311) used for fixing the partition plate (38).

Technical Field

The invention relates to the technical field of 3D printing equipment, in particular to a metal powder circulating device for a base shaft type metal 3D printer.

Background

The metal 3D printing technology has the advantages of personalized design, rapid forming and short manufacturing period, is very suitable for manufacturing metal parts with small batch, personalization, complex surfaces and internal structures, and in the process of 3D printing of metal powder, high-energy-density laser directly acts on the metal powder and rapidly scans and moves to rapidly melt and then rapidly condense the metal powder.

After the metal 3D printer finishes printing, the redundant metal powder needs to be recycled so as to be used for next printing, and the recycling effect needs to be ensured so as to enable the redundant metal powder to meet the requirement of next printing; before the metal 3D printer printing is finished, before the metal 3D printer printing, operations such as screening, metering, conveying and the like need to be carried out on metal powder, and the metal powder is supplied to a powder cylinder of a powder laying device/printing chamber of the metal 3D printer.

According to the patent number CN210305756U, the name is a metal powder collecting device of a metal 3D printer, which comprises a horn-shaped powder inlet cover, wherein the lower end of the powder inlet cover is provided with a C-shaped fastener, the powder inlet cover is connected with a powder suction cavity through a pipeline, and a fan blade is arranged in the powder suction cavity; the automatic feeding device has the advantages of reducing labor intensity of workers, improving working efficiency and the like.

But the device's fixed structure, the unable position of adjusting the suction head leads to retrieving to inhale the powder effect relatively poor, and holistic installation fastness remains to improve simultaneously, has certain use limitation.

In the use process of the metal 3D printer, metal powder for printing needs to be continuously conveyed into a corresponding powder bin to ensure continuous work of the metal 3D printer, and in order to ensure smooth printing and meet different quality requirements, different printed parts need to adopt metal powder with different particle sizes, so that the metal powder conveyed to the printer needs to be sieved to meet the use requirements of equipment; can produce a large amount of recovery metal powder after printing the completion simultaneously, but the particle distribution range of retrieving metal powder is wide, needs sieve powder rear to it and can use, and the powder shifter sieve among the prior art efficiency of powder is lower, can not satisfy the operation requirement of printer.

The metal 3D printer needs to continuously convey metal powder for printing to a corresponding powder bin in the using process, so that the metal powder is generally filled in a quantitative powder feeding mode in the actual working process by combining the size of a powder storage bin of the printer in order to avoid the waste of the metal powder, but the filling equipment adopted in the prior art needs to use a large number of electronic components on one hand, so that the equipment is high in complexity and high in price; meanwhile, powder feeding can be carried out after weighing, an intermittent powder feeding mode is adopted, and the powder feeding efficiency is low.

Based on the situation, the invention provides the metal powder circulating device for the base shaft type metal 3D printer, and the metal powder circulating device can effectively solve the problems.

Disclosure of Invention

The invention aims to provide a metal powder circulating device for a base shaft type metal 3D printer. The metal powder circulating device for the base shaft type metal 3D printer is simple in structure and convenient to use, the suction head of the powder suction device extends into the printing cavity, the suction head moves to the position where the metal powder needs to be recovered to recover the metal powder, the metal powder can be stored, transported, screened and stored, the excess metal powder can be recovered after the SLM metal printer finishes printing so as to be used for next printing, the recovery processing effect can be effectively guaranteed, the excess metal powder can meet the requirement of next printing, the metal powder circulating device is matched with the metering powder conveying device to be used, the metal powder can be efficiently screened, metered and conveyed, the qualified metal powder can be provided to the powder cylinder of the powder spreading device (in the SLM cavity) of the metal printer or the powder cylinder of the printing cavity (the printing cavity can also be used as the place where the powder cylinder/powder spreading device temporarily stores the metal powder), a series of operations such as automatic screening, metering, conveying and the like are realized.

The invention is realized by the following technical scheme:

a metal powder circulating device for a base shaft type metal 3D printer comprises a powder suction device, a powder screening machine and a metering powder feeding device;

the powder storage cylinder of the powder suction device is communicated with the feed port of the powder sieving machine through a powder feeding pipe; a vacuum conveyor is arranged on the powder feeding pipe;

the first discharge port and the second discharge port of the sieving machine are communicated with a feed port of the metering powder feeding device through powder feeding pipes; a vacuum conveyor is arranged on the powder feeding pipe between the sieving machine and the metering powder feeding device;

the discharge hole of the metering powder feeding device is communicated with the powder supply hole through a powder feeding pipe; a vacuum conveyor is arranged on the powder feeding pipe between the metering powder feeding device and the powder feeding port;

the powder suction device comprises a second box body, a support is fixedly mounted on the side wall of the second box body, a second shell is fixedly mounted inside the second box body, a second motor is fixedly mounted inside the second shell, a rotating assembly is fixedly connected to an output shaft of the second motor, a powder suction assembly and a second transmission assembly are arranged inside the second box body, the second transmission assembly is in transmission connection with the rotating assembly, the powder suction assembly is communicated with the top of the second shell, a first sleeve block and a second sleeve block are fixedly mounted on the outer surface of the powder suction assembly, the second sleeve block is in sliding connection with the upper surface of the support, a second connecting rod is rotatably connected to the bottom of the first sleeve block through a rotating shaft, the bottom of the second connecting rod is rotatably connected with the second transmission assembly through a rotating shaft, and a powder storage assembly is fixedly connected to the inside of the second box body through a bolt, the powder storage assembly is communicated with the bottom of the second shell through a pipeline.

The powder screening machine comprises a powder screening box, wherein a feed inlet is formed in the top of the powder screening box, and a first discharge port and a second discharge port are formed in the bottom of the powder screening box in parallel; a powder sieving frame is arranged in the powder sieving box in a sliding manner, and a screen is fixedly arranged on the powder sieving frame; a connecting shaft extending out of the powder sieving box is fixedly arranged on one side of the powder sieving frame; the powder sieving box is also fixedly provided with a driving motor, the driving motor is connected with a rotating disc, the rotating disc is eccentrically provided with a connecting rod, and the connecting rod and the connecting shaft are respectively hinged with two ends of the same connecting rod;

the quantitative powder feeding device comprises a storage box and a controller, wherein a feed inlet and a discharge outlet are respectively arranged on the upper side and the lower side of the storage box, a rotating shaft and an adjusting motor which are mutually connected are fixedly arranged on the storage box, and a metering roller is also fixedly arranged on the rotating shaft; the metering roller is uniformly provided with a plurality of partition plates, the storage box is internally provided with an isolation bin matched with the metering roller, and the adjusting motor is connected with the controller.

Preferably, the lateral wall of box has the side door through hinge swivelling joint, the lateral wall fixed mounting of side door has the handle, the surface of support runs through and threaded connection has the gag lever post, the top fixed mounting of gag lever post has the clamp plate, the bottom fixed mounting of second nest of blocks has the dovetail block, the dovetail has been seted up to the upper surface of support.

Preferably, the rotating assembly comprises a central shaft, and a first helical gear and a plurality of fan blades are fixedly mounted on the outer surface of the central shaft.

Preferably, the powder sucking assembly comprises a connecting pipe, one end of the connecting pipe is communicated with a sucking head, and the other end of the connecting pipe is communicated with a hose.

Preferably, the transmission assembly comprises a round rod, the round rod is rotatably connected with the side wall of the shell, a second helical gear is fixedly mounted at one end of the round rod, and a turntable is fixedly mounted at the other end of the round rod.

Preferably, store up the powder subassembly including storing up the powder jar, store up the lateral wall hinge of powder jar and be connected with the baffle in a rotating manner, the surface gomphosis of baffle has ventilative net.

Preferably, the two sides of the powder sieving frame are provided with mutually symmetrical connecting shafts, the powder sieving box is rotatably provided with a rotating shaft, and the rotating shaft is connected with the driving motor through a transmission gear; the two ends of the rotating shaft extend out of the powder sieving box, rotating disks are arranged on the two sides of the rotating shaft, a connecting rod is eccentrically connected with the rotating disks, and the other end of the connecting rod is hinged to the connecting shaft.

Preferably, be provided with the backup pad in the sieve powder case, be provided with the gyro wheel with the backup pad adaptation on the sieve powder frame.

Preferably, the cross section of the supporting plate is L-shaped, and the front side and the rear side of the supporting plate are respectively provided with a sealing plate.

Preferably, the feeding port is fixedly connected with a feeding hopper, an adjusting plate is arranged at the outlet end of the feeding hopper in a sliding mode, and a fixing bolt matched with the powder sieving box is arranged on the adjusting plate.

Preferably, the powder sieving frame is further provided with a fixing plate, the screen is fixed between the powder sieving frame and the fixing plate, and the fixing plate is fixedly connected with the powder sieving frame through a fastening bolt.

Preferably, both sides and the rear side of the powder sieving frame are provided with baffles.

Preferably, the circumferential surface of the metering roller is uniformly provided with a plurality of rows of mounting screw holes, and the mounting screw holes are internally provided with fastening screws for fixing the partition plates.

Preferably, scraping plates made of rubber are arranged around the dividing plate and are in contact with the inner side face of the isolation bin.

Preferably, the adjusting motor is a stepping motor.

Preferably, the storage box is fixedly provided with a fastening sleeve, a locking screw rod is connected to a screw thread in the fastening sleeve, and an annular locking groove matched with the locking screw rod is formed in the rotating shaft.

Preferably, the controller comprises a PLC and a touch screen which are connected through a 485 bus, and the PLC is connected with the stepping motor.

Preferably, the top and the bottom of the isolation bin are symmetrically provided with a material guide opening and a material discharge opening, and the cross sections of the material guide opening and the material discharge opening are both conical.

Compared with the prior art, the invention has the following advantages and beneficial effects:

the metal powder circulating device for the base shaft type metal 3D printer is simple in structure and convenient to use, the suction head of the powder suction device extends into the printing cavity, the suction head moves to the position where the metal powder needs to be recovered to recover the metal powder, the metal powder can be stored, transported, screened and stored, the excess metal powder can be recovered after the SLM metal printer finishes printing so as to be used for next printing, the recovery processing effect can be effectively guaranteed, the excess metal powder can meet the requirement of next printing, the metal powder circulating device is matched with the metering powder conveying device to be used, the metal powder can be efficiently screened, metered and conveyed, the qualified metal powder can be provided to the powder cylinder of the powder spreading device (in the SLM cavity) of the metal printer or the powder cylinder of the printing cavity (the printing cavity can also be used as the place where the powder cylinder/powder spreading device temporarily stores the metal powder), a series of operations such as automatic screening, metering, conveying and the like are realized.

The powder suction device can drive the suction head to reciprocate back and forth through the matching of the rotating assembly, the second transmission assembly, the second connecting rod, the first sleeve block and the like, so that the powder suction effect can be greatly improved, the effective recovery of metal powder is ensured, and more requirements in actual use are met.

1. Compared with the prior art, the powder suction device can drive the suction head (the connecting pipe of the suction head can be made into a telescopic pipe, such as a corrugated pipe, and the like, and can also realize the reception of the movable suction head) to do reciprocating motion back and forth through the matching of the rotating assembly, the second transmission assembly, the second connecting rod, the first sleeve block and the like, so that the powder suction effect can be greatly improved, the effective recovery of metal powder is ensured, more requirements in actual use are met, and the practicability is higher.

2. Compared with the prior art, the powder suction device realizes effective fixation of the bracket and the external substrate through the matching of the limiting rod, the pressing plate and the like, thereby ensuring the stability of the whole equipment; simultaneously through the cooperation of side door and second handle, be convenient for follow-up store up the recovery powder in the powder jar and carry out rapid processing to (sealed), the experience of product feels better, and the suitability is stronger.

The powder screening machine can rapidly screen the printer powder or the printed recovered powder, accurately classify the raw materials, has high powder screening efficiency and ensures that the raw materials meet the use requirements of the printer;

the quantitative powder feeding device solves the problems that powder cannot be fed quantitatively and the powder feeding efficiency is low in the prior art, and by adopting the quantitative powder feeding device, the powder feeding efficiency can be improved, quantitative powder feeding can be realized, and the use requirement of printing equipment is met.

The powder sieving machine comprises a powder sieving box, wherein a powder sieving frame is arranged in the powder sieving box in a sliding mode, a screen is fixedly arranged on the powder sieving frame, a feeding hole is formed in the upper side of the powder sieving box, a first discharging hole and a second discharging hole are formed in the bottom of the powder sieving box, a driving motor is further arranged on the powder sieving box, the driving motor is connected with a rotating disc, the rotating disc is eccentrically connected with a connecting rod, and the connecting rod is hinged with a connecting shaft; when the screen powder rack is used, the driving motor rotates, the eccentrically arranged connecting rod drives the screen powder rack to do reciprocating motion, materials with smaller particle sizes enter the first discharge hole through the screen to be discharged, materials with larger particle sizes are blocked by the screen, and the materials are thrown out of the screen powder rack due to inertia when the screen powder rack turns, and are discharged through the second discharge hole; the invention realizes the quick powder sieving of the material through the reciprocating mechanism, improves the powder sieving efficiency of the material, and has simple structure, reliable work and convenient maintenance.

The powder sieving machine comprises a powder sieving box, wherein a powder sieving frame and a screen are arranged in the powder sieving box in a sliding mode, a feeding hole is formed in the upper side of the powder sieving box, a first discharging hole and a second discharging hole are formed in the bottom of the powder sieving box, a driving motor is further arranged on the powder sieving box, the driving motor is connected with a rotating disc, the rotating disc is eccentrically connected with a connecting rod, and the connecting rod is hinged with a connecting shaft;

when the powder sieving machine is used, the driving motor rotates, the connecting shaft is driven by the connecting rod which is eccentrically arranged to slide horizontally and inwards, so that the powder sieving frame is dragged back and forth, materials with smaller particle sizes enter the first discharge hole through the screen to be discharged in the reciprocating motion process of the powder sieving frame, materials with larger particles are blocked by the screen, and when the powder sieving frame turns, the materials are thrown out from one end of the powder sieving frame under the action of inertia and are discharged through the second discharge hole;

compared with the prior art, the powder sieving machine realizes the rapid powder sieving of materials through the reciprocating mechanism, improves the powder sieving efficiency of the materials, is suitable for the powder sieving of the materials before printing and the powder sieving of the materials recovered after printing, and meets the rapid processing requirement on the recoverable materials; meanwhile, the structure is simple, and the working stability and the reliability are effectively ensured.

According to the powder screening machine, the connecting shafts are arranged on the two sides of the powder screening frame, and the driving motor is connected with the powder screening frame through the rotating shafts respectively, so that on one hand, the two sides of the powder screening frame are stressed, the stress uniformity of the powder screening frame can be effectively improved, the powder screening frame is prevented from being inclined to one side, the smoothness of equipment operation can be improved, and meanwhile, the abrasion of each part can be reduced; on the other hand, the powder screening machine can achieve the purposes through a simple structure, and is simple in structure and convenient to maintain; meanwhile, the synchronous transmission of the powder sieving frame is realized, and the coordination of the movement of the equipment is better.

According to the powder sieving machine, the supporting plate is further arranged in the powder sieving box and is matched with the powder sieving frame, meanwhile, the powder sieving frame is arranged in an L shape, the sealing plates are arranged at the head end and the tail end of the powder sieving frame, on one hand, the supporting plate provides stable support for the operation of the powder sieving frame, and meanwhile, the idler wheels can effectively improve the operation stability of equipment and reduce the abrasion of the equipment; meanwhile, the L-shaped supporting plate and the sealing plates at the head and the tail of the L-shaped supporting plate are effective in limiting the idler wheels, so that the stability and the reliability of connection of the powder sieving frame and the powder sieving box are ensured.

The feeding port of the powder screening machine is also provided with the feeding hopper, the feeding hopper is provided with the adjusting plate in a sliding mode, the adjusting plate is also provided with the fixing bolt, and the size of the opening of the feeding port is controlled through the adjusting plate, so that ordered feeding is realized, the dual requirements of powder screening quality and machining efficiency are met, the working efficiency of equipment is improved, and meanwhile, the powder screening machine is simple to adjust and convenient to operate.

The powder sieving machine is characterized in that the powder sieving frame is also provided with a fixing plate, and the fixing plate clamps the screen, so that on one hand, the screen can be stably limited, the working stability of the screen is ensured, on the other hand, the screen is convenient to disassemble and assemble, and the maintenance of equipment is facilitated.

The powder screening machine is provided with the baffle plates on the two sides and the rear side of the powder screening frame, the two sides and the rear side of the powder screening frame are limited by the baffle plates, unqualified metal powder is prevented from falling to the first discharge hole or the second discharge hole from the two sides and the rear side, and mixing is avoided, so that the powder screening quality is improved.

The quantitative powder feeding device comprises a storage box and a controller, wherein the upper side and the lower side of the storage box are respectively provided with a feeding hole and a discharging hole, the storage box is also provided with a rotating shaft and a motor which are connected with each other, the rotating shaft is fixedly provided with a metering roller and is divided into a plurality of storage bins through a dividing plate, and the storage box is also provided with an isolation bin matched with the metering roller; when the invention is used, the material storage bin opposite to the feeding hole is filled with the material, and other material storage bins are in an empty bin state; the conversion of different storage bins is realized by rotating a fixed angle, and meanwhile, the storage bins filled with materials are rotated to the direction opposite to the discharge port to realize the discharge; the storage bin has fixed specification, so that quantitative discharge is realized; compared with the prior art, the quantitative discharging device not only realizes the rapid quantitative discharging operation, but also has simple structure and greatly improves the reliability and the stability of the device.

The quantitative powder feeding device comprises a storage box and a controller, wherein the upper side and the lower side of the storage box are respectively provided with a feeding hole and a discharging hole, the storage box is also provided with a rotating shaft and a motor which are connected with each other, the rotating shaft is fixedly provided with a metering roller and is divided into a plurality of storage bins through a dividing plate, and the storage box is also provided with an isolation bin matched with the metering roller;

when the quantitative powder feeding device is used, materials enter the storage box from the feeding hole, and meanwhile, the storage bin, which is over against the feeding hole, on the metering roller is filled; meanwhile, the quantitative powder feeding device isolates other storage bins which are not communicated with the storage box through the isolation bin; when feeding is needed, the motor is adjusted to rotate by a fixed angle, the storage bin filled with materials leaves the storage box and is separated from the outside, and other storage boxes are communicated with the storage box to finish material filling; the method divides the materials into quantitative portions, and the material storage bin for storing the materials is opposite to the discharge port by rotating the metering roller, so that the material discharging operation is completed;

compared with the prior art, the quantitative powder feeding device avoids using electronic devices such as a weight sensor and the like through ingenious structural design, so that the cost of the whole set of equipment is reduced, the control of the whole set of equipment is simplified, and the reliability and the stability of the equipment are improved; the quantitative powder feeding device can realize feeding operation with different weights by additionally arranging the partition plate, can realize feeding operation with different weights by adjusting the rotation angle of the motor, has stable feeding amount, and is particularly suitable for large-scale industrial production.

Meanwhile, the quantitative powder feeding device realizes the addition of materials in the rotating process of the roller, and the whole set of equipment is in a continuous motion state, so that the feeding efficiency is higher compared with the traditional intermittent material feeding mode; the quantitative powder feeding device is arranged in the closed storage box for material filling, and material volatilization and waste do not exist.

According to the quantitative powder feeding device, the metering roller is provided with the plurality of rows of mounting screw holes, so that different partition plates can be conveniently mounted according to needs, and feeding requirements of different specifications are met.

The scraping plates are arranged on the periphery of the dividing handle of the quantitative powder feeding device, so that on one hand, the sealing performance of the storage bin can be improved through the scraping plates, the leakage of materials can be avoided, and the waste of the materials is avoided; meanwhile, the feeding precision can be ensured.

The adjusting motor of the quantitative powder feeding device is a stepping motor, and the stepping motor can meet the rotation precision required by the quantitative powder feeding device, so that the control precision of the whole set of equipment is improved, and the feeding precision is further improved.

The storage box of the quantitative powder feeding device is provided with the fastening sleeve, the fastening sleeve disc can be connected with the locking screw rod in a threaded manner, and meanwhile, the rotating shaft is also provided with the locking groove.

The controller of the quantitative powder feeding device comprises the PLC and the touch screen, so that the rotation parameters can be conveniently set by workers according to needs, and the operability of equipment is improved.

According to the quantitative powder feeding device, the material guide openings and the material discharge openings are symmetrically formed in the top and the bottom of the isolation bin, and the cross sections of the material guide openings and the material discharge openings are all conical, so that on one hand, materials are conveniently guided to the metering roller, and material overstocking is avoided; on the other hand conical discharge gate can enlarge the field of vision of maintainer, satisfies the maintenance requirement of equipment, also makes things convenient for the staff to change simultaneously or install the partition plate.

Drawings

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

FIG. 2 is a schematic view of the overall structure of the powder sucking device according to the present invention;

FIG. 3 is a schematic structural view of a powder storage assembly of the powder suction device according to the present invention;

FIG. 4 is a schematic view of the dovetail block and dovetail groove structure of the powder suction device of the present invention.

FIG. 5 is a schematic view of the construction of the powder sifter of the present invention;

FIG. 6 is a schematic view of the internal structure of the powder sieving box of the powder sieving machine according to the present invention;

FIG. 7 is a schematic front view of a powder sifting box of the powder sifter according to the present invention;

FIG. 8 is a schematic structural view of another embodiment of the powder sifter of the present invention;

FIG. 9 is a schematic view of the internal structure of a powder sifting box of another embodiment of the powder sifter of the present invention;

FIG. 10 is a schematic front view of a powder sifting box of another embodiment of the powder sifter of the present invention;

FIG. 11 is a schematic structural view of the quantitative powder feeder according to the present invention;

FIG. 12 is a schematic view of a metering roller of the quantitative powder feeding device according to the present invention;

FIG. 13 is a schematic structural view of another embodiment of the quantitative powder feeding device according to the present invention;

FIG. 14 is a schematic side view of another embodiment of the powder metering device of the present invention.

In the figure: 1. screening machine; 2. a powder suction device; 03. a metering powder feeding device; 3. a powder feeding pipe; 301. a powder supply port; 4. a vacuum conveyor; 05 a printing chamber;

21. a box body; 22. a support; 23. a housing; 24. a motor; 25. a rotating assembly; 26. a powder suction assembly; 27. a transmission assembly; 28. a connecting rod; 29. a first nest block; 210. a second nest block; 211. a pipeline; 212. a powder storage assembly; 213. a side door; 214. a handle; 215. a limiting rod; 216. pressing a plate; 217. a dovetail block; 218. a dovetail groove; 2501. a central shaft; 2502. a first helical gear; 2503. a fan blade; 2601. a connecting pipe; 2602. a suction head; 2603. a hose; 2701. a round bar; 2702. a second helical gear; 2703. a turntable; 21201. a powder storage cylinder; 21202. a partition plate; 21203. a breathable net;

11. a powder sieving box 12, a feeding hole 13, a first discharging hole 14, a second discharging hole 15, a powder sieving frame 16, a screen mesh 17, a connecting shaft 18, a driving motor 19, a rotating disc 110, a connecting rod 111, a connecting rod 112, a rotating shaft 113, a transmission gear 114, a supporting plate 115, a roller 116, a sealing plate 117, a hopper 118, an adjusting plate 119, a fixing bolt 120, a fixing plate 121, a fastening bolt 122 and a baffle plate;

31. the device comprises a material storage box 32, a controller 33, a feeding port 34, a discharging port 35, a rotating shaft 36, a regulating motor 37, a metering roller 38, a partition plate 39, a separation bin 310, an installation screw hole 311, a fastening screw 312, a scraping plate 313, a fastening sleeve 314, a locking screw 315, a locking groove 316, a PLC 317, a touch screen 318, a material guiding port 319 and a discharging port.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Example 1:

as shown in fig. 1 to 14, the metal powder circulating device for the base shaft type metal 3D printer comprises a powder suction device, a powder sieving machine and a metering powder feeding device;

the powder storage cylinder of the powder suction device is communicated with the feed port of the powder sieving machine through a powder feeding pipe; a vacuum conveyor is arranged on the powder feeding pipe;

the first discharge port and the second discharge port of the sieving machine are communicated with a feed port of the metering powder feeding device through powder feeding pipes; a vacuum conveyor is arranged on the powder feeding pipe between the sieving machine and the metering powder feeding device;

the discharge hole of the metering powder feeding device is communicated with the powder supply hole through a powder feeding pipe; a vacuum conveyor is arranged on the powder feeding pipe between the metering powder feeding device and the powder feeding port;

the powder suction device comprises a second box body, a support is fixedly mounted on the side wall of the second box body, a second shell is fixedly mounted inside the second box body, a second motor is fixedly mounted inside the second shell, a rotating assembly is fixedly connected to an output shaft of the second motor, a powder suction assembly and a second transmission assembly are arranged inside the second box body, the second transmission assembly is in transmission connection with the rotating assembly, the powder suction assembly is communicated with the top of the second shell, a first sleeve block and a second sleeve block are fixedly mounted on the outer surface of the powder suction assembly, the second sleeve block is in sliding connection with the upper surface of the support, a second connecting rod is rotatably connected to the bottom of the first sleeve block through a rotating shaft, the bottom of the second connecting rod is rotatably connected with the second transmission assembly through a rotating shaft, and a powder storage assembly is fixedly connected to the inside of the second box body through a bolt, the powder storage assembly is communicated with the bottom of the second shell through a pipeline.

The powder screening machine comprises a powder screening box, wherein a feed inlet is formed in the top of the powder screening box, and a first discharge port and a second discharge port are formed in the bottom of the powder screening box in parallel; a powder sieving frame is arranged in the powder sieving box in a sliding manner, and a screen is fixedly arranged on the powder sieving frame; a connecting shaft extending out of the powder sieving box is fixedly arranged on one side of the powder sieving frame; the powder sieving box is also fixedly provided with a driving motor, the driving motor is connected with a rotating disc, the rotating disc is eccentrically provided with a connecting rod, and the connecting rod and the connecting shaft are respectively hinged with two ends of the same connecting rod;

the quantitative powder feeding device comprises a storage box and a controller, wherein a feed inlet and a discharge outlet are respectively arranged on the upper side and the lower side of the storage box, a rotating shaft and an adjusting motor which are mutually connected are fixedly arranged on the storage box, and a metering roller is also fixedly arranged on the rotating shaft; the metering roller is uniformly provided with a plurality of partition plates, the storage box is internally provided with an isolation bin matched with the metering roller, and the adjusting motor is connected with the controller.

Example 2:

as shown in fig. 1 to 14, the metal powder circulating device for the base shaft type metal 3D printer comprises a powder suction device, a powder sieving machine and a metering powder feeding device;

the powder storage cylinder of the powder suction device is communicated with the feed port of the powder sieving machine through a powder feeding pipe; a vacuum conveyor is arranged on the powder feeding pipe;

the first discharge port and the second discharge port of the sieving machine are communicated with a feed port of the metering powder feeding device through powder feeding pipes; a vacuum conveyor is arranged on the powder feeding pipe between the sieving machine and the metering powder feeding device;

the discharge hole of the metering powder feeding device is communicated with the powder supply hole through a powder feeding pipe; a vacuum conveyor is arranged on the powder feeding pipe between the metering powder feeding device and the powder feeding port;

a suction head of the powder suction device can directly extend into the printing cavity to suck redundant metal powder in the printing cavity; the powder feeding pipe is communicated with the printing cavity to suck redundant metal powder in the printing cavity;

the powder supply port can directly extend into the printing chamber to supply powder to structures such as a powder spreading device in the printing chamber; in practical application, the printing chamber can also be used as a place for temporarily storing metal powder of the powder cylinder/powder spreading device, namely the printing base shaft is positioned in the whole printing chamber, and the printing chamber can also be used as a powder cylinder, and the metal powder can be circulated by rotating and sticking the powder (namely spreading the powder).

As shown in fig. 2-4, the powder suction device of the present invention includes a second box, a bracket is fixedly mounted on a side wall of the second box, a second housing is fixedly mounted inside the second box, a second motor is fixedly mounted inside the second housing, an output shaft of the second motor is fixedly connected with a rotating assembly, a powder suction assembly and a second transmission assembly are disposed inside the second box, the second transmission assembly is in transmission connection with the rotating assembly, the powder suction assembly is communicated with a top of the second housing, a first sleeve block and a second sleeve block are fixedly mounted on an outer surface of the powder suction assembly, the second sleeve block is in sliding connection with an upper surface of the bracket, a second connecting rod is rotatably connected to a bottom of the first sleeve block through a rotating shaft, a bottom of the second connecting rod is rotatably connected to the second transmission assembly through a rotating shaft, a powder storage assembly is fixedly connected to an inside of the second box through a bolt, and the powder storage assembly is communicated with a bottom of the second housing through a pipeline.

Wherein, the surface of support runs through and threaded connection has the gag lever post, and the top fixed mounting of gag lever post has the clamp plate. When the box is used, the bracket and the external base plate are effectively fixed through the matching of the limiting rod, the pressing plate and other structures, so that the second box body is quickly installed, and the overall firmness is better.

Specifically, a dovetail block is fixedly mounted at the bottom of the second sleeve block, and a dovetail groove is formed in the upper surface of the support. The rotating assembly comprises a central shaft, and a first helical gear and a plurality of fan blades are fixedly mounted on the outer surface of the central shaft. The powder absorbing assembly comprises a connecting pipe, one end of the connecting pipe is communicated with a suction head, and the other end of the connecting pipe is communicated with a second hose. The second transmission assembly comprises a round rod, the round rod is rotatably connected with the side wall of the second shell, a second helical gear is fixedly mounted at one end of the round rod, and a turntable is fixedly mounted at the other end of the round rod. When the powder collecting device is used, the second motor is started to drive the central shaft, the first helical gear and the plurality of fan blades to start rotating, and the fan blades are matched with the second hose, the connecting pipe and the suction head to collect metal powder and guide the metal powder from the second shell to the powder storage assembly through the pipeline; the first helical gear and the second helical gear are meshed to drive the turntable to synchronously rotate, and the connecting pipe and the suction head are driven to reciprocate back and forth under the matching of structures such as the turntable, the second connecting rod, the first sleeve block, the rotating shaft and the like, so that the powder recycling and sucking effect can be greatly improved, and the effective recycling of metal powder is ensured; in the process, the dovetail block, the dovetail groove and other structures are matched, so that the stability of the connecting pipe and the suction head in the moving process can be effectively improved, and the experience of the product is better.

Specifically, the side wall of the second box body is rotatably connected with a side door through a hinge, and a second handle is fixedly mounted on the side wall of the side door. Store up the powder subassembly including storing up the powder jar, store up the lateral wall hinge of powder jar and changeing the connection and have the baffle, the surperficial gomphosis of baffle has ventilative net. When metal powder flows into the inside of the powder storage tank through the pipeline, the metal powder is effectively blocked under the action of the breathable net, and the side door is opened through the second handle, so that the partition plate can be rotated, and the metal powder in the powder storage tank is quickly treated.

The specific working principle and the using method of the powder suction device are as follows: when the second box body is used, the support and the external substrate are effectively fixed through the matching of structures such as the limiting rod and the pressing plate, and the second box body is further quickly installed; then a second motor is started to drive a central shaft, a first helical gear and a plurality of fan blades to start rotating, the fan blades are matched with a second hose, a connecting pipe and a suction head (moved to a position where metal powder needs to be recovered) to recover the metal powder, and the metal powder is guided to a powder storage cylinder from a second shell through a pipeline; the first helical gear and the second helical gear are meshed to drive the turntable to synchronously rotate, and the connecting pipe and the suction head are driven to reciprocate back and forth under the matching of structures such as the turntable, the second connecting rod, the first sleeve block, the rotating shaft and the like, so that the powder recycling and sucking effect can be greatly improved, and the effective recycling of metal powder is ensured; when metal powder flowed into the inside of storing up the powder jar, effectively blocked under the effect of ventilative net, and open the side door through the second handle, can rotate the baffle, carry out rapid draing to the metal powder of storing up the inside of powder jar, easy operation just satisfied more demands in the in-service use, the practicality is higher.

The powder screening machine is structurally shown in fig. 4 to 7, and comprises a powder screening box, wherein a feeding hole is formed in the top of the powder screening box, and a first discharging hole and a second discharging hole are formed in the bottom of the powder screening box in parallel; support plates are arranged on two sides of the powder sieving box, the cross sections of the support plates are L-shaped, and the front end and the rear end of each support plate are sealed by sealing plates; a powder sieving frame is arranged in the powder sieving box, rolling wheels are arranged on two sides of the powder sieving frame and are inserted into the supporting plate, so that the powder sieving frame is slidably connected with the powder sieving box; a screen is fixedly arranged on the powder screening frame, a first discharge hole is formed right below the screen, and the second discharge hole is positioned at the rear side of the first discharge hole;

one side of the powder sieving box is also provided with a chute, one side of the powder sieving frame is provided with a connecting shaft, the connecting shaft extends out of the powder sieving box through the chute, the powder sieving box is also fixedly provided with a driving motor, an output shaft of the driving motor is fixedly connected with a rotating disc, the rotating disc is eccentrically provided with a connecting rod, the connecting rod is hinged with a connecting rod, and the other end of the connecting rod is hinged with the connecting shaft, so that the driving motor is in power connection with the powder sieving frame;

further, in another embodiment, the powder screening machine, as shown in fig. 8 to 10, includes a powder screening box, a feed inlet is disposed at the top of the powder screening box, a hopper is fixedly connected to the feed inlet, an adjusting plate is slidably disposed at an outlet end of the hopper, and a fixing bolt adapted to the powder screening box is disposed on the adjusting plate;

the bottom of the powder sieving box is provided with a first discharge port and a second discharge port in parallel, a powder sieving frame is connected in the powder sieving box in a sliding manner through a support plate, one side of the powder sieving frame, which is close to the second discharge port, is provided with an opening, and the other three sides of the powder sieving frame are fixedly provided with baffles; meanwhile, the powder sieving frame is also provided with a fixing plate, a corresponding connecting hole is formed between the fixing plate and the powder sieving frame, and a fastening bolt is arranged in the connecting hole; meanwhile, the screen mesh is prevented from being arranged between the fixed plate and the powder sieving frame, so that the screen mesh is fixed through the fixed plate;

sliding grooves are symmetrically formed in two sides of the powder sieving box, connecting shafts corresponding to the sliding grooves are arranged on two sides of the powder sieving frame, a driving motor is fixedly arranged on the powder sieving box, a rotating shaft is rotatably arranged on the powder sieving box, and the rotating shaft is in power connection with the driving motor through a transmission gear; the both ends of rotation axis are stretched out the both sides of sieve powder case, and its both sides are all fixed and are provided with the rotary disk, and equal eccentric connection has the connecting rod on the rotary disk, and it has the connecting rod to articulate on the connecting rod, the other end and the connecting axle of connecting rod are articulated to realize that driving motor is connected with the power of sieve powder frame.

When the screen powder frame is used, the driving motor rotates, the connecting shaft is driven by the connecting rod which is eccentrically arranged to slide horizontally and inwards, so that the screen powder frame is dragged back and forth, materials with smaller particle sizes enter the first discharge hole through the screen to be discharged in the reciprocating motion process of the screen powder frame, materials with larger particles are blocked by the screen, and when the screen powder frame turns, the materials are thrown out from one end of the screen powder frame under the action of inertia and are discharged through the second discharge hole;

compared with the prior art, the invention realizes the rapid powder sieving of the material through the reciprocating mechanism, improves the powder sieving efficiency of the material, is not only suitable for sieving the material before printing, but also suitable for sieving the recovered material after printing, and meets the rapid processing requirement of the recoverable material; meanwhile, the structure is simple, and the working stability and the reliability are effectively ensured.

The specific structure of the quantitative powder feeding device is shown in fig. 11 and 12, and the quantitative powder feeding device comprises a storage box and a controller, wherein the upper side and the lower side of the storage box are respectively provided with a corresponding feeding port and a corresponding discharging port, the middle part of the storage box is fixedly provided with an isolation bin, the middle part of the isolation bin is of a circular hollow structure, and the upper side and the lower side of the isolation bin are respectively communicated with the storage box and are respectively opposite to the feeding port and the discharging port;

the storage box is rotatably provided with a rotating shaft, a metering roller is fixedly arranged on the rotating shaft, the metering roller is inserted into the hollow structure of the isolation bin, and meanwhile, the rotating shaft is connected with an adjusting motor fixed on the storage box; the adjusting motor is a stepping motor;

a plurality of rows of mounting screw holes are uniformly formed in the surface of the metering roller, fastening screws are arranged in the mounting screw holes, partition plates are fixedly connected through the fastening screws, and included angles between any two adjacent partition plates are equal; meanwhile, a controller is also arranged on the material storage box and comprises a PLC and a touch screen which are connected through a bus, and the PLC is connected with the stepping motor;

further, in another embodiment, the specific structure of the quantitative powder feeding device is as shown in fig. 12 to 14, and the quantitative powder feeding device includes a storage box and a controller, wherein the upper side and the lower side of the storage box are respectively provided with a corresponding feeding port and a corresponding discharging port, the middle part of the storage box is fixedly provided with an isolation bin, the middle part of the isolation bin is a circular hollow structure, the upper side and the lower side of the isolation bin are respectively communicated with the storage box and respectively face the feeding port and the discharging port, the upper side and the lower side of the isolation bin are respectively provided with a material guiding port and a material discharging port, and the cross sections of the material guiding port and the material discharging port;

the storage box is also provided with an adjusting motor and a rotating shaft which are connected with each other, the rotating shaft is fixedly connected with a plurality of partition plates through fastening screws, the peripheries of the partition plates are all connected with scraping plates, the scraping plates are made of rubber, and the end surfaces of the scraping plates are in contact with the inner surface of the isolation bin, so that the sealing property is improved;

and meanwhile, a fastening sleeve is fixedly arranged on the storage box, a locking screw is connected with the inner thread of the fastening sleeve, and an annular locking groove matched with the locking screw is formed in the rotating shaft.

When the metering roller is used, materials enter the storage box from the feeding hole, and the storage bin, which is over against the feeding hole, on the metering roller is filled; meanwhile, other storage bins which are not communicated with the storage box are isolated by the isolation bin; when feeding is needed, the motor is adjusted to rotate by a fixed angle, the storage bin filled with materials leaves the storage box and is separated from the outside, and other storage boxes are communicated with the storage box to finish material filling; the method divides the materials into quantitative portions, and the material storage bin for storing the materials is opposite to the discharge port by rotating the metering roller, so that the material discharging operation is completed;

compared with the prior art, the invention avoids using electronic devices such as weight sensors and the like through ingenious structural design, thereby not only reducing the cost of the whole set of equipment, but also simplifying the control of the whole set of equipment and improving the reliability and stability of the equipment; the invention can realize the feeding operation with different weights by adding the partition plate, can realize the feeding operation with different weights by adjusting the rotation angle of the motor, has stable feeding amount, and is particularly suitable for large-scale industrial production.

Meanwhile, the feeding of materials is realized in the rotating process of the roller, and the whole set of equipment is in a continuous motion state, so that the feeding efficiency is higher compared with the traditional intermittent material feeding mode; the material filling device is positioned in the closed material storage box, and the volatilization and waste of the material are avoided.

According to the description and the drawings of the invention, the metal powder circulating device for the base shaft type metal 3D printer can be easily manufactured or used by a person skilled in the art, and can generate the positive effects recorded by the invention.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.