A micro-nano copper powder grading device

Abstract

The application discloses a micro-nano copper powder grading device, and particularly relates to the technical field of copper powder production, which comprises a grading box, and an inclined ring seat for guiding the falling of micro-nano copper powder is arranged on the surface of the middle part of the inner cavity of the grading box. The micro-nano copper powder falls into the grading box through the inlet, is guided to fall into the extrusion cavity through the inclined ring seat and the conical grinding seat, and the conical grinding seat reciprocatingly swings and drives the stirring rod on the rotating rod to synchronously reciprocatingly swing, so as to stir and move the micro-nano copper powder in the inclined ring seat. The micro-nano copper powder in the extrusion cavity is extruded through the conical grinding seat and the bottom of the inclined ring seat, and the extrusion qualified particle size micro-nano copper powder is formed. The transmission plate drives the reciprocating pushing of the extrusion qualified particle size micro-nano copper powder, and the micro-nano copper powder is pushed into the discharge screen hole. The particle size of the micro-nano copper powder is smaller than the aperture of the discharge screen hole, so that the micro-nano copper powder is conveniently fallen.

Description

Technical Field

[0001] This invention relates to the field of copper powder production technology, specifically to a micro / nano copper powder grading device. Background Technology

[0002] Micro- and nano copper powders not only possess the excellent electrical and thermal conductivity, corrosion resistance, antibacterial properties, and non-magnetic characteristics of copper metal, but also have low melting points and high activity. They are widely used in fields such as superhard materials, multilayer ceramic capacitors (MLCCs), conductive adhesives, integrated circuit printing plates, shielding materials, lubricants, catalysts, and medical materials.

[0003] A search revealed that the invention patent with publication number CN106076825A discloses an intelligent copper powder screening machine that can screen copper powder after coarse processing. It is flexible in movement, simple to control, has strong vibration, fast screening speed and strong load-bearing capacity, and has a very good copper powder screening effect, further improving the purity and quality of copper powder.

[0004] In the above technical solution, the copper powder is directly placed into the vibrating screen, which lacks the compression and grinding of the copper powder. In this way, the screening of copper powder is too exposed. During the vibration process, the copper powder will scatter. It is necessary to place the copper powder in a box for screening. During the classification process, the copper powder will also accumulate and needs to be dispersed. Summary of the Invention

[0005] The purpose of this invention is to provide a micro / nano copper powder classification device to solve the problems mentioned in the background art.

[0006] This invention can be achieved through the following technical solution: a micro / nano copper powder grading device, comprising a grading box, an inclined ring seat for guiding the micro / nano copper powder to fall is provided on the surface of the middle part of the grading box, and a feed inlet is provided on the top surface of the grading box. A discharge chamber is provided below the inclined ring seat, and an annular plate is fixedly provided on the bottom surface of the inclined ring seat. A reciprocating conical grinding seat is rotatably installed above the annular plate. Multiple transmission plates for pushing materials are installed on the bottom surface of the conical grinding seat, and the outside of the conical grinding seat and the inclined end of the inclined ring seat form an extrusion chamber. Multiple discharge sieve holes communicating with the extrusion chamber and used for the discharge of micro / nano copper powder are provided through the surface of the annular plate.

[0007] A further technical improvement of the present invention is that: two rows of vertically arranged rotating rods are installed on the top surface of the conical grinding seat, with two rods in each row. Each rotating rod has multiple equidistant stirring rods fixed to its surface for stirring micro-nano copper powder. Above the inclined ring seat, a drive seat and a driven seat driven by a servo motor are installed. Both the drive seat and the driven seat have drive bends installed on their surfaces. Fixed rods passing through the gap between the two rows of rotating rods are installed on the bent ends of the two drive bends. The two drive bends are centrally symmetrical about the midpoint of the fixed rods.

[0008] A further technical improvement of the present invention is that: a convex ring seat communicating with the feed inlet is provided on the top surface of the inner cavity of the grading box, a concave seat is rotatably sleeved on the outside of the convex ring seat, and the same guide ring plate is fixedly connected to the top of the two rows of rotating rods. The top of the guide ring plate is fixedly connected to the bottom surface of the concave seat, and the guide ring plate is composed of two semi-circular rings.

[0009] A further technical improvement of the present invention is that: the top of two adjacent rotating rods in the same row is provided with a positioning rod one and a positioning rod two that fit together. The positioning rod one and the positioning rod two are configured as a U-shaped structure. A positioning pin is provided on the top surface of each rotating rod. The U-shaped end surface of the positioning rod one and the positioning rod two is provided with a positioning hole that engages with the positioning pin.

[0010] A further technical improvement of the present invention is that: a positioning plate is rotatably mounted on the bottom end of the positioning rod one via a damping pin, the surface of the positioning plate is provided with a through hole, the bottom end of the positioning rod two is provided with a cavity, a spring is installed inside the cavity, and a positioning block extending into the through hole is fixedly connected to the end of the spring.

[0011] A further technical improvement of the present invention is that: an inclined screening screen is installed on the top of the material discharge chamber, and rodless cylinders with X-axis guidance and Y-axis guidance are installed above and below the screening screen, respectively. Each rodless cylinder is slidably sleeved with a slider seat, and a telescopic guide scraping mechanism for cleaning the surface of the screening screen is installed on the bottom surface of the slider seat.

[0012] A further technical improvement of the present invention is that: the telescopic guide scraper mechanism includes a miniature electric push rod fixedly installed on the bottom surface of the slider seat, the telescopic end of the miniature electric push rod is fixedly connected to a scraper plate that is in contact with the surface of the inclined screening screen, and a discharge port is provided on one side surface of the grading box, the bottom surface of the inner cavity of the discharge port is flush with the end of the screening screen.

[0013] A further technical improvement of the present invention is that: the bottom surface of the inner cavity of the material discharge chamber is inclined, and the bottom of the grading box and the surface adjacent to the discharge port one are provided with discharge port two, which communicates with the bottom surface of the inner cavity of the material discharge chamber.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Micro-nano copper powder falls into the classifier box from the feed inlet for classification. Guided by the inclined ring seat and the conical grinding seat, it falls into the extrusion chamber. The conical grinding seat swings back and forth, driving the stirring rod on the rotating rod to swing back and forth synchronously, stirring and agitating the micro-nano copper powder entering the inclined ring seat, guiding the movement of the micro-nano copper powder. The micro-nano copper powder in the extrusion chamber is extruded by the conical grinding seat and the bottom of the inclined ring seat, forming micro-nano copper powder of qualified particle size. The transmission plate drives the micro-nano copper powder of qualified particle size to push back and forth, pushing the micro-nano copper powder into the discharge screen hole. The diameter of the discharge screen hole is larger than the particle size of the micro-nano copper powder, which facilitates the falling of the micro-nano copper powder.

[0016] 2. Insert the positioning pin into the positioning hole of the U-shaped end of positioning rod 2 and positioning rod 1. At this time, the ends of positioning rod 2 and positioning rod 1 are in contact. Then, move the positioning plate. The positioning plate and positioning rod 1 will rotate. At the same time, the positioning block is pressed. The positioning block squeezes the spring. The end of the positioning block enters the cavity, which makes it easy for the end of the positioning plate to reach the bottom of the positioning block. When the positioning block and the through hole are vertically collinear, the spring loses the external force and returns to its original deformation, so that the positioning block enters the through hole. This realizes the installation of two adjacent rotating rods and increases the stability of the guide ring plate installation.

[0017] 3. The slider seat is driven to reciprocate by a rodless cylinder guided by the X-axis. The miniature electric push rod pushes the scraper plate to rise and fall adaptively, cleaning the micro-nano copper powder material remaining on the surface of the screening screen. The micro-nano copper powder remaining after screening falls out through the first discharge port, while the screened micro-nano copper powder falls into the discharge chamber. The scraper plate on the corresponding slider seat is driven to extend and retract synchronously by the rodless cylinder guided by the Y-axis, pushing the graded micro-nano copper powder out of the inner cavity of the discharge chamber and out through the second discharge port. Since the discharge ports one and two are set in different directions, the placement of the collection box is not affected during discharge, making it easy to distinguish the graded micro-nano copper powder. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0021] Figure 3 This is a three-dimensional structural diagram of the rotating rod and the second positioning rod of the present invention;

[0022] Figure 4This is a three-dimensional structural diagram of the inclined ring seat and the annular plate of the present invention;

[0023] Figure 5 This is a three-dimensional structural diagram of the conical seat and the annular plate of the present invention;

[0024] Figure 6 For the present invention Figure 1 A magnified view of a section at point B.

[0025] In the diagram: 1. Grading box; 2. Convex ring seat; 3. Concave seat; 4. Guide ring plate; 5. Rotating rod; 6. Drive bend seat; 7. Fixed rod; 8. Inclined ring seat; 9. Annular plate; 10. Conical grinding seat; 11. Discharge chamber; 12. Positioning rod one; 13. Positioning rod two; 14. Spring; 15. Positioning plate; 16. Positioning block; 17. Through hole; 18. Positioning hole; 19. Positioning pin; 20. Transmission plate; 21. Stirring rod; 22. Discharge sieve hole; 23. Rodless cylinder; 24. Sliding block seat; 25. Miniature electric push rod; 28. Scraper plate; 29. ​​Screening screen; 30. Discharge port one. Detailed Implementation

[0026] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0027] Please see Figures 1-6As shown, this invention provides a micro / nano copper powder grading device, including a grading box 1. An inclined ring seat 8 for guiding the micro / nano copper powder to fall is provided on the surface of the middle part of the inner cavity of the grading box 1. An inlet is provided on the top surface of the grading box 1. A discharge chamber 11 is provided below the inclined ring seat 8. An annular plate 9 is fixedly connected to the bottom surface of the inclined ring seat 8. A reciprocating conical grinding seat 10 is rotatably mounted above the annular plate 9. Multiple transmission plates 20 for pushing materials are installed on the bottom surface of the conical grinding seat 10. The outer surface of the conical grinding seat 10 and the inclined end of the inclined ring seat 8 form a squeezing chamber. Two rows of vertically arranged rotating rods 5 are installed on the top surface of the conical grinding seat 10, with two rods in each row. Multiple equidistant stirring rods 21 for stirring the micro / nano copper powder are fixedly connected to the surface of each rotating rod 5. Multiple rods communicating with the squeezing chamber and used for stirring the micro / nano copper powder are provided through the surface of the annular plate 9. The micro-nano copper powder falls from the feed inlet into the grading box 1 for grading through the discharge sieve hole 22. Guided by the inclined ring seat 8 and the conical grinding seat 10, it falls into the extrusion chamber. The conical grinding seat 10 swings back and forth, driving the stirring rod 21 on the rotating rod 5 to swing back and forth synchronously, stirring and agitating the micro-nano copper powder entering the inclined ring seat 8, guiding the movement of the micro-nano copper powder. The micro-nano copper powder in the extrusion chamber is extruded by the conical grinding seat 10 and the bottom of the inclined ring seat 8, forming micro-nano copper powder of qualified particle size. The transmission plate 20 drives the micro-nano copper powder of qualified particle size to push back and forth, pushing the micro-nano copper powder into the discharge sieve hole 22. The diameter of the discharge sieve hole 22 is larger than the particle size of the micro-nano copper powder, which facilitates the falling of the micro-nano copper powder, allowing the micro-nano copper powder to enter the feeding chamber 11 for grading and screening, and then for subsequent grading and processing.

[0028] Above the inclined ring seat 8 are a drive seat and a driven seat driven by a servo motor. Drive bend seats 6 are mounted on the surfaces of both the drive seat and the driven seat. Fixed rods 7, passing through the gap between the two rows of rotating rods 5, are mounted on the bent ends of the two drive bend seats 6. The two drive bend seats 6 are centrally symmetrical about the midpoint of the fixed rods 7. A convex ring seat 2 communicating with the feed inlet is provided on the top surface of the inner cavity of the grading box 1. A concave seat 3 is rotatably sleeved on the outside of the convex ring seat 2. The top ends of the two rows of rotating rods 5 are fixedly connected to the same guide ring plate 4. The top end of the guide ring plate 4 is fixedly connected to the bottom surface of the concave seat 3. The guide ring plate 4 consists of two semicircular rings, and the conical grinding seat 10 within it is connected to the drive seat. The connected drive bend seat 6 drives the fixed rod 7 to rotate. The fixed rod 7 passes through the gap between the two rows of rotating rods 5. Since the drive bend seat 6 is centrally symmetrically arranged, when the fixed rod 7 rotates, the drive bend seat 6 connected to the drive seat moves from bottom to top and then to bottom. The drive bend seat 6 connected to the driven seat moves in the opposite direction. Through this structural design, the reciprocating swing of the rotating rod 5 can be realized. The rotating rod 5 drives the bottom conical grinding seat 10 and the guide ring plate 4 to move synchronously. The concave seat 3 connected to the top of the guide ring plate 4 slides back and forth in the convex ring seat 2, which helps to support the stability of the two rows of rotating rods 5 and the conical grinding seat 10.

[0029] On the top of two adjacent rotating rods 5 in the same row, there are mutually fitting positioning rods 12 and 13. Positioning rods 12 and 13 are U-shaped structures. A positioning pin 19 is provided on the top surface of each rotating rod 5. Positioning holes 18 for insertion and engagement with the positioning pins 19 are provided on the U-shaped end surfaces of positioning rods 12 and 13. A positioning plate 15 is rotatably mounted on the bottom end of positioning rod 12 via a damping pin. A through hole 17 is provided on the surface of positioning plate 15. A cavity is provided on the bottom end of positioning rod 13. A spring 14 is installed inside the cavity. A positioning block 16 extending into the through hole 17 is fixed to the end of the spring 14. This positions the guide ring plates 4 of the two semi-circular rings... After the ends are fitted together, the positioning holes 18 on the U-shaped ends of positioning rod 13 and positioning rod 12 are inserted and installed with positioning pins 19. At this time, the ends of positioning rod 13 and positioning rod 12 are fitted together. Then, the positioning plate 15 is moved, and the positioning plate 15 and positioning rod 12 rotate. At the same time, the positioning block 16 is pressed, and the positioning block 16 squeezes the spring 14. The end of the positioning block 16 enters the cavity, which makes it easier for the end of the positioning plate 15 to reach directly below the positioning block 16. When the positioning block 16 and the through hole 17 are vertically collinear, the spring 14 loses the external force and returns to its original deformation, so that the positioning block 16 enters the through hole 17, realizing the installation of two adjacent rotating rods 5 and increasing the stability of the installation of the guide ring plate 4.

[0030] An inclined screening screen 29 is installed on the top of the discharge chamber 11. X-axis and Y-axis guided rodless cylinders 23 are installed above and below the screening screen 29, respectively. A slider seat 24 is slidably sleeved on each rodless cylinder 23. A telescopic scraping mechanism for cleaning the surface of the screening screen 29 is installed on the bottom surface of the slider seat 24. The telescopic scraping mechanism includes a miniature electric push rod 25 fixedly installed on the bottom surface of the slider seat 24. A scraper plate 28 that contacts the inclined screening screen 29 is fixedly connected to the telescopic end of the miniature electric push rod 25. A discharge port 30 is provided on one side surface of the grading box 1. The bottom surface of the inner cavity of the discharge port 30 is flush with the end of the screening screen 29. The bottom surface of the inner cavity of the discharge chamber 11 is inclined. A second discharge port is provided on the bottom surface of the grading box 1 adjacent to the first discharge port 30. A vibration motor is installed on the bottom surface of the grading box 1 to assist in the discharge of the micro-nano copper powder after grading. The discharge port 2 is connected to the bottom surface of the inner cavity of the discharge chamber 11. The slider seat 24 is driven to reciprocate by the rodless cylinder 23 guided by the X-axis. During the reciprocating motion, the micro electric push rod 25 is raised and lowered adaptively, so that the bottom surface of the scraper 28 is always in contact with the top surface of the screening screen 29, which facilitates the cleaning of the micro-nano copper powder material remaining on the surface of the screening screen 29. The micro-nano copper powder remaining after screening falls away through the discharge port 30, while the screened micro-nano copper powder falls into the discharge chamber 11. The reciprocating push of the rodless cylinder 23 guided by the Y-axis drives the scraper 28 on the corresponding slider seat 24 to move synchronously, pushing the classified micro-nano copper powder away from the inner cavity of the discharge chamber 11 and leaving through the discharge port 2. This realizes the simultaneous discharge of the classified micro-nano copper powder. Furthermore, due to the different orientations of the discharge port 30 and the discharge port 2, the placement of the collection box is not affected during discharge, making it easy to distinguish the classified micro-nano copper powder.

[0031] In use, the micro-nano copper powder falls from the feed inlet into the classifier 1 for classification. Guided by the inclined ring seat 8 and the conical grinding seat 10, it falls into the extrusion chamber. The conical grinding seat 10 swings back and forth, driving the stirring rod 21 on the rotating rod 5 to swing back and forth synchronously, stirring and agitating the micro-nano copper powder entering the inclined ring seat 8, guiding the movement of the micro-nano copper powder. The micro-nano copper powder in the extrusion chamber is extruded by the conical grinding seat 10 and the bottom of the inclined ring seat 8, forming micro-nano copper powder with a qualified particle size. The transmission plate 20 drives the micro-nano copper powder with a qualified particle size to push back and forth, pushing the micro-nano copper powder into the discharge screen hole 22. The diameter of the discharge screen hole 22 is larger than the particle size of the micro-nano copper powder, which facilitates the falling of the micro-nano copper powder.

[0032] The positioning pin 19 is inserted into the positioning hole 18 at the U-shaped end of positioning rod 13 and positioning rod 12. At this time, the ends of positioning rod 13 and positioning rod 12 are in contact. Then, the positioning plate 15 is moved, and the positioning plate 15 and positioning rod 12 rotate. At the same time, the positioning block 16 is pressed, and the positioning block 16 squeezes the spring 14. The end of the positioning block 16 enters the cavity, so that the end of the positioning plate 15 can reach directly below the positioning block 16. When the positioning block 16 and the through hole 17 are vertically collinear, the spring 14 loses the external force and returns to its original deformation, so that the positioning block 16 enters the through hole 17, realizing the installation of two adjacent rotating rods 5 and increasing the stability of the installation of the guide ring plate 4.

[0033] The rodless cylinder 23, guided by the X-axis, drives the slider seat 24 to reciprocate. The miniature electric push rod 25 pushes the scraper plate 28 to rise and fall adaptively, cleaning the micro-nano copper powder material remaining on the surface of the screening screen 29. The micro-nano copper powder remaining after screening falls out through the discharge port 30, while the screened micro-nano copper powder falls into the discharge chamber 11. The rodless cylinder 23, guided by the Y-axis, drives the scraper plate 28 on the corresponding slider seat 24 to move synchronously, pushing the graded micro-nano copper powder out of the inner cavity of the discharge chamber 11 and out through the discharge port 2. Since the discharge port 30 and the discharge port 2 are set in different directions, they do not affect the placement of the collection box when discharged, making it easy to distinguish the graded micro-nano copper powder.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A micro / nano copper powder grading device, comprising a grading box (1), characterized in that: An inclined ring seat (8) for guiding the micro-nano copper powder to fall is provided on the surface of the inner cavity of the classifier (1), and a feed inlet is provided on the top surface of the classifier (1). A dropping chamber (11) is provided below the inclined ring seat (8), and an annular plate (9) is fixedly provided on the bottom surface of the inclined ring seat (8). A reciprocating conical grinding seat (10) is rotatably installed above the annular plate (9). Two rows of vertically arranged rotating rods (5) are installed on the top surface of the conical grinding seat (10), with two rods in each row. Each rotating rod (5) has multiple equidistant stirring rods (21) fixedly connected to its surface for stirring the micro-nano copper powder. The bottom surface of the conical grinding seat (10) is equipped with multiple transmission plates (20) for pushing materials, and the outside of the conical grinding seat (10) and the inclined end of the inclined ring seat (8) form a squeezing cavity. Multiple discharge sieve holes (22) that communicate with the squeezing cavity and are used for the discharge of micro-nano copper powder are provided through the surface of the ring plate (9). Above the inclined ring seat (8) are a drive seat and a driven seat driven by a servo motor. Drive bend seats (6) are installed on the surfaces of the drive seat and the driven seat. Fixed rods (7) passing through the gap between the two rows of rotating rods (5) are installed on the bent end surfaces of the two drive bend seats (6). The two drive bend seats (6) are centrally symmetrical about the midpoint of the fixed rods (7). The grading box (1) has a convex ring seat (2) connected to the feed inlet on the top surface of the inner cavity. The convex ring seat (2) is rotatably sleeved with a concave seat (3). The top ends of the two rows of rotating rods (5) are fixedly connected to the same guide ring plate (4). The top end of the guide ring plate (4) is fixedly connected to the bottom surface of the concave seat (3). The guide ring plate (4) is composed of two semi-circular rings. The top of two adjacent rotating rods (5) in the same row is provided with a positioning rod one (12) and a positioning rod two (13) that fit together. The positioning rod one (12) and the positioning rod two (13) are configured as a U-shaped structure. A positioning pin (19) is provided on the top surface of each rotating rod (5). The U-shaped end surfaces of the positioning rod one (12) and the positioning rod two (13) are provided with positioning holes (18) that are inserted and matched with the positioning pins (19). A positioning plate (15) is rotatably mounted on the bottom end of the positioning rod one (12) via a damping pin. A through hole (17) is provided on the surface of the positioning plate (15). A cavity is provided on the bottom end of the positioning rod two (13). A spring (14) is installed inside the cavity. A positioning block (16) extending into the through hole (17) is fixed to the end of the spring (14).

2. The micro / nano copper powder classification device according to claim 1, characterized in that, An inclined screening screen (29) is installed on the top of the discharge chamber (11). Above and below the screening screen (29) are rodless cylinders (23) with X-axis guidance and Y-axis guidance, respectively. Each rodless cylinder (23) is slidably sleeved with a slider seat (24). A telescopic guide scraping mechanism for cleaning the surface of the screening screen (29) is installed on the bottom surface of the slider seat (24) on the X-axis guidance. A telescopic guide scraping mechanism for cleaning the bottom surface of the inner cavity of the discharge chamber (11) is installed on the bottom surface of the slider seat (24) on the Y-axis guidance.

3. The micro / nano copper powder classification device according to claim 2, characterized in that, The telescopic guide scraper mechanism includes a miniature electric push rod (25) fixedly installed on the bottom surface of the slider seat (24). The telescopic end of the miniature electric push rod (25) on the X-axis guide is fixedly connected to a scraper plate (28) that is in contact with the surface of the inclined screen (29). The telescopic end of the miniature electric push rod (25) on the Y-axis guide is fixedly connected to a scraper plate (28) that is in contact with the bottom surface of the inner cavity of the discharge chamber (11). A discharge port (30) is provided on one side surface of the grading box (1). The bottom surface of the inner cavity of the discharge port (30) is flush with the end of the screen (29).

4. The micro / nano copper powder classification device according to claim 3, characterized in that, The bottom surface of the inner cavity of the discharge chamber (11) is inclined. The bottom of the grading box (1) and the surface adjacent to the discharge port one (30) are provided with discharge port two, which is connected to the bottom surface of the inner cavity of the discharge chamber (11).

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