Automatic pushing and feeding device

Abstract

The invention discloses an automatic pushing and feeding device, and belongs to the technical field of sintered neodymium-iron-boron permanent magnet materials. Comprising a mounting plate, a material pushing pipe is arranged above the mounting plate, one end of the material pushing pipe faces a mold, an end plate is arranged at the other end of the material pushing pipe, a material pushing air cylinder is arranged on the end plate, the material pushing air cylinder is fixed to the end plate, and the output end of the material pushing air cylinder is located in the material pushing pipe; a material pushing piston is arranged at the output end of the material pushing air cylinder, the outer surface of the material pushing piston is in sliding contact with the inner surface of a material pushing pipe, a feeding hopper is arranged in the middle of the upper surface of the material pushing pipe, a feeding pipe is arranged above the feeding hopper, a control valve is arranged on the feeding pipe, and the control valve is connected with the control valve. A plurality of fixing plates are arranged on the lower surface of the material pushing pipe, the material pushing pipe is fixed to a mounting plate through the fixing plates, and the mounting plate is connected to the outer surface of the mold. According to the technical scheme, automatic feeding of the two-way pressing assembly is achieved, and the feeding efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sintered NdFeB permanent magnet materials, and in particular relates to an automatic pushing and feeding device. Background Art

[0002] Before sintering, the Nd-Fe-B powder needs to be pressed into a green compact. The relative density of the green compact is generally 50% to 70%, the porosity is 50% to 30%, and the contact between the particles is mechanical contact with low bonding strength. When the pressing pressure is high, some of the powder particles that have been in contact with each other have been deformed (elastic or plastic deformation), and such a powder compact does not have a microstructure with high permanent magnetic properties. In order to further increase the density, improve the contact properties between the powder particles, increase the strength, and make the magnet have microstructure characteristics with high permanent magnetic properties, the green compact needs to be heated to a temperature below the melting point of the powder matrix phase and heat treated for a period of time. This process is called sintering.

[0003] In the process of pressing the blanks, a two-way pressing method is usually adopted. In this method, since the pressing components are arranged at the upper and lower ends of the mold, the moving path of the pressing components will completely cover the space directly above the mold. In order to avoid interference with the movement of the pressing components, it is inconvenient to set up a feeding component, and the feeding method of manually adding powder is usually adopted. However, the manual feeding method not only reduces the efficiency of the pressing process, but the powder generated during feeding will also affect the health of the operator. Summary of the invention

[0004] In view of this, an object of the present invention is to provide an automatic pushing and loading device to realize automatic feeding of a bidirectional pressing component and improve feeding efficiency.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The invention discloses an automatic pushing and loading device, which is arranged on one side of a bidirectional pressing component. The bidirectional pressing component comprises a mold, a mounting plate, a pushing tube is arranged above the mounting plate, one end of the pushing tube is arranged toward the mold, an end plate is arranged at the other end of the pushing tube, a pushing cylinder is arranged on the end plate, the pushing cylinder is fixed to the end plate, and the output end of the pushing cylinder is located in the pushing tube, a pushing piston is arranged on the output end of the pushing cylinder, the outer surface of the pushing piston is in sliding contact with the inner surface of the pushing tube, a feeding funnel is arranged at the middle position of the upper surface of the pushing tube, a feeding pipe is arranged above the feeding funnel, a control valve is arranged on the feeding pipe, a plurality of fixing plates are arranged on the lower surface of the pushing tube, the fixing plate fixes the pushing tube to the mounting plate, the mounting plate is connected to the outer surface of the mold, a discharge port is arranged on the lower surface of the pushing tube close to the end plate, the discharge port is located between the pushing piston and the end plate, a collecting box is arranged below the discharge port, and the collecting box is placed on the mounting plate.

[0007] Furthermore, a cover plate is provided at the upper end of the feed hopper, and the end of the feed pipe is connected to the middle of the cover plate.

[0008] Furthermore, a tubular feeding bag is provided on the end of the pushing tube facing the mold, one end of the feeding bag is fixed to the end of the pushing tube, and a traction rope is provided on the other end of the feeding bag, one end of the traction rope is connected to the other end of the feeding bag, and the other end of the traction rope is connected to the middle part of one end of the pushing piston facing the mold.

[0009] Furthermore, a hollow and semicircular counterweight block is provided on one end of the feeding bag connected to the traction rope, and a plurality of cutting holes are provided on the surface of the counterweight block. The inner side surface of the end of the feeding bag is connected to the outer surface of the counterweight block, and the protruding end of the counterweight block is located inside the feeding bag and connected to one end of the traction rope.

[0010] Furthermore, a plurality of springs evenly distributed around the circumference are provided on the outer side surface of the counterweight block, one end of the spring is fixed to the inner side surface of the end of the feeding bag, and the other end of the spring is fixed to the outer surface of the counterweight block.

[0011] Furthermore, a plurality of evenly distributed columnar protrusions are provided on the inner side surface of the feeding bag, and one end of the columnar protrusion is fixed on the inner side surface of the feeding bag.

[0012] Furthermore, the feeding bag is funnel-shaped, and the large-diameter end of the feeding bag is fixedly connected to the end of the pushing tube.

[0013] Furthermore, the bidirectional pressing assembly also includes an upper pressing assembly and a lower pressing assembly, and the upper pressing assembly and the lower pressing assembly both include a pressing cylinder and a pressing plate, the output end of the pressing cylinder is fixed to the middle of the pressing plate, and the edges of the two pressing plates match the inner side surfaces of the mold.

[0014] Furthermore, the traction rope is an elastic rope.

[0015] The beneficial effects of the present invention are:

[0016] The present technical solution can automatically feed materials into the mold when pressing NdFeB permanent magnet materials, thereby reducing the labor intensity of workers and improving the pressing efficiency. In the present technical solution, the powder feeding method is clever and will not interfere with the pressing process of the bidirectional pressing component. At the same time, it is located outside the mold during installation and does not need to occupy the space covered by the movement trajectory of the pressing component. Therefore, when feeding, the pressing component does not need to move up a large stroke to avoid, thereby simplifying the feeding process and improving the feeding efficiency.

[0017] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0019] Figure 1 It is a three-dimensional schematic diagram of the feeding device of the present invention installed on one side of the bidirectional pressing assembly;

[0020] Figure 2 It is an internal cross-sectional view of the feeding device of the present invention when feeding materials to the mold;

[0021] Figure 3 It is a schematic diagram of an internal cross-sectional view of the feeding device of the present invention when adding powder into the pushing pipe;

[0022] Figure 4 It is a partially enlarged schematic diagram of the connection between the end of the feeding bag and the counterweight block in the feeding device of the present invention.

[0023] The following are marked in the accompanying drawings:

[0024] 1. Mounting plate; 2. Pushing tube; 3. Fixed plate; 4. End plate; 5. Pushing cylinder; 6. Pushing piston; 7. Feeding bag; 8. Counterweight; 9. Traction rope; 10. Cutting hole; 11. Spring; 12. Columnar protrusion; 13. Feeding funnel; 14. Feeding tube; 15. Control valve; 16. Cover plate; 17. Discharge port; 18. Collecting box; 19. Mold; 20. Upper pressing assembly; 21. Lower pressing assembly; 22. Powder. DETAILED DESCRIPTION

[0025] like Figure 1 to Figure 4 As shown, an automatic pushing and loading device of the present invention is arranged on one side of a bidirectional pressing component. The bidirectional pressing component includes a mold 19, a mounting plate 1, a pushing tube 2 is arranged above the mounting plate 1, the pushing tube 2 is arranged perpendicular to the mold 19, one end of the pushing tube 2 is arranged toward the mold 19, and the other end of the pushing tube 2 is provided with an end plate 4, the end plate 4 is fixed to the end surface of the pushing tube 2, a pushing cylinder 5 is arranged on the end plate 4, the pushing cylinder 5 is fixed on the end plate 4, and the output end of the pushing cylinder 5 is located in the pushing tube 2, and a pushing piston 6 is arranged on the output end of the pushing cylinder 5, and the outer The surface is in sliding contact with the inner surface of the push tube 2. A feed hopper 13 is provided in the middle position of the upper surface of the push tube 2. A feeding pipe 14 is provided above the feed funnel 13. A control valve 15 is provided on the feeding pipe 14. A plurality of fixing plates 3 are provided on the lower surface of the push tube 2. The fixing plates 3 fix the push tube 2 on the mounting plate 1. The mounting plate 1 is connected to the outer surface of the mold 19. A discharge port 17 is provided on the lower surface of the push tube 2 close to the end plate 4. The discharge port 17 is located between the push piston 6 and the end plate 4. A collecting box 18 is provided below the discharge port 17. The collecting box 18 is placed on the mounting plate 1.

[0026] The working principle of the above technical solution is:

[0027] The powder 22 is fed into the pushing tube 2 through the feeding tube 14. At the same time, the setting of the control valve 15 can control the feeding amount of the powder 22 according to its opening and closing time. The specific control method is the existing technology and will not be described in detail here. When the powder 22 is transported to the pushing tube 2, the pushing cylinder 5 is started, and the pushing cylinder 5 drives the pushing piston 6 to move, thereby pushing the powder 22 therein to the end of the pushing tube 2, and then discharging it into the mold 19, thereby achieving an efficient pushing effect. At the same time, the setting of the discharge port 17 enables the residual powder 22 that falls from the feed funnel 13 to between the pushing piston 6 and the end plate 4 to be pushed when the pushing piston 6 is reset, and then discharged from the discharge port 17 to the collection box 18, thereby achieving the purpose of cleaning the return path of the pushing piston, and at the same time, the residual powder 22 can be collected and used.

[0028] In one feasible manner, a cover plate 16 is provided at the upper end of the feed hopper 13, and the end of the feed pipe 14 is connected to the middle of the cover plate 16. The setting of the cover plate 16 can block the dust raised when the powder 22 falls into the feed hopper 13, thereby improving the cleanliness of the production environment.

[0029] In one feasible manner, a tubular feeding bag 7 is provided on one end of the pushing tube 2 facing the mold 19, one end of the feeding bag 7 is fixed to the end of the pushing tube 2, and a traction rope 9 is provided on the other end of the feeding bag 7, one end of the traction rope 9 is connected to the inner side surface of the other end of the feeding bag 7, and the other end of the traction rope 9 is connected to the middle part of one end of the pushing piston 6 facing the mold 19.

[0030] The setting of the feeding bag 7 is that when the pushing cylinder 5 is located in the initial position, the setting of the traction rope 9 pulls the end of the feeding bag 7 to the inside of the pushing tube 2. After the powder 22 in the pushing tube 2 is added, the pushing piston 6 will push the powder 22 to move, and then the powder 22 pushes the feeding bag 7 to move, that is, when the feeding bag 7 moves to the end of the pushing tube 2, it will fall into the inside of the mold 19, and then the subsequent powder 22 will be discharged downward into the mold 19 through the feeding bag 7. Then, the setting of the feeding bag 7 can buffer the fall of the powder 22, reduce its falling speed, and reduce the generation of dust. At the same time, the setting of the feeding bag 7 can also hold the powder 22 at its end. During the resetting process of the pushing piston 6, the traction rope 9 will drive the end of the feeding bag 7 to move upward, and then the powder 22 will be gradually discharged from the mold 19 under the action of gravity, further reducing the dust generated by the powder 22 falling into the mold 19.

[0031] In one practicable manner, a hollow and semicircular counterweight block 8 is provided on one end of the feeding bag 7 connected to the traction rope 9, and a plurality of cutting holes are provided on the surface of the counterweight block 8. The inner side surface of the end of the feeding bag 7 is connected to the outer surface of the counterweight block 8, and the protruding end of the counterweight block 8 is located inside the feeding bag 7 and connected to one end of the traction rope 9.

[0032] It is not difficult to understand that at this time, the end of the push tube 2 is arranged on the outside of the template, and the counterweight block 8 will fall into the mold 19 during the downward falling process, that is, the setting of the push tube 2 will not interfere with the pressing of the two-way pressing assembly, and there is no need to set the position of the upper pressing assembly 20 too high or the movement stroke too large (if there is interference, the upper pressing assembly 20 needs to make room for the push tube 2, and after the push tube 2 completes the feeding, it is necessary to set a slide or other method to reset it, which is relatively complicated).

[0033] The setting of the counterweight block 8 can drive the feeding bag 7 to fall downward, that is, under the push of the powder 22, the counterweight block 8 will drive the feeding bag 7 to fall into the mold 19 first, and then the powder 22 will be discharged downward from the end of the pushing tube 2, which can ensure the falling and layout effect of the feeding bag 7. At the same time, the setting of the cutting hole 10, when the powder 22 falls onto the counterweight block 8 and contacts the cutting hole 10, the cutting hole 10 will cut and disperse the agglomerated powder 22, thereby improving the subsequent pressing effect.

[0034] In one practicable manner, a plurality of springs 11 evenly distributed around the circumference are provided on the outer surface of the counterweight block 8 , one end of the spring 11 is fixed to the inner side of the end of the feeding bag 7 , and the other end of the spring 11 is fixed to the outer surface of the counterweight block 8 .

[0035] The setting of the spring 11 creates a leakage gap between the feeding bag 7 and the counterweight block 8, which is convenient for the discharge of the powder 22. At the same time, when the counterweight block 8 is reset by the traction rope 9, the spring 11 will hit the inner surface of the mold 19, thereby generating vibration, causing the residual powder 22 in the feeding bag 7 to be shaken and discharged. At the same time, the advantage of the setting of the counterweight block 8 is that the short-stroke reciprocating motion of the pushing cylinder 5 can drive the counterweight block 8 to move up and down continuously, thereby realizing shaking discharge and improving the discharge effect in the feeding bag 7.

[0036] In one feasible manner, a plurality of evenly distributed columnar protrusions 12 are provided on the inner side surface of the feeding bag 7, and one end of the columnar protrusion 12 is fixed on the inner side surface of the feeding bag 7. The provision of the columnar protrusion 12 can avoid the problem that the inner wall of the feeding bag 7 is adhered to, resulting in the residual powder 22 being unable to be shaken out. Of course, the protrusion can also be a rubber soft rod, which plays the role of supporting the feeding bag 7, so that the feeding bag 7 always remains in an open state, further improving the leakage effect.

[0037] In one practicable manner, the feeding bag 7 is funnel-shaped, and the large-diameter end of the feeding bag 7 is fixedly connected to the end of the pushing tube 2 , so that the traction rope 9 can guide the feeding bag 7 into the interior of the pushing tube 2 .

[0038] In one practicable embodiment, the bidirectional pressing assembly also includes an upper pressing assembly 20 and a lower pressing assembly 21, each of which includes a pressing cylinder and a pressing plate, the output end of the pressing cylinder is fixed to the middle of the pressing plate, and the edges of the two pressing plates match the inner side surfaces of the mold 19.

[0039] In one feasible manner, the traction rope 9 is an elastic rope. The advantage of the elastic rope is that when the counterweight block 8 falls into the mold 19, the elastic rope is stretched and then falls to the lower part of the mold 19, which is convenient for adding material from a position close to the bottom. At the same time, when the elastic rope is stretched, it will continuously bounce up and down, thereby improving the discharge effect. Furthermore, when the traction rope 9 pulls the counterweight block 8 into the pushing tube 2, the elastic rope loses the effect of the gravity of the counterweight block 8, and it will reset, thereby mobilizing the counterweight block 8 to move to the side close to the pushing piston 6, thereby being able to pull the end of the feeding bag 7 toward the inside of the pushing tube 2, and then pulling the feeding bag 7 completely into the pushing tube 2, thereby avoiding the problem of part of the feeding bag 7 drooping above the mold 19, causing interference with the movement trajectory of the pressure plate.

[0040] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. An automatic feeding device, arranged on one side of a bidirectional pressing assembly, wherein the bidirectional pressing assembly comprises a mold (19), characterized in that: The invention comprises a mounting plate (1), a push tube (2) is arranged above the mounting plate (1), one end of the push tube (2) is arranged toward the mold (19), the other end of the push tube (2) is provided with an end plate (4), a push cylinder (5) is arranged on the end plate (4), the push cylinder (5) is fixed on the end plate (4), and the output end of the push cylinder (5) is located in the push tube (2), a push piston (6) is arranged on the output end of the push cylinder (5), the outer surface of the push piston (6) is in sliding contact with the inner surface of the push tube (2), a feed funnel (13) is arranged in the middle of the upper surface of the push tube (2), and the push cylinder (5) is provided with a push piston (6). A feeding pipe (14) is provided above the feeding funnel (13), and a control valve (15) is provided on the feeding pipe (14). A plurality of fixing plates (3) are provided on the lower surface of the pushing pipe (2), and the fixing plates (3) fix the pushing pipe (2) on the mounting plate (1). The mounting plate (1) is connected to the outer surface of the mold (19). A discharge port (17) is provided on the lower surface of the pushing pipe (2) close to the end plate (4), and the discharge port (17) is located between the pushing piston (6) and the end plate (4). A collecting box (18) is provided below the discharge port (17), and the collecting box (18) is placed on the mounting plate (1).

2. The automatic feeding device according to claim 1, characterized in that: A cover plate (16) is provided at the upper end of the feed hopper (13), and the end of the feed pipe (14) is connected to the middle of the cover plate (16).

3. The automatic feeding device according to claim 1, characterized in that: A tubular feeding bag (7) is provided on one end of the pushing tube (2) facing the mold (19), one end of the feeding bag (7) is fixed to the end of the pushing tube (2), a traction rope (9) is provided on the other end of the feeding bag (7), one end of the traction rope (9) is connected to the other end of the feeding bag (7), and the other end of the traction rope (9) is connected to the middle part of one end of the pushing piston (6) facing the mold (19).

4. The automatic feeding device according to claim 3 is characterized in that: A hollow and semicircular counterweight (8) is provided on one end of the feeding bag (7) connected to the traction rope (9), and a plurality of cutting holes are provided on the surface of the counterweight (8). The inner side surface of the end of the feeding bag (7) is connected to the outer surface of the counterweight (8), and the protruding end of the counterweight (8) is located inside the feeding bag (7) and connected to one end of the traction rope (9).

5. The automatic feeding device according to claim 4 is characterized in that: A plurality of springs (11) evenly distributed around the circumference are provided on the outer surface of the counterweight (8), one end of the spring (11) is fixed to the inner side of the end of the feeding bag (7), and the other end of the spring (11) is fixed to the outer surface of the counterweight (8).

6. The automatic feeding device according to claim 5, characterized in that: A plurality of evenly distributed columnar protrusions (12) are provided on the inner side surface of the feeding bag (7), and one end of the columnar protrusion (12) is fixed on the inner side surface of the feeding bag (7).

7. The automatic feeding device according to claim 6, characterized in that: The feeding bag (7) is funnel-shaped, and the large-diameter end of the feeding bag (7) is fixedly connected to the end of the pushing tube (2).

8. The automatic feeding device according to claim 1, characterized in that: The bidirectional pressing assembly also includes an upper pressing assembly (20) and a lower pressing assembly (21), and the upper pressing assembly (20) and the lower pressing assembly (21) both include a pressing cylinder and a pressing plate, the output end of the pressing cylinder is fixed to the middle of the pressing plate, and the edges of the two pressing plates match the inner side surfaces of the mold (19).

9. The automatic pushing and feeding device according to claim 3 is characterized in that: The traction rope (9) is an elastic rope.

Images