Feeding machine for metal powder injection molding

Abstract

The utility model relates to the technical field of metal powder feeding, and discloses a metal powder injection molding feeding machine which comprises a bottom plate, a mixing barrel is installed on the top of the bottom plate, the right side of the mixing barrel is communicated with a discharging pipe, an auger conveyor is installed on the right side of the discharging pipe, and an injection molding machine is installed on the right side of the auger conveyor. According to the screening device, the screening assembly is arranged, a motor is started, a bevel gear A drives two bevel gears B to rotate in the opposite directions, two transverse rods drive two connecting bevel gears to rotate, the two transmission bevel gears move in the opposite directions, and then two vertical rods move in the opposite directions; and a cam drives a concentric-square-shaped frame to move back and forth in the horizontal direction, a pressed block continuously extrudes a triangular pressing block, an abutting rod continuously knocks a screening plate, vibration of the screening plate is achieved, it is guaranteed that metal large-particle powder is screened out in the screening process, and the screening efficiency of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal powder feeding technology field especially relates to a kind of metal powder injection molding's feeding machine. BACKGROUND

[0002] Metal powder refers to the size less than 1mm metal particle group, including single metal powder, alloy powder and certain refractory compound powder with metallic properties, is the main raw material of powder metallurgy, and metal powder metallurgy needs to be metal powder injection molding, metal powder injection molding is to utilize mold injection molding blank and through sintering to rapidly manufacture high density, high precision, three-dimensional complex shape structural parts.

[0003] In the Chinese utility model patent with the announcement number CN215693491U, a kind of metal powder injection is fed to device, by the servo motor installed at the bottom of barrel, can drive rotating roller, after the heating pipe installed in rotating roller and the heating mixed blade installed on the outer wall of rotating roller are mutually cooperated, metal powder and organic binder can be conveniently and uniformly mixed, after the material scraping plate installed in heating mixed blade, the material scraping plate can be scraped off adhered to the barrel, facilitate later use.

[0004] For the related technology in the above, the inventor believes that there are the following defects: the device in the process, by material scraping plate to the metal powder adhered to the barrel is scraped off, but in the process of discharging, the size specification of metal powder particle in raw material exists difference, the time needed for mixing is longer in the process of mixing of too large powder particle, thereby affecting the mixing effect of device, need to filter larger specification metal particle before mixing, avoid these metal particles affect the mixing effect of device. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a kind of metal powder injection molding's feeding machine.

[0006] The utility model adopts the following technical scheme to realize: a kind of metal powder injection molding's feeding machine, including bottom plate, the top of bottom plate is installed with mixing cylinder, the right side of mixing cylinder is communicated with discharge pipe, the right side of discharge pipe is installed with auger conveyor, the right side of auger conveyor is installed with injection molding machine, the inside of mixing cylinder is installed with stirring subassembly, the top of mixing cylinder is communicated with feed slot, the inside of the slot of feed slot is installed with screening assembly.

[0007] The screening assembly includes a screening plate slidably arranged inside the feed trough, the top of the screening plate is fixedly connected to two connecting members, the bottom of the screening plate is abutted with a push rod, the bottom of the push rod is fixedly connected to a triangular pressure block, the surface of the triangular pressure block abuts two pressure blocks, one end of the pressure block is fixedly connected to a long rod, one end of the long rod is fixedly connected to a return frame, a cam is abutted on the inner wall of the return frame, a vertical rod is connected through the inside of the cam, the bottom end of the vertical rod is fixedly connected to a transmission helical gear, the surface of the transmission helical gear is meshedly connected to a connecting helical gear, a cross rod is connected through the axis of the connecting helical gear, one end of the cross rod is rotatably connected to the inner wall of the bottom plate, and the other end of the cross rod is fixedly connected to the helical gear B.

[0008] The stirring assembly includes a stirring shaft, a heating tube is installed inside the stirring shaft, a motor is fixedly connected to the bottom of the stirring shaft, the motor is installed at the bottom of the inner wall of the base plate, a helical gear A is sleeved on the outer side of the stirring shaft and meshes with the helical gear B, stirring rods are fixedly connected to the surface of the stirring shaft at equal intervals, and a scraper is fixedly connected to one end of the stirring rod, and the scraper abuts against the inner wall of the mixing barrel.

[0009] As a further improvement of the above scheme, a protection box is installed inside the feed trough, and a through slot for the resistance rod to pass through is opened on the top of the protection box. The front and back of the protection box are connected with fixed tubes, which are connected to the inside of the feed trough. The long rod is slidably set inside the fixed tube, and the top of the triangular pressure block and the top of the inner wall of the protection box are connected by a reset spring, which ensures the normal operation of the long rod and the triangular pressure block.

[0010] As a further improvement of the above solution, the front and back sides of the feed trough are fixedly connected with fixed plates, and the top of the vertical rod is rotatably connected to the bottom of the fixed plate, ensuring the normal operation of the vertical rod.

[0011] As a further improvement of the above solution, a bearing is installed on the outer side of the cross bar, and the top of the bearing is fixedly connected to the top of the inner wall of the base plate, ensuring the normal operation of the cross bar.

[0012] As a further improvement of the above scheme, the connecting member includes a mounting block, the surface of the mounting block is threadedly connected to two bolts, the top of the mixing barrel is provided with a threaded opening compatible with the bolts, the top of the mounting block is fixedly connected to a limit plate, the interior of the limit plate is provided with a mounting groove, the interior of the mounting groove is slidingly connected with a slide, the top of the slide is fixedly connected with small springs at equal intervals, the top of the small spring is fixedly connected to the top of the inner wall of the mounting groove, the bottom of the slide is fixedly connected with an abutment rod, and the bottom of the abutment rod is fixedly connected to the top of the screening plate, ensuring that the screening plate can vibrate normally and facilitating the removal and cleaning of the screening plate.

[0013] As a further improvement of the above-mentioned scheme, the bottom of the pressure block is fixedly connected with a clamping block, and the bottom of the inner wall of the protection box is provided with a clamping groove matched with the clamping block, so that the normal movement of the pressure block is ensured.

[0014] As a further improvement of the above-mentioned scheme, the bottom of the pressure block is fixedly connected with a clamping block, and the bottom of the inner wall of the protection box is provided with a clamping groove matched with the clamping block, so that the normal movement of the pressure block is ensured.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a screen assembly is set up, and the motor is started, and the stirring shaft is rotated with the stirring rod and the scraper, and then the raw material is poured into the inside of the feed groove, in this process, the bevel gear A rotates with two bevel gears B in opposite directions, makes two cross bars rotate with two connecting bevel gears, because the direction of two connecting bevel gears is consistent, makes the movement direction of two transmission bevel gears opposite, and then makes two vertical rods move in opposite directions, makes the cam with the back type frame move to and fro in the horizontal direction, makes the pressure block constantly extrude the triangular pressure block, under the action of reset spring and the abutment rod, makes the abutment rod move to and fro in the vertical direction constantly, thereby makes the abut rod knock the screen plate constantly, realizes the vibration of screen plate, guarantees the screening of metal large particle powder in the screening process, also reduces the situation that large particle metal powder blocks the screen plate, improves the screening efficiency of device.

[0017] The utility model discloses a screen assembly is set up, and the motor is started, and the stirring shaft is rotated with the stirring rod and the scraper, and then the raw material is poured into the inside of the feed groove, in this process, the bevel gear A rotates with two bevel gears B in opposite directions, makes two cross bars rotate with two connecting bevel gears, because the direction of two connecting bevel gears is consistent, makes the movement direction of two transmission bevel gears opposite, and then makes two vertical rods move in opposite directions, makes the cam with the back type frame move to and fro in the horizontal direction, makes the pressure block constantly extrude the triangular pressure block, under the action of reset spring and the abutment rod, makes the abutment rod move to and fro in the vertical direction constantly, thereby makes the abut rod knock the screen plate constantly, realizes the vibration of screen plate, guarantees the screening of metal large particle powder in the screening process, also reduces the situation that large particle metal powder blocks the screen plate, improves the screening efficiency of device. ACCURACY OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the structure schematic diagram of the bevel gear B, the stirring shaft and the scraper of the utility model;

[0020] Figure 3 It is the structure schematic diagram of the cam, the vertical rod and the back type frame of the utility model;

[0021] Figure 4 It is the structure schematic diagram of the mounting block, the limiting plate and the abutment rod of the utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the stirring shaft of the utility model.

[0023] Description of main symbols:

[0024] Bottom plate; 2. Mixing barrel; 3. Discharge pipe; 4. Auger conveyor; 5. Feed chute; 6. Screening plate; 7. Abutment rod; 8. Triangular pressure block; 9. Pressure block; 10. Long rod; 11. Reciprocating frame; 12. Cam; 13. Vertical rod; 14. Transmission bevel gear; 15. Connecting bevel gear; 16. Cross bar; 17. Bevel gear B; 18. Agitator shaft; 19. Scraper; 20. Protection box; 21. Fixed pipe; 22. Mounting block; 23. Limiting plate; 24. Abutment rod; 25. Bevel gear A. DETAILED DESCRIPTION

[0025] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example

[0026] Please combine Figures 1-5 , a metal powder injection molding feeder of this embodiment includes a base plate 1, a mixing drum 2 is installed on the top of the base plate 1, the right side of the mixing drum 2 is connected to a discharge pipe 3, the right side of the discharge pipe 3 is installed with an auger conveyor 4, the right side of the auger conveyor 4 is installed with an injection molding machine, a stirring assembly is installed inside the mixing drum 2, the top of the mixing drum 2 is connected to a feed trough 5, the front and back sides of the feed trough 5 are fixedly connected to a fixed plate, and the top of the vertical rod 13 is rotatably connected to the bottom of the fixed plate to ensure the normal operation of the vertical rod 13.

[0027] As a further improvement of the above scheme, a bearing is installed on the outside of the cross bar 16, and the top of the bearing is fixedly connected to the top of the inner wall of the base plate 1. A screening assembly is installed inside the groove of the feed trough 5, and a protection box 20 is installed inside the feed trough 5. The top of the protection box 20 is provided with a through groove for the push rod 7 to pass through. The front and back of the protection box 20 are connected to a fixed tube 21, which is connected to the inside of the feed trough 5. The long rod 10 is slidably set inside the fixed tube 21. The top of the triangular pressure block 8 and the top of the inner wall of the protection box 20 are connected by a reset spring, which ensures the normal operation of the long rod 10 and the triangular pressure block 8.

[0028] The sieve assembly is used to sieve out large-particle metal powder. The sieve assembly includes a sieve plate 6 slidably arranged inside the feed chute 5. The top of the sieve plate 6 is fixedly connected to two connecting members, the connecting member includes a mounting block 22, the surface of the mounting block 22 is threadedly connected to two bolts, and the top of the mixing drum 2 is provided with a threaded opening adapted for the bolts. The top of the mounting block 22 is fixedly connected to a limit plate 23, and a mounting groove is provided inside the limit plate 23. The interior of the mounting groove is slidably connected to a slide, and the top of the slide is fixedly connected with a small spring at equal intervals. The top of the small spring is fixedly connected to the top of the inner wall of the mounting groove, and the bottom of the slide is fixedly connected to an abutment rod 24. The bottom of the abutment rod 24 is fixedly connected to a guide plate. The top of the mixing drum 2 is provided with a guide groove for the guide plate to move, so that the abutment rod 24 is more stable when moving. The bottom of the abutment rod 24 is fixedly connected to the top of the sieve plate 6, ensuring that the sieve plate 6 can vibrate normally, while facilitating the removal and cleaning of the sieve plate 6. The bottom of the dividing plate 6 is in contact with a push rod 7, and a triangular pressure block 8 is fixedly connected to the bottom of the push rod 7. The surface of the triangular pressure block 8 is in contact with two pressure blocks 9. The bottom of the pressure block 9 is fixedly connected with a card block. The bottom of the inner wall of the protection box 20 is provided with a card slot adapted to the card block to ensure the normal movement of the pressure block 9. One end of the pressure block 9 is fixedly connected to a long rod 10, and one end of the long rod 10 is fixedly connected to a return frame 11. A cam 12 is in contact with the inner wall of the return frame 11. The inside of the cam 12 A vertical rod 13 is connected through it, and the bottom end of the vertical rod 13 is fixedly connected to the transmission bevel gear 14. The surface of the transmission bevel gear 14 is meshed with the connecting bevel gear 15. The axis of the connecting bevel gear 15 is connected through a cross rod 16. A bearing is installed on the outside of the cross rod 16. The top of the bearing is fixedly connected to the top of the inner wall of the base plate 1, ensuring the normal operation of the cross rod 16. One end of the cross rod 16 is rotatably connected to the inner wall of the base plate 1, and the other end of the cross rod 16 is fixedly connected to the bevel gear B17.

[0029] The stirring assembly is used to mix metal powder. The stirring assembly includes a stirring shaft 18. A heating tube is installed inside the stirring shaft 18. The bottom of the stirring shaft 18 is fixedly connected to a motor, which is installed at the bottom of the inner wall of the base plate 1. The outer side of the stirring shaft 18 is sleeved with a helical gear A25 that meshes with the helical gear B17. Stirring rods are fixedly connected to the surface of the stirring shaft 18 at equal intervals. A scraper 19 is fixedly connected to one end of the stirring rod, and the scraper 19 abuts against the inner wall of the mixing barrel 2.

[0030] The implementation principle of a metal powder injection molding feeder in the embodiment of the present application is as follows: start the motor to rotate the stirring shaft 18 with the stirring rod and the scraper 19, and then pour the raw materials into the interior of the feed trough 5. During this process, the bevel gear A25 rotates in opposite directions with the two bevel gears B17, so that the two cross bars 16 rotate with the two connecting bevel gears 15. Since the two connecting bevel gears 15 are oriented in the same direction, the movement directions of the two transmission bevel gears 14 are opposite, and then the two vertical bars 13 move in opposite directions, so that the cam 12 moves back and forth with the return frame 11 in the horizontal direction, so that the pressure block 9 continuously squeezes the triangular pressure block 8. Under the action of the return spring and the abutment rod 24, the abutment rod 7 continuously moves back and forth in the vertical direction, so that the abutment rod 7 continuously knocks the screening plate 6, realizing the vibration of the screening plate 6, ensuring that the large metal particles are screened out during the screening process, while also reducing the situation where the large particles of metal powder block the screening plate 6, thereby improving the screening efficiency of the device.

[0031] When the screening of the metal powder is completed, the bolts are turned to release the connection between the mounting block 22 and the mixing drum 2, and then the two limit plates 23 are lifted upwards, so that the screening plate 6 can filter out the large-particle metal powder on the screening plate 6, collect and process these large-particle metal powders, and clean the screening plate 6 at the same time. After the cleaning work is completed, the mounting block 22 and the mixing drum 2 are connected by bolts, so that the device can easily remove large-particle metal powder and clean the screening plate 6, thereby improving the working efficiency of the device.

[0032] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A feeder for metal powder injection molding, characterized in that: The invention comprises a bottom plate (1), a mixing drum (2) is installed on the top of the bottom plate (1), a discharge pipe (3) is connected to the right side of the mixing drum (2), an auger conveyor (4) is installed to the right side of the discharge pipe (3), an injection molding machine is installed to the right side of the auger conveyor (4), a stirring assembly is installed inside the mixing drum (2), a feed trough (5) is connected to the top of the mixing drum (2), and a screening assembly is installed inside the feed trough (5); The screening assembly comprises a screening plate (6) slidably arranged inside the feed trough (5), the top of the screening plate (6) is fixedly connected to two connecting members, the bottom of the screening plate (6) is abutted with a push rod (7), the bottom of the push rod (7) is fixedly connected to a triangular pressure block (8), the surface of the triangular pressure block (8) is abutted with two pressure blocks (9), one end of the pressure block (9) is fixedly connected to a long rod (10), one end of the long rod (10) is fixedly connected to a return frame (11), and the return frame (11) is fixedly connected to the return frame (11). 1) is abutted against the inner wall of the base plate (1), a vertical rod (13) is connected to the inside of the cam (12), the bottom end of the vertical rod (13) is fixedly connected to the transmission bevel gear (14), the surface of the transmission bevel gear (14) is meshedly connected to the connecting bevel gear (15), the axis of the connecting bevel gear (15) is connected to the cross rod (16), one end of the cross rod (16) is rotatably connected to the inner wall of the base plate (1), and the other end of the cross rod (16) is fixedly connected to the bevel gear B (17); The stirring assembly comprises a stirring shaft (18), a heating tube is installed inside the stirring shaft (18), a motor is fixedly connected to the bottom of the stirring shaft (18), and the motor is installed at the bottom of the inner wall of the bottom plate (1), a helical gear A (25) meshing with the helical gear B (17) is sleeved on the outer side of the stirring shaft (18), stirring rods are fixedly connected to the surface of the stirring shaft (18) at equal intervals, and a scraper (19) is fixedly connected to one end of the stirring rod, and the scraper (19) abuts against the inner wall of the mixing barrel (2).

2. A metal powder injection molding feeder according to claim 1, characterized in that: A protection box (20) is installed inside the feed trough (5). A through slot for the support rod (7) to pass through is opened on the top of the protection box (20). The front and back sides of the protection box (20) are both connected to fixed tubes (21). The fixed tubes (21) are connected to the inside of the feed trough (5). The long rod (10) is slidably arranged inside the fixed tube (21). The top of the triangular pressure block (8) and the top of the inner wall of the protection box (20) are connected via a return spring.

3. A metal powder injection molding feeder according to claim 1, characterized in that: The front and back sides of the feed trough (5) are fixedly connected to fixed plates, and the top of the vertical rod (13) is rotatably connected to the bottom of the fixed plate.

4. A metal powder injection molding feeder according to claim 1, characterized in that: A bearing is installed on the outer side of the crossbar (16), and the top of the bearing is fixedly connected to the top of the inner wall of the bottom plate (1).

5. A metal powder injection molding feeder according to claim 1, characterized in that: The connecting member comprises a mounting block (22), the surface of the mounting block (22) being threadedly connected to two bolts, the top of the mixing barrel (2) being provided with a threaded opening adapted to the bolts, the top of the mounting block (22) being fixedly connected to a limit plate (23), the interior of the limit plate (23) being provided with a mounting groove, the interior of the mounting groove being slidably connected to a slide, the top of the slide being fixedly connected to small springs at equal intervals, the top of the small springs being fixedly connected to the top of the inner wall of the mounting groove, the bottom of the slide being fixedly connected to an abutting rod (24), the bottom of the abutting rod (24) being fixedly connected to the top of the screening plate (6).

6. A metal powder injection molding feeder according to claim 1, characterized in that: A card block is fixedly connected to the bottom of the pressure block (9), and a card slot adapted to the card block is provided at the bottom of the inner wall of the protection box (20).

7. A metal powder injection molding feeder according to claim 5, characterized in that: The bottom of the abutting rod (24) is fixedly connected to a guide plate, and the top of the mixing cylinder (2) is provided with a guide groove for the guide plate to move.

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