Constant feeder for metal powder

Abstract

The utility model belongs to the technical field of material weighing equipment, and particularly relates to a metal powder constant feeder which comprises a machine frame, a supporting plate is arranged in the middle of the machine frame, and a main feeding mechanism, a compensation feeding structure and a weighing turnover mechanism are installed on the supporting plate. The main feeding mechanism comprises a large stock bin and a large feeding device from top to bottom. The compensation feeding structure comprises a small stock bin and a small feeding device from top to bottom; the weighing turnover mechanism is installed between the large feeding device and the small feeding device, and a discharging port in the large feeding device and a discharging port in the small feeding device face the weighing turnover mechanism. A large stock bin is connected to the upper portion of the large feeding device, a small stock bin is connected to the upper portion of the small feeding device, and a discharging hopper is arranged below the weighing turnover mechanism. And pneumatic vibrators are arranged on the outer walls of the large stock bin, the small stock bin and the discharge hopper. The problems of large error and low efficiency caused by manual powder weighing in the prior art are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of material weighing equipment, and particularly relates to a quantitative feeder for metal powder. Background Technique

[0002] Powder metallurgy refers to a process technology that uses metal powders or metal powders (or mixtures of metal powders and non-metal powders) as raw materials, and manufactures metal materials, composite materials, and various types of products through granulation, compacting, and sintering. And powder weighing is an important part of molding, and the accuracy of powder weight directly affects the composition and performance of subsequent molded billets.

[0003] At present, in the production and manufacturing process of electrical alloy products, due to the relatively large specific gravity of metal powders such as tungsten powder and copper-tungsten mixed powder, and some additives added, their fluidity is poor, and it is difficult to achieve automatic feeding, discharging, weighing, and filling. Therefore, in the current powder weighing process, manual weighing with a balance is mostly used, with low automation and low efficiency. The weighing accuracy is greatly affected by human factors, and there will inevitably be a certain degree of error or mistake in manual operation. If the weights of the products are different, the product quality stability will be affected, and both too low and too high weights of the products will affect the product performance. Content of the Utility Model

[0004] The purpose of the utility model is to provide a quantitative feeder for metal powder, which solves the problems of large error and low efficiency caused by relying on manual powder weighing.

[0005] The utility model is realized through the following technical solutions:

[0006] A feeder for metal powder includes a frame, a support plate is provided in the middle of the frame, and a main feeding mechanism, a compensation feeding structure, and a weighing and flipping mechanism are installed on the support plate;

[0007] The main feeding mechanism includes a large material bin and a large feeding device from top to bottom;

[0008] The compensation feeding structure includes a small material bin and a small feeding device from top to bottom;

[0009] The weighing and flipping mechanism is installed between the large feeding device and the small feeding device, and the discharge ports in the large feeding device and the small feeding device both face the weighing and flipping mechanism;

[0010] A large material bin is connected above the large feeding device, a small material bin is connected above the small feeding device, and a discharge hopper is provided below the weighing and flipping mechanism;

[0011] Pneumatic vibrators are provided on the outer walls of the large material bin, the small material bin, and the discharge hopper.

[0012] Further, both the large feeding device and the small feeding device include a vibration motor and a conveying tray. The output shaft of the vibration motor is connected to a vibration shaft, and the vibration shaft is installed at the center of the conveying tray.

[0013] Further, the conveying tray includes a cylinder and a conveying trough integrally connected to the cylinder. The cylinder is arranged below the large material bin and the small material bin, and the conveying trough extends above the weighing and tipping mechanism.

[0014] Further, the weighing and tipping mechanism includes a motor, a rotating shaft and a weighing tray connected in sequence; a weighing sensor is arranged below the weighing tray;

[0015] The weighing tray is arranged directly above the discharge hopper and below the end of the conveying trough.

[0016] Further, the weighing tray is of a hemispherical structure.

[0017] Further, the large material bin, the small material bin and the discharge hopper are all in the shape of a funnel.

[0018] Further, the frame is a rectangular frame, and a support frame is connected in the middle of the rectangular frame. The support plate is fixedly connected to the support frame.

[0019] Further, a receiving cylinder is arranged below the discharge hopper.

[0020] Compared with the prior art, the utility model has the following beneficial technical effects:

[0021] The utility model discloses a quantitative feeder for metal powder, which includes a double feeding mechanism composed of a main feeding mechanism and a compensation feeding structure. The main feeding mechanism includes a large material bin and a large feeding device, and the compensation feeding structure includes a small material bin and a small feeding device. The large feeding device feeds first. After the weight of the metal powder output to the weighing tray of the weighing and tipping mechanism approaches the specified required weight, the feeding stops. Then the small feeding device starts to feed for weight compensation until the weight reaches the required precision range, realizing the precise quantitative feeding and weighing of metal powder. The large feeding device solves the efficiency problem, and the small feeding device solves the precision problem;

[0022] The weighing and tipping mechanism is adopted to realize two functions of weighing and tipping and pouring materials;

[0023] Pneumatic vibrators are respectively installed on the outer walls of the large material bin, the small material bin and the discharge hopper. Under the action of the pneumatic vibrators, the materials will not remain on the inner walls and there will be no mass loss, solving the problems that in the electrical alloy industry, after the tungsten copper alloy is mixed, the material has a large specific gravity, poor fluidity and cannot be automatically weighed.

[0024] Further, the feeding devices all include a vibration motor and a conveying tray. The vibration is used to convey the materials, and the materials can be slowly conveyed to the weighing tray to achieve accurate dosing.

[0025] Furthermore, the weighing and tipping mechanism includes a motor, a weighing sensor, and a weighing tray connected in sequence. When the weighing sensor recognizes that the set weight has been reached, the motor drives the weighing tray to tip, and the material of the required weight falls into the discharge hopper. The structure is simple and integrates the weighing and tipping functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a cross-sectional view of the metering feeder of the present invention;

[0027] Figure 2 is a three-dimensional structure diagram of the metering feeder of the present invention;

[0028] Figure 3 is a schematic structural diagram of the large feeding device;

[0029] Figure 4 is a schematic structural diagram of the small feeding device;

[0030] Figure 5 is a schematic structural diagram of the weighing and tipping mechanism;

[0031] Among them, 1. Frame; 2. Large material bin; 3. Small material bin; 4. Large feeding device; 5. Small feeding device; 6. Weighing and tipping mechanism; 7. Discharge hopper; 8. Pneumatic vibrator; 9. Receiving barrel; 10. First vibration motor; 11. First conveying tray; 12. Second vibration motor; 13. Second conveying tray; 14. Motor; 15. Rotating shaft; 16. Weighing tray; 17. Support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further detailed description is provided in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments.

[0033] The components described and illustrated in the drawings and embodiments of the present invention can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the present invention to be protected, but only represents a selected embodiment of the present invention. Based on the drawings and embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

[0034] It should be noted that: The term "comprising", "including" or any other variant is intended to cover non-exclusive inclusion, such that a process, element, method, article or device comprising a series of elements does not only include those elements but also other elements not expressly listed, or elements inherent to the process, element, method, article or device. In addition, the term "vertical" is based on the orientation and positional relationship of the device or component shown in the drawings, and is only for better describing the present utility model, rather than requiring the device, component or equipment shown to have that specific orientation, so it should not be construed as a limitation to the present utility model.

[0035] The features and performance of the present utility model will be further described in detail below in conjunction with embodiments.

[0036] As Figure 1 and Figure 2 shown, the present utility model discloses a feeder for metal powder, which includes a frame 1. A support plate 17 is provided in the middle of the frame 1. A large feeding device 4, a small feeding device 5 and a weighing and turning mechanism 6 are installed on the support plate 17. The weighing and turning mechanism 6 is installed between the large feeding device 4 and the small feeding device 5, and the discharge ports of the large feeding device 4 and the small feeding device 5 both face the weighing and turning mechanism 6; A large material bin 2 is connected above the large feeding device 4, a small material bin 3 is connected above the small feeding device 5, and a discharge hopper 7 is provided below the weighing and turning mechanism 6; Pneumatic vibrators 8 are provided on the outer walls of the large material bin 2, the small material bin 3 and the discharge hopper 7, which can vibrate the metal material to fall downward, avoiding the phenomenon of the metal material with large specific gravity and poor fluidity hanging on the wall.

[0037] As Figure 3 and Figure 4 shown, the large feeding device 4 and the small feeding device 5 have the same structure, both of which include a vibration motor and a conveying tray, only the size is different.

[0038] The large feeding device 4 is used for prior feeding, and the small feeding device 5 is used for later compensation feeding.

[0039] Specifically, the large feeding device 4 includes a first vibration motor 10, a first vibration shaft and a first conveying tray 11; The output shaft of the first vibration motor 10 is connected with a first vibration shaft, and the first vibration shaft is connected to the center of the conveying tray. Under the vibration of the first vibration motor 10, the metal powder in the first conveying tray 11 flows into the weighing and turning mechanism 6.

[0040] The small feeding device 5 includes a second vibration motor 12, a second vibration shaft and a second conveying tray 13; The output shaft of the second vibration motor 12 is connected with a second vibration shaft, and the second vibration shaft is connected to the center of the second conveying tray. Under the vibration of the second vibration motor 12, the metal powder in the second conveying tray 13 flows into the weighing and turning mechanism 6.

[0041] As Figure 5 shown in the figure, the weighing and tipping mechanism 6 includes a motor 14, a rotating shaft 15 and a weighing tray 16, and a weighing sensor is provided below the weighing tray 16. The materials conveyed by the large feeding device 4 and the small feeding device 5 sequentially enter the weighing tray 16, and the weighing sensor weighs them. After reaching the precise target weight range, the motor 14 drives the rotating shaft 15 to rotate, and then drives the weighing tray 16 to tip over and pour into the discharge hopper 7 located below.

[0042] The center line of the output shaft of the motor 14 is perpendicular to the center lines of the output shafts of the other two vibration motors, which can ensure that the weighing tray 16 is located in the middle of the two conveying trays.

[0043] Generally, the large material bin 2, the small material bin 3, and the discharge hopper 7 all adopt a funnel shape to facilitate material falling.

[0044] As Figure 3 and Figure 4 shown in the figure, the structure of the conveying tray is similar to a spoon shape, including a conveying trough formed by integrally connecting cylinders. The cylinders are used to receive the materials falling from the material bin, and the conveying trough extends above the weighing tray 16 for conveying materials.

[0045] The large feeding device 4 receives the materials flowing in from the large material bin 2, and the small feeding device 5 receives the materials flowing in from the small material bin 3. The simultaneously flowing materials are sequentially conveyed into the weighing tray 16 of the weighing and tipping mechanism 6, that is, the large feeding device 4 feeds first. After the weight of the materials in the weighing tray 16 approaches the specified required weight, the feeding stops, and the small feeding device 5 starts feeding for weight compensation until the weight reaches the required precision range and the feeding stops.

[0046] As Figure 1 shown in the figure, a pneumatic vibrator 8 is installed on the outer wall of the discharge hopper 7. When the materials are poured into the discharge hopper 7, the pneumatic vibrator 8 is started. Under the action of the pneumatic vibrator 8, the materials in the discharge hopper 7 completely fall and are received by the receiving cylinder 9, and the materials will not remain in the discharge hopper 7, nor will the material weight be lost.

[0047] The first vibration motor 10, the second vibration motor 12, the motor 14 and the weighing sensor are all connected to a control system. The control system can use a single-chip microcomputer. The control part is prior art and will not be elaborated here.

[0048] In use, the pre-mixed metal powder materials are poured into the large bin 2 and the small bin 3 respectively. After setting the program and parameters, the materials in the large bin 2 flow into the first conveying tray 11 of the large feeding device 4 under the action of the pneumatic vibrator 8. The materials in the first conveying tray 11 are conveyed to the weighing tray 16 of the weighing and tipping mechanism 6 under the action of the first vibration motor 10. The weighing sensor weighs it. When the inflowing materials are close to the set weighing target value, the large feeding device 4 stops working. At this time, the small feeding device 5 starts, and the materials flowing into the second conveying tray 13 from the small bin 3 are conveyed to the weighing tray 16 for weight compensation. When the weight of the materials in the weighing tray 16 reaches the required precise accuracy range and is recognized by the weighing sensor, the second vibration motor 12 stops rotating and the feeding stops. The weighing and tipping mechanism 6 tips over, pouring the materials in the weighing tray 16 into the discharge hopper 7. While the weighing and tipping mechanism 6 tips over, the pneumatic vibrator 8 on the discharge hopper 7 starts, and all the materials flow out under the action of the pneumatic vibrator 8, completing one filling operation.

[0049] The structure of the present utility model is simple, realizing automatic precise quantitative feeding and weighing of metal powder, replacing manual powder weighing, and solving the precision error caused by human factors in the process of manual powder weighing.

[0050] The present utility model adopts a double-bin and double-feeding device structure. The large feeding device 4 realizes the rough feeding of metal powder, making the material weight close to the specified required weight and then stopping feeding. The small feeding device 5 conducts weight compensation until the weight reaches the required accuracy range and then stops feeding.

[0051] Pneumatic vibrators 8 are respectively installed on the outer walls of the large bin 2, the small bin 3, and the discharge hopper 7, so that materials with a large specific gravity and poor fluidity will not remain on the inner wall and there will be no mass loss. At the same time, due to the adoption of the weighing and tipping mechanism 6, automatic precise quantitative weighing and blanking of metal powder are realized, solving the precision error caused by human factors in the process of manual powder weighing.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit it. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent replacements can still be made to the specific implementation manners of the present utility model. Any modification or equivalent replacement that does not depart from the spirit and scope of the present utility model shall be covered by the protection scope of the claims of the present utility model.

Claims

1. A quantitative feeder for metal powder, characterized in that: It comprises a frame (1), a support plate (17) is provided in the middle of the frame (1), and a main feeding mechanism, a compensation feeding structure and a weighing turning mechanism (6) are mounted on the support plate (17); The main feeding mechanism comprises, from top to bottom, a large material bin (2) and a large feeding device (4); The compensating feeding structure comprises a small material bin (3) and a small feeding device (5) from top to bottom; The weighing and turning mechanism (6) is installed between the large feeding device (4) and the small feeding device (5), and the discharge ports in the large feeding device (4) and the small feeding device (5) are both facing the weighing and turning mechanism (6); A large silo (2) is connected above the large feeding device (4), a small silo (3) is connected above the small feeding device (5), and a discharge hopper (7) is provided below the weighing and turning mechanism (6); Pneumatic vibrators (8) are provided on the outer walls of the large material bin (2), the small material bin (3) and the discharge hopper (7).

2. A quantitative feeder for metal powder according to claim 1, characterized in that: The large feeding device (4) and the small feeding device (5) both comprise a vibration motor and a conveying disc. The output shaft of the vibration motor is connected to a vibration shaft, and the vibration shaft is installed at the center of the conveying disc.

3. A quantitative feeder for metal powder according to claim 1, characterized in that: The conveying plate comprises a cylinder and a conveying trough integrally connected to the cylinder, the cylinder being arranged below the large material bin (2) and the small material bin (3), and the conveying trough extending to above the weighing and turning mechanism (6).

4. A quantitative feeder for metal powder according to claim 1, characterized in that: The weighing and turning mechanism (6) comprises a motor (14), a rotating shaft (15) and a weighing material tray (16) which are connected in sequence; a weighing sensor is provided below the weighing material tray (16); The weighing tray (16) is arranged just above the discharge hopper (7) and below the end of the conveying trough.

5. A quantitative feeder for metal powder according to claim 4, characterized in that: The weighing material tray (16) is a hemispherical structure.

6. A quantitative feeder for metal powder according to claim 1, characterized in that: The large material bin (2), the small material bin (3) and the discharge hopper (7) are all in the shape of a funnel.

7. A quantitative feeder for metal powder according to claim 1, characterized in that: The frame (1) is a rectangular frame, a support frame is connected to the middle of the rectangular frame, and the support plate (17) is fixedly connected to the support frame.

8. The quantitative feeder of metal powder according to claim 1, characterized in that: A material receiving cylinder (9) is provided below the discharge hopper (7).

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