Green forming control device

Abstract

The utility model belongs to the technical field of control equipment, and particularly relates to a green body forming control device, which comprises a mold, a forming cavity and a control device, the powder feeding box is arranged above the mold, a feeding cavity is formed in the powder feeding box, an opening of the feeding cavity is matched with the mold, and a feeding opening communicated with the feeding cavity is further formed in the upper end of the powder feeding box; the driving part is mounted on the side of the powder feeding box, and the driving end of the driving part is located in the feeding cavity; the scraping plate is connected to the driving end of the driving part and reciprocates in the feeding cavity, the scraping plate pushes powder located on the rear portion to the front portion, the powder filling density in front of the forming cavity is increased, and therefore it is guaranteed that the thickness of the powder in the front portion and the thickness of the powder in the rear portion in the forming cavity are consistent, before sintering forming, the thickness of the powder in the forming cavity is consistent, and the density difference between the front portion and the rear portion of a green body is reduced; therefore, parallelism and concentricity are ensured, and defective products are reduced after sintering.

Description

Technical Field

[0001] This utility model belongs to the field of control equipment technology, and in particular relates to a green billet forming control device. Background Technology

[0002] In powder metallurgy, the forming process mainly relies on a forming press. Its function is to use an automatic feeding system to fill the mold cavity with powder, and then use mechanical force to turn the powder in the mold cavity into a green blank. However, when filling the mold cavity with powder, the different thickness of the powder results in uneven density of the powder, which leads to different compression pressures due to the density difference before and after compression. Because of the uneven force on the front and back of the mold forming front, the density difference before and after the green blank is further amplified, resulting in reduced parallelism. Furthermore, the different density results in different lateral pressure coefficients, which leads to reduced concentricity and makes it easy for defective products to appear after sintering. Utility Model Content

[0003] The purpose of this invention is to provide a green body forming control device, which aims to solve the technical problem of defective products caused by density difference and shape and position tolerance when green bodies are easily formed in the prior art.

[0004] To achieve the above objectives, this utility model provides a green body forming control device, comprising:

[0005] A mold, which has a forming cavity;

[0006] A powder feeding box is disposed above the mold. The powder feeding box is provided with a feeding cavity. The opening of the feeding cavity is adapted to the mold. The upper end of the powder feeding box is also provided with a feeding port communicating with the feeding cavity.

[0007] A driving component is installed on the side of the powder feeding box, and the driving end of the driving component is located in the feeding chamber;

[0008] The scraper is connected to the drive end of the drive unit and reciprocates within the feeding chamber.

[0009] Optionally, the feeding chamber includes a top surface, a first inclined surface and a second inclined surface disposed on both sides of the top surface; the feeding port is disposed on the first inclined surface, and the feeding port is further provided with a pipe connector, the pipe connector being provided with at least one pipe connection portion.

[0010] Optionally, the angle between the first inclined surface and the top surface is greater than 90 degrees, and the angle between the second inclined surface and the top surface is greater than 90 degrees.

[0011] Optionally, a fixing frame is detachably provided on the side of the powder feeding box, and the driving component is mounted on the fixing frame.

[0012] Optionally, the scraper and the feed port are located on the same side of the powder feeding box.

[0013] Optionally, a position sensor is provided on the drive unit.

[0014] Optionally, the scraper extends from top to bottom close to the drive member.

[0015] Optionally, the width of the scraper is adapted to the opening of the feeding chamber.

[0016] Optionally, the powder delivery box is also provided with hanging ears on both sides.

[0017] Optionally, the mold includes a middle mold, a mandrel, and a lower punch. The middle mold has a through hole, and the mandrel and the lower punch are both disposed in the through hole. The lower punch is sleeved on the mandrel, and the inner wall of the through hole, the top surface of the lower punch, and the outer surface of the mandrel constitute the forming cavity.

[0018] The powder flow rate control and anti-segregation device provided in this utility model embodiment has at least one of the following technical effects: the powder feeding box is placed on the mold, the feeding port is connected to the powder feeder, and then the powder is filled into the forming cavity in the mold through the feeding port. During the powder feeding process, the driving component drives the scraper to reciprocate in the feeding cavity, pushing the powder located at the rear to the front, increasing the powder filling density in front of the forming cavity, thereby ensuring that the powder thickness in the front and rear of the forming cavity is consistent. Before sintering, the powder thickness in the forming cavity is consistent, reducing the density difference between the front and rear of the green body, ensuring parallelism and concentricity, and reducing the number of defective products after sintering. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of the green body forming control device provided in the embodiment of this utility model.

[0021] Figure 2 Another structural schematic diagram of the green forming control device provided in an embodiment of this utility model.

[0022] Figure 3 A cross-sectional view of the green forming control device provided in this embodiment of the utility model.

[0023] Figure 4 for Figure 3 A cross-sectional view of the mold in the provided green body forming control device.

[0024] Figure 5 for Figure 1 A cross-sectional view of the provided green body forming control device.

[0025] The following are the labeling elements in the figure:

[0026] 10—Mold; 11—Molding Cavity; 12—Intermediate Mold

[0027] 13—Core rod 14—Down punch 20—Toner cartridge delivery

[0028] 21—Feeding cavity; 211—Top surface; 212—First inclined surface

[0029] 213—Second inclined plane; 22—Pipe connector; 23—Fixed bracket

[0030] 231—Fixing part; 232—First mounting part; 233—Second mounting part

[0031] 24—Hook ear; 30—Driver component; 31—Connecting plate

[0032] 32—Sliding shaft; 40—Scraper. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0037] In one embodiment of this utility model, such as Figures 1-5 As shown, a green body forming control device is provided, comprising:

[0038] Mold 10, which has a forming cavity 11;

[0039] A powder feeding box 20 is disposed above the mold 10. The powder feeding box 20 is provided with a feeding cavity 21. The opening of the feeding cavity 21 is adapted to the mold 10. The upper end of the powder feeding box 20 is also provided with a feeding port communicating with the feeding cavity 21.

[0040] A drive unit 30 is installed on the side of the powder feeding box 20, and the drive end of the drive unit 30 is located in the feeding chamber 21;

[0041] The scraper 40 is connected to the drive end of the drive member 30 and reciprocates within the feeding chamber 21.

[0042] Furthermore, the front part of the molding cavity 11 is the end of the molding cavity 11 away from the driving member 30, and the rear part of the molding cavity 11 is the end of the molding cavity 11 close to the driving member 30.

[0043] Specifically, the powder feeding box 20 is placed on the mold 10, and the feeding port is connected to the powder feeder. Powder is then filled into the forming cavity 11 in the mold 10 through the feeding port. During the powder feeding process, the driving component 30 drives the scraper 40 to reciprocate in the feeding cavity 21, pushing the powder located at the rear to the front, increasing the powder filling density in front of the forming cavity 11, thereby ensuring that the powder thickness in the front and rear of the forming cavity 11 is consistent. Before sintering, the powder thickness in the forming cavity 11 is consistent, reducing the density difference between the front and rear of the green body, ensuring parallelism and concentricity, and reducing the occurrence of defective products after sintering.

[0044] In another embodiment of this utility model, the feeding cavity 21 includes a top surface 211, a first inclined surface 212 and a second inclined surface 213 disposed on both sides of the top surface 211; the feeding port is disposed on the first inclined surface 212, and the feeding port is also provided with a pipe connector 22, the pipe connector 22 being provided with at least one pipe connection portion. Specifically, the first inclined surface 212 and the second inclined surface 213 are respectively inclinedly connected to both sides of the top surface 211. When feeding powder, the powder slides down along the first inclined surface 212 and the second inclined surface 213 onto the mold 10, thereby reducing the amount of powder adhering to the feeding cavity 21 during the powder feeding process.

[0045] Furthermore, the pipe connector 22 can be detachably connected to the feeding device. By selecting a pipe connector 22 with a matching structure according to different powder feeding equipment and powder feeding speed, the adaptability is improved.

[0046] Furthermore, this design includes two pipe connection points.

[0047] In another embodiment of this utility model, the angle between the first inclined surface 212 and the top surface 211 is greater than 90 degrees, and the angle between the second inclined surface 213 and the top surface 211 is greater than 90 degrees. Thus, the opening of the feeding cavity 21 is larger than the top surface 211, and the opening mates with the mold 10.

[0048] In another embodiment of this utility model, a fixing frame 23 is detachably provided on the side of the powder feeding box 20, and the driving component 30 is mounted on the fixing frame 23. Specifically, the fixing frame 23 is used to install the driving component 30, and the fixing frame 23 and the powder feeding box 20 are detachably connected. Different fixing frames 23 are used according to the requirements of different driving components 30, thereby further improving applicability.

[0049] Furthermore, the fixing frame 23 includes a fixing part 231, a first mounting part 232 extending downward on one side of the fixing part 231, the first mounting part 232 being connected to the side of the powder feeding box 20, and a second mounting part 233 extending downward on the other side of the fixing part 231 away from the powder feeding box 20.

[0050] Furthermore, the driving component 30 is a cylinder, which is mounted on the fixing part 231. The driving end of the cylinder is connected to a connecting plate 31, and a sliding shaft 32 is provided on the connecting plate 31. The sliding shaft 32 passes through the second mounting part 233 and the first mounting part 232 in sequence, and extends into the feeding chamber 21 to connect with the scraper 40.

[0051] Specifically, a sliding shaft 32 is provided to drive the scraper 40 to move, and the second mounting part 233 and the first mounting part 232 play a guiding role for the sliding shaft 32, thereby improving the stability of the scraper 40.

[0052] In another embodiment of this utility model, the scraper 40 and the feeding port are located on the same side of the powder feeding box 20. Specifically, by setting the scraper 40 and the feeding port on the same side, when feeding powder, the scraper 40 is located behind the powder movement direction, that is, the powder will not fall directly onto the scraper 40, thereby improving the stability of powder feeding.

[0053] In another embodiment of this utility model, the first mounting part 232 is provided with a clearance surface for avoiding the pipe mounting bracket. Specifically, providing the clearance surface enables the installation between the pipe connector 22 and the fixing bracket 23.

[0054] In another embodiment of this utility model, a position sensor is provided on the driving member 30. Specifically, the position sensor on the driving member 30 can be used to detect the movement stroke of the driving member 30, which facilitates the setting of the reciprocating frequency of the driving member 30 and serves as a monitoring tool for the driving member 30.

[0055] It should be noted that position sensors are existing technology, and will not be discussed in detail here.

[0056] In another embodiment of this utility model, the scraper 40 extends from top to bottom close to the drive member 30. Specifically, the scraper 40 can avoid jamming during movement, thus improving the stability of use.

[0057] In another embodiment of this utility model, the width of the scraper 40 is adapted to the opening of the feeding chamber 21. The scraper 40 is greater than or equal to the maximum diameter of the forming chamber 11, ensuring smooth powder feeding and improving stability.

[0058] In another embodiment of this utility model, the powder dispenser 20 is further provided with hooks 24 on both sides. Specifically, the hooks 24 can be fitted with handles to facilitate the user in lifting the powder dispenser 20.

[0059] In another embodiment of the present invention, the mold 10 includes a middle mold 12, a mandrel 13 and a lower punch 14. The middle mold is provided with a through hole, and the mandrel 13 and the lower punch 14 are both disposed in the through hole. The lower punch 14 is sleeved on the mandrel 13. The inner sidewall of the through hole, the top surface 211 of the lower punch 14 and the outer side surface of the mandrel 13 constitute the forming cavity 11.

[0060] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A green body forming control device, characterized in that, include: A mold, which has a forming cavity; A powder feeding box is disposed above the mold. The powder feeding box is provided with a feeding cavity. The opening of the feeding cavity is adapted to the mold. The upper end of the powder feeding box is also provided with a feeding port communicating with the feeding cavity. A driving component is installed on the side of the powder feeding box, and the driving end of the driving component is located in the feeding chamber; The scraper is connected to the drive end of the drive unit and reciprocates within the feeding chamber.

2. The green body forming control device according to claim 1, characterized in that, The feeding chamber includes a top surface, a first inclined surface and a second inclined surface disposed on both sides of the top surface; the feeding port is disposed on the first inclined surface, and the feeding port is also provided with a pipe connector, and the pipe connector is provided with at least one pipe connection part.

3. The green body forming control device according to claim 2, characterized in that, The angle between the first inclined plane and the top surface is greater than 90 degrees, and the angle between the second inclined plane and the top surface is greater than 90 degrees.

4. The green body forming control device according to claim 3, characterized in that, The powder feeding box is detachably equipped with a fixing frame on its side, and the driving component is mounted on the fixing frame.

5. The green body forming control device according to claim 4, characterized in that, The scraper and the feed port are located on the same side of the powder feeding box.

6. The green body forming control device according to any one of claims 1 to 4, characterized in that, A position sensor is installed on the drive unit.

7. The green body forming control device according to any one of claims 1 to 4, characterized in that, The scraper extends from top to bottom close to the drive member.

8. The green body forming control device according to any one of claims 1 to 4, characterized in that, The width of the scraper is adapted to the opening of the feeding chamber.

9. The green body forming control device according to any one of claims 1 to 4, characterized in that, The powder delivery box is also provided with hanging ears on both sides.

10. The green body forming control device according to any one of claims 1 to 4, characterized in that, The mold includes a middle mold, a mandrel, and a lower punch. The middle mold has a through hole, and the mandrel and the lower punch are both disposed in the through hole. The lower punch is sleeved on the mandrel. The inner wall of the through hole, the top surface of the lower punch, and the outer surface of the mandrel constitute the forming cavity.

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