A profiled packing mechanism

Abstract

The present invention provides a profiling filler mechanism, including a template, a stamping upper die, and a profiling scraper. The upper surface of the template is provided with a raised profiling rail, a molding cavity is provided in the template, one end of the molding cavity is a filler port, the filler port is located at the profiling rail, the lower surface of the stamping upper die is provided with a stamping surface, the lower surface of the stamping surface can be fitted with the upper surface of the profiling rail, and the bottom of the profiling scraper is provided with a profiling port that can be fitted with the upper surface of the profiling rail. The present invention is provided with a profiling rail that can be fitted with the lower surface of the stamping surface, so that the upper surface of the metal powder at the filler port after filling can be fitted with the lower surface of the stamping surface, and the lower surface of the stamping surface can uniformly die-cast the metal powder during die-casting, ensuring that the molded product is evenly pressed and improving the quality of the finished product.

Description

Technical Field

[0001] The invention relates to the field of powder metallurgy, in particular to a profiled filler mechanism. Background Art

[0002] Powder metallurgy is the process of sintering metal powder or a mixture of metal and non-metal through blank making. In the blank making process, the powder is added to the blank making mold and extruded. Traditionally, the powder is added to the blank making mold by an automatic feeding and filling device. The blank making raw materials in the storage tank are transported to the sealing cover by a powder pump. The sealing cover is then pushed by a telescopic cylinder to move and the blank making raw materials are added to the blank making die. The sealing cover is placed at the upper end of the blank making die. Therefore, the powder inside the sealing cover falls into the blank making die. The sealing cover is then pulled back by the telescopic cylinder. When the sealing cover leaves the blank making die, the sealing cover is moved back to the blank making die. When the die is pressed, the excess powder on the upper end of the blanking die moves back with the sealing cover, thus completing the blanking die filling; the traditional concept is that the upper end face of the die and the lower end face of the powder filling device are flat, and the powder filling device is smoothly connected to the upper end face of the die. While playing a good sealing role, the filling process does not waste materials and is environmentally friendly. This filling mechanism is suitable for the production of ordinary parts, but in the production of special parts, especially when the upper die surface is a three-dimensional surface, such as an arc, trapezoidal and other structures, if the conventional method is used, part of the structure of the upper die in the stamping process will first contact with the metal powder, such as Figure 3 As shown in the figure, the metal powder in contact with this part of the structure will be compacted first under the action of stamping, while the rest of the metal powder in the molding cavity is not compacted. This kind of unevenly compacted molding metal itself has poor stability and is prone to collapse during the subsequent sintering process, resulting in a decrease in the quality of the finished product. Summary of the invention

[0003] The invention provides a profiled filling mechanism to at least solve the problem of uneven metal powder forming when the upper die surface is a three-dimensional surface in the prior art.

[0004] The present invention provides a profiled filling mechanism, comprising a template, a stamping upper die and a profiled scraper, wherein the upper surface of the template is provided with a raised profiled rail, a forming cavity is provided in the template, one end of the forming cavity is a filling port, the filling port is located at the profiled rail, the lower surface of the stamping upper die is provided with a stamping surface, the lower surface of the stamping surface can be fitted with the upper surface of the profiled rail, and the bottom of the profiled scraper is provided with a profiled port that can be fitted with the upper surface of the profiled rail.

[0005] Furthermore, the profiled filler mechanism also includes a loading plate, on which a third guide is provided, and the third guide and one end of the profiled rail form a smooth guide rail structure.

[0006] Furthermore, the profiled filling mechanism also includes a filling device, the filling device is slidably mounted on the third guide member, and the profiled scraper is mounted on the filling device.

[0007] Furthermore, the contoured opening of the contoured scraper abuts against the guide rail structure.

[0008] Furthermore, the profiled filler mechanism also includes a blanking plate, on which a fourth guide is provided, and the fourth guide and the other end of the profiled rail form a smooth guide rail structure.

[0009] Furthermore, the blanking plate is also provided with a blanking slope.

[0010] Furthermore, the stamping surface includes at least a first structure, and the first structure is higher than the remaining structure of the stamping surface.

[0011] Furthermore, the filling port is provided with a main body and at least one narrow portion, the minimum width of the main body is greater than the maximum width of the narrow portion, the main body is located at the profiling rail, and the narrow portion is connected to the main body.

[0012] Furthermore, at least two narrow portions are provided on one side of the main body, and part or all of the narrow portions are located outside the profiled rail.

[0013] Furthermore, the cross-section of the profiling rail is trapezoidal, the narrow portion is partially located outside the profiling rail, an inclined surface is provided between adjacent narrow portions, the inclined surface is flush with one side of the profiling rail, narrow portions are provided on both sides of the main body, part or all of the narrow portion is located outside the profiling rail, the profiling rail is cut into a first guide member and a second guide member by a filling port, and the maximum width of the narrow portion is not greater than 1 / 3 of the minimum width of the main body.

[0014] The upper surface of the traditional template is a plane. Compared with the prior art, the present invention is provided with a profiling rail that can fit with the lower surface of the stamping surface, so that the upper surface of the metal powder at the filling port after filling can fit with the lower surface of the stamping surface. During die-casting, the lower surface of the stamping surface can evenly die-cast the metal powder, ensuring that the molded product is evenly pressed and improving the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the enlarged structure of the template of an embodiment of the present invention;

[0017] Figure 3 This is a diagram of the traditional metal powder forming process;

[0018] Figure 4 This is a diagram of the metal powder forming process according to an embodiment of the present invention.

[0019] 1. Template; 11. Profile rail; 111. Inclined surface; 112. First guide; 113. Second guide; 2. Forming cavity; 3. Filling port; 31. Main body; 32. Narrow portion; 33. Inclined surface; 4. Loading plate; 41. Third guide; 5. Filling device; 51. Profile scraper; 6. Unloading plate; 61. Fourth guide; 62. Unloading inclined surface; 7. Stamping upper die. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0022] The present invention provides a profiling filling mechanism, comprising a template 1, a stamping upper die 7, and a profiling scraper 51. The upper surface of the template 1 is provided with a raised profiling rail 11, a forming cavity 2 is provided in the template 1, one end of the forming cavity 2 is a filling port 3, and the filling port 3 is located at the profiling rail 11. The lower surface of the stamping upper die 7 is provided with a stamping surface, and the lower surface of the stamping surface can be fitted with the upper surface of the profiling rail 11. The bottom of the profiling scraper 51 is provided with a profiling port that can be fitted with the upper surface of the profiling rail 11.

[0023] Optionally, the stamping surface includes at least a first structure, and the first structure is higher than the rest of the structure of the stamping surface.

[0024] Among them, Figure 1 , 2 As shown, the template 1 is a circular part. During the die-casting process, metal powder is filled into the molding cavity 2 under the action of the filling mechanism. After filling, the filling mechanism moves along the profiling rail 11 and acts as a scraper on the metal powder at the filling port 3, so that a metal powder pile matching the profiling rail 11 is formed at the filling port 3. The stamping surface is a 3D structure, having at least a first structure higher than other parts, and can be a curved surface or a conical surface structure, such as Figure 4 As shown, the cross section of the stamping surface of the embodiment of the present invention is trapezoidal, and the middle part is higher than the two sides.

[0025] The upper surface of the conventional template 1 is a plane. The embodiment of the present invention is provided with a profiling rail 11 that can fit with the lower surface of the stamping surface, so that the upper surface of the metal powder at the filling port 3 after filling can fit with the lower surface of the stamping surface. Figure 4 As shown, during die-casting, the lower surface of the stamping surface can evenly die-cast the metal powder, ensuring that the molded product is evenly pressed and improving the quality of the finished product.

[0026] Optional, such as Figure 1 As shown, the profiled filler mechanism further includes a loading plate 4 , on which a third guide member 41 is disposed. The third guide member 41 and one end of the profiled rail 11 form a smooth guide rail structure.

[0027] In particular, such as Figure 1 As shown, the profiled filling mechanism further comprises a filling device 5 , and the filling device 5 is slidably mounted on the third guide member 41 .

[0028] The bottom of the filling device 5 is provided with a profiled scraper 51 matched with the third guide member 41. The filling device 5 is filled with metal powder.

[0029] During operation, the filling device 5 moves to the profiling rail 11 of the template 1 and adds metal powder to the filling port 3. After filling, the filling device 5 moves back to the third guide member 41. During the movement, the profiling scraper 51 scrapes the metal powder at the filling port 3, so that a metal powder pile matching the upper surface of the profiling rail 11 is formed at the filling port 3.

[0030] Optional, such as Figure 1 As shown, the profiled filler mechanism further includes a blanking plate 6 , on which a fourth guide member 61 is provided. The fourth guide member 61 and one end of the profiled rail 11 form a smooth guide rail structure.

[0031] Among them, Figure 1 As shown, the first guide member 112 , the second guide member 113 , the third guide member 41 , and the fourth guide member 61 form a guide structure, providing a larger moving space for the filling device 5 .

[0032] In particular, such as Figure 1 As shown, the blanking plate 6 is also provided with a blanking inclined surface 62 .

[0033] The end of the blanking plate 6 away from the template 1 is provided with a downwardly inclined blanking slope 62 to facilitate the sliding out of the die-cast metal parts.

[0034] Optional, such as Figure 1 , 2As shown, the filling port 3 is provided with a main body 31 and at least one narrow portion 32 . The minimum width of the main body 31 is greater than the maximum width of the narrow portion 32 . The main body 31 is located at the profile rail 11 , and the narrow portion 32 is connected to the main body 31 .

[0035] Optional, such as Figure 1 , 2 As shown, at least two narrow portions 32 are provided on one side of the main body portion 31 , and part or all of the narrow portions 32 are located outside the profile rail 11 .

[0036] Optional, such as Figure 1 , 2 As shown, the cross-section of the profiling rail 11 is trapezoidal, part of the narrow portion 32 is located outside the profiling rail 11, an inclined surface 33 is provided between adjacent narrow portions 32, and the inclined surface 33 is flush with one side of the profiling rail 11, and narrow portions 32 are provided on both sides of the main body 31, and part or all of the narrow portions 32 are located outside the profiling rail 11, and the profiling rail 11 is cut into a first guide member 112 and a second guide member 113 by the filling port 3, and the maximum width of the narrow portion 32 is not greater than 1 / 3 of the minimum width of the main body 31.

[0037] Among them, Figure 1 , 2 As shown, the maximum width of the narrow portion 32 and the minimum width of the main body portion 31 refer to the minimum distance between the two opposite side walls of the portion. Figure 1 As shown, the cross section of the profile rail 11 is a regular trapezoid that is narrow at the top and wide at the bottom. Both sides of the profile rail 11 are provided with inclined surfaces 111 extending along the profile rail 11. The narrow portion 32 is located at the inclined surface 111. One end of the narrow portion 32 is located outside the profile rail 11, and the other end is located at the profile rail 11 and is connected to the main body 31. A spacing structure is formed between adjacent narrow portions 32, and an inclined surface 33 is provided on the spacing structure. The inclined surface 33 is flush with the inclined surface 111 on one side of the profile rail 11. Figure 2 As shown, two narrow portions 32 are provided on opposite sides of the main body portion 31 of the upper opening of the filling port 3, and the horizontal plane projections of the main body portion 31 and the narrow portion 32 are both strip-shaped structures.

[0038] In the embodiment of the present invention, a slope 33 is provided in the spacing structure between adjacent narrow portions 32 , so that after die-casting of the filler, the metal powder at the top of the filler port 3 cooperates with the slope 33 to form an inclined structure stacked along the surface of the profile rail 11 .

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the specification of this application, the technicians can still modify or replace the specific implementation mode of the present invention with equivalents, but these modifications or changes do not deviate from the scope of protection of the pending claims of the present application.

Claims

1. A profiled packing mechanism, characterized in that: The profiled filling mechanism comprises a template, a stamping upper die and a profiled scraper, the upper surface of the template is provided with a raised profiled rail, a forming cavity is provided in the template, one end of the forming cavity is a filling port, the filling port is located at the profiled rail, the lower surface of the stamping upper die is provided with a stamping surface, the lower surface of the stamping surface is in contact with the upper surface of the profiled rail, and the bottom of the profiled scraper is provided with a profiled port in contact with the upper surface of the profiled rail; The filling port is provided with a main body and at least one narrow portion, the main body is located at the profiling rail, and the narrow portion is connected to the main body; One side of the main body is provided with at least two narrow portions; The cross section of the profiling rail is a trapezoid, the narrow part is located outside the profiling rail, an inclined surface is provided between adjacent narrow parts, the inclined surface is flush with one side of the profiling rail, narrow parts are provided on both sides of the main body, the profiling rail is cut into a first guide member and a second guide member by a filling port, the maximum width of the narrow part is not greater than 1 / 3 of the minimum width of the main body; the width in the maximum width of the narrow part and the minimum width of the main body refers to the minimum distance between the two opposite side walls of the corresponding narrow part or the main body respectively; The profiled filler mechanism also includes a loading plate, on which a third guide is provided, and the third guide and one end of the profiled rail form a smooth guide rail structure; The profiled filler mechanism also includes a blanking plate, on which a fourth guide is provided, and the fourth guide and the other end of the profiled rail form a smooth guide rail structure; The blanking plate is also provided with a blanking inclined surface; The template is a circular piece; The profiled filling mechanism also includes a filling device, which is slidably mounted on the third guide member, and the profiled scraper is mounted on the filling device.

2. A profiled packing mechanism according to claim 1, characterized in that: The profiling opening of the profiling scraper abuts against the guide rail structure.

3. A profiled packing mechanism according to claim 1, characterized in that: The stamping surface includes at least a first structure, and the first structure is higher than the remaining structure of the stamping surface.

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