Powder metallurgy forming die

Abstract

The utility model discloses a powder metallurgy forming die. The powder metallurgy forming die comprises a die workbench and a powder feeding assembly, a second fixing bolt penetrates through a connecting block and a connecting rod, one end of the connecting rod is connected to one end of a moving rod in a penetrating mode through a first fixing bolt, and a threaded lead screw is installed in one end of the moving rod. A cavity of a forming die is effectively and accurately filled with powder metal, the powder metal can be evenly distributed in a needed shape in a forming cavity, the manual participation frequency can be reduced, the labor intensity of manual operation is reduced, the production efficiency is improved, and the production cost is reduced. And the situation of non-uniform filling or insufficient or excessive filling amount possibly occurring in manual operation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy forming molds, in particular to a powder metallurgy forming mold. Background Technique

[0002] The powder metallurgy forming mold is a process for manufacturing materials, in which metal powder is used as the raw material and finished parts are made through steps such as forming and sintering. In the powder metallurgy process, the forming molds play a crucial role. They are used to press the metal powder into parts of the required shape.

[0003] In the prior art, a powder metallurgy forming mold solution is disclosed. First, the metal powder is filled into the cavity of the forming mold. Once the metal powder is filled into the mold, pressure is applied to the powder to compress and form it. The compaction process can be completed by unidirectional pressure, isostatic pressure or synchronous bidirectional pressure. The powder is evenly distributed in the mold and forms the required shape.

[0004] In this solution, when adding the powder metal into the inner cavity of the mold, it is necessary for workers to continuously operate to add the powder metal manually. The long-term repeated operation is likely to cause worker fatigue. Adding the powder metal into the inner cavity of the mold may result in too much or too little powder metal being added, which is likely to cause defects in the powder metal forming model.

[0005] Therefore, it is necessary to provide a powder metallurgy forming mold to solve the above technical problems. Content of the Utility Model

[0006] In view of the above situation, to overcome the defects of the prior art, the utility model provides a powder metallurgy forming mold that can replace manual operation to pour the powder metal into the inner cavity of the mold, and can accurately control the amount of powder metal poured each time or reduce errors.

[0007] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0008] The powder metallurgy forming mold includes: a mold workbench and a powder feeding assembly. The mold workbench includes a forming mold assembly and a rear mold. The rear mold penetrates through the mold workbench. A powder box is provided at the upper end of the rear mold. A through hole is opened inside the powder box. A funnel is provided at the upper end of the powder box. One end of the powder box is fixedly installed with a connecting block. A second fixing bolt penetrates through the connecting block and the connecting rod. One end of the connecting rod is connected to one end of the moving rod through a first fixing bolt. A threaded lead screw is installed inside one end of the moving rod. A servo motor is fixedly installed at one end of the threaded lead screw. A support plate is provided at the lower end of the servo motor. A control terminal is provided on the upper end of the mold workbench.

[0009] Preferably, a pushing rubber plate is fixedly installed at one end of the powder box, and a wear-resistant sheet is fixedly installed at the lower end of the powder box.

[0010] Preferably, a fixing frame is provided at the upper end of the mold workbench. The fixing frame includes a forming mold assembly. A hydraulic cylinder is installed on the forming mold assembly. A first guide post is provided at the lower end of the hydraulic cylinder. A push plate is installed at the lower end of the first guide post. A first template is fixedly installed at the lower end of the push plate. A spring and a positioning post are provided at the lower end of the first template. The lower end of the spring is fixedly installed on the front template. The positioning post penetrates through the inside of the front template. The lower end of the positioning post penetrates into the inside of the mold workbench. A guide sleeve is provided on the outer side of the positioning post.

[0011] Preferably, the guide sleeve is installed inside the mold workbench. The front template corresponds and fits with the rear template. A forming cavity is formed inside the rear template.

[0012] Preferably, a material placing groove is provided at one end side of the rear template. One end of the material placing groove is of an inclined plate structure.

[0013] Preferably, a second guide post is provided at the lower end of the rear template. A cylinder is provided on the second guide post. A movable post is provided inside the forming cavity of the rear template. The cylinder and the movable post are fixedly installed on a cross beam plate. The cross beam plate is installed on a base.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) By using a threaded lead screw, a moving rod, a connecting rod, a servo motor and a powder box, the utility model moves the powder box to the position area of the forming cavity of the rear template, effectively and precisely fills the powder metal into the cavity of the forming mold, helps to evenly distribute the powder metal in the required shape inside the forming cavity, can reduce the frequency of manual participation, lower the labor intensity of manual operation, and improve production efficiency. It avoids the situations of uneven filling, insufficient filling amount or excessive filling amount that may occur in manual operation, thereby reducing production defects and waste rates caused by operation errors.

[0016] (2) By using the movement of the pushing rubber plate, the powder forming model can be pushed into the material placing groove 106, avoiding damage or deformation caused by pushing the powder forming model, effectively pushing out and moving the powder forming model to a specified position, reducing manual operation and taking, thereby improving the safety of the production process. By using the wear-resistant sheet, direct contact between metal parts can be reduced, friction and wear can be lowered, and the service life of parts can be prolonged.

[0017] (3) The utility model effectively places multiple powder molding models by using a feeding trough and an inclined plate, avoiding the accumulation caused by the staff's inability to take out the powder molding models in time, and preventing the front template from squeezing, damaging or deforming the molding models, thereby improving the safety of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the first perspective of the powder metallurgy molding die provided by the utility model;

[0019] Figure 2 is a schematic structural diagram of the die table of the powder metallurgy molding die provided by the utility model;

[0020] Figure 3 is a schematic structural diagram of the powder feeding assembly of the powder metallurgy molding die provided by the utility model;

[0021] Figure 4 is a schematic structural diagram of the second perspective of the powder metallurgy molding die provided by the utility model;

[0022] Figure 5 is Figure 4 an enlarged view of part A;

[0023] Figure 6 is a schematic structural diagram of the third perspective of the powder metallurgy molding die provided by the utility model;

[0024] Figure 7 is a schematic structural diagram of the cylinder and the second guide post of the powder metallurgy molding die provided by the utility model;

[0025] Among them, the names corresponding to the reference numerals are: 100, die table; 102, base; 103, fixing frame; 104, control terminal; 105, support plate; 106, feeding trough; 200, powder feeding assembly; 201, servo motor; 202, threaded lead screw; 203, moving rod; 204, connecting rod; 205, first fixing bolt; 206, connecting block; 207, second fixing bolt; 208, funnel; 209, powder box; 210, wear-resistant piece; 211, pushing rubber plate; 300, molding die assembly; 301, hydraulic cylinder; 302, first guide post; 303, push plate; 304, spring; 305, front template; 306, positioning post; 307, first template; 309, guide sleeve; 310, rear template; 312, molding cavity; 313, cylinder; 314, movable column; 315, cross beam plate; 316, second guide post. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following further illustrates the utility model in conjunction with the drawings and embodiments. The implementation manners of the utility model include but are not limited to the following embodiments.

[0027] First Embodiment:

[0028] As Figures 1-3 、 Figure 5 shown, the powder metallurgy forming die provided by the present utility model includes: a die workbench 100 and a powder feeding assembly 200. The die workbench 100 includes a forming die assembly 300 and a rear template 310. The rear template 310 is provided with a powder forming cavity 312 body, into which metal powder can be loaded into the model in the forming cavity 312 body. The rear template 310 penetrates through the die workbench 100. The die workbench 100 is provided with a through hole that fits and coincides with the size of the rear template 310, and the rear template 310 can move. A powder box 209 is provided at the upper end of the rear template 310. A through hole is provided inside the powder box 209. A funnel 208 is provided at the upper end of the powder box 209. One end of the powder box 209 is fixedly installed with a connecting block 206. A second fixing bolt 207 penetrates through the connecting block 206 and the inside of the connecting rod 204. One end of the connecting rod 204 is connected to one end of the moving rod 203 through a first fixing bolt 205. A threaded lead screw 202 is installed inside one end of the moving rod 203. One end of the threaded lead screw 202 is connected and fixed to the servo motor 201 through a screw. By starting the operation of the servo motor 201, the threaded lead screw 202 will be driven to rotate and the moving rod 203 will move back and forth, thereby pushing the powder box 209 to move to the position area of the forming cavity 312 of the rear template 310, and adding powdered metal into the cavity of the rear template 310. The lower end of the servo motor 201 is connected and fixed to the support plate 105 through a bolt. The control terminal 104 is connected and fixed to the upper end of the die workbench 100 through a screw. In actual use, first, the staff adds powdered metal to the powder box 209, starts the servo motor 201, drives the threaded lead screw 202 to rotate in the clockwise and counterclockwise directions, thereby driving the powder box 209 to move to the position area of the forming cavity 312 of the rear template 310 to add powdered metal, and move out of the position area of the forming cavity 312 of the rear template 310. Then, the hydraulic cylinder 301 pushes the first template 307 and the front template 305 to extrude, and extrudes the powdered metal in the cavity of the rear template 310 into a shape. The formed model is pushed out by the movement of the rear template 310. Powdered metal is added to the powder box 209. The pouring of the powder box 209 is calculated in advance in a proportional amount. During the movement, the formed model is pushed out of the position area of the rear template 310 into the discharge chute 106.

[0029] In this embodiment, by using the threaded lead screw 202, the moving rod 203, the connecting rod 204, the servo motor 201, and the powder box 209, the powder box 209 is moved to the position area of the forming cavity 312 of the rear template 310, effectively and precisely filling the powder metal into the cavity of the forming mold, which helps to evenly distribute the powder metal in the required shape inside the forming cavity 312, can reduce the frequency of manual participation, lower the labor intensity of manual operation, and improve production efficiency, avoiding the situations of uneven filling, insufficient filling amount, or excessive filling amount that may occur in manual operation, thereby reducing production defects and reject rates caused by operation errors.

[0030] Second Embodiment:

[0031] As Figures 2-3 shown, one end of the powder box 209 is connected and fixed to the pushing rubber plate 211 by bolts. The pushing rubber plate 211 can push the powder forming model into the feeding trough 106. The pushing rubber plate 211 is made of rubber material with an elastic structure, avoiding damage or deformation to the powder forming model during pushing. The lower end of the powder box 209 is connected and fixed to the wear-resistant piece 210 by screws. The wear-resistant piece 210 is made of polytetrafluoroethylene (PTFE) material, having good wear resistance and self-lubricity. The wear-resistant piece 210 can reduce the direct contact between metal parts, lower the friction and wear, and extend the service life of the parts.

[0032] In this embodiment, by using the movement of the pushing rubber plate 211, the powder forming model can be pushed into the feeding trough 106, avoiding damage or deformation to the powder forming model during pushing, effectively pushing out and moving the powder forming model to the designated position, reducing manual operation for taking, thereby improving the safety of the production process. By using the wear-resistant piece 210, the direct contact between metal parts can be reduced, the friction and wear can be lowered, and the service life of the parts can be extended.

[0033] Third Embodiment:

[0034] As Figure 1 、 Figures 4-5As shown in the figure, the upper end of the mold workbench 100 is connected and fixed with the fixing frame 103 by welding. The fixing frame 103 includes a forming mold assembly 300. The forming mold assembly 300 is connected and fixed with the hydraulic cylinder 301 by bolts. The lower end of the hydraulic cylinder 301 is connected and fixed with the first guide post 302 by screws. The lower end of the first guide post 302 is connected and fixed with the push plate 303 by bolts. The lower end of the push plate 303 is connected and fixed with the first template 307 by bolts. The lower end of the first template 307 is connected and fixed with the spring 304 and the positioning post 306 by bolts. The lower end of the spring 304 is connected and fixed with the front template 305 by bolts. The spring 304 plays a role of buffering and pressure transmission in this device. When the first template 307 presses down the front template 305, the spring 304 can absorb and relieve the impact force caused by the extrusion. The positioning post 306 penetrates through the inside of the front template 305. The positioning post 306 is installed with a stop block, which can block or support the front template 305 to prevent it from sliding downwards and reduce the bearing force of the spring 304. The lower end of the positioning post 306 penetrates into the inside of the mold workbench 100. The penetration of the positioning post 306 is inside the guide sleeve 309. The positioning post 306 can keep the first template 307, the front template 305 and the rear template 310 moving on the same level. When the first template 307 moves downwards, the positioning post 306 moves inside the front template 305 and the guide sleeve 309. The guide sleeve 309 is also installed inside the front template 305, which can reduce the friction between the positioning post 306, the front template 305 and the mold workbench 100, avoid serious wear of the positioning post 306, the front template 305 and the mold workbench 100, and increase the service life.

[0035] Fourth Embodiment:

[0036] As Figure 2 、 Figures 4-5 、 Figure 7 shown, the guide sleeve 309 is installed inside the mold workbench 100. The front template 305 and the rear template 310 correspond and fit with each other, so as to press and form the powder metal parts. A forming cavity 312 is opened inside the rear template 310.

[0037] Fifth Embodiment:

[0038] As Figure 2 shown, a material feeding groove 106 is opened at one end side of the rear template 310. One end of the material feeding groove 106 is of an inclined plate structure. The powder forming model is pushed out of the surface of the rear template 310 by moving the pushing rubber plate 211. The inclined plate helps the powder forming model slide into the material feeding groove 106.

[0039] In this embodiment, by using the feeding trough 106 and the inclined plate, a plurality of powder molding models can be effectively placed, avoiding the accumulation caused by the staff not having enough time to take out the powder molding models, and avoiding the extrusion damage or deformation of the molding models by the front template 305, thereby improving the safety of the production process.

[0040] Sixth Embodiment:

[0041] As Figure 1 、 Figure 7 As shown, the lower end of the rear template 310 is fixedly connected to the second guide post 316 by screws, and the second guide post 316 is fixedly connected to the cylinder 313 by bolts. The second guide post 316 and the rear template 310 can be lifted and lowered by the cylinder 313. The movable post 314 is lifted and lowered in the molding cavity 312 of the rear template 310. When descending, the molded part model in the molding cavity 312 is ejected from the rear template 310. The movable post 314 penetrates inside the molding cavity 312. The cylinder 313 and the movable post 314 are fixedly connected to the cross beam plate 315 by bolts, and the cross beam plate 315 is installed on the base 102.

[0042] During use, first, the staff adds powdered metal to the powder box 209, starts the servo motor 201, drives the threaded lead screw 202 to rotate clockwise and counterclockwise, thereby driving the powder box 209 to move to the position area of the molding cavity 312 of the rear template 310 to add powdered metal, and then moves out of the position area of the molding cavity 312 of the rear template 310. After that, the hydraulic cylinder 301 pushes the first template 307 and the front template 305 to perform extrusion, extruding the powdered metal in the cavity of the rear template 310 into a mold. The molded model is ejected by the movement of the rear template 310. Powdered metal is added to the powder box 209, and the pouring of the powder box 209 is calculated in advance in proportion by quantity. While moving, the molded model is pushed out of the position area of the rear template 310 into the feeding trough 106. The second guide post 316 and the rear template 310 can be lifted and lowered by the cylinder 313. The movable post 314 is lifted and lowered in the molding cavity 312 of the rear template 310. When descending, the molded part model in the molding cavity 312 is ejected from the rear template 310.

[0043] The above embodiments are only one of the preferred embodiments of the present invention and should not be used to limit the protection scope of the present invention. Any meaningless changes or refinements made to the main design concept and spirit of the present invention, as long as the technical problems solved are still the same as those of the present invention, should be included in the protection scope of the present invention.

Claims

1. A powder metallurgy forming die, characterized in that Including: A mold workbench (100) and a powder feeding assembly (200). The mold workbench (100) includes a forming mold assembly (300) and a rear template (310). The rear template (310) penetrates through the mold workbench (100). A powder box (209) is provided at the upper end of the rear template (310). A through hole is formed inside the powder box (209). A funnel (208) is provided at the upper end of the powder box (209). A connecting block (206) is fixedly installed at one end of the powder box (209). A second fixing bolt (207) penetrates through the connecting block (206) and the connecting rod (204). One end of the connecting rod (204) is connected to one end of a moving rod (203) through a first fixing bolt (205). A threaded lead screw (202) is installed inside one end of the moving rod (203). A servo motor (201) is fixedly installed at one end of the threaded lead screw (202). A support plate (105) is provided at the lower end of the servo motor (201). A control terminal (104) is provided at the upper end of the mold workbench (100).

2. The powder metallurgy forming die according to claim 1, characterized in that, A pushing rubber plate (211) is fixedly installed at one end of the powder box (209). A wear-resistant piece (210) is fixedly installed at the lower end of the powder box (209).

3. A powder metallurgy forming die according to claim 1, characterized in that, A fixing frame (103) is provided at the upper end of the mold workbench (100). The fixing frame (103) includes a forming mold assembly (300). A hydraulic cylinder (301) is installed on the forming mold assembly (300). A first guide post (302) is provided at the lower end of the hydraulic cylinder (301). A push plate (303) is installed at the lower end of the first guide post (302). A first template (307) is fixedly installed at the lower end of the push plate (303). A spring (304) and a positioning post (306) are provided at the lower end of the first template (307). The lower end of the spring (304) is fixedly installed on a front template (305). The positioning post (306) penetrates through the front template (305). The lower end of the positioning post (306) penetrates into the mold workbench (100). A guide sleeve (309) is provided outside the positioning post (306).

4. A powder metallurgy forming die according to claim 3, characterized in that, The guide sleeve (309) is installed inside the mold workbench (100). The front template (305) corresponds to and fits with the rear template (310). A forming cavity (312) is formed inside the rear template (310).

5. A powder metallurgy forming die according to claim 4, characterized in that, A material discharging groove (106) is provided on one side of one end of the rear template (310). One end of the material discharging groove (106) is of an inclined plate structure.

6. A powder metallurgy forming die according to claim 4, wherein, A second guide post (316) is provided at the lower end of the rear template (310). An air cylinder (313) is provided on the second guide post (316). A movable column (314) is provided inside the forming cavity (312) of the rear template (310). The air cylinder (313) and the movable column (314) are fixedly installed on a cross beam plate (315). The cross beam plate (315) is installed on a base (102).

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