Powder metallurgy die

Abstract

The invention belongs to the technical field of powder metallurgy, and particularly relates to a powder metallurgy die which comprises a supporting frame, an upper supporting plate, an upper male die, a female die, a lower die plate and a base. A powder feeding box controlled by an electric telescopic rod is slidably assembled in the supporting frame, a square ring is slidably assembled on the front side of the powder feeding box, and a cleaning cylinder is rotatably assembled in the square ring; a material pushing plate is assembled on the front side of the square ring in a sliding mode, the control piece comprises two L-shaped rods which are fixedly arranged on the rear side of the powder feeding box and are distributed in a bilateral symmetry mode, and the square ring is provided with a driving assembly matched with the cleaning cylinder. An electric telescopic rod drives a powdering box to move, the powdering box synchronously drives a square ring to move, the square ring drives a cleaning barrel to move to the upper side of a female die, and under driving of a driving assembly, the cleaning barrel cleans the inner wall of the female die and the upper side wall of a lower die plate, so that the female die and an upper die plate are kept clean and tidy, and loss caused by friction is reduced; the service life of the mold is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of powder metallurgy, and in particular relates to a powder metallurgy mould. Background Art

[0002] In the powder metallurgy process, it is necessary to use a mold in conjunction with a hydraulic press to press the powder into a green part, and then perform subsequent treatments such as sintering. The existing powder metallurgy mold generates friction between the upper and lower molds during the production process. Although lubricants are added to the powder filled into the mold, the lubricant added to the powder raw material is limited due to the density requirements of the green part, and during the production process, powder will remain in the mold. During the long-term working process of the mold, especially when some metal powder raw materials with higher hardness are pressed, the loss caused by friction will gradually increase, and finally the molding accuracy and quality of the mold will be greatly reduced. Therefore, a powder metallurgy mold is needed to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a powder metallurgy mold, which drives an upper powder box to move through an electric telescopic rod, and the upper powder box synchronously drives a square ring to move, and the square ring drives a cleaning cylinder to move to the upper side of a die. Driven by a driving component, the cleaning cylinder cleans the inner wall of the die and the upper side wall of a lower mold plate, thereby keeping the die and the upper mold plate clean, reducing the loss caused by friction, and extending the service life of the mold.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0005] A powder metallurgy mold comprises a support frame, an upper support plate, an upper punch, a die, a lower mold plate and a base, wherein the upper support plate is slidably mounted inside the support frame, the upper punch is fixedly mounted on the lower side of the upper support plate, the die is mounted inside the support frame, the die is located on the lower side of the upper punch, the base is fixedly mounted inside the support frame, the base is located on the lower side of the die, the lower mold plate is slidably mounted on the upper side of the base, an ejection hydraulic cylinder is mounted on the upper side of the base, the output end of the ejection hydraulic cylinder is fixedly connected to the lower side wall of the lower mold plate, the support A downward-pressing hydraulic cylinder is fixedly arranged on the upper side of the frame, and the output end of the downward-pressing hydraulic cylinder is fixedly connected to the upper supporting plate, and a plurality of guide pillars matching the upper supporting plate are fixedly arranged on the upper side of the concave die, and a loading plate matching the concave die is fixedly arranged inside the support frame, and a powder loading box is slidably mounted on the upper side of the loading plate, and a square ring is slidably mounted on the front side of the powder loading box, and a cleaning cylinder is rotatably mounted in the square ring, and a push plate is slidably mounted on the front side of the square ring, and the square ring is provided with a driving assembly matching the cleaning cylinder, and a control member matching the powder loading box is provided on the side wall of the support frame;

[0006] The control component includes two L-shaped rods fixedly provided at the rear side of the upper powder box and distributed symmetrically on the left and right sides, and electric telescopic rods are fixedly provided on the left and right side walls of the support frame, and the output ends of the electric telescopic rods are fixedly connected to the side walls of the L-shaped rods.

[0007] The driving assembly includes a circular table fixedly provided on the upper side of the square ring, a circular shaft rotatably assembled on the lower side of the circular table, a cross bar fixedly provided on the lower side of the circular shaft, a through hole opened on the cross bar, a long rod matching the through hole slidably assembled on the cross bar, a cleaning motor is installed on the lower side of the long rod, the output shaft of the cleaning motor is transmission connected with the cleaning cylinder, a first spring is fixedly provided between the side wall of the cleaning motor and the side wall of the circular shaft, an annular guide groove is opened on the upper side of the square ring, a roller matching the annular guide groove is rotatably assembled on the lower side of the long rod, a first gear is concentrically fixed on the upper side of the circular shaft, a second gear meshing with the first gear is rotatably assembled on the lower side of the circular table, a rotating motor is installed on the lower side of the circular table, and the output shaft of the rotating motor is transmission connected with the second gear.

[0008] A circular groove is provided on the upper side of the circular table, an elliptical rod matching the circular groove is coaxially rotatably mounted on the upper side of the circular shaft, two symmetrically distributed third gears are rotatably mounted on the upper side of the elliptical rod, a plurality of tooth grooves meshing with the third gears are provided on the side wall of the circular groove, a first cleaning disk is concentrically fixed on the upper side of the third gear, and a second cleaning disk is concentrically fixed on the upper side of the circular shaft.

[0009] Limiting parts matching the square ring are provided on the left and right sides of the support frame, and the limiting parts include a vertical groove provided on the inner side wall of the support frame, a limiting block matching the vertical groove is slidably mounted inside the support frame, the limiting block has a T-shaped hole, a T-shaped block matching the T-shaped hole is fixedly provided on the side wall of the truncated table, an L-shaped plate matching the limiting block is slidably mounted in the vertical groove, a second spring is fixedly provided between the inner side wall of the L-shaped plate and the side wall of the limiting block, and a third spring is fixedly provided between the lower side wall of the L-shaped plate and the side wall of the vertical groove.

[0010] A plurality of symmetrically distributed supporting blocks are fixedly arranged between the concave mold and the base.

[0011] The upper sides of the limit blocks are processed into inclined surfaces.

[0012] A long groove is provided on the lower side of each vertical groove, and a baffle matching the long groove is fixedly provided on the lower side of each L-shaped plate.

[0013] A material receiving plate matching the die is fixedly provided on the front side of the support frame.

[0014] The present invention drives the upper powder box to move by an electric telescopic rod, and the upper powder box synchronously drives the square ring to move, and the square ring drives the cleaning cylinder to move to the upper side of the die. Driven by the driving component, the cleaning cylinder cleans the inner wall of the die and the upper side wall of the lower mold plate, so as to keep the die and the upper mold plate clean, reduce the loss caused by friction, and extend the service life of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0016] Figure 1 It is a schematic structural diagram of a powder metallurgy mold embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the cross-sectional structure of a powder metallurgy mold embodiment of the present invention Figure 1 ;

[0018] Figure 3 A schematic diagram of the cross-sectional structure of a powder metallurgy mold embodiment of the present invention Figure 2 ;

[0019] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 5 The structure of the square ring of a powder metallurgy mold embodiment of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0022] Figure 7 The structure of the square ring of a powder metallurgy mold embodiment of the present invention is shown in FIG. Figure 2 .

[0023] The main component symbols are described as follows:

[0024] Support frame 1, upper support plate 10, upper punch 11, die 12, lower template 13, base 14, ejection hydraulic cylinder 15, downward pressure hydraulic cylinder 16, guide column 17, loading plate 18, upper powder box 19, square ring 20, cleaning cylinder 21, push plate 22, L-shaped rod 23, electric telescopic rod 24, round table 25, round shaft 26, cross bar 27, long rod 28, cleaning motor 29, first spring 30, annular guide groove 31, first gear 32, second gear 33, rotating motor 34, round groove 40, elliptical rod 41, third gear 42, tooth groove 43, first cleaning disk 44, second cleaning disk 45, vertical groove 50, limit block 51, T-block 52, L-shaped plate 53, second spring 54, third spring 55, support block 60, baffle 61, receiving plate 65. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] like Figure 1-7 As shown, a powder metallurgy mold of the present invention includes a support frame 1, an upper support plate 10, an upper punch 11, a die 12, a lower template 13 and a base 14, the upper support plate 10 is slidably assembled inside the support frame 1, the upper punch 11 is fixedly mounted on the lower side of the upper support plate 10, the die 12 is mounted inside the support frame 1, the die 12 is located at the lower side of the upper punch 11, the base 14 is fixedly mounted inside the support frame 1, the base 14 is located at the lower side of the die 12, the lower template 13 is slidably assembled on the upper side of the base 14, an ejection hydraulic cylinder 15 is installed on the upper side of the base 14, the output end of the ejection hydraulic cylinder 15 is fixedly connected to the lower side wall of the lower template 13, and the support frame 10 is slidably assembled inside the support frame 1, the upper punch 11 is fixedly mounted on the lower side of the upper punch 11, the die 12 is located at the lower side of the upper punch 11, the base 14 is fixedly mounted inside the support frame 1, the base 14 is located at the lower side of the die 12, the lower template 13 is slidably assembled on the upper side of the base 14, and an ejection hydraulic cylinder 15 is installed on the upper side of the base 14, and the output end of the ejection hydraulic cylinder 15 is fixedly connected to the lower side wall of the lower template 13. A downward-pressing hydraulic cylinder 16 is fixedly arranged on the upper side of the support frame 1, and the output end of the downward-pressing hydraulic cylinder 16 is fixedly connected to the upper support plate 10. A plurality of guide pillars 17 matching the upper support plate 10 are fixedly arranged on the upper side of the concave die 12. A loading plate 18 matching the concave die 12 is fixedly arranged inside the support frame 1. A powder loading box 19 is slidably mounted on the upper side of the loading plate 18. A square ring 20 is slidably mounted on the front side of the powder loading box 19. A cleaning cylinder 21 is rotatably mounted inside the square ring 20. A push plate 22 is slidably mounted on the front side of the square ring 20. The square ring 20 is provided with a driving assembly matching the cleaning cylinder 21. A control component matching the powder loading box 19 is provided on the side wall of the support frame 1.

[0027] The control part includes two L-shaped rods 23 fixedly provided at the rear side of the upper powder box 19 and symmetrically distributed on the left and right sides. The left and right side walls of the support frame 1 are both fixedly provided with electric telescopic rods 24. The output ends of the electric telescopic rods 24 are both fixedly connected to the side walls of the L-shaped rods 23.

[0028] When the present invention is used, the output end of the electric telescopic rod 24 is retracted, and the upper powder box 19 is driven to move through the L-shaped rod 23, and the upper powder box 19 slides toward the die 12, synchronously driving the square ring 20 and the cleaning cylinder 21 to move, and the square ring pushes the push plate 22 to move, and the push plate 22 pushes the produced product out. When the square rod 20 is vertically aligned with the die 12, the electric telescopic rod 24 stops running, and the driving component drives the cleaning cylinder 21 to clean the inner wall of the die 12, the lower template 13 and the upper punch 11, thereby reducing the friction between the molds. After the cleaning is completed, the output end of the electric telescopic rod 24 is The output end continues to shrink, so that the upper powder box 19 fills the inside of the die 12 with powder, the electric telescopic rod 24 drives the identity 19 and the square ring 20 to return to their original positions, and the output end of the downward hydraulic cylinder 15 drives the upper support plate 10 to move downward, so that the upper punch 11 extends into the inside of the die 12, and the metallurgical powder is hydraulically formed. After the metallurgical powder is formed, the upper support plate 10 drives the upper punch 11 to separate from the die 12, and the output end of the ejection hydraulic cylinder 15 drives the lower template 13 to move upward, so that the molded product is ejected from the die 12, which is convenient for the ejection of the push plate 22, thereby realizing automated production and improving production efficiency;

[0029] The present invention drives the upper powder box to move by an electric telescopic rod, and the upper powder box synchronously drives the square ring to move, and the square ring drives the cleaning cylinder to move to the upper side of the die. Driven by the driving component, the cleaning cylinder cleans the inner wall of the die and the upper side wall of the lower mold plate, so as to keep the die and the upper mold plate clean, reduce the loss caused by friction, and extend the service life of the mold.

[0030] The driving assembly includes a round table 25 fixedly provided on the upper side of the square ring 20, a round shaft 26 rotatably provided on the lower side of the round table 25, a cross bar 27 fixedly provided on the lower side of the round shaft 26, a through hole provided on the cross bar 27, a long rod 28 matching the through hole slidably provided on the cross bar 27, a cleaning motor 29 installed on the lower side of the long rod 28, the output shaft of the cleaning motor 29 is transmission-connected with the cleaning cylinder 21, a first spring 30 is fixedly provided between the side wall of the cleaning motor 29 and the side wall of the round shaft 26, an annular guide groove 31 is provided on the upper side of the square ring 20, a roller matching the annular guide groove 31 is rotationally provided on the lower side of the long rod 28, a first gear 32 is concentrically fixedly provided on the upper side of the round shaft 26, a second gear 33 meshing with the first gear 32 is rotationally provided on the lower side of the round table 25, a rotating motor 34 is installed on the lower side of the round table 25, and the output shaft of the rotating motor 34 is transmission-connected with the second gear 33;

[0031] A circular groove 40 is provided on the upper side of the circular table 25, an elliptical rod 41 matching the circular groove 40 is coaxially rotatably mounted on the upper side of the circular shaft 26, two symmetrically distributed third gears 42 are rotatably mounted on the upper side of the elliptical rod 41, a plurality of tooth grooves 43 meshing with the third gears 42 are provided on the side wall of the circular groove 40, a first cleaning disc 44 is concentrically fixedly mounted on the upper side of the third gear 42, and a second cleaning disc 45 is concentrically fixedly mounted on the upper side of the circular shaft 26;

[0032] The left and right sides of the support frame 1 are both provided with limit members matching the square ring 20, and the limit members include a vertical slot 50 provided on the inner side wall of the support frame 1, a limit block 51 matching the vertical slot 50 is slidably mounted inside the support frame 1, the limit block 51 is provided with a T-shaped hole, a T-shaped block 52 matching the T-shaped hole is fixedly mounted on the side wall of the round table 25, an L-shaped plate 53 matching the limit block 51 is slidably mounted in the vertical slot 50, a second spring 54 is fixedly mounted between the inner side wall of the L-shaped plate 53 and the side wall of the limit block 51, and a third spring 55 is fixedly mounted between the lower side wall of the L-shaped plate 53 and the side wall of the vertical slot 50;

[0033] When the present invention is used, the electric telescopic rod 24 drives the upper powder box 19 to move, and synchronously drives the square ring 20 to move, so that the T-block 52 on the side wall of the round table 25 is inserted into the T-hole of the limit block 51. When the square ring 20 is aligned with the die 12, the output end of the downward pressure hydraulic cylinder 15 drives the upper support plate 10 and the upper punch 11 to move downward, and the lower side wall of the upper support plate 10 abuts against the upper side wall of the limit block 51. Under the limit of the T-block 52, the limit block 51 moves vertically downward, so that the third spring 55 is compressed, and the round table 25 synchronously drives the square ring 20 to move downward. After the cleaning cylinder 21 extends into the lower side of the die 12, the cleaning motor 29 is The output shaft drives the cleaning cylinder 21 to rotate, the rotating motor 34 synchronously drives the second gear 33 to rotate, the second gear 33 synchronously drives the meshing first gear 32 to rotate, the first gear 32 drives the circular shaft 26 to rotate, the circular shaft 26 drives the upper elliptical rod 41 to rotate, the elliptical rod 41 and the third gear 42 rotate, the third gear 42 meshes with the tooth groove 43, and thus rotates, so that the first cleaning disk 44 and the second cleaning disk 45 clean the lower side wall of the upper punch 11, and at the same time the cleaning cylinder 21 cleans the inner wall of the die 12 and the lower template 13, sweeping away the internal powder and debris, reducing friction and reducing loss.

[0034] A plurality of symmetrically distributed support blocks 60 are fixedly provided between the die 12 and the base 14; when the die 12 and the lower mold plate 13 are cleaned, the ejection hydraulic cylinder 15 drives the lower mold plate 13 and the base 14 to be in the same plane, so that the cleaning cylinder 21 can clean the powder and debris out of the lower mold plate 13, thereby ensuring the smooth use of the device.

[0035] The upper sides of the limit blocks 51 are processed into inclined surfaces; during the use of the present invention, after the loading box 19 resets the inside of the die 12 after the powder is filled, when the output end of the downward pressure hydraulic cylinder 15 drives the upper support plate 10 to move downward, the lower side wall of the lower support plate 10 abuts against the upper side of the limit blocks 51, and the limit blocks 51 are pushed back into the vertical groove 50 through the inclined surface, so that the lower support plate 10 moves downward smoothly, ensuring the smooth use of the device.

[0036] A long groove is formed on the lower side of the vertical groove 50 , and a baffle 61 matching the long groove is fixedly provided on the lower side of the L-shaped plate 53 , so as to prevent powder etc. from entering the vertical groove 50 and ensure the normal use of the L-shaped plate 53 and the third spring 55 .

[0037] A receiving plate 65 matching the die 12 is fixedly provided on the front side of the support frame 1 to facilitate the push plate 22 to push out and place the formed product.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A powder metallurgy mold, comprising a support frame, an upper support plate, an upper punch, a die, a lower mold plate and a base, wherein the upper support plate is slidably mounted inside the support frame, the upper punch is fixedly mounted on the lower side of the upper support plate, the die is mounted inside the support frame, the die is located on the lower side of the upper punch, the base is fixedly mounted inside the support frame, the base is located on the lower side of the die, and the lower mold plate is slidably mounted on the upper side of the base, characterized in that: An ejection hydraulic cylinder is installed on the upper side of the base, and the output end of the ejection hydraulic cylinder is fixedly connected to the lower side wall of the lower template, a downward pressure hydraulic cylinder is fixedly provided on the upper side of the support frame, and the output end of the downward pressure hydraulic cylinder is fixedly connected to the upper supporting plate, a plurality of guide pillars matching the upper supporting plate are fixedly provided on the upper side of the concave die, a loading plate matching the concave die is fixedly provided inside the support frame, a powder box is slidably mounted on the upper side of the loading plate, a square ring is slidably mounted on the front side of the powder box, a cleaning cylinder is rotatably mounted in the square ring, a pusher plate is slidably mounted on the front side of the square ring, a driving assembly matching the cleaning cylinder is provided on the square ring, and a control component matching the powder box is provided on the side wall of the support frame; The control component includes two L-shaped rods fixedly provided at the rear side of the upper powder box and distributed symmetrically on the left and right sides, and electric telescopic rods are fixedly provided on the left and right side walls of the support frame, and the output ends of the electric telescopic rods are fixedly connected to the side walls of the L-shaped rods.

2. A powder metallurgy mold according to claim 1, characterized in that: The driving assembly includes a circular table fixedly provided on the upper side of the square ring, a circular shaft rotatably assembled on the lower side of the circular table, a cross bar fixedly provided on the lower side of the circular shaft, a through hole opened on the cross bar, a long rod matching the through hole slidably assembled on the cross bar, a cleaning motor is installed on the lower side of the long rod, the output shaft of the cleaning motor is transmission connected with the cleaning cylinder, a first spring is fixedly provided between the side wall of the cleaning motor and the side wall of the circular shaft, an annular guide groove is opened on the upper side of the square ring, a roller matching the annular guide groove is rotatably assembled on the lower side of the long rod, a first gear is concentrically fixed on the upper side of the circular shaft, a second gear meshing with the first gear is rotatably assembled on the lower side of the circular table, a rotating motor is installed on the lower side of the circular table, and the output shaft of the rotating motor is transmission connected with the second gear.

3. A powder metallurgy mold according to claim 2, characterized in that: A circular groove is provided on the upper side of the circular table, an elliptical rod matching the circular groove is coaxially rotatably mounted on the upper side of the circular shaft, two symmetrically distributed third gears are rotatably mounted on the upper side of the elliptical rod, a plurality of tooth grooves meshing with the third gears are provided on the side wall of the circular groove, a first cleaning disk is concentrically fixed on the upper side of the third gear, and a second cleaning disk is concentrically fixed on the upper side of the circular shaft.

4. A powder metallurgy mold according to claim 3, characterized in that: Limiting parts matching the square ring are provided on the left and right sides of the support frame, and the limiting parts include a vertical groove provided on the inner side wall of the support frame, a limiting block matching the vertical groove is slidably mounted inside the support frame, the limiting block has a T-shaped hole, a T-shaped block matching the T-shaped hole is fixedly provided on the side wall of the truncated table, an L-shaped plate matching the limiting block is slidably mounted in the vertical groove, a second spring is fixedly provided between the inner side wall of the L-shaped plate and the side wall of the limiting block, and a third spring is fixedly provided between the lower side wall of the L-shaped plate and the side wall of the vertical groove.

5. A powder metallurgy mold according to claim 4, characterized in that: A plurality of symmetrically distributed supporting blocks are fixedly arranged between the concave mold and the base.

6. A powder metallurgy mold according to claim 5, characterized in that: The upper sides of the limit blocks are processed into inclined surfaces.

7. A powder metallurgy mold according to claim 6, characterized in that: A long groove is provided on the lower side of each vertical groove, and a baffle matching the long groove is fixedly provided on the lower side of each L-shaped plate.

8. A powder metallurgy mold according to claim 7, characterized in that: A material receiving plate matching the die is fixedly provided on the front side of the support frame.

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