Positioning mechanism of powder metallurgy device

Abstract

The invention discloses a positioning mechanism of a powder metallurgy device, and belongs to the technical field of powder metallurgy, the positioning mechanism comprises a workbench, an impact part is arranged inside and outside the workbench, the impact part comprises a movable sleeve fixedly connected to the outer side of an extrusion column, and guide rods are fixedly connected to the left and right sides of the upper end of a horizontal part of the workbench; the movable sleeve is arranged on the outer side of the guide rod in a sleeving mode, fixed rods are fixedly connected to the left side and the right side of the lower end of the movable sleeve, first magnetic blocks are fixedly connected to the lower sides of the fixed rods, and first moving grooves are formed in the left side and the right side of the upper end of the horizontal part of the workbench. Due to the fact that the multiple impact blocks impact the mold in order, the powder in the mold becomes denser after being impacted, and the denser powder materials can form more uniform particle distribution during dry pressing, so that surface defects are reduced, and the quality of the powder after dry pressing is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of powder metallurgy, and more specifically, to a positioning mechanism for a powder metallurgy device. Background Art

[0002] Powder metallurgy devices mainly involve a series of equipment in the powder metallurgy process. Powder metallurgy is a process technology that uses metal powders (or mixtures of metal powders and non-metal powders) as raw materials to manufacture metal materials, composite materials, and various types of products through processes such as forming and sintering. It has a wide range of applications in modern industry, covering multiple key industries such as automotive, aerospace, consumer electronics, machinery manufacturing, and medical devices.

[0003] The positioning mechanism of powder metallurgy plays a crucial role in the powder metallurgy manufacturing process. During the sintering process, products may collide with each other, resulting in surface damage or shape changes. This helps to improve the yield rate of the products obtained by sintering and reduce the cost of waste products and rework. The use of a powder metallurgy positioning mechanism can also improve production efficiency. Through automated and mechanized operation methods, the arrangement and positioning of products can be quickly completed, reducing manual intervention and waiting time. In the plastic step, the positioning mechanism is used in the dry pressing machine used for dry pressing forming. In the prior art, after the dry pressing machine positions the mold through the positioning mechanism, although the stability of the mold during powder forming can be ensured to ensure the smooth operation of the forming process, there are still many gaps between the powder materials after the powder is poured into the mold, making the powder not dense enough. As a result, the formed blank is prone to small cracks or small holes, affecting the quality of the blank. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a positioning mechanism for a powder metallurgy device.

[0005] To solve the above problems, the present invention adopts the following technical solutions, which can achieve orderly impact on the mold by multiple impact blocks, making the powder inside the mold denser after being impacted. The densified powder material can form a more uniform particle distribution during dry pressing to reduce surface defects.

[0006] A positioning mechanism for a powder metallurgy device includes a workbench and a hydraulic device arranged inside the vertical part of the workbench. The telescopic end of the hydraulic device is fixedly connected with an extrusion column. A mold is inserted on the upper side of the horizontal part of the workbench. The lower side of the mold is in extrusion contact with a chassis. An impact component is jointly arranged inside and outside the workbench. The impact component includes a movable sleeve fixedly connected to the outside of the extrusion column. On the upper ends of the left and right sides of the horizontal part of the workbench, guide rods are fixedly connected. The movable sleeve is sleeved on the outside of the guide rods. On the left and right sides of the lower end of the movable sleeve, fixing rods are fixedly connected. The fixing rods are located between the two movable sleeves. A first magnetic block is fixedly connected to the lower side of the fixing rods. On the upper ends of the left and right sides of the horizontal part of the workbench, first moving grooves are respectively formed. On the upper ends of the left and right sides of the inner part of the horizontal part of the workbench, first movable grooves are longitudinally and linearly arranged in an array. An impact block is slidably connected inside the first movable grooves.

[0007] Further, after the fixing rod moves downward, it is slidably connected in the first moving groove. On one side of the impact block close to the first moving groove, a second magnetic block is fixedly connected. After the other side of the impact block moves, it is in pressing contact with the outside of the mold. On one side of the impact block close to the first moving groove, a first pressure spring is fixedly connected. The other end of the first pressure spring is fixedly connected to one side of the first movable groove close to the first moving groove inside.

[0008] Further, the vertical part of the workbench is in an inverted "L" shape. The opposite surfaces of the first magnetic block and the second magnetic block attract each other magnetically. After the extrusion column moves downward, it is inserted into the mold. The shape of the outer side of the lower part of the extrusion column is adapted to the shape inside the mold.

[0009] Further, a positioning component is provided jointly on the inner and outer sides of the horizontal part of the workbench. The positioning component includes an installation groove formed on the upper side of the horizontal part of the workbench. Inside the installation groove, notches are arranged in an annular array. On the inner side wall of the installation groove, locking plates are hinged in an annular array. On the side of the locking plate close to the mold, anti-slip lines are provided. On the outside of the mold, docking grooves are arranged in an annular array.

[0010] Further, both the locking plate and the docking groove are in an "L" shape. The shape of the locking plate is adapted to the shape of the docking groove. After the locking plate is flipped, it is slidably connected in the notch.

[0011] Further, a material discharging component is provided inside the horizontal part of the workbench. The material discharging component includes a second moving groove formed on the lower side inside the horizontal part of the workbench.

[0012] Further, a moving bracket is slidably connected inside the second moving groove. The upper half of the moving bracket is slidably connected in the first moving groove. A piston chamber is formed on the upper side inside the second moving groove. At the center of the upper end of the moving bracket, a piston rod is fixedly connected. The piston rod is slidably connected inside the piston chamber. On the left and right sides of the lower end of the moving bracket, second pressure springs are fixedly connected. The bottom ends of the second pressure springs are fixedly connected to the lower side inside the second moving groove.

[0013] Furthermore, a positioning groove is formed through the center of the upper end of the chassis, a tray is inserted into the positioning groove, the positioning groove is communicated with the piston cavity, and the inner diameter of the mold is smaller than the diameter of the tray.

[0014] Furthermore, a cleaning component is provided on both the inner and outer sides of the workbench, and the cleaning component includes a second movable groove opened on the right side inside the workbench.

[0015] Furthermore, a pressure sensor is provided on the inner right side of the second movable groove, a tension spring is fixedly connected to the inner left side of the second movable groove, the other end of the tension spring is fixedly connected to a third magnetic block, the third magnetic block is squeezed and contacted with the pressure sensor after movement, and the opposite surfaces of the first magnetic block and the second magnetic block are magnetically repelled, the left and right sides of the lower end of the movable sleeve are fixedly connected with electric push rods, and the telescopic ends of the left and right corresponding electric push rods are commonly fixedly connected with cleaning rings, and the cleaning ring is slidably contacted with the wide mouth entrance of the mold after moving downward, and a controller is provided on the front side of the horizontal part of the workbench, and the pressure sensor, the electric push rod and the controller are all linearly connected to an external power supply.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The impact blocks of the present invention are arranged to impact the outer wall of the mold in an orderly manner, so that the powder inside the mold becomes more compact. Since multiple impact blocks impact the mold in an orderly manner, the powder inside the mold becomes more compact after being impacted. The compacted powder material can form a more uniform particle distribution during dry pressing, thereby reducing surface defects and ensuring the quality of the powder after dry pressing.

[0017] (2) The present invention uses a locking plate to squeeze the mold and press the chassis after it contacts the mold, thereby ensuring the stability of the mold during the dry pressing of powder. After the mold is inserted into the installation groove, multiple locking plates will flip over at the same time and squeeze the mold. After the locking plate and the mold are kept horizontal, the horizontal part of the locking plate will press the chassis, thereby ensuring the stability of the mold and the chassis inside the installation groove. At the same time, the mold can also be quickly withdrawn from the installation groove.

[0018] (3) The present invention pushes the tray and the workpiece by squeezing the gas inside the piston chamber after the extrusion column is separated from the mold through the piston rod. After the movable bracket is squeezed, the piston rod adjusts the pressure inside the piston chamber, so that the tray and the positioning groove fit tightly to ensure the stability of the powder above the tray when it is dry-pressed. When the movable bracket loses the pressure, the gas can be used to push the workpiece, so that the workpiece can be quickly taken out from the mold, thereby improving the processing efficiency of the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 Schematic cross-sectional structure diagram of the present invention; Figure 3 Partially enlarged schematic diagram of the workbench of the present invention; Figure 4 Partially enlarged schematic diagram of the first movable groove of the present invention; Figure 5 Front view cross-sectional structure diagram of the second moving groove of the present invention; Figure 6 Schematic structure diagram of the moving bracket of the present invention; Figure 7 Schematic structure diagram of the docking groove of the present invention; Figure 8 Cross-sectional structure diagram of the chassis of the present invention.

[0020] Explanation of reference numerals in the figure: 1. Workbench; 11. Hydraulic device; 12. Extrusion column; 13. Mold; 14. Chassis; 2. Impact component; 21. Movable sleeve; 22. Guide rod; 23. Fixed rod; 24. First magnet; 25. First moving groove; 26. First movable groove; 27. Impact block; 28. Second magnet; 29. First pressure spring; 3. Positioning component; 31. Installation groove; 32. Notch; 33. Locking plate; 34. Anti-slip pattern; 35. Docking groove; 36. Unloading component; 361. Second moving groove; 362. Moving bracket; 363. Piston chamber; 3631. Piston rod; 364. Second pressure spring; 365. Positioning groove; 366. Tray; 37. Cleaning component; 371. Second movable groove; 372. Pressure sensor; 373. Tension spring; 374. Third magnet; 375. Electric push rod; 376. Cleaning ring; 377. Controller. Specific implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 to 8 , a positioning mechanism of a powder metallurgy device, including a workbench 1 and a hydraulic device 11 arranged inside the vertical part of the workbench 1. The telescopic end of the hydraulic device 11 is fixedly connected with an extrusion column 12. A mold 13 is inserted on the upper side of the horizontal part of the workbench 1. The lower side of the mold 13 is in extrusion contact with a chassis 14. An impact component 2 is jointly arranged inside and outside the workbench 1; The impact component 2 includes a movable sleeve 21 fixedly connected to the outside of the extrusion column 12. On the left and right sides of the upper end of the horizontal part of the workbench 1, there are guide rods 22 fixedly connected. The movable sleeve 21 is sleeved on the outside of the guide rods 22. On the left and right sides of the lower end of the movable sleeve 21, there are fixed rods 23 fixedly connected. The fixed rods 23 are located between the two movable sleeves 21. On the lower side of the fixed rods 23, there are first magnetic blocks 24 fixedly connected. On the left and right sides of the upper end of the horizontal part of the workbench 1, there are first moving grooves 25 opened. On the left and right sides of the upper end of the interior of the horizontal part of the workbench 1, there are first movable grooves 26 arranged in a longitudinal linear array. Inside the first movable grooves 26, there are impact blocks 27 slidably connected.

[0023] After the fixed rod 23 moves downward, it is slidably connected in the first moving groove 25. On the side of the impact block 27 close to the first moving groove 25, there is a second magnetic block 28 fixedly connected. After the other side of the impact block 27 moves, it is in extrusion contact with the outside of the mold 13. On the side of the impact block 27 close to the first moving groove 25, there is a first pressure spring 29 fixedly connected. The other end of the first pressure spring 29 is fixedly connected to the side of the first movable groove 26 close to the first moving groove 25.

[0024] The vertical part of the workbench 1 is in an inverted "L" shape. The opposite faces of the first magnetic block 24 and the second magnetic block 28 attract each other magnetically. After the extrusion column 12 moves downward, it is inserted into the mold 13. The shape of the outer side of the lower part of the extrusion column 12 is adapted to the shape of the inside of the mold 13.

[0025] By adopting the above technical solution, the mold 13 and the chassis 14 are assembled and installed on the upper inner side of the workbench 1, and then the powder is poured into the mold 13, and then the hydraulic press 11 is started to push the extrusion column 12 downward. When the extrusion column 12 enters the mold 13, it will dry-press the powder inside the mold 13. During the downward movement of the extrusion column 12, the movable sleeve 21 on its outer side will slide on the outer side of the guide rod 22. At the same time, the two fixed rods 23 on the lower side of the movable sleeve 21 and the first magnetic block 24 fixed under the fixed rod 23 enter the two first movable grooves 25 respectively. When the fixed rod 23 carries the first magnetic block 24 and gradually passes through multiple first movable grooves 26 from top to bottom, the first magnetic block 24 will adsorb the second magnetic block 28 inside the first movable groove 26. When the second magnetic block 28 moves toward the first magnetic block 24, During the process, the impact block 27 will be pulled and the first pressure spring 29 will be squeezed. As the first magnetic block 24 gradually moves away from the second magnetic block 28, the magnetic attraction effect between the first magnetic block 24 and the second magnetic block 28 gradually decreases. At this time, the first pressure spring 29 will quickly push the impact block 27 through its own elastic force, so that the impact block 27 quickly hits the outer wall of the mold 13 until multiple impact blocks 27 hit the mold 13 in sequence from top to bottom. After the mold 13 is hit, the powder inside the mold 13 shakes, causing the powder to become denser after the shaking. Since multiple impact blocks 27 hit the mold 13 in an orderly manner, the powder inside the mold 13 becomes denser after the impact, and the dense powder material can form a more uniform particle distribution during dry pressing to reduce surface defects, so that the quality of the powder after dry pressing is guaranteed.

[0026] like Figures 1 to 5 and Figure 7 and Figure 8 As shown, a positioning component 3 is provided on both the inner and outer sides of the horizontal portion of the workbench 1. The positioning component 3 includes a mounting groove 31 provided on the upper side of the horizontal portion of the workbench 1. Notches 32 are provided in a circular array inside the mounting groove 31. Locking plates 33 are hingedly provided on the inner side walls of the mounting groove 31 in a circular array. Anti-slip grooves 34 are provided on the side of the locking plate 33 close to the mold 13. A docking groove 35 is provided on the outer side of the mold 13 in a circular array.

[0027] The locking plate 33 and the docking groove 35 are both in an “L” shape. The shape of the locking plate 33 matches the shape of the docking groove 35 . The locking plate 33 is turned over and slidably connected in the notch 32 .

[0028] By adopting the above technical solution, the mold 13 is inserted into the interior of the installation groove 31. After the mold 13 enters the lower part of the interior of the installation groove 31, it will contact the inclined locking plate 33 and press the horizontal part of the locking plate 33. As the docking groove 35 on the outer side of the mold 13 docks with the locking plate 33, the originally inclined locking plate 33 will flip after being pressed by the mold 13, and gradually flip from the interior of the notch 32 towards the direction of the docking groove 35 until the vertical part of the locking plate 33 docks with the docking groove 35 on the outer side of the mold 13. The anti-slip lines 34 provided on the side of the locking plate 33 will increase the frictional force between the mold 13 and the locking plate 33 and restrict the mold 13, so that the mold 13 is restricted inside the installation groove 31. Since the insertion of the mold 13 into the interior of the installation groove 31 will cause multiple locking plates 33 to flip simultaneously and press the mold 13, and after the locking plate 33 and the mold 13 are level, the horizontal part of the locking plate 33 will press the chassis 14, ensuring the stability of the mold 13 and the chassis 14 inside the installation groove 31. At the same time, the mold 13 can also be quickly withdrawn from the interior of the installation groove 31.

[0029] As Figures 2 to 6 shown, a material discharging assembly 36 is provided inside the horizontal part of the workbench 1. The material discharging assembly 36 includes a second moving groove 361 opened on the lower side inside the horizontal part of the workbench 1.

[0030] A moving bracket 362 is slidably connected inside the second moving groove 361. The upper half of the moving bracket 362 is slidably connected in the first moving groove 25. A piston chamber 363 is opened on the upper side inside the second moving groove 361. A piston rod 3631 is fixedly connected to the center of the upper end of the moving bracket 362. The piston rod 3631 is slidably connected inside the piston chamber 363. Second pressure springs 364 are fixedly connected to both the left and right sides of the lower end of the moving bracket 362. The bottom ends of the second pressure springs 364 are fixedly connected to the lower side inside the second moving groove 361.

[0031] A positioning groove 365 is penetrated and opened at the center of the upper end of the chassis 14. A tray 366 is inserted into the interior of the positioning groove 365. The positioning groove 365 is communicated with the piston chamber 363. The inner diameter of the mold 13 is smaller than the diameter of the tray 366.

[0032] By adopting the above technical solution, when the fixed rod 23 drives the first magnet 24 to move downward inside the first moving slot 25, it will contact the moving bracket 362. Subsequently, as the fixed rod 23 continues to move downward, the moving bracket 362 will be squeezed downward, causing the moving bracket 362 to press the second pressure spring 364. At the same time, the piston rod 3631 at the center of the upper side of the moving bracket 362 will move downward inside the piston chamber 363. Since the positioning slot 365 communicated with the piston chamber 363 is blocked by the tray 366, and the upper part of the tray 366 is pressed by the powder, the pressure inside the piston chamber 363 is less than the external pressure. At the same time, the tray 366 and the positioning slot 365 become more tightly fitted due to the air pressure difference. When the dry pressing is completed, the hydraulic device 11 drives the extrusion column 12 to pull the fixed rod 23 upward through the movable sleeve 21. After the moving bracket 362 loses the suppression from the fixed rod 23, the second pressure spring 364 below the moving bracket 362 will push the moving bracket 362 upward through its own elastic force. Subsequently, the piston rod 3631 moves upward inside the piston chamber 363 and compresses the gas inside the piston chamber 363, causing the gas to be squeezed and move upward, and push the tray 366, so that the gas inside the piston chamber 363 is gradually released, and the pressure inside the piston chamber 363 is balanced with the outside. And the workpiece dry-pressed inside the mold 13 becomes loose from the inner wall of the mold 13. When the mold 13 is withdrawn from the installation slot 31, the worker can quickly take out the workpiece from the inside of the mold 13. Since the piston rod 3631 moves after the moving bracket 362 is squeezed, the pressure inside the piston chamber 363 changes, making the tray 366 and the positioning slot 365 tightly fitted to ensure the stability of the powder above the tray 366 during dry pressing. And when the moving bracket 362 loses the suppression, it can also push the workpiece through the gas, enabling the workpiece to be quickly taken out from the inside of the mold 13, improving the processing efficiency of the powder.

[0033] As Figures 2 to 6 shown, a cleaning component 37 is jointly provided on the inner and outer sides of the workbench 1. The cleaning component 37 includes a second moving slot 371 opened on the right side inside the workbench 1.

[0034] A pressure sensor 372 is arranged on the inner right side of the second movable slot 371. A tension spring 373 is fixedly connected to the inner left side of the second movable slot 371. The other end of the tension spring 373 is fixedly connected to a third magnetic block 374. After the third magnetic block 374 moves, it squeezes and contacts the pressure sensor 372. The opposite faces between the first magnetic block 24 and the second magnetic block 28 repel each other magnetically. Electric push rods 375 are fixedly connected to both the left and right sides at the lower end of the movable sleeve 21. The telescopic ends of the left and right corresponding electric push rods 375 are jointly fixedly connected to a cleaning ring 376. After the cleaning ring 376 moves downward, it slidably contacts the wide-mouth entrance of the mold 13. A controller 377 is arranged on the front surface of the horizontal part of the workbench 1. The pressure sensor 372, the electric push rods 375, and the controller 377 are all linearly connected to an external power supply.

[0035] By adopting the above technical solution, before the first magnetic block 24 moves to the position of the third second magnetic block 28 from top to bottom, the cleaning ring 376 pushed to the extension limit by the electric push rod 375 will first enter the wide-mouth entrance of the mold 13 to clean the residual powder remaining at the wide-mouth entrance. As the first magnetic block 24 corresponds to the third second magnetic block 28, the first magnetic block 24 on the right repels the third magnetic block 374 magnetically, causing the third magnetic block 374 to gradually move away from the first magnetic block 24, squeezing the pressure sensor 372 inside the second movable slot 371 and pulling the tension spring 373 at the same time. Meanwhile, the squeezed pressure sensor 372 sends a signal to the controller 377. Subsequently, the controller 377 starts the electric push rod 375 to pull the cleaning ring upward, causing the cleaning ring 376 to disengage from the mold 13. As the first magnetic block 24 moves away from the third magnetic block 374, the tension spring 373 pulls the third magnetic block 374 to reset the third magnetic block 374. It should be noted that the time for the controller 377 to control the electric push rod 375 to push the cleaning ring 376 downward is determined according to the material of the powder being dry-pressed. The staff pre-enter the required dry-pressing time for different powders into the controller 377. When the powder dry-pressing is completed, the controller 377 starts the electric push rod 375 to push the cleaning ring 376 back to its original position. Since the extrusion column 12 enters the mold 13 to dry-press the powder, the cleaning ring 376 can sweep the powder remaining at the wide-mouth entrance of the mold 13 into the mold 13, effectively reducing the powder loss, thereby ensuring the dry-pressing quality of the powder. At the same time, the cleaning ring 376 will disengage from the mold 13 before the extrusion column 12 dry-presses the powder to avoid the cleaning ring 376 affecting the dry-pressing efficiency of the extrusion column 12 on the powder.

[0036] Working principle: After inserting the mold 13 into the inside of the installation groove 31, the mold 13 contacts the inclined locking plate 33. As the docking groove 35 on the outer side of the mold 13 docks with the locking plate 33, the originally inclined locking plate 33 starts to flip after being squeezed by the mold 13 and gradually flips from inside the notch 32 towards the direction of the docking groove 35 until the vertical part of the locking plate 33 docks with the docking groove 35 on the outer side of the mold 13. The anti-slip lines 34 provided on the side of the locking plate 33 will increase the friction between the mold 13 and the locking plate 33 and restrict the chassis 14, so that the mold 13 is restricted inside the installation groove 31. Pour the powder into the mold 13, and then start the hydraulic actuator 11 to push the extrusion column 12 downward, so that the movable sleeve 21 on the outer side of the extrusion column 12 drives the two fixing rods 23 to move downward while sliding on the outer side of the guide rod 22. As the first magnet 24 below the fixing rod 23 enters the two first moving grooves 25, the first magnet 24 will adsorb the second magnet 28 inside the first movable groove 26, pull the impact block 27, and at the same time squeeze the first pressure spring 29. After the first magnet 24 gradually moves away from the second magnet 28, the first pressure spring 29 will quickly push the impact block 27 through its own elastic force, so that the impact block 27 quickly impacts the outer wall of the mold 13. After the mold 13 is impacted, the powder inside the mold 13 shakes, prompting the powder to be more compact after shaking. When the first magnet 24 contacts the moving bracket 362, the moving bracket 362 presses the second pressure spring 364 and makes the piston rod 3631 move downward inside the piston chamber 363. When the dry pressing is completed, the moving bracket 362 loses the pressing force from the fixing rod 23, and the second pressure spring 364 will push the moving bracket 362 upward through its own elastic force. Subsequently, the piston rod 3631 compresses the gas inside the piston chamber 363, so that the gas is squeezed and moves upward to push the tray 366, resulting in loosening between the workpiece dry-pressed inside the mold 13 and the inner wall of the mold 13. When the mold 13 is pulled out of the installation groove 31, the staff can quickly take out the workpiece from the mold 13. Before the first magnet 24 moves to the position of the third second magnet 28 from top to bottom, the cleaning ring 376 pushed to the extension limit by the electric push rod 375 will first enter the wide-mouth entrance of the mold 13 to clean the residual powder remaining at the wide-mouth entrance. As the first magnet 24 corresponds to the position of the third second magnet 28, the first magnet 24 on the right repels the third magnet 374 magnetically, so that the third magnet 374 gradually moves away from the first magnet 24, squeezes the pressure sensor 372 inside the second movable groove 371, and pulls the tension spring 373 at the same time. At the same time, the squeezed pressure sensor 372 sends a signal to the controller 377, and then the controller 377 starts the electric push rod 375 to pull the cleaning ring upward, so that the cleaning ring 376 disengages from the mold 13. As the first magnet 24 moves away from the third magnet 374,The tension spring 373 pulls the third magnetic block 374 to reset the third magnetic block 374.,

[0037] The above are only the preferred specific embodiments of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improved concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A positioning mechanism for a powder metallurgy device, comprising a workbench and a hydraulic device arranged inside a vertical portion of the workbench, wherein a telescopic end of the hydraulic device is fixedly connected to an extrusion column, a mold is inserted into the upper side of the horizontal portion of the workbench, and a chassis is extruded and contacted on the lower side of the mold, characterized in that: The working table is provided with impact components both inside and outside; The impact component includes a movable sleeve fixedly connected to the outside of the extrusion column, the left and right sides of the upper end of the horizontal part of the workbench are fixedly connected with guide rods, the movable sleeve is arranged on the outside of the guide rods, the left and right sides of the lower end of the movable sleeve are fixedly connected with fixed rods, the fixed rod is located between the two movable sleeves, the lower side of the fixed rod is fixedly connected with a first magnetic block, the left and right sides of the upper end of the horizontal part of the workbench are both provided with first movable grooves, the left and right sides of the inner upper end of the horizontal part of the workbench are both arranged in a longitudinal linear array with first movable grooves, and the inside of the first movable groove is slidably connected with an impact block; A material stripping assembly is provided inside the horizontal portion of the workbench, and the material stripping assembly includes a second moving groove opened at the lower side of the horizontal portion of the workbench; A movable bracket is slidably connected to the interior of the second movable groove, and the upper half of the movable bracket is slidably connected to the first movable groove. A piston cavity is opened on the upper side of the interior of the second movable groove, and a piston rod is fixedly connected to the center of the upper end of the movable bracket. The piston rod is slidably connected in the piston cavity. The left and right sides of the lower end of the movable bracket are fixedly connected to second pressure springs, and the bottom end of the second pressure spring is fixedly connected to the lower side of the interior of the second movable groove; A positioning groove is formed through the center of the upper end of the chassis, a tray is inserted into the positioning groove, the positioning groove is communicated with the piston cavity, and the inner diameter of the mold is smaller than the diameter of the tray.

2. The positioning mechanism of a powder metallurgy device according to claim 1, characterized in that: After the fixed rod moves downward, it is slidably connected in the first movable groove. The side of the impact block close to the first movable groove is fixedly connected with a second magnetic block. After the other side of the impact block moves, it is squeezed and contacted with the outer side of the mold. The side of the impact block close to the first movable groove is fixedly connected with a first pressure spring. The other end of the first pressure spring is fixedly connected to one side of the first movable groove close to the first movable groove.

3. The positioning mechanism of a powder metallurgy device according to claim 1, characterized in that: The vertical portion of the workbench is in an inverted "L" shape, the first magnetic block and the second magnetic block are magnetically attracted to each other between their opposite surfaces, the extrusion column is moved downward and inserted into the mold, and the shape of the outer side of the lower portion of the extrusion column is adapted to the shape inside the mold.

4. The positioning mechanism of a powder metallurgy device according to claim 1, characterized in that: A positioning component is commonly provided on the inner and outer sides of the horizontal portion of the workbench, and the positioning component includes a mounting groove opened on the upper side of the horizontal portion of the workbench, the interior of the mounting groove is provided with notches arranged in a circular array, the inner side wall of the mounting groove is hinged with a locking plate arranged in a circular array, the locking plate is provided with anti-slip grooves on the side close to the mold, and the outer side of the mold is provided with docking grooves arranged in a circular array.

5. The positioning mechanism of a powder metallurgy device according to claim 4, characterized in that: The locking plate and the docking groove are both in an "L" shape, the shape of the locking plate is adapted to the shape of the docking groove, and the locking plate is flipped over and slidably connected in the notch.

6. The positioning mechanism of a powder metallurgy device according to claim 1, characterized in that: The inner and outer sides of the workbench are jointly provided with a cleaning assembly, and the cleaning assembly comprises a second movable groove opened on the right side inside the workbench.

7. The positioning mechanism of a powder metallurgy device according to claim 6, characterized in that: A pressure sensor is provided on the right side of the interior of the second movable groove, and a tension spring is fixedly connected to the left side of the interior of the second movable groove. The other end of the tension spring is fixedly connected to a third magnetic block. After the third magnetic block moves, it is squeezed and contacted with the pressure sensor. The opposite surfaces of the first magnetic block and the second magnetic block are magnetically repelled. Electric push rods are fixedly connected to the left and right sides of the lower end of the movable sleeve. Cleaning rings are fixedly connected to the telescopic ends of the electric push rods on the left and right sides. After the cleaning ring moves downward, it slides and contacts with the wide entrance of the mold. A controller is provided on the front of the horizontal part of the workbench, and the pressure sensor, the electric push rod and the controller are all linearly connected to an external power supply.

Images