Powder metallurgy part pressing forming device

Abstract

The invention discloses a powder metallurgy part pressing forming device which comprises a circulating feeding mechanism, a pressing mechanism, a secondary processing mechanism and an intermittent discharging mechanism, the circulating feeding mechanism comprises a motor, and a lower pressing head assembly is arranged on one side of a filtering assembly. According to the powder metallurgy part pressing forming device, a motor drives a rotating shaft to drive a material box to rotate, in the rotating process of the material box, two sets of brush plates on the side face of the material box sweep and gather powder accidentally falling out in the moving process of the material box and powder falling in the pressing forming process in sequence, and when the material box and the brush plates rotate to the position above a filtering assembly, the filtering assembly can filter the powder. The powder gathered by the brush plate automatically falls through the filter assembly and is uniformly recycled, so that secondary use is realized, the powder is prevented from remaining on the workbench, the powder is prevented from being moved and mixed with new powder in the subsequent feeding process, and the production consistency and the processing quality of powder metallurgy parts are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of powder metallurgy part processing, and specifically to a powder metallurgy part pressing and forming device. Background Art

[0002] Powder metallurgy is a process technology for producing metal powders or using mixtures of metal powders and non-metal powders as raw materials, and manufacturing metal materials, composite materials, and various types of products through pressing and sintering. After retrieval, it is found that a typical powder metallurgy part pressing and forming device in the prior art is, for example, a powder metallurgy part pressing and forming machine with the publication number CN114273654A. This powder metallurgy part pressing and forming machine includes a frame with a workbench plate, an avoidance driving mechanism, and a layered pre-pressing device located above the workbench plate. An upper pressing head assembly and a lower ejector rod assembly are installed on the frame; the second driving assembly can drive the second pressing head to be embedded into the powder metallurgy part forming cavity of the pressing and forming die from top to bottom. Its main feature is that pre-pressing the powder using the layered pre-pressing device not only reduces the moving stroke of the pressing head but also increases the moving speed of the pressing head, thereby improving the processing efficiency.

[0003] During the feeding process of the existing powder metallurgy part pressing and forming machine, the remaining material on the workbench cannot be synchronously processed, resulting in waste of resources and environmental pollution in the workplace. Moreover, the powder remaining on the workbench for a long time is likely to be mixed with the new metal powder during the feeding process and be moved to the pressing head assembly for pressing, so that the powder metallurgy part is likely to be affected by different humidity or other factors of the new and old powders, affecting the consistency and quality of the product. To address the above problems, the existing equipment needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a powder metallurgy part pressing and forming device to solve the problems in the above background art that during the feeding process of the existing powder metallurgy part pressing and forming machine, the remaining material on the workbench cannot be synchronously processed, resulting in waste of resources and environmental pollution in the workplace, and the powder remaining on the workbench for a long time is likely to be mixed with the new metal powder during the feeding process and be moved to the pressing head assembly for pressing, so that the powder metallurgy part is likely to be affected by different humidity or other factors of the new and old powders, affecting the consistency and quality of the product.

[0005] To achieve the above object, the present invention provides the following technical solution: A powder metallurgy part pressing and forming device, including a circulating feeding mechanism, a pressing mechanism, a secondary treatment mechanism and an intermittent discharging mechanism. The circulating feeding mechanism includes a motor, and the output end of the motor is fixedly connected to the bottom end of a rotating shaft. A material box is fixedly connected to the side of the rotating shaft, and a filter screen is fixedly connected to the inner bottom of the material box. A brush plate is fixedly connected to the bottom of the side of the material box, and the material box is arranged on the top of the machine table. A filter screen for filtering powder is fixedly connected to the inner bottom of the material box. A filtering component is arranged on the top of the machine table, and a lower pressing head component is arranged on one side of the filtering component. At the same time, both the filtering component and the lower pressing head component are arranged around the outside of the rotating shaft, and both the filtering component and the lower pressing head component are within the cleaning range of the brush plate. The pressing mechanism includes an upper pressing head component, a lifting plate, a fixing plate, a top plate, a hydraulic cylinder and a hydraulic ejecting component. The upper pressing head component is installed at the bottom of the lifting plate. The top of the lifting plate is connected to the bottom end of the hydraulic cylinder, and the hydraulic cylinder is installed on the top of the top plate. At the same time, the bottom of the top plate is connected to the fixing plate. The upper pressing head component and the lower pressing head component are arranged opposite to each other up and down. A hydraulic ejecting component is arranged below the lower pressing head component, and the hydraulic ejecting component is installed inside the machine table.

[0006] Preferably, the inner bottom of the material box is inclined, and a top rod is connected to the top of the material box. A plurality of feeding ports are arranged in an annular array on the top of the material box and outside the top rod, and a protective cover is arranged outside the feeding ports.

[0007] Preferably, a protective pad is bonded to the side of the material box, and a filter screen is fixedly connected to the inner bottom of the material box. The protective pad is arranged above the brush plate, and both the brush plate and the protective pad are symmetrically arranged on the outer walls of both sides of the material box. The filtering component includes a first filter plate and a second filter plate, and the first filter plate and the second filter plate are symmetrically distributed on the top of the machine table.

[0008] Preferably, a warning light is installed on the front side of the machine table, and a control box and a control panel are fixedly installed on the right side of the machine table. At the same time, the control box is arranged below the control panel.

[0009] Preferably, a surplus material collecting mechanism is arranged below the filtering component, and the surplus material collecting mechanism includes a collecting box. A handle groove is opened on one side wall of the collecting box, and an adjusting handle is rotatably connected in the handle groove. At the same time, a rotating groove is opened in the handle groove. A locking rod is connected to the adjusting handle, and the locking rod is arranged inside the rotating groove. The inside of the collecting box is inclined, and the collecting box is slidably connected inside the machine table.

[0010] Preferably, a telescopic cam is arranged on one side of the collecting box, and the telescopic cam penetrates through the rotating shaft. The telescopic cam includes a fixed part, a telescopic part and a reset spring group, and the fixed part is connected to the telescopic part through the reset spring group. At the same time, the fixed part is connected to the rotating shaft.

[0011] Preferably, the pressing mechanism further includes guide rods and sliding sleeves. Four groups of guide rods are symmetrically arranged. The guide rods are slidably connected with the sliding sleeves, and the sliding sleeves penetrate through the inside of the lifting plate. At the same time, the guide rods are arranged outside the lower pressing head assembly.

[0012] Preferably, the secondary treatment mechanism includes air bags, a shunt box and air blowing ports. The air bags are arranged between the lifting plates on both sides of the hydraulic cylinder and the fixed plates. The air bags are connected to the shunt box through pipelines, and air blowing ports are formed at the bottom of the shunt box.

[0013] Preferably, the intermittent discharging mechanism includes a retaining seat. The front side of the retaining seat is fixedly connected with one end of a support plate, and the other end of the support plate is fixedly connected with the inner wall of the material box. At the same time, a material cover is snap-fitted to the top of the material box. A discharge port is formed at the bottom of the material box, and the material box is arranged outside the retaining seat. A frame is arranged on one side of the material box, and the frame is fixedly connected with the material box. A lifting column is arranged below the retaining seat. The top end of the lifting column is fixedly connected with a telescopic spring group. At the same time, the lifting column is slidably connected inside the discharge port. A protective cover is arranged outside the telescopic spring group, and the top end of the telescopic spring group is fixedly connected with the bottom of the retaining seat.

[0014] Preferably, the diameter of the top of the lifting column is larger than the diameter of the bottom of the lifting column, and the diameter of the lifting column decreases from top to bottom. The lifting column is correspondingly arranged with a top rod, and the top of the top rod is inclined with both sides low and the middle high.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: For this powder metallurgy part pressing and forming device,

[0016] (1) Through the circulating feeding mechanism of the present invention, it can effectively solve the problems that the existing powder metallurgy part pressing and forming machine cannot synchronously process the remaining materials on the workbench during the feeding process, resulting in waste of resources and environmental pollution of the work environment, and the powder remaining on the workbench for a long time is easy to be mixed with new metal powder during the feeding process and is moved to the pressing head assembly for pressing, so that the powder metallurgy parts are easily affected by different humidity or other factors of the old and new powders, affecting the consistency and quality of the products. The motor drives the rotating shaft to drive the material box to rotate. During the rotation of the material box, the two brush plates on its side successively sweep and gather the powder that accidentally falls out during the movement of the material box and the powder that falls during the pressing and forming process. When the material box and the brush plates rotate above the filtering assembly, the powder gathered by the brush plates will automatically fall through the filtering assembly and be recycled uniformly for secondary use, so as to prevent the powder from remaining on the workbench, and further avoid being moved and mixed with new powder during the subsequent feeding process, and thus ensure the consistency and processing quality of the production of powder metallurgy parts;

[0017] (2) The present invention can effectively solve the problem through the combined use of a pressing mechanism, a protective pad, and a secondary treatment mechanism. After the workpiece is pressed and formed by the existing pressing and forming device, it is necessary to manually clean the small amount of powder remaining on its surface. During the cleaning process, attention needs to be paid to the force to avoid deformation of the workpiece, and the operation is rather troublesome. During the process of the material box rotating and feeding under the drive of the motor, the workpiece that has been pressed and formed and ejected from the lower pressing head assembly is synchronously pushed between the shunt box and the filtering assembly. In addition, during the process of the airbag pressing the newly added metal powder by the pressing mechanism, the gas will be discharged through the air blowing port at the bottom of the shunt box, and the small amount of powder remaining on the workpiece will be blown and cleaned from top to bottom. Compared with manual cleaning, the cleaning efficiency is higher and the workpiece will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Isometric view of a powder metallurgy part pressing and forming device of the present invention;

[0019] Figure 2 Overall structural schematic diagram of the positional relationship of the filtering assembly, rotating shaft, and lower pressing head assembly of a powder metallurgy part pressing and forming device of the present invention on the machine table;

[0020] Figure 3 Overall sectional structural schematic diagram of the connection relationship between the protective cover, material discharge port, ejector rod, intermittent discharging mechanism, material box, and material cover of a powder metallurgy part pressing and forming device of the present invention;

[0021] Figure 4 Sectional structural schematic diagram of a powder metallurgy part pressing and forming device of the present invention;

[0022] Figure 5 Exploded structural schematic diagram of the intermittent discharging mechanism of a powder metallurgy part pressing and forming device of the present invention;

[0023] Figure 6 Overall structural schematic diagram of the pressing mechanism of a powder metallurgy part pressing and forming device of the present invention;

[0024] Figure 7 Overall structural schematic diagram of the surplus material collection mechanism of a powder metallurgy part pressing and forming device of the present invention;

[0025] Figure 8 Overall structural schematic diagram of the first filter plate of a powder metallurgy part pressing and forming device of the present invention.

[0026] In the figure: 1. Recycling feeding mechanism; 101. Motor; 102. Rotating shaft; 103. Material box; 104. Filter screen; 105. Machine platform; 106. Filter component; 1061. First filter plate; 1062. Second filter plate; 107. Protective pad; 108. Brush plate; 2. Pressing head component; 3. Pressing mechanism; 301. Upper pressing head component; 302. Lifting plate; 303. Fixed plate; 304. Top plate; 305. Hydraulic cylinder; 306. Guide rod; 307. Sliding sleeve; 308. Hydraulic ejecting component; 4. Secondary treatment mechanism; 401. Airbag; 402. Shunt box; 403. Air blowing port; 5. Protective cover; 6. Feeding port; 7. Ejector rod; 8. Intermittent discharging mechanism; 801. Block seat; 802. Support plate; 803. Telescopic spring group; 804. Elastic protective net; 805. Lifting column; 9. Material bin; 10. Material cover; 11. Frame; 12. Remaining material collection mechanism; 1201. Collection box; 1202. Handle groove; 1203. Adjusting handle; 1204. Locking rod; 1205. Rotating groove; 13. Control chassis; 14. Warning lamp; 15. Control panel. Detailed implementation manners

[0027] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figure 1-8, the present invention provides a technical solution: a powder metallurgy part pressing and forming device, including a circulating feeding mechanism 1, a pressing mechanism 3, a secondary treatment mechanism 4 and an intermittent discharging mechanism 8. The circulating feeding mechanism 1 includes a motor 101, and the output end of the motor 101 is fixedly connected to the bottom end of a rotating shaft 102. A material box 103 is fixedly connected to the side of the rotating shaft 102. A brush plate 108 is fixedly connected to the bottom of the side of the material box 103. And the material box 103 is arranged on the top of a machine table 105. A circular magnet is arranged at the bottom of the material box 103. A filter screen 104 for filtering powder is fixedly connected to the inner bottom of the material box 103. The filter screen 104 is arranged on one side of the circular magnet. A filtering component 106 is arranged on the top of the machine table 105. A lower pressing head component 2 is arranged on one side of the filtering component 106. Both the filtering component 106 and the lower pressing head component 2 are arranged around the outside of the rotating shaft 102, and both the filtering component 106 and the lower pressing head component 2 are within the cleaning range of the brush plate 108. In addition, a limiting frame is arranged on the top of the machine table 105. The pressing mechanism 3 includes an upper pressing head component 301, a lifting plate 302, a fixing plate 303, a top plate 304, a hydraulic cylinder 305 and a hydraulic ejecting component 308. And the upper pressing head component 301 is installed at the bottom of the lifting plate 302. The top of the lifting plate 302 is connected to the bottom end of the hydraulic cylinder 305. And the hydraulic cylinder 305 is installed on the top of the top plate 304. At the same time, the bottom of the top plate 304 is connected to the fixing plate 303. The upper pressing head component 301 and the lower pressing head component 2 are arranged opposite to each other up and down. And a hydraulic ejecting component 308 is arranged below the lower pressing head component 2. At the same time, the hydraulic ejecting component 308 is installed inside the machine table 105. During operation, first, connect the power supply and start the motor 101 to drive the rotating shaft 102 to drive the material box 103 to rotate along the inner wall of the limiting frame. When the material box 103 rotates to the top of the lower pressing head component 2, the powder inside it is filtered by the filter screen 104 at the bottom and then discharged into the lower pressing head component 2. Then, the telescopic end of the hydraulic ejecting component 308 pushes the lifting plate 302 and the upper pressing head component 301 at the bottom to move downwards to press the powder discharged from the bottom of the material box 103 into the lower pressing head component 2. After the pressing is completed, the hydraulic ejecting component 308 pushes the powder metallurgy part in the lower pressing head component 2 to move upwards, thereby realizing the pressing and forming operation. It should be noted that both the lower pressing head component 2 and the upper pressing head component 301 are installed and fixed by bolts. And the hydraulic ejecting component 308 is composed of a hydraulic push rod and an ejecting block, that is, the hydraulic push rod pushes the ejecting block to move upwards to eject the powder metallurgy part formed by pressing in the lower pressing head component 2. On the other hand, during the rotation of the material box 103, the two brush plates 108 on its side successively sweep and gather the powder on the moving path of the material box 103 and the powder splashed during the pressing and forming process. When the material box 103 and the brush plate 108 rotate above the filtering component 106, the powder gathered by the brush plate 108 will automatically fall through the filtering component 106 and be recycled uniformly, thereby avoiding the mixing of new and old powder and affecting the quality of the workpiece. When the brush plate 108 rotates and sweeps, it contacts the inner wall of the limiting frame, and the limiting frame plays a role in restricting the extrusion and overflow range of the powder.When avoiding the powder remaining on the top of the machine table 105 from moving outward beyond the cleaning range due to the rotational force during the rotation and cleaning of the brush plate 108 to ensure the cleaning quality, it should be noted that the height dimension of the limit frame is smaller than the length dimension of the upper pressure head assembly 301, meeting the requirement of its cooperation with the lower pressure head assembly 2 for pressing the workpiece, thereby ensuring the normal progress of the forming work.

[0029] The inner bottom of the material box 103 is inclined, and a push rod 7 is connected to the top of the material box 103. A plurality of material discharge openings 6 are arranged in an annular array on the top of the material box 103 and outside the push rod 7, and a protective cover 5 is arranged outside the material discharge openings 6. During the process of adding powder through the material discharge openings 6 of the existing material box 103, the powder is likely to spill to other positions, resulting in waste of resources. During operation, the powder enters the interior of the material box 103 through the material discharge openings 6, and the protective cover 5 plays a role in blocking, preventing the powder from falling outside the material box 103 when passing through the material discharge openings 6, thereby avoiding waste of resources and improving the structural rationality of the device.

[0030] A protective pad 107 is adhesively bonded to the side of the material box 103. The protective pad 107 is arranged above the brush plate 108, and both the brush plate 108 and the protective pad 107 are symmetrically arranged on the outer walls on both sides of the material box 103. The filtering component 106 includes a first filter plate 1061 and a second filter plate 1062, and the first filter plate 1061 and the second filter plate 1062 are symmetrically distributed on the top of the machine table 105. In the existing pressing and forming device, during the feeding process, the feeding component is used to push the pressed and formed workpiece to one side. At the same time, in order to ensure the uniformity of feeding, the feeding component will swing back and forth during feeding, so that the powder inside it evenly falls into the mold. However, continuously swinging and pushing the workpiece is likely to damage the workpiece. The protective pad 107 prevents the workpiece from directly contacting its side wall when the material box 103 pushes the material. At the same time, the flexible protective pad 107 can deform when contacting the workpiece to provide a buffer space for the workpiece, thereby reducing the damage caused by frequent swinging to the workpiece, further avoiding leaving scratches on the outer surface of the workpiece. At the same time, in order to improve the efficiency of pressing and forming, the material box 103 performs one-time rotational feeding, which means that the material box 103 can rotate 180° in both positive and negative directions alternately to push the pressed and formed workpiece to the top of the first filter plate 1061 or the second filter plate 1062, that is, by shortening the moving distance of the material box 103 to improve the feeding efficiency of the device. It should be noted that the thickness of the protective pad 107 is greater than the thickness of the brush plate 108. As shown in the attachment Figure 4 shown, so as to prevent the brush plate 108 from contacting the workpiece when pushing the workpiece, and further avoid the workpiece being damaged by collision with the brush plate 108.

[0031] A warning light 14 is installed on the front side of the machine 105, and a control chassis 13 and a control panel 15 are fixedly installed on the right side of the machine 105. At the same time, the control chassis 13 is arranged below the control panel 15. When the press-forming machine performs the press-forming operation, it is easy to have the problem that the pressing component accidentally injures the worker's hand. To avoid this problem, this device is provided with a warning light 14. The warning light 14 automatically lights up when the device performs the press-forming work, and thus realizes the indication to the worker to avoid accidental injury due to his reaction being too late or misjudgment. At the same time, the worker can operate the control panel 15 to adjust and set the pressing force and pressing duration of the workpiece by the control chassis 13.

[0032] A waste material collection mechanism 12 is arranged below the filtering component 106. The waste material collection mechanism 12 includes a collection box 1201. A handle groove 1202 is formed on one side wall of the collection box 1201. An adjusting handle 1203 is rotatably connected in the handle groove 1202. At the same time, a rotating groove 1205 is formed in the handle groove 1202. A locking rod 1204 is connected to the adjusting handle 1203, and the locking rod 1204 is arranged inside the rotating groove 1205. The inside of the collection box 1201 is inclined, and the collection box 1201 is slidably connected inside the machine 105. In order to recycle the swept powder and prevent waste of resources, the collection box 1201 is provided. The collection box 1201 collects and stores the powder that falls through the first filter plate 1061 or the second filter plate 1062. When the collection and storage are saturated, the worker can manually rotate the adjusting handle 1203 so that the locking rod 1204 rotates 180° to end the engagement with the machine 105, and then the collection box 1201 can be pulled out of the machine 105, and then the powder stored inside it can be used for reprocessing and secondary utilization.

[0033] A telescopic cam is arranged on one side of the collection box 1201, and the telescopic cam penetrates through the rotating shaft 102. The telescopic cam includes a fixed part, a telescopic part and a reset spring group, and the fixed part is connected to the telescopic part through the reset spring group. At the same time, the fixed part is connected to the rotating shaft 102. When the powder falls through the through holes on the first filter plate 1061 and the second filter plate 1062 into the collection box 1201, it can only fall at the fixed position directly below it, so it is easy to cause local accumulation of powder, which in turn affects the storage capacity. When the motor 101 drives the rotating shaft 102 to drive the material box 103 to rotate, the telescopic cam on the rotating shaft 102 rotates synchronously. When the telescopic part of the telescopic cam rotates to collide with the side wall of the collection box 1201, the whole collection box 1201 will vibrate due to the impact, so as to promote the dispersion of the powder in the collection box 1201 and avoid local accumulation and blockage of the first filter plate 1061 or the second filter plate 1062, affecting the storage capacity of the collection box 1201. After the collision, the telescopic cam will squeeze the reset spring group under the drive of the rotating shaft 102 and thus continue to rotate with the rotating shaft 102.

[0034] The pressing mechanism 3 further includes guide rods 306 and sliding sleeves 307. Four groups of guide rods 306 are symmetrically arranged. The sliding sleeves 307 are slidably connected to the guide rods 306, and the sliding sleeves 307 are disposed through the inside of the lifting plate 302. At the same time, the guide rods 306 are arranged outside the lower pressing head assembly 2. During the downward pressing process of the lifting plate 302, the upper pressing head assembly 301 is prone to offset and dislocation, which will affect the pressing quality of the product. At the same time, it will cause the upper pressing head assembly 301 to fail to reset normally. The four groups of symmetrically distributed guide rods 306 play an auxiliary supporting and limiting role when the lifting plate 302 drives the sliding sleeves 307 to move up and down, avoiding the influence of the offset position of the lifting plate 302 on the pressing quality of the upper pressing head assembly 301 installed at its bottom.

[0035] The secondary treatment mechanism 4 includes an airbag 401, a flow dividing box 402 and a blowing port 403. The airbag 401 is disposed between the lifting plate 302 and the fixed plate 303 on both sides of the hydraulic cylinder 305. The airbag 401 is connected to the flow dividing box 402 through a pipeline, and the bottom of the flow dividing box 402 is provided with a blowing port 403. Usually, a small amount of powder will remain on the surface of the workpiece after pressing, that is, the powder metallurgy part. These powders will form burrs during firing, which will affect the product quality. Therefore, it needs to be cleaned. The airbag 401 installed on the top of the lifting plate 302 will be squeezed when the hydraulic cylinder 305 moves up and resets. After being pressed, the air flow inside the airbag 401 enters the flow dividing box 402 through the pipeline and is discharged through the blowing port 403 at the bottom to blow the workpieces located on the first filter plate 1061 and the second filter plate 1062, so as to ensure the product quality of the workpieces. Then, the staff can transfer the workpieces after blowing and dust removal to the relevant area for storage.

[0036] The intermittent discharging mechanism 8 includes a retaining seat 801. The front side of the retaining seat 801 is fixedly connected to one end of a support plate 802, and the other end of the support plate 802 is fixedly connected to the inner wall of the material box 9. At the same time, a material cover 10 is snap-connected to the top of the material box 9. A discharge port is opened at the bottom of the material box 9, and the material box 9 is arranged outside the retaining seat 801. A frame 11 is arranged on one side of the material box 9 and is fixedly connected to the material box 9. A lifting column 805 is arranged below the retaining seat 801, and a telescopic spring group 803 is fixedly connected to the top end of the lifting column 805. At the same time, the lifting column 805 is slidably connected inside the discharge port. An elastic protective net 804 is arranged outside the telescopic spring group 803, and the top end of the telescopic spring group 803 is fixedly connected to the bottom of the retaining seat 801. When the powder inside the material box 103 needs to be added, and to avoid the feeding operation affecting the normal pressing work, the staff can operate the control panel 15 to control the motor 101, drive the rotating shaft 102 to drive the material box 103 to rotate in a rotation direction that does not affect the pressing work, rotate the material box 103 to the top of the first filter plate 1061 or the second filter plate 1062, and move it to the lower part of the material box 9. During the rotation of the material box 103, the ejector rod 7 at its top will push the lifting column 805 to compress the telescopic spring group 803 and move upward, so that a feeding channel appears between the lifting column 805 and the discharge port at the bottom of the material box 9. Then the powder in the material box 9 will fall into the inside of the protective cover 5 through the feeding channel and enter the inside of the material box 103 through the material discharge port 6 on the inner side of the protective cover 5, thus realizing automatic feeding. After the feeding is completed, the motor 101 drives the rotating shaft 102 to drive the material box 103 to rotate away from the material box 9. Specifically, the ejector rod 7 ends the extrusion of the lifting column 805. Then the lifting column 805 will move under the action of the telescopic spring group 803 to block the discharge port. In addition, since the powder in the material box 9 will cause blockage and influence on the telescopic spring group 803 during the telescopic process, affecting automatic feeding, an elastic protective net 804 for blocking powder is installed outside it to ensure the normal telescopic movement of the telescopic spring group 803, and thus realize automatic feeding. In addition, the first filter plate 1061 and the second filter plate 1062 have the same structure and are both double-layered as shown in the appendix Figure 8As shown, a rectangular magnet is embedded and connected to the top of the upper filter plate. At the same time, the upper filter plate is rotatably connected to the lower filter plate, and the size distribution of the filter holes on the upper and lower filter plates corresponds to each other up and down. When the material box 103 rotates to the first filter plate 1061 or the second filter plate 1062, the circular magnet at the bottom of the material box 103 is magnetically connected to the rectangular magnet, so that the upper filter plate rotates following the material box 103. When rotating, the filter holes on the upper filter plate and the lower filter plate are in an interleaved occlusion state, thus preventing the materials inside the material box 103 from falling into the inside of the collection box 1201 through the filter assembly 106. Similarly, after the feeding is completed, the material box 103 rotates in the reverse direction to reset, which can drive the upper filter plate to rotate and reset to correspond to the lower filter plate up and down. At this time, the filter holes of the double-layer filter plate correspond to each other up and down. It should be noted that a slot for the rotation of the upper filter plate is provided inside the machine table 105, thereby ensuring the rotation range and the accuracy of the reset of the upper filter plate.

[0037] The diameter of the top of the lifting column 805 is larger than the diameter of the bottom of the lifting column 805, and the diameter of the lifting column 805 decreases from top to bottom. The lifting column 805 is correspondingly arranged with the top rod 7, and the top of the top rod 7 is inclined with both sides low and the middle high. The top rod 7 with an inclined top makes the height of the extrusion and upward movement of the lifting column 805 gradually increase, that is, gradually increases the size of the feeding channel between the discharge port and the lifting column 805, and the corresponding discharge amount also gradually increases. Similarly, conversely, when the discharging ends, the discharge amount also gradually decreases, so as to avoid powder spillage.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A powder metallurgy forming device, comprising a circulating feeding mechanism, a pressing mechanism, a secondary processing mechanism and an intermittent discharging mechanism, characterized in that: The circulating feeding mechanism comprises a motor, a rotating shaft, a material box, a machine, a filter assembly and a brush plate, and the output end of the motor is fixedly connected to the bottom end of the rotating shaft, the side of the rotating shaft is fixedly connected to the material box, and the inner bottom of the material box is fixedly connected to the filter screen, the side bottom of the material box is fixedly connected to the brush plate, and the material box is arranged on the top of the machine, the inner bottom of the material box is fixedly connected to the filter screen for filtering powder, the top of the machine is provided with a filter assembly, and one side of the filter assembly is provided with a lower pressure head assembly, and the filter assembly and the lower pressure head assembly are both around the outside of the rotating shaft, and the filter assembly and the lower pressure head assembly are both within the cleaning range of the brush plate, the pressing mechanism comprises an upper pressure head assembly, and the upper pressure head assembly is installed at the bottom of the lifting plate, the top of the lifting plate is connected to the bottom end of the hydraulic cylinder, and the hydraulic cylinder is installed on the top of the top plate, and the bottom of the top plate is connected with a fixed plate, the upper pressure head assembly and the lower pressure head assembly are arranged opposite to each other up and down, a hydraulic ejecting assembly is provided below the lower pressure head assembly, and the hydraulic ejecting assembly is installed inside the machine.

2. A powder metallurgy part pressing and forming device according to claim 1, characterized in that: The inner bottom of the material box is inclined, and the top of the material box is connected to a push rod. The top of the material box and outside the push rod are provided with multiple discharge ports in a circular array, and a protective cover is provided outside the discharge port.

3. The powder metallurgy part pressing and forming device according to claim 1, characterized in that: A protective pad is bonded to the side of the material box, and the protective pad is arranged above the brush plate, and the brush plate and the protective pad are symmetrically arranged on the outer walls of both sides of the material box. The filter assembly includes a first filter plate and a second filter plate, and the first filter plate and the second filter plate are symmetrically distributed on the top of the machine.

4. The powder metallurgy part pressing and forming device according to claim 1, characterized in that: A warning light is installed on the front side of the machine, and a control box and a control panel are fixedly installed on the right side of the machine, and the control box is arranged below the control panel.

5. The powder metallurgy forming device according to claim 1, characterized in that: A residual material collecting mechanism is arranged below the filter assembly, and the residual material collecting mechanism includes a collecting box, a handle groove is provided on one side wall of the collecting box, and an adjusting handle is rotatably connected in the handle groove, and a rotating groove is provided in the handle groove, a locking rod is connected to the adjusting handle, and the locking rod is arranged inside the rotating groove, the interior of the collecting box is inclined, and the collecting box is slidably connected to the inside of the machine.

6. The powder metallurgy part pressing and forming device according to claim 1, characterized in that: A telescopic cam is arranged on one side of the collection box, and the telescopic cam is arranged on the rotating shaft through the telescopic cam, the telescopic cam comprises a fixed part, a telescopic part and a reset spring group, and the fixed part is connected to the telescopic part through the reset spring group, and the fixed part is connected to the rotating shaft.

7. The powder metallurgy part pressing and forming device according to claim 1, characterized in that: The pressing mechanism also includes a guide rod and a sliding sleeve, and the guide rod is symmetrically arranged in four groups. The guide rod is slidably connected with the sliding sleeve, and the sliding sleeve is arranged inside the lifting plate. At the same time, the guide rod is arranged on the outside of the lower pressure head assembly.

8. The powder metallurgy forming device according to claim 1, characterized in that: The secondary processing mechanism includes an air bag, a diverter box and an air blowing port, and the air bag is arranged between the lifting plates and the fixed plates on both sides of the hydraulic cylinder. The air bag is connected to the diverter box through a pipeline, and an air blowing port is opened at the bottom of the diverter box.

9. The powder metallurgy part pressing and forming device according to claim 1, characterized in that: The intermittent discharging mechanism includes a baffle, and the front side of the baffle is fixedly connected to one end of the support plate, and the other end of the support plate is fixedly connected to the inner wall of the material box, and the top of the material box is snap-connected to the material cover, a discharge port is provided at the bottom of the material box, and the material box is arranged on the outside of the baffle, a frame is provided on one side of the material box, and the frame is fixedly connected to the material box, a lifting column is provided below the baffle, and the top of the lifting column is fixedly connected to a telescopic spring group, and the lifting column is slidably connected to the inside of the discharge port, a protective cover is provided on the outside of the telescopic spring group, and the top of the telescopic spring group is fixedly connected to the bottom of the baffle.

10. A powder metallurgy part pressing and forming device according to claim 9, characterized in that: The top diameter of the lifting column is larger than the bottom diameter of the lifting column, and the diameter of the lifting column decreases from top to bottom. The lifting column is arranged correspondingly to the top rod, and the top of the top rod is inclined with low sides and high middle.

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