Powder metallurgy automatic mixing device

Abstract

The application relates to the powder metallurgy technical field, in particular to a powder metallurgy automatic mixing device, which comprises a feeding unit, the feeding unit comprises multiple preloading pipes, a material control unit is arranged at the lower end outlet position of each preloading pipe, the material control unit is used for intermittent feeding of materials, a mixing unit is arranged below the material control unit, the mixing unit comprises a mixing barrel and a mixing assembly arranged in the mixing barrel and used for stirring and uniformly mixing the materials; in the application, multiple preloading pipes are arranged to realize addition of multiple materials, and the material control unit is matched to realize quantitative and intermittent addition of each material; during the addition process, the mixing assembly continuously stirs the materials, compared with the existing mixing mode, the application can avoid that the mixing barrel is full of materials, and the driving of the mixing assembly is affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of powder metallurgy, and particularly relates to a powder metallurgy automatic mixing device. BACKGROUND

[0002] Powder metallurgy is an advanced material preparation technology, which uses metal powder or a mixture of metal and non-metal powder as material, and manufactures metal materials, composite materials and various types of products through forming and sintering processes; the forming process is to press the powder material into a shape through physical methods, and then to calcine the pressed blank at high temperature through a sintering process, and the sintering temperature is usually between 70% and 90% of the melting point of the powder metal, so as to ensure that the powder particles are bonded without complete melting;

[0003] Powder metallurgy generally needs to mix and press multiple materials and then sinter them, and the multiple materials need to be mixed before being pressed. At present, the mixing method for powder metallurgy materials is to put multiple materials into a mixing device at one time, and to complete the mixing through continuous stirring of the mixing device. In the above mixing method, when the amount of metal powder accounts for a large proportion, the resistance during stirring is large, and a larger power source is needed to drive the stirring. At the moment of driving the stirring device, the load on the stirring device is large, and the stirring device is easy to overload. At the same time, all the materials are put in at one time, and a longer mixing process is needed to ensure the uniformity of the mixed materials, which affects the efficiency of the mixing process.

[0004] Therefore, the present application provides a powder metallurgy automatic mixing device to solve the above problems. SUMMARY

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem in the background art.

[0006] The technical scheme adopted by the present application to solve the technical problems is:

[0007] A powder metallurgy automatic mixing device, comprising a feeding unit, a material control unit and a mixing unit;

[0008] The feeding unit for feeding materials comprises a plurality of preloaded pipes, and the lower end outlet position of each preloaded pipe is provided with the material control unit;

[0009] The material control unit for controlling the intermittent feeding of materials comprises a cover provided at the lower end of the preloaded pipe, a vertical rod rotatably connected to the edge position of the cover, and the vertical rod is rotatably connected to the cover through a torsional spring;

[0010] The mixing unit for mixing materials comprises a mixing barrel and a mixing assembly provided in the mixing barrel for stirring and mixing the materials uniformly;

[0011] The inner axis position of the mixing barrel is provided with a rotating shaft, the upper end of the rotating shaft extends upward to a cover position, and a plurality of push rods are uniformly arranged on the outer circle of the upper end of the rotating shaft, the push rods can push the force bars arranged at the eccentric position of the lower surface of each cover.

[0012] Preferably, the feeding unit comprises a top plate, a plurality of preloaded pipes are arranged in a circular array on the top plate, the upper end of the preloaded pipe is flared, the lower ends of the preloaded pipes are close to each other and are connected with a cover plate, the lower end of each preloaded pipe penetrates through the cover plate, the cover plate covers the upper end of the mixing barrel, and the lower end of the preloaded pipe is provided with a material control unit; the edge of the top plate is fixed to the mixing barrel by a plurality of support frames, a discharging port is formed at the lower end of the mixing barrel, a discharging assembly is arranged at the position of the discharging port, and the discharging assembly can control the release of the mixed material in the mixing barrel.

[0013] Preferably, each push rod is arranged in an arc shape, and the arc surface of each push rod extrudes the outer circle of the force bar.

[0014] Preferably, the mixing assembly comprises a spiral blade arranged on the outer circle of the rotating shaft; the mixing assembly further comprises a plurality of auxiliary push plates arranged close to the inner side wall of the mixing barrel, each auxiliary push plate is arranged in an arc shape and is inclined in the mixing barrel, the auxiliary push plates are divided into a plurality of groups from top to bottom, each auxiliary push plate in each group is connected to the rotating shaft by a connecting rod, and the auxiliary push plates can push the material upward and disperse it.

[0015] Preferably, the discharging assembly comprises guide rails symmetrically arranged on both sides of the discharging port, a blocking plate is arranged between the guide rails, anti-dropping rods are symmetrically arranged on both sides of the blocking plate, the anti-dropping rods are slidably arranged in the guide rails; a pulling plate is arranged at the middle position of one end of the blocking plate, a top rod is arranged on the lower surface of one end of the blocking plate, and the carriage of an external trolley is pushed on the top rod, so as to push the blocking plate to slide and open the discharging port.

[0016] Preferably, auxiliary assemblies are symmetrically arranged on the outer side of the mixing barrel, the auxiliary assemblies are used for assisting the mixing unit to mix the material, and each auxiliary assembly comprises a support leg, a driving assembly is arranged on the outer side of the upper end of the support leg, a rotating body is fixedly connected to the output end of the driving assembly, and the rotating body is fixedly connected to the outer side wall of the upper end of the mixing barrel.

[0017] An arc-shaped guide plate is arranged on the inner side of the support leg, a connecting block is slidably connected to the guide plate, and the connecting block is fixedly connected to the outer side wall of the lower end of the mixing barrel.

[0018] Preferably, the rotating shaft is in a hollow shape, a plurality of air inlet holes are formed at the position close to the motor of the rotating shaft, a hollow ring body is further rotatably connected to the rotating shaft, the hollow ring body is arranged at the position of the air inlet hole, and the hollow ring body is connected to an external air pump through a hose.

[0019] The blade of the spiral blade is hollow, and a plurality of spray heads are arranged on the side wall of the blade, the spray heads are communicated with the cavity inside the spiral blade, and the cavity is communicated with the hollow part of the rotating shaft.

[0020] Preferably, the low end of each auxiliary push plate is provided in a blade shape, and a plurality of through holes are formed in each auxiliary push plate.

[0021] Preferably, a rotating connecting sleeve is arranged on each force receiving rod; a limiting rod is arranged on one side of each cover, the limiting rod is arranged at the position where the cover is connected with the vertical rod, and the limiting rod is fixedly connected to the outer side wall of the lower end of the preloading pipe.

[0022] Preferably, a plurality of air release holes are formed in the cover plate, and a filter screen is arranged at the position of the air release hole.

[0023] The present application has the advantages that:

[0024] 1. The present application realizes the addition of multiple materials by arranging multiple preloading pipes, and realizes the quantitative and intermittent addition of each material by cooperating with the material control unit. During the addition process, the mixing assembly continuously mixes the materials. Compared with the existing mixing method, firstly, it can avoid filling the mixing barrel with materials, which affects the driving of the mixing assembly, and also can reduce the resistance of metal materials to the mixing assembly, reduce the wear of the mixing assembly itself, and prolong the service life of the mixing assembly. Secondly, the quantitative and intermittent addition of each material makes the mixing time shorter, which can improve the mixing efficiency.

[0025] 2. The mixing assembly arranged in the present application realizes the mixing of multiple materials by stirring. When the materials quantitatively fall into the mixing barrel, the spiral blade rotates to extrude the upper layer of materials to the lower layer until the materials are extruded into the inside of the mixing barrel. Then the materials extrude each other at the bottom of the mixing barrel and flow to the eccentric position of the bottom of the mixing barrel. At the same time, the rotation of the multiple auxiliary push plates scrapes the materials at the bottom of the mixing barrel and pulls them up to the upper layer of the materials, so that the materials form a closed loop stirring and mixing in the mixing barrel. This method can improve the material mixing efficiency and the mixing uniformity. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a first perspective view of the automatic powder metallurgy mixing device in the present application;

[0027] Figure 2 It is a second perspective view of the automatic powder metallurgy mixing device in the present application;

[0028] Figure 3 It is a perspective view of the cooperation between the mixing barrel and the supporting leg in the present application;

[0029] Figure 4 It is a perspective view of the cooperation between the preloading pipe and the mixing assembly in the present application;

[0030] Figure 5 is a perspective view of the mixing assembly in the present application;

[0031] Figure 6 is a perspective view of the cooperation between the feeding unit and the material control unit in the present application;

[0032] Figure 7 is a schematic view of the cooperation between the cover and the push rod in the present application;

[0033] Figure 8 is a schematic view of the cooperation between the motor and the rotating shaft in the present application;

[0034] Figure 9 is a perspective view of the auxiliary push plate in the present application;

[0035] Figure 10 is a perspective view of the cooperation between the spiral blade and the rotating shaft in the present application;

[0036] Figure 11 is a schematic view of the cooperation between the spiral blade and the auxiliary push plate in the present application;

[0037] Figure 12 is a first perspective view of the unloading assembly in the present application;

[0038] Figure 13 is a second perspective view of the unloading assembly in the present application;

[0039] Figure 14 is a schematic view of the cooperation between the trolley and the unloading assembly in the present application;

[0040] Figure 15 is a perspective view of the cooperation between the torsion spring and the vertical rod in the present application.

[0041] In the figure: 1, preloaded pipe; 2, mixing bucket; 3, top plate; 4, cover plate; 5, support frame; 6, motor; 7, rotating shaft; 8, push rod; 9, cover; 10, vertical rod; 11, force receiving rod; 12, spiral blade; 13, auxiliary push plate; 14, guide rail; 15, plugging plate; 16, anti-dropping rod; 17, jacking rod; 18, trolley; 20, support leg; 21, rotating body; 22, guide plate; 23, link block; 24, hollow ring body; 25, hose; 27, spray head; 28, through hole; 29, sleeve; 30, limiting rod; 31, air release hole; 32, pull plate; 33, link rod. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0043] REFERENCE Figure 1 - Figure 15A kind of powder metallurgy automatic mixing device, including feeding unit, control material unit and mixing unit;

[0044] The feeding unit for material feeding includes a plurality of preloaded tubes 1, and the lower end outlet position of each preloaded tube 1 is provided with a control material unit;

[0045] The control material unit for controlling the intermittent feeding of materials includes a cover 9 arranged at the lower end of the preloaded tube 1, and a vertical rod 10 is rotatably connected to the edge position of the cover 9.

[0046] The mixing unit for mixing materials includes a mixing barrel 2 and a mixing assembly arranged in the mixing barrel 2 for stirring and mixing materials evenly;

[0047] The shaft 7 is arranged at the axis position in the mixing barrel 2, the upper end of the shaft 7 extends upward to the position of the cover 9, and a plurality of push rods 8 are uniformly arranged on the outer circle of the upper end of the shaft 7, and the push rod 8 can act on the force rod 11 arranged at the eccentric position of the lower surface of each cover 9;

[0048] A motor 6 is arranged above the lower end of the plurality of preloaded tubes 1, the upper end of the shaft 7 is fixedly connected to the output end of the motor 6, the motor 6 drives the shaft 7 to rotate, and the shaft 7 drives the push rod 8 to rotate, as shown in Figure 7 When the push rod 8 rotates counterclockwise with the shaft 7 and contacts the force rod 11, the push rod pushes the force rod 11, and the force rod 11 drives the cover 9 to rotate around the vertical rod 10 connected thereto, at this time the lower end of the preloaded tube 1 is opened, and the material in the preloaded tube 1 falls into the mixing barrel 2, when the push rod 8 presses the force rod 11, the cover 9 rotates, and when it passes the force rod 11, the cover 9 is again blocked from the lower end of the preloaded tube 1 under the torsional force of the torsional spring connected thereto, and the material in the preloaded tube 1 is prevented from falling; and the material that has fallen into the mixing barrel 2 is mixed under the action of the mixing assembly.

[0049] The bottom of the mixing barrel 2 is provided with a discharge port, and a discharge assembly is arranged at the discharge port position, which can control the release of the mixed material in the mixing barrel 2;

[0050] In this embodiment, the powder metallurgy automatic mixing device can realize the feeding of multiple different materials at one time, and the control material unit can quantitatively and intermittently discharge the materials into the mixing barrel 2, and the mixing assembly is driven to continuously mix the materials falling into the mixing barrel 2, and then the materials are discharged through the discharge assembly;

[0051] Multiple preloaded pipes 1 realize the addition of multiple materials, and cooperate with the material control unit to realize the quantitative and intermittent addition of each material. During the addition process, the mixing assembly continuously mixes the materials. Compared with the existing mixing method, first, it can avoid filling the mixing barrel 2 with materials, which affects the driving of the mixing assembly. At the same time, it can also reduce the resistance of metal materials to the mixing assembly, reduce the wear of the mixing assembly itself, and prolong the service life of the mixing assembly. Second, the quantitative and intermittent addition of each material makes the mixing time shorter, which can improve the mixing efficiency.

[0052] With reference to Figure 1 - Figure 7 , the feeding unit includes a top plate 3, a plurality of preloaded pipes 1 are arranged in a circular array on the top plate 3, the upper end of the preloaded pipe 1 is flared, the lower end of the preloaded pipe 1 is close to each other and connected with a cover plate 4, the lower end of each preloaded pipe 1 penetrates the cover plate 4, the cover plate 4 covers the upper end of the mixing barrel 2, and the lower end of the preloaded pipe 1 is provided with a material control unit; the edge of the top plate 3 is fixedly connected to the mixing barrel 2 through a plurality of support frames 5, the lower end of the mixing barrel 2 is provided with a discharge port, and the discharge port is provided with a discharging assembly; the discharging assembly can control the release of the mixed material in the mixing barrel 2; the motor 6 is fixedly connected to the cover plate 4; the top plate 3 is arranged above the mixing barrel 2 through a plurality of support frames 5, so as to ensure the stability of the plurality of preloaded pipes 1; the lower end of each preloaded pipe 1 is close to each other and is fixedly connected to the cover plate 4, so that the cover plate 4, the plurality of preloaded pipes 1, the top plate 3 and the mixing barrel 2 are fixedly connected as a whole, so that the powder metallurgy automatic mixing device has high stability during operation; after the powder metallurgy automatic mixing is completed, the material is discharged from the discharge port at the lower end of the mixing barrel 2 through the discharging assembly.

[0053] With reference to Figure 1 - Figure 7 , each push rod 8 is arranged in an arc shape, and the arc surface of each push rod 8 extrudes the outer circle of the stress rod 11; the push rod 8 is arranged in a shape, so that the push rod 8 extrudes the stress rod 11 more smoothly, and improves the smoothness of the rotating cover 9.

[0054] With reference to Figure 1 - Figure 11The mixing assembly comprises helical blades 12 arranged on the outer ring of the rotating shaft 7; the mixing assembly further comprises a plurality of auxiliary push plates 13 arranged close to the inner side wall of the mixing barrel 2, each auxiliary push plate 13 is arranged in the mixing barrel 2 in an arc shape and is arranged in an inclined manner, the plurality of auxiliary push plates 13 are arranged in groups from top to bottom, each auxiliary push plate 13 in each group is connected to the rotating shaft 7 through a connecting rod 33, and the auxiliary push plate 13 can push and disperse the material; the mixing assembly is arranged to realize the mixing of a plurality of materials in a stirring manner, when the materials are quantitatively dropped into the mixing barrel 2, the helical blades 12 rotate to extrude the upper layer of materials to the lower layer, until the materials are extruded into the mixing barrel 2, then the materials are extruded to each other at the bottom of the mixing barrel 2 and flow to the eccentric position at the bottom of the mixing barrel 2, at the same time, the rotation of the plurality of auxiliary push plates 13 scrapes and pulls up the materials at the bottom of the mixing barrel 2 to the upper layer of the materials, so that the materials form a closed loop stirring and mixing in the mixing barrel 2, which can improve the material mixing efficiency and the mixing uniformity;

[0055] The outer side edge of the auxiliary push plate 13 is left with a gap of 0.5-1 cm with the inner side wall of the mixing barrel 2, so as to avoid the contact and scratching between the auxiliary push plate 13 and the mixing barrel 2, and to ensure that the auxiliary push plate 13 can smoothly perform the circular motion.

[0056] With reference to Figure 1 Figure 14 The discharging assembly comprises guide rails 14 arranged symmetrically on both sides of the discharge port, a blocking plate 15 is arranged between the guide rails 14, anti-dropping rods 16 are arranged symmetrically on both sides of the blocking plate 15, and the anti-dropping rods 16 are slidably arranged in the guide rails 14; a pulling plate 32 is arranged at the middle position of one end of the blocking plate 15, a top rod 17 is arranged on the lower surface of one end of the blocking plate 15, and the carriage of an external trolley 18 is arranged on the top rod 17, so as to push the blocking plate 15 to slide and open the discharge port; the opening and closing of the discharge port can be realized by the forward and backward movement of the discharging assembly and the trolley 18, and no additional equipment or power source is needed; after the trolley 18 moves forward to the discharging assembly, the front end is inclined downward, so that the front end of the carriage passes over the pulling plate 32, at this time, the end of the pulling plate 32 is arranged in the carriage, then the trolley 18 is continuously pushed, the trolley 18 extrudes the top rod 17, the top rod 17 drives the blocking plate 15 to move along the guide rail 14, at this time, the discharge port is gradually opened; during the opening of the discharge port, the blocking plate 15 moves synchronously with the trolley 18, so that the mixed materials flowing out of the discharge port can smoothly fall into the carriage; after the carriage is filled with the mixed materials, the trolley 18 is pulled to move backward, the front end of the trolley 18 is arranged on the pulling plate 32, the pulling plate 32 hooks the carriage and moves with the carriage to reset, at the same time, the pulling plate 32 drives the blocking plate 15 to reset and block the discharge port; after the blocking plate 15 is reset, the front end of the carriage is inclined downward, and the trolley 18 is pulled away from the pulling plate 32, so as to realize the loading of the trolley 18.

[0057] With reference to​Figure 1 - Figure 3 Auxiliary components are symmetrically arranged on the outside of the mixing tank 2. The auxiliary components are used to assist the mixing unit in mixing the materials. Each auxiliary component includes a support leg 20. A drive component is provided on the outer side of the upper end of the support leg 20. A rotating body 21 is fixedly connected to the output end of the drive component. The rotating body 21 is fixedly connected to the outer wall of the upper end of the mixing tank 2.

[0058] The inner side of the support leg 20 is provided with an arc-shaped guide plate 22, and a connecting block 23 is slidably connected to the guide plate 22. The connecting block 23 is fixed to the lower outer wall of the mixing tank 2. After all the material in each pre-loading tube 1 is fed into the mixing tank 2, the driving component is operated to realize the swing of the mixing tank 2. In this embodiment, the driving component can be composed of a motor and a reducer. The motor drives the reducer, the reducer drives the rotating body 21, and the rotating body 21 drives the mixing tank 2 to swing back and forth. When the mixing tank 2 swings, the material tilts to one side of the mixing tank 2. At this time, part of the mixing component is exposed inside the mixing tank 2, which can reduce the operating pressure of the mixing component. At the same time, the swing of the mixing tank 2 enables the material to achieve multi-dimensional stirring and mixing, further improving the mixing uniformity.

[0059] Reference Figure 5 - Figure 11 The rotating shaft 7 is hollow, and multiple air inlets are opened on the rotating shaft 7 near the motor 6. A hollow ring 24 is also rotatably connected to the rotating shaft 7. The hollow ring 24 is fitted at the air inlet position, and the hollow ring 24 is connected to an external air pump through a hose 25.

[0060] Reference Figure 10 The spiral blade 12 has hollow blades, and multiple nozzles 27 are provided on the sidewalls of the blades. The nozzles 27 are connected to the cavity inside the spiral blade 12, and the cavity is connected to the hollow part of the rotating shaft 7. The axis of the rotating shaft 7 is hollow. With the help of an external air pump, gas is injected into the rotating shaft 7. The gas is injected into the hollow ring 24 along the hose 25. The hollow ring 24 and the rotating shaft 7 are sealed by a rubber ring. The rotating shaft 7 and the hollow ring 24 rotate relative to each other to ensure the sealing between the rotating shaft 7 and the hollow ring 24, so that more gas can be released from the hollow ring. 24 flows into the interior of the rotating shaft 7; the gas inside the hollow ring 24 flows into the interior of the rotating shaft 7 along the air inlet on the rotating shaft 7, and flows along the interior of the rotating shaft 7 and the interior of the spiral blade 12, and then is discharged from the nozzle 27 on the spiral blade 12. When the material covers the nozzle 27, the airflow discharged from the nozzle 27 impacts the material, causing the material to be dispersed. The simultaneous discharge of gas from multiple nozzles 27 can impact and disperse the material, which not only helps the material to mix, but also reduces the operating pressure of the mixing component and protects the mixing component.

[0061] At the same time, considering that powder metallurgy also has the addition of liquid materials such as lubricants and binders, the liquid materials can be pumped into the hose 25 by a liquid pump and discharged from the spray head 27, and the materials are directly sprayed inside the metal materials, which helps to improve the mixing efficiency of the materials. Moreover, when cleaning the mixing barrel 2 later, clean water is directly injected into the hose 25, the spiral blade 12 rotates, and water flow is discharged from the spray head 27 to flush the inside of the mixing barrel 2, which is convenient for cleaning the inside of the mixing barrel 2.

[0062] Referring to Figure 9 The lower end of each auxiliary push plate 13 is provided in a blade shape, and a plurality of through holes 28 are formed in each auxiliary push plate 13. The lower end of the auxiliary push plate 13 is the material shoveling end. When the auxiliary push plate 13 is rotated by the rotating shaft 7, the lower end of the auxiliary push plate 13 shovels the material, and then the material flows along the upper surface of the auxiliary push plate 13 and pushes the material at the bottom to the upper layer of the material in the mixing barrel 2. The blade-shaped lower end of the auxiliary push plate 13 helps to shovel the material onto the auxiliary push plate 13. The plurality of through holes 28 on the auxiliary push plate 13 are arranged to allow part of the material to flow out along the through holes 28 when the material rises, that is, the material shovelled onto the auxiliary push plate 13 is dispersed at different heights in the mixing barrel after mixing. This also helps to mix the material. The blade spacing of the spiral blade 12 allows the material to be dispersed at different heights when it is pushed down to the lower layer, which, together with the through holes 28, disperses and mixes the material.

[0063] Referring to Figure 6 , Figure 7 and Figure 15 A sleeve 29 is rotatably connected to each force rod 11. A limiting rod 30 is arranged on one side of each blocking plate 15. The limiting rod 30 is arranged at the connection position of the cover 9 and the vertical rod 10, and is fixedly connected to the outer side wall of the lower end of the preloading pipe 1. The sleeve 29 arranged on the force rod 11 converts the sliding friction between the push rod 8 and the force rod 11 into rolling friction between the sleeve 29 and the push rod 8, which reduces the wear of the push rod 8 and the force rod 11 and prolongs the service life. Moreover, the limiting rod 30 arranged on the cover 9 restricts the position of the cover 9 after it is rotated and reset, so that the cover 9 can accurately cover the lower end of the preloading pipe 1 after it is reset.

[0064] Referring to Figure 6 and Figure 7 A plurality of air vents 31 are formed in the cover plate 4, and a filter screen is arranged at the position of the air vent 31. The air vents 31 arranged on the cover plate 4 allow the gas injected into the mixing barrel 2 to be smoothly discharged, and ensure that the air pressure in the mixing barrel 2 is balanced with the outside, and the filter screen prevents the material from being impacted and lifted.

[0065] Working principle:

[0066] In the embodiment, the powder metallurgy automatic mixing device is provided, a plurality of preloaded pipes 1 can realize the feeding of a plurality of different materials at a time, and the materials are quantitatively and intermittently discharged into the mixing barrel 2 through the control unit in the later stage, and the mixing assembly is driven to continuously mix the materials falling into the mixing barrel 2; after mixing, the materials are discharged through the discharging assembly;

[0067] The plurality of preloaded pipes 1 realizes the addition of a plurality of materials, and cooperates with the control unit to realize the quantitative and intermittent addition of each material. During the addition process, the mixing assembly continuously mixes the materials. Compared with the existing mixing method, firstly, it can avoid the full loading of materials in the mixing barrel 2, which affects the driving of the mixing assembly, and also can reduce the resistance of the metal materials to the mixing assembly, reduce the wear of the mixing assembly itself, and prolong the service life of the mixing assembly. Secondly, the quantitative and intermittent addition of each material makes the mixing time shorter, which can improve the mixing efficiency;

[0068] The lower end of the plurality of preloaded pipes 1 is provided above the motor 6, the upper end of the rotating shaft 7 is fixed to the output end of the motor 6, the motor 6 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the push rod 8 to rotate. As shown in Figure 7 The push rod 8 rotates counterclockwise with the rotating shaft 7, and when it contacts the force rod 11, the push plate pushes the force rod 11, and the force rod 11 drives the cover 9 to rotate around the vertical rod 10 connected thereto. At this time, the lower end of the preloaded pipe 1 is opened, and the materials in the preloaded pipe 1 fall into the mixing barrel 2. When the push rod 8 presses the force rod 11, the cover 9 rotates, and when it passes the force rod 11, the cover 9 is again blocked from the lower end of the preloaded pipe 1 under the torsional force of the torsional spring connected thereto, and the materials in the preloaded pipe 1 fall. The materials that have fallen into the mixing barrel 2 are mixed under the action of the mixing assembly. The push rod 8 is shaped to make the push rod 8 press the force rod 11 more smoothly, and improve the rotation smoothness of the cover 9;

[0069] The top plate 3 is erected above the mixing barrel 2 through a plurality of support frames 5 to ensure the stability of the plurality of preloaded pipes 1. The lower ends of each preloaded pipe 1 are close to each other and are bundled and fixed to the cover plate 4, so that the cover plate 4, the plurality of preloaded pipes 1, the top plate 3 and the mixing barrel 2 are fixed as a whole, so that the powder metallurgy automatic mixing device has high stability when it is running;

[0070] The mixing assembly is provided to realize the mixing of a plurality of materials by stirring. When the materials are quantitatively and intermittently added to the mixing barrel 2, the helical blade 12 rotates to press the upper layer of materials to the lower layer until the materials are pressed into the mixing barrel 2. Then the materials are pressed to the eccentric position of the bottom of the mixing barrel 2, and the rotation of the plurality of auxiliary push plates 13 scrapes the materials at the bottom of the mixing barrel 2 and lifts them to the upper layer of the materials, so that the materials form a closed loop stirring and mixing in the mixing barrel 2. This method can improve the mixing efficiency and uniformity of the materials.

[0071] The opening and closing of the discharge port can be achieved by the forward and backward movement of the trolley 18 cooperating with the unloading assembly, and no additional equipment or power source is needed; after the trolley 18 moves forward to the unloading assembly, the front end is tilted downward, so that the front end of the carriage passes over the pull plate 32, at this time the end of the pull plate 32 is placed in the carriage, then the trolley 18 is continuously pushed, the trolley 18 presses the jacking rod 17, the jacking rod 17 drives the sealing plate 15 to move along the guide rail 14, at this time the discharge port is gradually opened; during the opening of the discharge port, the sealing plate 15 moves synchronously with the trolley 18, so that the mixed material flowing out of the discharge port can smoothly fall into the carriage; when the carriage is full of mixed material, the trolley 18 is pulled back, the front end of the trolley 18 is hooked on the pull plate 32, the pull plate 32 hooks the carriage and resets with the movement of the carriage, at the same time the pull plate 32 drives the sealing plate 15 to reset and block the discharge port; after the sealing plate 15 resets, the front end of the carriage is tilted downward, and the trolley 18 is pulled away from the pull plate 32 to realize the loading of the trolley 18;

[0072] When the material in each preloading pipe 1 is completely discharged into the mixing bucket 2, the driving assembly is operated to realize the swinging of the mixing bucket 2; in the embodiment, the driving assembly can be composed of a motor and a speed reducer, the motor drives the speed reducer, the speed reducer drives the rotating body 21, and the rotating body 21 drives the mixing bucket 2 to swing left and right; when the mixing bucket 2 swings, the material tilts to one side of the mixing bucket 2, at this time part of the mixing assembly is exposed in the mixing bucket 2, which can reduce the operating pressure of the mixing assembly; at the same time, the swinging of the mixing bucket 2 can realize multi-dimensional stirring and mixing of the material, further improving the mixing uniformity.

[0073] The axis of the rotating shaft 7 is hollow, which cooperates with an external air pump to inject gas into the rotating shaft 7; the gas is injected into the hollow ring body 24 through the hose 25, and the hollow ring body 24 is sealed with the rotating shaft 7 through a rubber ring; when the rotating shaft 7 and the hollow ring body 24 rotate relative to each other, the sealing between the rotating shaft 7 and the hollow ring body 24 is ensured, so that more gas flows from the hollow ring body 24 into the rotating shaft 7; the gas in the hollow ring body 24 flows into the rotating shaft 7 through the air inlet hole on the rotating shaft 7, and then flows along the inside of the rotating shaft 7 and the inside of the spiral blade 12, and is finally discharged from the nozzle 27 on the spiral blade 12; when the material covers the nozzle 27, the gas discharged from the nozzle 27 impacts on the material, dispersing the material; since multiple nozzles 27 discharge gas at the same time, the material can be impacted and dispersed, which not only helps the mixing of the material, but also reduces the operating pressure of the mixing assembly and protects the mixing assembly.

[0074] At the same time, considering that powder metallurgy also has the addition of liquid materials such as lubricants and binders, the liquid materials can be pumped into the hose 25 by a liquid pump and discharged from the spray head 27, and the materials are directly sprayed inside the metal materials, which helps to improve the mixing efficiency of the materials. In addition, when cleaning the mixing barrel 2 later, clean water is directly injected into the hose 25, the helical blade 12 rotates, and water flow is discharged from the spray head 27 to flush the inside of the mixing barrel 2, which facilitates the cleaning of the inside of the mixing barrel 2.

[0075] The low end of the auxiliary push plate 13 is the material shoveling end. When the shaft 7 drives the auxiliary push plate 13 to rotate, the low end of the auxiliary push plate 13 shovels the material, and then the material flows along the upper surface of the auxiliary push plate 13 and pushes the material at the bottom to the upper layer of the material in the mixing barrel 2. The low end of the auxiliary push plate 13 is provided in the form of a knife edge, which helps to shovel the material into the auxiliary push plate 13. In addition, the plurality of through holes 28 on the auxiliary push plate 13 are arranged so that when the material rises, part of the material falls along the through holes 28, that is, the material shoveling into the auxiliary push plate 13 is dispersed at different heights in the mixing barrel after mixing. This also helps to mix the material. In addition, the helical blade 12 is arranged at intervals, so that when the material is pushed down to the lower layer, the material can be dispersed at different heights, which, together with the through holes 28, disperses and mixes the material.

[0076] The sleeve 29 arranged on the stress rod 11 converts the sliding friction between the push rod 8 and the stress rod 11 into rolling friction between the sleeve 29 and the push rod 8, which reduces the wear of the push rod 8 and the stress rod 11 and prolongs the service life. In addition, the limiting rod 30 is arranged on the cover 9 to constrain the position of the cover 9 after rotation and reset, so that the cover 9 can accurately cover the lower end of the preloading pipe 1 after reset.

[0077] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A powder metallurgy automatic compounding device, characterized by: Including loading unit, control material unit and mixing unit; The loading unit for loading material includes a plurality of preloaded pipes (1), and the lower end outlet position of each preloaded pipe (1) is provided with the control material unit; The control material unit for controlling intermittent feeding of material includes a cover (9) arranged at the lower end of the preloaded pipe (1), the edge of the cover (9) is rotationally connected with a vertical rod (10), and the vertical rod (10) is rotationally connected to the cover (9) through a torsional spring; The mixing unit for mixing material includes a mixing barrel (2) and a mixing assembly arranged in the mixing barrel (2) for stirring and uniformly mixing the material; The mixing barrel (2) is provided with a rotating shaft (7) at the axial position, the upper end of the rotating shaft (7) extends upward to the position of the cover (9), and a plurality of push rods (8) are uniformly arranged on the outer circle of the upper end of the rotating shaft (7), the push rods (8) can drive the force bars (11) arranged at the eccentric position of the lower surface of each cover (9); The loading unit includes a top plate (3), a plurality of preloaded pipes (1) are arranged in a circular array on the top plate (3), the upper end of the preloaded pipe (1) is flared, the lower ends of the preloaded pipes (1) are close to each other and connected with a cover plate (4), the lower end of each preloaded pipe (1) penetrates through the cover plate (4), the cover plate (4) covers the upper end of the mixing barrel (2), and the lower end of the preloaded pipe (1) is provided with the control material unit; the edge of the top plate (3) is fixed to the mixing barrel (2) through a plurality of support frames (5), the lower end of the mixing barrel (2) is provided with a discharge port, a discharging assembly is arranged at the discharge port position, and the discharging assembly can control the release of the mixed material in the mixing barrel (2); The mixing assembly includes a spiral blade (12) arranged on the outer circle of the rotating shaft (7); the mixing assembly further includes a plurality of auxiliary push plates (13) arranged close to the inner side wall of the mixing barrel (2), each auxiliary push plate (13) is arc-shaped and obliquely arranged in the mixing barrel (2), the auxiliary push plates (13) are divided into a plurality of groups in the up-down direction, each auxiliary push plate (13) in each group is connected to the rotating shaft (7) through a connecting rod (33), and the auxiliary push plates (13) can push and disperse the material; The discharging assembly includes guide rails (14) symmetrically arranged on both sides of the discharge port, a blocking plate (15) is arranged between the guide rails (14), anti-dropping rods (16) are symmetrically arranged on both sides of the blocking plate (15), the anti-dropping rods (16) are slidably arranged in the guide rails (14); one end of the blocking plate (15) is provided with a pulling plate (32) at the middle position, the lower surface of one end of the blocking plate (15) is provided with a jacking rod (17), and the carriage of an external trolley (18) is pushed on the jacking rod (17), so as to slide the blocking plate (15) and open the discharge port; The rotating shaft (7) is hollow, a plurality of air inlet holes are arranged at the position close to the motor (6), a hollow ring body (24) is further rotationally connected to the rotating shaft (7), the hollow ring body (24) is arranged at the air inlet hole position, and the hollow ring body (24) is connected with an external air pump through a hose (25). The blade of the spiral blade (12) is hollow, and a plurality of spray heads (27) are arranged on the side wall of the blade, the spray heads (27) are communicated with the cavity inside the spiral blade (12), and the cavity is communicated with the hollow part of the rotating shaft (7); A plurality of air release holes (31) are arranged on the cover plate (4), and a filter screen is arranged at the position of the air release hole (31); Each push rod (8) is arranged in an arc shape, and the arc surface of each push rod (8) extrudes the outer ring of the stress rod (11); The outer side of the mixing barrel (2) is symmetrically provided with auxiliary assemblies, the auxiliary assemblies are used for assisting the mixing unit to assist in mixing the materials, each auxiliary assembly comprises a supporting leg (20), a driving assembly is arranged on the outer side of the upper end of the supporting leg (20), the output end of the driving assembly is fixedly connected with a rotating body (21), and the rotating body (21) is fixedly connected to the outer side wall of the upper end of the mixing barrel (2); The inner side of the supporting leg (20) is provided with an arc-shaped guide plate (22), the guide plate (22) is slidably connected with a connecting block (23), and the connecting block (23) is fixedly connected to the outer side wall of the lower end of the mixing barrel (2); The lower end of each auxiliary push plate (13) is arranged in a blade shape, and a plurality of through holes (28) are arranged on each auxiliary push plate (13).

2. The powder metallurgy automatic compounding device according to claim 1, characterized in that: Each stress rod (11) is rotatably connected with a sleeve pipe (29); one side of each cover (9) is provided with a limiting rod (30), the limiting rod (30) is arranged at the connecting position of the cover (9) and the vertical rod (10), and the limiting rod (30) is fixedly connected to the outer side wall of the lower end of the preloading pipe (1).

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