A forming device for powder metallurgy part production

Abstract

The application discloses a forming device for powder metallurgy part production, which comprises a workbench, a forming mechanism, a feeding mechanism, a feeding mechanism and a conveying mechanism. The forming mechanism comprises an upper die punch, a lower die punch, a forming cavity, a first telescopic cylinder for driving the upper die punch to stamp and a second telescopic cylinder for driving the lower die punch to stamp. The lower die punch is rotationally connected with a piston rod. The conveying mechanism is used for conveying a green body. A control module is arranged. In the application, the feeding mechanism can be driven to feed the forming cavity when the upper die punch is retracted, the feeding mechanism can be fed when the upper die punch is extended, the lower die punch can be stamped when the lower die punch is extended, and the lower die punch can be rotated when the lower die punch is retracted outside the forming cavity, so that the green body is slid from the lower die punch to the conveying mechanism. Without increasing a power source, the powder is not only pressed and formed, but also fed, discharged and cleaned, so that the cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of powder metallurgy, in particular to a forming device for powder metallurgy part production. BACKGROUND

[0002] Powder metallurgy is a processing method for preparing metal powder and making products by forming and sintering processes of metal powder or a mixture of metal powder and non-metal powder. Powder metallurgy can obtain special functional composite materials and products of various metals with large differences in melting point and density, metal and ceramic, metal and plastic, and other heterogeneous materials.

[0003] The utility model discloses a novel dustproof powder metallurgy forming device, including base, control panel, top seat, lifting plate, first electric telescopic rod, base, second electric telescopic rod, cross board, pressure seat, leather sheath, ventilation pipeline, push plate, third electric telescopic rod, support, pedestal, object box, fan, conveying pipeline. The device reaches the requirement of work plane by the first electric telescopic rod driving the lifting plate to ascend, and the third electric telescopic rod drives the push plate to complete the feeding work, and the second electric telescopic rod drives the pressure seat to better complete the part pressing work, and the leather sheath can better cover the work area, and the ventilation pipeline can better remove the dust, so that not only the dust pollution is reduced, but also the production quality of the parts is protected.

[0004] However, the patent reduces dust pollution to a certain extent, but feeding and taking out the green body pressed and formed still need to pass through different devices or manual carrying, which is low in efficiency and high in production cost.

[0005] Therefore, it is necessary to provide a new technical scheme to overcome the above defects. SUMMARY

[0006] The present application aims at providing a forming device for powder metallurgy part production, which can effectively solve the above technical problems.

[0007] To achieve the purpose of the present application, the following technical scheme is adopted:

[0008] A forming device for powder metallurgy part production, comprising: a workbench, a feeding mechanism for feeding powder, a feeding mechanism for sending powder to a forming mechanism, a forming mechanism for pressing and forming powder, a conveying mechanism for conveying the green body pressed and formed to the next procedure, a dust removal mechanism for collecting dust, an inclined assembly, and a detection device.

[0009] The feeding mechanism comprises: a powder storage bin, a discharge pipe for discharging powder to the feeding disc, and a solenoid valve.

[0010] The forming mechanism comprises an upper die, a lower die, a forming cavity, a first telescopic cylinder and a second telescopic cylinder for driving the upper die and the lower die to stamp respectively;

[0011] The feeding mechanism comprises a feeding disc, a slide rail and a connecting rod, the feeding disc is slidably connected with the slide rail through the connecting member; when the piston rod of the first telescopic cylinder is extended, the feeding disc is driven to slide along the slide rail towards the forming cavity through the connecting rod; when the piston rod of the first telescopic cylinder is retracted, the feeding disc is driven to slide along the slide rail towards the discharge pipe through the connecting rod;

[0012] The inclination assembly inclines the lower die towards the conveying mechanism when the lower die moves downwards;

[0013] The dust removal mechanism comprises a first dust removal unit for removing dust from the forming cavity and the lower die, and a second dust removal unit for removing flying dust;

[0014] The detection device comprises an information acquisition unit, a threshold unit, a color analysis unit and a central control unit; the information acquisition unit acquires an image of the forming cavity and the lower die, and uploads the image to the color analysis unit; the color analysis unit analyzes the color difference of the image;

[0015] The color difference is compared with a threshold value provided by the threshold unit to obtain a comparison result; if the color difference is greater than the threshold value, dust removal is performed through the first dust removal unit; if the color difference is less than the threshold value, the first dust removal mechanism does not perform dust removal; the comparison result is compared with historical data to determine whether they are similar; if they are similar, manual inspection is performed to determine whether the equipment has a fault.

[0016] Further, the feeding disc comprises a bottom plate, a cylinder and a baffle arranged in sequence along a powder conveying direction; the cylinder is slidably connected with the bottom plate; the baffle is rotatably connected with the bottom plate; the bottom of the bottom plate is slidably connected with the slide rail through the connecting member; and the cylinder is provided with a vibrator.

[0017] Further, the cylinder is a transparent cylinder; the vibrator is communicatively connected with the central control unit; the information acquisition unit is further used to acquire an image of the transparent cylinder; and the image of the transparent cylinder is analyzed through the color analysis unit;

[0018] When the excess material in the transparent cylinder is detected, the central control unit controls the vibrator to vibrate; after the vibration of the vibrator is over, the color analysis unit verifies the image of the transparent cylinder to analyze whether there is excess material remaining in the transparent cylinder; if yes, secondary circulation is carried out; after the secondary circulation is over, verification is carried out again, if there is excess material remaining, tertiary circulation is carried out or an alarm signal is sent.

[0019] Further, a connecting block is arranged between the piston rod of the second telescopic cylinder and the lower die punch; the connecting block is rotationally connected with the lower die punch, and the rotation axis is located on the side of the lower die punch close to the conveying mechanism; a connecting groove is formed on the side of the connecting block close to the conveying mechanism; a reset member connecting the connecting groove and the lower die punch is arranged in the connecting groove; when the piston rod of the second telescopic cylinder is retracted, the lower die punch rotates towards the conveying mechanism; when the piston rod of the second telescopic cylinder is extended, the lower die punch is restored to the original position by its own gravity and the elastic force of the reset member.

[0020] Further, a first inclined surface is arranged on the bottom of the lower die punch, a second inclined surface is arranged on the connecting block, and a groove is arranged on the side of the second inclined surface and the first inclined surface close to each other; a third inclined surface matched with the first inclined surface is arranged on the top of the protruding part; when the lower die punch moves downwards, the third inclined surface first slides along the first inclined surface, and then slides along the second inclined surface; when sliding to the end point of the second inclined surface, the protruding block is clamped into the groove.

[0021] Further, the tilting assembly is composed of a mounting seat, a protruding block, an elastic member and a micro switch; the protruding block is composed of a protruding part, a recessed part and a connecting part; the protruding block is movably arranged in the mounting seat, and the protruding part of the protruding block protrudes out of the mounting seat; the connecting part is connected with the mounting seat through the elastic member; the recessed part is connected with the micro switch when being pressed down;

[0022] When the lower die punch presses down the protruding part, the recessed part presses down the micro switch, and the micro switch feeds back a first signal to the detection device; when the lower die punch rises, the elastic member drives the protruding block to reset, the recessed part is separated from the micro switch, and the micro switch feeds back a second signal to the detection device.

[0023] Further, the information acquisition unit is installed at a dust suction end of the first dust removal unit; the first dust removal unit is connected with the second telescopic cylinder through a transmission assembly; the transmission assembly comprises a first connecting rod rotatably connected with the lower die punch, a second connecting rod connecting the first connecting rod and the dust suction end, a limiting piece installed at a side away from each other of the first connecting rod and the second connecting rod, and an adjusting piece adjusting an included angle of the first connecting rod and the second connecting rod; the dust suction end is rotatably connected with the second connecting rod; the first connecting rod and the second connecting rod are rotatably connected through the adjusting piece; when the lower die punch descends, the transmission assembly drives the first dust removal unit to rotate into between the lower die punch and the forming cavity.

[0024] Further, the specific analysis mode of the color analysis unit is: setting a specific color in the image as a background color and setting a powder color as a pre-warning color; dividing a color interval in the image into a background color interval a and a pre-warning color interval β; setting a center point of the image as a coordinate origin and merging the image with a coordinate system; defining positions of each end point of the background color interval a and the pre-warning color interval β respectively, defining each end point of the background color interval as P a (Xn, Yn), and defining each end point of the pre-warning color interval β as P β (Xn, Yn), wherein n represents different end points; calculating an area S β of the pre-warning color interval β and calculating an area S a of the background color interval a; setting a proportion BLS β, comparing the calculated proportion BL with a threshold value θbl, if BL>θbl, the dust removal mechanism needs to be dusted; comparing the analysis result with historical analysis data to determine whether the comparison result is similar to the historical analysis result; if there is similarity, manual inspection is performed to determine whether the equipment has a fault.

[0025] Further, the specific way of comparing with historical analysis data is: comparing S β of the pre-warning color interval with an area S β1 of the pre-warning color interval measured last time in the historical data; calculating a proportion bl of the same position area S β, bl=S β; if 0.7<bl<1, it is determined to be similar, if bl=1, it is determined to be the same; if bl>0.7, the interval range is limited, the proportion bl1 of the area S β1 of the pre-warning color interval at the same position and the area S β2 of the pre-warning color interval measured last time is verified again; if bl1≥0.9, it is determined to be similar or the same, a fault signal is sent, and manual inspection is reminded.

[0026] Further, the second connecting rod is provided with a reversible motor at one end away from the first connecting rod, and the output of the reversible motor is connected to the dust collection end through a connecting buckle; when the detection device receives the first signal, the central control unit controls the reversible motor to drive the dust collection end to rotate, controls the information acquisition unit to acquire images, and controls the dust collector to collect dust according to the comparison result.

[0027] Compared with the prior art, the present application has the following beneficial effects: the present application can drive the feeding mechanism to feed the forming cavity when the upper die punch retracts, make the feeding mechanism feed when the upper die punch extends, perform stamping when the lower die punch extends, and rotate when the lower die punch retracts out of the forming cavity, so that the green body slides from the lower die punch to the conveying mechanism, and the dust removal mechanism detects the lower die punch and the forming cavity when the lower die punch retracts, without increasing the power source, not only realizing the powder pressing forming, but also realizing the functions of feeding, discharging and cleaning, greatly reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, but do not constitute a limitation of the present application.

[0029] Figure 1 It is a structural schematic view of the forming device for producing powder metallurgy parts.

[0030] Figure 2 It is an explosion schematic view of the forming device for producing powder metallurgy parts.

[0031] Figure 3 It is a structural schematic view of the cylinder of the forming device for producing powder metallurgy parts.

[0032] Figure 4 It is a structural schematic view of the lower die punch assembly of the forming device for producing powder metallurgy parts.

[0033] Figure 5 It is Figure 4 It is a structural schematic view of the middle A part and the inclination assembly.

[0034] Figure 6 It is a structural schematic view of the transmission assembly of the forming device for producing powder metallurgy parts.

[0035] Figure 7 It is a structural schematic view of the inclination assembly of the forming device for producing powder metallurgy parts.

[0036] Figure 8 It is a state schematic view of the lower die punch inclination, the recess part and the micro switch connection of the forming device for producing powder metallurgy parts.

[0037] In the figure: 1, workbench; 2, forming mechanism; 3, feeding mechanism; 4, feeding mechanism; 21, upper die punch; 22, lower die punch; 23, forming cavity; 24, first telescopic cylinder; 25, second telescopic cylinder; 41, feeding disc; 42, connecting rod; 5, inclined assembly; 6, reset piece; 7, dust removal mechanism; 711, dust removal end; 72, second dust removal unit; 8, transmission assembly; 81, first connecting rod; 82, second connecting rod; 83, limiting piece; 84, adjusting piece; 85, forward and reverse motor; 86, buckle; 31, stock bin; 32, discharge pipe; 411, bottom plate; 412, barrel; 4111, connecting piece; 11, slide rail; 4112, baffle; 9, connecting block; 91, connecting groove; 92, rotating shaft; 221, first inclined surface; 93, second inclined surface; 51, mounting seat; 52, elastic piece; 53, micro switch; 54, protruding block; 541, protruding part; 542, recessed part; 543, connecting part; 5411, third inclined surface. Embodiments

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the technical scheme in the embodiments of the present application to make clear and complete description, obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments.

[0039] In the description of the present application, it should be understood that the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application. When a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and the like used herein are only for illustrative purposes.

[0040] As Figures 1 to 8The forming device for producing powder metallurgy parts comprises a workbench 1, a powder supply mechanism 3 for supplying powder to a powder feeding mechanism 4, the powder feeding mechanism 4 for sending the powder to a forming mechanism 2, the forming mechanism 2 for pressing and forming the powder, a conveying mechanism for conveying the green compact to the next procedure, a dust removal mechanism 7 for collecting dust, and a detection device for detecting dust.

[0041] The powder supply mechanism 3 comprises a powder bin 31 for storing powder, a discharge pipe 32 for discharging powder to a powder feeding disc 41, and a solenoid valve; a central control unit controls the opening and closing of the solenoid valve according to the pre-stored part information in a database to control the powder discharge amount of the corresponding part when pressing different parts, and supplies the powder feeding mechanism 4 to meet the powder supply requirements of different parts.

[0042] The feeding mechanism 4 comprises a feeding disc 41 and a slide rail 11, the feeding disc 41 is connected with the slide rail 11 through a connecting piece 4111, so that the feeding disc 41 moves along the length direction of the slide rail 11, and the slide rail 11 is fixedly installed on the table top of the workbench 1; the feeding disc 41 comprises a bottom plate 411, a barrel 412 and a baffle 4112 which are sequentially arranged on the bottom plate 411 along the powder conveying direction; the barrel 412 is preferably a transparent barrel 412, so that the residual powder in the barrel 412 can be conveniently observed; the barrel 412 is in sliding connection with the bottom plate 411; the baffle 4112 is arranged on both sides of the bottom plate 411 and is in rotary connection with the bottom plate 411, and a sliding groove is arranged on the baffle 4112 and is in communication with the sliding groove arranged on the top of the bottom plate 411, so that the barrel 412 can slide onto the baffle 4112 from the bottom plate 411, and when the barrel 412 slides onto the baffle 4112, the barrel 412 is completely separated from the bottom plate 411, the powder in the barrel 412 directly falls into the forming cavity 23, and the powder does not come into contact with the baffle 4112, and the bottom of the barrel 412 can also be rotatably installed with the powder baffle 4112, and the baffle 4112 rotates downward when separated from the bottom plate 411, so that the powder falls into the forming cavity 23 from the barrel 412; the bottom of the bottom plate 411 is fixedly installed with the connecting piece 4111, the connecting piece 4111 is in sliding connection with the slide rail 11, and the connecting piece 4111 is a sliding block or a pulley, so that the barrel 412 can slide conveniently; a vibrator is installed on the barrel 412, and the vibrator is used for vibrating the residual powder on the inner wall of the barrel 412 out of the barrel 412, so that the powder in the barrel 412 is shaken out more completely, and then the powder quantity entering the forming cavity 23 is more accurate, and the precision of the green body formed by pressing is higher; when the piston rod of the first telescopic cylinder 24 rises, the feeding disc 41 is driven by the connecting rod 42 to move towards the forming cavity 23, when the bottom plate 411 of the feeding disc 41 moves to the terminal point of the slide rail 11, the barrel 412 continues to move and is separated from the bottom plate 411, and simultaneously forces the baffle 4112 to rotate, the barrel 412 continues to move along the sliding groove on the baffle 4112, at this time, the powder in the barrel 412 falls into the forming cavity 23, and then the residual powder in the barrel 412 falls into the forming cavity 23 through vibration of the vibrator; when moving in the reverse direction, the barrel 412 slides along the sliding groove towards the baffle 4112, the baffle 4112 rotates back to the original position, and then the barrel 412 drives the bottom plate 411 to move towards the feeding opening at the bottom of the feeding mechanism 3 until the barrel 412 moves below the feeding opening; the piston rod of the first telescopic cylinder 24 drives the feeding disc 41 to move along the slide rail 11 through the connecting rod 42, one end of the connecting rod 42 is hinged to the piston rod of the first telescopic cylinder 24, and the other end of the connecting rod 42 is hinged to the feeding disc 41; when the piston rod of the first telescopic cylinder 24 is retracted or extended, the ends of the connecting rod 42 rotate respectively, so as to drive the feeding disc 41 to slide along the slide rail 11; in this way, when the piston rod of the first telescopic cylinder 24 is retracted, the feeding disc 41 is driven to feed; and when the piston rod of the first telescopic cylinder 24 is extended, the upper die punch 21 is driven to stamp;From the above description, it can be seen that the upper die 21 can not only achieve the effect of stamping, but also can feed and take the material through driving the feeding mechanism 4, thereby a large amount of production cost can be saved.

[0043] The forming mechanism 2 comprises the upper die 21, the lower die 22, the forming cavity 23, the first telescopic cylinder 24 for driving the upper die 21 to stamp, and the second telescopic cylinder 25 for driving the lower die 22 to stamp, and the upper die 21 and the lower die 22 cooperate to extrude and form the powder in the forming cavity 23.

[0044] The connecting block 9 is provided between the lower die 22 and the piston rod of the second telescopic cylinder 25, and a connecting groove 91 is formed in the side of the connecting block 9 close to the conveying mechanism; the bottom of the connecting block 9 is fixedly installed on the piston rod of the second telescopic cylinder 25, and the connecting groove 91 is rotationally connected with the lower die 22 through the rotating shaft 92, so that the lower die 22 can only rotate in the direction of the connecting groove 91, and the center of gravity of the lower die 22 is always on the side away from the conveying mechanism when rotating, the connecting groove 91 can also avoid the lower die 22 from excessively tilting, and facilitate the recovery to the original position after tilting; the connecting groove 91 is provided with the reset member 6, the connecting groove 91 and the lower die 22 are connected through the reset member 6, and the reset member 6 is used for helping the lower die 22 to reset and buffering when the lower die 22 rotates; preferably, the reset member 6 is an array of springs.

[0045] The tilt assembly 5 is composed of a mounting seat 51, a protruding block 54, an elastic member 52 and a micro switch 53. The protruding block 54 is installed in the mounting seat 51 and can move up and down along the mounting seat 51. When the protruding block 54 moves downward, it contacts the micro switch 53. The protruding block 54 is composed of a protruding part 541, a recessed part 542 and a connecting part 543. The protruding part 541 protrudes out of the mounting seat 51. The elastic member 52 is arranged in the mounting seat 51, and the two ends of the elastic member 52 are connected to the mounting seat 51 and the connecting part 543 respectively. By arranging the elastic member 52, the protruding block 54 can automatically restore to its original state during the upward movement of the lower die punch 22, thereby avoiding the continuous contact between the recessed part 542 of the protruding block 54 and the micro switch 53. The bottom of the lower die punch 22 near the side of the conveying mechanism is provided with a first inclined surface 221, and the connecting block 9 is provided with a second inclined surface 93. A groove is arranged on the side close to the first inclined surface 221 and the second inclined surface 93. The second inclined surface 93 is used to prevent the connecting block 9 from interfering with the mounting seat 51 and the protruding block 54 when the protruding part 541 is stuck in the groove. The top of the protruding part 541 is provided with a third inclined surface 5411, which matches the first inclined surface 221. When the first inclined surface 221 contacts the third inclined surface 5411, the first inclined surface 221 presses the third inclined surface 5411 downward, forcing the protruding block 54 to slide along the first inclined surface 221, and causing the protruding part 541 to be stuck in the groove. Subsequently, the elastic member 52 continuously stores elastic potential energy, and the protruding block 54 continuously accumulates counterforce, forcing the lower die punch 22 to rotate towards the conveying mechanism. The green body on the lower die punch 22 is automatically slid onto the conveying mechanism under the influence of gravity, without the need for manual or mechanical removal of the green body, greatly simplifying the production process and saving a large amount of cost. At the same time, the lower die punch 22 forces the recessed part 542 to contact the micro switch 53. The micro switch 53 feeds back a first signal to the central control unit in real time. The central control unit controls the image acquisition unit to acquire the images of the forming cavity 23 and the lower die punch 22, and the signal is fed back to the central control unit through the contact between the recessed part 542 and the micro switch 53. As can be seen from the above description, when the lower die punch 22, the tilt assembly 5, the micro switch 53 and the detection device cooperate, the control function can be realized through a simple program. There is no complex program, the control mechanism of the control process is relatively simple, the requirement for programming is low, and the software failure rate is low. When the recessed part 542 does not contact the micro switch 53, the micro switch 53 does not feed back the first signal to the control unit. During the process of multiple punch forming, the lower die punch 22 does not move out of the forming cavity 23, and the recessed part 542 does not contact the micro switch 53, which can avoid the false signal of the micro switch 53. When the lower die punch 22 rises, the elastic member 52 drives the protruding block 54 to reset, the recessed part 542 is separated from the micro switch 53, and the micro switch 53 feeds back a second signal to the detection device in real time. In this way, the program control can be realized through a simple structure, and the program is simple and has a low failure rate. The mounting seat 51 is slidably installed below the lower die punch 22, and automatically restores to its original position under the spring force when the lower die punch 22 moves upward.

[0046] The conveying mechanism is located at the position of the outlet below the forming cavity 23, so as to take out the green body of the lower die punch 22 and convey the green body pressed and formed by the forming mechanism 2 to the next process.

[0047] The dust removal mechanism 7 comprises a first dust removal unit for removing the powder remaining on the forming cavity 23 and the lower die punch 22, and a second dust removal unit 72 for removing the dust; the first dust removal unit is a dust collector, and the dust removal end 711 of the dust collector is connected with the lower die punch 22 through the transmission assembly 8; the second dust removal unit 72 comprises a dust removal cover and an air blower in communication with the dust removal cover through an air pipe; the dust collector and the air blower can be selected according to the actual situation.

[0048] The transmission assembly 8 comprises: a first connecting rod 81 rotatably connected with the bottom of the lower die punch 22, a second connecting rod 82 rotatably connected with the first connecting rod 81, a limiting piece 83 for limiting the maximum included angle between the first connecting rod 81 and the second connecting rod 82, and an adjusting piece 84 for fixing the included angle between the first connecting rod 81 and the second connecting rod 82; a fixed rod installed on one side of the forming cavity 23 close to the transmission assembly 8, used for fixing the rotating shaft 92 connecting the first connecting rod 81 and the second connecting rod 82 at a specific position as needed, so that the second connecting rod 82 rotates with the first connecting rod 81 when the first connecting rod 81 rotates, and the fixed rod can be a telescopic and rotatable fixed rod, thereby facilitating adjustment; a reversible motor 85 is installed at the end of the second connecting rod 82 away from the first connecting rod 81, the output shaft of the reversible motor 85 is locked with the dust suction end of the dust collector through a connecting buckle, the connecting buckle is a lock buckle, and the dust suction end of the dust collector rotates with the output shaft of the reversible motor 85 when the output shaft rotates, so that the industrial camera on the dust collector rotates to facilitate detection; the limiting piece 83 is used to limit the maximum included angle between the first connecting rod 81 and the second connecting rod 82, so that the maximum included angle is less than 180 degrees, thereby avoiding that the angle between the first connecting rod 81 and the second connecting rod 82 is too large to be detected; the adjusting piece 84 fixes the included angle between the first connecting rod 81 and the second connecting rod 82 when it is tightened, and the first connecting rod 81 and the second connecting rod 82 can rotate freely when the adjusting piece 84 is loosened, thereby facilitating adjustment; when the piston rod of the second telescopic cylinder 25 retracts, the dust suction end of the dust collector approaches the lower die punch 22 or moves to between the lower die punch 22 and the forming cavity 23, and the dust collector is started when dust removal is needed; when the piston rod of the second telescopic cylinder 25 extends, the dust suction end of the dust collector is away from the lower die punch 22; the first connecting rod 81 can be a telescopic connecting rod; the transmission assembly 8 can also be driven by a gear, and the direction of movement is changed by gear transmission, so that the first dust removal unit moves to between the lower die punch 22 and the forming cavity 23; as can be seen from the above description, by arranging the dust suction end of the dust collector on the transmission assembly 8, the dust suction end 711 can enter between the lower die punch 22 and the forming cavity 23 for dust removal when the lower die punch 22 descends, and only through a simple structure, the automatic movement of the dust suction end can be realized, the structure is simple, and the manufacturing cost is low; when the lower die punch 22 rises, the dust suction end 711 is away from the lower die punch 22 and the forming cavity 23, so as to avoid interference between the dust suction end 711 and the lower die punch 22.

[0049] Preferably, the pressing times are at least once; the pressing modes at least include: upper die punch 21 stamping; lower die punch 22 stamping; upper die punch 21 and lower die punch 22 stamping together; upper die punch 21 and lower die punch 22 stamping in sequence; or a combination of several stamping modes, the upper die punch 21 stamps when the lower die punch 22 is in the forming cavity 23; the lower die punch 22 stamps when the upper die punch 21 is in the forming cavity 23, the forming cavity 23 is preferably a replaceable forming cavity 23, different forming cavities 23 are used when different parts are produced; the forming cavity 23 can also be vibrated during stamping, so that the green compact is more compact.

[0050] The detection device comprises an information acquisition unit, a threshold unit, a color analysis unit, a central control unit, the micro switch 53 is in communication connection with the central control unit, when the central control unit receives the first signal sent by the micro switch 53, the central control unit controls the rotation of the reversing motor 85, controls the information acquisition unit to detect the dust condition in the lower die punch 22 and the forming cavity 23, and controls the dust removal of the first dust removal unit when detecting that there is residual powder; when the central control unit receives the second signal sent by the micro switch 53, the central control unit controls the information acquisition unit to stop detection; the micro switch 53 sends the first signal and the second signal, and the central control unit controls different movement modes, the program is simple, and the failure rate is low; the information acquisition unit is driven by the second connecting rod 82 to rotate, acquires the image of the forming cavity 23 and the lower die punch 22, and uploads the image to the color analysis unit; the color analysis unit analyzes the color difference of the color in the image; the color difference is compared with the threshold value provided by the threshold unit to obtain a comparison result, if the color difference is greater than the threshold value, the first dust removal unit is used for dust removal, and if the color difference is less than the threshold value, the first dust removal mechanism 7 does not perform dust removal; whether the comparison results of multiple times are similar is determined; if similar, manual inspection is performed to judge whether the equipment has a fault; in this way, not only whether there is residual powder can be detected, but also whether the equipment has a fault can be verified.

[0051] The specific analysis method of the color analysis unit is: setting a specific color in the image as a background color and setting a powder color as a warning color; dividing the color interval in the image into a background color interval α and a warning color interval β; setting the center point of the image as the coordinate origin and merging the image with the coordinate system; defining the positions of the respective endpoints of the background color interval α and the warning color interval β, defining the respective endpoints of the background color interval as Pα(Xn, Yn), and defining the respective endpoints of the warning color interval β as Pβ(Xn, Yn), wherein n represents different endpoints; calculating the area Sβ of the warning color interval β and the area Sα of the background color interval α; setting a proportion BL, comparing the calculated proportion BL with a threshold value θbl, and if BL>θbl, the dust removal mechanism 7 needs to be used for dust removal;

[0052] The analysis result is compared with historical analysis data, and the specific way of comparing with historical analysis data is that the Sβ of the early warning color interval is compared with the area Sβ1 of the last measured early warning color interval in the historical data; the proportion bl of the same position area Sβ is calculated, bl=Sβ÷Sβ1; if 0.7<bl<1, it is determined to be similar, if bl=1, it is determined to be the same; if bl>0.7, the interval range is limited, and the proportion bl1 of the area Sβ1 of the early warning color interval at the same position and the area Sβ2 of the early warning color interval measured last time is verified again; if bl1≥0.9, it is determined that there is similarity or sameness, a fault signal is sent, and manual inspection is reminded to determine whether the equipment has a fault; through real-time detection of the residual material by the detection device, the powder residual condition of the forming cavity 23 and the lower die punch 22 can be found in real time, and the residual dust can be cleaned in time; when the powder residual position is similar, manual maintenance can be notified in time, which can avoid the abnormal situation of the same batch of green bodies due to untimely maintenance.

[0053] Preferably, the vibrator is in communication connection with the central control unit; the information acquisition unit is further used to acquire the image of the transparent cylinder 412; the image of the transparent cylinder 412 is analyzed by the color analysis unit, and the analysis method is the same as the above analysis method; when it is detected that there is excess material in the transparent cylinder 412, the central control unit controls the vibrator to vibrate, and the time of each cycle is set to 10-30 seconds; after the vibration of the vibrator is finished, the image of the transparent cylinder 412 is verified to analyze whether there is excess material residue; if there is, secondary circulation is carried out; after the secondary circulation is finished, the residual excess material is verified again, if there is excess material residue, tertiary circulation or an alarm signal is sent; after multiple vibrations, there is still excess material in the transparent cylinder 412, which indicates that the transparent cylinder 412 may have a fault, or the surface of the industrial camera is not clean, and manual maintenance is needed; the excess material in the transparent cylinder 412 is detected by the information acquisition unit, and the vibration of the vibrator can reduce the adhesion of the excess material in the cylinder 412, make the powder in the cylinder 412 shake into the forming cavity 23, thereby improving the precision of the product; and the cylinder 412 is detected in real time, which can timely find the fault of the cylinder 412, and avoid the situation that the pressing problem occurs due to batch material shortage.

[0054] Preferably, the workbench 1 is further provided with a touch display screen, at least the green body forming data, fault data, feeding data, and the remaining amount data of the material bin 31 are displayed on the touch display screen in real time, so as to facilitate real-time observation and determine the condition of the equipment according to the data; the touch display screen is further connected with the control terminal and the server through the communicator, and is used for transmitting information to the control terminal and the server in real time through the communicator, so as to store the information in the server or remotely control through the control terminal and the server; the touch display screen is provided with a built-in storage device, which is used for offline storage and retrieval of historical data; by touching the virtual buttons on the touch display screen, the information can be consulted or the die work can be controlled in real time; by touching the buttons on the touch display screen, the information of the parts to be produced can be set, or the parts to be produced can be directly selected from the database, and then the equipment is started, the control module controls the feeding mechanism 3 to quantitatively feed according to the selected parts, controls the die to carry out one or more stamping, and controls the transmission efficiency of the conveying mechanism; in this way, not only the production information can be consulted in real time, but also the production forming process can be controlled by touching the touch display screen.

[0055] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the mechanical parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection mode in the prior art, which will not be described in detail here, and the contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0056] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

Claims

1. A forming apparatus for producing powder metallurgy parts, characterized in that, The device comprises a workbench, a powder supply mechanism, a powder feeding mechanism, a powder molding mechanism, a powder conveying mechanism, a dust removal mechanism, an inclination assembly, and a detection device. The powder feeding mechanism comprises a feeding disc, a slide rail, and a connecting rod. The powder supply mechanism comprises a powder storage bin and a discharge pipe. The powder molding mechanism comprises an upper die, a lower die, a molding cavity, a first telescopic cylinder, and a second telescopic cylinder. One end of the connecting rod is hingedly connected to the piston rod of the first telescopic cylinder, and the other end of the connecting rod is hingedly connected to the feeding disc. When the piston rod of the first telescopic cylinder is extended, the feeding disc is driven to slide along the slide rail towards the molding cavity through the connecting rod. When the lower die moves downward, the inclination assembly inclines the lower die towards the conveying mechanism. The dust removal mechanism comprises a first dust removal unit and a second dust removal unit. The detection device comprises an information acquisition unit, a threshold unit, a color analysis unit, and a central control unit. The color analysis unit analyzes the color difference in the image. The color difference is compared with the threshold value provided by the threshold unit to obtain a comparison result.

2. The molding apparatus for producing a powder metallurgy part according to claim 1, wherein If the color difference is greater than the threshold value, the first dust removal unit is used for dust removal.

3. A molding apparatus for powder metallurgy part production as recited in claim 2, wherein If the color difference is less than the threshold value, the first dust removal unit does not perform dust removal. The comparison result is compared with historical data to determine whether they are similar. If they are similar, manual inspection is performed to determine whether the equipment has a fault. The feeding disc comprises a bottom plate, a cylinder, and a baffle. The cylinder is slidably connected to the bottom plate. The baffle is rotatably connected to the bottom plate. The bottom plate is slidably connected to the slide rail through the connecting member. The cylinder is provided with a vibrator. The cylinder is a transparent cylinder. The vibrator is in communication connection with the central control unit. The information acquisition unit is also used to acquire the image of the transparent cylinder. When it is detected that there is excess material in the transparent cylinder, the central control unit controls the vibrator to vibrate. After the vibration of the vibrator is completed, the color analysis unit verifies the image of the transparent cylinder to analyze whether there is excess material remaining in the transparent cylinder. If there is excess material remaining, secondary circulation is performed. After the secondary circulation is completed, verification is performed again. If there is excess material remaining, tertiary circulation is performed or an alarm signal is sent.

4. The molding apparatus for powder metallurgy part production as recited in claim 3, wherein A connecting block is arranged between the piston rod of the second telescopic cylinder and the lower die punch; the connecting block is rotationally connected with the lower die punch, and the rotation axis is located on the side of the lower die punch close to the conveying mechanism; a connecting groove is formed on the side of the connecting block close to the conveying mechanism; a reset member connecting the connecting groove and the lower die punch is installed in the connecting groove; When the piston rod of the second telescopic cylinder is retracted, the lower die punch rotates towards the conveying mechanism; when the piston rod of the second telescopic cylinder is extended, the lower die punch is restored to the original position by its own gravity and the elastic force of the reset member.

5. The forming device for producing a powder metallurgy part according to claim 4, characterized in that The tilt assembly is composed of a mounting seat, a protruding block, an elastic member and a micro switch; the protruding block is composed of a protruding part, a recessed part and a connecting part; the protruding block is movably installed in the mounting seat, and the protruding part protrudes out of the mounting seat; the connecting part is connected with the mounting seat through the elastic member; the recessed part is connected with the micro switch when being pressed down; When the lower die punch presses down the protruding part, the recessed part presses down the micro switch, and the micro switch feeds back a first signal to the detection device; when the lower die punch rises, the elastic member drives the protruding block to reset, the recessed part is separated from the micro switch, and the micro switch feeds back a second signal to the detection device; The bottom of the lower die punch is provided with a first inclined surface, the connecting block is provided with a second inclined surface, and a groove is arranged on the side close to the second inclined surface and the first inclined surface; the top of the protruding part is provided with a third inclined surface matched with the first inclined surface; when the lower die punch moves downward, the third inclined surface first slides along the first inclined surface, and then slides along the second inclined surface; when sliding to the end of the second inclined surface, the protruding block is clamped into the groove.

6. A molding apparatus for powder metallurgy part production as recited in claim 5, wherein The information acquisition unit is installed at the dust collection end of the first dust removal unit; the first dust removal unit is connected with the second telescopic cylinder through a transmission assembly; The transmission assembly comprises a first connecting rod rotationally connected with the lower die punch, a second connecting rod connecting the first connecting rod and the dust collection end, a limiting member installed on the sides of the first connecting rod and the second connecting rod away from each other, and an adjusting member adjusting the included angle between the first connecting rod and the second connecting rod; the dust collection end is rotationally connected with the second connecting rod; the first connecting rod and the second connecting rod are rotationally connected through the adjusting member; When the lower die punch descends, the transmission assembly drives the first dust removal unit to rotate into the space between the lower die punch and the forming cavity.

7. A forming apparatus for the production of powder metallurgical parts according to any one of claims 6, characterized in that, The specific analysis manner of the color analysis unit is: setting a specific color in the image as a background color and setting a powder color as a pre-warning color; dividing the color interval in the image into a background color interval alpha and a pre-warning color interval beta; setting a center point of the image as a coordinate origin and merging the image with a coordinate system; defining positions of each end point of the background color interval alpha and the pre-warning color interval beta respectively, defining each end point of the background color interval as Palpha (Xn, Yn), and defining each end point of the pre-warning color interval beta as Pbeta (Xn, Yn), wherein n represents different end points; calculating an area Sbeta of the pre-warning color interval beta and calculating an area Salpha of the background color interval alpha; setting a proportion as BL, comparing the calculated proportion BL with a threshold value theta bl, and if BL>theta bl, a dust removal mechanism needs to be used for dust removal; comparing the analysis result with historical analysis data to determine whether the comparison result is similar to the historical analysis result; if there is a similarity, manually checking to determine whether the equipment has a fault.

8. A molding apparatus for producing a powder metallurgy part according to claim 7, wherein The specific comparison with the historical analysis data is: comparing Sβ of the early warning color interval with the area Sβ1 of the last measured early warning color interval in the historical data; calculating the proportion bl of the same position area Sβ, and setting ; if 0.7 < bl < 1, it is determined to be similar, if bl = 1, it is determined to be the same; if bl > 0.7, the interval range is limited, and the proportion bl1 of the early warning color interval area Sβ1 of the same position and the area Sβ2 of the early warning color interval measured last time is verified again; if bl1 ≥ 0.9, it is determined that there is similarity or sameness, a fault signal is sent, and manual checking is reminded.

9. A molding apparatus for producing a powder metallurgy part according to claim 8, wherein The second connecting rod is provided with a forward and reverse motor at one end away from the first connecting rod, and the output of the forward and reverse motor is connected to the dust suction end through a connecting buckle; When the detection device receives a first signal, the central control unit controls the forward and reverse motor to drive the dust suction end to rotate, controls the information acquisition unit to acquire an image, and controls the first dust removal unit to suck dust according to the comparison result.

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