High-toughness valve seat iron-based powder metallurgy equipment

Abstract

The invention discloses high-toughness valve seat iron-based powder metallurgy equipment, and belongs to the field of powder metallurgy, the high-toughness valve seat iron-based powder metallurgy equipment comprises an equipment main body, a pressing device is fixedly mounted on the equipment main body, a rack rod is fixedly mounted at the lower end of the pressing device, and a placing assembly is arranged in the equipment main body; the placing assembly comprises a fixing groove formed in the equipment main body, a force transmission assembly is arranged on the fixing groove, a groove body communicated with the fixing groove is formed in the equipment main body, and an annular groove communicated with the groove body is formed in the equipment main body. The distribution uniformity of mixed powder in the blank making groove can be improved through knocking vibration, and the knocking force on the blank making groove can be gradually reduced along with the increase of the powder, so that the quality of a valve seat green body obtained through pressing by equipment can be improved, and meanwhile, through the mode of combining air blowing cooling and knocking vibration, the production efficiency is improved. The separation smoothness of the valve seat green body and the blank making groove can be improved, and the quality of the valve seat green body pressed by equipment is further improved.

Description

Technical Field

[0001] The invention relates to the field of powder metallurgy, and more specifically to an iron-based powder metallurgy device for a high-toughness valve seat. Background Art

[0002] The valve seat is one of the important components of the engine. At present, in order to increase the service life of the valve seat in a high temperature, high pressure and high friction environment for a long time, powder metallurgy technology is usually used to produce it. In order to further improve the quality and performance of the valve seat made by the equipment, the powder metallurgy process usually includes multiple steps such as powder mixing, pressing, sintering and post-processing. The sequential coordination of these steps can help improve the quality of the valve seat finally made by the equipment; However, in the process of pressing the mixed powder into the valve seat green body by the existing pressing equipment, the overall density of the pressed valve seat green body is easily uneven due to factors such as uneven filling of the powder into the mold, thereby reducing the quality of the valve seat green body pressed by the equipment; Therefore, an iron-based powder metallurgy equipment for high-toughness valve seats is proposed. Summary of the invention

[0003] In view of the problems existing in the prior art, the object of the present invention is to provide a powder metallurgy device capable of improving the quality of a valve seat green body obtained by pressing the device.

[0004] To solve the above problems, the present invention adopts the following technical solutions.

[0005] A high-toughness valve seat iron-based powder metallurgy equipment, comprising an equipment body, a suppressor is fixedly mounted on the equipment body, a rack rod is fixedly mounted on the lower end of the suppressor, and a placement component is arranged in the equipment body; The placement component includes a fixed groove provided in the device body, a force transmission component is provided on the fixed groove, a groove body connected to the fixed groove is provided in the device body, an annular groove connected to the groove body is provided in the device body, and a knocking component is provided on the annular groove; The force transmission component comprises a positioning plate fixedly mounted on the fixing groove, a rotating shaft is passed through the positioning plate and rotatably mounted, a supporting plate is fixedly mounted on the rotating shaft, a connecting plate is fixedly mounted on the supporting plate, two connecting plates are provided, and a pressure regulating component is commonly arranged between the two connecting plates; The knocking assembly includes a disc fixedly mounted between two connecting plates, and the disc is rotatably mounted on an annular groove, a first arc-shaped rack evenly distributed in an annular shape is fixedly mounted on the annular groove, a second arc-shaped rack evenly distributed in an annular shape is fixedly mounted on the annular groove, and a knocking mechanism is mounted on the disc.

[0006] Furthermore, the knocking mechanism includes a plurality of slide grooves provided on the disc, each of the slide grooves is fixedly mounted with a return spring, each of the return springs is fixedly mounted with a sliding block at one end, and each of the sliding blocks is slidably mounted on the corresponding slide groove; A limit box is fixedly installed between the corresponding two sliding blocks, a support frame is penetrated and slidably installed on the limit box, a knocking roller is fixedly installed on the support frame, an airbag is fixedly installed on the inner wall of the limit box, and a traction component is installed between the limit boxes.

[0007] Furthermore, the traction component includes a transmission rod installed at the lower end of the disc in a ring shape and rotates evenly, a traction rope is wound around the transmission rod, and one end of the traction rope is fixedly installed on the corresponding limit box, and a parallel axis gear is fixedly installed on the transmission rod.

[0008] Furthermore, a limiting groove is provided on the main body of the equipment, and the limiting groove is communicated with the groove body and the fixed groove, a rotating shaft is rotatably installed on the limiting groove, a rotating gear meshing with the rack rod is fixedly installed on the rotating shaft, a rotating rod is rotatably installed on the limiting groove, rotating wheels are fixedly installed on the rotating shaft and the rotating rod, a conveyor belt is jointly sleeved and installed between the two rotating wheels, a bevel gear 1 is fixedly installed on the rotating rod, a bevel gear 2 meshing with the bevel gear 1 is fixedly installed on the rotating shaft, and an air suction component is installed at the lower end of the rotating shaft.

[0009] Furthermore, the air suction component includes a one-way air suction pipe fixedly mounted on a fixed groove, a straight plate is fixedly mounted on the fixed groove, a shaft is passed through and rotatably mounted on the straight plate, a fan is fixedly mounted on the shaft, and two fans are provided; A gear cylinder is installed at the lower end of the rotating shaft through a one-way bearing, and a spur gear meshing with the gear cylinder is fixedly installed on the shaft.

[0010] Furthermore, the pressure regulating assembly includes a limiting rod fixedly mounted on the limiting groove, a push frame fixedly mounted on the upper end of the limiting rod, and the push frame is fixedly connected to the rack rod, and a sliding disk cooperating with the push frame is slidably mounted between the two connecting plates; A gas collecting cylinder is fixedly installed at the lower end of the limit box, a one-way air intake pipe is fixedly connected between the gas collecting cylinder and the corresponding air bag, a one-way exhaust pipe is fixedly connected between the gas collecting cylinder and the corresponding air bag, a piston is sealingly and slidably installed in the gas collecting cylinder, a push rod is fixedly installed at the lower end of the piston, and the lower end of the push rod penetrates and is slidably installed on the sliding disk.

[0011] Furthermore, an exhaust assembly is provided on the rotating shaft, and the exhaust assembly includes an air collecting groove opened in the main body of the equipment, and the air collecting groove is connected with the fixed groove and the groove body, and a blocking plate matched with the air collecting groove is fixedly installed between the two connecting plates, and a partition is fixedly installed at the lower end of the blocking plate, and a one-way air inlet pipe is sealed and fixedly installed on the partition, and two one-way air inlet pipes are provided; The sealing disk is sealed with one-way air pipes that are evenly distributed in a ring shape and fixedly installed, and the upper ends of the one-way air pipes are all penetrated and fixedly installed at the lower end of the disk. The one-way air pipes and the corresponding knocking rollers are fixedly connected with connecting pipes, and an extrusion component is installed on the air gathering trough.

[0012] Furthermore, the extrusion component includes a reciprocating screw installed on the upper end of the rotating shaft through a one-way bearing, and the upper end of the reciprocating screw is rotatably connected to the wind gathering groove. A sealing disk is installed on the reciprocating screw through a ball nut, and the sealing disk is sealingly slidably installed on the wind gathering groove.

[0013] Furthermore, a blank making component is provided on the equipment body, and the blank making component includes a blank making groove opened on the equipment body, and an electric telescopic rod is fixedly installed on the blank making groove. The electric telescopic rods are provided with two, and a core rod is fixedly installed on the blank making groove. A carrying plate is fixedly installed between the two electric telescopic rods, and the carrying plate is sealingly slidably installed between the blank making groove and the core rod.

[0014] Furthermore, the disc is provided with an adjustment component, the adjustment component includes an air suction device fixedly mounted on the upper end of the disc, the air suction device is fixedly connected with an annular tube 1, and a one-way air suction tube 2 is fixedly connected between the airbag and the annular tube 1; An air supply device is fixedly installed on the upper end of the disc, and an annular tube 2 is fixedly connected to the air supply device, and both annular tube 1 and annular tube 2 are fixedly connected to the disc, and a one-way air supply pipe 2 is fixedly connected between the airbag and the annular tube 2, and both the one-way suction pipe 2 and the one-way air supply pipe 2 pass through and are fixedly installed on the corresponding limit box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) In the process of filling the mixed powder into the blank making groove of the equipment, the present scheme can drive multiple knocking rollers to intermittently knock and vibrate the outer groove wall of the blank making groove through the cooperation of the rack rod, the force input component and the knocking component, which can help to improve the uniformity of the distribution of the mixed powder inside the blank making groove, improve the uniformity of the overall density of the valve seat blank obtained by the subsequent pressing of the equipment, and improve the quality of the valve seat blank made by the equipment. At the same time, through the pressure regulating component, when the mixed powder inside the blank making groove gradually increases, the knocking force of the multiple knocking rollers on the outer groove wall of the blank making groove can be gradually reduced, which can help to ensure the quality of the valve seat blank formed by the subsequent pressing of the equipment; (2) Before the equipment ejects the valve seat blank from the inside of the blank making groove, the present solution can increase the gap between the valve seat blank and the blank making groove by blowing air to cool the outer groove wall of the blank making groove through the cooperation of the air suction component and the exhaust component, which helps to improve the smoothness of the subsequent separation of the valve seat blank and the blank making groove. At the same time, the continuous tapping and vibration of the outer groove wall of the blank making groove by multiple tapping rollers can further improve the smoothness of the separation of the valve seat blank and the blank making groove, which helps to further improve the quality of the valve seat blank obtained by pressing the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall front structure of the present invention; Figure 2 for Figure 1 A schematic cross-sectional view of the main body of the device; Figure 3 for Figure 2 A schematic diagram of the structure in which components are placed; Figure 4 for Figure 2 The schematic diagram of the structure of the blank making component; Figure 5 for Figure 2 A schematic diagram of the structure of the internal components of the device body; Figure 6 for Figure 5 A schematic diagram of the structure of the middle power transmission component; Figure 7 for Figure 6 A schematic diagram of the structure of the components at the lower end of the middle rotating shaft; Figure 8 for Figure 7 A schematic diagram of the structure of the air intake component; Fig. 9 for Figure 5 A schematic diagram of the structure of the middle striking component; Fig.10 for Fig. 9 A schematic top view of the middle disc after sectioning; Fig.11 for Fig.10 The structural diagram of the middle striking mechanism; Fig.12 for Figure 5 Structural diagram of the middle voltage regulating assembly; Fig.13 for Fig.12 A schematic cross-sectional view of the middle gas collecting cylinder; Fig.14 for Figure 5 A schematic diagram of the structure of the exhaust assembly; Fig.15 for Fig.14 A schematic cross-sectional view of the middle sealing disk and the partition; Fig.16 for Fig. 9 Schematic diagram of the structure of the regulating component.

[0017] Description of the numbers in the figure: 1. Equipment body; 2. Suppressor; 3. Rack rod; 4. Blank making assembly; 41. Blank making groove; 42. Mandrel; 43. Electric telescopic rod; 44. Carrying plate; 5. Placement components; 51. Fixing slot; 52. Slot body; 53. Wind collecting slot; 54. Annular slot; 55. Limiting slot; 6. Power transmission component; 61. Rotating shaft; 62. Rotating rod; 63. Conveyor belt; 64. Rotating gear; 65. Rotating shaft; 66. Support plate; 67. Connecting plate; 68. Positioning plate; 69. One-way air suction pipe; 610. One-way bearing 1; 611. Gear cylinder; 612. Shaft; 613. Spur gear; 614. Fan; 7. knocking assembly; 71. disc; 72. arc-shaped rack 1; 73. slideway; 74. sliding block; 75. return spring; 76. limit box; 77. airbag; 78. support frame; 79. knocking roller; 710. transmission rod; 711. traction rope; 712. parallel shaft gear; 713. arc-shaped rack 2; 8. Pressure regulating assembly; 81. Sliding plate; 82. Limit rod; 83. Push frame; 84. Push rod; 85. Gas collecting cylinder; 86. Piston; 87. One-way air intake pipe 1; 88. One-way air exhaust pipe 1; 9. Exhaust assembly; 91. Reciprocating screw rod; 92. Sealing disk; 93. Blocking disk; 94. Partition plate; 95. One-way air pipe; 96. Connecting pipe; 97. One-way air inlet pipe; 10. Adjustment component; 101. Air intake device; 102. Annular pipe one; 103. One-way air intake pipe two; 104. Air supply device; 105. Annular pipe two; 106. One-way air supply pipe two. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 16 A high-toughness valve seat iron-based powder metallurgy equipment includes an equipment body 1, a suppressor 2 is fixedly installed on the equipment body 1, a rack rod 3 is fixedly installed at the lower end of the suppressor 2, and a placement component 5 is arranged in the equipment body 1.

[0020] like Figure 1 - Figure 4 As shown, a blank making component 4 is provided on the equipment body 1, and the blank making component 4 includes a blank making groove 41 opened on the equipment body 1, and an electric telescopic rod 43 is fixedly installed on the blank making groove 41. There are two electric telescopic rods 43, and a core rod 42 is fixedly installed on the blank making groove 41. A supporting plate 44 is fixedly installed between the two electric telescopic rods 43, and the supporting plate 44 is sealed and slidably installed between the blank making groove 41 and the core rod 42.

[0021] The main body 1 of the equipment is equipped with an existing feeding device (not shown in the figure but not marked). Figure 1 As can be seen in the figure, when it is running, by intermittently inputting a certain amount of mixed powder (the powder is usually composed of high-toughness iron powder mixed with powder of alloy elements, lubricant, binder, etc.) into the blank making groove 41, and cooperating with the intermittent downward pressing of the press 2, the equipment can achieve the effect of continuously making valve seat blanks. The working principle and internal components of the press 2 are all existing mature technologies and will not be further elaborated here.

[0022] like Figure 1 - Figure 6 As shown, the placement component 5 includes a fixed groove 51 opened in the equipment body 1, a force input component 6 is arranged on the fixed groove 51, a groove body 52 connected to the fixed groove 51 is opened in the equipment body 1, an annular groove 54 connected to the groove body 52 is opened in the equipment body 1, and a knocking component 7 is arranged on the annular groove 54.

[0023] The force transmission component 6 includes a positioning plate 68 fixedly installed on the fixing groove 51, a rotating shaft 65 passes through the positioning plate 68 and is rotatably installed, a supporting plate 66 is fixedly installed on the rotating shaft 65, a connecting plate 67 is fixedly installed on the supporting plate 66, two connecting plates 67 are provided, and a pressure regulating component 8 is arranged between the two connecting plates 67.

[0024] A limiting groove 55 is provided on the equipment body 1, and the limiting groove 55 is connected with the groove body 52 and the fixed groove 51, a rotating shaft 61 is rotatably installed on the limiting groove 55, a rotating gear 64 meshing with the rack rod 3 is fixedly installed on the rotating shaft 61, a rotating rod 62 is rotatably installed on the limiting groove 55, rotating wheels are fixedly installed on the rotating shaft 61 and the rotating rod 62, a conveyor belt 63 is installed between the two rotating wheels, a bevel gear 1 is fixedly installed on the rotating rod 62, a bevel gear 2 meshing with the bevel gear 1 is fixedly installed on the rotating shaft 65, and an air suction component is installed at the lower end of the rotating shaft 65.

[0025] When the existing feeding device starts to feed a certain amount of mixed powder into the blank making groove 41 and the upper end of the carrier plate 44, the pressing device 2 is started (the pressing device 2 is set to move downward at a relatively slow speed to ensure that the pressing device 2 gradually moves downward when the existing feeding device continues to feed the material into the blank making groove 41). At this time, the operation of the pressing device 2 will drive the rack rod 3 to move downward (such as Figure 6 When the rack rod 3 moves downward, the rotating shaft 65 is driven to rotate counterclockwise (as shown in the direction shown in the figure) by cooperating with the rotating gear 64, the rotating shaft 61, the conveyor belt 63, the rotating rod 62, the bevel gear 1, and the bevel gear 2. Figure 6 direction shown).

[0026] like Figure 4 - Figure 6 , Fig. 9 - Fig.11 As shown, the knocking assembly 7 includes a disc 71 fixedly mounted between two connecting plates 67, and the disc 71 is rotatably mounted on the annular groove 54, an arc-shaped rack 1 72 evenly distributed in an annular shape is fixedly mounted on the annular groove 54, an arc-shaped rack 2 713 evenly distributed in an annular shape is fixedly mounted on the annular groove 54, and a knocking mechanism is mounted on the disc 71.

[0027] The knocking mechanism includes a plurality of slide grooves 73 provided on the disc 71, and a return spring 75 is fixedly installed on each of the slide grooves 73. A sliding block 74 is fixedly installed on one end of each of the return springs 75, and each of the sliding blocks 74 is slidably installed on the corresponding slide grooves 73. A limit box 76 is fixedly installed between the corresponding two sliding blocks 74, a support frame 78 is penetrated and slidably installed on the limit box 76, a knocking roller 79 is fixedly installed on the support frame 78, an air bag 77 is fixedly installed on the inner wall of the limit box 76, and a traction component is installed between the limit boxes 76.

[0028] The traction component includes a transmission rod 710 installed at the lower end of the disc 71 in a ring shape and rotates evenly. A traction rope 711 is wound around the transmission rod 710, and one end of the traction rope 711 is fixedly installed on the corresponding limit box 76. A parallel axis gear 712 is fixedly installed on the transmission rod 710.

[0029] like Fig.11 In the direction shown, the right end of the airbag 77 is fixedly connected to the right inner wall of the corresponding limit box 76, and other parts of the airbag 77 can be displaced relative to the corresponding limit box 76 under force. The purpose is to ensure that when the airbag 77 is subsequently compressed and elastically deformed, it can be displaced relative to the corresponding limit box 76.

[0030] When the rack bar 3 is forced to move downward and drive the rotating shaft 65 to rotate counterclockwise, the rotating shaft 65 will cooperate with the two connecting plates 67 through the supporting plate 66 to drive the disc 71 to rotate together. In the process of the disc 71 driving the multiple transmission rods 710 and the multiple knocking rollers 79 to rotate counterclockwise, the multiple arc-shaped racks 1 72 and the arc-shaped racks 2 713 cooperate (combined) to rotate together. Fig. 9 and Fig.11 It can be seen that the arc-shaped rack 1 72 and the arc-shaped rack 2 713 are arranged alternately, and the arc-shaped rack 1 72 and the arc-shaped rack 2 713 are respectively located on both sides of the parallel axis gear 712, so that the parallel axis gear 712 can intermittently rotate counterclockwise and intermittently rotate clockwise during the force rotation process), and the transmission rod 710 can be driven to intermittently rotate to reel in and release the traction rope 711; During the rotation of the transmission rod 710, the force is applied to rotate clockwise (such as Fig.11 As shown in the direction, when the corresponding traction rope 711 is rolled up, the traction rope 711 will generate a pulling force to the right on the corresponding limit box 76 (as shown in the direction of Fig.11 As shown in the direction, the limit box 76 drives the corresponding support frame 78 and the knocking roller 79 to move to the right, and when the transmission rod 710 is forced to rotate counterclockwise and release the corresponding traction rope 711, the limit box 76 can be driven by the elastic force of the two corresponding reset springs 75 to drive the corresponding knocking roller 79 to move and reset, and the outer groove wall of the blank making groove 41 (i.e., as shown in the direction shown in the direction), the limit box 76 drives the corresponding support frame 78 and the knocking roller 79 to move to the right, and the outer groove wall of the blank making groove 41 (i.e., as shown in the direction ... Figure 4 As shown, the portion of the equipment body 1 between the isolated blank making groove 41 and the annular groove 54 is knocked and vibrated, and then the disc 71 drives multiple transmission rods 710 and multiple knocking rollers 79 to continuously rotate, so that the effect of intermittent knocking and vibration of the outer groove wall of the blank making groove 41 can be achieved.

[0031] In the process of filling the mixed powder into the blank making groove 41 through the existing feeding equipment, it is easy to cause uneven powder filling, poor powder flow in the blank making groove 41 and other factors, which will lead to uneven density of the airtight seat green body finally pressed by the equipment, and there will be many pores inside the green body, thereby reducing the quality of the valve seat green body. In the process of the existing feeding equipment inputting the mixed powder into the blank making groove 41, the outer groove wall of the blank making groove 41 is intermittently knocked and vibrated by multiple knocking rollers 79, which can effectively improve the uniformity of the distribution of the mixed powder inside the blank making groove 41, that is, it helps to improve the uniformity of the overall density of the valve seat green body obtained by subsequent pressing of the equipment, and at the same time can effectively reduce the overall pores of the green body, which helps to improve the quality of the valve seat green body.

[0032] like Fig. 9 - Fig.13As shown, the pressure regulating assembly 8 includes a limiting rod 82 fixedly mounted on the limiting groove 55, a push frame 83 is fixedly mounted on the upper end of the limiting rod 82, and the push frame 83 is fixedly connected to the rack rod 3, and a sliding plate 81 cooperating with the push frame 83 is slidably mounted between the two connecting plates 67; An air collecting cylinder 85 is fixedly installed at the lower end of the limit box 76, a one-way air intake pipe 87 is fixedly connected between the air collecting cylinder 85 and the corresponding air bag 77, a one-way exhaust pipe 88 is fixedly connected between the air collecting cylinder 85 and the corresponding air bag 77, a piston 86 is sealingly and slidably installed in the air collecting cylinder 85, a push rod 84 is fixedly installed at the lower end of the piston 86, and the lower end of the push rod 84 passes through and is slidably installed on the sliding plate 81.

[0033] In the initial state, the interiors of the multiple airbags 77 are all filled with gas (the initial gas volume, i.e., the air pressure intensity, inside the multiple airbags 77 can be adjusted by the adjusting component 10 according to the type of mixed powder selected by the equipment). At this time, the corresponding transmission rod 710, the traction rope 711 and the two reset springs 75 cooperate to drive the limit box 76 to drive the corresponding knocking roller 79 to intermittently knock on the outer groove wall of the blank making groove 41, and the generated vibration force is the maximum value. Since the amount of gas inside the airbag 77 is large at this time, it is difficult to be compressed and deformed, that is, the elastic deformation force of the airbag 77 is relatively low at this time. Therefore, most of the vibration force generated by the knocking roller 79 moving to knock on the outer wall edge of the blank making groove 41 will be directly transmitted to the mixed powder inside it.

[0034] When the feeding equipment starts to input the mixed powder into the blank making trough 41, the rack rod 3 moves downward and starts to drive multiple knocking rollers 79 to intermittently knock on the outer trough wall of the blank making trough 41. At this time, the larger knocking vibration force can help to achieve the uniformity of the initial dispersion of the mixed powder in the blank making trough 41. That is, since there is less mixed powder in the blank making trough 41 initially, the larger vibration force can help to fully move a small amount of mixed powder in a larger space, which helps to reduce the local accumulation of mixed powder, that is, it helps to improve the uniformity of the distribution of the mixed powder in the blank making trough 41.

[0035] At the same time, the rack rod 3 drives the push frame 83 to continue to move downward (through the limit rod 82 that can be compressed and stretched, the stability of the push frame 83 during the downward or upward movement can be effectively improved), and the upper end of the push frame 83 contacts the upper end of the sliding plate 81 and presses the sliding plate 81 to move downward together (such as Fig.12 When the multiple pistons 86 are forced to move downward, the gas inside the corresponding airbags 77 will be gradually sucked into the corresponding gas collecting cylinder 85 for buffering through the corresponding one-way suction pipe 87. That is, the continuous force on the rack rod 3 at this time will gradually reduce the amount of gas inside the multiple airbags 77.

[0036] When the amount of gas inside the airbag 77 gradually decreases, that is, when the degree of compression deformation of the airbag 77 gradually increases, the vibration force generated by the disc 71 driving the multiple knocking rollers 79 to intermittently knock on the outer groove wall of the blank making groove 41 will gradually decrease. That is, when the knocking rollers 79 are forced to knock on the outer groove wall of the blank making groove 41, the reaction force generated by the blank making groove 41 on the knocking rollers 79 will cause the knocking rollers 79 to move in the opposite direction to compress the corresponding airbag 77, and the airbag 77 will absorb a large amount of energy when being compressed (when the compression force of the knocking rollers 79 on the airbag 77 through the corresponding support frame 78 disappears or weakens, the compressed gas inside the airbag 77 will prompt the airbag 77 to rebound and reset). Therefore, when the amount of gas inside the airbag 77 gradually decreases, the vibration force generated by the knocking rollers 79 knocking on the outer groove wall of the blank making groove 41 will also gradually decrease accordingly; As the amount of powder inside the blank making groove 41 gradually increases, the vibration force generated by the multiple knocking rollers 79 knocking on the outer groove wall of the blank making groove 41 can be gradually reduced, so that the damage to the preliminary formed powder structure can be effectively reduced. At this time, if a large knocking vibration force is continuously used, it is easy to cause stratification or uneven density of the upper and lower layers of powder inside the blank making groove 41. Therefore, the amount of mixed powder inside the blank making groove 41 gradually increases. By gradually reducing the knocking force, the mixed powder can be gradually and stably accumulated inside the blank making groove 41, which helps to further improve the quality of the valve seat blank obtained by subsequent pressing of the equipment.

[0037] At the same time, when the lower end of the suppressor 2 is in contact with the upper end of the existing feeding device (such as Figure 1 In the direction shown), first stop the operation of the press 2 and drive the feeding equipment to move and reset, and when the press 2 drives the rack rod 3 to continue to move downward, the lower end of the press 2 is flush with the upper end of the blank making groove 41, at this time the rack rod 3 stops driving the rotating gear 64, that is, the subsequent downward movement of the rack rod 3 will not drive multiple knocking rollers 79 to knock and vibrate the outer groove wall of the blank making groove 41. The purpose is to ensure the stability of the mixed powder accumulation when the press 2 moves downward to press the mixed powder inside the blank making groove 41, which helps to further ensure the quality of the valve seat blank obtained by pressing the equipment.

[0038] At the same time, the purpose of setting multiple push rods 84 with their lower ends penetrating and slidably mounted on the sliding plate 81 is to facilitate the corresponding airbags 77, knocking rollers 79, gas cylinders 85, and pistons 86 to move back and forth when the limit box 76 is driven by force (such as Fig.13 direction shown), and moves with it.

[0039] like Figure 4 - Figure 8As shown, the air suction component includes a one-way air suction pipe 69 fixedly mounted on the fixed groove 51, a straight plate is fixedly mounted on the fixed groove 51, a shaft 612 is passed through and rotatably mounted on the straight plate, a fan 614 is fixedly mounted on the shaft 612, and two fans 614 are provided; A gear cylinder 611 is installed at the lower end of the rotating shaft 65 through a one-way bearing 610 , and a spur gear 613 meshing with the gear cylinder 611 is fixedly installed on the shaft 612 .

[0040] When the rack rod 3 starts to move downward, the driving shaft 65 drives the disc 71 and multiple knocking rollers 79 to rotate counterclockwise. At this time, the shaft 65 drives the gear barrel 611 to rotate together through the one-way bearing 1 610 (at this time, the one-way bearing 2 is in a rotating state and will not rotate). The rotation of the gear barrel 611 will drive the two fans 614 to rotate through the cooperation with the spur gear 613 and the shaft 612, and the external gas will be sucked into the fixed groove 51 through the one-way suction pipe 69.

[0041] At the same time, from Figure 8 It can be seen that the number of teeth on the gear cylinder 611 is much larger than the number of teeth on the spur gear 613, that is, when the gear cylinder 611 is forced to rotate one circle, it can drive the two fans 614 to rotate multiple times, thereby effectively increasing the amount of gas sucked into the fixed groove 51 by the two fans 614, which helps to improve the subsequent cooling effect of blowing air to the outer groove wall of the blank making groove 41 through the exhaust component 9.

[0042] like Figure 4 - Figure 8 , Fig.14 - Fig.15 As shown, an exhaust assembly 9 is provided on the rotating shaft 65, and the exhaust assembly 9 includes an air collecting groove 53 provided in the equipment body 1, and the air collecting groove 53 is connected with the fixed groove 51 and the groove body 52, and a blocking plate 93 matching with the air collecting groove 53 is fixedly installed between the two connecting plates 67, and a partition plate 94 is fixedly installed at the lower end of the blocking plate 93, and a one-way air inlet pipe 97 is sealed and fixedly installed on the partition plate 94, and two one-way air inlet pipes 97 are provided; A one-way air pipe 95 evenly distributed in a ring shape is sealed and fixedly installed on the sealing disk 93, and the upper ends of the one-way air pipes 95 are all penetrated and fixedly installed on the lower end of the disc 71, and a connecting pipe 96 is fixedly connected between the one-way air pipes 95 and the corresponding knocking rollers 79, and an extrusion component is installed on the wind gathering groove 53.

[0043] The extrusion component includes a reciprocating screw 91 installed on the upper end of the rotating shaft 65 through a one-way bearing, and the upper end of the reciprocating screw 91 is rotatably connected to the wind gathering groove 53. A sealing disk 92 is installed on the reciprocating screw 91 through a ball nut, and the sealing disk 92 is sealed and slidably installed on the wind gathering groove 53.

[0044] The support plate 66 can be used to block the upper end of the fixed groove 51, and the blocking plate 93 cooperates with the partition plate 94 to block the lower end of the wind collecting groove 53 (such as Figure 4 The partition plate 94 and the support plate 66 are sealed to ensure that when the two fans 614 cooperate to suck the external air into the fixed groove 51, the air will enter the internal buffer of the wind collecting groove 53 through the two one-way air inlet pipes 97 (from the Figure 6 It can be seen that the middle part of the support plate 66 is hollowed out and will not hinder the flow of gas).

[0045] After the pressing device 2 moves downward to press the mixed powder in the blank making groove 41 into a valve seat blank, the pressing device 2 drives the rack rod 3 to move upward and reset, and drives the rotating shaft 65 to rotate clockwise. At this time, through the one-way bearing 2 (the one-way bearing 1 610 is in a rotatable state at this time and will not rotate, that is, the two fans 614 stop rotating to absorb air at this time), the reciprocating screw rod 91 can be driven to rotate together with it; When the reciprocating screw rod 91 is rotated by force, the sealing plate 92 can be driven to move downward by the ball nut (the initial position of the sealing plate 92 is set to be located at the upper end of the reciprocating screw rod 91, such as Fig.14 As shown in FIG. 1 ), the buffered gas in the air collecting groove 53 is squeezed into the multiple one-way air delivery pipes 95, so that the gas flows into the corresponding knocking rollers 79 along the multiple one-way air delivery pipes 95 and the multiple connecting pipes 96, and finally blown out from the multiple round holes opened on the multiple knocking rollers 79 (from Fig.14 As can be seen in the figure, a plurality of circular holes are provided on the knocking roller 79 to blow air and cool the outer wall of the blank making groove 41.

[0046] When the mixed powder is pressed and formed, the powder particles will squeeze and slide against each other, and part of the friction force generated in this process will be converted into heat energy, which will easily lead to a higher temperature of the pressed valve seat blank. The wall of the blank making groove 41 for holding the mixed powder is usually made of metal material and has thermal conductivity. Therefore, as the temperature of the blank increases, the wall of the blank making groove 41 will also be affected by thermal expansion and contraction and expand, resulting in a gradual decrease in the gap between the valve seat blank and the blank making groove 41, which will easily increase the degree of wear of the blank by the wall of the blank making groove 41 when the valve seat blank is subsequently removed from the inside of the blank making groove 41, that is, it will easily increase the risk of wear on the surface of the valve seat blank and reduce the quality of the valve seat blank. By blowing air to the outer wall of the blank making groove 41 for cooling before removing the valve seat blank from the inside of the blank making groove 41, the temperature of the blank making groove 41 and the valve seat blank can be effectively reduced, and the gap between the valve seat blank and the blank making groove 41 can be increased, which can help to reduce the wear of the valve seat blank by the wall of the blank making groove 41, that is, it helps to improve the smoothness of the separation of the valve seat blank and the blank making groove 41, thereby ensuring the quality of the valve seat blank obtained by pressing the equipment.

[0047] At the same time, from Figure 1 It can be seen that two vents connected to the annular groove 54 are provided on the device body 1, the purpose of which is to ensure that when the gas inside the annular groove 54 gradually increases, the excess gas can be discharged through the two vents. At the same time, in order to further ensure the smoothness of the upward and downward movement of the sealing disk 92 under pressure, a square opening (not shown in the figure) is required to be provided on the device body 1, and the square opening is connected to the upper end of the wind gathering groove 53 (i.e., located above the initial position of the sealing disk 92), the purpose of which is to ensure the smoothness of the gas flow at the upper end of the sealing disk 92 when the sealing disk 92 is forced to move up and down. At the same time, a plurality of connecting pipes 96 are provided, and the portion between the corresponding one-way air delivery pipe 95 and the knocking roller 79 is made of elastic material, in order to adapt to the force of the limit box 76 driving the knocking roller 79 to move back and forth (such as Fig.11 In the direction shown), the corresponding connecting pipe 96 is stretched or compressed.

[0048] When the suppressor 2 drives the rack rod 3 to start moving upward and resetting (such as Fig.12 In the direction shown), through the cooperation of the rack rod 3 and the force input component 6, the multiple arc-shaped racks 1 72 and the arc-shaped rack 2 713, the multiple knocking rollers 79 can be driven to continuously knock and vibrate the outer groove wall of the blank making groove 41, so as to further promote the separation of the valve seat green body from the blank making groove 41, and further improve the smoothness of the subsequent separation of the valve seat green body from the blank making groove 41, that is, it helps to further improve the quality of the valve seat green body obtained by pressing the equipment, and at this time, the gas content of the multiple air bags 77 is relatively small, that is, at this time, the vibration force generated by the cooperation of the multiple knocking rollers 79 on the outer groove wall of the blank making groove 41 is relatively small, which can effectively avoid the vibration damage to the valve seat green body structure caused by the large vibration force, and help to ensure that the valve seat green body is separated from the blank making groove 41 by knocking and vibrating the blank making groove 41 at this time.

[0049] Wait for the rack rod 3 to drive the push frame 83 to continue to move upward and reset (such as Fig.12 As shown in the direction, the lower end of the push frame 83 contacts the lower end of the sliding plate 81, and pushes the sliding plate 81 and multiple push rods 84 and multiple pistons 86 to move up and reset, and the gas cached in the gas collecting cylinder 85 is re-extruded into the corresponding air bag 77 through the corresponding one-way exhaust pipe 88, that is, the amount of gas in the air bag 77 gradually increases, and the vibration force generated by the knocking roller 79 knocking on the outer groove wall of the blank making groove 41 gradually increases. In order to further avoid the damage of the valve seat green structure after the pressing and forming by the high vibration force, it is necessary to stop the operation of the press 2 first, and start the two electric telescopic rods 43. The operation of the two electric telescopic rods 43 will push the valve seat green on it out of the blank making groove 41 through the carrying plate 44, and then push the green to the right end of the equipment body 1 (such as Figure 1 The direction shown in the figure) is convenient for workers or existing machinery to collect the valve seat green body after pressing and forming.

[0050] When the existing feeding equipment pushes the pressed valve seat blank to the right end of the equipment body 1 and starts to move toward the upper end of the blank making groove 41, restart the press 2 until the press 2 drives the rack rod 3 to move up and reset, and then repeat the above operation to achieve the effect of continuous production of valve seat blanks.

[0051] At the same time, when the rack rod 3 is moved up and reset, the reciprocating screw rod 91 is forced to drive the sealing plate 92 to move up and down once, so as to ensure the subsequent collection of gas by the wind gathering groove 53 and the squeezing of the internal gas by the sealing plate 92.

[0052] like Fig.11 , Fig.16 As shown, the disc 71 is provided with an adjustment component 10, which includes an air suction device 101 fixedly mounted on the upper end of the disc 71, and the air suction device 101 is fixedly connected with an annular tube 102, and a one-way air suction pipe 2 103 is fixedly connected between the air bag 77 and the annular tube 102; An air supply device 104 is fixedly installed on the upper end of the disc 71, and an annular tube 105 is fixedly connected to the air supply device 104, and the annular tube 102 and the annular tube 105 are both fixedly connected to the disc 71, and a one-way air supply pipe 106 is fixedly connected between the airbag 77 and the annular tube 105, and the one-way suction pipe 103 and the one-way air supply pipe 106 are both passed through and fixedly installed on the corresponding limit box 76.

[0053] Before the equipment starts to make the valve seat blank, the amount of gas inside the airbag 77 can be adjusted according to the type of mixed powder, so that according to the type of mixed powder, the vibration intensity of the multiple knocking rollers 79 knocking on the outer groove wall of the blank making groove 41 can be adjusted. That is, the initial gas content in the airbag 77 can be reduced by cooperating with the suction device 101, the annular tube 102, and the one-way suction pipe 2 103, and the initial gas content in the airbag 77 can be increased by cooperating with the air supply device 104, the annular tube 2 105, and the multiple one-way air supply pipes 2 106, which helps to improve the pressing effect of the equipment on different types of mixed powders.

[0054] The internal components and working principles of the air intake device 101 and the air delivery device 104 are all existing mature technologies and are further explained here.

[0055] Usage: When the device is needed, first fill the mixed powder into the blanking tank 41 through the existing feeding device, and start the compactor 2. The compactor 2 drives the rack rod 3 to move downward (such as Figure 6In the direction shown), through cooperation with the force input component 6, the rotating shaft 65 can be driven through the two connecting plates 67 to drive the disc 71 and the multiple transmission rods 710 and the multiple knocking rollers 79 to rotate. At this time, through the cooperation of the multiple transmission rods 710 and the multiple arc-shaped racks 1 72, the multiple arc-shaped racks 2 713, and the multiple return springs 75, the multiple knocking rollers 79 can be driven to intermittently knock and vibrate the outer groove wall of the blank making groove 41, which can help to improve the uniformity of the distribution of the mixed powder inside the blank making groove 41, and improve the uniformity of the overall density of the valve seat blanks subsequently pressed and formed by the equipment.

[0056] At the same time, in the initial state, the initial gas content inside the multiple air bags 77 can be adjusted according to the type of mixed powder through the adjustment component 10, and in the initial state, the vibration force generated by the multiple knocking rollers 79 knocking on the outer groove wall of the blank making groove 41 is at the maximum value. As the mixed powder inside the blank making groove 41 gradually increases, the rack rod 3 drives the sliding plate 81 to move downward through the pushing frame 83. At this time, through the cooperation of the pressure regulating component 8, the gas content inside the multiple air bags 77 can be gradually reduced, that is, the knocking force of the knocking rollers 79 on the outer groove wall of the blank making groove 41 is gradually reduced, thereby further ensuring the quality of the valve seat blanks obtained by pressing and molding the equipment.

[0057] After the pressing device 2 moves down to press the mixed powder inside the blank making groove 41 into a valve seat blank, the pressing device 2 drives the rack rod 3 to move up and reset. At this time, through the cooperation of the suction component and the extrusion component, the outer groove wall of the blank making groove 41 can be cooled by blowing air through multiple knocking rollers 79, so as to effectively increase the gap between the valve seat blank and the blank making groove 41 and reduce the wear of the groove wall of the blank making groove 41 on the valve seat blank when it is subsequently removed from the blank making groove 41. At the same time, through the continuous cooperation of the rack rod 3 and the knocking assembly 7, that is, the continuous knocking and vibration of the outer groove wall of the blank making groove 41 by multiple knocking rollers 79, the smoothness of the separation of the valve seat blank and the blank making groove 41 can be further improved, which helps to further improve the quality of the valve seat blanks made by the equipment.

[0058] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-toughness valve seat iron-based powder metallurgy equipment, comprising an equipment body, a suppressor is fixedly installed on the equipment body, a rack rod is fixedly installed at the lower end of the suppressor, and a placement component is arranged in the equipment body; Features: The placement component includes a fixed groove provided in the device body, a force transmission component is provided on the fixed groove, a groove body connected to the fixed groove is provided in the device body, an annular groove connected to the groove body is provided in the device body, and a knocking component is provided on the annular groove; The power transmission component includes a positioning plate fixedly mounted on the fixing groove, a rotating shaft is passed through the positioning plate and rotatably mounted, a supporting plate is fixedly mounted on the rotating shaft, a connecting plate is fixedly mounted on the supporting plate, two connecting plates are provided, and a pressure regulating component is commonly arranged between the two connecting plates; The knocking assembly includes a disc fixedly mounted between two connecting plates, and the disc is rotatably mounted on an annular groove, a first arc-shaped rack evenly distributed in an annular shape is fixedly mounted on the annular groove, a second arc-shaped rack evenly distributed in an annular shape is fixedly mounted on the annular groove, and a knocking mechanism is mounted on the disc; The knocking mechanism includes a plurality of slide grooves provided on the disc, on which return springs are fixedly installed, on one end of which a sliding block is fixedly installed, and on which the sliding blocks are slidably installed corresponding to the slide grooves; a limit box is fixedly installed between two corresponding sliding blocks, on which a support frame is penetrated and slidably installed, on which a knocking roller is fixedly installed, on which an air bag is fixedly installed on the inner wall of the limit box, and between which a traction component is installed.

2. The high-toughness iron-based powder metallurgy equipment for valve seats according to claim 1, characterized in that: The traction component includes a transmission rod installed at the lower end of the disc in a ring shape and rotating evenly. A traction rope is wound around the transmission rod, and one end of the traction rope is fixedly installed on the corresponding limit box. A parallel axis gear is fixedly installed on the transmission rod.

3. The high-toughness valve seat iron-based powder metallurgy equipment according to claim 1, characterized in that: A limit slot is provided on the main body of the equipment, and the limit slot is connected with the slot body and the fixed slot, a rotating shaft is rotatably installed on the limit slot, a rotating gear meshing with the rack rod is fixedly installed on the rotating shaft, a rotating rod is rotatably installed on the limit slot, rotating wheels are fixedly installed on the rotating shaft and the rotating rod, a conveyor belt is jointly sleeved and installed between the two rotating wheels, a bevel gear 1 is fixedly installed on the rotating rod, a bevel gear 2 meshing with the bevel gear 1 is fixedly installed on the rotating shaft, and an air suction component is installed at the lower end of the rotating shaft.

4. The high-toughness iron-based powder metallurgy equipment for valve seats according to claim 3, characterized in that: The air suction component comprises a one-way air suction pipe fixedly mounted on a fixed groove, a straight plate fixedly mounted on the fixed groove, a shaft rod passing through the straight plate and rotatably mounted, a fan fixedly mounted on the shaft rod, and two fans are provided; A gear cylinder is installed at the lower end of the rotating shaft through a one-way bearing, and a spur gear meshing with the gear cylinder is fixedly installed on the shaft.

5. The high-toughness valve seat iron-based powder metallurgy equipment according to claim 3, characterized in that: The pressure regulating assembly includes a limit rod fixedly mounted on the limit groove, a push frame fixedly mounted on the upper end of the limit rod, and the push frame is fixedly connected to the rack rod, and a sliding plate matching the push frame is slidably mounted between the two connecting plates; An air collecting cylinder is fixedly installed at the lower end of the limit box, a one-way air intake pipe is fixedly connected between the air collecting cylinder and the corresponding air bag, a one-way exhaust pipe is fixedly connected between the air collecting cylinder and the corresponding air bag, a piston is sealingly and slidably installed in the air collecting cylinder, a push rod is fixedly installed at the lower end of the piston, and the lower end of the push rod penetrates and is slidably installed on the sliding disk.

6. The high-toughness iron-based powder metallurgy equipment for valve seats according to claim 1, characterized in that: An exhaust assembly is arranged on the rotating shaft, and the exhaust assembly includes an air collecting groove opened in the main body of the equipment, and the air collecting groove is connected with the fixed groove and the groove body, and a blocking plate matching with the air collecting groove is fixedly installed between the two connecting plates, and a partition is fixedly installed at the lower end of the blocking plate, and a one-way air inlet pipe is sealed and fixedly installed on the partition, and two one-way air inlet pipes are provided; A one-way air pipe evenly distributed in a ring shape is sealed and fixedly installed on the sealing disk, and the upper ends of the one-way air pipes are all penetrated and fixedly installed on the lower end of the disc. A connecting pipe is fixedly connected between the one-way air pipes and the corresponding knocking rollers, and an extrusion component is installed on the air gathering trough.

7. The high-toughness valve seat iron-based powder metallurgy equipment according to claim 6, characterized in that: The extrusion component includes a reciprocating screw rod installed on the upper end of the rotating shaft through a one-way bearing, and the upper end of the reciprocating screw rod is rotatably connected to the wind gathering groove. A sealing disk is installed on the reciprocating screw rod through a ball nut, and the sealing disk is sealingly slidably installed on the wind gathering groove.

8. The high-toughness iron-based powder metallurgy equipment for valve seats according to claim 1, characterized in that: A blank making component is arranged on the equipment body, and the blank making component includes a blank making groove opened on the equipment body, and an electric telescopic rod is fixedly installed on the blank making groove. There are two electric telescopic rods, and a core rod is fixedly installed on the blank making groove. A carrying plate is fixedly installed between the two electric telescopic rods, and the carrying plate is sealingly and slidably installed between the blank making groove and the core rod.

9. The high-toughness valve seat iron-based powder metallurgy equipment according to claim 1, characterized in that: An adjustment component is provided on the disc, and the adjustment component includes an air suction device fixedly installed on the upper end of the disc, an annular tube 1 is fixedly connected to the air suction device, and a one-way air suction tube 2 is fixedly connected between the air bag and the annular tube 1; An air supply device is fixedly installed on the upper end of the disc, and an annular tube two is fixedly connected to the air supply device, and both annular tube one and annular tube two are fixedly connected to the disc, and a one-way air supply tube two is fixedly connected between the airbag and the annular tube two, and both the one-way suction tube two and the one-way air supply tube two are penetrated and fixedly installed on the corresponding limit box.

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