Alloy mold with ejection function for powder metallurgy machining

Abstract

The invention discloses an alloy die with an ejection function for powder metallurgy processing, and relates to the technical field of die-casting dies, the alloy die comprises an ejection mechanism slidably mounted in a die frame, a radial adjusting assembly is arranged on the top surface of the ejection mechanism, the radial adjusting assembly comprises a base and a fixed disc, the fixed disc is fixedly mounted on the base, and the fixed disc is fixedly mounted on the die frame. An outer ring adjusting mechanism is rotationally installed in the fixing disc, an inner ring adjusting mechanism is installed in the base and above the fixing disc, the outer ring adjusting mechanism is used for adjusting the position of the outer ejector rod in the radial direction, the inner ring adjusting mechanism is used for adjusting the position of the inner ejector rod in the radial direction, and the flow control assembly is installed in the position from the base to the lower die base. And the ejector rod is in transmission connection with the outer ring adjusting mechanism, so that the radial position of the ejector rod can be flexibly adjusted according to the diameters of stepped surfaces of inner rings and outer rings of castings with different diameters, the lower template and the whole ejection mechanism do not need to be replaced, the production preparation time for machining the castings with multiple specifications is shortened, and the machining adaptation range of the mold is widened.

Description

Technical Field

[0001] This invention relates to the field of die-casting mold technology, and in particular to an alloy mold for powder metallurgy processing with an ejection function. Background Technology

[0002] When processing alloy castings using powder metallurgy, the method involves precisely filling the molded cavity formed by the female mold with a quantitative feeding device. Then, the press drives the upper male mold downward and the lower male mold upward to apply a set high pressure to the metal powder or semi-molten alloy liquid in the cavity for cold pressing. At the same time, a certain holding time is maintained to improve the density and shape stability of the powder blank. After the holding pressure is completed, the ejection mechanism of the mold drives the ejector rod upward to smoothly eject the pressed powder blank or semi-molten alloy liquid from the cavity of the female mold, completing one forming operation.

[0003] In powder metallurgy die casting, strong adsorption and friction exist between the casting and the mold cavity after molding, especially for castings with stepped grooves on the bottom surface. Layered ejection using inner and outer double ejector rods is necessary to prevent casting deformation. However, in actual production, it is necessary to process both conventional castings of different diameters and castings with stepped grooves. Castings with stepped grooves, in particular, have stepped surfaces with different diameters on the inner and outer rings. Layered ejection using inner ejector rods corresponding to the inner ring stepped surfaces and outer ejector rods corresponding to the outer ring stepped surfaces is required to ensure uniform force on the casting during ejection and prevent deformation. Existing mold ejection mechanisms often use a fixed ejector rod design, which cannot adjust the radial position of the ejector rods. When processing castings of different diameters, it is necessary to simultaneously replace the upper moving mold, lower fixed mold, lower template, and even the entire ejection mechanism, resulting in long production preparation time and high equipment replacement and maintenance costs. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing alloy molds for powder metallurgy processing with ejection function, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is how to solve the problem that when die casting of castings with stepped grooves, it is not convenient to adjust the radial position of the push rod, the fixed spacing double push rod can only be adapted to one type of stepped groove casting, and lacks the function of layer adjustment.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an alloy mold for powder metallurgy processing with ejection function, comprising an upper mold plate and a lower mold plate, wherein an upper movable mold is installed inside the upper mold plate and a lower fixed mold is installed inside the lower mold plate, the upper movable mold and the lower fixed mold are engaged and moved together, the lower mold plate is installed in a lower mold base, a mold frame is fixedly installed on the bottom surface of the lower mold base, an ejection mechanism is slidably installed inside the mold frame, a radial adjustment component is disposed on the top surface of the ejection mechanism, the radial adjustment component comprises a base and a fixed plate, the fixed plate is fixedly installed on the base, an outer ring adjustment mechanism is rotatably installed inside the fixed plate, an inner ring adjustment mechanism is installed inside the base and above the fixed plate, the outer ring adjustment mechanism is used to radially adjust the position of the outer ejector rod, the inner ring adjustment mechanism is used to radially adjust the position of the inner ejector rod, and a flow control component is used to adjust the amount of release fluid, the flow control component is installed inside the base and the lower mold base and is connected to the outer ring adjustment mechanism in a driving connection.

[0008] As a preferred embodiment of the alloy mold for powder metallurgy processing with ejection function described in this invention, the outer ring adjustment mechanism includes a drive disk and a guide disk. The side wall of the drive disk is rotatably connected to the inside of the fixed disk through a limiting ring. An arc-shaped sliding groove is formed through the surface of the drive disk. The guide disk is fixedly installed on the fixed disk. A limiting sliding groove is formed through the surface of the guide disk. A slide block is slidably connected in the limiting sliding groove. A sliding column is fixedly connected to the bottom surface of the slide block. The sliding column is slidably connected in the arc-shaped sliding groove. A first rod seat is fixedly installed on the slide block. The bottom end of the outer ejector rod is installed in the first rod seat.

[0009] As a preferred embodiment of the alloy mold for powder metallurgy processing with ejection function described in this invention, one end of the arc-shaped slide is close to the axis of the drive disk, and the other end of the arc-shaped slide is far away from the axis of the drive disk.

[0010] As a preferred embodiment of the alloy mold for powder metallurgy processing with ejection function described in this invention, wherein: both sides of the fixed disk are provided with through slots, an adjusting component is fixedly installed on the side wall of the driving disk, a pointer is provided on the top of the adjusting component, and a scale line is provided on the top surface of the fixed disk above the through slot.

[0011] As a preferred embodiment of the alloy mold for powder metallurgy processing with ejection function described in this invention, the inner ring adjustment mechanism includes a driving unit and a radial adjustment unit, wherein the driving unit drives the radial adjustment unit to slide radially in the guide cylinder.

[0012] As a preferred embodiment of the alloy mold for powder metallurgy processing with ejection function described in this invention, the driving unit includes a first rotating drum and a lifting rod. The bottom of the first rotating drum is rotatably connected to the base via a bearing seat. A worm wheel is keyed to the side wall of the first rotating drum. The side wall of the worm wheel is meshed with a worm. The worm is rotatably installed in the base via a bearing seat. An indexing knob is fixedly installed at the end of the worm located outside the base. The bottom of the lifting rod is threadedly connected to the inside of the first rotating drum.

[0013] As a preferred embodiment of the alloy mold for powder metallurgy processing with ejection function described in this invention, the radial adjustment unit includes a drive plate and an adjustment plate. The drive plate is fixed on the top side wall of the lifting rod. The side wall of the drive plate has an inclined groove. One end of the adjustment plate is slidably connected in the inclined groove through a shaft. The other end of the adjustment plate is fixedly installed with a second rod seat. The bottom of the inner ejector rod is installed in the second rod seat. The adjustment plate is slidably connected in a notch opened in the side wall of the guide cylinder. The guide cylinder is fixedly installed at the center of the top surface of the guide plate through a connecting seat.

[0014] As a preferred embodiment of the alloy mold for powder metallurgy processing with ejection function described in this invention, wherein: the lower mold base has a main channel for the release fluid to enter, the flow control component includes a flow regulating unit and a flow guiding unit, the input end of the flow regulating unit is connected to the drive disk, an regulating ball is installed on the top of the flow regulating unit, a guide hole is opened through the side wall of the regulating ball, and the regulating ball is rotatably connected in the cavity of the main channel.

[0015] As a preferred embodiment of the alloy mold for powder metallurgy processing with ejection function described in this invention, the flow regulating unit includes a second rotating drum and a hexagonal prism. A drive gear is keyed to the side wall of the second rotating drum. The side wall of the drive disc has a toothed groove, and the drive disc is meshed with the drive gear through the toothed groove. A hexagonal groove is formed inside the second rotating drum, and the hexagonal prism is slidably connected in the hexagonal groove. The top of the hexagonal prism is cylindrical, and the regulating ball is fixedly installed on the top of the hexagonal prism.

[0016] As a preferred embodiment of the alloy mold for powder metallurgy processing with ejection function described in this invention, the flow guiding unit includes a hose, an annular flow channel is formed inside the lower mold base along the outer edge of the outer ejector rod, one end of the hose is connected to the annular flow channel through a connecting pipe, the annular flow channel is connected to the main flow channel, the other end of the hose is installed on the liquid inlet connector at the bottom of the outer ejector rod through a connecting pipe, a channel for the release fluid is formed inside the outer ejector rod, and a liquid outlet hole is formed on the top side wall of the outer ejector rod, the liquid outlet hole is connected to the liquid inlet connector through the channel inside the outer ejector rod.

[0017] The beneficial effects of this invention are:

[0018] 1. This technical solution adds a radial adjustment component containing an outer ring adjustment mechanism and an inner ring adjustment mechanism to the top surface of the ejector mechanism, realizing independent radial position adjustment of the outer ejector rod and the inner ejector rod. The radial position of the ejector rod can be flexibly adjusted according to the diameter of the inner and outer ring stepped surfaces of castings of different diameters, so that the inner ejector rod corresponds to the inner ring stepped surface of the stepped groove and the outer ejector rod precisely corresponds to the outer ring stepped surface. There is no need to replace the lower mold plate and the entire ejector mechanism, which shortens the production preparation time for processing castings of multiple specifications, effectively reduces equipment replacement and labor costs, and improves the processing adaptability range of the mold.

[0019] Furthermore, the outer ring adjustment mechanism enables synchronous radial adjustment of multiple outer ejector rods, while the inner ring adjustment mechanism achieves radial adjustment through a composite transmission of worm gear and worm wheel with inclined groove guidance. The two work together to achieve synchronous ejection of the stepped groove casting in layers, allowing the ejection force to be evenly applied to the inner and outer stepped surfaces of the casting. This solves the problem of uneven ejection force in the traditional fixed ejector rod design and effectively avoids quality defects such as deformation and cracking during the ejection process of the casting.

[0020] 2. Through the coordinated operation of the flow regulation unit, the diversion unit, and the outer ring adjustment mechanism, the adaptive linkage adjustment of the release fluid flow rate is achieved, matching the release fluid requirements of castings with different diameters. By connecting the flow regulation unit with the drive disc of the outer ring adjustment mechanism, the radial adjustment action of the outer ejector rod directly drives the adjustment ball to rotate synchronously. The release fluid flow rate is automatically adjusted by utilizing the change in the overlapping area of ​​the guide hole and the main channel. When the outer ejector rod moves outward to adapt to large-diameter castings, the flow rate automatically increases; when it moves inward to adapt to small-diameter castings, the flow rate automatically decreases. No manual adjustment is required, which avoids raw material contamination and cost waste caused by excessive release fluid usage, and also eliminates demolding difficulties, casting scratches, or deformation caused by insufficient usage. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an overall structural diagram of an alloy mold for powder metallurgy processing with an ejection function.

[0023] Figure 2 This is a structural diagram of the upper mold base of an alloy mold for powder metallurgy processing with an ejection function.

[0024] Figure 3This is an exploded view of the upper and lower mold bases of an alloy mold for powder metallurgy with an ejection function.

[0025] Figure 4 This is a structural diagram of a radial adjustment component for an alloy mold used in powder metallurgy with an ejection function.

[0026] Figure 5 This is a structural diagram of the radial adjustment assembly, lower mold, and casting of an alloy mold for powder metallurgy processing with ejection function.

[0027] Figure 6 This is a structural diagram of the outer ring adjustment mechanism of an alloy mold for powder metallurgy with an ejection function.

[0028] Figure 7 This is a bottom structural diagram of the drive disk of an alloy mold for powder metallurgy with an ejection function.

[0029] Figure 8 This is a structural diagram of the inner ring adjustment mechanism of an alloy mold for powder metallurgy with an ejection function.

[0030] Figure 9 This is a structural diagram of the drive unit and radial adjustment unit for an alloy mold used in powder metallurgy processing with an ejection function.

[0031] Figure 10 This is a structural diagram of a flow control component for an alloy mold used in powder metallurgy with an ejection function.

[0032] Figure 11 This is a structural diagram of the flow control component and lower template of an alloy mold for powder metallurgy processing with ejection function.

[0033] Figure 12 This is an internal structural diagram of the lower mold plate of an alloy mold for powder metallurgy processing with an ejection function.

[0034] In the diagram: 1. Upper mold base; 11. Upper template; 12. Upper moving mold; 2. Lower mold base; 21. Lower template; 22. Lower fixed mold; 23. Injection pipe; 24. Main runner; 25. Annular runner; 3. Mold frame; 4. Ejection mechanism; 41. Top plate; 42. Guide post; 43. Mounting base; 5. Radial adjustment assembly; 51. Base; 52. Outer ring adjustment mechanism; 521. Adjusting component; 522. Scale line; 523. Drive disc; 524. Gear groove; 525. Guide disc; 526. Limiting groove; 527. Slide seat; 528. First rod seat; 529. Arc-shaped groove; 5210. Slide column; 5 3. Inner ring adjustment mechanism; 531. Bearing seat; 532. First rotating drum; 533. Worm gear; 534. Worm; 535. Indexing knob; 536. Lifting rod; 537. Drive plate; 538. Adjusting plate; 539. Guide cylinder; 5310. Connecting seat; 5311. Inclined groove; 5312. Second rod seat; 54. Fixed plate; 6. Outer push rod; 61. Liquid outlet; 62. Liquid inlet connector; 7. Inner push rod; 8. Flow control assembly; 81. Second rotating drum; 82. Drive gear; 83. Hexagonal groove; 84. Hexagonal prism; 85. Adjusting ball; 851. Guide hole; 86. Hose; 9. Casting. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0038] Example 1, referring to Figures 1-5This is the first embodiment of the present invention. This embodiment provides an alloy mold for powder metallurgy processing with an ejection function, including an upper mold plate 11 and a lower mold plate 21. The upper mold plate 11 is equipped with an upper movable mold 12 and is mounted on an upper mold base 1. The lower mold plate 21 is equipped with a lower fixed mold 22. The upper movable mold 12 and the lower fixed mold 22 move together. The upper movable mold 12 and the lower fixed mold 22 serve as direct forming components. Through the mold closing movement, they form a closed cavity that matches the shape of the casting 9, providing space for the die casting of powder metallurgy raw materials. During the mold closing movement, the upper mold base 1 drives the upper mold plate 11 and the upper movable mold 12 to move downwards and precisely fit with the lower fixed mold 22 to ensure the cavity is sealed, thereby die casting the powder metallurgy raw materials into the required casting 9.

[0039] The lower mold plate 21 is installed in the lower mold base 2. The bottom surface of the lower mold base 2 is fixedly installed with a mold frame 3. The ejection mechanism 4 is slidably installed inside the mold frame 3. The ejection mechanism 4 includes a top plate 41, guide columns 42 and mounting base 43. Guide columns 42 are fixedly installed on the top surface of the top plate 41 near the corner. The guide columns 42 are slidably connected to the guide holes opened on the bottom surface of the lower mold base 2. The mounting base 43 is fixedly installed on the bottom surface of the top plate 41. The mounting base 43 is used to install an electric push rod or a cylinder to realize the up and down movement of the top plate 41 in the mold frame 3, so as to drive the outer ejector rod 6 and the inner ejector rod 7 to move up and down, so that the outer ejector rod 6 and the inner ejector rod 7 can slide in the lower fixed mold 22 to eject the die-cast part 9.

[0040] When processing castings 9 of different diameters, it is necessary to replace the upper moving mold 12 and the lower fixed mold 22. The upper moving mold 12 and the lower fixed mold 22 are removed from the upper template 11 and the lower template 21 respectively, and different diameter upper moving molds 12 and lower fixed molds 22 are used to process castings 9 of different diameters. The ejector mechanism 4 often uses a fixed installation method to install the ejector rod. Especially when ejecting castings 9 with stepped grooves on the bottom surface, different lower templates 21 and ejector mechanisms 4 need to be replaced according to the diameter of the stepped grooves to adapt to the different diameters. For castings 9 of the same diameter, a radial adjustment component 5 is added in this embodiment. The radial adjustment component 5 is set on the top surface of the ejector mechanism 4. The radial adjustment component 5 includes a base 51 and a fixed plate 54. The fixed plate 54 is fixedly installed on the base 51. An outer ring adjustment mechanism 52 is rotatably installed inside the fixed plate 54. An inner ring adjustment mechanism 53 is installed inside the base 51 and above the fixed plate 54. The outer ring adjustment mechanism 52 is used to radially adjust the position of the outer ejector rod 6, and the inner ring adjustment mechanism 53 is used to radially adjust the position of the inner ejector rod 7.

[0041] For scenarios involving the processing of multi-specification castings 9, it is necessary to replace the mold, template, and ejector mechanism 4, resulting in long production preparation time and high equipment costs. By adding a radial adjustment component 5 to the top surface of the ejector mechanism 4, with the base 51 as support, and the fixed plate 54 providing support for the installation and guidance of the outer ring adjustment mechanism 52, the outer ring adjustment mechanism 52 adjusts the radial displacement of the outer ejector rod 6 through rotation and sliding transmission, and the inner ring adjustment mechanism 53 adjusts the radial displacement of the inner ejector rod 7 through lifting and sliding transmission. This allows the same set of ejector mechanisms 4 to be adapted to castings 9 with stepped grooves of different diameters, thereby improving the processing adaptability of the mold and enhancing the versatility of the equipment.

[0042] Example 2, refer to Figures 6-9 This is the second embodiment of the present invention, which is based on the previous embodiment. The outer ring adjustment mechanism 52 includes a drive disk 523 and a guide disk 525. The side wall of the drive disk 523 is rotatably connected inside the fixed disk 54 by a limiting ring. The limiting ring provides circumferential rotation constraint for the drive disk 523, ensuring that the drive disk 523 can only rotate around the axis inside the fixed disk 54 without radial offset. An arc-shaped sliding groove 529 is opened through the surface of the drive disk 523. The guide disk 525 is fixedly installed on the fixed disk 54. A limiting sliding groove 526 is opened through the surface of the guide disk 525. A slide seat 527 is slidably connected in the limiting sliding groove 526. A sliding column 5210 is fixedly connected to the bottom surface of the slide seat 527. The sliding column 5210 is slidably connected in the arc-shaped sliding groove 529. A first rod seat 528 is fixedly installed on the slide seat 527. The bottom end of the outer push rod 6 is installed in the first rod seat 528.

[0043] When the drive disc 523 rotates, the arc-shaped slide groove 529, through its sliding engagement with the slide column 5210 on the bottom surface of the slide block 527, converts the rotational motion of the drive disc 523 into the radial linear motion of the slide block 527 along the limiting slide groove 526 of the guide disc 525. The slide block 527 is fixedly installed with the outer push rod 6 through the first rod seat 528, and can ultimately drive the outer push rod 6 to achieve radial position adjustment.

[0044] It should be noted that one end of the arc-shaped slide 529 is close to the axis of the drive disk 523, and the other end of the arc-shaped slide 529 is far away from the axis of the drive disk 523. Specifically, the arc-shaped slide 529 is an eccentric guide structure. Through the near-axis and far-axis eccentric design of the arc-shaped slide 529, when the drive disk 523 rotates, the slide column 5210 slides from the near-axis end to the far-axis end in the arc-shaped slide 529, or when the drive disk 523 rotates in the opposite direction, the slide column 5210 slides from the far-axis to the near-axis in the arc-shaped slide 529. This drives the slide block 527 and the outer ejector rod 6 to move radially from near the axis of the lower fixed mold 22 to far away from the axis, thereby changing the circumferential distribution diameter of the outer ejector rod 6 to adapt to the outer ring ejection requirements of castings 9 with different diameters.

[0045] To facilitate adjustment of the rotation angle of the drive disc 523 and the radial position of the first rod seat 528 and the outer push rod 6, through slots are provided on both side walls of the fixed disc 54. An adjusting component 521 is fixedly installed on the side wall of the drive disc 523. A pointer is provided on the top of the adjusting component 521. A scale line 522 is provided on the top surface of the fixed disc 54 above the through slot. The through slot provides space for the adjusting component 521 to rotate. The operator can drive the drive disc 523 to rotate by moving the adjusting component 521. The pointer on the top of the adjusting component 521 and the scale line 522 on the top surface of the fixed disc 54 are aligned. 2. In conjunction with the control, the rotation angle of the drive disc 523 is converted into a visual scale reading. The operator can precisely control the rotation angle of the adjusting component 521 according to the diameter requirements of the casting 9, and thus precisely control the radial displacement of the outer push rod 6 to avoid over- or under-adjustment. As a preferred solution, a wave groove is set on the bottom surface of the through groove, and then a spring-loaded ball is installed in the corresponding adjusting component 521 above the bottom surface of the through groove to ensure the stability of the adjusting component 521 on the fixed disc 54. The working principle of this part is all existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here.

[0046] The inner ring adjustment mechanism 53 includes a drive unit and a radial adjustment unit. The drive unit drives the radial adjustment unit to slide radially within the guide cylinder 539. The drive unit includes a first rotating cylinder 532 and a lifting rod 536. The bottom of the first rotating cylinder 532 is rotatably connected to the base 51 via a bearing seat 531. A worm gear 533 is keyed to the side wall of the first rotating cylinder 532. The side wall of the worm gear 533 meshes with a worm 534. The worm 534 is rotatably mounted in the base 51 via a bearing seat. An indexing knob 535 is fixedly installed at the end of the worm 534 outside the seat 51. The bottom of the lifting rod 536 is connected to the internal thread of the first rotating drum 532. When the operator rotates the indexing knob 535, the worm 534 rotates. The worm 534 meshes with the worm wheel 533 for transmission. The worm wheel 533 drives the first rotating drum 532 to rotate in the bearing seat 531 through a key connection. The threaded connection between the first rotating drum 532 and the lifting rod 536 converts the rotational motion into the linear lifting motion of the lifting rod 536.

[0047] The radial adjustment unit includes a drive plate 537 and an adjustment plate 538. The drive plate 537 is fixed to the top side wall of the lifting rod 536. The side wall of the drive plate 537 has a groove 5311. One end of the adjustment plate 538 is slidably connected in the groove 5311 via a shaft. The other end of the adjustment plate 538 is fixedly mounted with a second rod seat 5312. The bottom of the inner top rod 7 is installed in the second rod seat 5312. The adjustment plate 538 is slidably connected in a notch in the side wall of the guide cylinder 539. The guide cylinder 539 provides radial guidance for the adjustment plate 538. The guide cylinder 539 is fixedly mounted on the guide plate 52 via a connecting seat 5310. At the center of the top surface of 5, the lifting rod 536 drives the drive plate 537 to rise and fall synchronously. The inclined groove 5311 on the side wall of the drive plate 537, through sliding cooperation with the end shaft of the adjusting plate 538, converts the lifting motion into the radial sliding motion of the adjusting plate 538 along the notch of the guide cylinder 539. The adjusting plate 538 drives the inner push rod 7 to move through the second rod seat 5312 to achieve radial position adjustment, thereby realizing the radial adjustment of the inner push rod 7 to adapt to the different diameter requirements of the inner ring of the bottom surface of the stepped groove casting 9. In cooperation with the outer ring adjustment mechanism 52, it realizes the precise ejection of the stepped groove casting 9 in layers, avoiding deformation or damage caused by uneven force on the casting 9 during ejection.

[0048] Example 3, referring to Figures 10-12 This is the third embodiment of the present invention, which is based on the first two embodiments. The flow control component 8 is used to adjust the amount of release fluid. The flow control component 8 is installed inside the base 51 to the lower mold base 2 and is connected to the outer ring adjustment mechanism 52. The lower mold base 2 has a main channel 24 for the release fluid to enter. The flow control component 8 includes a flow adjustment unit and a flow guiding unit. The input end of the flow adjustment unit is connected to the drive disk 523. An adjustment ball 85 is installed on the top of the flow adjustment unit. A guide hole 851 is opened through the side wall of the adjustment ball 85, and the adjustment ball 85 is rotatably connected in the cavity of the main channel 24.

[0049] The main channel 24 provides the main channel for the release fluid to enter the lower mold base 2. An injection pipe 23 is installed on the side wall of the lower mold base 2. Through the injection pipe 23, in conjunction with the inlet pipe and the pump, the release fluid is introduced into the main channel 24. The specific working principles of the pump and inlet pipe are existing technologies, clearly understood by those skilled in the art, and will not be elaborated here. The flow control component 8 adjusts the release fluid flow rate through the flow regulation unit. The flow guiding unit delivers the adjusted release fluid to the outer ejector rod 6. The guide hole 851 on the regulating ball 85 is connected to the main channel 24. When the regulating ball 85 rotates, the overlapping area between the guide hole 851 and the main channel 24 changes. The larger the overlapping area, the greater the flow rate, and vice versa, thus achieving flow regulation. The flow regulation unit and... The drive disc 523 is connected to the transmission, so that when the outer ring adjustment mechanism 52 adjusts the position of the outer ejector rod 6, it drives the adjustment ball 85 to rotate. When the outer ring adjustment mechanism 52 adjusts the outer ejector rod 6 to move outward radially, it indicates that the diameter of the casting 9 to be ejected is larger. At this time, the outer ring adjustment mechanism 52 drives the adjustment ball 85 to rotate, so that the overlapping area of ​​the guide hole 851 of the adjustment ball 85 and the main channel 24 becomes larger, so that more release fluid is introduced into the cavity of the lower mold 22, so as to better cooperate with the outer ejector rod 6 and the inner ejector rod 7 to demold the larger diameter casting 9. When the outer ejector rod 6 moves inward radially, the opposite is true, thereby avoiding raw material contamination and cost waste caused by excessive use of release fluid, or demolding difficulties and damage to the casting 9 caused by insufficient use of release fluid.

[0050] The flow regulating unit includes a second rotating drum 81 and a hexagonal prism 84. A drive gear 82 is keyed to the side wall of the second rotating drum 81. A toothed groove 524 is formed on the side wall of the drive disc 523, which meshes with the drive gear 82 through the toothed groove 524. A hexagonal groove 83 is formed inside the second rotating drum 81, and the hexagonal prism 84 slides within the hexagonal groove 83. The top of the hexagonal prism 84 is cylindrical, and an adjusting ball 85 is fixedly mounted on the top of the hexagonal prism 84. The drive disc 523 transmits its rotational torque to the drive gear 82 through the toothed groove 524. The second rotating cylinder 81 slides with the hexagonal prism 84 through the internal hexagonal groove 83, which not only realizes the synchronous rotation of the second rotating cylinder 81 and the hexagonal prism 84, but also allows the hexagonal prism 84 to slide along the axis, adapting to the lifting and lowering movement of the ejection mechanism 4. It should be noted that the top of the hexagonal prism 84 is cylindrical and is installed on the bottom surface of the lower template 21 through the sealed bearing seat 531, and is located below the connection between the hexagonal prism 84 and the adjusting ball 85. That is, the relief groove of the lower template 21 for the rotation of the hexagonal prism 84 is also equipped with a sealed bearing and a sealing gasket to prevent the release liquid from flowing out of the relief groove.

[0051] Specifically, the flow-guiding unit includes a hose 86. An annular flow channel 25 is formed inside the lower mold base 2 along the outer periphery of the outer ejector rod 6. One end of the hose 86 is connected to the annular flow channel 25 via a connecting pipe. The annular flow channel 25 is connected to the main flow channel 24. The other end of the hose 86 is installed on the inlet connector 62 at the bottom of the outer ejector rod 6 via the connecting pipe. A channel for the release fluid is formed inside the outer ejector rod 6. An outlet hole 61 is formed on the top side wall of the outer ejector rod 6. The outlet hole 61 is connected to the inlet connector 62 via the channel inside the outer ejector rod 6. The release fluid transported by the main flow channel 24 enters the annular flow channel 25 after flow regulation. The annular flow channel 25 is connected to the hose 86 via the connecting pipe. Part of the hose 86 is coiled like a spring, and the flexibility of the hose 86 can adapt to the diameter of the outer ejector rod 6. The positional changes during the adjustment process and the lifting and lowering movements of the outer ejector rod 6 prevent damage to the pipeline due to pulling. The release fluid enters the channel inside the outer ejector rod 6 through the inlet connector 62 and finally sprays out from the outlet hole 61 on the top side wall. Since the outlet hole 61 is located on the top side wall of the outer ejector rod 6, when the casting 9 is initially ejected or the outer ejector rod 6 is in the ejection hole of the lower mold 22, the outlet hole 61 is sealed and does not spray out the release fluid due to the ejection hole. When the outlet hole 61 is in the cavity of the lower mold 22, the release fluid is sprayed out, realizing the release of the casting 9 by the release fluid. At the same time, since the outlet hole 61 is located on the top side wall of the outer ejector rod 6, rather than the top surface, the blockage of the outlet hole 61 or the imprinting on the bottom outer ring of the casting 9 can be avoided during die casting.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An alloy mold for powder metallurgy processing with ejection function, comprising an upper mold plate (11) and a lower mold plate (21), wherein an upper movable mold (12) is installed inside the upper mold plate (11), and a lower fixed mold (22) is installed inside the lower mold plate (21), wherein the upper movable mold (12) and the lower fixed mold (22) engage in mold closing motion, characterized in that: The lower template (21) is installed in the lower mold base (2), and a mold frame (3) is fixedly installed on the bottom surface of the lower mold base (2). An ejection mechanism (4) is slidably installed inside the mold frame (3). A radial adjustment assembly (5) is disposed on the top surface of the ejector mechanism (4). The radial adjustment assembly (5) includes a base (51) and a fixed plate (54). The fixed plate (54) is fixedly installed on the base (51). An outer ring adjustment mechanism (52) is rotatably installed inside the fixed plate (54). An inner ring adjustment mechanism (53) is installed inside the base (51) and above the fixed plate (54). The outer ring adjustment mechanism (52) is used to radially adjust the position of the outer ejector rod (6), and the inner ring adjustment mechanism (53) is used to radially adjust the position of the inner ejector rod (7). A flow control component (8) is used to adjust the amount of release fluid. The flow control component (8) is installed inside the base (51) to the lower mold base (2) and is connected to the outer ring adjustment mechanism (52) in a transmission manner.

2. The alloy mold for powder metallurgy processing with ejection function as described in claim 1, characterized in that: The outer ring adjustment mechanism (52) includes a drive disk (523) and a guide disk (525). The side wall of the drive disk (523) is rotatably connected inside the fixed disk (54) by a limiting ring. An arc-shaped sliding groove (529) is opened through the surface of the drive disk (523). The guide disk (525) is fixedly installed on the fixed disk (54). A limiting sliding groove (526) is opened through the surface of the guide disk (525). A slide seat (527) is slidably connected in the limiting sliding groove (526). A sliding column (5210) is fixedly connected to the bottom surface of the slide seat (527). The sliding column (5210) is slidably connected in the arc-shaped sliding groove (529). A first rod seat (528) is fixedly installed on the slide seat (527). The bottom end of the outer push rod (6) is installed in the first rod seat (528).

3. The alloy mold for powder metallurgy processing with ejection function as described in claim 2, characterized in that: One end of the arc-shaped groove (529) is close to the axis of the drive disk (523), and the other end of the arc-shaped groove (529) is far away from the axis of the drive disk (523).

4. The alloy mold for powder metallurgy processing with ejection function as described in claim 2, characterized in that: The fixed disk (54) has through slots on both sides of its sidewalls. An adjusting component (521) is fixedly installed on the sidewall of the drive disk (523). A pointer is provided on the top of the adjusting component (521). A scale line (522) is provided on the top surface of the fixed disk (54) above the through slot.

5. The alloy mold for powder metallurgy processing with ejection function as described in claim 1, characterized in that: The inner ring adjustment mechanism (53) includes a drive unit and a radial adjustment unit, wherein the drive unit drives the radial adjustment unit to slide radially in the guide cylinder (539).

6. The alloy mold for powder metallurgy processing with ejection function as described in claim 5, characterized in that: The drive unit includes a first rotating drum (532) and a lifting rod (536). The bottom of the first rotating drum (532) is rotatably connected to the base (51) via a bearing seat (531). A worm gear (533) is keyed to the side wall of the first rotating drum (532). The side wall of the worm gear (533) is meshed with a worm (534). The worm (534) is rotatably installed in the base (51) via a shaft seat. An indexing knob (535) is fixedly installed at the end of the worm (534) located outside the base (51). The bottom of the lifting rod (536) is threadedly connected to the inside of the first rotating drum (532).

7. The alloy mold for powder metallurgy processing with ejection function as described in claim 6, characterized in that: The radial adjustment unit includes a drive plate (537) and an adjustment plate (538). The drive plate (537) is fixed on the top side wall of the lifting rod (536). The side wall of the drive plate (537) is provided with a slanted groove (5311). One end of the adjustment plate (538) is slidably connected in the slanted groove (5311) through a shaft. The other end of the adjustment plate (538) is fixedly installed with a second rod seat (5312). The bottom of the inner top rod (7) is installed in the second rod seat (5312). The adjustment plate (538) is slidably connected in a notch opened in the side wall of the guide cylinder (539). The guide cylinder (539) is fixedly installed at the center of the top surface of the guide plate (525) through a connecting seat (5310).

8. The alloy mold for powder metallurgy processing with ejection function as described in claim 4, characterized in that: The lower mold base (2) has a main channel (24) for the release fluid to enter. The flow control component (8) includes a flow regulating unit and a flow guiding unit. The input end of the flow regulating unit is connected to the drive disk (523). An regulating ball (85) is installed on the top of the flow regulating unit. A guide hole (851) is opened through the side wall of the regulating ball (85), and the regulating ball (85) is rotatably connected in the cavity of the main channel (24).

9. The alloy mold for powder metallurgy processing with ejection function as described in claim 8, characterized in that: The flow regulating unit includes a second rotating drum (81) and a hexagonal prism (84). The side wall of the second rotating drum (81) is keyed with a drive gear (82). The side wall of the drive disk (523) is provided with a toothed groove (524). The drive disk (523) is meshed with the drive gear (82) through the toothed groove (524). The interior of the second rotating drum (81) is provided with a hexagonal groove (83). The hexagonal prism (84) is slidably connected in the hexagonal groove (83). The top of the hexagonal prism (84) is cylindrical. The regulating ball (85) is fixedly installed on the top of the hexagonal prism (84).

10. The alloy mold for powder metallurgy processing with ejection function as described in claim 9, characterized in that: The flow-guiding unit includes a hose (86). An annular flow channel (25) is provided inside the lower mold base (2) along the outer edge of the outer ejector rod (6). One end of the hose (86) is connected to the annular flow channel (25) through a connecting pipe. The annular flow channel (25) is connected to the main flow channel (24). The other end of the hose (86) is installed on the liquid inlet connector (62) at the bottom of the outer ejector rod (6) through a connecting pipe. A channel for the release fluid to flow is provided inside the outer ejector rod (6). A liquid outlet hole (61) is provided on the top side wall of the outer ejector rod (6). The liquid outlet hole (61) is connected to the liquid inlet connector (62) through the channel inside the outer ejector rod (6).

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