Powder metallurgy gear shaping die
By introducing structures such as buffer dampers, guide rods, exhaust grooves and vacuum pumps into the powder metallurgy gear shaping mold, the problems of mold impact force and air retention are solved, the stability of the mold and the shaping quality are improved, and the production needs of gears of different sizes are met.
Patent Information
- Application Number
- CN202422819609.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Traditional powder metallurgy gear shaping dies generate impact force during the descent of the upper die, causing damage to the die and deformation of the gear. It is also difficult to effectively expel the air and excess powder inside the die, affecting the shaping quality and efficiency.
A powder metallurgy gear shaping die was designed. A buffer damper was used to absorb impact force, a guide rod maintained the stability of the upper mold plate, an exhaust groove and an air pump cooperated to exhaust air and powder, and a limit clamp U-shaped clamp fixed the gear.
It effectively protects the mold and gear from damage, improves the shaping quality and efficiency, ensures the precise pressing and stable clamping of the gear, avoids gas retention defects, and adapts to the production of gears of different sizes.
Smart Images
Figure CN223382588U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a powder metallurgy gear shaping mold. Background Art
[0002] Molds are various molds and tools used in industrial production to obtain the desired products by methods such as injection molding, blow molding, extrusion, die casting or forging, smelting, and stamping. In short, molds mainly realize the processing of the shape of the object by changing the physical state of the molded material. Under the action of external force, the blank is made into a tool with a specific shape and size. It is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, as well as compression or injection molding of engineering plastics, rubber, ceramics and other products.
[0003] Traditional powder metallurgy gear shaping dies typically utilize a simple upper and lower die structure, where the powder metallurgy material is compressed and formed within the die by applying external force. However, the lowering of the upper die in these traditional shaping dies often generates significant impact force, which can easily damage the die and deform the gear, thus affecting shaping quality and production efficiency. Furthermore, air and excess powder inside the die are difficult to effectively expel, easily forming bubbles and defects during the shaping process, further reducing gear performance and reliability. Therefore, a design of a powder metallurgy gear shaping die is needed. Utility Model Content
[0004] The purpose of the utility model is to provide a powder metallurgy gear shaping die to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a powder metallurgy gear shaping mold, comprising a support seat, a base is fixedly installed on the top of the support seat, a hydraulic cylinder is fixedly installed on the top of the base, and there are four groups in total, which provide strong downward pressure through the top plate to drive the upper model plate to perform gear shaping, and the top of the hydraulic cylinder is fixedly installed with a top plate; a model exhaust limit assembly, wherein the model exhaust limit assembly is arranged above the base; the model exhaust limit assembly comprises: a model part, wherein the model part is arranged at the top of the base; an exhaust limit part, wherein the exhaust limit part is arranged inside and above the base.
[0006] Preferably, the model part includes: a buffer damper, which is fixedly mounted on the bottom of the inner wall of the base; a lower model plate is fixedly mounted on the top of the buffer damper, a model shaping groove is provided on the top of the lower model plate, a guide rod is movably passed through the top of the lower model plate, and the bottom of the guide rod is fixedly mounted on the bottom of the inner wall of the base.
[0007] A buffer damper is provided and installed at the bottom of the inner wall of the base to buffer the impact force when the upper mold plate descends, thereby protecting the mold and gears from damage.
[0008] Preferably, an upper model plate is provided above the model shaping groove, and the upper model plate is located below the top plate, and a lifting cylinder is provided on the top of the upper model plate, and the lifting cylinder is fixedly installed on the top of the top plate.
[0009] The guide rods are provided to ensure that the upper model plate remains vertical and stable during the descent process to avoid deviation.
[0010] An upper model plate is provided below the top plate and is driven by a lifting cylinder to move up and down, thereby cooperating with the lower model plate to complete the gear shaping.
[0011] Preferably, a through hole is provided at the bottom of the inner wall of the model shaping groove, and a top core is provided inside the through hole. The bottom of the top core is fixedly mounted on the support plate, and the support plate is fixedly mounted on the bottom of the inner wall of the base.
[0012] A top core is provided, which is arranged in the bottom through-hole of the model shaping groove and is used for supporting and ejecting the shaped gear from the bottom.
[0013] Preferably, the exhaust limiting part includes: an exhaust groove, which is opened on one side of the base; a mounting seat, which is arranged on one side of the support seat; a C-shaped limiting plate, which is fixedly installed on the outer wall of the base, and there are two groups in total; an exhaust hole is opened on the inner wall of the exhaust groove, and the exhaust hole movably passes through the outer wall of the model shaping groove, and a connecting baffle is fixedly installed on the inner wall of the exhaust groove.
[0014] An exhaust groove is provided on one side of the base, and an exhaust hole is provided inside the base, which is connected to the outer wall of the model shaping groove to discharge air and excess powder inside the mold.
[0015] Preferably, an air pump is fixedly mounted on the top of the mounting seat, and an air pump is connected to the top of the air pump and provided with an air pump pipe, and the air pump pipe movably passes through the connecting baffle and extends to the inside of the exhaust hole.
[0016] By providing an air pump, which is connected to the air exhaust pipe and the exhaust hole, the exhaust process inside the mold is accelerated, thereby improving the shaping efficiency and product quality.
[0017] Preferably, the internal sliding connection of the C-shaped limit plate is connected to a limit clamping U-shaped clamp, and there are two groups in total. The outer wall of the limit clamping U-shaped clamp is movably penetrated by a two-way adjustment rod, and the two-way adjustment rod movably penetrates the C-shaped limit plate and extends to both sides of the C-shaped limit plate. A rotating handle is provided at one end of the two-way adjustment rod, and there are two groups in total, which are respectively located on both sides of the C-shaped limit plate.
[0018] By setting a limited clamping U-shaped clamp, it is slidably connected inside the C-shaped limit plate and adjusted through a two-way adjustment rod and a rotating handle to clamp and fix the gear to be shaped, ensuring its stability and accuracy during the shaping process.
[0019] The utility model provides a powder metallurgy gear shaping die. It has the following beneficial effects:
[0020] (1) The utility model is provided with a buffer damper, which effectively absorbs the impact force generated when the upper model plate descends, protects the mold itself from damage, and ensures the smooth progress of the gear shaping process. When the cylinder is rolled, the model shaping groove opened on the lower model plate cooperates with the upper model plate to achieve accurate pressing of the powder metallurgy gear. Furthermore, by providing a guide rod, the stability of the upper model plate during the descent process is enhanced, avoiding deviation and shaking, thereby achieving the effect of improving production efficiency and shaping quality.
[0021] (2) The utility model provides an effective exhaust channel for the inside of the mold by arranging exhaust grooves and exhaust holes, thereby avoiding shaping defects caused by gas retention. At the same time, the use of the vacuum pump and the exhaust pipe accelerates the exhaust process inside the mold, ensuring that the air and excess powder inside the mold can be discharged in time during the gear shaping process. Furthermore, the limit clamping U-shaped clamp slidably connected inside the C-shaped limit plate, and the adjustment function achieved by the two-way adjustment rod and the rotating handle enable the mold to adapt to the production requirements of gears of different sizes and specifications, thereby achieving the effect of improving shaping efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 This is a side view of a powder metallurgy gear shaping die structure of the utility model;
[0024] Figure 3 This is a top view of the limit structure of a powder metallurgy gear shaping die in the utility model;
[0025] Figure 4 This is a side view of the ventilation structure of a powder metallurgy gear shaping die of the utility model.
[0026] In the figure: 1 support seat, 2 base, 3 hydraulic cylinder, 4 top plate, 5 model exhaust limit assembly, 51 model part, 511 buffer damper, 512 lower model plate, 513 model shaping groove, 514 guide rod, 515 upper model plate, 516 lifting cylinder, 517 top core, 518 support plate, 52 exhaust limit part, 521 exhaust groove, 522 exhaust hole, 523 connecting baffle, 524 mounting seat, 525 exhaust pump, 526 exhaust pipe, 527 C-type limit plate, 528 limit clamping U-shaped clamp, 529 two-way adjustment rod, 5210 rotating handle. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0028] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. Example
[0029] The preferred embodiment of the powder metallurgy gear shaping die provided by the present invention is as follows: Figure 1-4 As shown: A powder metallurgy gear shaping mold includes a support base 1, a base 2 is fixedly installed on the top of the support base 1, a hydraulic cylinder 3 is fixedly installed on the top of the base 2, and there are four groups in total, which provide strong downward pressure through the top plate to drive the upper model plate to perform gear shaping, and a top plate 4 is fixedly installed on the top of the hydraulic cylinder 3; a model exhaust limit assembly 5, the model exhaust limit assembly 5 is arranged above the base 2; the model exhaust limit assembly 5 includes: a model part 51, the model part 51 is arranged on the top of the base 2; an exhaust limit part 52, the exhaust limit part 52 is arranged inside and above the base 2.
[0030] The model part 51 includes: a buffer damper 511, which is fixedly mounted on the bottom of the inner wall of the base 2; a lower model plate 512 is fixedly mounted on the top of the buffer damper 511, a model shaping groove 513 is provided on the top of the lower model plate 512, a guide rod 514 is movably passed through the top of the lower model plate 512, and the bottom of the guide rod 514 is fixedly mounted on the bottom of the inner wall of the base 2.
[0031] A buffer damper 511 is provided and installed at the bottom of the inner wall of the base to buffer the impact force when the upper mold plate descends, thereby protecting the mold and gears from damage.
[0032] An upper model plate 515 is provided above the model shaping groove 513 , and the upper model plate 515 is located below the top plate 4 . A lifting cylinder 516 is provided on the top of the upper model plate 515 , and the lifting cylinder 516 is fixedly installed on the top of the top plate 4 .
[0033] The guide rods 514 are provided to ensure that the upper mold plate remains vertical and stable during the descent process to avoid deviation.
[0034] An upper model plate 515 is provided below the top plate and is driven by a lifting cylinder 516 to move up and down, thereby cooperating with the lower model plate to complete the gear shaping.
[0035] A through hole is provided at the bottom of the inner wall of the model shaping groove 513 , and a top core 517 is provided inside the through hole. The bottom of the top core 517 is fixedly mounted on a support plate 518 , and the support plate 518 is fixedly mounted on the bottom of the inner wall of the base 2 .
[0036] A top core 517 is provided in the through hole at the bottom of the model shaping groove to support and eject the shaped gear from the bottom.
[0037] Furthermore, this embodiment is provided with a buffer damper 511, which effectively absorbs the impact force generated when the upper model plate 515 descends, protects the mold itself from damage, and ensures the smooth progress of the gear shaping process. When the cylinder is pressed, the model shaping groove 513 opened on the lower model plate 512 cooperates with the upper model plate 515 to achieve precise pressing of the powder metallurgy gear. Furthermore, by providing a guide rod 514, the stability of the upper model plate during the descent process is enhanced to avoid deviation and shaking. Example
[0038] On the basis of the first embodiment, the preferred embodiment of the powder metallurgy gear shaping die provided by the present invention is as follows: Figure 1-4 As shown: the exhaust limit part 52 includes: an exhaust groove 521, the exhaust groove 521 is opened on one side of the base 2; the mounting seat 524, the mounting seat 524 is arranged on one side of the support seat 1; a C-shaped limit plate 527, the C-shaped limit plate 527 is fixedly installed on the outer wall of the base 2, and there are two groups in total; the inner wall of the exhaust groove 521 is provided with an exhaust hole 522, and the exhaust hole 522 is movable through the outer wall of the model shaping groove 513, and the inner wall of the exhaust groove 521 is fixedly installed with a connecting baffle 523.
[0039] An exhaust groove 521 is provided on one side of the base, and an exhaust hole 522 is provided inside the base, which is connected to the outer wall of the model shaping groove to exhaust air and excess powder inside the mold.
[0040] An air pump 525 is fixedly mounted on the top of the mounting base 524 . An air pump 526 is connected to the top of the air pump 525 . The air pump 526 movably passes through the connecting baffle 523 and extends to the inside of the exhaust hole 522 .
[0041] By providing an air pump 525 and cooperating with an air extraction pipe 526 connected to the exhaust hole, the exhaust process inside the mold is accelerated, thereby improving the shaping efficiency and product quality.
[0042] The internal sliding connection of the C-shaped limit plate 527 is connected to the limit clamping U-shaped clamp 528, and there are two groups in total. The outer wall of the limit clamping U-shaped clamp 528 is movably penetrated by a two-way adjustment rod 529, and the two-way adjustment rod 529 movably penetrates the C-shaped limit plate 527 and extends to both sides of the C-shaped limit plate 527. A rotating handle 5210 is provided at one end of the two-way adjustment rod 529, and there are two groups in total, which are located on both sides of the C-shaped limit plate 527 respectively.
[0043] By setting a limited clamping U-shaped clamp 528, it is slidably connected inside the C-shaped limit plate and adjusted through a two-way adjustment rod 529 and a rotating handle 5210 to clamp and fix the gear to be shaped, ensuring its stability and accuracy during the shaping process.
[0044] Furthermore, this embodiment provides an effective exhaust channel for the inside of the mold by providing an exhaust groove 521 and an exhaust hole 522, thereby avoiding shaping defects caused by gas retention. At the same time, the coordinated use of the vacuum pump 525 and the exhaust pipe 526 accelerates the exhaust process inside the mold, ensuring that the air and excess powder inside the mold can be discharged in time during the gear shaping process. Furthermore, the limiting clamping U-shaped clamp 528 slidably connected inside the C-shaped limiting plate 527, and the adjustment function achieved by the two-way adjustment rod 529 and the rotating handle 5210 enable the mold to adapt to the production requirements of gears of different sizes and specifications.
[0045] During use, first, a buffer damper 511 is fixedly installed at the bottom of the inner wall of the base 2, which plays a role in shock absorption and buffering, protecting the mold and gear from damage during the shaping process. The top of the buffer damper 511 is connected to the lower model plate 512, and a model shaping groove 513 is opened on the lower model plate 512, which is the main area for gear shaping. In order to ensure that the upper model plate 515 can remain vertical and stable during the descent, a guide rod 514 is movable through the top of the lower model plate. When the hydraulic cylinder starts working, the top plate 4 drives the upper model plate 515 to descend, and cooperates with the lower model plate 512 to shape the powder metallurgy gear placed in the model shaping groove 513. After the shaping is completed, the upper model plate rises. At this time, the top core 517 located in the through-hole at the bottom of the inner wall of the model shaping groove will be supported. Under the action of the support plate 518, the shaped gear is ejected from the mold for easy removal. At the same time, an exhaust groove 521 is opened on one side of the base 2, and the inner wall of the exhaust groove is provided with exhaust holes 522. These exhaust holes are connected with the outer wall of the model shaping groove 513 to ensure that the gas inside the mold can be discharged smoothly. In order to accelerate the exhaust process, an air pump 525 is fixedly installed on the mounting seat 524. The air pump is connected to the exhaust hole through the exhaust pipe 526 to extract the gas inside the mold. Furthermore, a C-shaped limit plate 527 is fixedly installed on the outer wall of the base 2, and its internal sliding connection is provided with a limit clamping U-shaped clamp 528. By adjusting the two-way adjustment rod 529 and rotating the handle 5210, the position and clamping force of the limit clamping U-shaped clamp can be adjusted, thereby achieving stable clamping and fixation of the gear.
[0046] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A powder metallurgy gear shaping die, comprising a support seat (1), characterized in that: A base (2) is fixedly mounted on the top of the support seat (1), a hydraulic cylinder (3) is fixedly mounted on the top of the base (2), and there are four groups of hydraulic cylinders (3) in total, and a top plate (4) is fixedly mounted on the top of the hydraulic cylinder (3); A model exhaust limit assembly (5), wherein the model exhaust limit assembly (5) is arranged above the base (2); The model exhaust limiter assembly (5) includes: A model portion (51), wherein the model portion (51) is arranged on the top of the base (2); An exhaust limiting portion (52), wherein the exhaust limiting portion (52) is arranged inside and above the base (2).
2. The powder metallurgy gear shaping die according to claim 1, characterized in that: The model part (51) includes: A buffer damper (511), the buffer damper (511) being fixedly mounted on the bottom of the inner wall of the base (2); A lower model plate (512) is fixedly mounted on the top of the buffer damper (511), a model shaping groove (513) is provided on the top of the lower model plate (512), a guide rod (514) movably penetrates the top of the lower model plate (512), and the bottom of the guide rod (514) is fixedly mounted on the bottom of the inner wall of the base (2).
3. The powder metallurgy gear shaping die according to claim 2, characterized in that: An upper mold plate (515) is provided above the mold shaping groove (513), and the upper mold plate (515) is located below the top plate (4). A lifting cylinder (516) is provided on the top of the upper mold plate (515), and the lifting cylinder (516) is fixedly installed on the top of the top plate (4).
4. The powder metallurgy gear shaping die according to claim 3, characterized in that: The bottom of the inner wall of the model shaping groove (513) is provided with a perforation, and a top core (517) is provided inside the perforation. The bottom of the top core (517) is fixedly mounted on a support plate (518), and the support plate (518) is fixedly mounted on the bottom of the inner wall of the base (2).
5. The powder metallurgy gear shaping die according to claim 1, characterized in that: The exhaust limiting portion (52) includes: An exhaust groove (521), wherein the exhaust groove (521) is provided on one side of the base (2); A mounting seat (524), the mounting seat (524) being arranged on one side of the support seat (1); C-shaped limiting plates (527), the C-shaped limiting plates (527) being fixedly mounted on the outer wall of the base (2), and having two sets in total; An exhaust hole (522) is provided on the inner wall of the exhaust groove (521), and the exhaust hole (522) movably penetrates the outer wall of the model shaping groove (513). A connecting baffle (523) is fixedly installed on the inner wall of the exhaust groove (521).
6. The powder metallurgy gear shaping die according to claim 5, characterized in that: An air pump (525) is fixedly mounted on the top of the mounting seat (524), and an air pump (526) is connected to the top of the air pump (525). The air pump (526) movably passes through the connecting baffle (523) and extends to the inside of the exhaust hole (522).
7. The powder metallurgy gear shaping die according to claim 6, characterized in that: The C-shaped limit plate (527) is internally slidably connected to a limit clamping U-shaped clamp (528), and there are two sets of limit clamping U-shaped clamps (528). The outer wall of the limit clamping U-shaped clamp (528) is movably penetrated by a two-way adjustment rod (529), and the two-way adjustment rod (529) movably penetrates the C-shaped limit plate (527) and extends to both sides of the C-shaped limit plate (527). One end of the two-way adjustment rod (529) is provided with a rotating handle (5210), and there are two sets of two sets, respectively located on both sides of the C-shaped limit plate (527).