Forming die for preparing Archimedes worm gear through powder metallurgy

Abstract

The utility model discloses a forming die for manufacturing an Archimedes worm gear through powder metallurgy, which comprises a base, the outer wall of the top of the base is fixedly connected with a lower die set and a pressing device, and the outer wall of the pressing device is in sliding connection with the inner wall of the lower die set; the utility model relates to the technical field of metallurgy forming, according to the downward pressing device and the lower module, the clamping blocks are pushed to slide inwards along the sliding rods and the sliding grooves by pressing the convex blocks above the clamping blocks, so that the clamping blocks are separated from the clamping grooves of the upper module, the upper module can be easily taken down, and when a new upper module is installed, only the connecting blocks need to be aligned and inserted in a sliding mode, and the convex blocks on the clamping blocks are loosened; when the upper die block needs to be replaced when worm gears with different thicknesses need to be pressed, operation is easy, convenient and rapid, and the middle die plate can be flexibly placed according to the requirements for pressing Archimedes worm gears with different thicknesses through cooperation of the positioning holes in the middle die plate and the positioning pins on the lower die block.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical forming technology, specifically a forming mold for preparing Archimedes worm gears using powder metallurgy. Background Technology

[0002] In the field of powder metallurgy, the forming mold of Archimedes worm gears plays a key role in the production of high-quality worm gear products. Archimedes worm gears are widely used in mechanical transmission systems, and their performance and precision directly affect the stability and reliability of the entire transmission system.

[0003] Currently, traditional powder metallurgy forming dies have some shortcomings. When facing the production needs of worm gears of different thicknesses, the process of changing the die modules is extremely cumbersome. It usually requires the use of multiple tools and a lot of time to disassemble and install related parts, which not only reduces production efficiency but also increases production costs and the risk of die damage due to improper operation. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a molding die for preparing Archimedes worm gears using powder metallurgy, which solves the problem of the extremely cumbersome process of changing die modules when producing worm gears of different thicknesses.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A molding die for preparing an Archimedes worm gear using powder metallurgy includes: a base, a lower mold assembly and a pressing device fixedly connected to the outer wall of the top of the base, the outer wall of the pressing device being slidably connected to the inner wall of the lower mold assembly; the pressing device includes a support frame, a support rod symmetrically fixedly connected to the outer wall of the support frame, a connecting rod rotatably connected to the inner wall of the support rod, a guide plate fixedly connected to the outer wall of the connecting rod, a hydraulic cylinder fixedly connected to the outer wall of the top of the support frame, a connecting block rotatably connected to the outer wall of the bottom of the hydraulic cylinder, a groove formed on the outer wall of the side of the connecting block, a sliding rod fixedly connected to the inner wall of the groove, a clamping block slidably connected to the outer wall of the sliding rod, a pressure spring fixedly connected to the outer wall of the clamping block, and an upper module slidably connected to the outer wall of the connecting block, the upper module having symmetrically formed clamping grooves on its inner wall.

[0009] Preferably, the inner wall of the clamping groove is slidably connected to the outer wall of the clamping block, the outer wall of the clamping block is slidably connected to the inner wall of the sliding groove, and the outer wall of the telescopic rod on the hydraulic cylinder is slidably connected to the inner wall of the top of the support frame. When the upper module needs to be replaced, press the protrusions above the symmetrically arranged clamping blocks to push the clamping blocks to slide inward along the sliding rod and the sliding groove, so that the clamping blocks are slidably separated from the clamping groove on the upper module. Then, slide the upper module along the outer wall of the connecting block to separate it. At this time, the pressure spring is also compressed and stored. Then, align the upper module that meets the specifications with the connecting block and slide it in. Then, release the protrusions on the clamping blocks. Through the elastic force released by the pressure spring, the clamping blocks are slidably locked into the clamping groove, and the replacement can be completed. The inner wall of the guide plate is slidably connected to the outer wall of the upper module, which plays a guiding role.

[0010] Preferably, the lower module includes a lower module, the outer wall of the top of the lower module is fixedly connected with a positioning pin, a middle template is provided above the lower module, and the outer wall of the middle template is provided with a positioning hole.

[0011] Preferably, the positioning pins are arranged in a ring around the central point of the lower module, the inner wall of the positioning hole is slidably connected to the outer wall of the positioning pin, and the outer wall of the top of the middle template is slidably connected to the outer wall of the bottom of the guide plate, providing a stable foundation for subsequent pressing. The middle template is set below the upper module, and the outer wall of the upper module is slidably connected to the inner wall of the middle template and the lower module. The upper module slides along the inner wall of the middle template toward the inner wall of the lower module, which can press the powder raw material in the lower module.

[0012] Preferably, a hydraulic rod is fixedly connected to the outer wall at the bottom of the base, and a release template is rotatably connected to the outer wall at the top of the hydraulic rod.

[0013] Preferably, the telescopic rod on the hydraulic rod is slidably connected to the inner wall of the base, and the outer wall of the demolding template is slidably connected to the inner walls of the lower module and the middle template. When the hydraulic rod is activated, its telescopic rod extends upward, driving the demolding template to move upward. The demolding template can smoothly push the formed Archimedes worm gear out from between the lower module and the middle template, completing the demolding.

[0014] (III) Beneficial Effects

[0015] This invention provides a molding die for preparing Archimedes worm gears using powder metallurgy. It has the following advantages:

[0016] (i) The pressing device pushes the clamping block along the slide rod and slide groove inward by pressing the protrusion on the upper clamping block, so that the clamping block is separated from the clamping groove of the upper module, and the upper module can be easily removed. When installing a new upper module, simply align it with the connecting block and slide it in, release the protrusion on the clamping block, and the pressure spring releases its elastic force to lock the clamping block into the clamping groove, thus completing the replacement. This quick module replacement design makes the operation simple and quick when the upper module needs to be replaced to press worm gears of different thicknesses, shortens the mold adjustment time, and further improves production efficiency.

[0017] (ii) The lower module, through the positioning hole on the middle template and the positioning pin on the lower module, can flexibly place the middle template according to the requirements of pressing Archimedes worm gears of different thicknesses. In addition, with the guide plate, the arc surface of the guide plate is used to guide and the connecting block is rotated to the hydraulic cylinder telescopic rod to ensure that the upper module can accurately contact the middle template along the guide plate and avoid the stamping position deviation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the lower module of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the pressing device of this utility model;

[0022] Figure 5 This is a schematic diagram of the connecting block of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the hydraulic cylinder of this utility model.

[0024] In the diagram: 1. Base; 11. Hydraulic rod; 12. Template release; 2. Lower module; 21. Lower module; 22. Positioning pin; 23. Middle template; 24. Positioning hole; 3. Pressing device; 31. Support frame; 32. Support rod; 33. Connecting rod; 34. Guide plate; 35. Hydraulic cylinder; 36. Connecting block; 37. Slide groove; 38. Slide rod; 381. Clamping block; 382. Pressure spring; 39. Upper module; 391. Clamping groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 This utility model provides a technical solution: a molding die for preparing an Archimedes worm gear by powder metallurgy, comprising: a base 1, a lower mold 2 and a pressing device 3 fixedly connected to the outer wall of the top of the base 1, the outer wall of the pressing device 3 being slidably connected to the inner wall of the lower mold 2; the pressing device 3 includes a support frame 31, a support rod 32 symmetrically fixedly connected to the outer wall of the support frame 31, a connecting rod 33 rotatably connected to the inner wall of the support rod 32, a guide plate 34 fixedly connected to the outer wall of the connecting rod 33, a hydraulic cylinder 35 fixedly connected to the outer wall of the top of the support frame 31, a connecting block 36 rotatably connected to the outer wall of the bottom of the hydraulic cylinder 35, a groove 37 is provided on the outer wall of the side of the connecting block 36, a sliding rod 38 is fixedly connected to the inner wall of the groove 37, a clamping block 381 is slidably connected to the outer wall of the sliding rod 38, a pressure spring 382 is fixedly connected to the outer wall of the clamping block 381, an upper module 39 is slidably connected to the outer wall of the connecting block 36, and clamping grooves 391 are symmetrically provided on the inner wall of the upper module 39.

[0027] The inner wall of the clamping groove 391 is slidably connected to the outer wall of the clamping block 381, and the outer wall of the clamping block 381 is slidably connected to the inner wall of the slide groove 37. The outer wall of the telescopic rod on the hydraulic cylinder 35 is slidably connected to the inner wall of the top of the support frame 31. When the upper module 39 needs to be replaced, press the protrusions above the symmetrically arranged clamping blocks 381 to push the clamping blocks 381 to slide inward along the slide rod 38 and the slide groove 37, so that the clamping blocks 381 and the clamping groove 391 on the upper module 39 slide apart. Then, the upper module 39 slides apart along the outer wall of the connecting block 36. At this time, the pressure spring 382 is also compressed and stored. Then, the upper module 39 that meets the specifications is aligned with the connecting block 36 and slidably inserted. Then, the protrusions on the clamping blocks 381 are released. Through the elastic force released by the pressure spring 382, ​​the clamping blocks 381 slide into the clamping groove 391, and the replacement is completed. The inner wall of the guide plate 34 is slidably connected to the outer wall of the upper module 39, which plays a guiding role.

[0028] The lower module 2 includes a lower module 21. A positioning pin 22 is fixedly connected to the outer wall of the top of the lower module 21. A middle template 23 is provided above the lower module 21. A positioning hole 24 is provided on the outer wall of the middle template 23.

[0029] Positioning pins 22 are arranged in a ring around the central point of the lower module 21. The inner wall of the positioning hole 24 is slidably connected to the outer wall of the positioning pin 22. The outer wall of the top of the middle template 23 is slidably connected to the outer wall of the bottom of the guide plate 34, providing a stable foundation for subsequent pressing. The middle template 23 is set below the upper module 39, and the outer wall of the upper module 39 is slidably connected to the inner wall of the middle template 23 and the lower module 21. The upper module 39 slides along the inner wall of the middle template 23 toward the inner wall of the lower module 21, which can press the powder raw material in the lower module 21.

[0030] A hydraulic rod 11 is fixedly connected to the outer wall at the bottom of the base 1, and a template 12 is rotatably connected to the outer wall at the top of the hydraulic rod 11.

[0031] The telescopic rod on the hydraulic rod 11 is slidably connected to the inner wall of the base 1, and the outer wall of the demolding template 12 is slidably connected to the inner walls of the lower module 21 and the middle template 23. When the hydraulic rod 11 is activated, its telescopic rod extends upward, driving the demolding template 12 to move upward. The demolding template 12 can smoothly push the formed Archimedes worm gear out from between the lower module 21 and the middle template 23, thus completing the demolding.

[0032] In use, the evenly mixed powder raw material is placed on the lower module 21 of the lower module 2, and then pressed and shaped by the pressing device 3. Finally, it is demolded by the demolding template 12 on the base 1.

[0033] Before pressing begins, the middle template 23 can be placed according to the different thicknesses to be pressed. The middle template 23 is accurately placed above the lower module 21 through the positioning hole 24 and the positioning pin 22 on the lower module 21, which also provides a stable foundation for subsequent pressing. Then, the evenly mixed powder raw material is placed in the lower module 21 of the lower module 2.

[0034] After the powder is placed, the connecting rod 33 is pushed to rotate along the support rod 32, causing the guide plate 34 to slide above the middle template 23. Then the pressing device 3 starts to work. The support frame 31 is fixed on the base 1, the hydraulic cylinder 35 is activated, and its telescopic rod extends downward, driving the connecting block 36 to move downward. At the same time, it also drives the upper module 39 outside the connecting block 36 to move downward together. As the hydraulic cylinder 35 continues to press down, the upper module 39 contacts the guide plate 34. Guided by the arc surface of the guide plate 34 and the rotational connection between the connecting block 36 and the upper telescopic rod of the hydraulic cylinder 35, the upper module 39 contacts the middle template 23 along the guide plate 34, preventing the stamping position from deviating. Then the upper module 39 slides along the inner wall of the middle template 23 toward the inner wall of the lower module 21, pressing the powder material in the lower module 21 to initially form the shape of an Archimedes worm gear.

[0035] After pressing, the hydraulic rod 11 at the bottom of the base 1 is activated, and its telescopic rod extends upward, driving the demolding template 12 to move upward. Since the outer wall of the demolding template 12 is slidably connected to the inner wall of the lower module 21 and the middle template 23, the demolding template 12 can smoothly push the formed Archimedes worm gear out from between the lower module 21 and the middle template 23, completing the demolding process and making it easy to remove the formed product.

[0036] When it is necessary to replace the upper module 39 to press turbines of different thicknesses, press the protrusions above the symmetrically arranged clamping blocks 381 to push the clamping blocks 381 to slide inward along the slide bar 38 and the slide groove 37, so that the clamping blocks 381 slides apart from the clamping groove 391 on the upper module 39. Then slide the upper module 39 along the outer wall of the connecting block 36 to separate it. At this time, the pressure spring 382 is also compressed and stored. Then, align the upper module 39 that meets the specifications with the connecting block 36 and slide it in. Then release the protrusions on the clamping blocks 381. Through the elastic force released by the pressure spring 382, ​​the clamping blocks 381 slide into the clamping groove 391, and the replacement is completed.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forming die for powder metallurgically producing an Archimedes worm gear, characterized in that Include: Base (1), the outer wall of the top of the base (1) is fixedly connected with a lower mold group (2) and a lower pressing device (3), and the outer wall of the lower pressing device (3) is slidably connected with the inner wall of the lower mold group (2); The lower pressing device (3) comprises a support frame (31), the outer wall of the support frame (31) is fixedly connected with a support rod (32) in a symmetrical manner, the inner wall of the support rod (32) is rotatably connected with a connecting rod (33), the outer wall of the connecting rod (33) is fixedly connected with a guide plate (34), the outer wall of the top of the support frame (31) is fixedly connected with a hydraulic cylinder (35), the outer wall of the bottom of the hydraulic cylinder (35) is rotatably connected with a connecting block (36), the outer wall of the side of the connecting block (36) is provided with a sliding groove (37), the inner wall of the sliding groove (37) is fixedly connected with a sliding rod (38), the outer wall of the sliding rod (38) is slidably connected with a clamping block (381), the outer wall of the clamping block (381) is fixedly connected with a compression spring (382), and the outer wall of the connecting block (36) is slidably connected with an upper mold group (39). The inner wall of the clamping groove (391) is slidably connected with the outer wall of the clamping block (381), the outer wall of the clamping block (381) is slidably connected with the inner wall of the sliding groove (37), the outer wall of the telescopic rod of the hydraulic cylinder (35) is slidably connected with the inner wall of the top of the support frame (31), and the inner wall of the guide plate (34) is slidably connected with the outer wall of the upper mold group (39).

2. A forming die for powder metallurgical production of Archimedes worm gear according to claim 1, characterized in that: The lower mold group (2) comprises a lower mold group (21), the outer wall of the top of the lower mold group (21) is fixedly connected with a positioning pin (22), and a middle mold plate (23) is arranged above the lower mold group (21). The outer wall of the middle mold plate (23) is provided with a positioning hole (24).

3. A forming die for powder metallurgy production of Archimedes worm gear according to claim 1, characterized in that: The positioning pin (22) is arranged in an annular array along the axial center point of the lower mold group (21), the inner wall of the positioning hole (24) is slidably connected with the outer wall of the positioning pin (22), the outer wall of the top of the middle mold plate (23) is slidably connected with the outer wall of the bottom of the guide plate (34), the middle mold plate (23) is arranged below the upper mold group (39), and the outer wall of the upper mold group (39) is slidably connected with the inner walls of the middle mold plate (23) and the lower mold group (21).

4. A powder metallurgy forming die for making an Archimedean worm gear according to claim 3, wherein: The outer wall of the bottom of the base (1) is fixedly connected with a hydraulic rod (11), and the outer wall of the top of the hydraulic rod (11) is rotatably connected with a demolding plate (12).

5. A powder metallurgy forming die for making an Archimedean worm gear according to claim 1, wherein: The telescopic rod on the hydraulic rod (11) is slidably connected with the inner wall of the base (1), and the outer wall of the demolding plate (12) is slidably connected with the inner walls of the lower mold group (21) and the middle mold plate (23).

6. A powder metallurgy forming die for making an Archimedean worm gear according to claim 5, wherein: ​

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