A spin-on product shaping jig in a metal injection molding process

Abstract

This utility model relates to the field of fixture technology, and in particular to a forming fixture for a swivel-type product in a metal injection molding process. It includes: a lower mold plate and a fixed mold fixing plate fixedly installed on the top of the lower mold plate; an inner wall forming assembly for forming the inner wall of the product; an outer wall forming assembly for forming the outer wall of the product; a upper mold plate and a moving mold fixing plate fixedly installed at the bottom of the upper mold plate. This utility model places the product inside the outer wall forming assembly via the inner wall forming assembly. Then, the upper mold plate, under the action of a forming press, simultaneously forms both the inner and outer walls of the product. This forming fixture can correct two dimensions at once, ensuring that the product dimensions are within the specified range, thus aiding in concentricity alignment during subsequent machining.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a spin-sleeve product shaping fixture in metal injection molding process. Background Technology

[0002] Metal powder injection molding (MIM) is a new type of near-net-shape forming technology in powder metallurgy that combines modern plastic injection molding technology with traditional powder metallurgy processes.

[0003] Due to the characteristics of its process, MIM injection molded products, especially those with complex structures and thin walls, are prone to deformation during high-temperature sintering. This is determined by the inherent characteristics of the MIM process. Figure 1 The sleeve product shown will deform its inner and outer walls during high-temperature sintering, resulting in the inner and outer circles of the sleeve product being out of concentricity and exhibiting an elliptical phenomenon, which will affect the concentricity alignment in subsequent machining. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a spinning sleeve product shaping fixture in the metal injection molding process, which has the advantage of simultaneously shaping the inner and outer walls of the product, thus helping to align the concentricity of the subsequent machining.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A shaping fixture for a support component product in a metal injection molding process includes:

[0007] The lower plate of the mold frame and the fixed mold fixing plate fixedly installed on the top of the lower plate of the mold frame;

[0008] An inner wall shaping assembly, wherein the inner wall shaping assembly is used to shape the inner wall of a product;

[0009] An outer wall shaping assembly, wherein the outer wall shaping assembly is used to shape the outer wall of a product;

[0010] The upper plate of the mold frame and the moving mold fixing plate fixedly installed at the bottom of the upper plate of the mold frame.

[0011] Preferably, the inner wall shaping assembly includes cylinder support plates fixedly installed at both ends of the fixed mold plate, cylinders fixedly installed on opposite sides of the two cylinder support plates, and cylinder push rods fixedly installed at the cylinder output end.

[0012] Furthermore, the outer wall shaping assembly includes a moving mold fixedly installed at the bottom of the moving mold fixing plate, a fixed mold fixedly installed at the top of the fixed mold fixing plate, a vertical plate fixedly installed at the top of the fixed mold fixing plate and located on one side of the fixed mold, and an L-shaped block fixedly installed at the top of the fixed mold fixing plate and located on the other side of the fixed mold.

[0013] Furthermore, the fixed mold has a lower groove at its top and the moving mold has an upper groove at its bottom. The lower groove and the upper groove together form a placement groove for placing the product.

[0014] Furthermore, the vertical plate has a first through hole, the diameter of which is larger than the diameter of one of the cylinder push rods.

[0015] Furthermore, the L-shaped block is provided with a second through hole, the diameter of which is larger than the diameter of another cylinder push rod, and the diameter of the other cylinder push rod is larger than the diameter of one of the cylinder push rods.

[0016] The top of the L-shaped block has a connecting groove with the same cross-section as the lower groove.

[0017] Furthermore, a first positioning post is fixedly installed on the top of the fixed mold, and a first positioning groove that cooperates with the first positioning post is opened inside the moving mold.

[0018] Furthermore, a second positioning post is fixedly installed on the top of the lower plate of the mold frame, and a positioning bushing that cooperates with the second positioning post is fixedly installed on the bottom of the upper plate of the mold frame.

[0019] The beneficial effects of this utility model are:

[0020] This invention places the product inside the outer wall shaping component through the inner wall shaping component. Then, the upper plate of the mold frame is pressed down by the shaping press to simultaneously shape the inner and outer walls of the product. This shaping fixture can shape and correct two dimensions at once, ensuring that the product size is within the range and providing assistance for concentricity alignment in subsequent machining. Attached Figure Description

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

[0022] Figure 1 This is a schematic diagram of a spinning sleeve product.

[0023] Figure 2 This is a three-dimensional schematic diagram of the product of this utility model.

[0024] Figure 3 This is a three-dimensional schematic diagram of the inner wall shaping component of this utility model.

[0025] Figure 4This is a top view of the inner wall shaping component of this utility model.

[0026] Figure 5 This is a utility model Figure 4 An enlarged schematic diagram of the structure at point A in the middle.

[0027] Figure 6 This is a bottom view of the upper plate of the mold frame of this utility model.

[0028] The markings in the diagram are as follows: 1. Lower mold base plate; 2. Fixed mold fixing plate; 3. Inner wall shaping component; 4. Outer wall shaping component; 5. Upper mold base plate; 6. Moving mold fixing plate; 101. Second positioning post; 301. Cylinder support plate; 302. Cylinder; 303. Cylinder push rod; 401. Moving mold; 402. Fixed mold; 403. Vertical plate; 404. L-shaped block; 405. First positioning post; 406. First positioning groove; 501. Positioning bushing; 4011. Upper groove; 4021. Lower groove. Detailed Implementation

[0029] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0031] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0032] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0033] Example

[0034] Please see Figure 2-6As shown, a spin-sleeve product shaping fixture in a metal injection molding process includes a lower mold plate 1 and a fixed mold fixing plate 2 fixedly installed on the top of the lower mold plate 1.

[0035] Inner wall shaping component 3, used to shape the inner wall of the product;

[0036] The outer wall shaping component 4 is used to shape the outer wall of the product.

[0037] The upper mold plate 5 and the moving mold fixing plate 6 are fixedly installed at the bottom of the upper mold plate 5. When in use, the upper mold plate 5 is installed on the forming press. The forming press is existing technology and will not be described in detail here.

[0038] This invention places the product inside the outer wall shaping component 4 through the inner wall shaping component 3. Then, the upper plate 5 of the mold frame is pressed down under the action of the shaping press, which can simultaneously shape the inner and outer walls of the product. Through this shaping fixture, two dimensions can be shaped and corrected at one time, ensuring that the product size is within the range, and providing assistance for concentricity alignment in subsequent machining.

[0039] The inner wall shaping assembly 3 includes cylinder support plates 301 fixedly installed at both ends of the fixed mold plate 2, cylinders 302 fixedly installed on one side of the two cylinder support plates 301 that are far apart from each other, and cylinder push rods 303 fixedly installed at the output end of the cylinders 302.

[0040] The vertical plate 403 has a first through hole, the diameter of which is larger than the diameter of one of the cylinder push rods 303, so that there will be no blockage when one of the cylinders 302 drives the cylinder push rod 303 connected to it.

[0041] The L-shaped block 404 has a second through hole. The diameter of the second through hole is larger than the diameter of the other cylinder push rod 303. The diameter of the other cylinder push rod 303 is larger than the diameter of one of the cylinder push rods 303. This way, when the other cylinder 302 drives the cylinder push rod 303 connected to it, there will be no blockage.

[0042] One of the cylinder push rods 303 has an inner diameter that matches the inner diameter of the product. The product is fitted onto the cylinder push rod 303, and the product is pushed to the shaping position by one of the cylinders 302. At the same time, another cylinder 302 drives another cylinder push rod 303 with a larger diameter to move to the position of contact with the side of the product, which can play a certain limiting role for the product.

[0043] The outer wall shaping component 4 includes a moving mold 401 fixedly installed at the bottom of the moving mold fixing plate 6, a fixed mold 402 fixedly installed at the top of the fixed mold fixing plate 2, a vertical plate 403 fixedly installed at the top of the fixed mold fixing plate 2 and located on one side of the fixed mold 402, and an L-shaped block 404 fixedly installed at the top of the fixed mold fixing plate 2 and located on the other side of the fixed mold 402.

[0044] The fixed mold 402 has a lower groove 4021 on its top and the moving mold 401 has an upper groove 4011 on its bottom. The lower groove 4021 and the upper groove 4011 together form a placement groove for placing products.

[0045] The top of the L-shaped block 404 has a connecting groove with the same cross-section as the lower groove 4021, and the connecting groove is connected to the second through hole.

[0046] The product is placed on the cylinder push rod 303. Under the action of one cylinder 302, the product is pushed towards the fixed mold 402. Under the action of the lower groove 4021, the movement of the product can be guided until the product moves to the shaping position. At the same time, another cylinder 302 drives another cylinder push rod 303 with a larger diameter to move to the contact position with the side of the product, which can play a certain limiting role on the product.

[0047] Then, the upper plate 5 of the mold frame moves downward under the action of the forming press. During the downward movement, the upper plate 5 of the mold frame can drive the moving mold fixing plate 6 and the moving mold 401 to move downward until the moving mold 401 contacts the fixed mold 402. At this time, with the cooperation of the upper groove 4011 and the lower groove 4021, the product is placed in the placement groove, and the moving mold 401 and the fixed mold 402 shape the outer wall of the product, while one of the cylinder push rods 303 shapes the inner wall of the product. Through this forming fixture, two dimensions can be shaped and corrected at one time to ensure that the product dimensions are within the range, which helps to find the concentricity of subsequent machining.

[0048] The top of the fixed mold 402 is fixedly installed with a first positioning post 405, and the interior of the moving mold 401 is provided with a first positioning groove 406 that cooperates with the first positioning post 405. With the cooperation of the first positioning post 405 and the first positioning groove 406, the moving mold 401 can play a positioning role when it is pressed down.

[0049] A second positioning post 101 is fixedly installed on the top of the lower plate 1 of the mold frame, and a positioning bushing 501 that cooperates with the second positioning post 101 is fixedly installed on the bottom of the upper plate 5 of the mold frame. With the cooperation of the second positioning post 101 and the positioning bushing 501, the upper plate 5 of the mold frame, the moving mold fixing plate 6 and the moving mold 401 can be positioned when they are pressed down.

[0050] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A spin-on product sizing fixture in a metal injection molding process, characterized by, include: The mold frame lower plate (1) and the fixed mold fixing plate (2) fixedly installed on the top of the mold frame lower plate (1); Inner wall shaping component (3), the inner wall shaping component (3) is used to shape the inner wall of the product; Outer wall shaping component (4), the outer wall shaping component (4) is used to shape the outer wall of the product; The upper plate of the mold frame (5) and the moving mold fixing plate (6) fixedly installed at the bottom of the upper plate of the mold frame (5).

2. The spin-on product sizing fixture in a metal injection molding process of claim 1, wherein, The inner wall shaping component (3) includes cylinder support plates (301) fixedly installed at both ends of the fixed mold plate (2), cylinders (302) fixedly installed on the opposite side of the two cylinder support plates (301), and cylinder push rods (303) fixedly installed at the output end of the cylinders (302).

3. The spin-on product sizing fixture in a metal injection molding process of claim 2, wherein, The outer wall shaping component (4) includes a moving mold (401) fixedly installed at the bottom of the moving mold fixing plate (6), a fixed mold (402) fixedly installed at the top of the fixed mold fixing plate (2), a vertical plate (403) fixedly installed at the top of the fixed mold fixing plate (2) and located on one side of the fixed mold (402), and an L-shaped block (404) fixedly installed at the top of the fixed mold fixing plate (2) and located on the other side of the fixed mold (402).

4. The spin-shear product shaping fixture in the metal injection molding process according to claim 3, characterized in that, The fixed mold (402) has a lower groove (4021) on its top and the moving mold (401) has an upper groove (4011) on its bottom. The lower groove (4021) and the upper groove (4011) together form a placement groove for placing products.

5. The spin-on product sizing fixture in a metal injection molding process of claim 4, wherein, The vertical plate (403) has a first through hole, the diameter of which is larger than the diameter of one of the cylinder push rods (303).

6. The spin-on product sizing fixture in a metal injection molding process of claim 5, wherein, The L-shaped block (404) has a second through hole, the diameter of which is larger than the diameter of another cylinder push rod (303), and the diameter of the other cylinder push rod (303) is larger than the diameter of one of the cylinder push rods (303). The top of the L-shaped block (404) has a connecting groove with the same cross-section as the lower groove (4021).

7. The spin-on product sizing fixture in a metal injection molding process of claim 3, wherein, The top of the fixed mold (402) is fixedly installed with a first positioning post (405), and the interior of the moving mold (401) is provided with a first positioning groove (406) that cooperates with the first positioning post (405).

8. The spin-shear product shaping fixture in the metal injection molding process according to claim 3, characterized in that, A second positioning post (101) is fixedly installed on the top of the lower plate (1) of the mold frame, and a positioning bushing (501) that cooperates with the second positioning post (101) is fixedly installed on the bottom of the upper plate (5) of the mold frame.

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