Sintering auxiliary jig for MIM (Metal Injection Molding) product

Abstract

The utility model discloses a sintering auxiliary jig of an MIM product. The sintering auxiliary jig comprises a bottom plate and a jig plate. Wherein the first surface of the jig plate abuts against the bottom plate, the second surface of the jig plate is provided with a supporting assembly, the second surface and the first surface are oppositely arranged, the supporting assembly is used for supporting an MIM product in the sintering process, and the pattern of the supporting assembly is the same as that of the MIM product. The sintering auxiliary jig can be used in the sintering process of the MIM product, and serious deformation and even breakage of the MIM product in the sintering process can be reduced.

Description

Technical Field

[0001] The present application relates to the field of tooling technology, in particular to a sintering auxiliary tooling for MIM (Metal Powder Injection Molding Technology) products. Background Art

[0002] With the development of science and technology and the continuous pursuit of MIM metal products by consumers, the structure of MIM products has become diversified and complicated, and has been widely used in the MIM industry. As consumers' experience with MIM products gradually improves, the structural complexity of our MIM parts has also increased synchronously. Due to the development of the MIM powder metallurgy industry, thin supporting products with complex structures have appeared, which are easy to break after degreasing and sintering, and the products are greatly deformed after sintering.

[0003] At present, ordinary sintering fixtures can only support relatively flat large surfaces of products and support the dimensions before sintering: they support relatively flat large surfaces of products and do not support the dimensions before sintering but support the dimensions after sintering. They cannot accurately support local positions before and after sintering, resulting in a large number of fractures, a large number of serious deformations and other defects in products during degreasing and sintering, resulting in low product yields. At the same time, the consistency of product dimensions cannot be guaranteed, and the final result can only be half the result with twice the effort. Utility Model Content

[0004] The present application provides a sintering auxiliary tooling for MIM products, which can reduce the serious deformation or even breakage of MIM products during the sintering process.

[0005] In order to solve the above technical problems, the present application provides, on one hand, a MIM product sintering auxiliary jig, comprising a base plate and a jig plate, wherein the first surface of the jig plate abuts against the base plate, and the second surface of the jig plate is provided with a support component, the second surface is arranged opposite to the first surface, and the support component is used to support the MIM product in the sintering process, and the pattern of the support component is the same as the pattern of the MIM product.

[0006] In some embodiments, the support assembly includes a first support member and a second support member, and the first support member and the second support member are respectively disposed at two ends of the tooling plate along a first direction.

[0007] In some embodiments, the first support member includes a plurality of fixing blocks, and the plurality of fixing blocks are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

[0008] In some embodiments, a groove is formed between two adjacent fixing blocks, and the bottom of the groove is used to support the MIM product in the sintering process.

[0009] In some embodiments, the cross-sectional shape of the groove includes a V-shape, a U-shape, a semicircle, or a square.

[0010] In some embodiments, one end of the fixing block is in the same plane as one end of the jig plate.

[0011] In some embodiments, the side of the tooling plate is in the same plane as the side of the base plate.

[0012] In some embodiments, the structure of the second support member is the same as the structure of the first support member.

[0013] In some embodiments, the base plate and the tooling plate are integrally formed or detachably connected.

[0014] In some embodiments, the tooling plate and the support assembly are integrally formed or detachably connected.

[0015] The sintering auxiliary jig of the MIM product provided in some embodiments of the present application includes a base plate and a jig plate, the first surface of the jig plate is in contact with the base plate, the second surface of the jig plate is provided with a support component, the second surface is arranged opposite to the first surface, and the support component is used to support the MIM product in the sintering process. The above-mentioned sintering auxiliary jig uses the base plate, the jig plate and the support component to jointly support the MIM product, which can reduce the possibility of deformation and / or fracture of the MIM product during the sintering process, ensure the consistency of the size of the MIM product, and improve the yield of the MIM product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 is a schematic diagram of a sintering auxiliary tool in some embodiments of the present application;

[0018] Figure 2 is a schematic diagram of a sintering auxiliary tool in some embodiments of the present application;

[0019] Figure 3 is a schematic diagram of a sintering auxiliary tool in some embodiments of the present application;

[0020] Figure 4 is a schematic diagram of a sintering auxiliary tool in some embodiments of the present application;

[0021] Figure 5 is a schematic diagram of a sintering device in some embodiments of the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0024] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0027] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0028] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0029] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0030] The preparation of MIM products involves the MIM process, in which the MIM process includes: metal powder + binder, mixing and granulation, injection molding, degreasing, sintering and post-processing. The purpose of sintering is to promote metallurgical bonding of metal powder and improve the strength index of MIM products. During the sintering process, the size of the formed blank (obtained after the degreasing process) will shrink significantly until it reaches the designed size.

[0031] In the related art, MIM products are sintered by laying them flat on a ceramic plate. Due to the large contact area between the MIM products and the ceramic plate during sintering, the edges of the MIM products are severely deformed after sintering, and the deformation direction is inconsistent. The appearance quality of the MIM products is poor, and the yield rate is low. It is very easy to have poor appearance and a high defective rate, which leads to increased production costs.

[0032] In order to solve any of the above technical problems, the present application provides a sintering auxiliary tooling for MIM products.

[0033] See also Figure 1 , Figure 1 1 is a schematic diagram of a sintering auxiliary jig in some embodiments of the present application, wherein the sintering auxiliary jig 10 comprises a base plate 101 and a jig plate 102. The first surface of the jig plate 102 abuts against the base plate 101, and a support component 103 is disposed on the second surface of the jig plate 102, the second surface being disposed opposite to the first surface, and the support component 103 is used to support the MIM product in the sintering process, and the pattern of the support component 103 is the same as that of the MIM product.

[0034] Among them, MIM products can be power interface parts, card trays, camera rings, buttons, hinges or headphone hinges, etc., without restriction here.

[0035] The sintering auxiliary jig 10 provided in some embodiments of the present application includes a base plate 101 and a jig plate 102, the first surface of the jig plate 102 is in contact with the base plate 101, and the second surface of the jig plate 102 is provided with a support assembly 103, the second surface is arranged opposite to the first surface, and the support assembly 103 is used to support the MIM product in the sintering process, and the pattern of the support assembly 103 is the same as the pattern of the MIM product. The above-mentioned sintering auxiliary jig 10 uses the base plate 101, the jig plate 102 and the support assembly 103 to support the MIM product, and the pattern of the support assembly 103 is the same as the pattern of the MIM product, so that the support assembly 103 is adapted to the MIM product, which can not only reduce the possibility of deformation and / or fracture of the MIM product during the sintering process, but also ensure the consistency of the size of the MIM product and improve the yield of the MIM product.

[0036] In some embodiments, the shape and size of the bottom plate 101 can be determined according to actual needs and are not limited here. In one application scenario, the length range of the bottom plate 101 is 120 mm, and the width range of the bottom plate 101 is 100 mm.

[0037] In some embodiments, the shape and size of the jig plate 102 can be determined according to actual conditions and are not limited here. In one application scenario, the length range of the jig plate 102 is 100 mm, and the width range of the jig plate 102 is 80 mm.

[0038] In some embodiments, the size of the bottom plate 101 is the same as or different from the size of the tooling plate 102. For example, the first surface of the tooling plate 102 is larger than the corresponding surface of the bottom plate 101.

[0039] It can be understood that when the size of the base plate 101 is the same as that of the tool plate 102, and the cross-section of the base plate 101 and the cross-section of the tool plate 102 are non-circular or non-square, the base plate 101 and the tool plate 102 can be arranged non-overlappingly, so that the MIM product can contact the base plate 101, the tool plate 102 and the support assembly 103 respectively, and the base plate 101, the tool plate 102 and the support assembly 103 are used to support the MIM product, so as to avoid breakage and / or deformation of the MIM product during the sintering process, ensure the consistency of the size of the MIM product, and improve the yield of the MIM product.

[0040] In some embodiments, the shape, size and quantity of the support assembly 103 disposed on the tooling plate 102 can be determined according to actual needs and are not limited here.

[0041] In some embodiments, the support assembly 103 includes a fixing block, a fixing ring, a support rod, a support frame or others, which are not limited here.

[0042] See also Figure 2 , Figure 2 1 is a schematic diagram of a sintering auxiliary jig 10 in some embodiments of the present application. The sintering auxiliary jig 10 includes a base plate 101 and a jig plate 102, the first surface of the jig plate 102 abuts against the base plate 101, and the second surface of the jig plate 102 is provided with a support assembly 103, the support assembly 103 includes a first support member 1031 and a second support member 1032, and the first support member 1031 and the second support member 1032 are respectively provided at both ends of the jig plate 102 along the first direction.

[0043] In some embodiments, the first support member 1031 includes a plurality of fixing blocks 201 , and the plurality of fixing blocks 201 are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

[0044] The number, shape, and size of the fixing blocks 201 included in the first support member 1031 can be determined according to actual conditions and are not limited here. In addition, when the first support member 1031 includes a plurality of fixing blocks 201, the shapes, sizes, and the like of any two fixing blocks 201 among the plurality of fixing blocks 201 are the same or different. For example, the length range of some fixing blocks 201 among the plurality of fixing blocks 201 is 16.71 mm, the width range is 15.63 mm, and the height range is 2 mm, and the length range of another part of the fixing blocks 201 is 15.63 mm, the width range is 12.52 mm, and the height range is 2 mm.

[0045] In some embodiments, see Figure 2 A groove 202 is formed between two adjacent fixing blocks 201, and the bottom of the groove 202 is used to support the MIM product in the sintering process. Specifically, a plurality of fixing blocks 201 are arranged on the jig plate 102 at intervals along the first direction, which can reduce the possibility of deformation and / or fracture of the MIM product during shrinkage, thereby improving the product yield of the MIM product.

[0046] In some embodiments, the number, size, and shape of the grooves 202 can be determined according to actual needs. Specifically, the size and shape of the grooves 202 can be set accordingly according to the size and shape of the MIM product, so that the grooves 202 can minimize the possibility of deformation and / or fracture of the MIM product during the sintering process, thereby improving the yield of the MIM product.

[0047] For example, the groove 202 is a V-shaped groove, a U-shaped groove, a semicircular groove or a square groove, that is, the cross-sectional shape of the groove 202 includes a V-shape, a U-shape, a semicircular shape or a square shape.

[0048] For example, the depth range of the groove 202 is 2 mm, and the width range of the groove 202 is 4.77 mm; or, the depth range of the groove 202 is 1.5 mm, and the width range of the groove 202 is 4 mm; for another example, the depth range of the groove 202 is 1 mm, and the width range of the groove 202 is 3 mm.

[0049] In some embodiments of the present application, the depth of the groove 202 is equal to the height of the fixing block 201 . In this case, the height of the fixing block 201 determines the depth of the groove 202 .

[0050] In other embodiments, the depth of the groove 202 is different from the height of the fixed block 201. Specifically, the depth of the groove 202 may be greater than the height of the fixed block 201. In this case, the groove 202 is composed of the fixed block 201 and the jig plate 102, or the groove 202 is composed of the fixed block 201, the jig plate 102 and the bottom plate 101; the depth of the groove 202 is less than the height of the fixed block 201. In this case, there is an additional placement block between two adjacent fixed blocks 201, one end of the placement block abuts against the jig plate 102, and the other end of the placement block abuts against the MIM product. The placement block and the fixed block 201 form the groove 202. In this case, the height of the placement block and the height of the fixed block 201 determine the depth of the groove 202. Among them, the preparation material, shape, quantity and size of the placement block can be determined according to actual conditions; the placement block is integrally formed with the fixed block 201, or the placement block is integrally formed with the jig plate 102.

[0051] In some embodiments, the structure of the second support member 1032 is the same as that of the first support member 1031. That is, the number, shape, and size of the fixing blocks 203 included in the second support member 1032 can be set accordingly according to the number, shape, and size of the fixing blocks 201 included in the first support member 1031.

[0052] A groove 204 is formed between two adjacent fixing blocks 203 , and the groove 204 is arranged corresponding to the groove 202 , that is, the shape and size of the groove 204 are arranged corresponding to the shape and size of the groove 202 .

[0053] In other embodiments, the structure of the second support member 1032 is different from that of the first support member 1031. At least one of the number, shape, and size of the fixing blocks 203 included in the second support member 1032 is different from the fixing blocks 201 of the first support member 1031. For example, the first support member 1031 includes three fixing blocks 201, and the second support member 1032 includes two fixing blocks 203; for another example, the first support member 1031 includes three fixing blocks 201 in the shape of cubes, and the second support member 1032 includes three fixing blocks 203 in the shape of cuboids.

[0054] When the second support member 1032 includes a plurality of fixing blocks 203 , a groove 204 is formed between two adjacent fixing blocks 203 ; at least one of a shape and a size of the groove 204 is different from that of the groove 202 .

[0055] It is understood that the shape and size of the fixing block 201 included in the first support member 1031 may be the same as or different from the shape and size of the fixing block 203 included in the second support member 1032. For example, the fixing blocks 201 included in the first support member 1031 are all cuboids, and the fixing blocks 203 included in the second support member 1032 are all cuboids.

[0056] In some embodiments of the present application, the sizes of the base plate 101, the jig plate 102 and the fixed blocks 201 and 203 included in the support assembly 103 can be set accordingly according to the size of the MIM product, so that the base plate 101 and the jig plate 102 can well support the MIM product, and the support assembly 103 can better support the MIM product during sintering, thereby minimizing the possibility of deformation and / or breakage of the MIM product during the sintering process and improving the yield of the MIM product.

[0057] In some embodiments, one end of the fixed block 201 is in the same plane as one end of the jig plate 102. That is, one side of the fixed block 201 / fixed block 203 is flush with one side of the jig plate 102 in the second direction, and the second direction is perpendicular to the first direction. It can be understood that the "end" of the fixed block 201 / fixed block 203 and the jig plate 102 in the same plane includes at least one, for example, one end of the fixed block 201 / fixed block 203 and one end of the jig plate 102 are in the same plane; for another example, both ends of the fixed block 201 / fixed block 203 are respectively in the same plane as both ends of the jig plate 102.

[0058] The position of the fixing block 201 / fixing block 203 on the jig plate 102 can be determined according to actual conditions. Specifically, the position of the fixing block 201 / fixing block 203 on the jig plate 102 can be set accordingly according to the shape of the MIM product to adapt to the MIM product.

[0059] In some embodiments, the side of the jig plate 102 is in the same plane as the side of the bottom plate 101. That is, one side of the jig plate 102 is flush with one side of the bottom plate 101 in the second direction, and the second direction is perpendicular to the first direction. It can be understood that the "side" of the jig plate 102 and the bottom plate 101 in the same plane includes at least one; for example, one side of the jig plate 102 is in the same plane as one side of the bottom plate 101; for another example, two side surfaces of the jig plate 102 are respectively in the same plane as two side surfaces of the bottom plate 101.

[0060] The position of the jig plate 102 on the bottom plate 101 can be determined according to actual conditions. Specifically, the position of the jig plate 102 on the bottom plate 101 can be set accordingly according to the shape of the MIM product to adapt to the MIM product.

[0061] In some embodiments, Figure 3 -① As shown, the first end 301 and the second end 302 of the jig plate 102 are not flush with the first end 401 and the second end 402 of the base plate 101 in the second direction (i.e., they are not in the same plane), and the third end 303 and the fourth end 304 opposite to each other on the jig plate 102 are flush with the third end 403 and the fourth end 404 of the base plate 101 in the second direction (i.e., they are in the same plane); a plurality of fixing blocks 201 are spaced apart at the first end 301 of the jig plate 102, and a plurality of fixing blocks 203 are spaced apart at the second end 302 of the jig plate 102.

[0062] In some embodiments, Figure 3 -② As shown, the first end 301 and the second end 302 of the jig plate 102 are not flush with the first end 401 and the second end 402 of the base plate 101 in the second direction (i.e., they are not in the same plane), and the third end 303 and the fourth end 304 on the jig plate 102 are flush with the third end 403 and the fourth end 404 of the base plate 101 in the second direction (i.e., they are in the same plane); a plurality of fixing blocks 201 are arranged at intervals along the third direction at the third end 303 of the jig plate 102, so that the fixing blocks 201 are flush with the base plate 101 in the second direction (i.e., they are in the same plane), and a plurality of fixing blocks 203 are arranged at intervals along the third direction at the fourth end 304 of the jig plate 102, so that the fixing blocks 203 are flush with the base plate 101 in the second direction (i.e., they are in the same plane).

[0063] In some embodiments, Figure 4 -① As shown in the figure, the first end 301, the third end 303 and the fourth end 304 of the jig plate 102 are respectively flush with the first end 401, the third end 403 and the fourth end 404 of the base plate 101 in the second direction, and the second end 302 of the jig plate 102 is not flush with the second end 402 of the base plate 101 in the second direction; a plurality of fixing blocks 201 are spaced apart at the first end 301 of the jig plate 102, so that the fixing blocks 201 and the base plate 101 are flush with each other in the second direction (i.e., are in the same plane), and a plurality of fixing blocks 203 are spaced apart at the second end 302 of the jig plate 102.

[0064] In some embodiments, Figure 4-② As shown, the first end 301, the third end 303 and the fourth end 304 of the jig plate 102 are respectively flush with the first end 401, the third end 403 and the fourth end 404 of the base plate 101 in the second direction, and the second end 302 of the jig plate 102 is not flush with the second end 402 of the base plate 101 in the second direction; a plurality of fixing blocks 201 are arranged at intervals along the third direction at the third end 303 of the jig plate 102, so that the fixing blocks 201 and the base plate 101 are flush with each other in the second direction (i.e., they are in the same plane), and a plurality of fixing blocks 203 are arranged at intervals along the third direction at the fourth end 304 of the jig plate 102, so that the fixing blocks 203 and the base plate 101 are flush with each other in the second direction (i.e., they are in the same plane).

[0065] It can be understood that the first direction corresponds to the X-axis, the second direction corresponds to the Y-axis, and the third direction corresponds to the Z-axis; the first direction corresponds to the Y-axis, the second direction corresponds to the X-axis, and the third direction corresponds to the Z-axis; or others, which are not limited here.

[0066] In other embodiments, the periphery of the fixing block 201 / the fixing block 203 and the periphery of the jig plate 102 are not in the same plane, that is, the periphery of the fixing block 201 / the fixing block 203 and the periphery of the jig plate 102 are not flush in the second direction.

[0067] In other embodiments, the periphery of the jig plate 102 and the periphery of the bottom plate 101 are not in the same plane, that is, the periphery of the jig plate 102 and the periphery of the bottom plate 101 are not flush in the second direction.

[0068] In some embodiments, the base plate 101 and the jig plate 102 are integrally formed or detachably connected. When the base plate 101 and the jig plate 102 are detachably connected, different jig plates 102 and / or base plates 101 can be replaced according to the shapes of different MIM products, and the position of the jig plate 102 on the base plate 101 can be dynamically adjusted to adapt to the MIM product, increasing the use scenarios of the jig plate 102 and the base plate 101. In addition, when the base plate 101 and / or the jig plate 102 are damaged, the damaged parts can be replaced in a targeted manner to save costs.

[0069] In some embodiments, the jig plate 102 and the support assembly 103 are integrally formed or detachably connected. When the support assembly 103 is detachably connected to the jig plate 102, different jig plates 102 and / or support assemblies 103 can be replaced according to the shapes of different MIM products, and the position of the support assembly 103 on the jig plate 102 can also be dynamically adjusted to adapt to the MIM product, increasing the use scenarios of the jig plate 102 and the support assembly 103. In addition, when the support assembly 103 and / or the jig plate 102 is damaged, the damaged parts can be replaced in a targeted manner to save costs.

[0070] In some embodiments, the base plate 101, the tool plate 102 and the support assembly 103 are made of the same material. For example, the base plate 101 is a ceramic base plate, the tool plate 102 is a ceramic tool plate, and the support assembly 103 is a ceramic support assembly.

[0071] In other embodiments, the materials used to prepare the base plate 101 , the jig plate 102 , and the support assembly 103 may also be different and may be determined based on actual conditions, which will not be described in detail here.

[0072] See also Figure 5 , Figure 5 It is a schematic diagram of a sintering device in some implementations of the present application. The sintering device 100 includes the sintering auxiliary tool 10 described in any of the above embodiments, which will not be described in detail here.

[0073] In some embodiments, the sintering device 100 includes a heating device or other devices, which are not limited herein. The processing device can heat the MIM product placed on the sintering auxiliary jig 10 .

[0074] In summary, the sintering auxiliary jig 10 provided in some embodiments of the present application utilizes the base plate 101, the jig plate 102 and the support assembly 103 to support the MIM product, which can reduce the possibility of deformation and / or breakage of the MIM product during the sintering process, ensure the consistency of the size of the MIM product, and improve the yield of the MIM product.

[0075] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A sintering auxiliary tool for MIM products, characterized in that: The sintering auxiliary tool comprises: Base plate; A jig plate, wherein the first surface of the jig plate is in contact with the base plate, and the second surface of the jig plate is provided with a support component, the second surface is arranged opposite to the first surface, the support component is used to support the MIM product in the sintering process, and the pattern of the support component is the same as the pattern of the MIM product.

2. The sintering auxiliary tool according to claim 1, characterized in that: The support assembly includes a first support member and a second support member, and the first support member and the second support member are respectively arranged at two ends of the tool plate along a first direction.

3. The sintering auxiliary tool according to claim 2, characterized in that: The first support member includes a plurality of fixing blocks, and the plurality of fixing blocks are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

4. The sintering auxiliary tool according to claim 3, characterized in that: A groove is formed between two adjacent fixing blocks, and the bottom of the groove is used to support the MIM product in the sintering process.

5. The sintering auxiliary tool according to claim 4, characterized in that: The cross-sectional shape of the groove includes V-shape, U-shape, semicircle or square.

6. The sintering auxiliary tool according to claim 3, characterized in that: One end of the fixing block and one end of the jig plate are in the same plane.

7. The sintering auxiliary tool according to claim 1, characterized in that: The side surface of the jig plate and the side surface of the bottom plate are in the same plane.

8. The sintering auxiliary tool according to any one of claims 2 to 6, characterized in that: The structure of the second supporting member is the same as that of the first supporting member.

9. The sintering auxiliary tool according to claim 1, characterized in that: The bottom plate and the jig plate are integrally formed or detachably connected.

10. The sintering auxiliary tool according to claim 1, characterized in that: The jig plate and the support assembly are integrally formed or detachably connected.

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