Thin base plate for sintering isolation of friction plate

Abstract

The utility model discloses a thin backing plate for friction plate sintering isolation, which comprises an isolation plate, an outer fixing ring with an integral structure is arranged on the surface of the isolation plate, a detachable inner fixing ring is arranged on the isolation plate, and opposite stabilizing blocks are arranged on the inner side wall of the inner fixing ring. A pressing ring and a limiting ring are arranged on the surface, away from the outer fixing ring, of the isolation plate, a through hole is formed in the outer surface of the outer fixing ring, and an inclined hole is formed in the side face of the pressing ring. The adjacent isolation plates A and B are coaxially stacked, the isolation plates A are stacked on the upper sides of the isolation plates B, the pressing rings on the isolation plates A are embedded into the mounting grooves of the isolation plates B, the pressing rings press the annular powder blanks, the powder blanks are wrapped by the outer fixing rings, the inner fixing rings, the isolation plates and the pressing rings, the powder blanks are limited, and the powder blanks are prevented from deforming during sintering.

Description

Technical Field

[0001] The utility model belongs to the technical field of backing plates for friction plate sintering isolation, and particularly relates to a thin backing plate for friction plate sintering isolation. Background Technique

[0002] Powder metallurgy friction plates are manufactured by a sintering process. During the sintering process of the friction plates in a sintering furnace, a heat-resistant and pressure-resistant cast iron serves as a base for the separator plate. During the sintering process, a separator plate needs to be placed between each product powder blank to prevent the products from sticking together after sintering. The Chinese utility model authorized patent application number CN202220094368.9 discloses a sintering structure for copper-based powder metallurgy friction plates, and the powder metallurgy friction plate sintering technology is disclosed.

[0003] For the sintering of annular friction plate products, the separator plate plays a role in isolation between adjacent products. The traditional separator plate is in the shape of a thin circular plate. The annular powder embryo friction plates are placed on the thin circular plate and then put into a sintering furnace for heating and sintering. During sintering, the powder embryo is affected by high temperature and will deform. A single thin circular plate cannot limit the powder embryo, which will affect the sintering quality of the annular friction plate.

[0004] When the existing friction plate isolation products are used for powder embryos, in order to limit the powder embryos and avoid the problem of deformation and cracking during sintering, we hereby propose a thin backing plate for friction plate sintering isolation. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a thin backing plate for friction plate sintering isolation to solve the problem of limiting the powder embryo and avoiding deformation and cracking during sintering as proposed in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A thin backing plate for friction plate sintering isolation, including a separator plate. An outer fixing ring of an integral structure is provided on the surface of the separator plate, and the separator plate is welded to the outer fixing ring. A detachable inner fixing ring is provided on the separator plate. Opposite stabilizing blocks are provided on the inner side wall of the inner fixing ring. A pressing ring and a limiting ring are provided on the surface of the separator plate facing away from the outer fixing ring. The pressing ring, the limiting ring and the separator plate are welded into an integral structure. Through holes are provided on the outer surface of the outer fixing ring, and inclined holes are provided on the side surface of the pressing ring.

[0007] Preferably, the outer fixing ring and the inner fixing ring are coaxial, and the separator plate and the inner fixing ring are coaxial.

[0008] Preferably, the pressing ring and the limiting ring are coaxial, and the separator plate and the limiting ring are coaxial.

[0009] Preferably, a positioning groove is provided on the surface of the inner fixing ring facing away from the separator plate, and the limiting ring is matched with the positioning groove.

[0010] Preferably, an annular installation groove is formed between the outer fixing ring and the inner fixing ring.

[0011] Preferably, the pressing ring is matched with the installation groove, the inner diameter of the pressing ring is the same as the outer diameter of the inner fixing ring, and the outer diameter of the pressing ring is the same as the inner diameter of the outer fixing ring.

[0012] Preferably, the surfaces of the outer fixing ring and the inner fixing ring facing away from the isolation plate coincide, a rectangular limiting groove is formed on the bottom surface of the stabilizing block, and the stabilizing block is in a fan shape.

[0013] Preferably, the inclined holes are in an inclined state, the through holes on the outer side of the outer fixing ring are circumferentially distributed and evenly distributed, and the inclined holes on the outer side of the pressing ring are circumferentially distributed and evenly distributed.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] In the present utility model, adjacent A and B isolation plates are coaxially stacked, the A isolation plate is stacked on the upper side of the B isolation plate, the pressing ring on the A isolation plate is embedded in the installation groove of the B isolation plate, the pressing ring presses the annular powder embryo, the powder embryo is covered by the outer fixing ring, the inner fixing ring, the isolation plate and the pressing ring, and the powder embryo is limited, so as to avoid deformation of the powder embryo during sintering and adhesion between products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a front view structural diagram of the isolation plate of the present utility model;

[0018] Figure 3 is a sectional view structural diagram of the outer fixing ring of the present utility model;

[0019] In the figure: 1, isolation plate; 2, outer fixing ring; 3, inner fixing ring; 4, pressing ring; 5, stabilizing block; 6, limiting ring; 7, installation groove; 21, through hole; 31, positioning groove; 41, inclined hole; 51, limiting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer toFigures 1 to 3 , the present utility model provides a technical solution: a thin backing plate for friction plate sintering isolation, including an isolation plate 1, an outer fixing ring 2 and an inner fixing ring 3. During sintering, the annular friction plate powder blank is placed on the isolation plate 1 and is located in the installation groove 7 between the outer fixing ring 2 and the inner fixing ring 3. Then, the isolation plate 1 and the powder blank are stacked inside the sintering furnace. Adjacent A and B isolation plates 1 are coaxially stacked, with the A isolation plate 1 stacked on the upper side of the B isolation plate 1. The limiting ring 6 on the A isolation plate 1 is embedded in the positioning groove 31 on the B isolation plate 1, ensuring the accurate installation of adjacent A and B isolation plates 1. The pressing ring 4 on the A isolation plate 1 is embedded in the installation groove 7 of the B isolation plate 1, and the pressing ring 4 presses the annular powder blank. The powder blank is covered by the outer fixing ring 2, the inner fixing ring 3, the isolation plate 1 and the pressing ring 4, and the powder blank is limited to prevent deformation during sintering. The pressing ring 4 is embedded in the installation groove 7, and the through hole 21 is opposite to the inclined hole 41, allowing high-temperature gas to fill the through hole 21 and the inclined hole 41, without affecting the heating of the powder blank by the high-temperature gas and the sintering of the powder blank. When removing the isolation plate 1 and the sintered friction plate product, a tool rod for taking out the product can be inserted vertically. The bottom end of the tool rod is in a "T" shape. The bottom end of the tool rod is inserted vertically and passes through the center of the isolation plate 1. After the bottom end of the tool rod is moved down to an appropriate position and rotated, the end of the bottom end of the tool rod is installed in the limiting groove 51 on the stabilizing block 5, and then the tool rod is lifted vertically to generally remove the isolation plate 1 and the product.

[0022] In summary, adjacent A and B isolation plates 1 are coaxially stacked, with the A isolation plate 1 stacked on the upper side of the B isolation plate 1. The pressing ring 4 on the A isolation plate 1 is embedded in the installation groove 7 of the B isolation plate 1, and the pressing ring 4 presses the annular powder blank. The powder blank is covered by the outer fixing ring 2, the inner fixing ring 3, the isolation plate 1 and the pressing ring 4, and the powder blank is limited to prevent deformation during sintering.

[0023] Although the embodiments of the present utility model have been shown and described (see the above detailed description), for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A thin backing plate for friction plate sintering isolation, comprising an isolation plate (1), characterized in that: The surface of the isolation plate (1) is provided with an outer fixing ring (2) of an integral structure, the isolation plate (1) is provided with a detachable inner fixing ring (3), the inner side wall of the inner fixing ring (3) is provided with opposing stabilizing blocks (5), the surface of the isolation plate (1) facing away from the outer fixing ring (2) is provided with a pressure ring (4) and a limiting ring (6), the outer surface of the outer fixing ring (2) is provided with a through hole (21), and the side surface of the pressure ring (4) is provided with an inclined hole (41).

2. The thin backing plate for sintering isolation of friction plates according to claim 1, characterized in that: The outer fixing ring (2) and the inner fixing ring (3) are coaxial, and the isolation plate (1) and the inner fixing ring (3) are coaxial.

3. A thin backing plate for sintering isolation of friction plates according to claim 1, characterized in that: The pressure ring (4) and the limiting ring (6) are coaxial, and the isolation plate (1) and the limiting ring (6) are coaxial.

4. A thin backing plate for sintering isolation of friction plates according to claim 1, characterized in that: A positioning groove (31) is provided on the surface of the inner fixing ring (3) facing away from the isolation plate (1), and the limiting ring (6) cooperates with the positioning groove (31).

5. A thin backing plate for sintering isolation of friction plates according to claim 1, characterized in that: An annular mounting groove (7) is formed between the outer fixing ring (2) and the inner fixing ring (3).

6. A thin backing plate for sintering isolation of friction plates according to claim 5, characterized in that: The pressure ring (4) is matched with the mounting groove (7), the inner diameter of the pressure ring (4) is the same as the outer diameter of the inner fixing ring (3), and the outer diameter of the pressure ring (4) is the same as the inner diameter of the outer fixing ring (2).

7. A thin backing plate for sintering isolation of friction plates according to claim 1, characterized in that: The outer fixing ring (2) and the inner fixing ring (3) overlap with the surfaces facing away from the isolation plate (1); a rectangular limiting groove (51) is provided on the bottom surface of the stabilizing block (5); and the stabilizing block (5) is fan-shaped.

8. A thin backing plate for sintering isolation of friction plates, according to claim 1, characterized in that: The inclined holes (41) are in an inclined state, the through holes (21) outside the outer fixing ring (2) are distributed circumferentially, and the inclined holes (41) outside the pressure ring (4) are distributed circumferentially.

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