Method for heating and recovering metal framework in pressurized state

Abstract

The invention relates to the technical field of rail transit metal rubber shock absorber recycling and remanufacturing, in particular to a method for heating and recycling a metal framework in a pressurized state, which comprises the following steps: S1, a metal rubber composite shock absorber to be treated is mounted on a recycling tool, and the recycling tool comprises a heating device; s2, vertical pressure or axial torsional force is applied to a metal core shaft of the to-be-treated metal-rubber composite shock absorber through a pressurizing rod of the recovery tool, and meanwhile, a heating device is started, so that a metal framework of the metal-rubber composite shock absorber is stripped from a rubber body; and S3, glue cleaning operation is conducted on the surface of the metal framework, and glue cleaning operation is conducted on the recovery tool. According to the method for recycling the metal framework in the scheme, heating can be conducted while pressurizing is conducted, and the stripping efficiency of rubber and the metal framework can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of recycling and remanufacturing of metal rubber vibration damping devices in rail transit, and specifically provides a method for heating and recycling a metal skeleton under a pressurized state. Background Art

[0002] In the rail transit sector, vehicle bogies incorporate composite vibration damping components made of a vulcanized metal-rubber composite. These components utilize the rubber's flexible deformation to provide flexible support for locomotive operation, dampen vibrations within the vehicle body, and enhance both vehicle performance and passenger comfort. Common rail-use metal-rubber vibration damping components include conical springs, rubber ball joints, rubber joints, and rubber rods. These metal-rubber composite components typically consist of a vulcanized connection between metal and rubber components, leveraging the rubber's high elasticity and strength to provide support and rigidity.

[0003] In actual application, metal-rubber vulcanizates are wearing parts and often need to be replaced as a whole after long-term operation. In metal-rubber vulcanizates, the rubber part is generally damaged due to aging and failure, while the metal part still has value for recycling and remanufacturing. The recycling of the metal skeleton of metal-rubber composite shock absorbers is of great significance to environmental protection, material reuse, resource conservation and technological innovation.

[0004] In the prior art, commonly used metal skeleton recycling methods include: 1) electromagnetic induction heating method, specifically using an electromagnetic induction heating device to heat the metal components in the metal-rubber composite product to a specific temperature, so that the adhesive between the metal component and the rubber component is ineffective, thereby achieving lossless separation of the rubber component from the metal component; 2) pyrolysis method, specifically placing the metal and rubber composite product in a reactor and heating it at the bottom of the reactor. After the rubber part is vaporized, it is condensed into fuel and discharged through a condenser. After the reaction is complete, it is naturally cooled, the metal component is removed, and the carbon particles attached to the surface are removed; 3) mechanical separation method, specifically peeling the metal skeleton and the rubber part by hand or mechanical tools; 4) incineration method, specifically based on the combustible nature of rubber and non-combustible nature of metal, the composite product is incinerated and the metal component is removed from the residual ash; 5) solvent dissolution method, specifically using a specific solvent to dissolve the rubber part.

[0005] The above methods in the prior art can all achieve the separation of metal and rubber in metal-rubber composite vibration damping parts, but there are problems such as low efficiency and low recovery rate. Therefore, how to design a method for recycling the metal skeleton in the metal-rubber composite vibration damping body with high recovery efficiency and high recovery rate is an urgent problem that needs to be solved. Summary of the Invention

[0006] To solve the above problems, the present invention provides a method for heating and recovering a metal skeleton under pressure, which can greatly improve the separation efficiency of metal and rubber in a metal-rubber composite vibration damping component, increase the recovery rate, shorten the heating time, and reduce energy consumption.

[0007] The present invention provides a method for heating and recovering a metal skeleton under pressure, comprising the following steps: S1: Install the metal-rubber composite shock absorber to be processed on a recycling tool, which includes a heating device; S2: applying vertical pressure or axial torsional force to the metal core shaft of the metal-rubber composite shock absorber to be processed through the pressure rod of the recovery tool, and simultaneously starting the heating device to separate the metal skeleton and the rubber body of the metal-rubber composite shock absorber; S3: Clean the glue on the surface of the metal frame and the recycling tooling.

[0008] Furthermore, the recycling tooling includes a recycling barrel, the metal-rubber composite shock absorber to be processed is installed on the recycling barrel, the lower end of the metal jacket in the metal-rubber composite shock absorber abuts against the upper end of the barrel wall of the recycling barrel, and the metal core shaft is accommodated in the recycling barrel.

[0009] Furthermore, the recycling tooling also includes a bottom support and an upper support, the bottom support and the upper support are connected by a support rod, and the upper support and the support rod are detachably connected; the recycling barrel and the metal-rubber composite shock absorber are located between the bottom support, the upper support, and the support rod.

[0010] Furthermore, a mounting through hole is provided at a corner of the upper support, and the support rod passes through the mounting through hole. The upper support is locked to the support rod by a locking bolt at at least one of the mounting through holes.

[0011] Furthermore, there are two locking bolts, which lock the upper support at the upper end and the lower end of the upper support respectively.

[0012] Furthermore, a central through hole is opened in the middle of the upper support, and the recovery tool also includes a pressure rod passing through the central through hole, and a pressure block is provided at the lower end of the pressure rod, and the pressure block abuts against the upper end of the metal core shaft.

[0013] Furthermore, a limit platform is provided on the middle portion of the pressing block extending upward, and the lower end of the pressure rod is located in the limit platform.

[0014] Furthermore, a guide platform is provided on the outer side of the middle through hole of the upper support, which extends upward. The guide platform includes an upper through hole connected to the middle through hole. The pressure rod is passed through the upper through hole, the middle through hole and the limit platform in sequence from the upper to the lower side of the guide platform.

[0015] Furthermore, the upper end of the pressure rod is provided with a handle parallel to the upper support.

[0016] Furthermore, a heating zone is formed between the barrel wall of the recovery barrel and the metal core shaft, the rubber body, and the metal outer sleeve, and the heating device is arranged in the heating zone.

[0017] Compared with the prior art, the present invention can achieve the following beneficial effects: the metal skeleton recovery method in this scheme can apply pressure while heating to accelerate the separation of rubber and metal, which can greatly shorten the heating time, so that the rubber is always under a fixed pressure, has low energy consumption, short recovery time, simple operation, and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 2 is a schematic diagram of the overall structure of a recycling tool provided according to an embodiment of the present invention; Figure 2 yes Figure 1 A top view of Figure 3 yes Figure 2 Cross-sectional view in the AA direction.

[0019] The reference numerals include: rubber body 1, metal core shaft 2, metal jacket 3, recovery barrel 4, bottom support 5, upper support 6, support rod 7, pressure block 8, locking bolt 9, limit platform 10, guide platform 11, handle 12, heating area 13, pressure rod 14. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 1-3 It should be understood that the specific embodiments described herein are only used to illustrate the present invention and do not constitute a limitation of the present invention.

[0021] A method for heating and recycling a metal skeleton under pressure comprises the following steps: S1: Install the metal-rubber composite shock absorber to be processed onto the recycling tooling, which includes a heating device. The recycling tooling includes a recycling barrel 4. The metal-rubber composite shock absorber to be processed is installed on the recycling barrel 4. The recycling tooling also includes a bottom support 5 and an upper support 6. The bottom support 5 and the upper support 6 are connected by a support rod 7. The recycling barrel 4 and the metal-rubber composite shock absorber are located between the bottom support 5, the upper support 6, and the support rod 7.

[0022] The upper support 6 is detachably connected to the support rod 7. An installation through hole is provided at the corner of the upper support 6. The support rod 7 passes through the installation through hole. The upper support 6 is locked to the support rod 7 by a locking bolt 9 at at least one installation through hole. When the metal-rubber composite shock absorber needs to be installed, the locking bolt 9 is loosened, the upper support 6 is removed from the support rod 7, and the metal-rubber composite shock absorber is placed in the recovery bin 4. After installing the metal-rubber composite shock absorber, the upper support 6 is installed on the support rod 7, and then the locking bolt 9 is tightened. The locking bolt 9 includes two, and the two locking bolts 9 respectively lock the upper support 6 at the upper end and the lower end of the upper support 6.

[0023] A central through hole is opened in the middle of the upper support 6, and the recovery tooling also includes a pressure rod 14 passed through the central through hole. The lower end of the pressure rod 14 is provided with a pressure block 8, and the pressure block 8 abuts against the upper end of the metal core shaft 2. The middle part of the pressure block 8 is extended upward to provide a limit platform 10, and the lower end of the pressure rod 14 is located in the limit platform 10.

[0024] A guide platform 11 is provided on the outer side of the middle through hole of the upper support 6, and the guide platform 11 includes an upper through hole connected to the middle through hole. The pressure rod 14 is passed through the upper through hole, the middle through hole, and the limit platform 10 in sequence from the top of the guide platform 11 downward. The limit platform 10 and the guide platform 11 can better limit the pressure rod 14 to ensure the stability of the pressure applied by the pressure rod 14. The upper end of the pressure rod 14 is provided with a handle 12 parallel to the upper support 6.

[0025] A heating zone 13 is formed between the barrel wall of the recycling barrel 4 and the metal core shaft 2, the rubber body 1, and the metal jacket 3. A heating device is arranged in the heating zone 13. The heating device includes a heating wire, and heating is performed by the heating wire. At the same time, the lower end of the metal jacket 3 in the metal-rubber composite shock absorber abuts against the upper end of the barrel wall of the recycling barrel 4, and the metal core shaft 2 is accommodated in the recycling barrel 4.

[0026] S2: Apply vertical pressure or axial torsional force to the metal core shaft 2 of the metal-rubber composite shock absorber to be processed through the pressure rod 14 of the recovery tool, and start the heating device at the same time to separate the metal skeleton and the rubber body 1 of the metal-rubber composite shock absorber. By applying shear force to the rubber body 1 by heating and pressurizing at the same time, the heating time can be greatly reduced, the recovery time can be shortened, the energy consumption can be reduced, and the metal skeleton and the rubber body 1 can be quickly separated.

[0027] S3: Clean the glue on the surface of the metal frame and the recycling tooling.

[0028] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0029] The above specific embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A method for heating and recovering a metal skeleton under pressure, characterized in that: The steps include: S1: Install the metal-rubber composite shock absorber to be processed on a recycling tool, which includes a heating device; S2: applying vertical pressure or axial torsional force to the metal core shaft (2) of the metal-rubber composite shock absorber to be processed through the pressure rod (14) of the recovery tool, and simultaneously starting the heating device, so that the metal skeleton of the metal-rubber composite shock absorber is peeled off from the rubber body (1); S3: Clean the glue on the surface of the metal frame and the recycling tooling.

2. The method for heating and recovering a metal skeleton under pressure according to claim 1, characterized in that: The recycling tooling comprises a recycling barrel (4), the metal-rubber composite shock absorber to be processed is mounted on the recycling barrel (4), the lower end of the metal jacket (3) in the metal-rubber composite shock absorber abuts against the upper end of the barrel wall of the recycling barrel (4), and the metal core shaft (2) is accommodated in the recycling barrel (4).

3. The method for heating and recovering a metal skeleton under pressure according to claim 2, characterized in that: The recycling tool further comprises a bottom support (5) and an upper support (6), wherein the bottom support (5) and the upper support (6) are connected via a support rod (7), and the upper support (6) and the support rod (7) are detachably connected; the recycling barrel (4) and the metal-rubber composite shock absorber are located between the bottom support (5), the upper support (6), and the support rod (7).

4. The method for recovering a metal skeleton by heating under pressure according to claim 3, characterized in that: A mounting through hole is provided at a corner of the upper support (6), and the support rod (7) passes through the mounting through hole. The upper support (6) is locked to the support rod (7) by a locking bolt (9) at at least one of the mounting through holes.

5. The method for heating and recovering a metal skeleton under pressure according to claim 4, characterized in that: The locking bolts (9) include two, and the two locking bolts (9) respectively lock the upper support (6) at the upper end and the lower end of the upper support (6).

6. The method for recovering a metal skeleton by heating under pressure according to claim 3, characterized in that: A central through hole is provided in the middle of the upper support (6), and the recovery tool further comprises a pressure rod (14) passing through the central through hole, a pressure block (8) is provided at the lower end of the pressure rod (14), and the pressure block (8) abuts against the upper end of the metal core shaft (2).

7. The method for heating and recovering a metal skeleton under pressure according to claim 6, characterized in that: A limiting platform (10) is provided in the middle of the pressing block (8) and extends upward, and the lower end of the pressure rod (14) is located in the limiting platform (10).

8. The method for heating and recovering a metal skeleton under pressure according to claim 6, characterized in that: A guide platform (11) is provided on the outer side of the middle through hole of the upper support (6) and extends upward. The guide platform (11) includes an upper through hole connected to the middle through hole. A pressure rod (14) is provided from the top of the guide platform (11) downward to the upper through hole, the middle through hole, and the limit platform (10) in sequence.

9. The method for recovering a metal skeleton by heating under pressure according to claim 8, characterized in that: The upper end of the pressure rod (14) is provided with a handle (12) parallel to the upper support (6).

10. The method for recovering a metal skeleton by heating under pressure according to claim 3, characterized in that: A heating zone (13) is formed between the barrel wall of the recovery barrel (4), the metal core shaft (2), the rubber body (1), and the metal jacket (3), and a heating device is arranged in the heating zone (13).

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