A bottom charging production line heat treatment part hanging tool

Abstract

This utility model belongs to the field of parts mounting fixtures, specifically relating to a mounting fixture for heat-treated parts in a bottom-loading production line. The fixture includes a base, partitions, a material frame, and a support frame. Each of the base, partitions, material frame, and support frame has a column-limiting hole at its center to allow a column to pass through. The base, as the bottom layer of the fixture, supports the material frame. The partitions and support frame are positioned above the base; the partitions support the material frame, and the support frame holds shaft-like parts. The distance between adjacent bases, partitions, and support frames is limited by sleeves fitted onto the columns. This utility model has the following advantages: the fixture structure can be modified according to actual usage requirements, and the modification process is simple; using this fixture can improve the loading capacity of the equipment, and it has a good loading effect for thin rod-like parts and cylindrical parts; the fixture structure is simple, highly adaptable, and can effectively reduce the operational difficulty for workers.

Description

Technical Field

[0001] This utility model belongs to the field of parts mounting fixtures, specifically relating to a mounting fixture for heat-treated parts in a bottom-loading production line. Background Technology

[0002] Heat treatment of metal parts involves placing the parts in a heating medium and heating them to a suitable temperature. After holding them at that temperature for a period of time, they are cooled at a specific rate. This process alters the chemical composition and microstructure of the material's surface or interior to achieve the desired properties. During the heating and cooling process, the thermal stress caused by the temperature difference between the inside and outside of the part, as well as the microstructural stress during phase transformation, can lead to distortions in the parts. For shaft parts, stress has a greater impact on their shape, making them prone to bending deformation after heat treatment. Severe deformation can even render the part unusable. While deformation after heat treatment can be corrected by straightening and allowing for machining allowances, this adds extra processing steps and production costs. Furthermore, traditional heat treatment racks often lack sufficient mounting points for shaft parts, leading to difficulties in loading them into the furnace and limiting the capacity. Utility Model Content

[0003] The purpose of this invention is to provide a mounting fixture for heat-treated parts in a bottom-loading production line, which minimizes the deformation of shaft parts during the heat treatment process and overcomes the drawback of existing heat treatment fixtures having a small furnace loading capacity.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a mounting fixture for heat-treated parts in a bottom-loading production line, comprising a base, a partition plate, a material frame, and a support frame; a column limiting hole for a column to pass through is provided in the center of the base, partition plate, material frame, and support frame; the base serves as the bottom layer of the fixture and is used to support the material frame; the partition plate and support frame are both disposed above the base, the partition plate being used to support the material frame, and the support frame being used to place shaft-like parts; the distance between adjacent bases, partition plates, and support frames is limited by sleeves fitted onto the columns.

[0005] Preferably, both the base structure and the partition structure are hollow honeycomb-shaped.

[0006] Preferably, several expansion joints are evenly provided on the edges of the partition plate and the support frame.

[0007] Preferably, several through holes are provided around the edges of the base, partition, material frame and support frame to allow the columns to pass through.

[0008] Preferably, the material frame has a mesh structure.

[0009] Preferably, the support frame has a circular through hole and a square through hole. The circular through hole is used to load slender rod parts, and the square through hole is used to load cylindrical parts.

[0010] Preferably, the tooling is made of heat-resistant steel.

[0011] Preferably, the bottom of the column is circular and is fixed to the base by welding; the part of the column other than the bottom is a cross-shaped structure.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The tooling structure can be modified according to actual usage requirements, and the modification process is simple;

[0014] 2. During the heat treatment process, using this tooling can greatly improve the loading capacity of the equipment. In addition, it has a good loading effect on thin rod-shaped parts and cylindrical parts.

[0015] 3. The fixture has a simple structure and can be quickly disassembled to cope with different usage environments. It not only reduces the deformation of shaft parts, but also has strong adaptability to the mounting of parts of different shapes and sizes, which can greatly increase the amount of parts that can be mounted and effectively reduce the difficulty of operation for workers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the base structure in an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the partition structure in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the material frame structure in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the support frame structure in an embodiment of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0022] Figure 1-6 In the middle, 1. base; 2. column; 3. sleeve; 4. partition plate; 5. material frame; 6. support frame; 7. expansion joint. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-6The present invention is further described in detail as follows: A fixture for mounting heat treatment parts in a bottom-loading production line includes a base 1, a column 2, a sleeve 3, a partition 4, a material frame 5, and a support frame 6. To increase the service life of the fixture, it is made of heat-resistant steel as a whole, thereby reducing the risk of deformation and cracking during use.

[0024] Specifically,

[0025] like Figure 1 As shown, the base 1 has a hollow honeycomb structure, which can effectively improve the stability of the rack when mounting a large number of parts, reduce the weight of the rack, and effectively reduce tooling deformation. A column limiting hole is left in the center of the base 1, and the column 2 is connected to the base through the limiting hole. The base 1 and the column 2 are connected together by welding or bolt fixing.

[0026] The bottom of column 2 is cylindrical, and the rest of the position is a cross-shaped structure. In order to increase the stability and loading capacity of the tooling, a column is set in the center of the tooling, and four columns are evenly distributed on the outside. The included angle between the four edge columns is 90°.

[0027] The sleeve 3 is a hollow cylinder, which is inserted into the column 2 during use to support the partition plate 4 and adjust the distance between two adjacent partition plates 4.

[0028] like Figure 2 As shown, the partition 4 is a hollow honeycomb structure, which can remain stable during heat treatment, and four expansion joints 7 are evenly opened on the edge to release heat treatment stress.

[0029] like Figure 3 As shown, the material frame 5 is made of steel wire woven into a mesh structure, which facilitates the loading of parts and the flow of heat during heat treatment, as well as the full contact between the parts and the quenching medium during quenching.

[0030] like Figure 4 As shown, the support frame 6 has a circular and square structure inside. The circular structure is convenient for loading slender rod parts, while the square structure is convenient for loading cylindrical parts with larger diameters. To increase structural stability, four expansion joints 7 are evenly opened on the edge to release heat treatment stress.

[0031] As a preferred embodiment of this invention, the circular and square structures and their sizes inside the support frame 6 can be adjusted according to the actual parts.

[0032] As a preferred embodiment of this invention, the tooling can be adjusted in terms of the number and distribution of the material frames and support frames according to actual usage requirements.

[0033] In a preferred embodiment of this invention, the column 2 is fixed to the base 1 by welding. The bottom layer can be directly placed into the material frame 5. If it is necessary to increase the number of material frames 5, sleeves 3 of the same height need to be placed in the five columns 2, then a partition plate 4 is placed, and then the material frame 5 is placed into the column 2 and placed on the partition plate 4. Example

[0034] like Figure 5 As shown, a heat treatment parts mounting fixture for a bottom-loading production line is made of high-temperature resistant stainless steel. The fixture includes a base 1, columns 2, sleeves 3, partitions 4, and material frames 5. The base 1, columns 2, sleeves 3, and partitions 4 are made of high-temperature resistant alloy, and the material frames 5 are woven from low-carbon steel wire. Five columns 2 are respectively embedded into five pre-drilled round holes on the base 1 and then fixed by welding. The first layer of material frames 5 is supported by the base 1, and the material frames 5 are inserted through the columns 2 and placed on the base 1. To facilitate increasing the number of material frames 5 layers, sleeves 3 with a total height of 300~500mm are fitted onto each of the five columns 2. Then, partitions 4 and material frames 5 are successively inserted through the columns 2 and placed on the sleeves 3, for a total of three layers of material frames 5. During heat treatment mounting, parts can be directly placed in the material frames 5. Example

[0035] like Figure 6 As shown, a heat treatment parts mounting fixture for a bottom-loading production line is made of high-temperature resistant stainless steel. The parts mounting fixture includes a base 1, columns 2, sleeves 3, partitions 4, material frames 5, and a support frame 6. The base 1, columns 2, sleeves 3, partitions 4, and support frame 6 are made of high-temperature resistant alloy. The material frame 5 is woven from low-carbon steel wire. Five columns 2 are respectively embedded in five pre-drilled round holes on the base and then fixed by welding. The first layer of material frames 5 is supported by the base 1. The material frames 5 are inserted through the columns 2 and placed on the base 1. To facilitate increasing the number of material frames 5 layers, sleeves 3 with a total height of 300~500mm are respectively inserted into the five columns 2. Then, the partitions 4 and material frames 5 are successively inserted through the columns 2 and placed on the sleeves 3, for a total of two layers of material frames 5. Continue to insert the sleeve 3 with a total height of 300~500mm, and then place the support frame 6 through the column 2 on the sleeve 3. During heat treatment, ordinary parts can be placed directly in the material frame 5, and shaft parts and cylindrical parts can be directly passed through the support frame 6.

Claims

1. A mounting fixture for heat-treated parts in a bottom-loading production line, characterized in that: It includes a base, a partition, a material frame, and a support frame; each of the base, partition, material frame, and support frame has a column limiting hole at its center to allow a column to pass through; the base serves as the bottom layer of the tooling and is used to support the material frame; the partition and support frame are both located above the base, with the partition supporting the material frame and the support frame placing shaft-like parts; the distance between adjacent bases, partitions, and support frames is defined by sleeves fitted onto the columns.

2. The mounting fixture for heat-treated parts in the bottom-loading production line according to claim 1, characterized in that: Both the base structure and the partition structure are hollow honeycomb-shaped.

3. The mounting fixture for heat-treated parts in the bottom-loading production line according to claim 1, characterized in that: Several expansion joints are evenly distributed along the edges of the partition and support frame.

4. The mounting fixture for heat-treated parts in the bottom-loading production line according to claim 1, characterized in that: Several through holes are provided around the edges of the base, partition, material frame and support frame to allow the columns to pass through.

5. The mounting fixture for heat-treated parts in the bottom-loading production line according to claim 1, characterized in that: The material frame has a mesh structure.

6. The mounting fixture for heat-treated parts in the bottom-loading production line according to claim 1, characterized in that: The support frame has circular and square through holes. The circular through holes are used to load slender rod parts, and the square through holes are used to load cylindrical parts.

7. The mounting fixture for heat-treated parts in the bottom-loading production line according to claim 1, characterized in that: The tooling is made of heat-resistant steel.

8. The mounting fixture for heat-treated parts in the bottom-loading production line according to claim 1, characterized in that: The bottom of the column is circular and is fixed to the base by welding; the part of the column other than the bottom is a cross-shaped structure.

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