A composite tooling for an arc-shaped heat exchanger

Abstract

This utility model discloses a composite tooling for an arc-shaped heat exchanger, relating to the field of heat exchanger tooling technology. It aims to solve the problem in existing technologies where excessive nozzle positional tolerances lead to assembly stress, vibration-induced cracks during use, and reduced product lifespan. The technical solution involves a support plate on a base plate, with a first lateral fixing mechanism on one side of the support plate. A fixing pin and a positioning mechanism are slidably connected to the first lateral fixing mechanism. A second lateral fixing mechanism is located on the other side of the support plate, with a fixing bolt at its top. Positioning mechanisms are located on the front and rear sides of the support plate. This utility model fixes the arc-shaped heat exchanger by inserting the fixing pin into the fixing screw hole and fixing the other end of the fixing bolt. The nozzle position is determined by controlling the sliding of the positioning pin. This allows for welding nozzles to arc-shaped heat exchangers in large quantities with reduced operational difficulty and minimal welding errors.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger tooling technology, specifically to a composite tooling for an arc-shaped heat exchanger. Background Technology

[0002] An arc-shaped fuel oil heat exchanger is required on the engine of a certain type of drone to exchange heat with the engine. The fuel oil heat exchanger is installed by rigid connection of stainless steel pipes. This places strict requirements on the relative position of the mounting holes of the fuel oil heat exchanger itself and the fuel oil inlet and outlet nozzles. The positional accuracy must be controlled within 0.1mm. If the positional accuracy of each nozzle is out of tolerance, there will be assembly stress. Vibration during use will cause cracks and affect the product life.

[0003] Therefore, it is necessary to design a set of welding, shaping and inspection fittings to simulate the installation state of the product on the engine. During the welding process, each component is positioned to limit its welding deformation. After welding, this fitting is used to correct the product and inspect the product assembly to ensure that the heat exchanger meets the usage requirements. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a composite tooling for an arc-shaped heat exchanger, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model discloses a composite tooling for an arc-shaped heat exchanger. The technical solution includes a base plate, a support plate on the base plate, a first lateral fixing mechanism on one side of the support plate, a fixing pin and a positioning mechanism slidably connected on the first lateral fixing mechanism, a second lateral fixing mechanism on the other side of the support plate, a fixing bolt on the top of the second lateral fixing mechanism, and positioning mechanisms on the front and rear sides of the support plate respectively.

[0006] As a preferred technical solution of this utility model, the upper end of the support plate is provided with an arc-shaped surface.

[0007] As a preferred technical solution of this utility model, a plurality of sliding holes are provided on the first side fixing mechanism, and a positioning pin is slidably connected in the sliding holes.

[0008] As a preferred technical solution of this utility model, the positioning mechanism includes a support column and a positioning pin. The support column is provided with a sliding hole, and the positioning pin is slidably connected in the sliding hole. The top of the support column has a locking bolt.

[0009] As a preferred technical solution of this utility model, the positioning pin includes a handle, a sliding shaft at the end of the handle, and a plug-in shaft at the end of the sliding shaft, and the sliding shaft is slidably connected inside the sliding hole.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model fixes the arc-shaped heat exchanger by inserting the fixing pin into the fixing screw hole and fixing the other end of the fixing bolt. Then, by inserting the nozzle into the positioning pin at the designated position, the position of the nozzle is determined by controlling the sliding of the positioning pin. Thus, when welding nozzles for arc-shaped heat exchangers in large quantities, welding with smaller errors is achieved while reducing the difficulty of operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 ; Figure 3 This is a schematic diagram of the fixing pin and positioning pin structure of this utility model; Figure 4 This is a schematic diagram of the arc-shaped heat exchanger structure of this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the arc-shaped heat exchanger structure of this utility model. Figure 2 ; Figure 6 This is a schematic diagram of the installed fixtures for the arc-shaped heat exchanger. Figure 1 ; Figure 7 This is a schematic diagram of the installed fixtures for the arc-shaped heat exchanger. Figure 2 .

[0012] In the diagram: 1. Base plate; 2. Support plate; 201. Arc-shaped surface; 3. First side fixing mechanism; 301. Fixing pin; 4. Second side fixing mechanism; 401. Fixing bolt; 5. Positioning pin; 501. Handle; 502. Sliding shaft; 503. Insertion shaft; 6. Support column; 601. Locking bolt; 9. Arc-shaped heat exchanger; 901. Fixing lug; 902. Fixing screw hole; 903. First nozzle; 904. Second nozzle. Detailed Implementation

[0013] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0014] like Figures 1 to 7As shown, this utility model discloses a composite tooling for an arc-shaped heat exchanger. The technical solution includes a base plate 1, a support plate 2 on the base plate 1, and an arc-shaped surface 201 on the upper end of the support plate 2. The arc-shaped surface 201 is used to fit the arc surface of the arc-shaped heat exchanger 9. A first lateral fixing mechanism 3 is provided on one side of the support plate 2. A fixing pin 301 and a positioning pin 5 are slidably connected on the first lateral fixing mechanism 3. The fixing pin 301 is used to insert into the fixing screw hole 902 to fix one side of the arc-shaped heat exchanger 9. The positioning pin 5 is used to insert into the nozzle to achieve position positioning. A second lateral fixing mechanism 4 is provided on the other side of the support plate 2. The body of the second lateral fixing mechanism 4 is a column, which is fixedly connected to the base plate 1. There is a fixing bolt 401 on the top, which is used to fix the fixing lug 901 of the arc-shaped heat exchanger 9 to the second lateral fixing mechanism. On structure 4, the other side of the arc-shaped heat exchanger 9 is fixed. Positioning mechanisms are provided on the front and rear sides of the support plate 2. The positioning mechanism includes a support column 6 and a positioning pin 5. The support column 6 is provided with a sliding hole, and the positioning pin 5 is slidably connected in the sliding hole. The top of the support column 6 has a locking bolt 601, which can lock the positioning pin 5 on both sides that are easy to slip off. The positioning pin 5 is used to insert with the nozzle. The positioning pin 5 includes a handle 501. The end of the handle 501 is provided with a sliding shaft 502. The end of the sliding shaft 502 is provided with a plug shaft 503. The sliding shaft 502 is slidably connected in the sliding hole. The plug shaft 503 is clearance-fitted with the nozzle. The diameter of the sliding shaft 502 is larger than the diameter of the plug shaft 503, so that the nozzle can be moved by pushing the positioning pin 5. The fixing pin 301 has the same structure as the positioning pin 5. The plug shaft 503 of the fixing pin 301 is clearance-fitted with the fixing screw hole 902.

[0015] The working principle of this utility model is as follows: When it is necessary to install nozzles on the arc-shaped heat exchanger 9, the arc-shaped heat exchanger 9 is first placed on the arc-shaped surface 201 of the support plate 2. Then, the fixing lug 901 on one side of the arc-shaped heat exchanger 9 is fixed with the fixing bolt 401 of the second side fixing mechanism 4. Then, the fixing pin 301 on the first side fixing mechanism 3 on the other side of the arc-shaped heat exchanger 9 is inserted into the fixing screw hole 902 of the arc-shaped heat exchanger 9. At this time, the arc-shaped heat exchanger 9 is fixed. Then, the first nozzle 903 and the second nozzle 904 are inserted into the insertion shaft 503 of the positioning pin 5. Then, the positioning pin 5 is pushed to move the first nozzle 903 and the second nozzle 904 to the position where they contact the body of the arc-shaped heat exchanger 9. Then, the nozzle and the body of the arc-shaped heat exchanger 9 are welded together to achieve the position positioning.

[0016] The mechanical connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It is common knowledge.

[0017] Components not described in detail in this article are existing technologies.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite tooling for an arc-shaped heat exchanger, comprising a base plate (1), characterized in that: A support plate (2) is provided on the base plate (1). A first side fixing mechanism (3) is provided on one side of the support plate (2). A fixing pin (301) and a positioning mechanism are slidably connected on the first side fixing mechanism (3). A second side fixing mechanism (4) is provided on the other side of the support plate (2). A fixing bolt (401) is provided on the top of the second side fixing mechanism (4). Positioning mechanisms are provided on the front and rear sides of the support plate (2).

2. The composite tooling for an arc-shaped heat exchanger according to claim 1, characterized in that: The upper end of the support plate (2) is provided with an arc-shaped surface (201).

3. The composite tooling for an arc-shaped heat exchanger according to claim 1, characterized in that: Multiple sliding holes are provided on the first side fixing mechanism (3), and the positioning pin (5) is slidably connected in the sliding holes.

4. The composite tooling for an arc-shaped heat exchanger according to claim 3, characterized in that: The positioning mechanism includes a support column (6) and a positioning pin (5). The support column (6) is provided with a sliding hole, and the positioning pin (5) is slidably connected in the sliding hole. The top of the support column (6) has a locking bolt (601).

5. The composite tooling for an arc-shaped heat exchanger according to claim 4, characterized in that: The positioning pin (5) includes a handle (501), the end of the handle (501) is provided with a sliding shaft (502), the end of the sliding shaft (502) is provided with a plug shaft (503), and the sliding shaft (502) is slidably connected inside the sliding hole.

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