Fixture for laser hybrid welding fixation of plate exchange tube box
By designing tooling for laser composite welding of plate-changing boxes, the problems of low welding efficiency and poor weld quality of semi-collecting pipes and connecting plates are solved, and an efficient and stable welding process is achieved, which avoids welding deformation and reduces Installation difficulty.
Patent Information
- Application Number
- CN202420859977.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-24
AI Technical Summary
In the prior art, the semi-header tube and the connecting plate are inefficient in welding and the weld quality is poor, and the lack of stable and fixed tooling leads to welding deformation.
A tool for laser composite welding fixing of plate-changing tube box is designed, including base plate, tube box fixer, equipment workbench, connecting plate and pressurized plate, and half-header through tube box fixer and equipment operation table The connecting plate is docked and fixed, and the limits of the pressurized plate and the welding equipment operating table are used to ensure connection to avoid welding deformation.
It improves welding efficiency and weld quality, avoids welding deformation, reduces installation difficulty, and does not require additional tools to fix it. The overall tool is compact and easy to use.
Smart Images
Figure CN222448964U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plate-tube-box heat exchangers, in particular to a tooling for fixing a plate-tube-box by laser composite welding. Background Art
[0002] Fixed tube sheet heat exchanger is an energy-saving device that realizes heat transfer between materials. It is a process equipment widely used in petroleum, chemical, petrochemical, metallurgy, electric power, light industry, food and other industries. Fixed tube sheet heat exchanger consists of tube box, shell, tube sheet, tube and other parts. The tube box needs to be welded with the connecting plate. The existing welding method is to weld the two together by argon arc welding. Since the side of the semi-manifold type tube box is an arc structure, there is a lack of tooling to stabilize the semi-manifold. There are problems such as slow welding efficiency and deformation of the semi-manifold and the connecting plate during the welding process. Utility Model Content
[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a tooling for laser composite welding and fixing of the plate exchange tube box. Through this design, the problems of slow welding efficiency and poor weld quality during the welding process of the half-pipe are effectively solved.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the utility model comprises a bottom plate, a pipe box holder is provided on the bottom plate, an equipment workbench is provided on one side of the pipe box holder, a connecting plate is fixedly connected to the equipment workbench, the inner side of the connecting plate is located directly below the laser composite welding head, and a pressure plate is provided on the other side of the pipe box holder;
[0005] The pipe box fixer includes a plurality of positioning plates, the outer side of the positioning plate is fixedly connected to the pressure plate, the inner side of the positioning plate is provided with a baffle plate, the baffle plate is located directly below the equipment workbench, and the baffle plate and the positioning plate together form a pipe box fixing area.
[0006] Preferably, a positioning groove is provided on the positioning plate, and the height of the bottom end of the positioning groove is lower than that of the baffle.
[0007] Preferably, the baffle is slidably connected to the bottom plate, and a traction component for pulling the baffle inward is provided in the bottom plate.
[0008] Preferably, the traction assembly includes a guide rod, the guide rod is fixedly connected to the baffle, a through hole for the guide rod to slide is provided in the bottom plate, a baffle is fixedly connected to the end point of the guide rod, and a spring is sleeved on the guide rod inside the baffle.
[0009] Preferably, a pneumatic telescopic rod is provided on one side of the pressure plate.
[0010] Compared with the prior art, the utility model has the following outstanding advantages:
[0011] This device uses the pipe box fixer and the equipment operating table to butt and fix the half header and the connecting plate, thereby improving the welding efficiency. At the same time, during welding, the pressure plate and the welding equipment operating table are used to limit the connection between the half header and the connecting plate, thereby avoiding the problem of welding deformation and improving the quality of the weld.
[0012] The utility model does not require additional tools for fixing, thus reducing the difficulty of installation; the tool is overall small and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the utility model.
[0014] Figure 2 This is a schematic diagram of the forward structure of Example 1 of the utility model when in use.
[0015] Figure 3 This is a schematic diagram of the overall structure of Example 2 of the utility model.
[0016] Figure 4 This is a partial cross-sectional structural schematic diagram of Example 2 of the present utility model.
[0017] Numbers in the figure: 1. Base plate; 2. Pipe box holder; 201. Positioning plate; 202. Baffle; 203. Positioning groove; 204. Pulling assembly; 2041. Guide rod; 2042. Through hole; 2043. Baffle; 2044. Spring; 3. Equipment workbench; 4. Connecting plate; 5. Pressure plate; 6. Pneumatic telescopic rod. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the utility model are clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example 1
[0019] Please see attached Figure 1 and Figure 2 The present embodiment is a tooling for fixing a plate-changing tube box by laser composite welding: it comprises a base plate 1, a tube box fixer 2 is provided on the base plate 1, an equipment workbench 3 is provided on one side of the tube box fixer 2, a connecting plate 4 is fixedly connected to the equipment workbench 3, the inner side of the connecting plate 4 is located directly below the laser composite welding head, and a pressure plate 5 is provided on the other side of the tube box fixer 2.
[0020] The base plate 1 is installed on the welding platform, and the bottom of the base plate 1 is flush with the plane of the welding platform. The pipe box fixture 2 is located above the base plate 1. The pipe box fixing area inside the pipe box fixture 2 is used for placing and fixing the semi-manifold. The laser composite welding equipment workbench 3 is located on one side of the welding platform. A fixture for fixing the connecting plate 4 is installed on the equipment workbench 3. The laser composite welding head of the equipment workbench 3 is aligned with the side seam of the connecting plate 4. Before welding, the connecting plate 4 is docked with the semi-manifold in the pipe box fixture 2 through the equipment workbench 3. The equipment workbench 3 applies force to the connecting plate 4 toward one side of the pipe box fixture 2. At the same time, the pressure plate 5 applies force to the pipe box fixture 2 toward one side of the connecting plate 4 to avoid leaving a gap between the semi-manifold and the connecting plate 4 during welding, and to assist in fixing the semi-manifold and the connecting plate 4 during welding, thereby improving the welding quality and welding efficiency.
[0021] Since the end of the half-manifold is an arc-shaped structure, in order to increase the stability of the tube box fixer 2 in fixing the half-manifold, a positioning groove 203 is provided on the side of the positioning plate 201 in the tube box fixer 2. The curvature at the corner of the positioning groove 203 is the same as the curvature of the half-manifold. At the same time, the baffle 202 on the side of the positioning plate 201 is higher than the lowest point of the positioning groove 203. When fixing the half-manifold, the half-manifold can be just stuck in the positioning groove 203, which reduces the difficulty of installing the half-manifold and facilitates the user's operation. At the same time, it also makes the fixation of the half-manifold more stable without affecting the welding effect. Example 2
[0022] The structure is the same as the above embodiment. Figure 3 and Figure 4 As shown, the specific difference of this embodiment is that the baffle 202 is slidably connected to the bottom plate 1, and a traction component 204 for traction of the baffle 202 inward is provided in the bottom plate 1.
[0023] In order to improve the application scope of the device and make it applicable to other sizes similar to semi-manifolds, a traction assembly 204 is installed between the baffle 202 and the base plate 1, and the baffle 202 can be adjusted left and right relative to the positioning plate 201. When dealing with semi-manifolds of different sizes, the baffle 202 can automatically adjust the space in the pipe box fixing area according to the size of the semi-manifold, so that the pipe box fixer 2 can fix semi-manifolds of different specifications.
[0024] Furthermore, in order to facilitate the self-tightening of the baffle 202 on the half-pipe, a guide rod 2041 is provided on the baffle 202, and a baffle 2043 is provided at the end point of the guide rod 2041. The spring 2044 exerts a traction force on the baffle 2043 toward the side of the positioning plate 201, so that the baffle 2043 exerts a traction force on the guide rod 2041 and the baffle 202 toward the side of the positioning plate 201. In the initial state, the baffle 2043 and the positioning plate 201 are in a state of minimum spacing. When fixing a larger half-pipe, the baffle 202 needs to be pried apart. After the half-pipe is placed in the positioning groove 203, the baffle 202 is released to complete the self-clamping. At the same time, the tooling for fixing the connecting plate 4 on the equipment workbench 3 can be adjusted in vertical height, so that the connecting plate 4 and the half-pipe are maintained in a flush welding state.
[0025] An air pump is also provided on the welding platform, and two sets of pneumatic telescopic rods 6 are installed at the output end of the air pump. The pneumatic telescopic rods 6 have a reverse thrust on the pressure plate 5. By starting the telescopic rods, it is ensured that one side of the pressure plate 5 has sufficient supporting force to ensure that the positioning plate 201 and the pressure plate 5 will not be deformed by external force during the welding process.
[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A tool for laser composite welding and fixing of plate-to-tube box, characterized in that: The device comprises a bottom plate (1), a tube box holder (2) being provided on the bottom plate (1), a device workbench (3) being provided on one side of the tube box holder (2), a connecting plate (4) being fixedly connected to the device workbench (3), the inner side of the connecting plate (4) being located directly below the laser composite welding head, and a pressure plate (5) being provided on the other side of the tube box holder (2); The pipe box fixer (2) comprises a plurality of positioning plates (201), the outer sides of the positioning plates (201) are fixedly connected to the pressure plates (5), the inner sides of the positioning plates (201) are provided with baffles (202), the baffles (202) are located directly below the equipment workbench (3), and the baffles (202) and the positioning plates (201) together form a pipe box fixing area.
2. The tooling for laser composite welding and fixing of a plate-to-tube box according to claim 1 is characterized in that: The positioning plate (201) is provided with a positioning groove (203), and the bottom end of the positioning groove (203) is lower in height than the baffle plate (202).
3. The tooling for laser composite welding and fixing of a plate-to-tube box according to claim 1 is characterized in that: The baffle plate (202) is slidably connected to the bottom plate (1), and a traction component (204) for traction of the baffle plate (202) inwards is provided in the bottom plate (1).
4. The tooling for laser composite welding and fixing of a plate-to-tube box according to claim 3 is characterized in that: The traction assembly (204) comprises a guide rod (2041), the guide rod (2041) is fixedly connected to the baffle (202), a through hole (2042) for the guide rod (2041) to slide is provided in the bottom plate, a baffle (2043) is fixedly connected at the end point of the guide rod (2041), and a spring (2044) is sleeved on the guide rod (2041) inside the baffle (2043).
5. The tooling for laser composite welding and fixing of a plate-to-tube box according to claim 1 is characterized in that: A pneumatic telescopic rod (6) is provided on one side of the pressure plate (5).