Centering welding clamp
By designing a centering welding fixture that adopts the three-point centering principle, the problems of coaxiality and gap uniformity between the shell and the end cap during welding are solved, and efficient welding positioning and the ability to adapt to products of different diameters is achieved.
Patent Information
- Application Number
- CN202421149783.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-24
AI Technical Summary
During the welding process, ensure the coaxiality between the housing and the end cap and the gap between the coil and the housing, especially suitable for products of different diameters.
A centering welding fixture is designed, adopting the three-point centering principle, and the precise positioning and fixing of the housing and end cover is achieved through the combination of rotating clamping disc, sliding adjustment plate, spring and clamping wheel, and through the adjustment clamp Wheels adapt to products of different diameters.
The concentric positioning of the shell and the end cap is achieved, the welding quality and working efficiency are improved, the structural stability and heat conduction efficiency of the product are ensured, and it is also suitable for products of different diameters.
Smart Images
Figure CN222520362U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding fixtures, in particular to a centering welding fixture. Background Art
[0002] Figure 5-6 This is a common vaporizer structure diagram. The shell is welded to the two end covers, and the middle spiral coil is welded and sealed to the end covers. The shell is the circulating water area, and the coil is the liquefied natural gas (LNG) circulation area. During operation, LNG flows from one end of the coil to the other end. The coil is immersed in water, and heat is exchanged with the water, heating the LNG in the coil, causing it to be vaporized and then output.
[0003] The welding of the shell and the end cover is a key link involving precision manufacturing and high quality requirements. In this process, we face multiple challenges, but the most core and critical one is undoubtedly to ensure the coaxiality of the shell and the end cover during welding and the uniformity of the gap between the coil and the shell.
[0004] First of all, the coaxiality of the shell and the end cover is the basis of welding. Coaxiality refers to the degree to which the center lines of the shell and the end cover completely overlap in three-dimensional space. If the coaxiality does not meet the standard, it will cause structural instability and uneven force in the welded product, seriously affecting the performance and service life of the product. Therefore, before welding, we need to accurately position and fix the shell and the end cover to ensure that they always maintain the correct position during the welding process.
[0005] Secondly, the uniformity of the gap between the coil and the shell is also crucial. The uniformity of the gap is directly related to the heat conduction efficiency and sealing performance of the product. If the gap is uneven, it will lead to uneven heat distribution and affect the heat dissipation effect of the product; at the same time, too large or too small a gap may affect the sealing of the product, resulting in leakage or performance degradation. Therefore, a three-point centering welding fixture is proposed. Utility Model Content
[0006] The utility model aims to provide a centering welding fixture to solve the following technical problems: how to ensure the coaxiality of a shell and an end cover during welding and how to be applicable to products with different diameters.
[0007] The purpose of the utility model can be achieved through the following technical solutions:
[0008] A centering welding fixture comprises a machine tool and a rotating clamping disk, wherein the rotating clamping disk is rotatably mounted on the machine tool, a plurality of slidable sliding adjustment plates are arranged at equal angles on one side of the rotating clamping disk, a spring is fixedly mounted inside the sliding adjustment plate, and a clamping wheel is fixedly mounted on the end of the spring.
[0009] As a further solution of the utility model: the machine tool is internally rotatably connected with a transmission shaft, one end of the transmission shaft is fixedly connected to a rotating clamping disk, an adjustment disk is rotatably connected to the transmission shaft, a plurality of arc grooves are equidistantly provided on the adjustment disk, an adjustment shaft is provided inside the arc groove, one end of the adjustment shaft passes through a rotating clamping disk to provide a through groove, and the end of the adjustment shaft is connected to a sliding adjustment plate through a connecting block.
[0010] As a further solution of the utility model: a gear three is fixedly mounted on the adjusting disk;
[0011] An adjusting rod is rotatably connected to the rotating clamping disk, one end of the adjusting rod passes through the rotating clamping disk, and a gear four is fixedly installed on the other end. The gear four is connected to the gear three through a chain.
[0012] As a further solution of the utility model: a driving motor is fixedly installed on one side of the machine tool, a gear 1 is fixedly installed on the output shaft of the driving motor, and the gear 1 is connected to a gear 2 sleeved on the transmission shaft through a gear chain.
[0013] As a further solution of the utility model: a placement groove is provided at the center of the rotating clamping disk.
[0014] As a further solution of the utility model: an annular slide rail is arranged at the contact point between the rotating clamping disk and the machine tool, and the rotating clamping disk slides in the annular slide rail.
[0015] Beneficial effects of the utility model:
[0016] The utility model uses the principle of three-point centering to design a tool or fixture specifically used for positioning the end cover and the shell. This tool accurately controls the positions of the three positioning points so that the end cover and the shell can be automatically aligned when placed to achieve concentricity. In actual operation, the staff only needs to place the end cover and the shell on the positioning tool, and through simple adjustment and fixation, the concentric positioning can be quickly completed. This process does not require complicated measurements and calculations, greatly simplifies the operating steps, and improves work efficiency. At the same time, due to the high positioning accuracy, the coaxiality of the end cover and the shell during the welding process is effectively guaranteed. This not only helps to improve the welding quality and reduce welding defects, but also avoids the troubles in subsequent processing and use caused by coaxiality problems.
[0017] At the same time, the utility model is suitable for products with different diameters by adjusting the clamping wheel. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The utility model is further described below in conjunction with the accompanying drawings.
[0019] Figure 1 It is a structural schematic diagram of the utility model from the front;
[0020] Figure 2 It is a schematic diagram of the structure of the utility model from the side;
[0021] Figure 3 It is a schematic diagram of the overall structure of the rotary clamping disc of the utility model;
[0022] Figure 4 It is a schematic diagram of the internal structure of the sliding adjustment plate of the utility model;
[0023] Figure 5 This is a common carburetor structure diagram;
[0024] Figure 6 yes Figure 5 Schematic diagram of the side structure.
[0025] In the figure: 1. machine tool; 2. rotating clamping plate; 3. slide rail; 4. sliding adjustment plate; 5. clamping wheel; 6. through groove; 7. connecting block; 8. gear one; 9. gear two; 10. transmission shaft; 11. adjustment plate; 12. arc groove; 13. adjustment shaft; 14. gear three; 15. chain; 16. gear four; 17. adjustment rod; 19. placement groove; 20. spring. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] See also Figure 1 and Figure 2 As shown, the utility model is a centering welding fixture, comprising a machine tool 1 and a rotating clamping disk 2, the rotating clamping disk 2 is rotatably installed on the machine tool 1, a plurality of slidable sliding adjustment plates 4 are arranged at equal angles on one side of the rotating clamping disk 2, a slide rail 3 is arranged on the rotating clamping disk 2, the sliding adjustment plate 4 is slidably connected to the slide rail 3, a spring 20 is fixedly installed inside the sliding adjustment plate 4, a clamping wheel 5 is fixedly installed on the end of the spring 20, an annular slide rail is arranged at the contact point between the rotating clamping disk 2 and the machine tool 1, the rotating clamping disk 2 slides in the annular slide rail to ensure the stability of the rotation of the rotating clamping disk 2.
[0028] By driving the sliding adjustment plate 4 to move, the clamping wheel 5 is driven to move, so that the products with different diameters can be positioned. At the same time, through the setting of the spring 20, the spring 20 can play a buffering role in the process of positioning the product, and has a certain protective effect on the product. This solution uses the synchronous three-point centering principle and a simple design to achieve concentricity between the end cover and the shell, thereby improving work efficiency and welding quality.
[0029] See also Figure 3 and Figure 4 As shown, the machine tool 1 is internally rotatably connected with a transmission shaft 10, one end of which is fixedly connected to a rotating clamping disk 2, and an adjusting disk 11 is rotatably connected to the transmission shaft 10, and a plurality of arc grooves 12 are equidistantly provided on the adjusting disk 11, and an adjusting shaft 13 is provided inside the arc groove 12, one end of which passes through a through groove 6 provided on the rotating clamping disk 2, and the end of the adjusting shaft 13 is connected to a sliding adjustment plate 4 through a connecting block 7.
[0030] A gear three 14 is fixedly mounted on the adjusting disk 11; an adjusting rod 17 is rotatably connected to the rotating clamping disk 2, one end of the adjusting rod 17 passes through the rotating clamping disk 2, and a gear four 16 is fixedly mounted on the other end, and the gear four 16 is connected to the gear three 14 through a chain 15.
[0031] The adjusting rod 17 is rotated by a wrench, and the adjusting rod 17 drives the gear four 16 to rotate. The gear four 16 drives the gear three 14 to rotate through the chain 15. The gear three 14 drives the adjusting disk 11 to rotate. During the rotation of the adjusting disk 11, the sliding adjustment plate 4 is driven to slide through the arc groove 12 and the adjusting shaft 13, and then the clamping wheel 5 is driven to move, so that positioning can be performed for products with different diameters.
[0032] A drive motor is fixedly installed on one side of the machine tool 1, and a gear 1 8 is fixedly installed on the output shaft of the drive motor. The gear 1 8 is connected to the gear 2 9 sleeved on the transmission shaft 10 through a gear chain. When the drive motor is started, the gear 1 8 is driven to rotate, and the gear 2 9 is driven to rotate through the gear chain, thereby driving the transmission shaft 10 to rotate.
[0033] A placement groove 19 is provided at the center of the rotating clamping disk 2. The placement groove 19 is provided to facilitate placing the product first and supporting it.
[0034] The working principle of the utility model is as follows: the adjusting rod 17 is rotated by a wrench, the adjusting rod 17 drives the gear 4 16 to rotate, the gear 4 16 drives the gear 3 14 to rotate through the chain 15, the gear 3 14 drives the adjusting disk 11 to rotate, and during the rotation of the adjusting disk 11, the sliding adjusting plate 4 is driven to slide through the arc groove 12 and the adjusting shaft 13, and then the clamping wheel 5 is driven to move, so that the positioning can be carried out for products with different diameters. The purpose of the utility model is to realize the welding of the shell and the end cover. During welding, the shell and the end cover are made coaxial to ensure that the gap between the coil and the shell is uniform.
[0035] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.
Claims
1. A centering welding fixture, comprising a machine tool (1) and a rotating clamping plate (2), characterized in that: A rotary clamping disc (2) is rotatably mounted on the machine tool (1); a plurality of slidable sliding adjustment plates (4) are arranged at equal angles on one side of the rotary clamping disc (2); a spring (20) is fixedly mounted inside the sliding adjustment plate (4); and a clamping wheel (5) is fixedly mounted at the end of the spring (20).
2. A centering welding fixture according to claim 1, characterized in that: The machine tool (1) is internally rotatably connected to a transmission shaft (10), one end of which is fixedly connected to a rotating clamping disk (2), and an adjustment disk (11) is rotatably connected to the transmission shaft (10), a plurality of arc grooves (12) are provided on the adjustment disk (11) at equal intervals, an adjustment shaft (13) is provided inside the arc groove (12), one end of which passes through a through groove (6) provided on the rotating clamping disk (2), and an end of the adjustment shaft (13) is connected to a sliding adjustment plate (4) via a connecting block (7).
3. A centering welding fixture according to claim 2, characterized in that: A gear three (14) is fixedly mounted on the adjusting disk (11); An adjusting rod (17) is rotatably connected to the rotating clamping disk (2), one end of the adjusting rod (17) passes through the rotating clamping disk (2), and the other end is fixedly mounted with a gear four (16), and the gear four (16) is connected to the gear three (14) via a chain (15).
4. A centering welding fixture according to claim 2, characterized in that: A drive motor is fixedly mounted on one side of the machine tool (1), a gear one (8) is fixedly mounted on the output shaft of the drive motor, and the gear one (8) is connected to a gear two (9) sleeved on a transmission shaft (10) via a gear chain.
5. A centering welding fixture according to claim 1, characterized in that: A placement groove (19) is provided at the center of the rotating clamping disk (2).
6. A centering welding fixture according to claim 1, characterized in that: An annular slide rail is provided at the contact point between the rotary clamping disc (2) and the machine tool (1), and the rotary clamping disc (2) slides in the annular slide rail.