Multifunctional welding device for small structural parts
By designing a combination of a stand, a rotating device, and a fixing device, the problem of all-position welding of the cylinder bottom and lugs of a small hydraulic cylinder was solved, improving welding quality and efficiency and meeting the precise assembly welding requirements of the product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XCMG HYDRAULICS CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-21
AI Technical Summary
The existing welding devices for the cylinder bottom and lugs of small hydraulic cylinders cannot achieve all-position welding, resulting in poor weld quality. Furthermore, the welding of irregular lugs and cylinder bottoms is unstable and cannot meet product requirements.
A multi-functional welding device for small structural components was designed. It adopts a frame, a rotating device, a graduated disc and a fixing device, combined with a hand-cranked reducer and a stepper motor to realize multi-directional rotation and fixing of the workpiece. With the help of fastening bolts and pressure plates, it can meet the assembly welding requirements of different workpieces.
It enables all-position welding of small structural components, improves welding quality and efficiency, ensures stable assembly welding of irregularly shaped parts, and meets the product's dimensional and positional tolerance requirements.
Smart Images

Figure CN224526380U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering machinery technology, specifically a multi-functional welding device for small structural components. Background Technology
[0002] The weld structure of the cylinder bottom and lugs of small hydraulic cylinders, as well as the cylinder and rod, is usually a fillet weld. There is no universal welding equipment for this type of product, and most assembly and welding are carried out on simple workbenches or even on the ground. The welding conditions are relatively harsh, and horizontal welding easily leads to welding defects. Furthermore, some irregularly shaped lugs and cylinder bottoms cannot be precisely welded, resulting in significant deviations in post-weld dimensional and positional tolerances, which do not meet product requirements. Therefore, designing a welding device that ensures the welding quality of the cylinder bottom and lugs of this type of small hydraulic cylinder is particularly important.
[0003] Existing welding equipment for welding the bottom and lugs of small hydraulic cylinders is all horizontal, achieving welding by controlling axial rotation in the horizontal direction, and cannot perform all-position welding. There is no universal tooling for welding grooved cylinder bottoms and lugs. Currently, welding of the bottom and lugs of small hydraulic cylinders only allows for axial rotation, limiting the welding position. During continuous welding, the workpiece rotation speed is high and the welding heat input is low, making it prone to welding quality problems when performing fillet welds. There is no welding platform for grooved cylinder bottoms and lugs, resulting in workpiece instability during assembly welding, easily leading to defects such as incomplete penetration and incomplete fusion. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a multifunctional welding device for small structural components that is simple in structure and has good effect.
[0005] This utility model is achieved by the following technical solution: a multi-functional welding device for small structural parts, including a frame, on which a processing table is connected by a bracket, one end of the processing table is connected to a rotating device I, and a graduated disc II is vertically connected to the processing table in the horizontal direction. The processing table includes an assembly fixture and a fixing table. The assembly fixture is provided with a clamping and fixing device for fixing a grooved cylinder bottom or an earring, and the fixing table is provided with a fixing device for clamping the cylinder bottom or the earring. The fixing device is connected to the rotating device II, and the graduated disc I is vertically connected to the fixing device in the longitudinal direction.
[0006] Furthermore, the other end of the processing table is connected to the bracket via a fixed bayonet.
[0007] The rotating device I is a hand-cranked speed reducer.
[0008] The assembly fixture is equipped with a positioning fixture, and the positioning fixture and the assembly fixture are detachably connected.
[0009] The positioning fixture is positioned below the height of the fixed platform.
[0010] The positioning fixture is selected according to the different slots.
[0011] The clamping and fixing device includes fastening bolts and a pressure plate, wherein the pressure plate is clamped onto the workpiece by the fastening bolts.
[0012] The fixing device is a chuck.
[0013] The rotating device II is a stepper motor.
[0014] This utility model has the following advantages: The multi-functional welding device for small structural components of this utility model fixes the welding components with a chuck, and realizes the rotation of the workpiece in two directions with the help of a hand-cranked reducer and a stepper motor, so that the workpiece meets the requirements of ship-shaped welding and ensures the welding quality. At the same time, the replaceable assembly worktable, together with fastening bolts and pressure plates, meets the assembly welding requirements of grooved cylinder bottoms and lugs. This utility model provides favorable welding conditions for the rotary welding of small structural components or the assembly welding of parts, ensuring welding quality and improving welding efficiency. Attached Figure Description
[0015] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.
[0016] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0017] In the diagram: 1. Stand, 2. Fixing bayonet, 3. Assembly tooling table, 4. Scale disc I, 5. Fixing device, 6. Fixing table, 7. Rotating device I, 8. Rotating device II, 9. Fastening bolt, 10. Pressure plate, 11. Scale disc II, 12. Bracket, 13. Positioning.
[0018] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] like Figure 1The illustrated multifunctional welding device for small structural components includes a frame 1, on which a processing table is connected via a bracket 12. One end of the processing table is connected to a rotating device I7. A graduated disc II11 is vertically connected to the processing table in the horizontal direction. The processing table includes an assembly fixture 3 and a fixing table 6. The assembly fixture 3 is provided with a clamping and fixing device for fixing a grooved cylinder bottom or an earring. The fixing table 6 is provided with a fixing device 5 for clamping the cylinder bottom or an earring. The fixing device 5 is connected to a rotating device II8. A graduated disc I4 is vertically connected to the fixing device 5 in the longitudinal direction. This utility model discloses a multi-functional welding device for small structural components, comprising a frame, a support, and a processing table. Both ends of the processing table are fixed to the frame via the support. One end of the processing table passes through the support and is connected to a rotating device I. Driven by the rotating device I, the processing table can rotate around a horizontal axis. One end of the processing table is connected to a graduated disc II, which records the rotation angle of the processing table for subsequent processing. The processing table comprises two parts: an assembly fixture table and a fixing table. The assembly fixture table is used to process grooved cylinder bottoms or lugs and fixes the workpiece using a clamping and fixing device. The fixing table is used to process grooveless cylinder bottoms or lugs. A fixing device for fixing the workpiece is provided on the fixing table. Simultaneously, the fixing device is connected to the rotating device II, which allows the fixing device to rotate around a vertical axis under the action of the rotating device II. The fixing device is connected to the graduated disc I, which records the rotation angle of the fixing device for subsequent processing.
[0023] like Figure 1 The illustrated multifunctional welding device for small structural components has a processing table connected to a support 12 at one end via a fixing slot 2. The processing table in this invention is secured on the other side with a fixing slot to prevent movement of the structural components during welding.
[0024] like Figure 1 The invention illustrates a multi-functional welding device for small structural components. The rotating device I 7 is a hand-cranked reducer. The rotating device II 8 is a stepper motor. The rotating devices I and II of this invention can be either hand-cranked reducers or stepper motors, but are not limited to either.
[0025] like Figure 1The invention discloses a multi-functional welding device for small structural components. The assembly fixture 3 is equipped with a positioning fixture 13, which is detachably connected to the assembly fixture 3. The positioning fixture 13 is positioned below the height of the fixed platform 6. The positioning fixture 13 is selected according to the different slots. This invention's assembly fixture is used for processing grooved cylinder bottoms or lugs. To match workpieces with different slots, the assembly fixture is equipped with a detachable positioning fixture. The positioning fixture satisfies the pre-welding assembly requirements of the structural components, can be replaced, and can be used for welding various grooved cylinder bottoms and lugs. Furthermore, considering the length of the grooved workpiece, the positioning fixture is positioned below the height of the fixed platform for ease of operation.
[0026] like Figure 1 The invention relates to a multi-functional welding device for small structural components. The clamping and fixing device includes a fastening bolt 9 and a pressure plate 10. The pressure plate 10 is clamped onto the workpiece by the fastening bolt 9. This device achieves its clamping function through the cooperation of the fastening bolt and the pressure plate. In use, tightening the fastening bolt secures the workpiece to the pressure plate. After processing, loosening the fastening bolt releases the pressure plate, allowing the workpiece to be removed for convenient use.
[0027] like Figure 1 The invention relates to a multi-functional welding device for small structural components, wherein the fixing device 5 is a chuck. The fixing device of this invention is a chuck, but is not limited to a chuck.
[0028] The components of this invention are connected by bolts and can be disassembled and replaced. In use, a chuck is used to hold the cylinder bottom or lugs. A hand-cranked reducer drives the fixed table to rotate, adjusting the workpiece to a suitable welding angle for the boat-shaped weld. The angle is confirmed and recorded using graduated disc II for easy adjustment and fixing of process requirements. After completion, a stepper motor drives the chuck to rotate for continuous welding or assembly welding operations. The angle is recorded and adjusted using graduated disc I. The assembly worktable can fix the grooved cylinder bottom or lugs. Different tooling can be changed according to the shape of the groove. After adjusting the relative positions, it is fixed using fastening bolts and pressure plates. Then, the hand-cranked reducer is used to rotate it to the appropriate position for assembly welding.
[0029] This utility model discloses a multi-functional welding device for small structural components. A stepper motor drives a chuck, and a hand-cranked reducer controls the rotation of the fixed table for manual or continuous welding of workpieces. It enables all-position welding of various small ring-shaped structural components. The assembly worktable has detachable mounting slots, and the appropriate slot can be selected according to the shape of the workpiece. After fixing with bolts and pressure plates, it can also perform welding of irregularly shaped structural components. This utility model is powerful, simple to operate, and can perform welding of irregularly shaped components or all-position welding of round steel and seamless pipes.
[0030] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0031] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.
[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A multi-functional welding device for small structural components, characterized in that: The equipment includes a frame (1), on which a processing table is connected via a bracket (12). One end of the processing table is connected to a rotating device I (7). The processing table is vertically connected to a graduated disc II (11) in the horizontal direction. The processing table includes an assembly fixture (3) and a fixing table (6). The assembly fixture (3) is provided with a clamping and fixing device for fixing the grooved cylinder bottom or earring. The fixing table (6) is provided with a fixing device (5) for clamping the cylinder bottom or earring. The fixing device (5) is connected to a rotating device II (8). The fixing device (5) is vertically connected to a graduated disc I (4) in the longitudinal direction.
2. The multifunctional welding device for small structural components as described in claim 1, characterized in that: The other end of the processing table is connected to the bracket (12) via a fixed bayonet (2).
3. The multi-functional welding device for small structural components as described in claim 1, characterized in that: The rotating device I (7) is a hand-cranked reducer.
4. The multi-functional welding device for small structural components as described in claim 1, characterized in that: The assembly tooling table (3) is provided with a positioning tool (13), and the positioning tool (13) and the assembly tooling table (3) are detachably connected.
5. The multi-functional welding device for small structural components as described in claim 4, characterized in that: The position of the positioning fixture (13) is lower than the height of the fixed platform (6).
6. The multifunctional welding device for small structural components as described in claim 4, characterized in that: The positioning fixture (13) is selected according to the different slots.
7. The multifunctional welding device for small structural components as described in claim 1, characterized in that: The clamping and fixing device includes a fastening bolt (9) and a pressure plate (10), wherein the pressure plate (10) is clamped onto the workpiece by the fastening bolt (9).
8. The multifunctional welding device for small structural components as described in claim 1, characterized in that: The fixing device (5) is a chuck.
9. The multifunctional welding device for small structural components as described in claim 1, characterized in that: The rotating device II (8) is a stepper motor.