Workpiece clamping structure for metal welding machine

Abstract

The utility model discloses a workpiece clamping structure of metal welding machine, including bottom plate, support station, locating presser and drive mechanism, wherein, support station swing joint is in bottom plate, and locating presser is swing joint in bottom plate through drive mechanism, and drive mechanism includes two symmetrical first drive assembly, second drive assembly and connecting component, wherein, second drive assembly swing joint is in bottom plate through two symmetrical first drive assembly, and connecting component swing joint is in second drive assembly, and with locating presser is connected. Thus, adopt integrated double drive and lever force amplification to compress, quick lifting and accurate compression adjustment, cooperate the unobstructed operation cavity of locating presser, increase welder accessibility while fixing workpiece, effectively avoid clamping interference, and can work with rotating support station, improve the welding quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of welding fixtures, and in particular to a workpiece clamping structure for a metal welding machine. Background Technology

[0002] The workpiece clamping structure of a metal welding machine is a key component of the welding equipment used to position, fix and support the workpiece to be welded. It is a mechanical device used to accurately position and reliably fix the workpiece to be welded.

[0003] In related technologies, the workpiece clamping devices of existing metal welding machines mostly adopt fixed pressure arms or simple pneumatic clamping structures. These clamping mechanisms often block the weld seam area, resulting in poor welding accessibility and requiring repeated adjustments to the workpiece position. At the same time, they lack adaptive adjustment capabilities, have poor adaptability to workpieces of different thicknesses or with slight irregularities, and are difficult to coordinate with displacement mechanisms, which limits the welding operation and leads to a decline in welding quality and production efficiency. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this utility model is to propose a workpiece clamping structure for a metal welding machine, which adopts an integrated dual drive and lever force-increasing clamping, rapid lifting and precise clamping adjustment, and an unobstructed working cavity with positioning and pressing parts. While fixing the workpiece, it increases the accessibility of the welding torch, effectively avoids clamping interference, and can work in conjunction with the rotating support table to improve welding quality and efficiency.

[0006] To achieve the above objectives, this utility model proposes a workpiece clamping structure for a metal welding machine, comprising a base plate, a support platform, a positioning and pressing component, and a driving mechanism. The support platform is movably connected to the base plate, and the positioning and pressing component is movably connected to the base plate via the driving mechanism. The driving mechanism includes two symmetrically arranged first driving components, a second driving component, and a connecting component. The second driving component is movably connected to the base plate via the two symmetrically arranged first driving components, and the connecting component is movably connected to the second driving component and connected to the positioning and pressing component.

[0007] In addition, the workpiece clamping structure of the metal welding machine proposed above according to this utility model may also have the following additional technical features: Specifically, the first driving component includes a first driving device, a first limiting rod, and a moving plate, wherein the moving plate is movably connected to the base plate through the first driving device, and the first limiting rod is disposed on the base plate and extends through both ends of the moving plate.

[0008] Specifically, the second drive assembly includes a second drive device, a screw, and two symmetrically arranged second limiting rods, wherein the screw is rotatably connected between the two symmetrically arranged moving plates via the second drive device, and the two symmetrically arranged second limiting rods are disposed between the two symmetrically arranged moving plates.

[0009] Specifically, the connecting assembly includes two first connecting plates and two second connecting plates. The two first connecting plates are movably connected to the screw through the two symmetrically arranged second limiting rods and are threadedly connected to the screw. The two second connecting plates are respectively pivotally connected to the first connecting plates and the positioning pressing member.

[0010] Specifically, the two ends of the positioning and pressing member are bent downwards, and a working cavity is formed between the bends of the positioning and pressing member.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: The workpiece clamping structure of the metal welding machine of this utility model adopts integrated dual drive and lever force amplification clamping. The first drive component drives the positioning pressing part to move up and down rapidly along the Z-axis of the device to achieve a wide range of movement. The second drive component drives the two connecting plates to move in opposite directions. The hinged second connecting plates form a scissor-like lever structure, which converts the horizontal movement into vertical clamping force. This not only transmits the movement but also amplifies the clamping force between the workpiece and the support table. While fixing the workpiece, the shape of the positioning pressing part increases the accessibility of the welding torch, effectively reducing workpiece clamping interference. It also works in coordination with the rotating support table to improve welding quality and efficiency.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of the workpiece clamping structure of the metal welding machine of this utility model; Figure 2 This is a schematic diagram of the internal structure of the workpiece clamping structure of the metal welding machine of this utility model; Figure 3 This is a half-sectional view of the workpiece clamping structure of the metal welding machine of this utility model.

[0014] As shown in the figure: 1. Base plate; 2. Support platform; 3. Positioning and pressing component; 31. Working chamber; 4. Drive mechanism; 41. First drive assembly; 411. First drive device; 412. First limit rod; 413. Moving plate; 42. Second drive assembly; 421. Second drive device; 422. Screw; 423. Second limit rod; 43. Connecting assembly; 431. First connecting plate; 432. Second connecting plate. Detailed Implementation

[0015] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0016] The workpiece clamping structure of the metal welding machine according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0017] like Figures 1-3 As shown, the workpiece clamping structure of the metal welding machine in this embodiment of the present invention may include a base plate 1, a support platform 2, a positioning and pressing component 3, and a driving mechanism 4.

[0018] Among them, the support platform 2 is movably connected to the base plate 1, and the positioning and pressing component 3 is movably connected to the base plate 1 through the drive mechanism 4.

[0019] It should be noted that the base plate 1 described in this embodiment can stably support the support platform 2, the positioning pressing member 3 and the driving mechanism 4. When the support platform 2 carries the workpiece, it can drive the workpiece to rotate and adjust, and the workpiece can be clamped by the downward pressing of the positioning pressing member 3.

[0020] The drive mechanism 4 includes two symmetrically arranged first drive components 41, second drive components 42, and connecting components 43.

[0021] The second drive assembly 42 is movably connected to the base plate 1 via two symmetrically arranged first drive assemblies 41, and the connecting assembly 43 is movably connected to the second drive assembly 42 and connected to the positioning pressing member 3.

[0022] It should be noted that the first driving component 41, the second driving component 42, and the connecting component 43 proposed in the above embodiments realize the two-stage pressing action of the positioning pressing component 3. The first driving component 41 adjusts the height of the positioning pressing component 3 by a large range, while the second driving component 42 and the connecting component 43 are suitable for adjusting the height of the positioning pressing component 3 within a small range, thereby realizing the dual-drive adjustment of the positioning pressing component 3.

[0023] Specifically, during the actual clamping and positioning process, the relevant personnel place the workpiece to be welded on the support platform 2. In the initial state, the first drive device 411 is in the extended state, and the two moving plates 413, the second drive assembly 42, the connecting assembly 43 and the positioning pressing member 3 are located at the highest point of the first limit rod 412.

[0024] During clamping and positioning, the telescopic end of the first driving device 411 retracts. Under the limiting action of the first limiting rod 412, the two moving plates 413 descend and drive the second driving assembly 42 and the positioning pressing member 3 to descend over a large range, approaching the upper part of the workpiece. Then, the second driving device 421 is driven to rotate. The screw 422 adopts a positive and negative thread screw 422. The two symmetrically arranged first connecting plates 431 move and adjust in opposite directions. When they approach each other, the two hinged second connecting plates 432 press down on the positioning pressing member 3, converting the horizontal movement into a vertical clamping force. This not only transmits the motion but also amplifies the clamping force, allowing the positioning connecting member to further contact the workpiece and position the workpiece.

[0025] During welding, the welding torch is used to weld within the working cavity 31 formed in the middle of the positioning and pressing part 3, which effectively avoids clamping interference and weld obstruction, and increases the accessibility of the welding torch.

[0026] When the press is repeated, the drive screw 422 rotates in the opposite direction, the two symmetrically arranged first connecting plates 431 move away from each other, the two second connecting plates 432 are spread apart, driving the positioning pressing part 3 to rise, separate from the workpiece, and after the support table 2 rotates, it is pressed again for positioning welding.

[0027] In one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the first drive assembly 41 includes a first drive device 411, a first limiting rod 412, and a moving plate 413.

[0028] The movable plate 413 is movably connected to the base plate 1 via the first driving device 411, and the first limiting rod 412 is disposed on the base plate 1 and extends through both ends of the movable plate 413.

[0029] It should be noted that the first driving device 411 proposed in the above embodiment adopts a cylinder. The moving plate 413 is pushed up and down by the telescopic end of the cylinder. The first limiting rod 412 is set in an inverted U shape and passes through both sides of the moving plate 413 to limit the moving plate 413 and increase the stability of the moving plate 413, the second driving component 42 and the positioning pressing component 3 in a wide range of movement.

[0030] In one embodiment of this utility model, such as Figure 1 and Figure 3As shown, the second drive assembly 42 includes a second drive device 421, a screw 422, and two symmetrically arranged second limiting rods 423.

[0031] The screw 422 is rotatably connected between two symmetrically arranged movable plates 413 via a second drive device 421, and two symmetrically arranged second limiting rods 423 are disposed between the two symmetrically arranged movable plates 413.

[0032] It should be noted that the second driving device 421 proposed in the above embodiment adopts a rotary motor, and the screw 422 is a screw with positive and negative threads. When rotating, the two first connecting plates 431 move and adjust in opposite directions stably through two symmetrically arranged second limiting rods 423.

[0033] In one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the connecting assembly 43 includes two first connecting plates 431 and two second connecting plates 432.

[0034] The two first connecting plates 431 are movably connected to the screw 422 via two symmetrically arranged second limiting rods 423 and are threadedly connected to the screw 422. The two second connecting plates 432 are respectively pivotally connected to the first connecting plate 431 and the positioning pressing member 3.

[0035] It should be noted that the two symmetrically arranged second limiting rods 423 described in this embodiment are hinged to the upper part of the positioning pressing member 3. When the two first connecting plates 431 move toward each other and approach each other, the horizontal movement is converted into a vertical pressing force, thereby realizing the pressing and positioning of the workpiece by the positioning pressing member 3.

[0036] In one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the two ends of the positioning and pressing member 3 are bent downwards, and a working cavity 31 is formed between the bends of the positioning and pressing member 3.

[0037] It should be noted that the working cavity 31 proposed in the above embodiment constitutes an open space, and the welding torch can be used for welding above the workpiece, effectively reducing clamping interference and weld seam obstruction.

[0038] In summary, the workpiece clamping structure of the metal welding machine of this utility model embodiment adopts integrated dual drive and lever force-increasing clamping, rapid lifting and precise clamping adjustment, and unobstructed working cavity with positioning and pressing parts. While fixing the workpiece, it increases the accessibility of the welding torch, effectively avoids clamping interference, and can work in conjunction with the rotating support table to improve welding quality and efficiency.

[0039] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A workpiece clamping structure for a metal welding machine, characterized in that, Includes a base plate, support platform, positioning and pressing components, and drive mechanism, among which, The support platform is movably connected to the base plate; The positioning and pressing component is movably connected to the base plate via the driving mechanism; The drive mechanism includes two symmetrically arranged first drive components, a second drive component, and a connecting component, wherein... The second drive assembly is movably connected to the base plate via two symmetrically arranged first drive assemblies; The connecting component is movably connected to the second driving component and connected to the positioning pressing component.

2. The workpiece clamping structure of the metal welding machine according to claim 1, characterized in that, The first driving assembly includes a first driving device, a first limiting rod, and a moving plate, wherein, The movable plate is movably connected to the base plate via the first driving device; The first limiting rod is disposed on the base plate and extends through both ends of the movable plate.

3. The workpiece clamping structure of the metal welding machine according to claim 2, characterized in that, The second drive assembly includes a second drive device, a screw, and two symmetrically arranged second limiting rods, wherein, The screw is rotatably connected between two symmetrically arranged moving plates via the second driving device; Two symmetrically arranged second limiting rods are disposed between the two symmetrically arranged movable plates.

4. The workpiece clamping structure of the metal welding machine according to claim 3, characterized in that, The connecting assembly includes two first connecting plates and two second connecting plates, wherein, The two first connecting plates are movably connected to the screw through the two symmetrically arranged second limiting rods, and are threadedly connected to the screw; The two second connecting plates are pivotally connected to the first connecting plate and the positioning pressing member, respectively.

5. The workpiece clamping structure of the metal welding machine according to claim 1, characterized in that, The two ends of the positioning and pressing member are bent downwards, and a working cavity is formed between the bends of the positioning and pressing member.

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