Automatic assembly welding equipment for office table frame

Abstract

This invention discloses an automatic assembly and welding equipment for office desk frames, belonging to the field of desk frame processing tooling technology. It includes structural steel, a support plate mechanism, and steel pipes, as well as a support assembly, an inner clamping assembly, and an edge clamping assembly. The support plate mechanism is mounted on the structural steel, and the support assembly, inner clamping assembly, and edge clamping assembly are mounted on the support plate mechanism. The steel pipes are mounted on the support assembly, with the inner clamping assembly located inside the steel pipes and the edge clamping assembly located outside the steel pipes. The support plate mechanism includes a first support plate and a second support plate. The first support plate has a second sliding groove, within which a sliding rod is installed. The other end of the sliding rod is fixedly connected to the second support plate, and a movable limiting component is provided at the entrance of the second sliding groove. This invention, by setting the support assembly, inner clamping assembly, and edge clamping assembly structure on the support plate mechanism, enables all-round fitting, positioning, and clamping of the desk frame steel pipes from the inner, outer, and upper sides, changing the traditional tooling's simple single-point, single-sided clamping fixing method.

Description

Technical Field

[0001] This invention relates to the field of table frame welding technology, specifically to an automatic assembly and welding equipment for office desk frames. Background Technology

[0002] As the core load-bearing component of office furniture, the desk frame is mostly made of steel pipe profiles welded together. The welding precision and forming stability of the overall structure directly determine the load-bearing capacity and service life of the desk. Currently, in the process of processing desk frames, most domestic furniture manufacturers use manual-assisted positioning and separate welding methods for the welding of steel pipe desk frames. The supporting tooling equipment is relatively simple in structure, which can only achieve basic material support and fixation functions. The adaptability and automation level are generally low, making it difficult to meet the needs of large-scale and standardized production and processing.

[0003] Existing welding fixtures and equipment suffer from numerous structural defects in practical use. Firstly, their adaptability is poor. Most conventional table frame welding fixtures on the market are fixed structures, and the spacing of the supporting positioning structures cannot be flexibly adjusted. They can only perform positioning welding on table frames of a single specification. The furniture market offers a wide variety of table sizes and models, with significant differences in the dimensions and spacing of the table frame steel pipes. Fixed fixtures cannot meet the production needs of multiple product categories, requiring companies to equip themselves with multiple sets of welding fixtures of different specifications. This not only significantly increases equipment procurement and storage costs but also makes the fixture replacement and debugging process cumbersome, severely reducing overall production efficiency.

[0004] Secondly, the positioning and clamping structure of traditional welding fixtures is relatively simple, mostly only achieving basic external clamping and fixation of the table frame steel pipes, lacking a comprehensive, coordinated positioning structure for both the inner and outer sides. The table frame steel pipes are curved tubular structures, and manual fixation with simple fixtures easily leads to pipe misalignment, displacement, and loosening. Uneven stress on the material during welding can easily cause quality problems such as deformation, weld misalignment, and uneven joint gaps in the welded table frame. Subsequent secondary correction and repair welding of defective products are required, significantly increasing the product defect rate and labor costs, and hindering the quality stability of mass production.

[0005] Meanwhile, the stability of the positioning and adjustment structures of existing tooling equipment is insufficient. Some adjustable tooling relies solely on simple bolt locking to fix its position. Under the vibration environment of long-term welding operations, the locking structure is prone to loosening and slippage, leading to deviations in the adjusted positioning distance and affecting the dimensional accuracy of the welded table frame. Conventional adjustment structures have poor limiting and fixing effects, and cannot achieve precise locking after adjustment. The positioning position needs to be recalibrated every time different specifications of table frames are processed, which is time-consuming and highly dependent on the operator's experience, hindering the promotion of standardized production operations on the assembly line.

[0006] In addition, traditional welding operations often involve manual, single-point clamping, making it difficult to standardize clamping force and position. Inconsistent operating methods among different operators lead to poor welding consistency in mass-produced desk frames. This manual material-fixing method is not only labor-intensive and costly, but also poses safety hazards due to operators' close contact with the welding flame and high-temperature workpieces. Currently, there is a lack of automated welding equipment capable of multi-specification adaptive adjustment, precise internal and external clamping, and strong locking stability. This fails to meet the demands of high-efficiency, high-precision, and standardized mass production of office desk frames. Therefore, there is an urgent need to develop a new type of automated assembly welding equipment for office desk frames to address the numerous technical shortcomings of existing technologies.

[0007] Therefore, we propose an automatic assembly and welding equipment for office desk frames. Summary of the Invention

[0008] One of the technical problems this application aims to solve is that the welding of steel pipes for office desk frames currently relies on simple fixed tooling with manual positioning and clamping. This results in poor specification adaptability, incomplete positioning and clamping, insufficient adjustment and locking stability, poor consistency in batch welding, low production efficiency, high production costs, and safety hazards in the operation, making it difficult to meet the needs of standardized, high-precision, and large-scale office desk frame welding production.

[0009] To address the aforementioned technical problems, this application provides an automatic assembly and welding equipment for office desk frames, including structural steel, a support plate mechanism, and steel pipes, as well as a support assembly, an inner clamping assembly, and an edge clamping assembly; The support plate mechanism is set on the steel profile, the support assembly, the inner clamping assembly, and the edge clamping assembly are set on the support plate mechanism, the steel pipe is set on the support assembly, the inner clamping assembly is set on the inner side of the steel pipe, and the edge clamping assembly is set on the outer side of the steel pipe; The support plate mechanism includes a support plate one and a support plate two. The support plate one is provided with a slide groove two, and a slide rod is provided in the slide groove two. The other end of the slide rod is fixedly connected to the support plate two, and a movable limiting component is provided at the entrance of the slide groove two.

[0010] In some embodiments, a groove is provided on the contact surface between the steel profile and the support plate, and a slider is provided on the bottom surface of the groove, which passes through the groove and can move along the groove. The second slide is located above the first slide, and a limit cap is provided at the end of the slide rod located at the second slide.

[0011] In some embodiments, a fixed limiting member is provided at the inlet position of the chute, the fixed limiting member is provided with a plurality of magnetic protrusions, the end of the movable limiting member is provided with a magnetic groove, the magnetic protrusions are provided with arc-shaped protrusions, and the inner wall of the corresponding magnetic groove is provided with an arc-shaped groove.

[0012] In some embodiments, the magnetic protrusion matches the size of the magnetic groove, the arc-shaped protrusion matches the size of the arc-shaped groove, and the limiting cap at the end of the slide rod matches the size of the fixing limiting member.

[0013] In some embodiments, the support assembly includes a support seat disposed on a support plate mechanism, a placement slot disposed on the support seat, a connecting seat disposed on the support seat, a handle and a connecting rod disposed on the connecting seat, a pressure head disposed at the front of the connecting rod, and a connecting member disposed inside the handle.

[0014] In some embodiments, handle one is hinged to the connecting seat, and connecting rod one is hinged to the connecting seat via pivot one. When the pressure head presses the steel pipe, handle one is perpendicular to connecting rod one. A connecting member is provided inside handle one. One end of the connecting member is hinged to handle one via pivot two, and the other end of the connecting member is hinged to connecting rod one.

[0015] In some embodiments, the internal clamping assembly includes a base 1 disposed on a support plate mechanism, a mounting seat disposed on the base 1, a handle 2 disposed through the mounting seat, a connecting block 2 connected to the handle 2 via a connecting rod 2, a connecting plate disposed at the front of the connecting block 2, and an arc-shaped rod disposed at the front of the connecting plate.

[0016] In some embodiments, by pulling the second handle back and forth within the mounting base, the arc-shaped rod abuts against and moves away from the inside of the steel pipe.

[0017] In some embodiments, the second handle is slidably engaged with the mounting base, the second connecting rod is fixedly installed at the end of the second handle, the second connecting block is fixedly connected to the second connecting rod, the second connecting plate and the second connecting block are integral structures, and the arc-shaped rod is adapted to the inner curvature of the steel pipe. In some embodiments, the edge clamping assembly includes a base two disposed on a support plate mechanism, a mounting sleeve disposed on the base two, a handle three disposed through the mounting sleeve, a connecting block two connected to the mounting sleeve, an end block disposed in front of the connecting block two and connected to the handle three, a clamping block disposed in front of the end block, and a pressure plate disposed at the end of the clamping block.

[0018] In some embodiments, the edge clamping assembly includes a base two disposed on a support plate mechanism, a mounting sleeve disposed on the base two, a handle three disposed through the mounting sleeve, a connecting block two connected to the mounting sleeve, an end block disposed in front of the connecting block two and connected to the handle three, a clamping block disposed in front of the end block, and a pressure plate disposed at the end of the clamping block.

[0019] This invention has at least the following beneficial effects: This equipment integrates three collaborative working structures on the support plate mechanism: a support component, an internal clamping component, and an edge clamping component. This enables omnidirectional, close-fitting positioning and clamping of the steel pipes in the table frame, addressing the limitations of traditional single-point, single-sided clamping methods. The support component, through the coordinated action of handle one, connecting rod one, and pressure head, stably clamps the upper part of the steel pipe, restricting its vertical displacement. The internal clamping component, relying on the sliding handle two, drives the end arc-shaped rod to fit against the inner wall of the steel pipe, achieving internal support and limitation. The edge clamping component provides a close, wrapping clamping grip from the outside and top of the steel pipe. This multi-directional structure effectively prevents steel pipe displacement, misalignment, and loosening during welding, avoiding quality problems such as deformation, uneven welds, and joint gap deviations after table frame welding. This significantly improves the welding accuracy and product qualification rate of the table frame.

[0020] The equipment's spacing adjustment structure is equipped with a dedicated limit locking structure. Fixed and movable limit components at the two inlets of the chute work together. After the support plate spacing is adjusted, initial positioning is achieved through the magnetic attraction between the magnetic protrusion and the magnetic groove. Simultaneously, the interlocking structure of the arc-shaped protrusion and the arc-shaped groove significantly improves the anti-slip performance of the limit structure. This structure effectively counteracts the displacement caused by equipment vibration during welding operations, preventing the adjusted support plate position from shifting. This ensures a consistent positioning benchmark for each welding operation, eliminating the need for repeated calibration by operators, reducing equipment debugging difficulty, decreasing reliance on operator experience, and facilitating the stable implementation of standardized operations on the workshop assembly line.

[0021] The entire equipment adopts a mechanical linkage clamping structure to replace the traditional manual material fixing operation mode. Each clamping component can complete the clamping and loosening operation of steel pipes through simple pushing, pulling, and rotating actions. The operation process is simple and convenient, effectively reducing the intensity of manual operation and the labor cost of manual positioning. The mechanized and uniform clamping method can ensure that the clamping force and positioning position of each batch of products are consistent, completely improving the problem of poor product welding consistency caused by differences in manual operation, and significantly improving the mass production quality stability of table frame products. At the same time, it reduces the working environment where operators are in close contact with the high temperature and open flame of welding, effectively avoiding the safety risks in manual welding operations and improving the safety factor of production operations. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view at point B in the middle; Figure 4 for Figure 1 Enlarged view at point C; Figure 5 This is a schematic diagram of the steel profile and support plate mechanism of the present invention; Figure 6 for Figure 5 Enlarged view of point D; Figure 7 This is a top view of the steel profile and support plate mechanism of the present invention; Figure 8 for Figure 7 EE cross-section; Figure 9 for Figure 8 Enlarged view at point F; Figure 10 for Figure 8 Enlarged view of point G in the middle.

[0023] In the diagram: 100 - Steel section; 200 - Support plate mechanism; 201 - Support plate one; 202 - Support plate two; 203 - Movable limiting component; 204 - Slide rod; 205 - Slider; 206 - Slide groove one; 207 - Slide groove two; 208 - Fixed limiting component; 209 - Magnetic protrusion; 210 - Magnetic groove; 211 - Arc-shaped protrusion; 212 - Arc-shaped groove; 300 - Support assembly; 301 - Support base; 302 - Connecting base; 303 - Handle one; 304 - Connecting rod one; 305 - Pressure head; 306-Placement slot; 307-Shaft 1; 308-Shaft 2; 309-Connector; 400-Inner clamping assembly; 401-Base 1; 402-Mounting base; 403-Handle 2; 404-Connecting block 2; 405-Connecting plate; 406-Arc rod; 407-Connecting rod 2; 500-Edge clamping assembly; 501-Base 2; 502-Connecting block 2; 503-End block; 504-Clamping block; 505-Pressure plate; 506-Mounting sleeve; 507-Handle 3; 600-Steel pipe. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figure 1-10 The present invention provides a technical solution: an automatic assembly and welding equipment for office desk frames, including a steel profile 100, a support plate mechanism 200, a steel pipe 600, and also including a support component 300, an inner clamping component 400, and an edge clamping component 500; The support plate mechanism 200 is mounted on the steel section 100. The support assembly 300, the inner clamping assembly 400, and the edge clamping assembly 500 are mounted on the support plate mechanism 200. The steel pipe 600 is mounted on the support assembly 300. The inner clamping assembly 400 is mounted on the inner side of the steel pipe 600, and the edge clamping assembly 500 is mounted on the outer side of the steel pipe 600. The support plate mechanism 200 includes a first support plate 201 and a second support plate 202. The first support plate 201 is provided with a second slide groove 207. A slide rod 204 is provided in the second slide groove 207. The other end of the slide rod 204 is fixedly connected to the second support plate 202. A movable limiting member 203 is provided at the entrance of the second slide groove 207.

[0026] A groove 206 is provided on the contact surface between the steel section 100 and the support plate 201. A slider 205 is provided on the bottom surface of the groove 206, which passes through the groove 206. The slider 205 can move along the groove 206. Slide 207 is located above slide 1 206, and slide rod 204 is provided with a limit cap at the end of slide 207.

[0027] A fixed limiting member 208 is provided at the inlet position of the slide 207. Several magnetic protrusions 209 are provided on the fixed limiting member 208. A magnetic groove 210 is provided at the end of the movable limiting member 203. An arc-shaped protrusion 211 is provided on the magnetic protrusion 209. An arc-shaped groove 212 is provided on the inner wall of the magnetic groove 210.

[0028] The magnetic protrusion 209 matches the size of the magnetic groove 210, the arc protrusion 211 matches the size of the arc groove 212, and the limiting cap at the end of the slide rod 204 matches the size of the fixing limiting member 208.

[0029] Specifically, this equipment, by assembling a support plate mechanism 200 on the upper part of the steel profile 100, relies on the rigid structure of the steel profile 100 itself to provide a stable load-bearing foundation for the welding operation of the entire machine. It can effectively bear the working load of the upper components and the table frame steel pipe 600, avoiding the overall shaking and deformation problems of the equipment during long-term operation, and providing a stable working base for the table frame welding operation. The support plate mechanism 200, as the core load-bearing and adjustment base, is used to integrate and install the support component 300, the inner clamping component 400, and the edge clamping component 500, so that various positioning and clamping structures can be centrally arranged in the same working plane, ensuring the alignment accuracy of each clamping structure with the steel pipe 600, and achieving all-round positioning constraints on the inner, outer, and upper parts of the steel pipe 600, meeting the precise fixing requirements during the table frame welding process.

[0030] The support plate mechanism 200 adopts a split-fit structure of support plate one 201 and support plate two 202. Its main purpose is to achieve adjustable support spacing, overcoming the limitations of traditional fixed welding fixtures where dimensions cannot be adjusted. The sliding groove two 207 inside support plate one 201 provides a regular sliding guide path for the sliding rod 204. One end of the sliding rod 204 is slidably fitted inside the sliding groove two 207, while the other end remains fixedly connected to support plate two 202. This allows support plate two 202 to adjust its position by following the extension and retraction of the sliding rod 204, thereby changing the support spacing between support plate one 201 and support plate two 202. This adapts to the welding needs of office desk frame steel pipes 600 of different lengths and specifications, effectively improving the equipment's versatility.

[0031] A slide groove 206 is provided at the contact position between the steel section 100 and the support plate 201. A slider 205, which penetrates the slide groove 206, enables fine-tuning of the overall position of the support plate 201 laterally. The slider 205 can slide smoothly within the slide groove 206, causing the support plate 201 to shift. Combined with the telescopic adjustment of the slide rod 204 within the slide groove 207, a dual adjustment structure is formed, further enhancing the flexibility and range of equipment spacing adjustment, and adapting to the positioning needs of more diverse table frame specifications. The slide groove 207 is positioned above the slide groove 206, allowing the lateral adjustment structure and the telescopic adjustment structure to be arranged in layers, avoiding structural interference between the two types of adjustment structures during operation, ensuring smooth and stable adjustment movements, and improving the stability of structural operation.

[0032] A limiting cap is provided at the end of the slide bar 204 located in the slide groove 207, and the structural dimensions of the limiting cap are matched with the fixed limiting component 208. This structure can effectively limit the sliding stroke of the slide bar 204, preventing the slide bar 204 from completely dislodging from the interior of the slide groove 207 during the sliding adjustment process, avoiding structural disengagement and failure, ensuring the integrity and linkage stability of the overall structure of the support plate mechanism 200, and ensuring that each spacing adjustment operation can be completed within a controllable stroke range, reducing the probability of equipment failure and ensuring the orderly progress of continuous production operations.

[0033] A fixed limiting component 208 is installed at the inlet of the second slide groove 207. This, along with a removable movable limiting component 203 at the inlet of the second slide groove 207, allows for locking and positioning of the structure after the support plate spacing is adjusted. Magnetic protrusions 209 on the surface of the fixed limiting component 208 correspond to and engage with the magnetic grooves 210 at the ends of the movable limiting component 203. Magnetic attraction helps to secure the movable limiting component 203, initially locking the sliding position of the slide rod 204 within the second slide groove 207. This prevents slight slippage of the slide rod 204 caused by welding vibrations, ensuring the initial stability of the adjusted spacing dimensions.

[0034] The arc-shaped protrusion 211 on the surface of the magnetic protrusion 209 can mechanically engage with the arc-shaped groove 212 on the inner wall of the magnetic groove 210, adding a physical limiting structure on top of the magnetic adhesion. The precise matching of the arc structure can significantly improve the anti-slip and anti-displacement ability of the limiting structure, offset the displacement caused by continuous vibration during welding, and prevent the problem of loosening and displacement of the limiting structure after long-term operation. The structural design with matching dimensions can ensure that the engaging structure fits tightly and the fit gap is small, effectively ensuring the accuracy and long-term consistency of the adjustment distance between support plate 1 201 and support plate 202, keeping the welding positioning benchmark of each batch of table frame steel pipe 600 uniform, and steadily improving the welding forming accuracy and product qualification rate of the table frame.

[0035] The entire structure combines sliding adjustment with magnetic mechanical locking for dual limiting, which not only retains the adjustable performance of the equipment to adapt to multiple specifications, but also solves the problems of poor locking stability, easy loosening and poor positioning accuracy of traditional adjustable tooling. The structure is compact and reasonable, and the adjustment operation is simple and convenient. Precise positioning and locking can be completed without complicated calibration procedures, which effectively reduces the difficulty of manual operation and improves the overall production accuracy and work efficiency of office desk frame welding.

[0036] Example 2: Combination Figures 1 to 10 The support assembly 300 includes a support base 301 mounted on the support plate mechanism 200, a placement groove 306 mounted on the support base 301, a connecting base 302 mounted on the support base 301, a handle 303 and a connecting rod 304 mounted on the connecting base 302, a pressure head 305 mounted at the front of the connecting rod 304, and a connecting member 309 mounted inside the handle 303. The handle 303 is hinged to the connecting base 302, and the connecting rod 304 is hinged to the connecting base 302 via a pivot 307. When the pressure head 305 presses against the steel pipe 600, the handle 303 is perpendicular to the connecting rod 304. The connecting member 309 is mounted inside the handle 303. One end of the connecting member 309 is hinged to the handle 303 via a pivot 308, and the other end of the connecting member 309 is hinged to the connecting rod 304.

[0037] Specifically, the support component 300 is mounted on the support plate mechanism 200. Relying on the stable support performance of the support plate mechanism 200, it provides a fixed installation benchmark for the welding and positioning of the entire steel pipe 600. The support base 301, as the basic load-bearing structure of the support component 300, directly bears the installation load of the other functional components, ensuring the stability and uniformity of the overall component installation position and preventing positional shifts during long-term operation. This provides a stable structural foundation for the precise positioning and clamping of the steel pipe 600. The placement groove 306 on the surface of the support base 301 can initially receive and limit the steel pipe 600, allowing for pre-positioning of the steel pipe 600 before clamping, restricting its horizontal sliding, reducing the workload of manual alignment adjustments, and providing a regular placement posture for subsequent clamping and fixing operations.

[0038] The connecting seat 302 is fixedly mounted on the upper part of the support seat 301, serving as the mounting carrier for the rotating hinge structure. It provides reliable mounting points for the movable hinges of the handle 303 and the connecting rod 304, ensuring the structural stability of each rotating component during operation. The handle 303 is hinged to the connecting seat 302, and the connecting rod 304 forms a hinged engagement with the connecting seat 302 through the rotating shaft 307. This allows both the handle 303 and the connecting rod 304 to rotate around the connecting seat 302. The opening and closing action of the clamping structure is achieved through a purely mechanical hinge rotation, eliminating the cumbersome operation of traditional bolt locking and manual pushing, simplifying the clamping and disassembly process of the steel pipe 600, and effectively improving the efficiency of workpiece loading and unloading.

[0039] The pressure head 305 assembled at the front end of the connecting rod 304 is a pressing structure that directly contacts the workpiece. It can follow the rotation trajectory of the connecting rod 304 to achieve lifting, pressing and releasing actions. It limits and fixes the steel pipe 600 placed inside the placement groove 306 by vertical pressing, restricting the vertical jump and displacement of the steel pipe 600, avoiding the workpiece from floating or shifting during welding vibration, and ensuring the stability of the steel pipe 600's posture during welding.

[0040] The connecting piece 309 inside the handle 303 is hinged to the handle 303 via the pivot 308. The other end of the connecting piece 309 is hinged to the connecting rod 304, thus forming a linkage traction structure between the handle 303 and the connecting rod 304. This linkage structure can stably transmit the rotational torque of the handle 303 to the connecting rod 304, allowing the movement trajectories of the two rotating parts to match and move synchronously, avoiding the occurrence of single component rotation jamming or uneven force, and improving the smoothness and synchronicity of the overall clamping action.

[0041] With the pressure head 305 clamping the steel pipe 600, the handle 303 and connecting rod 304 are perpendicular. This structural angle arrangement allows the connector 309, handle 303, and connecting rod 304 to form a stable triangular force-bearing structure. This triangular force-bearing configuration evenly distributes the vibration load generated during welding and the reverse force from the workpiece to each hinge point, reducing the load-bearing pressure on a single rotating shaft structure, decreasing component wear and deformation probability, and extending the overall service life of the equipment. Simultaneously, the vertically locked structure possesses excellent self-locking performance, effectively suppressing reverse rebound and loosening of the clamping structure without the need for additional locking accessories. This ensures the continuous clamping force of the pressure head 305 on the steel pipe 600, preventing the workpiece from loosening or shifting during welding.

[0042] The entire support assembly 300 achieves automated opening and closing clamping operations through a multi-hinged linkage structure. The overall structure boasts high integration and strong motion linkage, enabling it to work in conjunction with other clamping components to achieve omnidirectional positioning and fixation of the steel pipe 600. The structure operates solely through mechanical linkage, requiring no additional electrical or pneumatic auxiliary structures. This results in a low failure rate, convenient daily maintenance, and continuous assurance of positioning accuracy during the welding process of the steel pipe 600. It effectively improves quality issues such as deformation and weld misalignment after the table frame is welded, enhancing the consistency and production stability of the finished office desk frame welding process.

[0043] Example 3: Combination Figures 1 to 10 The internal clamping assembly 400 includes a base 401 mounted on the support plate mechanism 200, a mounting seat 402 mounted on the base 401, a handle 403 passing through the mounting seat 402, a connecting block 404 connected to the handle 403 via a connecting rod 407, a connecting plate 405 located at the front of the connecting block 404, and an arc-shaped rod 406 located at the front of the connecting plate 405. The handle 403 is slidably engaged with the mounting seat 402. The connecting rod 407 is fixedly mounted on the end of the handle 403. The connecting block 404 is fixedly connected to the connecting rod 407. The connecting plate 405 and the connecting block 404 are integrally formed. The arc-shaped rod 406 is adapted to the curvature of the inner side of the steel pipe 600. By pulling the handle 403 back and forth within the mounting seat 402, the arc-shaped rod 406 abuts against and moves away from the inner side of the steel pipe 600.

[0044] Specifically, the inner clamping assembly 400 is fixedly mounted on the surface of the support plate mechanism 200 via the base 401. Relying on the stable support performance of the support plate mechanism 200, a fixed installation reference is obtained, ensuring that the entire clamping assembly will not shift during operation, providing stable structural support for the inner positioning of the steel pipe 600. The base 401, as the load-bearing base of the entire assembly, integrates and fixes all upper functional structures, ensuring the regularity and stability of the assembly positions of each component, avoiding assembly deviations that are prone to occur in split-type installation structures, and ensuring that the positioning reference for the inner clamping operation remains consistent at all times.

[0045] The mounting base 402, fixedly installed on the upper part of the base 401, provides a regular sliding mounting position for the handle 403. The handle 403 is fitted through the mounting base 402 and forms a sliding fit structure, allowing the handle 403 to move smoothly back and forth along the axial direction of the mounting base 402. This sliding fit structure can limit the radial wobble of the handle 403, ensuring that the movement trajectory of the handle 403 is straight and stable during push-pull operations, avoiding deviation and jamming, and providing a reliable motion basis for subsequent precise inner clamping.

[0046] A connecting rod 407 is fixedly mounted at the end of handle 403. The outer side of connecting rod 407 is fixedly connected to connecting block 404, which can stably transmit the linear displacement of handle 403 to the front structure, realizing smooth power transmission. Connecting block 404 and connecting plate 405 adopt an integral molding structure, which has higher overall structural strength. During operation, there will be no problems such as loose connection or structural misalignment. It can effectively offset the structural load caused by welding vibration, ensure the stability of the front clamping structure position, and reduce positioning errors caused by transmission backlash.

[0047] The arc-shaped rod 406 assembled at the front end of the connecting plate 405 is arranged in a structure that adapts to the inner curvature of the steel pipe 600. Unlike the conventional straight clamping structure, the arc-shaped structure can form a large-area contact with the inner wall of the steel pipe 600. This contact method can disperse the local pressure generated by single-point clamping, avoid the squeezing deformation and dent damage to the inner wall of the steel pipe 600, completely protect the structural integrity of the workpiece, and at the same time increase the contact area, effectively improving the limiting effect of inner positioning.

[0048] This assembly adopts a rear-mounted push-pull drive and a front-end arc-shaped fitting structure, primarily used for auxiliary positioning and clamping of the inner side of the steel pipe 600. Conventional table frame welding fixtures typically only have external clamping and upper limiting structures. Since the steel pipe 600 is a hollow tubular structure, single-point clamping on the outside can easily lead to problems such as pipe wall concavity, uneven force distribution, and lateral displacement. The lack of internal support and limiting can cause slight deformation of the steel pipe 600 during welding, affecting the overall dimensional accuracy of the table frame. This component provides abutment support from the inside of the steel pipe 600, forming a coordinated internal and external limiting system with the clamping structures on the outside and top of the equipment, comprehensively constraining the deformation space of the steel pipe 600.

[0049] In actual operation, the operator only needs to pull the handle 403 to drive the front arc rod 406 to complete the contact and separation resetting action with the inside of the steel pipe 600. The overall operation is simple and labor-saving, without complicated adjustment and locking steps, which can effectively shorten the auxiliary time for workpiece clamping and disassembly and improve the overall welding processing efficiency. The sliding adjustment structure can adapt to steel pipes 600 with different diameters within a certain range. Combined with the adjustable support plate mechanism 200 of the equipment, it further improves the adaptability of the whole machine to workpieces with different specifications of table frames.

[0050] The entire internal clamping assembly 400 features a compact structure, highly reliable fixed connections between components, and minimal transmission clearance, maintaining stable positioning accuracy even during long-term reciprocating operation. Through its internal support and limiting structure, it effectively overcomes the shortcomings of traditional table frame welding fixtures, such as lack of internal support, susceptibility to deformation, and incomplete positioning. This ensures that the steel pipe 600 maintains a regular round shape and standard installation position throughout the welding process, significantly reducing the probability of welding deformation, weld misalignment, and forming deviations, thereby effectively improving the welding quality and mass production consistency of office desk frames.

[0051] Example 4: Combination Figures 1 to 10 The edge clamping assembly 500 includes a base 2 501 disposed on the support plate mechanism 200, a mounting sleeve 506 disposed on the base 2 501, a handle 3 507 disposed through the mounting sleeve 506, a connecting block 2 502 connected to the mounting sleeve 506, an end block 503 disposed in front of the connecting block 2 502 and connected to the handle 3 507, a clamping block 504 disposed in front of the end block 503, and a pressure plate 505 disposed at the end of the clamping block 504.

[0052] Specifically, the edge clamping assembly 500 is fixedly arranged on the surface of the support plate mechanism 200 based on the base 2 501, forming a stable clamping working position on the outside of the whole machine. The base 2 501 is the load-bearing base of the entire assembly, which can integrate and fix all functional components on the upper part, ensuring that the assembly position of each working component remains constant, avoiding loosening or displacement of components during long-term operation of the equipment, providing a stable and reliable installation foundation for the positioning and clamping operation of the outer edge of the steel pipe 600, and ensuring that the positioning reference is consistent for each clamping operation.

[0053] A mounting sleeve 506 is fixedly installed on the upper part of the base 2 501. A handle 3 507 is mounted through the mounting sleeve 506. The mounting sleeve 506 constrains and guides the movement trajectory of the handle 3 507, enabling it to slide smoothly back and forth along the axial direction of the mounting sleeve 506. This sleeve-type sliding fit structure effectively reduces the wobbling amplitude of the handle 3 507 during reciprocating motion, minimizes positioning deviations caused by structural clearances, and makes manual push-pull adjustment smoother and more stable, preventing jamming or misalignment, thus improving the overall stability of the adjustment operation.

[0054] The mounting sleeve 506 is fixedly connected to the connecting block 502 on the outside, which can provide auxiliary fixed support for the front clamping structure, further improving the overall rigidity of the front working structure and avoiding structural deformation due to long-term clamping stress. The end block 503 arranged at the front of the connecting block 502 is connected to the end of the handle 507, which can stably transmit the linear displacement of the handle 507 to the front clamping block 504 and pressure plate 505, realizing continuous power transmission. This ensures that the pushing and pulling action can directly control the front clamping structure to complete the fitting and separating action. The transmission path is simple and direct, and the power loss is small.

[0055] The end block 503 is equipped with a clamping block 504 at its front, and a pressure plate 505 is set at the end of the clamping block 504. The multi-level segmented structural arrangement can achieve a close-fitting and limiting effect on the outer edge of the steel pipe 600, which is different from the traditional single-point abutment structure that can only achieve single-point force application. This structural arrangement can form a close-fitting constraint from the outer and upper edges of the steel pipe 600, which can effectively limit the displacement trend of the steel pipe 600 in multiple directions such as deviation and upward tilting, and make up for the structural gap of the inner clamping component 400 and the support component 300 in the peripheral edge limiting, forming a complete multi-directional limiting system with the inner and upper clamping structures.

[0056] The structure adopts a rear-mounted sliding adjustment and front-end multi-stage clamping design, primarily used for auxiliary clamping and positioning of the outer edge of the steel pipe 600. During the welding process, the table frame steel pipe 600 is prone to lateral stress. A single inner support and upper clamping cannot completely counteract the outward deformation trend, easily causing quality problems such as dimensional deviations at the table frame edge and uneven welds. The edge clamping assembly 500, through external solid clamping constraint, effectively counteracts the lateral displacement caused by welding thermal deformation, stabilizes the forming dimensions of the steel pipe 600 edge, and improves the welding regularity of the overall table frame structure.

[0057] The sliding fit structure between handle 507 and mounting sleeve 506 can accommodate the external clamping requirements of steel pipes 600 with different diameters. The contact distance of the front pressure plate 505 can be flexibly adjusted according to the actual workpiece size. Combined with the spacing adjustment function of the support plate mechanism 200, this further enhances the machine's adaptability to different specifications of table frame products and reduces the limitations of tooling equipment. The overall adjustment can be completed by manual pushing and pulling, making the operation process simple and convenient. No additional auxiliary locking accessories are required, which can effectively shorten the operation time of workpiece clamping and disassembly and improve the operation efficiency of batch welding production.

[0058] The entire edge clamping assembly 500 features a high degree of structural integration, with each connection point fitting securely and the overall structure exhibiting strong rigidity. It can withstand continuous vibration and workpiece reaction forces during welding operations, and is unlikely to loosen or shift under long-term operation. By stably clamping the outer edge of the steel pipe 600, it perfects the equipment's all-around positioning and clamping function, effectively addressing the shortcomings of traditional welding fixtures such as incomplete positioning, insufficient edge limiting, and easy workpiece deformation. This continuously improves the dimensional accuracy and mass production consistency of welded office desk frames.

[0059] The following is through Figure 1-10The working process of this equipment is as follows: Turning handle 303 clockwise 90 degrees causes shaft 308, located within handle 303, to rotate 90 degrees clockwise. This causes connecting rod 304 to rotate clockwise with shaft 308 and along shaft 307, causing pressure head 305 to disengage from steel pipe 600. At this point, support assembly 300 no longer clamps steel pipe 600. Conversely, turning handle 403 clockwise clamps steel pipe 600, which will not be described in detail here. Pulling handle 403 back and forth within mounting base 402 causes arc rod 406 to abut against or move away from the inside of steel pipe 600. Pulling handle 507 back and forth within mounting sleeve 506 causes end block 503, clamping block 504, and pressure plate 505 connected to handle 507 to either press against or move away from steel pipe 600 from the outside or top. Steel pipe 600; By moving the slider 205 of support plate 1 201 back and forth in slide groove 1 206, the slide rod 204 moves back and forth in slide groove 207, adjusting the distance between support plate 1 201 and support plate 202 to accommodate welding table frames of different sizes. A movable limiting member 203 is set at the entrance of slide groove 207. Pulling out the movable limiting member 203 can adjust the distance between support plate 1 201 and support plate 202. Inserting the movable limiting member 203 causes the magnetic protrusion 209 to insert into the magnetic groove 210. At the same time, the magnets at the contact surfaces of the magnetic protrusion 209 and the magnetic groove 210 have opposite magnetism. The arc-shaped protrusion 211 is inserted into the arc-shaped groove 212 to increase the anti-slip ability of the limiting member, so that the distance between support plate 1 201 and support plate 202 no longer changes after adjustment.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] Although embodiments of the 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 invention.

Claims

1. An automatic assembly and welding equipment for office desk frames, comprising structural steel (100), a support plate mechanism (200), and steel pipes (600), characterized in that: Includes a support assembly (300), an inner clamping assembly (400), and an edge clamping assembly (500); The support plate mechanism (200) is disposed on the section steel (100), the support assembly (300), the inner clamping assembly (400), and the edge clamping assembly (500) are disposed on the support plate mechanism (200), the steel pipe (600) is disposed on the support assembly (300), the inner clamping assembly (400) is disposed inside the steel pipe (600), and the edge clamping assembly (500) is disposed outside the steel pipe (600); The support plate mechanism (200) includes a support plate one (201) and a support plate two (202). The support plate one (201) is provided with a slide groove two (207). A slide rod (204) is provided in the slide groove two (207). The other end of the slide rod (204) is fixedly connected to the support plate two (202). A movable limiting member (203) is provided at the entrance of the slide groove two (207).

2. The automatic assembly and welding equipment for office desk frames according to claim 1, characterized in that: The contact surface between the steel section (100) and the support plate (201) is provided with a sliding groove (206), and a slider (205) passing through the sliding groove (206) is provided on the bottom surface of the sliding groove (206). The slider (205) can move along the sliding groove (206). The second slide (207) is located above the first slide (206), and the slide rod (204) is provided with a limit cap at the end of the second slide (207).

3. The automatic assembly and welding equipment for office desk frames according to claim 1, characterized in that: A fixed limiting member (208) is provided at the entrance position of the second slide (207). The fixed limiting member (208) is provided with a plurality of magnetic protrusions (209). The end of the movable limiting member (203) is provided with a magnetic groove (210). The magnetic protrusions (209) are provided with arc-shaped protrusions (211), and the inner wall of the magnetic groove (210) is provided with an arc-shaped groove (212).

4. The automatic assembly and welding equipment for office desk frames according to claim 3, characterized in that: The magnetic protrusion (209) is sized to match the magnetic groove (210), the arc protrusion (211) is sized to match the arc groove (212), and the limiting cap at the end of the slide rod (204) is sized to match the fixing limiting member (208).

5. The automatic assembly and welding equipment for office desk frames according to claim 4, characterized in that: The support assembly (300) includes a support base (301) disposed on the support plate mechanism (200), a placement groove (306) disposed on the support base (301), a connecting base (302) disposed on the support base (301), a handle (303) and a connecting rod (304) disposed on the connecting base (302), a pressure head (305) disposed at the front of the connecting rod (304), and a connector (309) disposed inside the handle (303).

6. The automatic assembly and welding equipment for office desk frames according to claim 5, characterized in that: The handle (303) is hinged to the connecting seat (302), and the connecting rod (304) is hinged to the connecting seat (302) through the pivot (307). When the pressure head (305) presses the steel pipe (600), the handle (303) is perpendicular to the connecting rod (304). The handle (303) is provided with a connector (309) inside. One end of the connector (309) is hinged to the handle (303) through the pivot (308), and the other end of the connector (309) is hinged to the connecting rod (304).

7. The automatic assembly and welding equipment for office desk frames according to claim 1, characterized in that: The inner clamping assembly (400) includes a base (401) disposed on the support plate mechanism (200), a mounting seat (402) disposed on the base (401), a handle (403) disposed through the mounting seat (402), a connecting block (404) connected to the handle (403) via a connecting rod (407), a connecting plate (405) disposed in front of the connecting block (404), and an arc-shaped rod (406) disposed in front of the connecting plate (405).

8. The automatic assembly and welding equipment for office desk frames according to claim 7, characterized in that: The second handle (403) is slidably engaged with the mounting base (402), the second connecting rod (407) is fixedly installed at the end of the second handle (403), the second connecting block (404) is fixedly connected to the second connecting rod (407), the connecting plate (405) and the second connecting block (404) are an integral structure, and the arc rod (406) is adapted to the inner arc setting of the steel pipe (600).

9. An automatic assembly and welding equipment for office desk frames according to claim 8, characterized in that: By pulling the second handle (403) back and forth within the mounting base (402), the arc-shaped rod (406) abuts against and moves away from the inside of the steel pipe (600).

10. The automatic assembly and welding equipment for office desk frames according to claim 1, characterized in that: The edge clamping assembly (500) includes a base two (501) disposed on the support plate mechanism (200), a mounting sleeve (506) disposed on the base two (501), a handle three (507) disposed through the mounting sleeve (506), a connecting block two (502) connected to the mounting sleeve (506), an end block (503) disposed in front of the connecting block two (502) and connected to the handle three (507), a clamping block (504) disposed in front of the end block (503), and a pressure plate (505) disposed at the end of the clamping block (504).

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