Bed frame metal bracket welding robot device

Abstract

The present application is suitable for the field of bed frame welding equipment, and provides a metal support welding robot device for bed frame, which comprises a welding robot and a guide rail, the welding robot is slidably assembled on the guide rail through a driving base assembly; the driving base assembly comprises a driving base and a limiting seat, the limiting seat is slidably assembled on the guide rail; the driving base comprises a power box, a supporting plate and a connecting plate; the power box transmits power to the guide rail, and is used for driving the welding robot to periodically move back and forth along the guide rail; the connecting plate is rotatably assembled on the supporting plate through a rotating shaft; the rotatable direction of the connecting plate and the supporting plate is perpendicular to the direction in which the welding robot moves along the guide rail; the limiting seat directly transmits the gravity of the welding robot to the guide rail, so that a continuous overturning moment and tearing force of the gravity center of the welding robot on the power transmission connection between the power box and the guide rail is avoided.

Description

Technical Field

[0001] This invention relates to the field of bed frame welding equipment, and more particularly to a robotic device for welding metal supports for bed frames. Background Technology

[0002] As a core furniture component supporting the mattress and bearing the weight of the body, the structural stability and durability of the bed frame are crucial. Currently, most bed frames on the market use metal frame structures, typically assembled from square tubes, round tubes, or angle steel profiles through welding. These metal frames not only need high strength to withstand dynamic loads but also must guarantee long-term fatigue resistance. Therefore, the welding quality of their joints directly determines the overall lifespan and safety performance of the bed frame. With the furniture industry moving towards standardization and large-scale production, higher demands are being placed on the welding efficiency, precision, and consistency of metal frames.

[0003] In the current production process of metal supports for bed frames, welding mainly relies on manual or semi-automatic welding or dedicated robotic workstations. While manual welding offers high flexibility, it suffers from inconsistent weld quality, low production efficiency, and a strong dependence on the welder's skill level, making it difficult to meet the demands of mass production. To address this, some manufacturers have introduced multi-axis industrial welding robots to automate the welding of various connection points on the support frame using pre-programmed paths. These devices typically mount the robot on a ground track or gantry, using servo motors to drive gears and racks, enabling the robot to move along the track and cover the welding positions of various parts of the bed frame.

[0004] However, in practical applications, existing metal support welding robots for bed frames often require a side-mounted installation to extend their working range when welding the sides or bottom of large bed frames. In this side-mounted configuration, most of the robot's weight and reaction force are concentrated on the side furthest from the guide rail, causing a significant shift in its center of gravity. This off-center loading generates continuous overturning moments and tearing forces on the power structures connected to the track drive (such as drive motors, reducers, and rack and pinion pairs). Over long-term operation, this additional dynamic load exacerbates wear on the power transmission components, leading to increased transmission clearance, decreased positioning accuracy, and ultimately affecting the welding robot's trajectory accuracy and welding quality consistency, increasing equipment maintenance frequency and enterprise operating costs. Summary of the Invention

[0005] The purpose of this invention is to provide a welding robot device for metal supports of bed frames, which aims to solve the problem that when existing welding robots for metal supports of bed frames are used on the side, the center of gravity of the welding robot is far from the guide rail, which will exert a tearing force on the power structure connected to the power transmission of the rail. This will cause wear and tear on the power structure, and after a long period of operation, it will affect the welding quality of the welding robot.

[0006] Specifically: A welding robot device for metal supports of bed frames includes a welding robot and a guide rail. The welding robot is slidably mounted on the guide rail via a drive base assembly. During the welding process of the metal supports for bed frames, the welding robot can reciprocate periodically along the guide rail using the drive base assembly. The drive base assembly includes a drive base and a limiting seat. The welding robot is mounted on the limiting seat, which is slidably mounted on the guide rail. The limiting seat is used to directly connect the weight of the welding robot to the guide rail. The drive base includes:

[0007] A power box is used for power transmission and is connected to the guide rail; the power box transmits power to the guide rail to drive the welding robot to move back and forth periodically along the guide rail;

[0008] The support plate is fixed to the top of the power box as a single unit;

[0009] A U-shaped connecting plate is rotatably mounted on the support plate via a rotating shaft; the rotatable direction of the connecting plate and the support plate is perpendicular to the direction that drives the welding robot to move along the guide rail.

[0010] In a preferred embodiment, the drive base further includes:

[0011] A detachable support plate mounted on top of the power box;

[0012] The elastic telescopic rod is installed at the end of the support plate away from the power box;

[0013] A support ball is fitted at the end of the elastic telescopic rod away from the support plate.

[0014] Furthermore, the elastic telescopic rod includes:

[0015] The support tube is fixed to the support plate and is parallel to the support plate.

[0016] An insert post is movably inserted into the support tube; a spring is installed inside the support tube, with one end of the spring connected to the insert post and the other end connected to the inside of the support tube.

[0017] An infrared rangefinder is installed on the outside of the support tube; the infrared rangefinder is used to detect the extent to which the inserting column moves inside the support tube.

[0018] In a preferred embodiment, the limiting seat includes:

[0019] The top plate is mounted on the bottom of the welding robot via a mounting base located on its top.

[0020] Four limiting feet are distributed at the four corners of the top plate; the limiting feet are integrally assembled on the top plate; the limiting feet are used to slide and lock onto the guide rail.

[0021] The four limiting feet are divided into two groups and are symmetrically distributed on both sides of the top plate.

[0022] Furthermore, the limiting foot includes a locking plate and multiple motorized wheel structures mounted on the locking plate. The locking plate is used to slide and lock onto the guide rail. The multiple motorized wheel structures are staggered on the locking plate. The locking plate is slidably mounted on the guide rail through the multiple motorized wheel structures.

[0023] Furthermore, the motorized wheel structure includes:

[0024] Support frame;

[0025] A support wheel is rotatably mounted on the support frame; the support wheel is slidably engaged on the guide rail.

[0026] An adjustment bracket is installed at the end of the support frame furthest from the support wheel.

[0027] The adjustment frame includes:

[0028] Two telescopic adjustment components are mounted on the support frame at one end;

[0029] A hinged structure is located between the two telescopic adjustment members; one end of the hinged structure is connected to the support frame;

[0030] A wedge block is assembled at the end of the telescopic adjustment component away from the support frame; the wedge block tilts and supports the support frame and support wheel onto the guide rail through its wedge-shaped surface, and is used to directly and positively counteract the overturning moment and tearing force caused by the continuous center of gravity force of the welding robot.

[0031] The telescopic adjustment component includes an electric telescopic rod and a hinge installed at one end of the electric telescopic rod. One end of the electric telescopic rod is directly fixed to the wedge block, and the other end is rotatably assembled to the support frame through the hinge. The hinge structure includes a U-shaped positioning plate and a rotating plate. The rotating plate is fixed to the wedge block, and the U-shaped positioning plate is assembled to the support frame. The U-shaped positioning plate and the rotating plate are rotatably assembled through a positioning shaft.

[0032] In summary: After the metal support frame for the bed frame is moved to the bottom of the device, the welding robot reciprocates along the guide rail via the drive base assembly to precisely position itself to each welding point area. The core improvement of this device lies in the separation design of power transmission and gravity bearing: the power box is connected to the guide rail for power transmission to drive the robot's movement, but the power box is rotatably mounted on the drive base via a support plate and a connecting plate, and the rotation direction of the connecting plate and the support plate is perpendicular to the robot's movement direction. This layout effectively "removes" the off-center gravity force (parallel to the rotation direction) generated when the welding robot is side-mounted, so that it no longer acts on the transmission connection between the power box and the guide rail, but is instead distributed to the limit seat through the rotation structure, and the limit seat directly transmits the gravity to the guide rail. This completely avoids the damage to the power transmission components caused by continuous overturning torque and tearing force, prevents the transmission clearance from increasing, and thus ensures the consistency of the welding robot's positioning accuracy, running trajectory accuracy, and welding quality, significantly reducing the frequency of equipment maintenance and the enterprise's operating costs.

[0033] To further enhance reliability, the device integrates multiple protection and adaptive mechanisms. The limit seat transmits gravity to the guide rail through the limit clamping plates and multiple motorized wheel structures. These motorized wheel structures are staggered on the clamping plates, forming a prominent main sliding support area and a stored backup sliding support area. When the motorized wheel in the main support area is damaged due to long-term pressure, the backup motorized wheel can immediately take over the support task, ensuring that the welding robot can continue to complete the current emergency task without interrupting production. At the same time, it works in conjunction with the infrared rangefinder on the trigger elastic telescopic rod to issue a maintenance warning, achieving an organic combination of "working despite defects" and intelligent monitoring. In addition, there is a support ball and insert column structure between the drive base and the limit seat. In the event of extreme overturning causing relative rotation, the support ball will be squeezed, causing the insert column to move within the support tube, which will also trigger the infrared rangefinder alarm, promptly indicating the overturning fault and preventing the accident from escalating.

[0034] The device dynamically adjusts the tilt angle of the support wheel through an adjustment frame: by extending the electric telescopic rod of one telescopic adjustment component and shortening the other side, the contact angle of the support wheel on the wedge block is changed, thereby flexibly adapting to the overturning moment of different magnitudes and directions generated by different welding procedures, so that the gravity transmission path is always in the optimal state; this active adjustment capability not only further reduces the unexpected load on the transmission system, but also enables the robot to cope with the off-center load changes under complex working conditions.

[0035] Compared with the prior art, the metal bracket welding robot device for bed frames of the present invention can achieve the following:

[0036] 1. During the process of the metal support for the bed frame being transported to the bottom of the device and welded by the welding robot, the power box, connected to the guide rail, transmits power to the guide rail, driving the welding robot to move along the guide rail. This allows the welding robot to accurately position itself to the welding point area of ​​the metal support for the bed frame. As the welding robot moves back and forth along the guide rail via the drive base assembly, the power box rotates through the support plate and connecting plate. Furthermore, the rotational direction of the connecting plate and support plate is perpendicular to the direction in which the welding robot moves along the guide rail. The center of gravity force of the welding robot (parallel to the rotatable direction of the connecting plate and support plate) can be removed and distributed to the limiting seat. This allows the limiting seat to directly transmit the weight of the welding robot to the guide rail, avoiding a continuous overturning moment and tearing force on the structure at the power transmission connection between the power box and the guide rail caused by the center of gravity force of the welding robot, thus preventing an increase in transmission clearance. The positioning accuracy of the welding robot in the welding point area of ​​the metal bracket of the bed frame is improved, as is the accuracy of the welding robot's running trajectory and the consistency of welding quality, reducing the maintenance frequency of the equipment and the operating costs of the enterprise.

[0037] 2. Under continuous overturning torque and tearing force, after a malfunction occurs, the drive base and limit seat will rotate relative to each other and squeeze onto the support ball, causing the inserting column to move and insert into the support tube; and triggering the infrared rangefinder to alert that an overturning malfunction has occurred.

[0038] 3. Since the limit seat directly transmits the gravity of the welding robot to the guide rail through the limit plate and multiple motorized wheel structures, the multiple motorized wheel structures need to withstand continuous overturning torque and tearing force. The multiple motorized wheel structures are staggered on the plate, dividing the area into multiple protruding main sliding support areas and multiple retracted backup sliding support areas. After several of the protruding motorized wheel structures used for main sliding support are damaged by pressure, the multiple motorized wheel structures of the backup sliding support can continue to provide stable sliding support to continue to handle unfinished tasks, realizing continued use after damage. At the same time, it can also be used in conjunction with the infrared rangefinder on the trigger elastic telescopic rod for maintenance after handling emergency tasks.

[0039] 4. By extending the electric telescopic rod on one side of the telescopic adjustment component and shortening the electric telescopic rod on the other side of the telescopic adjustment component, the tilt angle of the support wheel and the support wheel on the wedge block can be adjusted by the adjustment frame, so that the welding robot can flexibly cope with the different overturning moments and tearing forces caused by the continuous bearing of different gravity in different welding processes.

[0040] 5. The combination of gravity transfer and redundant support ensures that the equipment can maintain basic operation even if some components are damaged, avoiding production losses caused by sudden shutdowns. The linkage warning of the infrared rangefinder provides real-time data for intelligent maintenance, enabling parallel production and maintenance. Secondly, the adaptive adjustment mechanism composed of multiple motorized wheels staggered on the plate complements the gravity dispersion design formed by the adjustment frame adjusting the support wheels and the tilt angle of the support wheels on the wedge block. This not only optimizes static stress but also dynamically adapts to changing loads, greatly extending the overall lifespan of the machine. These technical features together construct a highly reliable, highly adaptable welding robot system with self-diagnostic capabilities. Its overall performance far exceeds the simple superposition of single improvements, providing unprecedented stability and continuity for the automated welding of bed frame metal supports. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the welding robot device for the metal support of the bed frame according to the present invention;

[0042] Figure 2 for Figure 1 Schematic diagram of the middle drive base assembly;

[0043] Figure 3 for Figure 2 Schematic diagram of the structure of the drive base;

[0044] Figure 4 for Figure 2 Schematic diagram of the middle limit seat;

[0045] Figure 5 for Figure 4 Schematic diagram of the middle limit stop pin;

[0046] Figure 6 for Figure 5 Top view of the middle limit stop pin;

[0047] Figure 7 for Figure 5 A schematic diagram of one embodiment of the motorized wheel structure;

[0048] Figure 8 for Figure 5 A schematic diagram of another embodiment of the motorized wheel structure;

[0049] Figure 9 for Figure 8 A schematic diagram of the assembly structure of the central motor wheel structure and support frame;

[0050] Figure 10 for Figure 8 A schematic diagram of the middle support frame.

[0051] In the diagram: 100, welding robot; 200, mounting base; 300, drive base assembly; 310, drive base; 311, power box; 312, support plate; 313, connecting plate; 314, support ball; 315, elastic telescopic rod; 316, pallet; 320, limit seat; 330, top plate; 340, limit clamp; 341, clamp plate; 342, motorized wheel structure; 343, support frame; 344, support wheel; 345, adjusting frame; 3451, wedge block; 3452, telescopic adjusting component; 3453, hinge structure; 400, guide rail; 410, limit guide rail; 420, drive guide rail. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0053] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0054] In the embodiments of this invention, please refer to Figures 1-3 A welding robot device for metal supports for bed frames includes a welding robot 100 and a guide rail 400. The welding robot 100 is slidably mounted on the guide rail 400 via a drive base assembly 300. The welding robot 100 can reciprocate periodically along the guide rail 400 using the drive base assembly 300 during the welding process of metal supports for bed frames.

[0055] The reason why the “welding robot 100” is not described in detail is that it belongs to existing technology and can be purchased directly on the market or assembled by purchasing parts, etc. Whether it is disclosed or not does not affect the drive base assembly 300 that is to be protected, so it will not be elaborated here.

[0056] The drive base assembly 300 includes a drive base 310 and a limiting seat 320. The welding robot 100 is mounted on the limiting seat 320, and the limiting seat 320 is slidably mounted on the guide rail 400. The limiting seat 320 is used to directly connect the gravity of the welding robot 100 to the guide rail 400.

[0057] The drive base 310 includes:

[0058] The power box 311 is used for power transmission and is connected to the guide rail 400; the power box 311 transmits power to the guide rail 400 to drive the welding robot 100 to move back and forth periodically along the guide rail 400.

[0059] The power box 311 is existing technology and can be purchased directly from the market, assembled from parts, or researched in journals. Those skilled in the art can choose to purchase it according to their needs. The power box 311 is not the subject of this application and will not be described in detail here. Of course, as is well known to those skilled in the art, the power box 311 of this invention provides power so that it transmits power to the guide rail 400 to drive the welding robot 1000 to move back and forth periodically along the guide rail 400 for normal operation. As is well known to those skilled in the art, the power device 1 is commonplace and belongs to conventional means or common knowledge. It will not be described in detail here. Those skilled in the art can choose to arbitrarily configure it according to their needs or convenience.

[0060] The support plate 312 is integrally fixed to the top of the power box 311;

[0061] A U-shaped connecting plate 313 is rotatably mounted on the support plate 312 via a rotating shaft; the rotatable direction of the connecting plate 313 and the support plate 312 is perpendicular to the direction that drives the welding robot 100 to move along the guide rail 400.

[0062] In summary, it can be concluded that during the process of the metal support for the bed frame being moved to the bottom of the device and welded by the welding robot 100, the power box 311 is connected to the guide rail 400, allowing the power box 311 to transmit power to the guide rail 400, thus driving the welding robot 100 to move along the guide rail 400. This enables the welding robot 100 to accurately position itself at the welding point area of ​​the metal support for the bed frame. During the cyclical reciprocating motion of the welding robot 100 along the guide rail 400 via the drive base assembly 300, the power box 311 is rotated via the support plate 312 and the connecting plate 313. Furthermore, the rotatable direction of the connecting plate 313 and the support plate 312 is related to the direction of rotation of the welding robot 100. The direction of movement of the welding robot 100 along the guide rail 400 is perpendicular, which can remove the center of gravity force of the welding robot 100 (parallel to the rotatable direction of the connecting plate 313 and the support plate 312) and distribute it to the limiting seat 320. This allows the limiting seat 320 to directly transmit the gravity of the welding robot 100 to the guide rail 400, avoiding a continuous overturning moment and tearing force on the structure at the power transmission connection between the power box 311 and the guide rail 400 caused by the center of gravity force of the welding robot 100, thus preventing an increase in transmission clearance. The positioning accuracy of the welding robot 100 in the welding point area of ​​the metal support for the bed frame is improved, the running trajectory accuracy of the welding robot 100 and the consistency of welding quality are improved, and the maintenance frequency of the equipment and the operating cost of the enterprise are reduced.

[0063] In the embodiments of this invention, please refer to Figure 2 and Figure 3 The drive base 310 also includes:

[0064] A detachable tray 316 mounted on top of the power box 311;

[0065] The elastic telescopic rod 316 is assembled at the end of the support plate 316 away from the power box 311;

[0066] The support ball 314 is assembled at the end of the elastic telescopic rod 316 away from the support plate 316.

[0067] For further details, please see Figure 3 The elastic telescopic rod 316 includes:

[0068] The support tube is fixed on the support plate 316 and is parallel to the support plate 312;

[0069] An insert post is movably inserted into the support tube; a spring is installed inside the support tube, with one end of the spring connected to the insert post and the other end connected to the inside of the support tube.

[0070] An infrared rangefinder is installed on the outside of the support tube; the infrared rangefinder is used to detect the extent to which the inserting column moves inside the support tube.

[0071] In summary, it can be concluded that under continuous overturning torque and tearing force, when a fault occurs, the drive base 310 and the limit seat 320 rotate relative to each other and will press against the support ball 314, causing the inserting column to move and insert into the support tube; and triggering the infrared rangefinder to alert that an overturning fault has occurred.

[0072] In the embodiments of this invention, please refer to Figure 1 , Figures 4-7 The limiting seat 320 includes:

[0073] The top plate 330 is mounted on the bottom of the welding robot 100 via a mounting base 200 provided on its top.

[0074] Four limiting feet 340 are distributed at the four corners of the top plate 330; the limiting feet 340 are integrally assembled on the top plate 330; the limiting feet 340 are used to slide and lock on the guide rail 400.

[0075] The four limiting feet 340 are divided into two groups and are symmetrically distributed on both sides of the top plate 330.

[0076] For further details, please see Figures 4-7The limiting foot 340 includes a clamping plate 341 and a plurality of motorized wheel structures 342 mounted on the clamping plate 341. The clamping plate 341 is used to slide and clamp onto the guide rail 400. The plurality of motorized wheel structures 342 are staggered on the clamping plate 341. The clamping plate 341 is slidably mounted on the guide rail 400 through the plurality of motorized wheel structures 342.

[0077] In summary, it can be concluded that: since the limit seat 320 directly transmits the gravity of the welding robot 100 to the guide rail 400 through the limit plate 341 of the limit foot 340 and multiple motorized wheel structures 342, the multiple motorized wheel structures 342 need to withstand continuous overturning torque and tearing force; the multiple motorized wheel structures 342 are staggered on the plate 341, dividing into multiple protruding areas for main sliding support and multiple rear-mounted spare sliding support areas. After several of the protruding motorized wheel structures 342 for main sliding support are damaged by pressure, the multiple motorized wheel structures 342 in the rear-mounted spare sliding support can continue to provide stable sliding support for continuing to handle unfinished tasks, realizing continued use after damage. At the same time, it can also cooperate with the infrared rangefinder on the trigger elastic telescopic rod 316 for maintenance after handling emergency tasks.

[0078] In the embodiments of this invention, please refer to Figure 5 and Figure 7 The motorized wheel structure 342 includes a support frame 343 and a support wheel 344. The support wheel 344 is rotatably mounted on the support frame 343, and the support frame 343 is integrally mounted on the clamping plate 341. The support wheel 344 is slidably clamped on the guide rail 400.

[0079] Please see Figure 1 The guide rail 400 includes a limiting guide rail 410 and a driving guide rail 420. There are two limiting guide rails 410, which are respectively distributed on both sides of the driving guide rail 420. The limiting guide rail 410 is used for the sliding assembly of the clamping plate 341 through multiple motorized wheel structures 342. The driving guide rail 420 is connected to the power box 311 for power transmission. The power box 311 transmits power to the driving guide rail 420 to drive the welding robot 100 to move back and forth periodically along the guide rail 400.

[0080] The reason why "drive rail 420" is not described in detail is that it is an existing technology that can be purchased directly on the market or assembled by purchasing parts. Whether it is publicly available or not does not affect the drive base assembly 300 that is to be protected, so it will not be elaborated on here.

[0081] In the embodiments of this invention, please refer to Figures 8-10 The motorized wheel structure 342 includes:

[0082] Support frame 343;

[0083] A support wheel 344 is rotatably mounted on the support frame 343; the support wheel 344 is slidably engaged on the guide rail 400.

[0084] Adjustment bracket 345 is added to the end of support bracket 343 away from support wheel 344.

[0085] Please see Figures 8-10 The adjustment frame 345 includes:

[0086] Two telescopic adjustment components 3452 are mounted on the support frame 343 at one end;

[0087] The hinge structure 3453 is located between the two telescopic adjustment members 3452; one end of the hinge structure 3453 is connected to the support frame 343;

[0088] A wedge block 3451 is assembled at the end of the telescopic adjustment member 3452 away from the support frame 343; the wedge block 3451 supports the support frame 343 and the support wheel 344 on the guide rail 400 by its wedge-shaped surface, and is used to directly and positively cope with the overturning torque and tearing force caused by the continuous center of gravity of the welding robot 100.

[0089] Please see Figure 10 The telescopic adjustment component 3452 includes an electric telescopic rod and a hinge installed at one end of the electric telescopic rod. One end of the electric telescopic rod is directly fixed to the wedge block 3451, and the other end is rotatably assembled to the support frame 343 through the hinge. The hinge structure 3453 includes a U-shaped positioning plate and a rotating plate. The rotating plate is fixed to the wedge block 3451, and the U-shaped positioning plate is assembled to the support frame 343. The U-shaped positioning plate and the rotating plate are rotatably assembled through a positioning shaft.

[0090] Therefore, by extending the electric telescopic rod on one side of the telescopic adjustment member 3452 and shortening the electric telescopic rod on the other side of the telescopic adjustment member 3452, the tilt angle of the support wheel 344 and the support wheel 344 on the wedge block 3451 can be adjusted by the adjustment frame 345, so that the welding robot 100 can flexibly cope with the different overturning moments and tearing forces caused by the continuous bearing of different gravity in different welding processes.

[0091] In summary: After the metal support frame for the bed frame is moved to the bottom of the device, the welding robot 100 reciprocates along the guide rail 400 via the drive base assembly 300 to precisely position itself to each welding point area. The core improvement of this device lies in the separation design of power transmission and gravity bearing: the power box 311 is connected to the guide rail 400 for power transmission to drive the robot's movement, but the power box 311 is rotatably mounted on the drive base 310 via the support plate 312 and the connecting plate 313, and the rotation direction of the connecting plate 313 and the support plate 312 is perpendicular to the robot's movement direction. This layout makes the welding machine... When the robot 100 is mounted on its side, the off-center load force (parallel to the rotation direction) is effectively "removed" and no longer acts on the transmission connection between the power box 311 and the guide rail 400. Instead, it is distributed and transmitted to the limit seat 320 through the rotation structure, and the limit seat 320 directly transmits the gravity to the guide rail 400. This completely avoids the damage to the power transmission components caused by the continuous overturning moment and tearing force, prevents the transmission gap from increasing, and thus ensures the consistency of the positioning accuracy, running trajectory accuracy and welding quality of the welding robot 100, significantly reducing the equipment maintenance frequency and enterprise operating costs.

[0092] To further enhance reliability, the device integrates multiple protection and adaptive mechanisms. The limit seat 320 transmits gravity to the guide rail 400 via the clamping plate 341 of the limit foot 340 and multiple motorized wheel structures 342. These motorized wheel structures 342 are staggered on the clamping plate 341, forming a prominent main sliding support area and a stored spare sliding support area. When the motorized wheel in the main support area is damaged due to prolonged pressure, the spare motorized wheel can immediately take over the support task, ensuring that the welding robot 100 can continue to complete the current emergency task without interrupting production. Simultaneously, it triggers an infrared rangefinder on the elastic telescopic rod 316 to issue a maintenance warning, achieving an organic combination of "working despite defects" and intelligent monitoring. Furthermore, a support ball 314 and an insert column structure are provided between the drive base 310 and the limit seat 320. In the event of extreme overturning causing relative rotation, the support ball 314 will be squeezed, causing the insert column to move within the support tube, similarly triggering an infrared rangefinder alarm to promptly indicate an overturning fault and prevent the accident from escalating.

[0093] The device dynamically adjusts the tilt angle of the support wheel 344 through the adjustment frame 345: by extending the electric telescopic rod of the telescopic adjustment member 3452 on one side and shortening it on the other side, the contact angle of the support wheel 344 on the wedge block 3451 is changed, thereby flexibly adapting to the overturning moment of different magnitude and direction generated by different welding procedures, so that the gravity transmission path is always in the optimal state; this active adjustment capability not only further reduces the unexpected load on the transmission system, but also enables the robot to cope with the off-center load changes under complex working conditions.

[0094] The combination of gravity transfer and redundant support allows the equipment to maintain basic operation even when some components are damaged, avoiding production losses caused by sudden shutdowns. The linkage warning of the infrared rangefinder provides real-time data for intelligent maintenance, enabling parallel production and maintenance. Secondly, the adaptive adjustment mechanism formed by multiple motorized wheel structures 342 staggered on the clamping plate 341, combined with the adjustment frame 345 adjusting the support wheel 344 and the tilt angle of the support wheel 344 on the wedge block 3451, forms a gravity dispersion design that not only optimizes static stress but also dynamically adapts to changing loads, greatly extending the overall lifespan of the machine. These technical features together construct a highly reliable, highly adaptable welding robot system with self-diagnostic capabilities. Its overall performance far exceeds the simple superposition of single improvements, providing unprecedented stability and continuity for the automated welding of bed frame metal supports.

[0095] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. It should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" 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; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0096] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A welding robot device for metal supports for bed frames, comprising a welding robot (100) and a guide rail (400), wherein the welding robot (100) is slidably mounted on the guide rail (400) via a drive base assembly (300), and the welding robot (100) can periodically move back and forth along the guide rail (400) using the drive base assembly (300) during the welding of metal supports for bed frames; characterized in that, The drive base assembly (300) includes a drive base (310) and a limiting seat (320). The welding robot (100) is mounted on the limiting seat (320), and the limiting seat (320) is slidably mounted on the guide rail (400). The limiting seat (320) is used to directly connect the gravity of the welding robot (100) to the guide rail (400). The drive base (310) includes: A power box (311) is used for power transmission and is connected to the guide rail (400); the power box (311) transmits power to the guide rail (400) to drive the welding robot (100) to move back and forth periodically along the guide rail (400); The support plate (312) is integrally fixed to the top of the power box (311); A U-shaped connecting plate (313) is rotatably mounted on the support plate (312) via a rotating shaft; the rotatable direction of the connecting plate (313) and the support plate (312) is perpendicular to the direction that drives the welding robot (100) to move along the guide rail (400); this layout removes the off-center load force generated when the welding robot (100) is side-mounted, which is parallel to the rotation direction and no longer acts on the transmission connection between the power box (311) and the guide rail (400), but is distributed to the limiting seat (320) through the rotating structure, and the limiting seat (320) directly transmits the gravity to the guide rail (400); The limiting seat (320) includes: The top plate (330) is mounted on the bottom of the welding robot (100) via a mounting base (200) provided on its top; Four limiting feet (340) are distributed at the four corners of the top plate (330); the limiting feet (340) are integrally assembled on the top plate (330); the limiting feet (340) are used to slide and lock on the guide rail (400); the four limiting feet (340) are divided into two groups and are symmetrically distributed on both sides of the top plate (330); The limiting foot (340) includes a clamping plate (341) and multiple motorized wheel structures (342) mounted on the clamping plate (341). The clamping plate (341) is used to slide and clamp onto the guide rail (400). The multiple motorized wheel structures (342) are staggered on the clamping plate (341). The clamping plate (341) is slidably mounted on the guide rail (400) through the multiple motorized wheel structures (342). The motorized wheel structure (342) includes: Support frame (343); A support wheel (344) is rotatably mounted on the support frame (343); the support wheel (344) is used to slide and lock onto the guide rail (400); An adjustment bracket (345) is installed on the end of the support bracket (343) away from the support wheel (344); The adjusting bracket (345) includes: Two telescopic adjustment components (3452) are mounted on the support frame (343) at one end; A hinge structure (3453) is located between the two telescopic adjustment members (3452); one end of the hinge structure (3453) is connected to the support frame (343); A wedge block (3451) is fitted at the end of the telescopic adjustment member (3452) away from the support frame (343); the wedge block (3451) tilts the support frame (343) and the support wheel (344) onto the guide rail (400) through its wedge-shaped surface, and is used to directly and positively cope with the overturning torque and tearing force caused by the continuous center of gravity force of the welding robot (100); The telescopic adjustment component (3452) includes an electric telescopic rod and a hinge installed at one end of the electric telescopic rod. One end of the electric telescopic rod is directly fixed to the wedge block (3451), and the other end is rotatably assembled to the support frame (343) through the hinge. The hinge structure (3453) includes a U-shaped positioning plate and a rotating plate. The rotating plate is fixed to the wedge block (3451), and the U-shaped positioning plate is assembled to the support frame (343). The U-shaped positioning plate and the rotating plate are rotatably assembled through a positioning shaft.

2. The welding robot device for metal supports of bed frames according to claim 1, characterized in that, The drive base (310) also includes: A detachable tray (316) mounted on top of the power box (311). The elastic telescopic rod (315) is mounted at the end of the support plate (316) away from the power box (311); A support ball (314) is fitted at the end of the elastic telescopic rod (315) away from the support plate (316).

3. The welding robot device for metal supports for bed frames according to claim 2, characterized in that, The elastic telescopic rod (315) includes: The support tube is fixed on the support plate (316) and parallel to the support plate (312); An insert post is movably inserted into the support tube; a spring is installed inside the support tube, with one end of the spring connected to the insert post and the other end connected to the inside of the support tube. An infrared rangefinder is installed on the outside of the support tube; the infrared rangefinder is used to detect the extent to which the inserting column moves inside the support tube.

4. The welding robot device for metal supports for bed frames according to claim 1, characterized in that, The support frame (343) is integrally assembled on the card plate (341).

5. The welding robot device for metal supports for bed frames according to claim 4, characterized in that, The guide rail (400) includes a limiting guide rail (410) and a driving guide rail (420). There are two limiting guide rails (410), which are respectively distributed on both sides of the driving guide rail (420). The limiting guide rail (410) is used for the sliding assembly of the clamping plate (341) through multiple motorized wheel structures (342). The driving guide rail (420) is connected to the power box (311) for power transmission. The power box (311) transmits power to the driving guide rail (420) to drive the welding robot (100) to move back and forth periodically along the guide rail (400).

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