Welding device for electric fireplaces

Abstract

This invention relates to the field of welding processing technology, specifically to a welding device for processing electric stoves. The device includes a welding table and a welding mechanism mounted on the welding table. A through groove is formed on the welding table, and the electric stove base is placed above the through groove. The lug to be welded is placed inside the electric stove base. A strip-shaped support is fixed to one side of the through groove. Guide grooves extending laterally are formed on the upper and lower sides of the strip-shaped support. A movable support assembly is slidably connected to the guide grooves. An upper support mechanism is connected to the upper end of the movable support assembly, and a lower support mechanism is connected to the lower end of the movable support assembly. The upper and lower support mechanisms abut against the root area of ​​the lug from the upper and lower sides, respectively. This invention effectively suppresses thermal deformation during lug welding and adapts to various workpiece specifications by simultaneously adjusting the upper and lower support mechanisms laterally and rigidly clamping them, combined with an adjustable pressure block structure, significantly improving welding accuracy, versatility, and stability.

Description

Technical Field

[0001] This invention relates to the field of welding processing technology, and specifically to a welding device for processing electric stoves. Background Technology

[0002] In the manufacturing process of electric stoves, the base is usually assembled from multiple stamped thin plates. Among them, the support lugs are key connecting structures and need to be firmly welded to the inside of the base.

[0003] A search of Chinese Patent Publication No. CN120962074A reveals a welding device for processing electric stove burner heads that facilitates positioning and clamping. The device includes a welding table, a clamping unit, a moving part, a lifting part, and a welding unit. The clamping unit is fixedly connected to the top of the welding table, and the moving part is also fixedly connected to the top of the welding table. The lifting part is slidably connected to the outer wall of the moving part, and the welding unit is fixedly connected to the bottom of the lifting part. This invention uses a motor-driven adjustment component to precisely adjust the clamping component, ensuring it fits tightly against the outer wall of the lower plate for stable clamping. The upper plate is clamped by an extrusion component and then moved downwards by the lifting part, achieving precise fitting at the welding point of the upper and lower plates. Simultaneously, the pressure exerted by the upper plate on the adjustment component triggers the rotation of the fixing component, providing real-time correction and positioning of the upper and lower plates. This ensures vertical alignment and tight fitting at the welding point, solving the problem of welding misalignment caused by the smooth welding surfaces of the upper and lower plates in leveling devices.

[0004] Existing welding processes for electric stove supports often rely on manual pressing or simple clamps for temporary positioning, lacking rigid support for the thin plate supports during the welding process. This leads to uncontrollable micro-deformation when the supports soften due to heat, and warping or displacement after welding due to the release of thermal stress. At the same time, the clamping position, force, and operating rhythm are highly dependent on the worker's experience, making it difficult to ensure product consistency. This results in large fluctuations in yield and high rework rates, making it difficult to meet the requirements of modern home appliance manufacturing for high precision, high stability, and repeatable automated production. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention solves the problems of uncontrollable thermal deformation, post-weld warping and poor product consistency caused by the lack of rigid support and reliance on manual operation in the welding of electric stove support ears.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a welding device for processing electric stoves, including a welding table and a welding mechanism disposed on the welding table. A through groove is provided on the welding table, and an electric stove base is placed above the through groove. The support lug to be welded is placed inside the electric stove base. A strip-shaped support is fixedly provided on one side of the through groove. Guide grooves extending laterally are respectively provided on the upper and lower sides of the strip-shaped support. A movable support assembly is slidably connected in the guide grooves. An upper support mechanism is connected to the upper end of the movable support assembly, and a lower support mechanism is connected to the lower end of the movable support assembly. The upper support mechanism and the lower support mechanism abut against the root area of ​​the support lug from the upper and lower sides, respectively, to provide rigid clamping for the support lug, which is easily softened by heat and undergoes slight deformation during the welding process. The movable support assembly is also provided with a synchronous drive mechanism, which is configured to drive the upper support mechanism and the lower support mechanism to synchronously adjust laterally to the welding position of the corresponding support lug, thereby effectively suppressing displacement and collapse caused by heat input while adapting to different support lug layouts.

[0007] Furthermore, the movable support assembly includes a support rod that vertically penetrates the upper and lower guide grooves. An installation platform is fixedly installed at the upper and lower ends of the support rod. An adjusting screw is rotatably installed in the strip bracket along the horizontal direction. One end of the adjusting screw is connected to the output shaft of the motor, and the other end penetrates the middle of the support rod and is threaded into the support rod to drive the support rod to move laterally along the guide groove.

[0008] Furthermore, the synchronous drive mechanism includes a first rack and a second rack, which are slidably disposed in movable slots opened in the upper and lower mounting platforms, respectively. The first rack meshes with a first gear rotatably mounted on the upper mounting platform, and the second rack meshes with a second gear rotatably mounted on the lower mounting platform. The first gear and the second gear are coaxially connected by a rotating rod, which passes through a fixed seat between the upper and lower mounting platforms and is rotatably connected to the fixed seat. The rotating shaft of the second gear is drively connected to the output shaft of the motor. The outer end of the first rack is fixedly connected to the upper support mechanism, and the outer end of the second rack is fixedly connected to the lower support mechanism, so as to realize the synchronous lateral movement of the upper support mechanism and the lower support mechanism.

[0009] Furthermore, the upper support mechanism includes a cylinder, the tail of which is fixed to the platform at the end of the first rack, the piston rod end of which is fixedly connected to one end of a connecting rod, and a support column is provided below the other end of the connecting rod, with an annular support head fixedly provided at the lower end of the support column.

[0010] Furthermore, the support head has at least three circumferential grooves, and a pressure block is slidably arranged in each groove. The bottom surface of the pressure block is flush with the bottom surface of the support head. Limiting strips are provided on both sides of the pressure block to slide and cooperate with the limiting grooves provided on the side wall of the groove. The pressure block is locked and fixed by fastening bolts to accommodate support ears of different sizes.

[0011] Furthermore, a suction head is fixedly connected to the lower end of the connecting rod. The suction head has a hollow structure, and its lower side is fixedly connected to the upper end of the support column. Several suction hoods are distributed around its outer periphery to capture fumes at close range during welding.

[0012] Furthermore, a vacuum generator is installed on the aforementioned mounting platform. The negative pressure suction port of the vacuum generator is connected to the air outlet of the suction head through a high-temperature resistant pipe. The exhaust port of the vacuum generator is connected to an external filter bag through a hose. A solenoid valve is installed on the compressed air inlet pipe of the vacuum generator. The solenoid valve is controlled by a controller to start and stop the suction action.

[0013] Furthermore, a third rack is slidably disposed on the upper mounting platform. The third rack meshes with the other side of the first gear. A sliding sleeve is connected to the outer end of the third rack. An abutment rod is slidably disposed inside the sliding sleeve. The front end of the abutment rod abuts against a pressure sensor embedded on the mounting platform. An elastic element is provided inside the sliding sleeve to maintain the pressure of the abutment rod on the pressure sensor when the third rack slides with the first gear. The abutment rod disengages from the pressure sensor only when the first rack returns to its initial position and the third rack simultaneously retracts to the starting point.

[0014] Furthermore, a guide ring is fixedly installed on the mounting platform in front of the pressure sensor, and the abutment rod passes through the guide ring and slides with it to limit the movement trajectory of the abutment rod and ensure that it presses the pressure sensor stably.

[0015] Furthermore, the controller is configured to immediately open the solenoid valve to start the vacuum generator to extract the dust when it receives a trigger signal from the pressure sensor, and close the solenoid valve when the pressure sensor signal disappears, so as to ensure that the residual dust after welding is fully extracted.

[0016] Beneficial effects 1. The technical solution provided by the present invention integrates the upper support mechanism and the lower support mechanism into the same movable bracket assembly, and drives them to adjust their positions synchronously in the lateral direction by a synchronous drive mechanism. This enables precise alignment of the support ears with different layouts inside the electric stove base. During the welding process, the upper and lower support mechanisms apply rigid clamping from the root area of ​​the support ears, effectively suppressing the micro-deformation, displacement or collapse caused by the softening of the thin plate support ears due to heat, significantly improving welding accuracy and product consistency. At the same time, the support head adopts an adjustable pressure block structure, which can quickly adapt to various sizes of support ears through the cooperation of sliding grooves and fastening bolts, taking into account both versatility and clamping stability.

[0017] 2. The technical solution provided by this invention cleverly combines the dust extraction function with the clamping position adjustment mechanism. When the upper and lower support mechanisms are adjusted, the third rack moves synchronously with the gear transmission. The pressure sensor is continuously pressed by the contact rod, and the controller starts the vacuum generator to extract the dust. Only when the upper and lower support mechanisms are fully reset does the contact rod disengage from the sensor, and the extraction is turned off. This design ensures that the extraction action always strictly corresponds to the clamping position, achieving precise control of extraction when in position and stopping when reset. While ensuring a clean working environment, it avoids ineffective gas consumption and improves energy utilization efficiency and the reliability of automated operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the contact lugs of the upper and lower support mechanisms of the present invention. Figure 3 This is a schematic diagram of the strip support structure of the present invention; Figure 4 This is a schematic diagram of the vacuum generator structure of the present invention; Figure 5 This is a schematic diagram of the synchronous transmission mechanism of the present invention; Figure 6 This is a cross-sectional schematic diagram of the sliding sleeve structure of the present invention; Figure 7 This is a schematic diagram of the upper support mechanism of the present invention; Figure 8 This is a schematic diagram of the installation platform of the present invention.

[0020] Reference numerals: 1. Welding table; 2. Welding mechanism; 3. Through groove; 4. Strip support; 5. Adjusting screw; 6. Guide groove; 7. Supporting vertical rod; 8. Installation platform; 9. Guide ring; 10. Controller; 11. Moving groove; 12. Fixed seat; 13. Pressure sensor; 14. Lower support mechanism; 15. Upper support mechanism; 151. Cylinder; 152. Connecting rod; 153. Suction head; 154. Support column; 155. Support head; 156. Slide groove; 157. Pressure block; 158. Fastening bolt; 16. First rack; 17. Second rack; 18. First gear; 19. Second gear; 20. Third rack; 21. Sliding sleeve; 22. Contact rod; 23. Elastic element; 24. Vacuum generator; 25. Solenoid valve; 26. High-temperature resistant pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments.

[0023] See attached document Figure 1-8 A welding device for processing electric stoves includes a welding table 1 and a welding mechanism 2 disposed on the welding table 1.

[0024] A through groove 3 is provided on the welding table 1. The electric stove base is placed on the through groove 3. The size of the through groove 3 needs to be smaller than the size of the base. The support lug to be welded is placed inside the base at the position to be welded, so that the welding mechanism 2 can work from the side.

[0025] like Figure 2 and Figure 3 As shown, a strip bracket 4 is fixedly provided on one side of the through groove 3. The strip bracket 4 is parallel to one side of the through groove 3. Guide grooves 6 are respectively opened on the upper and lower sides of the strip bracket 4. The movable bracket assembly is slidably connected in the upper and lower guide grooves 6 and can move smoothly along them.

[0026] The upper end of the movable support assembly is connected to an upper support mechanism 15, and the lower end is connected to a lower support mechanism 14. The upper support mechanism 15 abuts against the root area of ​​the support ear from top to bottom, while the lower support mechanism 14 supports the base from bottom to top at the position corresponding to the support ear. The two form a vertical alignment clamp. Since the support ear of the electric stove is usually made of a thin plate with a thickness of no more than 1.5mm, it is easy to soften when heated during welding and is prone to micron-level plastic deformation. After welding, it may also warp due to the release of residual stress. This device applies rigid constraints through the coordinated action of the upper support mechanism 15 and the lower support mechanism 14, which effectively limits the displacement, collapse and cooling rebound of the support ear under heat, thereby significantly improving the welding accuracy, weld formation quality and consistency of batch products.

[0027] To accommodate multiple lugs at different positions on the same base, the movable bracket assembly is also equipped with a synchronous drive mechanism, which drives the upper support mechanism 15 and the lower support mechanism 14 to adjust synchronously to the target welding position in the lateral direction, thereby taking into account both the versatility of multiple product models and the clamping accuracy.

[0028] Specifically, refer to Figure 3 and Figure 8 The movable support assembly includes a vertical support rod 7 that runs through the upper and lower guide grooves 6. The upper and lower ends of the rod are fixedly connected to the mounting platform 8. An adjusting screw 5 is installed inside the strip bracket 4 and rotates laterally. One end of the adjusting screw 5 is connected to the output shaft of a servo motor or stepper motor, and the other end passes through the threaded hole in the middle of the support rod 7 and forms a threaded engagement with it. When the motor drives the adjusting screw 5 to rotate, the support rod 7 is constrained by the guide groove 6 and can only move laterally, thereby driving the entire movable support assembly and the upper support mechanism 15 and the lower support mechanism 14 to move synchronously, so as to achieve rapid alignment of different support lug positions.

[0029] Further, refer to Figure 4 and Figure 5 As shown, the synchronous drive mechanism includes a first rack 16 and a second rack 17. The first rack 16 is slidably disposed in the moving groove 11 opened in the upper mounting platform 8, and the second rack 17 is slidably disposed in the corresponding moving groove 11 in the lower mounting platform 8. The first rack 16 meshes with the first gear 18 rotatably mounted on the upper mounting platform 8, and the second rack 17 meshes with the second gear 19 rotatably mounted on the lower mounting platform 8.

[0030] The first gear 18 and the second gear 19 are coaxially fixedly connected by a rotating rod. The rotating rod passes through the fixed base 12 between the upper and lower mounting platforms 8 and rotates with the bearing on the fixed base 12 to ensure smooth transmission. The rotating shaft of the second gear 19 is connected to the output shaft of another motor (or linked to the main drive shaft through a coupling). When the motor starts, the first gear 18 and the second gear 19 rotate synchronously, driving the first rack 16 and the second rack 17 to slide along their respective moving grooves 11, thereby driving the upper support mechanism 15 and the lower support mechanism 14 to move closer to or further away from the lugs, completing the clamping or releasing action. This structure ensures that the upper and lower support forces are applied symmetrically, avoiding skew caused by unilateral force.

[0031] refer to Figure 7 The upper support mechanism 15 specifically includes a cylinder 151, the tail of which is fixed to the platform provided at the outer end of the first rack 16. The piston rod end of the cylinder 151 is fixedly connected to one end of the connecting rod 152. The other end of the connecting rod 152 extends downward and a support column 154 is fixedly provided at its lower end. An annular support head 155 is fixedly installed at the lower end of the support column 154 for direct contact with the upper surface of the support lug.

[0032] refer to Figure 7 To accommodate lugs of different diameters or shapes, the support head 155 is provided with at least three radial grooves 156 evenly distributed around its circumference. A pressure block 157 is slidably disposed in each groove 156. The bottom surface of the pressure block 157 is flush with the bottom surface of the support head 155 to ensure that the clamping surfaces are coplanar. The pressure block 157 has protruding limiting strips on both sides, which slide in cooperation with the limiting grooves on the side walls of the groove 156 to prevent the pressure block 157 from coming out. The pressure block 157 is screwed into the top of the support head 155 by fastening bolts 158 and pressed against the upper surface of the pressure block 157 to achieve position locking. This structure allows for quick adjustment of the clamping size without changing the clamps, improving the flexibility of the equipment.

[0033] Furthermore, a suction head 153 is fixedly connected to the lower end of the connecting rod 152. The suction head 153 has a hollow cavity structure, and its lower side is fixedly connected to the upper end of the support column 154 to form a sealed channel. Several suction hoods are distributed around its outer periphery, and the opening of each suction hood faces the weld area of ​​the support lug. During welding, the fumes are sucked into the suction head 153 nearby, achieving efficient local capture and avoiding diffusion to the workshop environment.

[0034] To enable automatic start and stop of the suction function, a vacuum generator 24 is also installed on the upper mounting platform 8. (See reference...) Figure 4 The negative pressure suction port of the vacuum generator 24 is connected to the exhaust end of the suction head 153 through a flexible high-temperature resistant pipe 26 (such as a silicone reinforced pipe with a temperature resistance of ≥200℃). The exhaust port of the vacuum generator 24 is connected to an external filter bag through a regular hose for collecting welding slag particles.

[0035] A solenoid valve 25 is installed on the compressed air inlet pipe of the vacuum generator 24. The solenoid valve 25 is a normally closed two-position two-way valve. Its coil is powered and controlled by the controller 10 (such as a PLC or a single-chip microcomputer control module). When the solenoid valve 25 is energized and opened, compressed air enters the vacuum generator 24, immediately generating negative pressure and starting suction. When the power is cut off, the air path is closed and suction stops.

[0036] Crucially, to ensure that the suction action and the clamping position are strictly aligned, a third rack 20 is slidably mounted on the upper mounting platform 8. This third rack 20 meshes with the other side of the first gear 18. Therefore, when the first gear 18 rotates and drives the first rack 16 to move, the third rack 20 slides in the opposite direction simultaneously. A sliding sleeve 21 is fixedly connected to the outer end of the third rack 20. An abutment rod 22 is slidably mounted inside the sliding sleeve 21. The front end of the abutment rod 22 faces and always abuts against the sensing surface of the pressure sensor 13 embedded on the mounting platform 8.

[0037] The sliding sleeve 21 is provided with an elastic element 23, which is preferably a compression spring. One end of the elastic element 23 is detachably connected to the tail of the abutment rod 22 through a buckle, thread or hook structure (for example, the tail of the abutment rod 22 has a radial through hole, and the hook at the end of the spring is inserted into the hole to achieve hooking, or the tail of the abutment rod 22 has an external thread, which is screwed into a spring seat with an internal thread). The other end abuts against the limiting step on the inner wall of the sliding sleeve 21. The elastic element 23 provides a preload force so that the abutment rod 22 always presses against the pressure sensor 13 when there is no external force interference.

[0038] It should be noted that the movement of the first rack 16 is mainly used to adjust the lateral position of the upper support mechanism 15 to align with the lugs of different layouts on the base. During this adjustment process, the first gear 18 rotates with the drive motor, synchronously driving the third rack 20 meshing with it to slide in the opposite direction, thereby causing the sliding sleeve 21 fixed to the outer end of the third rack 20 and the abutment rod 22 passing through it to move as a whole. Since the front end of the abutment rod 22 always faces the pressure sensor 13, in order to ensure that the third rack 20 can slide freely without rigid interference within the full stroke range of the first rack 16, an elastic element 23 is provided in the sliding sleeve 21. One end of the elastic element 23 is detachably connected to the abutment rod 22, such as through a hook or threaded structure, and the other end abuts against the inner wall of the sliding sleeve 21. Its function is to provide a buffer stroke. When the third rack 20 moves with the first rack 16, the elastic element 23 allows the abutment rod 22 to extend and retract slightly within the sliding sleeve 21, thereby maintaining its continuous pressure on the pressure sensor 13 and avoiding mechanical hard limiting that hinders the normal movement of the gear and rack system.

[0039] In other words, as long as the third rack 20 is displaced, the abutment rod 22 will continue to press the pressure sensor 13 under the action of elastic preload. Only when the first rack 16 is fully reset to the initial position and the third rack 20 is synchronously retracted to the starting point, the abutment rod 22 will disengage from the pressure sensor 13 under the rebound action of the elastic element 23, thus achieving accurate switching of the status signal.

[0040] To further ensure the stability of the movement trajectory of the contact rod 22 and avoid mis-triggering due to skewness, a guide ring 9 is fixedly installed on the mounting platform 8 in front of the pressure sensor 13. The contact rod 22 passes through the guide ring 9 and slides with the inner hole of the guide ring 9 to form a linear guiding constraint.

[0041] The controller 10 is configured to immediately output a high-level signal when it receives a trigger signal from the pressure sensor 13, drive the solenoid valve 25 to open, and start the vacuum generator 24 to perform fume extraction. When the signal from the pressure sensor 13 disappears, the controller 10 closes the solenoid valve 25 to ensure that the residual fume after welding is fully extracted, while avoiding unnecessary gas consumption.

[0042] It is worth noting that the lower support mechanism 14 is completely identical to the upper support mechanism 15 except that it does not have a suction head 153. The support head 155 of the lower support mechanism 14 abuts against the base from below, so that the base fits against the root of the support ear, and works with the upper support mechanism 15 to form a rigid clamping structure that is opposed to each other, effectively limiting the micro-deformation of the support ear under the action of welding heat.

[0043] In the above device, the cylinder 151 is the core driving element of the upper support mechanism 15. The cylinder 151 is only used to apply a stable and controllable support reaction force. Its stroke and thrust are preset according to the lug structure and welding heat deformation characteristics to ensure that constant contact is maintained during the welding process without overpressure or loosening. This support action is independent of the welding process and does not participate in the welding torch positioning or welding energy input.

[0044] As for welding mechanism 2, it has the functions of autonomous movement, rotation and welding, which is a conventional technology in this field and can be implemented by existing servo slides, rotary arms or robot systems, so it will not be discussed in detail here.

[0045] In summary, firstly, the electric stove base is placed on the welding table 1, covering the through groove 3, and the support ear to be welded is positioned in the predetermined position inside the base. Then, the adjusting screw 5 is started to drive the motor, which drives the support rod 7 to move laterally along the guide groove 6 of the strip bracket 4, so that the moving bracket assembly moves horizontally as a whole until the upper support mechanism 15 and the lower support mechanism 14 are aligned with the welding position of the target support ear.

[0046] Subsequently, the motor of the synchronous drive mechanism is started, driving the first gear 18 and the second gear 19 to rotate synchronously, thereby driving the first rack 16 and the second rack 17 to slide synchronously along their respective moving grooves 11, so that the upper support mechanism 15 and the lower support mechanism 14 move laterally to directly above and below the target support ear, forming an upper and lower opposing support layout. Before operation, the position of the pressure block 157 in the circumferential sliding groove 156 of the support head 155 can be pre-adjusted according to the specific size of the support ear, and locked by the fastening bolt 158 ​​to ensure that the bottom surfaces of each pressure block 157 are coplanar and fit well with the root of the support ear. After positioning is completed, the piston rod of the cylinder 151 extends, pushing the connecting rod 152 to move downward, synchronously driving the suction head 153, the support column 154 and the support head 155 to accurately abut against the root area of ​​the support ear, providing stable and rigid anti-deformation support for subsequent welding.

[0047] While the first gear 18 rotates, the third rack 20 is synchronously driven to slide, which in turn drives the sliding sleeve 21 and the abutment rod 22 to move. Due to the pre-tightening effect of the elastic element 23, the abutment rod 22 always presses the pressure sensor 13. When the pressure sensor 13 is squeezed, it outputs a signal. After receiving the signal, the controller 10 immediately opens the solenoid valve 25 and starts the vacuum generator 24. The suction head 153 and its circumferentially distributed suction hoods are used to collect the dust in the weld area at close range, achieving efficient local dust removal.

[0048] After welding is completed, the synchronous drive mechanism reverses, and the upper support mechanism 15 and the lower support mechanism 14 synchronously retract to their initial positions. When the first rack 16 is fully reset, the third rack 20 also retracts to the starting point. The contact rod 22 disengages from the pressure sensor 13 under the action of the elastic element 23, the trigger signal disappears, and the controller 10 immediately closes the solenoid valve 25 to stop suction. It can delay for a few seconds to remove residual fumes. Thus, the welding and clamping cycle of one lug is completed. The device can continue to be adjusted to the next station and repeat the above process to achieve high-precision and automated welding operations for multiple lugs and multiple models of products.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric stove welding device for processing, comprising a welding table (1) and a welding mechanism (2) arranged on the welding table (1), characterized in that, The welding table (1) is provided with a through groove (3), the electric stove base is placed above the through groove (3), the support ear to be welded is placed inside the electric stove base, a strip bracket (4) is fixed on one side of the through groove (3), and guide grooves (6) extending laterally are provided on the upper and lower sides of the strip bracket (4), the movable bracket assembly is slidably connected in the guide groove (6), the upper end of the movable bracket assembly is connected to an upper support mechanism (15), the lower end of the movable bracket assembly is connected to a lower support mechanism (14), the upper support mechanism (15) and the lower support mechanism (14) respectively abut against the root area of ​​the support ear from the upper and lower sides, which is used to provide rigid clamping for the support ear that is easily softened by heat and produces micro-deformation during the welding process, the movable bracket assembly is also provided with a synchronous drive mechanism, which is configured to drive the upper support mechanism (15) and the lower support mechanism (14) to synchronously adjust to the welding position of the corresponding support ear in the lateral direction, thereby effectively suppressing the displacement and collapse caused by heat input while adapting to different support ear layouts.

2. An electric range welding apparatus according to claim 1, wherein The movable support assembly includes a support rod (7) that runs vertically through the upper and lower guide grooves (6). The upper and lower ends of the support rod (7) are respectively fixed with an installation platform (8). An adjusting screw (5) is rotatably installed in the strip bracket (4). One end of the adjusting screw (5) is connected to the output shaft of the motor, and the other end passes through the middle of the support rod (7) and is threaded into the support rod (7) to drive the support rod (7) to move laterally along the guide groove (6).

3. An electric range welding apparatus according to claim 1, wherein The synchronous drive mechanism includes a first rack (16) and a second rack (17). The first rack (16) and the second rack (17) are slidably disposed in the moving slots (11) opened on the upper and lower mounting platforms (8). The first rack (16) meshes with the first gear (18) rotatably mounted on the upper mounting platform (8), and the second rack (17) meshes with the second gear (19) rotatably mounted on the lower mounting platform (8). The first gear (18) and the second gear (19) are coaxially connected by a rotating rod. The rotating rod passes through the fixed seat (12) between the upper and lower mounting platforms (8) and is rotatably connected to the fixed seat (12). The rotating shaft of the second gear (19) is connected to the output shaft of the motor. The outer end of the first rack (16) is fixedly connected to the upper support mechanism (15), and the outer end of the second rack (17) is fixedly connected to the lower support mechanism (14) to realize the synchronous lateral movement of the upper support mechanism (15) and the lower support mechanism (14).

4. An electric range welding apparatus according to claim 3, wherein The upper support mechanism (15) includes a cylinder (151), the tail of which is fixed on the platform at the end of the first rack (16), and the piston rod end is fixedly connected to one end of the connecting rod (152). A support column (154) is provided below the other end of the connecting rod (152), and an annular support head (155) is fixedly provided at the lower end of the support column (154).

5. An electric range welding apparatus according to claim 4 wherein, The support head (155) has at least three circumferential grooves (156), and a pressure block (157) is slidably arranged in each groove (156). The bottom surface of the pressure block (157) is flush with the bottom surface of the support head (155). Limiting strips are provided on both sides of the pressure block (157) to slide and cooperate with the limiting grooves provided on the side wall of the groove (156), and are locked and fixed by fastening bolts (158) to adapt to the support ears of different sizes.

6. An electric range welding apparatus according to claim 5 wherein, The lower end of the connecting rod (152) is fixedly connected to a suction head (153). The suction head (153) has a hollow structure, and its lower side is fixedly connected to the upper end of the support column (154). Several suction hoods are distributed around its outer periphery to capture smoke and dust at close range during welding.

7. A welding device for processing electric stoves according to claim 2, characterized in that, A vacuum generator (24) is installed on the upper mounting platform (8). The negative pressure suction port of the vacuum generator (24) is connected to the air outlet of the suction head (153) through a high temperature resistant pipe (26). The exhaust port of the vacuum generator (24) is connected to an external filter bag through a hose. A solenoid valve (25) is provided on the compressed air inlet pipe of the vacuum generator (24). The solenoid valve (25) is controlled by the controller (10) to start and stop the suction action.

8. A welding apparatus for processing electric stoves according to claim 7, characterized in that, A third rack (20) is slidably disposed on the upper mounting platform (8). The third rack (20) meshes with the other side of the first gear (18). A sliding sleeve (21) is connected to the outer end of the third rack (20). An abutment rod (22) is slidably disposed inside the sliding sleeve (21). The front end of the abutment rod (22) abuts against the pressure sensor (13) embedded on the mounting platform (8). An elastic element (23) is provided inside the sliding sleeve (21) to maintain the pressure of the abutment rod (22) on the pressure sensor (13) when the third rack (20) slides with the first gear (18) rotating. The abutment rod (22) disengages from the pressure sensor 13 only when the first rack (16) is reset to the initial position and the third rack (20) is synchronously retracted to the starting point.

9. A welding apparatus for processing electric stoves according to claim 8, characterized in that, A guide ring (9) is fixedly installed on the mounting platform (8) in front of the pressure sensor (13). The abutment rod (22) passes through the guide ring (9) and slides with it to limit the movement trajectory of the abutment rod (22) and ensure that it presses the pressure sensor (13) stably.

10. A welding apparatus for processing electric stoves according to claim 9, characterized in that, The controller (10) is configured to immediately open the solenoid valve (25) to start the vacuum generator (24) to extract the dust when it receives the trigger signal from the pressure sensor (13), and close the solenoid valve (25) when the signal from the pressure sensor (13) disappears, so as to ensure that the residual dust after welding is fully extracted.

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