Welding equipment for metal door production and processing

Abstract

The present invention relates to the technical field of metal door welding, and specifically to a welding device for producing and processing metal doors, comprising: a conveying frame 1 for conveying door panels, a conveying frame 2 for conveying reinforcing ribs, a truss erected on the conveying frame 1 and the conveying frame 2, a grabbing mechanism for grabbing the reinforcing ribs onto the door panels, and a positioning mechanism for positioning and fixing the reinforcing ribs; the present invention relates to a welding device for producing and processing metal doors, wherein a cylinder 3 drives a pressure member to squeeze the top of the reinforcing rib to achieve vertical positioning and pressing of the reinforcing rib, while a side positioning plate moves downward with the pressure member under the drive of a guide groove, approaches each other, presses the reinforcing rib upward and fixes it laterally, thereby improving the stability of the device and reducing the possibility of warping of the reinforcing rib during welding.

Description

Technical Field

[0001] The present invention relates to the technical field of metal door welding, in particular to welding equipment for producing and processing metal doors. Background Art

[0002] As a core component of modern architecture, combining both functionality and decoration, metal doors are undergoing continuous innovation in manufacturing processes driven by advancements in materials science and welding technology. The current metal door system has evolved into a diversified landscape dominated by materials such as aluminum alloy, stainless steel, iron, and copper. This includes fire-rated doors, security doors, aluminum alloy glass doors, and copper doors, and is widely used in residential, commercial, and industrial settings.

[0003] Patent application number CN202410621150.8 relates to the field of welding technology and includes: a support frame with a workbench on top; a feeding mechanism comprising two first material frames, one at each end of the support frame, with a first push plate movable back and forth between the first material frames for pushing door panels; multiple second material frames on either side of the support frame, each with a top plate and a second push plate on one side for pushing reinforcement rods; a positioning mechanism comprising ridges and positioning rods, one at each end of the workbench, for limiting the position of the door panels; a stopper and a clamping block, one on each side of the workbench, for limiting the position of the door panels; a connecting frame between the ridges and the positioning rods, with two stoppers and a clamping plate with adjustable spacing below the connecting frame for limiting the position of the reinforcement rods; and a welding mechanism, located above the workbench, comprising a movable block with a welding gun below the block for welding the car door panels. The system can automatically transport and weld door panels and reinforcement rods, improving efficiency and avoiding excessive equipment costs.

[0004] This patent does enable efficient and automatic transportation and welding of door panels and reinforcing rods; however, since the reinforcing ribs are common materials, they are not carefully and specially protected during the actual storage and retrieval process. Therefore, when the reinforcing ribs are actually used, the bottom thin plate will more or less have slight deformation and warping, and during the welding process, the material expansion and contraction may be inconsistent due to uneven heat input. Therefore, when welding the reinforcing rods, manual inspection and repair are required before welding, which greatly increases the workload of the operator.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the Invention

[0006] The object of the present invention is to provide a welding device for metal door production and processing that can effectively solve the above technical problems.

[0007] In order to achieve the purpose of the present invention, the following technical solutions are adopted:

[0008] A welding device for producing and processing metal doors, comprising: a first conveying frame for conveying door panels, a second conveying frame for conveying reinforcing ribs, a truss mounted on the first and second conveying frames, a gripping mechanism for gripping the reinforcing ribs onto the door panels, and a positioning mechanism for positioning and fixing the reinforcing ribs;

[0009] The grabbing mechanism includes: a slider slidably mounted on the truss, a fixed plate slidably mounted below the slider, a first cylinder fixedly mounted at both ends of the fixed plate, a second cylinder driving the fixed plate to move up and down along the slider, and a power source driving the slider to move along the truss erection direction;

[0010] The positioning mechanism includes: a driving plate slidably mounted on the fixed plate, a cylinder three fixedly mounted on the driving plate, a pressure piece fixedly connected to the piston rod of the cylinder three, a limiting rod fixedly mounted on the pressure piece, a side positioning plate slidably mounted on the limiting rod, a guide groove that synchronously guides the side positioning plate to the transverse fixation of the reinforcing rib as the cylinder three drives the pressure piece downward, and a driving assembly that drives the driving plate to move along the fixed plate; the side positioning plate is slidably mounted in the guide groove.

[0011] Furthermore, the guide grooves are provided in two groups along the center line of the pressing member in a mirror image; and the slotting paths of the guide grooves gradually approach the pressing member from top to bottom.

[0012] Furthermore, the driving assembly includes: a driving motor fixedly mounted on the fixing plate; a threaded rod coaxially fixedly connected to the driving motor; a threaded hole opened on the driving plate; and the driving plate is threadedly connected to the threaded rod through the threaded hole.

[0013] Furthermore, a limiting cylinder is provided on the conveying frame.

[0014] Furthermore, the pressure member is composed of a mounting sleeve, an extrusion rod, a spring 1, and a roller; the mounting sleeve is fixedly connected to the piston rod of the cylinder 3; the extrusion rod is slidably installed in the mounting sleeve through a limit member; the extrusion end of the extrusion rod is rotatably installed with a roller; the other end of the extrusion rod is elastically connected to the inner cavity of the mounting sleeve through a spring 1.

[0015] Furthermore, the side positioning plate is provided with a welding gun and an adjustment component for adjusting the angle of the welding gun;

[0016] The adjustment assembly consists of a fan-shaped plate, an arc-shaped guide groove opened on the fan-shaped plate, a guide rod inserted into the arc-shaped guide groove, a mounting seat, and a tightening bolt; the guide rod is fixedly mounted on the mounting seat; and the welding gun is fixedly mounted on the mounting seat.

[0017] Furthermore, the mounting sleeve is provided with a knocking component for knocking the reinforcing ribs as the driving plate moves;

[0018] The knocking assembly includes: a sleeve slidably installed in the mounting sleeve, a knocking rod slidably installed in the sleeve, a flange opened on the knocking rod, a second spring elastically installed on the flange and the inner wall of the sleeve, a rack 1 fixedly installed outside the sleeve, a gear meshing with the rack 1, a rack 2 symmetrically meshing on the other side of the gear, and a driven assembly that moves with the driving plate to drive the knocking rod to knock on the welded reinforcement ribs; the rack 2 is fixedly connected to the extrusion rod.

[0019] Furthermore, the driven assembly includes: a connecting rod vertically fixedly installed on the knocking rod, a back plate fixedly installed on the fixed plate, and a wave plate fixedly installed on the back plate; the connecting rod passes through the sleeve and extends to the back plate; a section of the connecting rod is located above the wave plate.

[0020] Furthermore, a sliding rheostat is provided in the mounting sleeve, and the extrusion rod is fixedly connected to a paddle of the sliding rheostat.

[0021] Compared with the prior art, the present invention has the following beneficial effects: a welding device for metal door production and processing of the present invention uses a positioning mechanism, in which the cylinder drives the three-way pressure member to squeeze the top of the reinforcement rib to achieve vertical positioning and pressing of the reinforcement rib, while the side positioning plate moves downward with the pressure member under the drive of the guide groove, and approaches each other, pressing the reinforcement rib upward and fixing it laterally at the same time, thereby improving the stability of the device and reducing the possibility of the reinforcement rib warping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0023] Figure 1 This is a structural schematic diagram of a welding device for producing and processing metal doors according to the present invention;

[0024] Figure 2 It is a structural diagram of the grabbing mechanism in the present invention;

[0025] Figure 3 Schematic diagram of the structure of the positioning mechanism of the present invention;

[0026] Figure 4 for Figure 3 A partial enlarged view of part A;

[0027] Figure 5 Schematic diagram of the structure of the regulating component in the present invention;

[0028] Figure 6 for Figure 5 A partial enlarged view of part B;

[0029] Figure 7 It is a structural schematic diagram of the knocking component of the present invention.

[0030] In the figure: 1, conveyor frame 1; 2, conveyor frame 2; 3, truss; 4, grabbing mechanism; 5, positioning mechanism; 41, slider; 42, fixing plate; 43, cylinder 1; 44, cylinder 2; 51, driving plate; 52, cylinder 3; 53, pressing member; 54, limiting rod; 55, side positioning plate; 56, guide groove; 571, driving motor; 572, threaded rod; 573, threaded hole; 11, limiting cylinder; 531, mounting sleeve; 532, extrusion rod; 533, spring 1; 53 4. Roller; 551. Welding gun; 552. Adjustment assembly; 5521. Sector plate; 5522. Arc guide groove; 5523. Guide rod; 5534. Mounting seat; 5525. Tightening bolt; 581. Sleeve; 582. Knocking rod; 583. Flange; 584. Spring 2; 585. Rack 1; 586. Gear; 587. Rack 2; 588. Follower assembly; 5881. Connecting rod; 5882. Back plate; 5883. Corrugated plate; 6. Door panel; 7. Reinforcement rib. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0032] In the description of the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0033] like Figures 1 to 7As shown, the present invention is a welding device for producing and processing metal doors, comprising: a conveying frame 1 for conveying a door panel 6, a conveying frame 2 for conveying a reinforcing rib 7, a truss 3 erected on the conveying frame 1 and the conveying frame 2, a grabbing mechanism 4 for grabbing the reinforcing rib 7 onto the door panel 6, and a positioning mechanism 5 for positioning and fixing the reinforcing rib 7;

[0034] During the welding process of the door panels 6 and the ribs 7, workers must precisely place the door panels 6 to be processed onto conveyor rack 1, and simultaneously place the ribs 7 onto conveyor rack 2, in sequence. It should be noted that both conveyor racks 1 and 2 are equipped with independent transmission mechanisms. This transmission mechanism preferably utilizes a motor-driven transmission roller, but can also be replaced with a motor-driven belt transmission depending on actual production needs. As transmission mechanisms are mature technologies in this field, they will not be elaborated on in detail here.

[0035] Driven by the power of the transmission mechanism, the door panel 6 placed on the conveyor frame 1 and the reinforcement rib 7 on the conveyor frame 2 2 will move synchronously and smoothly toward the truss 3. When the door panel 6 and the reinforcement rib 7 are moved to the preset work position directly below the truss 3, the grasping mechanism 4 is activated, accurately grasping the reinforcement rib 7 on the conveyor frame 2 2, and transferring it to the position above the corresponding door panel 6 on the conveyor frame 1 where welding is required. Subsequently, the positioning mechanism 5 intervenes to accurately spatially position the reinforcement rib 7 and the door panel 6, and reliably press and fix them, providing stability for the subsequent welding process. After the welding operation is completed, the transmission mechanism continues to operate, driving the door panel 6 that has completed the welding of a single reinforcement rib 7 to continue moving along the production line, entering the next process link, and completing the welding operation of multiple reinforcement ribs 7 in sequence; at the same time, the subsequent door panels 6 and reinforcement ribs 7 to be processed are continuously conveyed to the bottom of the truss 3 under the action of the transmission mechanism, realizing the continuous welding operation of multiple door panels 6. Through the above-mentioned process flow design, the overall operating stability and production continuity of the device are effectively improved, and the production efficiency is significantly improved.

[0036] The grabbing mechanism 4 includes: a slider 41 slidably mounted on the truss 3, a fixed plate 42 slidably mounted below the slider 41, a cylinder 1 43 fixedly mounted at both ends of the fixed plate 42, a cylinder 2 44 driving the fixed plate 42 to move up and down along the slider 41, and a power source driving the slider 41 to move along the erection direction of the truss 3.

[0037] When the door panel 6 and reinforcement rib 7 are smoothly transported via the conveyor to the pre-set station directly below the truss 3, the optimally configured linear motion module, acting as a power source, drives the connected slider 41 along the guide rails of the truss 3, precisely moving it linearly from the side of conveyor frame 1 to the side of conveyor frame 2 2. During this process, cylinder 2 44 activates, pushing the fixed plate 42 connected to its end toward the position of the reinforcement rib 7 until a secure fit is achieved. Simultaneously, the control system coordinates and regulates cylinder 1 43, causing its piston rod to extend horizontally in the direction of the reinforcement rib 7 and precisely fixate at a pre-set point between the two cylinders 1 43, thereby firmly clamping the reinforcement rib 7.

[0038] Subsequently, the power source (linear motion module) drives slider 41 to perform reverse linear motion along the guide rails of truss 3, driving the clamped rib 7 to move synchronously until it reaches the corresponding position directly above door panel 6. At this point, the control system issues another command to drive the piston rod of cylinder 1 43 to retract, releasing the clamping state of rib 7. Under the influence of gravity and precise positioning, rib 7 is stably placed on the designated surface of door panel 6, thus completing the automated handling process of rib 7.

[0039] By introducing the above-mentioned automated gripping mechanism, the traditional manual handling method was successfully replaced, effectively reducing labor cost investment, while significantly improving the accuracy and stability of the handling process, laying a solid foundation for subsequent efficient welding operations.

[0040] The conveying frame 1 is also provided with a limit cylinder 11; when the reinforcing rib 7 is conveyed to the surface of the door panel 6, the limit cylinder 11 is started synchronously, and its piston rod is extended to the side of the door panel 6, thereby fixing the door panel 6 to prevent the door panel 6 from tilting during transportation, causing the position where the reinforcing rib 7 falls on the door panel 6 to tilt synchronously, thereby increasing the product scrap rate during production.

[0041] The positioning mechanism 5 includes: a driving plate 51 slidably mounted on the fixed plate 42, a cylinder three 52 fixedly mounted on the driving plate 51, a pressure piece 53 fixedly connected to the piston rod of the cylinder three 52, a limiting rod 54 fixedly mounted on the pressure piece 53, a side positioning plate 55 slidably mounted on the limiting rod 54, a guide groove 56 that synchronously guides the side positioning plate 55 to be fixed laterally to the reinforcing rib 7 as the cylinder three 52 drives the pressure piece 53 to move downward, and a driving component that drives the driving plate 51 to move along the fixed plate 42; the side positioning plate 55 is slidably mounted in the guide groove 56.

[0042] The guide grooves 56 are provided in two groups along the center line of the pressing member 53 in a mirror image. The slotting path of the guide grooves 56 gradually approaches the pressing member from top to bottom.

[0043] When the rib 7 is precisely transferred to the predetermined welding station on the door panel 6 via the gripping mechanism, the control system simultaneously activates cylinder 3 52. Cylinder 3 52 drives its piston rod in a linear downward motion, pushing the rigidly connected pressing member 53 downward vertically until it forms a secure contact with the top surface of the rib 7 and applies a predetermined clamping force, effectively positioning and clamping the rib 7 in place. This effectively prevents displacement of the rib 7 during subsequent welding due to factors such as thermal stress or mechanical vibration, ensuring welding accuracy.

[0044] While the pressing member is pressing down, the side positioning plates 55 move downward along with the pressing member 53 under the drive of the guide groove 56, and approach each other, pressing the reinforcing rib 7 upward while fixing it laterally; it should be noted here that by setting up two groups of side positioning plates 55, it is only necessary to reserve a position for welding the reinforcing rib 7 on the door panel 6 directly below the pressing member 53, and the pre-welding correction of the reinforcing rib 7 can be achieved by the synchronous opposite movement of the two groups of side positioning plates 55; thereby ensuring the accuracy of the welding of the reinforcing rib 7.

[0045] The driving assembly includes: a driving motor 571 fixedly mounted on the fixing plate 42; a threaded rod 572 coaxially fixedly connected to the driving motor 571; a threaded hole 573 opened on the driving plate 51; and the driving plate 51 is threadedly connected to the threaded rod 572 through the threaded hole 573.

[0046] After the reinforcing rib 7 is synchronously fixed by the pressing piece 53 and the side positioning plate 55, the driving motor 571 is started, and the driving motor 571 drives the driving plate 51 to move along the mounting frame, thereby guiding the pressing piece 53 and the side positioning plate 55 to move along the length direction of the reinforcing rib 7.

[0047] The pressing member 53 is composed of a mounting sleeve 531, an extrusion rod 532, a spring 1 533, and a roller 534. The mounting sleeve 531 is fixedly connected to the piston rod of the cylinder 3 52. The extrusion rod 532 is slidably mounted in the mounting sleeve 531 via a stopper. The extrusion end of the extrusion rod 532 is rotatably mounted with a roller 534. The other end of the extrusion rod 532 is elastically connected to the inner cavity of the mounting sleeve 531 via a spring 1 533.

[0048] When the pressing member 53 is required to press against the reinforcing rib 7, the air cylinder 3 52 pushes the mounting sleeve 531 and synchronously drives the extrusion rod 532 toward the reinforcing rib 7. The extrusion rod 532 secures the upper end of the reinforcing rib 7. The roller arrangement allows the extrusion rod 532 to slide on the reinforcing rib 7 when the motor drives the drive plate 51 to move, preventing scratches. When it is necessary to secure reinforcing ribs 7 of varying thicknesses, the spring arrangement ensures that the air cylinder pushes out the same distance, without affecting the positioning of the side positioning plate 55 on the reinforcing rib 7. This allows for welding of various thicknesses of reinforcing ribs 7, enhancing the practicality and versatility of the device.

[0049] As a further extension of the present application, a sliding rheostat is further provided in the mounting sleeve 531 , and the extrusion rod 532 is fixedly connected to a paddle of the sliding rheostat;

[0050] When the thickness change of the reinforcement rib 7 causes the extrusion rod 532 to produce axial displacement, the resistance value of the sliding rheostat will change linearly. After being processed by the signal conditioning circuit, the electrical signal is fed back to the PLC control system in real time. The system dynamically adjusts the welding speed parameters accordingly: for thick-section reinforcement ribs 7, the welding speed is automatically reduced to extend the heat input time to ensure that the molten pool is fully melted through; for thin-section areas, the welding speed is increased to prevent overheating and burn-through. This closed-loop control strategy is particularly suitable for situations where a single reinforcement rib 7 has multiple sections of thickness mutations. It effectively solves the problem of material expansion and contraction mismatch caused by uneven heat input in traditional open-loop control, significantly reduces the warping and deformation defect rate of the welded joint, and reduces the need for manual quality intervention. The side positioning plate 55 is provided with a welding gun 551 and an adjustment component 552 for adjusting the angle of the welding gun 551;

[0051] The adjustment assembly 552 consists of a fan-shaped plate 5521, an arc-shaped guide groove 5522 opened on the fan-shaped plate 5521, a guide rod 5523 inserted into the arc-shaped guide groove 5522, a mounting seat 5534, and a tightening bolt 5525; the guide rod 5523 is fixedly mounted on the mounting seat 5534; the welding gun 551 is fixedly mounted on the mounting seat 5534.

[0052] When the side positioning plate 55 moves downward with the cylinder three 52 and approaches the reinforcing rib 7, the welding gun 551 will be moved synchronously to the weld between the reinforcing rib 7 and the door panel 6, and then the driving plate 51 will be driven by the motor to move along the length direction of the reinforcing rib 7, so that the welding of the reinforcing rib 7 can be achieved; through the above structure, the downward pressing, positioning and welding of the reinforcing rib 7 can be carried out synchronously, thereby improving the stability and accuracy of the device.

[0053] When the welding gun 551 needs to be adjusted, the mounting seat 5534 can slide freely in the arc guide groove 5522 by turning and tightening the bolt 5525. The mounting seat 5534 is manually pushed to slide in the arc guide groove 5522, thereby adjusting the pitch angle of the welding gun 551, thereby accurately controlling the welding angle during welding and improving the welding effect.

[0054] The mounting sleeve 531 is also provided with a knocking component that moves with the driving plate 51 to knock the reinforcing rib 7;

[0055] The knocking assembly includes: a sleeve 581 slidably installed in the mounting sleeve 531, a knocking rod 582 slidably installed in the sleeve 581, a flange 583 opened on the knocking rod 582, a spring 2 584 elastically installed on the flange 583 and the inner wall of the sleeve 581, a rack 1 585 fixedly installed outside the sleeve 581, a gear 586 meshed with the rack 1 585, a rack 2 587 symmetrically meshed on the other side of the gear 586, and a driven assembly 588 that moves with the driving plate 51 to drive the knocking rod 582 to knock the welded reinforcing rib 7; the rack 2 587 is fixedly connected to the extrusion rod 532.

[0056] The driven assembly 588 includes: a connecting rod 5881 vertically fixedly installed on the knocking rod 582, a back plate 5882 fixedly installed on the fixed plate 42, and a wave plate 5883 fixedly installed on the back plate 5882; the connecting rod 5881 passes through the sleeve 581 and extends to the back plate 5882; a section of the connecting rod 5881 is located above the wave plate 5883.

[0057] When the cylinder 3 52 pushes the mounting sleeve 531 to move toward the reinforcing rib 7, the extrusion rod 532 is squeezed by the reinforcing rib 7 and moves upward. Through the meshing transmission of the rack 1 585, the gear 586, and the rack 2 587, the sleeve 581 and the knocking rod 582 mounted in the sleeve 581 are synchronously driven to approach the reinforcing rib 7 as the extrusion rod 532 moves upward.

[0058] It should be noted here that the sleeve 581 and the mounting sleeve 531 are provided with slots for the connecting rod 5881 to move up and down, and the connecting rod 5881 moves up and down with the wave plate 5883 without interference.

[0059] If the thickness of the reinforcing rib 7 is relatively thin, the extrusion rod 532 moves a small distance in the mounting sleeve 531. At this time, the knocking rod 582 cannot touch the surface of the reinforcing rib 7, and the connecting rod 5881 will not touch the wave plate 5883. This prevents cracks and deformation caused by knocking after welding due to stress concentration and structural fragility when welding thinner parts, and destroys the metal structure of the weld, ultimately reducing the strength and reliability of the joint.

[0060] If the thickness of the reinforcement rib 7 is large, the upward movement distance of the extrusion rod 532 increases, and the knocking rod 582 touches the surface of the reinforcement rib 7. Through the setting of the spring 2 584, the knocking rod 582 will not tend to the greater pressure of the reinforcement rib 7 due to the excessive thickness; while the knocking rod 582 moves downward, the connecting rod 5881 is close to the undulating trajectory of the wave plate 5883, so that when the motor drives the driving plate 51 to move, the connecting rod 5881 is guided by the wave plate 5883 to drive the knocking rod 582 to move up and down in the sleeve 581, thereby realizing the knocking of the welded reinforcement rib 7. In the door processing welding process, moderate knocking after welding the reinforcement rib 7 can effectively release residual stress and reduce deformation, while optimizing the weld formation and improving the structural strength and appearance quality.

[0061] What needs to be emphasized here is that the thicker the reinforcement rib 7 is, the greater the angle at which its connecting rod 5881 is affected by the fluctuations of the wave plate 5883, the greater the distance of the tension spring 2 584, and the greater the elastic force during rebound. Therefore, through the above structure, the knocking force can be adaptively adjusted according to the thickness of the reinforcement rib 7, which not only ensures that the welding stress of reinforcement ribs 7 of different thicknesses is fully released, but also avoids weld defects caused by insufficient or excessive knocking force, and significantly improves the process compatibility and structural reliability of door body processing.

[0062] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0063] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A welding device for metal door production and processing, characterized in that: include: A conveying frame 1 for conveying door panels, a conveying frame 2 for conveying reinforcement ribs, a truss erected on the conveying frame 1 and the conveying frame 2, a grabbing mechanism for grabbing the reinforcement ribs onto the door panels, and a positioning mechanism for positioning and fixing the reinforcement ribs; The grabbing mechanism includes: a slider slidably mounted on the truss, a fixed plate slidably mounted below the slider, a first cylinder fixedly mounted at both ends of the fixed plate, a second cylinder driving the fixed plate to move up and down along the slider, and a power source driving the slider to move along the truss erection direction; The positioning mechanism includes: a driving plate slidably mounted on the fixed plate, a cylinder 3 fixedly mounted on the driving plate, a pressing member fixedly connected to the piston rod of the cylinder 3, a limiting rod fixedly mounted on the pressing member, a side positioning plate slidably mounted on the limiting rod, a guide groove for synchronously guiding the side positioning plate to be laterally fixed to the reinforcing rib as the pressing member is driven downward by the cylinder 3, and a driving assembly for driving the driving plate to move along the fixed plate; the side positioning plate is slidably mounted in the guide groove; The guide grooves are provided in two groups along the center line of the pressing member in a mirror image; the guide grooves are gradually approached toward the pressing member from top to bottom; The pressing member is composed of a mounting sleeve, an extrusion rod, a first spring, and a roller; the mounting sleeve is fixedly connected to the piston rod of the third cylinder; the extrusion rod is slidably installed in the mounting sleeve through a limiter; the extrusion end of the extrusion rod is rotatably mounted with a roller; the other end of the extrusion rod is elastically connected to the inner cavity of the mounting sleeve through a first spring; The mounting sleeve is also provided with a knocking component for knocking the reinforcing ribs as the driving plate moves; The knocking assembly includes: a sleeve slidably mounted in the mounting sleeve, a knocking rod slidably mounted in the sleeve, a flange provided on the knocking rod, a second spring elastically mounted on the flange and the inner wall of the sleeve, a first rack fixedly mounted on the outside of the sleeve, a gear meshing with the first rack, a second rack symmetrically meshing with the other side of the gear, and a driven assembly that moves with the driving plate to drive the knocking rod to knock the welded reinforcing ribs; the second rack is fixedly connected to the extrusion rod; The driven assembly includes: a connecting rod vertically fixedly installed on the knocking rod, a back plate fixedly installed on the fixed plate, and a wave plate fixedly installed on the back plate; the connecting rod passes through the sleeve and extends to the back plate; a section of the connecting rod is located above the wave plate.

2. A welding device for metal door production and processing according to claim 1, characterized in that: The driving assembly includes: a driving motor fixedly mounted on the fixing plate; a threaded rod coaxially fixedly connected to the driving motor; a threaded hole provided on the driving plate; and the driving plate is threadedly connected to the threaded rod via the threaded hole.

3. The welding equipment for metal door production and processing according to claim 2, characterized in that: The conveying frame 1 is also provided with a limiting cylinder.

4. The welding equipment for metal door production and processing according to claim 1, characterized in that: The side positioning plate is provided with a welding gun and an adjustment component for adjusting the angle of the welding gun; The adjustment assembly consists of a fan-shaped plate, an arc-shaped guide groove opened on the fan-shaped plate, a guide rod inserted into the arc-shaped guide groove, a mounting seat, and a tightening bolt; the guide rod is fixedly mounted on the mounting seat; and the welding gun is fixedly mounted on the mounting seat.

5. The welding equipment for metal door production and processing according to claim 4, characterized in that: A sliding rheostat is also provided in the mounting sleeve, and the extrusion rod is fixedly connected to a paddle of the sliding rheostat.

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