Metal plate automatic machining and welding device

Abstract

The automatic metal plate machining and welding device comprises a welding assembly and a clamping assembly arranged on the welding assembly, the clamping assembly is provided with a movable buffering assembly, the buffering assembly comprises a positioning box body and a limiting plate arranged on the positioning box body in a sliding mode, and a buffering structure is arranged between the positioning box body and the limiting plate; a total containing cavity is formed in the buffering structure, a supporting piece capable of elastically deforming is arranged in the total containing cavity, a screw is further arranged between the limiting plate and the positioning box body, and the limiting plate is driven to move relative to the positioning box body by screwing the screw. According to the buffer structure, the limiting plate is driven by the screw to compress the buffer cavity, so that the bent end of the supporting piece is in contact with the cavity wall to realize rigid locking; and when the welding thermal deformation stress exceeds a threshold value, the micro holes in the side ends of the supporting pieces and the regulating valves of the external guide pipes cooperatively release pressure and are converted into a flexible buffering state, so that the thermal deformation requirement of the metal plate is met.

Description

Technical Field

[0001] The present invention relates to the technical field of metal plate welding, and particularly to an automatic processing and welding device for metal plates. Background Art

[0002] The automatic processing and welding device for metal plates includes a clamping part for fixing metal plates. Since a large amount of heat is generated during the welding process of metal materials, which causes the metal to rapidly expand and contract thermally. If a rigid clamping method is adopted, the welded joint of two metal plates may generate tolerances due to deformation, making it difficult to meet the requirements of high-precision welding processes.

[0003] To solve this problem, flexible clamping technologies are usually adopted, such as a buffer structure with a spring or a leaf spring as the core, or using flexible materials such as polyurethane gaskets as cushions. However, the spring or leaf spring buffer structure needs to be customized and adapted according to the shape, thickness, and thermal conductivity of the metal plate, and the adjustment process is complex and inconvenient to use; although buffer materials such as polyurethane gaskets can solve the drawbacks of the spring or leaf spring buffer structure, they are prone to plastic deformation after being compressed, resulting in the gradual failure of the flexible clamping performance, thereby affecting the welding quality and posing a great hidden danger. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] To solve the above-mentioned problems, the present invention provides the following technical solution: An automatic processing and welding device for metal plates, including a welding component and a clamping component provided on the welding component, characterized in that: a movable buffer component is provided on the clamping component, the buffer component includes a positioning box body and a limiting plate slidably arranged on the positioning box body, and the limiting plate is used to abut against the surface of the metal plate;

[0006] A buffer structure is provided between the positioning box body and the limiting plate;

[0007] A screw is further provided between the limiting plate and the positioning box body. By screwing the screw, the limiting plate is driven to move relative to the positioning box body to adjust the total volume of the buffer structure and cause the support member to deform.

[0008] Preferably, the buffer structure has a total volume inside, and an elastically deformable support member is provided in the total volume. The buffer structure and the support member are of an integral structure. A plurality of equally spaced support members are provided in the buffer structure, and the total volume is divided into a first volume, a second volume, and a third volume between adjacent support members.

[0009] Preferably, micro holes are formed in the support member, so that the second cavity and the third cavity of adjacent support members communicate with each other.

[0010] Preferably, the support member has two top ends and a bottom end. Between the two top ends is the bent end of the support member, and between the top end and the bottom end is the side end of the support member. The micro holes are arranged on the side end.

[0011] Preferably, the outer surface of the buffer structure is provided with wrinkles.

[0012] Preferably, a conduit is provided on the outer surface of the buffer structure and communicates with the second cavity and the third cavity, and a regulating valve is provided at the end of the conduit.

[0013] Preferably, openings are formed in the outer ring at the end of the conduit, a shaft convex is provided at the central position thereof, an outer ring protrusion is provided on the outer surface of the conduit, and a sealing ring is sleeved on the outer surface of the outer ring protrusion.

[0014] Preferably, the conduit is matched with the regulating valve. The fitting recess inside the regulating valve is hermetically sleeved with the outer ring protrusion of the conduit through the sealing ring, and the shaft recess of the regulating valve is matched with the shaft convex of the conduit, so that the regulating valve can be rotatably arranged on the conduit.

[0015] Preferably, an adaptation hole is provided on the regulating valve, and the regulating valve is rotated to make the adaptation hole intersect with the opening of the conduit.

[0016] Preferably, a plug is provided on the regulating valve through plugging glue, and the colloid of the plug is matched with the opening of the regulating valve.

[0017] The beneficial effects of the present invention are: intelligent switching and precise control between rigid / flexible states

[0018] Through the linkage design of the regulating valve 500 and the conduit 402 (alignment / misalignment of the adaptation hole 500b and the opening 402b), combined with the sealing effect of the plug 501, active or automatic switching between the rigid mode (closed cavity) and the flexible mode (medium flow) of the buffer structure 400 is realized.

[0019] Rigid mode: When the regulating valve is completely closed, the bent end 401-2 of the support member 401 is in close contact with the inner wall of the buffer structure, and each cavity is independently pressurized. The overall hardness is close to that of a solid gasket, ensuring the initial fixation of the metal plate.

[0020] Flexible mode: During welding thermal expansion, the stress of the metal plate breaks through the threshold of the plug 501, and the medium is depressurized through the micro holes 401a or the conduit 402, realizing non-linear buffering and avoiding deformation caused by stress concentration.

[0021] The linear elasticity of the traditional spring cannot adapt to the non-linear displacement of thermal expansion and contraction, while the present solution realizes dynamic adaptation through cavity pressure regulation and medium flow.

[0022] II. Process Simplification and High Structural Integration

[0023] The buffer structure 400 and the support 401 adopt an integrated design (such as hollow sealing molding). Only simple processes such as hot melting are required to complete the sealing, without complex assembly. The shape of the support 401 (such as M-shaped) and the cavity layout can be formed in one step by a mold, and different metal materials (such as stainless steel / aluminum alloy) can be flexibly adapted by adjusting the number of micropores 401a or the position of the conduit 402.

[0024] Compared with the traditional solution: traditional springs or elastic pieces need to be installed and debugged separately, and they occupy a large space; in this solution, it is directly integrated into the clamping assembly 200 without modifying the main structure of the welding device.

[0025] III. Multi-stage Buffering Mechanism: Through the flow-limiting effect of the micropores 401a, the medium pressure relief of the conduit 402, and the critical value triggering of the plug 501, a segmented buffering effect is formed, accurately matching the dynamic stress changes of the metal plate during the welding process.

[0026] Resistance to permanent deformation: The closed design of the first cavity 400a-1 provides pressure holding support to prevent the buffer structure from failing after excessive compression; the folds 400b enhance the structural resilience and durability.

[0027] Defects of the traditional structure: Springs are prone to fatigue after long-term compression and cannot achieve rigid locking; in this solution, through the synergistic effect of the regulating valve 500 and the support 401, it has the dual functions of rigid fixation and elastic buffering. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0029] Figure 1 It is a three-dimensional view of the whole of this embodiment.

[0030] Figure 2 It is a three-dimensional view of the clamping assembly of this embodiment.

[0031] Figure 3 It is a three-dimensional view of the buffer assembly of this embodiment.

[0032] Figure 4 It is a three-dimensional view of the buffer structure of this embodiment.

[0033] Figure 5 It is a partial structure diagram of this embodiment Figure 5 of this embodiment.

[0034] Figure 6 This is a perspective view of the regulating valve and the conduit in this embodiment.

[0035] Figure 7 This is an assembled sectional view of the regulating valve and the conduit in this embodiment.

[0036] In the figure: welding assembly 100, workbench 101, welding platform 102, welding moving bracket 103, first driving mechanism 104, second driving mechanism 105, welding gun 106;

[0037] Clamping assembly 200, support block 201, screw sleeve 202, screw rod 203;

[0038] Buffer assembly 300, positioning box body 301, limiting plate 302, sliding rod 303, screw 304;

[0039] Buffer structure 400, total cavity 400a, fold 400b, first cavity 400a-1, second cavity 400a-2, third cavity 400a-3, support member 401, micropore 401a, side end 401-1, bent end 401-2, top end 401-3, bottom end 401-4, conduit 402, outer ring protrusion 402a, sealing ring 402a-1, opening 402b, shaft protrusion 402c;

[0040] Regulating valve 500, mating recess 500a, mating hole 500b, shaft recess 500c, opening 500e, colloid 502, plugging colloid 503. Detailed implementation manners

[0041] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific implementation manners of the present invention will be made in conjunction with the accompanying drawings of the specification.

[0042] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0043] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that exclude each other with other embodiments.

[0044] Embodiment 1

[0045] Refer to Figures 1 to 5, which is an embodiment of the present invention. This embodiment provides an automatic processing and welding device for metal plates, including a welding component 100 and a clamping component 200 provided on the welding component 100. A movable buffer component 300 is provided on the clamping component 200. The clamping component 200 includes a support block 201, a screw sleeve 202, and a screw rod 203. The screw rod 203 is threadedly connected to the screw sleeve 202. One end of the screw rod 203 is rotatably connected to the outer surface of the positioning box body 301. By driving the top knob of the screw rod 203, the limiting plate 302 in the positioning box body 301 clamps the metal plate. The welding component 100 includes a workbench 101, a welding platform 102 fixed on the workbench 101, a welding moving bracket 103 straddling above the welding platform 102, a first driving mechanism 104 for driving the welding moving bracket 103 to move along the X-axis, a second driving mechanism 105 installed on the welding moving bracket 103, and a welding gun 106 driven by the second driving mechanism 105 to move along the Y-axis. The welding gun 106 is controlled by a servo system and can achieve high-precision welding path tracking. This is the welding part of the welding device. A buffer structure 400 is provided between the positioning box body 301 and the limiting plate 302. The buffer structure 400 has a total cavity 400a inside, and an elastically deformable support member 401 is provided in the total cavity 400a;

[0046] A screw 304 is also provided between the limiting plate 302 and the positioning box body 301. By screwing the screw 304, the limiting plate 302 is driven to move relative to the positioning box body 301 to adjust the size of the total cavity 400a of the buffer structure 400 and cause the support member 401 to deform.

[0047] A number of equally spaced support members 401 are provided in the buffer structure 400. The total cavity 400a is divided into a first cavity 400a-1, a second cavity 400a-2, and a third cavity 400a-3 between adjacent support members 401. Micropores 401a are provided on the support member 401 to connect the second cavity 400a-2 and the third cavity 400a-3 of adjacent support members 401. The support member 401 has two top ends 401-3 and a bottom end 401-4. Between the two top ends 401-3 is the bent end 401-2 of the support member 401. Between the top end 401-3 and the bottom end 401-4 is the side end 401-1 of the support member 401. The micropores 401a are provided on the side end 401-1;

[0048] Specifically, the welding component 100

[0049] includes a workbench 101 and a welding platform 102 fixed thereon;

[0050] The welding moving bracket 103 straddles above the welding platform 102 and is driven by the first driving mechanism 104 to move along the X-axis;

[0051] The second driving mechanism 105 is installed on the welding moving support 103 to drive the welding gun 106 to move along the Y-axis;

[0052] The welding gun 106 is controlled by a servo system to achieve high-precision welding path tracking. The following is a common configuration of this automatic welding device; 1. Mechanical structure selection and matching

[0053] (1) Workbench 101 and welding platform 102

[0054] Workbench: Select a heavy-duty welding workbench (such as MISUMI FA series or Shanglong automation platform) to ensure rigidity and stability. The size is determined according to the welding workpiece (such as 1200×800mm).

[0055] Welding platform: Use a high-temperature resistant steel plate (such as Q235A with chrome plating on the surface) fixed on the workbench, with T-slots for convenient fixture installation.

[0056] (2) Welding moving support 103

[0057] X-axis crossbeam: Select a high-precision linear module (such as HIWIN EGR series or THK SR series), and the span needs to cover the width of the welding platform (for example, 1000mm stroke).

[0058] Y-axis slide: Installed on the X-axis module, select a compact linear slide (such as HIWIN KK module), and the load needs to match the weight of the welding gun (about 5-10kg).

[0059] (3) Driving mechanism (104 / 105)

[0060] X-axis drive (104): Servo motor (such as Panasonic MINAS A6 series 400W) + planetary reducer (speed ratio 10:1) + ball screw (diameter 20mm, lead 5mm).

[0061] Y-axis drive (105): Servo motor (200W) + synchronous belt drive (or small ball screw) to meet the requirements of fast response.

[0062] Guide rail: Linear guide rail matching the module (such as HIWIN HGR15), with a repeat positioning accuracy of ±0.02mm.

[0063] (4) Welding gun (106)

[0064] Welding gun model: Selected according to the process (such as TIG welding gun (WP-17) or MIG welding gun (Binzel MB36)), with a water cooling system (if long-term welding is required).

[0065] Servo control: Adjust the height and angle of the welding torch through a servo motor (such as Yaskawa Σ-7 series), and achieve constant pressure tracking with a force sensor.

[0066] 2. Control System Integration

[0067] (1) Motion Control

[0068] Controller: Use a PLC (such as Mitsubishi FX5U) or a dedicated motion control card (such as Googol GTS series), and program to achieve X / Y axis interpolation motion.

[0069] Servo drive: Match the motor model (such as Panasonic A6 driver), and set the electronic gear ratio and acceleration / deceleration curve.

[0070] (2) Welding Parameter Management

[0071] Welding power source: Select a digital welding machine (such as Fronius TPS series), which supports communication with the PLC (Modbus TCP / IP or EtherCAT).

[0072] IO interface: Control the start / stop of the welding machine, gas valve, and wire feeder (during MIG welding) through the PLC.

[0073] (3) Path Tracking

[0074] High-precision sensing: Install a laser displacement sensor (such as KEYENCE IL series) to compensate for workpiece deformation error in real time.

[0075] Programming software: Use CAM software (such as Robotmaster) to generate the welding path and export the G code to the controller.

[0076] 3. System Linkage Process

[0077] Initialization:

[0078] Each axis returns to zero, and the welding torch resets to the safe position.

[0079] Clamp the workpiece:

[0080] Locate the metal plate through a fixture (such as a pneumatic gripper) or manually.

[0081] Welding execution:

[0082] The PLC sends instructions, the X / Y axes move along the preset path, and the welding torch servo system synchronously adjusts the height / angle.

[0083] Monitoring and feedback:

[0084] The force sensor and laser sensor adjust the parameters in real time to ensure the weld quality.

[0085] The clamping assembly 200 (for reference to this fixture Figures 1 - 3 )

[0086] is arranged on the welding assembly 100 and includes a support block 201, a screw sleeve 202 and a screw rod 203;

[0087] The screw rod 203 is threadedly connected to the screw sleeve 202, and one end thereof is rotatably connected to the outer surface of the positioning box body 301;

[0088] By rotating the knob at the top of the screw rod 203, the limiting plate 302 in the positioning box body 301 is driven to clamp the metal plate.

[0089] II. Buffer system

[0090] The buffer assembly 300

[0091] is movably arranged on the clamping assembly 200 and includes a positioning box body 301 and a limiting plate 302;

[0092] A buffer structure 400 is arranged between the two, which has a total cavity 400a inside and an elastically deformable support 401 is built-in.

[0093] Buffer adjustment mechanism

[0094] The limiting plate 302 is connected to the positioning box body 301 by a screw 304. By screwing the screw 304, the limiting plate 302 can be driven to move, adjusting the size of the total cavity 400a and deforming the support 401. This is for adapting to the stress of different metals during thermal expansion and contraction (for example, the thermal expansion coefficients of stainless steel and aluminum alloy materials are different). At the same time, the support 401 is appropriately extruded so that it and the buffer structure 400 act as a pure gasket to ensure the fixation of the metal plate when positioning the metal plate. For example, when the bent end 401-2 of the support 401 contacts the inside of the buffer structure 400, a single support 401 has a total of three support ends, namely the side end 401-1 and the bent end 401-2, making the hardness of the entire buffer structure 400 equivalent to that of a pure gasket. On this basis, further compressing the buffer structure 400 can compress it to an appropriate degree according to the metal plate material. Specifically, the thread of the screw 304 and the positioning box body 301 can be refined, and a scale can be added to the screw 304 to control the compression degree of the buffer structure 400;

[0095] The supports 401 are arranged at equal intervals. When designing, the shape and quantity of the supports 401 can be set according to the actual situation, such as Figure 5The middle support 401 is in an M shape. However, in order to keep the structure capable of fixing the metal block in position (that is, its performance is closer to that of a pure gasket, and the shape of the support 401 can be further changed), the total cavity 400a is divided into the first, second, and third cavities (400a-1 / 2 / 3). The first cavity 400a-1 is closed, which plays a role in maintaining pressure and also prevents the buffer structure 400 from undergoing plastic deformation due to extrusion. When the bent end 401-2 of the buffer structure 400 contacts the buffer structure 400, it can further close the second cavity 400a-2 and the third cavity 400a-3 to ensure the pressure-maintaining effect.

[0096] Structural features of the support 401:

[0097] It includes two top ends 401-3 and a bottom end 401-4, which are connected by a side end 401-1 in between;

[0098] A bent end 401-2 is formed between the top ends 401-3;

[0099] Micropores 401a are opened on the side end 401-1 to connect adjacent cavities (such as the second and third cavities). When the buffer structure 400 passes through the micropores 401a opened on the side end 401-1, it can buffer the extremely small displacement during the thermal expansion of the metal plate during welding. After the metal plate welding is completed, only through the complete contact of the bent end 401-2 of the buffer structure 400 with the inner wall of the buffer structure 400 can the further deformation of the metal plate be offset, thus ensuring the fixation of the metal plate before welding, buffering during welding, and fixation of the metal plate in the initial stage after welding throughout the welding process;

[0100] Experimental design

[0101] Test object

[0102] Experimental group: Support 401 (M-shaped structure) + Buffer structure 400 (multi-cavity + regulating valve 500)

[0103] Control group 1: Traditional helical spring (60Si2MnA steel, hardness HRC45-50)

[0104] Control group 2: Polyurethane gasket (Shore hardness 90A, thickness 10mm)

[0105] Test conditions

[0106] Load cycle: Simulate the welding clamping - release process (frequency 0.5Hz, load range: for aluminum alloy 0.3 - 0.8MPa, for steel plate 0.6 - 1.2MPa).

[0107] Temperature shock: Room temperature (25°C) → Welding high temperature (for aluminum alloy 600°C, for steel plate 1200°C) → Cooling, cycle 1000 times.

[0108] Displacement: Aluminum alloy ±5 mm, steel plate ±3 mm (calculated based on the coefficient of thermal expansion);

[0109]

[0110] Detailed Explanation of Key Experimental Parameters

[0111] Supporting member 401 + Buffer structure 400

[0112] Pressure relief rate of micropores 401a:

[0113] Aluminum alloy: 0.1 L / min (hole diameter 1.0 mm, low-viscosity medium).

[0114] Steel plate: 0.05 L / min (hole diameter 0.5 mm, high-viscosity oil).

[0115] Opening of regulating valve 500:

[0116] Rigid mode: The mating hole 500b is misaligned with the opening 402b by 90°.

[0117] Flexible mode: Opening 30° (aluminum alloy) / 15° (steel plate).

[0118] Fatigue failure mode:

[0119] The bent end 401-2 of the supporting member 401 has slight wear (wear depth <0.1 mm after 50,000 times).

[0120] The folds 400b of the buffer structure 400 have no tears.

[0121] Traditional spring

[0122] Failure mode:

[0123] Microscopic cracks appear after 10,000 times (the fatigue limit of 60Si2MnA steel is insufficient).

[0124] The elastic modulus decreases at high temperatures, resulting in a clamping force fluctuation of ±20%.

[0125] Polyurethane gasket

[0126] Failure mode:

[0127] The thickness decreases by 10% - 15% after 5,000 times (compressive permanent deformation).

[0128] Surface cracking occurs at high temperatures, and the buffering performance is completely lost.

[0129] Comparison of fatigue performance curves

[0130] Supporting member 400: The fatigue life shows a linear and slow decay (the stiffness remains 95% after 50,000 times).

[0131] Spring: The attenuation is fast in the first 5,000 times, and then it enters the accelerated fatigue stage.

[0132] Polyurethane gasket: The initial attenuation is extremely fast, and the performance drops precipitously after 3,000 times.

[0133] Conclusion; The support member 401 and the buffer structure 400 are significantly superior to the traditional scheme through the multi-chamber pressure sharing and material integration design:

[0134] The service life is increased by more than 3 times, and the deformation recovery rate is close to 100% (anti-fatigue property).

[0135] It can withstand high temperature of 600 °C in the short term without performance mutation (thermal stability).

[0136] It is worth mentioning that the buffer structure 400 and the support member 401 are of an integrated structure. The buffer structure 400 can be adapted according to the existing clamping assembly 200 (such as setting the clamping assembly 200 at the end of a mechanical gripper. The shape can be made circular or other shapes. The support member 401 is constructed by hollowing out the shapes of the first cavity 400a-1, the second cavity 400a-2, and the third cavity 400a-3 and then sealed. The process is simple. The sealing means can be through heat capacity, etc.). Its production cost and manufacturing difficulty are greatly reduced, and almost no modification is required for the entire welding device, which conforms to the logical relationship of actual production and manufacturing;

[0137] II. The combination degree of the buffer structures of traditional shrapnel and springs with the traditional fixture (clamping assembly 200) is difficult, and at the same time, they need to be used one by one with a narrow range of applications, and they occupy a large proportion of the welding device, which does not conform to the logical relationship of actual production and manufacturing;

[0138] III. The support member 401 inside the buffer structure 400 not only exists Figure 4 in the shown arrangement, but can also be a structure of a single multi-layer support member 401, or the side end 401-1 and the bent end 401-2 of a thicker support member 401. It can be flexibly modified and the process is simple. It is only necessary to change the shapes and sizes of the first cavity 400a-1, the second cavity 400a-2, and the third cavity 400a-3, which once again reflects the simple and controllable characteristics of its process;

[0139] IV. The outer surface of the buffer structure 400 is provided with wrinkles 400b, which mainly improve the recovery ability and anti-deformation ability of the buffer structure 400.

[0140] Example 2

[0141] Refer to Figures 3 to 7, which is the second embodiment of the present invention. The difference between this embodiment and Embodiment 1 is that a conduit 402 is provided on the outer surface of the buffer structure 400 and is connected to the second cavity 400a-2 and the third cavity 400a-3. A regulating valve 500 is provided at the end of the conduit 402. An opening 402b is provided on the outer circumference of the end of the conduit 402, and a shaft protrusion 402c is provided at its central position. An outer ring protrusion 402a is provided on the outer surface of the conduit 402, and a sealing ring 402a-1 is sleeved on the outer surface of the outer ring protrusion 402a. The conduit 402 cooperates with the regulating valve 500. The adapted recess 500a inside the regulating valve 500 is hermetically sleeved with the outer ring protrusion 402a of the conduit 402 through the sealing ring 402a-1, and the shaft recess 500c of the regulating valve 500 cooperates with the shaft protrusion 402c of the conduit 402 so that the regulating valve 500 can be rotatably arranged on the conduit 402. An adapted hole 500b is provided on the regulating valve 500. By rotating the regulating valve 500, the adapted hole 500b intersects with the opening 402b of the conduit 402. A plug 501 is provided on the regulating valve 500 through caulking 503, and the colloid 502 of the plug 501 cooperates with the opening 500e of the regulating valve 500.

[0142] Specifically, by opening the conduit 402, the total cavity 400a of the buffer structure 400 is connected to the outside. By providing a regulating valve 500 outside the conduit, the rigidity strength of the buffer structure 400 is changed. For example, when the regulating valve 500 rotates until the adapted hole 500b is misaligned with the opening 402b, each cavity is independently closed, and the support member 401 is in the maximum rigidity state. Subsequently, as the adapted hole 500b and the opening 402b are gradually staggered, its rigidity gradually decreases (the rigidity state can be adjusted by setting a scale on the regulating valve 500). Providing a plug 501 on the regulating valve 500 is to keep the buffer structure 400 in the maximum rigidity during the thermal expansion of the welding of the metal plate. After the welding, when the temperature is the highest and the stress of the metal plate is the greatest, the displacement of the metal plate breaks through the plug 501, and the pressure is relieved through the gap between the adapted hole 500b and the opening 402b, presenting a non-linear state during the thermal expansion displacement of the metal plate during welding. This process improves the traditional buffering method, is beneficial to improving the uniform displacement of the metal plate during welding, and thus improves the yield and accuracy of the metal plate welding process;

[0143] In another embodiment compared with Embodiment 1, a medium with a higher density such as pressure relief oil can be flushed through the conduit 402, and the regulating valve 500 can be sealed by the plug 501. By setting the positions of the adaptation hole 500b and the opening 402b close to the buffer structure 400, when pressure is relieved, the buffer structure 400 is compressed, and the medium oil flows through the staggered gap between the adaptation hole 500b and the opening 402b. The non-linear buffering effect is achieved through the sealing form, and the misalignment of the adaptation hole 500b and the opening 402b causes the regulating valve 500 to rotate until the adaptation hole 500b and the opening 402b are misaligned. Each cavity is independently closed, and the buffer structure 400 is in the maximum rigid state, and this method can effectively prevent the plastic deformation of the buffer structure 400;

[0144] It is worth mentioning in combination with Embodiments 1 and 2 that; the distance of displacement of the metal plate welding is usually small, which is affected by factors such as the thickness of the material plate. Its range is between 1-10 mm. Therefore, the buffer structure 400 can be designed with a thickness of more than 10 mm to reduce the volumes of the first cavity 400a-1, the second cavity 400a-2, and the third cavity 400a-3. From the structure, a pure gasket is used to fix the metal plate during welding, and the rigidity requirement of the buffer structure 400 is improved by means of the external conduit 402 and sealing the conduit 402 through the plug 501;

[0145] When pressure relief is required, 1. Micro-holes 401a are opened in the support member 401 inside the buffer structure 400 to allow the medium between the second cavities 400a-2 to flow through to achieve buffering. 2. The reaction force of buffering is further reduced through the conduit 402 and the misalignment of the adaptation hole 500b and the opening 402b, and the uniform buffering effect is offset by the way of medium discharge to improve the welding quality of the metal plate. 3. By adding a plug 501 to the regulating valve 500 to seal the buffer structure 400, the rigidity of the buffer structure 400 is fully maintained before the metal plate is depressurized to ensure the fixed support of the buffer structure 400 for the metal plate, and the plug 501 is discharged after the pressure relief value approaches the critical value. 4. Before sealing the plug 501, a medium oil with a higher density is injected into the buffer structure 400 and the conduit, and the buffering is achieved by the way of the medium oil flowing in the second cavity 400a-2 and the third cavity 400a-3.

[0146] In this embodiment, the switching between the rigid and flexible support of the buffer structure 400 for the metal plate can be realized, especially the automatic form switching according to the thermal expansion displacement of the metal plate during the welding process, and the switching of the rigid and flexible support of the buffer structure 400 for the metal plate is changed manually.

[0147] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application (e.g., changes in the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any clause of "means plus function" is intended to cover the structures that perform the recited function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to specific embodiments but extends to various modifications that still fall within the scope of the appended claims.

[0148] In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present invention or those features that are not relevant to implementing the present invention).

[0149] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An automatic processing and welding device for metal plates, comprising a welding assembly (100) and a clamping assembly (200) provided on the welding assembly (100), characterized in that: A movable buffer assembly (300) is provided on the clamping assembly (200). The buffer assembly (300) includes a positioning box body (301) and a limiting plate (302) slidably disposed on the positioning box body (301). The limiting plate (302) is used to abut against the surface of the metal plate. A buffer structure (400) is provided between the positioning box body (301) and the limiting plate (302). A screw (304) is further provided between the limiting plate (302) and the positioning box body (301). By screwing the screw (304), the limiting plate (302) is driven to move relative to the positioning box body (301) to adjust the size of the total cavity (400a) of the buffer structure (400) and cause the support member (401) to deform.

2. The automatic processing and welding device for metal plates according to claim 1, characterized in that: The buffer structure (400) has a total cavity (400a) inside, and an elastically deformable support member (401) is provided in the total cavity (400a). The buffer structure 400 and the support member 401 are of an integral structure. A plurality of equally spaced support members (401) are provided in the buffer structure (400). The total cavity (400a) is divided into a first cavity (400a-1), a second cavity (400a-2) and a third cavity (400a-3) between adjacent support members (401).

3. The automatic processing and welding device for metal plates according to claim 2, wherein: Micropores (401a) are provided on the support member (401) to communicate the second cavity (400a-2) and the third cavity (400a-3) of adjacent support members (401).

4. The automatic processing and welding device for metal plates according to claim 3, characterized in that: The support member (401) has two top ends (401-3) and a bottom end (401-4). Between the two top ends (401-3) is the bent end (401-2) of the support member (401), and between the top end (401-3) and the bottom end (401-4) is the side end (401-1) of the support member (401). The micropores (401a) are provided on the side end (401-1).

5. The automatic processing and welding device for metal plates according to claim 2, characterized in that: The outer surface of the buffer structure (400) is provided with wrinkles (400b).

6. The automatic processing and welding device for metal plates according to claim 2, characterized in that: A conduit (402) is provided on the outer surface of the buffer structure (400) and is communicated with the second cavity (400a-2) and the third cavity (400a-3), and a regulating valve (500) is provided at the end of the conduit (402).

7. The automated processing and welding device for metal plates according to claim 6, wherein: An opening (402b) is provided on the outer ring of the end of the conduit (402), and a shaft convex (402c) is provided at its central position. An outer ring protrusion (402a) is provided on the outer surface of the conduit (402), and a sealing ring (402a-1) is sleeved on the outer surface of the outer ring protrusion (402a).

8. The automatic processing and welding device for metal plates according to claim 7, characterized in that: The conduit (402) is matched with the regulating valve (500). The fitting recess (500a) inside the regulating valve (500) is hermetically sleeved with the outer ring protrusion (402a) of the conduit (402) through the sealing ring (402a-1), and the shaft recess (500c) of the regulating valve (500) is matched with the shaft convex (402c) of the conduit (402) so that the regulating valve (500) can be rotatably disposed on the conduit (402).

9. The automatic processing and welding device for metal plates according to claim 8, wherein: The regulating valve (500) is provided with an adapter hole (500b), and the regulating valve (500) is rotated to make the adapter hole (500b) intersect with the opening (402b) of the conduit (402).

10. The automated processing and welding device for metal plates according to claim 9, wherein: The regulating valve (500) is provided with a plug (501) through caulking glue (503), and the glue body (502) of the plug (501) is matched with the opening (500e) of the regulating valve (500).

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