A welding apparatus for a boiler premix combustion head combustion cloth and a method of using the same

Abstract

The present application relates to the field of welding equipment, specifically to a kind of boiler premix combustion head combustion cloth welding equipment and its use method, including base, lathe bed, double-row crossbeam and welding head, lathe bed is fixedly installed on base, guide rail is installed on the both sides of base, double-row crossbeam is slidably installed on the both ends of guide rail, double-row crossbeam includes lower crossbeam, upper crossbeam and support, support is located at the both ends of upper crossbeam and lower crossbeam, and lower crossbeam is installed at the bottom of support, the accurate movement of welding head in X, Y, Z three directions is realized by servo motor driving screw thread screw rod, transmission gear and rack cooperation and lifting motor driving lifting screw rod. Stop once every interval, by servo motor counting control, the high accuracy of welding interval is ensured, workpiece fixing device is used to firmly clamp the workpiece to be welded on lathe bed, avoids the possible shaking or displacement in welding process, guarantees the welding quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding equipment, in particular to a welding equipment for a boiler premix combustion head combustion cloth and a using method thereof. BACKGROUND

[0002] The boiler premix combustion head combustion cloth is a woven metal nickel mesh, which needs to be welded to a circular arc stainless steel hole plate. The traditional welding method relies on manual holding of the workpiece and uses a manual resistance welding device for welding. In the welding process, a large current is used to melt the two materials instantaneously to achieve a mutual solubility state, thereby achieving a firm weld. The welding points are usually circular, and the welding point spacing is set to 30x30mm.

[0003] However, the existing manual welding equipment has many shortcomings:

[0004] Manual marking is tedious: Before welding, workers need to mark points on the nickel mesh with a marker pen to ensure the accuracy of the welding spacing. This process is not only time-consuming and labor-intensive, but also prone to errors such as missing points, uneven spacing, and unclear marking. For a nickel mesh with a diameter of 1200mm, the marking process may take up to an hour, which is inefficient and difficult to ensure accuracy.

[0005] Large safety hazards: Since the welded nickel mesh needs to be tightly covered on the circular arc stainless steel plate, the worker needs to tighten the nickel mesh while welding. This operation method not only exposes the worker to the welding head below, which has a large safety hazard, but also makes it difficult to control the tightening force, which can only be done by manual experience, further increasing the operation difficulty and risk.

[0006] Welding accuracy is affected by human factors: manual marking has a large error, and in the welding process, the worker needs to rely on the eyes to observe the marking for welding, which will cause the accumulation of secondary errors, resulting in uneven welding point spacing. In addition, manual operation requires the use of hands and feet, and requires a high degree of concentration, which is prone to safety accidents, and the training of skilled operators requires a long time. SUMMARY

[0007] (I) Technical problems solved

[0008] In view of the shortcomings of the prior art, the present application provides a welding equipment for a boiler premix combustion head combustion cloth and a using method thereof.

[0009] (II) Technical solutions

[0010] In order to achieve the above object, the present application provides the following technical scheme: a welding equipment for a boiler premix combustion head combustion cloth, comprising a base, a bed body, a double-row cross beam and a welding machine head, the bed body is fixedly installed on the base, guide rails are installed on both sides of the base, the double-row cross beam is slidably installed on the guide rails, the double-row cross beam comprises a lower cross beam, an upper cross beam and a support, the support is located at both ends of the upper cross beam and the lower cross beam, the lower cross beam is installed at the bottom of the support, the upper cross beam is installed at the top of the support, the bed body is located between the upper cross beam and the lower cross beam, a sliding rail, a threaded screw rod and a servo motor are installed on the upper cross beam and the lower cross beam, the servo motor is fixedly installed at the end of the upper cross beam and the lower cross beam, the threaded screw rod is rotatably installed on the upper cross beam and the lower cross beam, and the threaded screw rod is connected with the output end of the servo motor, a lifting frame is slidably installed on the upper cross beam and the lower cross beam through the sliding rail, the welding machine head is slidably installed on the lifting frame of the upper cross beam and the lower cross beam, a workpiece fixing device is arranged on the bed body, and the workpiece fixing device is used for clamping a workpiece to be welded.

[0011] Preferably, the workpiece fixing device comprises a support seat, a steel ring support, a lifting cylinder, a metal ring, a steel rope support and a steel wire rope, a plurality of support seats are arranged on the bed body in a surrounding manner, the steel ring support is fixedly installed on the support seat, the lifting cylinder is installed on the bed body in a surrounding manner, a lifting frame is installed at the output end of the lifting cylinder, the bottom of the lifting frame is connected with the metal ring, a plurality of steel rope supports are installed on the metal ring in a surrounding manner, and one end of the steel wire rope is fixedly installed on the steel rope support.

[0012] Further preferably, a transmission rack is installed on the guide rail, a transmission motor is installed at both ends of the lower cross beam, a transmission gear is installed at the output end of the transmission motor, and the transmission gear is engaged with the transmission rack.

[0013] Still more preferably, a track is arranged on the front side of the lifting frame, a lifting motor is fixedly installed at the top of the lifting frame, a lifting screw rod is installed at the output end of the lifting motor, and the lifting screw rod is rotatably installed on the lifting frame, and the welding machine head is slidably connected with the track through a sliding block.

[0014] Preferably, the welding machine head comprises a cylinder, a machine frame, a rod frame, a guide rod, a welding head, a welding frame and a clamp frame, the cylinder is fixedly installed at the top of the machine frame, the output end of the cylinder penetrates through the machine frame, the clamp frame is fixedly installed at the output end of the cylinder, the welding head is installed at the front end of the clamp frame, the bottom end of the welding head penetrates through the welding frame, the rod frame is located at both sides of the machine frame, the guide rod penetrates through the rod frame, the bottom end of the guide rod is connected with the welding frame, an inductive switch is fixedly installed on the rod frame, an isolation ring is sleeved on the top end of the guide rod, the isolation ring is matched with the inductive switch, a spring is sleeved on the guide rod, and the spring is located between the rod frame and the welding frame.

[0015] Further preferably, the inductive switch is fixedly installed on the rod frame through an adjusting frame, the adjusting frame is of an L-shaped structure, and the adjusting frame is provided with an adjusting opening, and two limiting nuts are symmetrically sleeved on the inductive switch through a threaded structure, and the two limiting nuts clamp the adjusting frame.

[0016] Still preferably, the rack and the rod frame are provided with mounting frames, the mounting frames are provided with adjusting frames through bolts, the adjusting frames are slidably connected with rails through sliding blocks, and rear ends of the adjusting frames are sleeved on the lifting lead screws.

[0017] Preferably, the welding power supply and the operation table are further included, the welding power supply is fixedly installed at the rear side of the upper cross beam and the lower cross beam, and the welding power supply is electrically connected with the welding heads, and the operation table is used for operating various electrical elements.

[0018] Further preferably, the application relates to a method for using a boiler premix combustion head cloth welding device.

[0019] S1, preparation: ensure that the base, the lathe bed, the double-row cross beam and the welding head are stably installed, and check whether the electrical system is normally connected;

[0020] S2, workpiece fixing:

[0021] a. placing the arc-shaped stainless steel hole plate and the nickel mesh to be welded on the steel ring frame on the lathe bed;

[0022] b. installing a clamp for traction on the front end of the steel wire rope to clamp the nickel mesh, and tightening the steel wire rope to make the nickel mesh uniformly tight;

[0023] c. under the action of the lifting air cylinder, moving the metal ring with the steel wire rope downwards to make the nickel mesh tightly bind on the arc-shaped stainless steel hole plate;

[0024] S3, starting the welding program:

[0025] a. according to the specific requirements of the workpiece to be welded, selecting the corresponding welding program on the operation table;

[0026] b. pressing the start button to start the welding process;

[0027] S4, welding process:

[0028] a. the upper and lower two symmetrical welding heads are driven by the transmission motor to drive the transmission gears to move along the transmission rack on the guide rail in the Y-axis direction;

[0029] b. the upper and lower two symmetrical welding heads are driven by the servo motor to rotate the threaded lead screw, so that the welding heads move along the X-axis direction on the upper cross beam and the lower cross beam;

[0030] c. The upper and lower symmetric welding heads are driven by a lifting motor to rotate the lifting screw rod, causing the welding heads to move along the Z-axis direction on the lifting frame;

[0031] d. Welding starts from the middle dot and gradually moves outward in a "return" - shaped welding path circle by circle until all welding points are completed;

[0032] e. Stop once for each spacing walked, which is controlled by the counting of the lifting motor to ensure the accuracy of the welding spacing;

[0033] f. When welding, the spring set at the welding head needs to be pressed down before welding can be carried out. After the welding head is lifted, the spring will continue to press on the mesh for a period of time to prevent the welding head from sticking to the workpiece;

[0034] S5. Completing welding:

[0035] a. After welding is completed, the double - row crossbeam automatically retracts to the initial position;

[0036] b. The operator can safely remove the workpiece that has completed welding and prepare for the welding work of the next workpiece.

[0037] (III) Beneficial effects

[0038] Compared with the prior art, the present invention provides a welding device for a combustion cloth of a boiler premixed combustion head and its usage method, having the following beneficial effects:

[0039] High - precision welding

[0040] Three - axis linkage control: By driving the threaded screw rod by a servo motor, the cooperation of the transmission gear and the rack, and driving the lifting screw rod by a lifting motor, precise movement of the welding head in the X, Y, and Z directions is achieved. Stop once for each spacing walked, which is controlled by the counting of the servo motor to ensure the high accuracy of the welding spacing.

[0041] Stable clamping system: The workpiece fixing device (including the support base, steel ring frame, lifting cylinder, metal ring, steel wire rope frame and steel wire rope) is used to firmly clamp the workpiece to be welded on the bed, avoiding possible jitter or displacement during the welding process and ensuring the welding quality.

[0042] Enhanced safety and reliability

[0043] Inductive switch fine - tuning: The L - shaped adjusting frame allows the position of the inductive switch to be fine - tuned according to actual needs, ensuring welding accuracy while also improving the adaptability and reliability of the system.

[0044] Spring buffering mechanism: the spring needs to be pressed down before welding, and the spring will continue to press on the net for a period of time after the welding head is lifted, preventing the welding head from sticking to the workpiece, thereby ensuring the stability of the welding process.

[0045] Wide applicability

[0046] Support for multiple specifications: the device is suitable for different sizes of workpieces, and only the tool for placing the workpiece needs to be replaced, without the need for major changes to the device itself, greatly improving the flexibility and application range of the device.

[0047] Special material processing: especially suitable for welding of arc-shaped stainless steel hole plates and nickel mesh and other materials, meeting the special needs of specific industries.

[0048] Optimized space utilization and line loss reduction

[0049] Compact design: the complete system integrates multiple functional modules such as the base, bed body, double-row cross beam, and welding head, but the overall layout is compact and reasonable, saving workshop space and facilitating integration into existing production lines.

[0050] Welding power supply follow-up: the welding power supply is carried on the double-row cross beam and moves with the cross beam, reducing the distance of copper wires and copper rows, reducing line loss, and further improving welding efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 The figure is a schematic diagram of the complete structure of the invention;

[0052] Figure 2 The figure is an enlarged structural schematic diagram of the lifting frame of the invention;

[0053] Figure 3 The figure is a structural schematic diagram of the assembly of the transmission motor and the transmission rack of the invention;

[0054] Figure 4 The figure is an enlarged structural schematic diagram of the workpiece fixing device of the invention.

[0055] Figure 5 The figure is a structural schematic diagram of the welding head of the invention.

[0056] In the figure: 1, base; 2, welding head; 3, bed; 4, operating table; 5, double-row cross beam; 6, welding power supply; 7, upper cross beam; 8, lower cross beam; 9, transmission motor; 10, servo motor; 11, threaded screw rod; 12, sliding rail; 13, guide rail; 14, support; 15, lifting frame; 16, track; 17, lifting motor; 18, adjusting frame; 19, transmission rack; 20, transmission gear; 21, lifting cylinder; 22, metal ring; 23, lifting frame; 24, steel rope frame; 25, steel wire rope; 26, support seat; 27, steel ring frame; 28, cylinder; 29, rack; 30, guide rod; 31, rod frame; 32, clamp frame; 33, welding head; 34, welding frame; 35, spring; 36, isolation ring; 37, inductive switch; 38, mounting frame. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0058] Please refer to Figures 1-5 The present application is a kind of welding equipment for boiler premix combustion head combustion cloth, including base 1, bed 3, double-row cross beam 5 and welding head 2, the bed 3 is fixedly installed on the base 1, the both sides of the base 1 are provided with guide rail 13, the both ends of the double-row cross beam 5 are slidably installed on the guide rail 13, the double-row cross beam 5 includes lower cross beam 8, upper cross beam 7 and support 14, the support 14 is located at the both ends of the upper cross beam 7 and the lower cross beam 8, and the lower cross beam 8 is installed at the bottom of the support 14, the upper cross beam 7 is installed at the top of the support 14, the bed 3 is located between the upper cross beam 7 and the lower cross beam 8, the upper cross beam 7 and the lower cross beam 8 are provided with sliding rail 12, threaded screw rod 11 and servo motor 10, the servo motor 10 is fixedly installed at the end of the upper cross beam 7 and the lower cross beam 8, the threaded screw rod 11 is rotatably installed on the upper cross beam 7 and the lower cross beam 8, and the threaded screw rod 11 is connected with the output end of the servo motor 10, the upper cross beam 7 and the lower cross beam 8 are slidably installed with lifting frame 15 through the sliding rail 12, the welding head 2 is slidably installed on the lifting frame 15 of the upper cross beam 7 and the lower cross beam 8, the bed 3 is provided with workpiece fixing device, and the workpiece fixing device is used for clamping the workpiece to be welded.

[0059] Preferably, the workpiece fixing device comprises a support seat 26, a steel ring frame 27, a lifting cylinder 21, a metal ring 22, a steel rope frame 24 and a steel wire rope 25, a plurality of support seats 26 are arranged around the lathe bed 3, the steel ring frame 27 is fixedly installed on the support seat 26, the lifting cylinder 21 is installed around the lathe bed 3, the output end of the lifting cylinder 21 is provided with a lifting frame 23, the bottom of the lifting frame 23 is connected with the metal ring 22, a plurality of steel rope frames 24 are installed around the metal ring 22, and one end of the steel wire rope 25 is fixedly installed on the steel rope frame 24.

[0060] Further preferably, the guide rail 13 is provided with a transmission rack 19, the two ends of the lower cross beam 8 are provided with a transmission motor 9, the output end of the transmission motor 9 is provided with a transmission gear 20, and the transmission gear 20 is engaged with the transmission rack 19.

[0061] Still more preferably, the front side of the lifting frame 15 is provided with a track 16, the top of the lifting frame 15 is fixedly provided with a lifting motor 17, the output end of the lifting motor 17 is provided with a lifting lead screw, the lifting lead screw is rotatably installed on the lifting frame 15, and the welding head 2 is slidably connected with the track 16 through a sliding block.

[0062] Preferably, the welding head 2 comprises a cylinder 28, a frame 29, a rod frame 31, a guide rod 30, a welding head 33, a welding frame 34 and a clamp frame 32, the cylinder 28 is fixedly installed on the top of the frame 29, the output end of the cylinder 28 penetrates through the frame 29, the clamp frame 32 is fixedly installed on the output end of the cylinder 28, the welding head 33 is installed at the front end of the clamp frame 32, the bottom end of the welding head 33 penetrates through the welding frame 34, the rod frame 31 is located on both sides of the frame 29, the guide rod 30 penetrates through the rod frame 31, the bottom end of the guide rod 30 is connected with the welding frame 34, the rod frame 31 is fixedly provided with an induction switch 37, the guide rod 30 is sleeved with an isolation ring 36, the isolation ring 36 is matched with the induction switch 37, the guide rod 30 is sleeved with a spring 35, and the spring 35 is located between the rod frame 31 and the welding frame 34.

[0063] Further preferably, the induction switch 37 is fixedly installed on the rod frame 31 through an adjusting frame 18, the adjusting frame 18 is of an L-shaped structure, and the adjusting frame 18 is provided with an adjusting opening, two limiting nuts are symmetrically sleeved on the induction switch 37 through a threaded structure, and the two limiting nuts clamp the adjusting frame 18.

[0064] Still more preferably, the frame 29 and the rod frame 31 are provided with a mounting frame 38, the adjusting frame 18 is installed on the mounting frame 38 through bolts, the adjusting frame 18 is slidably connected with the track 16 through a sliding block, and the rear end of the adjusting frame 18 is sleeved on the lifting lead screw.

[0065] Preferably, the welding power source 6 is fixedly installed at the rear side of the upper cross beam 7 and the lower cross beam 8, and is electrically connected with the welding head 2, and the operation platform 4 is used for operating various electrical components.

[0066] The operation platform 4 in the technical solution can adopt a conventional numerical control operation device in the numerical control field.

[0067] The inductive switch 37 in the technical solution can adopt a cylindrical inductive switch 37 with mature application technology in the inductive device field.

[0068] The welding equipment for the boiler premix combustion head combustion cloth is a highly automated welding system, which is specially used for welding arc-shaped stainless steel hole plates and nickel nets and the like. Through the cooperation of the base 1, the bed body 3, the double-row cross beam 5 and the welding head 2, accurate positioning, fixing and efficient welding of the workpiece are realized.

[0069] The base 1 and the guide rail 13: the base 1 provides support for the entire system, and the guide rail 13 is installed on both sides of the base 1 to ensure that the double-row cross beam 5 can slide smoothly.

[0070] The double-row cross beam 5: composed of the upper cross beam 7 and the lower cross beam 8 and the support 14, and slidably installed at both ends of the guide rail 13, providing a moving platform for the welding head 2.

[0071] The servo motor 10 and the threaded screw rod 11: the servo motor 10 installed on the upper and lower cross beams 8 drives the threaded screw rod 11 to rotate, so that the lifting frame 15 can move accurately along the X-axis direction (i.e. along the cross beam).

[0072] The transmission rack 19 and the gear: the transmission rack 19 is installed on the guide rail 13, and the transmission motor 9 and the transmission gear 20 are installed at both ends of the lower cross beam 8, realizing the movement of the double-row cross beam 5 along the Y-axis direction.

[0073] The lifting motor 17 and the lifting screw rod: the lifting motor 17 installed at the top of the lifting frame 15 drives the lifting screw rod to rotate, so that the welding head 2 can be adjusted in the Z-axis direction (vertical direction).

[0074] Workpiece fixing device: including support seat 26, steel ring support 27, lifting cylinder 2821, metal ring 22, steel rope support 24 and steel wire rope 25, used for firmly clamping the workpiece to be welded on the bed body 3, ensuring the stability during welding.

[0075] Working principle of each preferred technical solution

[0076] Workpiece fixing device:

[0077] The support seat 26 and the steel ring support 27: are arranged around the bed body 3 to provide basic support for the workpiece.

[0078] Lifting cylinder 21 and metal ring 22: installed around the bed 3, the output end is connected to the lifting frame 23, the bottom of the lifting frame 23 is connected to the metal ring 22, and the up and down movement of the metal ring 22 is controlled by the lifting cylinder 2821, so as to adjust the tension of the nickel mesh.

[0079] Steel rope frame 24 and steel wire rope 25: used for traction and tension of nickel mesh, to ensure that it is uniformly tight after being attached to the arc-shaped stainless steel hole plate.

[0080] Welding head 2:

[0081] Cylinder 28 and clamp frame 32: the cylinder 28 is fixedly installed on the top of the rack 29, the output end penetrates the rack 29 and is connected with the clamp frame 32, which is responsible for controlling the up and down action of the welding head 33, and plays a buffering role during welding.

[0082] Inductive switch 37 and spring 35 device: the spring 35 is sleeved on the guide rod 30 and located between the rod frame 31 and the welding frame 34, which needs to be pressed down before welding; after the welding head 33 is lifted, the spring 35 will continue to press on the net for a period of time to prevent the welding head 33 from sticking to the workpiece.

[0083] Adjusting frame 18 and limiting nut: the L-shaped adjusting frame 18 allows the position of the inductive switch 37 to be finely adjusted according to actual needs, ensuring welding accuracy.

[0084] Detailed working process

[0085] S1. Preparation

[0086] Ensure that the base 1, bed 3, double-row beam 5 and welding head 2 are installed stably;

[0087] Check that the electrical system is connected normally, including servo motor 10, inductive switch 37, welding power supply 6, etc.

[0088] S2. Workpiece fixation

[0089] a Place the arc-shaped stainless steel hole plate and nickel mesh to be welded on the steel ring frame 27 located on the bed 3;

[0090] b Install a clamp for traction on the front end of the steel wire rope 25 to clamp the nickel mesh, and tighten the steel wire rope 25 to make the nickel mesh uniformly tight;

[0091] c Under the action of the lifting cylinder 21, move the metal ring 22 with the steel wire rope 25 downward, so that the nickel mesh is tightly stretched on the arc-shaped stainless steel hole plate.

[0092] S3. Start the welding program

[0093] a According to the specific requirements of the workpiece to be welded, select the corresponding welding program on the operation table 4;

[0094] Press the start button to initiate the welding process.

[0095] S4. Welding Process

[0096] a The two symmetric welding heads 2 above and below are driven by a drive motor 9 to drive a drive gear 20 along a drive rack 19 to move in the Y-axis direction on a guide rail 13;

[0097] b The two symmetric welding heads 2 above and below are driven by a servo motor 10 to rotate a threaded rod 11, causing the welding heads 2 to move in the X-axis direction on the upper crossbeam 7 and the lower crossbeam 8;

[0098] c The two symmetric welding heads 2 above and below are driven by a lifting motor 17 to rotate a lifting screw rod, causing the welding heads 2 to move in the Z-axis direction on a lifting frame 15;

[0099] d Welding starts from the middle dot and gradually moves outward in a "return" - shaped welding path circle by circle until all welding points are completed;

[0100] e Stop once for each spacing, controlled by the counting of the lifting motor 17 to ensure the accuracy of the welding spacing;

[0101] f When welding, the spring 35 set at the welding head 33 needs to be pressed down before welding can be carried out. After the welding head 33 is lifted, the spring 35 will continue to press on the mesh for a period of time to prevent the welding head 33 from sticking to the workpiece.

[0102] S5. Welding Completion

[0103] a After welding is completed, the double-row crossbeam 5 automatically retracts to the initial position;

[0104] b The operator can safely remove the workpiece that has completed welding and prepare for the welding work of the next workpiece.

[0105] This welding equipment, through a precise mechanical structure and an intelligent control system, achieves high-precision and highly automated welding operations. Especially for the special requirements of the combustion cloth of the furnace pre-mixed burner head, such as the welding of an arc-shaped stainless steel perforated plate and a nickel mesh, it provides a stable and reliable solution. The design of the equipment takes into account the needs of workpieces of different sizes. By simply replacing the tooling, it can adapt to products of various specifications, greatly improving production efficiency and product quality.

[0106] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding apparatus for a boiler premix combustion head combustion cloth, characterized by, The utility model provides a welding machine head, including base (1), lathe bed (3), double row crossbeam (5) and welding machine head (2), lathe bed (3) is fixedly installed on base (1), both sides of base (1) are installed with guide rail (13), both ends of double row crossbeam (5) are slidably installed on guide rail (13), double row crossbeam (5) includes lower crossbeam (8), upper crossbeam (7) and support (14), support (14) is located in both ends of upper crossbeam (7) and lower crossbeam (8), and lower crossbeam (8) is installed at the bottom of support (14), upper crossbeam (7) is installed at the top of support (14), and lathe bed (3) is located between upper crossbeam (7) and lower crossbeam (8), and the upper crossbeam (7) and the lower crossbeam (8) are installed with slide rail (12), threaded lead screw (11) and servo motor (10), the servo motor (10) is fixedly installed at the end of upper crossbeam (7) and lower crossbeam (8), the threaded lead screw (11) is rotatably installed on the upper crossbeam (7) and the lower crossbeam (8), and the threaded lead screw (11) is connected with the output end of servo motor (10), the upper crossbeam (7) and the lower crossbeam (8) are slidably installed with lifting frame (15) through slide rail (12), the welding machine head (2) is slidably installed on the lifting frame (15) of upper crossbeam (7) and lower crossbeam (8), the lathe bed (3) is equipped with workpiece fixing device, the workpiece fixing device is used for clamping the workpiece to be welded, the workpiece fixing device includes support seat (26), steel ring support (27), lifting cylinder (21), metal ring (22), steel rope support (24) and steel wire rope (25), a plurality of support seat (26) are arranged around on lathe bed (3), steel ring support (27) is fixedly installed on support seat (26), lifting cylinder (21) is rotatably installed on lathe bed (3), the output end of lifting cylinder (21) is installed with pull frame (23), the bottom of pull frame (23) is connected with metal ring (22), a plurality of steel rope support (24) are rotatably installed on metal ring (22), one end of steel wire rope (25) is fixedly installed on steel rope support (24), the guide rail (13) is installed with transmission rack (19), the both ends of lower crossbeam (8) are installed with transmission motor (9), the output end of transmission motor (9) is installed with transmission gear (20), transmission gear (20) is engaged with transmission rack (19), the front side of lifting frame (15) is equipped with track (16), the top of lifting frame (15) is fixedly installed with lifting motor (17), the output end of lifting motor (17) is installed with lifting screw rod, and the lifting screw rod is rotatably installed on lifting frame (15), the welding machine head (2) is slidably connected with track (16) through sliding block.

2. The welding apparatus for the combustion panel of the boiler premix combustion head according to claim 1, characterized in that, The welding head (2) comprises a cylinder (28), a frame (29), a rod frame (31), a guide rod (30), a welding head (33), a welding frame (34) and a clamp frame (32), the cylinder (28) is fixedly installed on the top of the frame (29), the output end of the cylinder (28) penetrates the frame (29), the clamp frame (32) is fixedly installed on the output end of the cylinder (28), the welding head (33) is installed on the front end of the clamp frame (32), the bottom end of the welding head (33) penetrates the welding frame (34), the rod frame (31) is located on both sides of the frame (29), the guide rod (30) penetrates the rod frame (31), and the bottom end of the guide rod (30) is connected with the welding frame (34), the inductive switch (37) is fixedly installed on the rod frame (31), the top end of the guide rod (30) is sleeved with an isolation ring (36), the isolation ring (36) is matched with the inductive switch (37), and the spring (35) is sleeved on the guide rod (30) and located between the rod frame (31) and the welding frame (34).

3. The welding apparatus for the combustion panel of a boiler premix combustion head according to claim 2, characterized in that, The inductive switch (37) is fixedly installed on the rod frame (31) through the adjusting frame (18), the adjusting frame (18) is of L-shaped structure, adjusting ports are formed in the adjusting frame (18), two limiting nuts are symmetrically sleeved on the inductive switch (37) through a threaded structure, and the two limiting nuts clamp the adjusting frame (18).

4. The welding apparatus for the combustion panel of a boiler premix combustion head according to claim 3, characterized in that, Mounting frames (38) are arranged on the frame (29) and the rod frame (31), the adjusting frame (18) is installed on the mounting frame (38) through bolts, the adjusting frame (18) is slidably connected with the track (16) through a sliding block, and the rear end of the adjusting frame (18) is sleeved on the lifting lead screw.

5. The welding apparatus for a boiler premix combustion head combustion panel according to claim 4, wherein A welding power supply (6) and an operation table (4) are further arranged, the welding power supply (6) is fixedly installed on the rear side of the upper cross beam (7) and the lower cross beam (8), the welding power supply (6) is electrically connected with the welding head (2), and the operation table (4) is used for operating various electrical elements.

6. The method of using the welding apparatus for the boiler premix combustion head combustion cloth according to claim 5, wherein The method comprises the following steps: S1, preparation: ensure that the base (1), the bed body (3), the double-row cross beam (5) and the welding head (2) are stably installed, and check that the electrical system is normally connected; S2, workpiece fixing: a, place the arc-shaped stainless steel hole plate and the nickel mesh to be welded on the steel ring frame (27) on the bed body (3); b, install a clamp for traction on the front end of the steel wire rope (25) to clamp the nickel mesh, and tighten the steel wire rope (25) to make the nickel mesh uniformly tight; c, under the action of the lifting cylinder (21), move the metal ring (22) on which the steel wire rope (25) is installed downward to make the nickel mesh tightly stretched on the arc-shaped stainless steel hole plate; S3, start the welding program: a, according to the specific requirements of the workpiece to be welded, select the corresponding welding program on the operation table (4); b, press the start button to start the welding process; S4, welding process: The two upper and lower symmetrical welding heads (2) drive the transmission gear (20) to move along the transmission rack (19) on the guide rail (13) in the Y-axis direction through the transmission motor (9). The upper and lower symmetrical welding heads (2) are driven by a servo motor (10) to rotate a threaded screw rod (11), so that the welding heads (2) move along the X-axis direction on the upper cross beam (7) and the lower cross beam (8); The upper and lower symmetrical welding heads (2) are driven by a lifting motor (17) to rotate a lifting screw rod, so that the welding heads (2) move along the Z-axis direction on the lifting frame (15); d. Welding starts from the middle circle point, and gradually moves outward in a "back" type welding path one circle after another until all the welding points are completely welded; e. Stop once every interval, counted and controlled by the lifting motor (17), to ensure the accuracy of the welding interval; f. The spring (35) arranged at the welding head (33) needs to be pressed down before welding, and the spring (35) will continue to press on the net for a period of time after the welding head (33) is lifted, preventing the welding head (33) from sticking to the workpiece; S5, complete welding: a. After welding is completed, the double-row cross beam (5) automatically retreats to the initial position; b. The operator can safely remove the completed workpiece for welding and prepare for the next workpiece welding work.

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