Welding torch head device, welding turntable and internal welding machine

Abstract

The present application relates to a kind of welding torch head device, welding carousel and internal welding machine, internal welding machine is equipped with welding carousel;The welding carousel includes carousel body, carousel body is equipped with welding wire feeding structure and welding torch head device;The welding torch head device includes torch head, torch box and base, the torch head is connected with torch box by torch head adjusting device, and the torch head is moved by torch head adjusting device;The torch box is connected with base by torch box adjusting device, and the torch box is moved by torch box adjusting device;Base adjusting device drives base movement.The present application provides a kind of welding torch head device, welding carousel and internal welding machine, wherein each adjusting mechanism of welding torch head device is completely integrated and built-in in torch box, so that all structures are compact;Through torch box adjusting device, torch box only needs to carry out linear motion, avoids existing hinged rotating structure, reduces overall volume, also reduces the energy consumption required for this action;Adjust torch head by torch head adjusting device, so that torch head adjusting process is more stable and reliable.

Description

Technical Field

[0001] This invention relates to an internal welding machine and its internal structure, specifically to a welding torch head device, a welding turntable, and an internal welding machine, belonging to the field of machinery. Background Technology

[0002] With the development of the natural gas, oil, and chemical industries, internal welding machines have become indispensable welding equipment in pipeline construction operations. The quality of the welding gun box in the internal welding machine directly affects the quality of the entire welding result. Therefore, the functional quality of the welding gun box has become one of the important factors in the industry for judging the quality of equipment. Various companies are also striving to make their welding gun boxes easier to adjust, easier to use, more stable, and more reliable.

[0003] Currently, most welding gun boxes on the market are not highly integrated. They are basically assembled from various standard components. The gun box is assembled from side plates and an upper cover. The swing (hinged rotation) of the welding gun or gun box is achieved by controlling a cylinder. Due to the large volume of the gun box caused by the rotation space and the fact that the structure is basically a force-intensive structure, the cylinder needs to provide a greater output force.

[0004] Existing equipment, designed to accommodate the various functions of the welding gun housing, has a complex structure with each function existing or designed separately, relying heavily on standard parts. This limitation restricts the overall size of the welding gun housing, resulting in a relatively large weight. Furthermore, the hinged rotating structure causes the angle between the welding gun and the pipe to change with each adjustment of the adjusting nut, altering the overlap and failing to meet welding requirements. This necessitates readjustment of the overlap, significantly increasing the operator's adjustment difficulty. Additionally, this structure is essentially labor-intensive in application, placing high demands on the cylinder's thrust.

[0005] like Figure 1-1 and 1-2 As shown, in the existing welding torch box, the torch box base 1 is fixed to the inner welding machine. The lower end of the rubber telescopic sleeve 2 is fixed to the torch box base 1, and the upper end is connected to the welding torch box 5. The welding torch box 5 is connected to the torch box base 1 through a hinge device 6. The welding torch head 3 is mounted on the angle adjustment mechanism 9 and separated by an insulating collar 8. One end of the angle adjustment mechanism 9 is connected to the welding torch box 5, and the other end is connected to the lateral adjustment mechanism 7. The lateral adjustment mechanism 7 is mounted on the welding torch box 5. The cylinder of the welding torch cylinder 4 is connected to the welding torch base 1, and the piston rod is connected to the welding torch box 5. The wire feeding mechanism is generally mounted on the front frame of the inner welding machine, which has the following drawbacks:

[0006] 1. If the wire feeding mechanism is on the front frame, it is inevitable that the wire feeding needs to be bent, which results in the wire exiting the gun head with a bend;

[0007] 2. Long wire feeding distance leads to increased wire feeding resistance;

[0008] 3. If the wire feeding distance is too long, the welding wire may twist during the transmission process, resulting in the welding wire not being in a consistent state when it exits the welding gun;

[0009] 4. The size is too large and cannot be used in equipment with small pipe diameters;

[0010] 5. The increased weight and length of the front frame increased the difficulty of equipment debugging. Summary of the Invention

[0011] This invention provides a welding torch head device, a welding turntable, and an internal welding machine. The internal welding machine is equipped with a welding turntable, which includes a turntable body, a welding wire feeding structure, and a welding torch head device. The welding torch head device includes a torch head, a torch housing, and a base. The torch head is connected to the torch housing via a torch head adjustment device, which drives the torch head to move laterally, making the torch head adjustment process more stable and reliable. The torch housing is connected to the base via a torch housing adjustment device, which drives the torch housing to move longitudinally, allowing the torch housing to move only in a straight line, avoiding existing hinged rotating structures, reducing the overall size, and reducing the energy consumption required for this action. The base adjustment device drives the base to move, thereby allowing the torch head to move up and down during the welding operation to adapt to the requirements of welding pipe walls of different thicknesses. All the adjustment mechanisms of this welding torch head device are fully integrated and built into the welding torch housing, making the entire structure compact.

[0012] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0013] (1) A welding torch head device, comprising a torch head, a torch box and a base, wherein the torch head is connected to the torch box via a torch head adjustment device and the torch head is moved by the torch head adjustment device; the torch box is connected to the base via a torch box adjustment device and the torch box is moved by the torch box adjustment device; and the base is moved by the base adjustment device.

[0014] (2) According to the welding torch head device described in (1), the torch head adjustment device includes a slider and an adjustment rod. The torch head is connected to the slider. The slider is set in the track groove of the torch box. The adjustment rod drives the slider to move in the track groove, thereby driving the torch head to move. The lateral movement of the slider can drive the torch head to move laterally, that is, the position of the torch head can be adjusted laterally according to the welding requirements during the welding operation.

[0015] (3) According to the welding gun head device described in (1) or (2), the adjusting rod is connected to the adjusting rod nut, and the adjusting rod nut is located on the side of the gun box; the adjusting rod is connected to the slider by a thread, and the slider is driven to move in the track groove by rotating the adjusting rod, thereby driving the gun head to move. After the gun head reaches the predetermined position, the adjusting rod is locked by the adjusting rod nut, thereby fixing the position of the gun head.

[0016] (4) The welding torch head device according to any one of (1)-(3), wherein the torch head is connected to the slider via an inclined block and the torch head is fixed on the inclined block.

[0017] (5) The welding torch head device according to any one of (1)-(4), wherein the inclined block is an insulating material, or an insulating sleeve is provided between the torch head and the inclined block. The function of the inclined block is to adjust the tilt angle of the torch head. During the welding process, the torch head is electrified. The inclined block, being an insulating material, can play an insulating role to prevent the torch box from becoming electrified.

[0018] (6) The welding torch head device according to any one of (1)-(5) is provided with a dustproof plate on the torch head, and the torch head is separated from the screw by an insulating spacer, the screw being fixed to the slider. During the welding process, the torch head is electrified, and the insulating spacer can play an insulating role to prevent the torch box from becoming electrified.

[0019] (7) The welding torch head device according to any one of (1)-(6) is a cylinder, the cylinder is disposed in the torch box, the cylinder includes a piston rod, and the piston rod is connected to the base.

[0020] (8) The welding torch head device according to any one of (1)-(7), wherein the cylinder further includes a cylinder cover, the cylinder cover being disposed below the cylinder, the cylinder having an air inlet and an air outlet, and the movement of the cylinder driving the movement of the torch box. Since the torch head is connected to the torch box, the longitudinal movement of the torch box can drive the longitudinal movement of the torch head. During the welding operation, the torch head can be extended to the welding position or retracted according to the welding requirements.

[0021] (9) The welding torch head device according to any one of (1)-(8) is a torch box adjustment device, wherein the electric cylinder is disposed in the torch box, the electric cylinder includes a motor and a lead screw, the lead screw is connected to the motor, and the motor is connected to the base.

[0022] (10) The welding gun head device according to any one of (1)-(9) further includes a nut, which is connected to the gun box to stabilize the electric cylinder inside the gun box.

[0023] (11) The welding torch head device according to any one of (1)-(10), wherein the base adjustment device is an adjustment screw, the base is connected to the adjustment screw, and the base is driven to move by the adjustment screw. Since the torch box is connected to the base and the torch head is connected to the torch box, rotating the adjustment screw can drive the base to move up and down, thereby allowing the torch head to move up and down during the welding operation to adapt to the requirements of different thicknesses of the welded pipe wall.

[0024] (12) The welding torch head device according to any one of (1)-(11) is provided with an adjusting nut above the adjusting screw and a thread below the adjusting screw. The base is connected to the adjusting screw by the thread, the base is driven to move by rotating the adjusting screw, and the adjusting screw is locked by the adjusting nut.

[0025] (13) The welding torch head device according to any one of (1)-(12) is further provided with a screw and a baffle at the lower end of the adjusting screw; the base is driven to move by rotating the adjusting screw.

[0026] (14) The welding torch head device according to any one of (1)-(13), wherein the pressure nut is disposed on the welding turntable of the inner welding machine.

[0027] (15) The welding torch head device according to any one of (1)-(14) is provided with a cable interface, a welding wire inlet and a protective gas inlet at the bottom of the torch box.

[0028] (16) The welding torch head device according to any one of (1)-(15), wherein the protective gas is a mixture of argon and carbon dioxide.

[0029] (17) A welding turntable, comprising a turntable body, wherein a welding wire feeding structure and a welding torch head device are provided on the turntable body, and toothed grooves are provided on the inner side of the turntable body; the welding wire feeding structure includes a wire spool and a wire feeding mechanism, wherein the wire spool is rotatably disposed on the turntable body; and the wire feeding mechanism is fixed on the turntable body by a wire feeder support.

[0030] (18) According to the welding turntable described in (17), the wire feeding mechanism includes a wire feeding motor, a reducer, a wire feeding wheel, a bearing pressure wheel structure, a front wire feeding hole device and a rear wire feeding hole device; the wire feeding motor, reducer, wire feeding wheel, bearing pressure wheel structure, front wire feeding hole device and rear wire feeding hole device are arranged on the wire feeder support; a V-groove is provided on the wire feeding wheel.

[0031] (19) According to the welding turntable described in (17) or (18), a front wire feeding hole device and a rear wire feeding hole device are respectively provided at the front and rear of the wire feeding wheel; the front wire feeding hole device includes a wire guide seat and a wire guide; the rear wire feeding hole device includes a wire spring pressure block and a wire spring.

[0032] (20) According to the welding turntable described in (17)-(19), a wire feeding wheel insulating sleeve and a wire feeding wheel insulating pad are provided on the wire feeding wheel; the bearing pressure wheel structure includes a spring pressure shaft, an upper cover plate, a spring, a pressure wheel seat, an insulating pad, an insulating sleeve and a bearing.

[0033] (21) According to the welding turntable described in (17)-(20), a welding wire is provided on the wire spool. The welding wire passes through the guide nozzle of the front wire feeding device, the V-groove of the wire feeding wheel and the wire spring of the rear wire feeding device in sequence, and enters the welding gun head device through the welding wire inlet. The welding wire bears the bearing pressure at the V-groove. When the wire feeding wheel rotates, the welding wire is transported from the guide nozzle of the front wire feeding device to the wire spring of the rear wire feeding device, thereby realizing the wire feeding movement.

[0034] (22) The welding turntable according to any one of (17)-(21) is provided with at least one welding wire feeding structure and at least one welding gun head device on the turntable body, wherein the welding wire feeding structure and the welding gun head device correspond one to one.

[0035] (23) The welding turntable according to any one of (17)-(22) is provided with up to four wire feeding structures and four welding gun head devices, wherein the wire feeding structures and welding gun head devices correspond one to one.

[0036] (24) The welding turntable according to any one of (17)-(23) is provided with up to six wire feeding structures and six welding gun head devices on the turntable body, wherein the wire feeding structures and welding gun head devices correspond one to one.

[0037] (25) The welding turntable according to any one of (17)-(24), wherein the welding turntable is connected to the inner welding machine by means of teeth, and the teeth of the welding turntable are rotatably connected to the inner welding machine.

[0038] (26) An internal welding machine, wherein a welding turntable is provided on the internal welding machine, the welding turntable includes a turntable body, and a welding wire feeding structure and a welding gun head device are provided on the turntable body.

[0039] The welding torch head assembly includes a torch head, a torch box, and a base. The torch head is connected to the torch box via a torch head adjustment device, which drives the torch head to move. The torch box is connected to the base via a torch box adjustment device, which drives the torch box to move. The base adjustment device also drives the base to move.

[0040] The wire feeding structure includes a wire spool and a wire feeding mechanism. The wire spool is rotatably mounted on the turntable body. The wire feeding mechanism is fixed to the turntable body by a wire feeder support.

[0041] (27) According to the internal welding machine described in (25), the base adjustment device is an adjustment screw, the base is connected to the adjustment screw, a pressure nut is provided above the adjustment screw, and a thread is provided below the adjustment screw. The base is connected to the adjustment screw through the thread, the base moves by rotating the adjustment screw, and the adjustment screw is locked by the pressure nut; the pressure nut is provided on the turntable body.

[0042] (28) According to the internal welding machine described in (25) or (26), the gun head adjustment device includes a slider and an adjustment rod. The gun head is connected to the slider, the slider is set in the track groove of the gun box, the adjustment rod is connected to the adjustment rod nut, and the adjustment rod nut is set on the side of the gun box. The adjustment rod and the slider are connected by a thread. By rotating the adjustment rod, the slider is driven to move in the track, thereby driving the gun head to move. The adjustment rod is locked by the adjustment rod nut.

[0043] (29) The inner welding machine according to any one of (25)-(28), wherein the gun box adjusting device is a cylinder, the cylinder is disposed in the gun box, the cylinder includes a piston rod, the piston rod is connected to the base; or the gun box adjusting device is an electric cylinder, the electric cylinder is disposed inside the gun box, the electric cylinder includes a motor and a lead screw, the lead screw is connected to the motor, the motor is connected to the base.

[0044] (30) The welding machine according to any one of (25)-(29), wherein the welding turntable rotates by the teeth on the inner side of the turntable.

[0045] (31) The internal welding machine according to any one of (25)-(30), wherein the wire feeding mechanism includes a wire feeding motor, a reducer, a wire feeding wheel, a bearing pressure wheel structure, a front wire feeding hole device and a rear wire feeding hole device; the wire feeding motor, reducer, wire feeding wheel, bearing pressure wheel structure, front wire feeding hole device and rear wire feeding hole device are mounted on a wire feeding machine support; a V-groove is provided on the wire feeding wheel; a front wire feeding hole device and a rear wire feeding hole device are provided at the front and rear of the wire feeding wheel respectively; the front wire feeding hole device includes a wire guide nozzle seat and a wire guide nozzle; the rear wire feeding hole device includes a wire spring pressure block and a wire spring; a wire feeding wheel insulating sleeve and a wire feeding wheel insulating pad are provided on the wire feeding wheel; the bearing pressure wheel structure includes a spring pressure shaft, an upper cover plate, a spring, a pressure wheel seat, an insulating pad, an insulating sleeve and a bearing.

[0046] (32) The internal welding machine according to any one of (25)-(31), the internal welding machine further includes a front frame, a middle frame, a rear frame and an air tank; a control system and an alignment device are installed in the front frame; a tensioning mechanism is provided between the front frame and the middle frame, and the welding turntable is arranged in the tensioning mechanism; a floating spring mechanism is provided between the middle frame and the rear frame; a drive mechanism, a brake mechanism and a walking mechanism are provided on the rear frame; the rear frame is connected to the air tank.

[0047] This invention provides a welding torch head device, a welding turntable, and an internal welding machine. The torch head adjustment device allows for horizontal adjustment of the torch head position according to welding requirements, while the torch box adjustment device allows for vertical adjustment. The base adjustment device enables the torch head to move up and down to accommodate welding pipe walls of varying thicknesses. This invention offers the following beneficial technical effects:

[0048] (1) The gun head adjustment device, gun box adjustment device and base adjustment device are fully integrated and built into the gun box, making all the structures compact and the overall volume much smaller than the existing welding gun boxes;

[0049] (2) The gun box adjustment device acts directly on the gun box, making the gun box move in a straight line, avoiding the hinged rotation structure in the prior art; since the space occupied by the hinged rotation structure is much larger than that of the gun box adjustment device, the gun box adjustment device makes the overall volume of the welding gun head device smaller.

[0050] (3) The gun box adjustment device makes the gun box move in a straight line. The straight line motion directly transmits the force, which reduces the amplification of the force and reduces energy loss.

[0051] (4) The gun box adjustment device ensures that the gun box moves along the pipe radius during linear motion, thus eliminating the problem of adjusting the overlap of the weld when the wall thickness of the welded pipe is different. This greatly reduces the difficulty of adjustment for the operator and makes the equipment adjustment faster and more convenient.

[0052] (5) The gun head adjustment device includes a slider and an adjustment rod. The slider is set in the track groove of the gun box. The adjustment rod drives the slider to move in the track groove, thereby driving the gun head to move. Therefore, the gun head adjustment process is more stable and reliable, avoiding the error problem of bolt adjustment in the prior art. Moreover, the fit accuracy between the track groove and the slider is necessarily higher than the fit accuracy between the screw and the thread.

[0053] (6) The wire feeding structure is set on the welding turntable so that the wire spool is close to the welding gun head device, so that the welding wire can easily enter the gun head. This can reduce the wire feeding distance, reduce the wire feeding resistance, and reduce the degree of bending of the welding wire, thereby achieving the technical effect of more stable wire feeding and saving welding wire.

[0054] In this invention, the relevant terms have the following meanings:

[0055] Welding wire: A metal wire that melts and fills the joint between two workpieces during the welding process. At the same time, the welding wire also acts as a conductive electrode during operation.

[0056] Weld bead: A single weld bead formed by each deposition of molten metal during welding.

[0057] Overlap amount: Specifically refers to the amount of overlap between two adjacent weld passes during welding. Attached Figure Description

[0058] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0059] Figure 1-1 This is a schematic diagram of the welding gun box structure in the prior art;

[0060] Figure 1-2for Figure 1-1 AA section view;

[0061] Figure 2 This is a schematic diagram of the welding torch head assembly.

[0062] Figure 3 This is a schematic diagram of the gun head adjustment device;

[0063] Figure 4 This is a schematic diagram showing the interaction between the gun head and the slider.

[0064] Figure 5 This is a schematic diagram of the cylinder structure;

[0065] Figure 6 This is a schematic diagram of the electric cylinder structure;

[0066] Figure 7 This is a schematic diagram of the base structure;

[0067] Figure 8 This is a schematic diagram of the mating structure between the pressure nut and the welding turntable;

[0068] Figure 9 A schematic diagram showing the addition of an insulating structure between the gun head and the inclined block;

[0069] Figure 10 This is a schematic diagram of the welding turntable.

[0070] Figure 11 This is a schematic diagram of the wire feeding mechanism;

[0071] Figure 12 for Figure 11 The diagram on the right;

[0072] Figure 13 A schematic diagram of the internal welding machine.

[0073] The diagram labels are as follows: 1 is the gun box base, 2 is the rubber telescopic sleeve, 3 is the welding torch head, 4 is the welding torch cylinder, 5 is the welding torch box, 6 is the hinge device, 7 is the lateral adjustment mechanism, 8 is the insulating collar, 9 is the angle adjustment mechanism, 10 is the gun box, 10-1 is the cable interface, 10-2 is the welding wire inlet, 10-3 is the protective gas inlet, 10-4 is the cylinder, 10-5 is the electric cylinder, 10-6 is the track groove, 11 is the torch head, 12 is the inclined block, 13 is the pressure nut, 14 is the adjusting screw, 15 is the base, 16 is the slider, 17 is the adjusting rod pressure nut, 18 is the adjusting rod, 19 is the pressure plate, 20 is the piston rod, 21 is the piston, 22 is the cylinder head, 23 is the screw, 24 is the baffle, 25 is the wire feeding mechanism motor, 26 is... The components are as follows: speed reducer, spring shaft, upper cover plate, wire feeder support, spring, pressure roller seat, insulating pad, insulating sleeve, bearing, wire feeder wheel, wire feeder wheel insulating sleeve, wire feeder wheel insulating pad, wire guide nozzle seat, wire spring pressure block, wire guide nozzle, wire spring, motor, nut, lead screw, wire spool, turntable body, toothed thread, welding torch head assembly, wire feeding mechanism, outer shell, air tank, welding turntable, front frame, middle frame, rear frame, dustproof plate, insulating sleeve, and screw. Detailed Implementation

[0074] Example 1:

[0075] like Figure 2 As shown, a welding torch head device includes a torch head 11, a torch housing 10, and a base 15. The torch head 11 is connected to the torch housing 10 via a torch head adjustment device, which drives the torch head 11 to move. The torch housing 10 is connected to the base 15 via a torch housing adjustment device, which drives the torch housing 10 to move. The base 15 is also driven to move via a base adjustment device. The torch housing 10 has a cable interface 10-1, a welding wire inlet 10-2, and a shielding gas inlet 10-3 (e.g., [missing information]). Figure 4 As shown, the gun head 11 is connected to the cable through the cable interface 10-1, the welding wire is inserted into the gun head 11 through the welding wire inlet 10-2, and the protective gas is introduced through the protective gas inlet 10-3. The protective gas is a mixture of argon and carbon dioxide.

[0076] like Figure 3 , 4As shown, the gun head adjustment device includes a slider 16 and an adjusting rod 18 connected together. The gun head 11 is connected to the slider 16, which is disposed in the track groove 10-6 of the gun box 10. The adjusting rod 18 is connected to an adjusting rod nut 17, which is disposed on the side of the gun box 10. The adjusting rod 18 is locked by the adjusting rod nut 17. When the gun head 11 reaches the predetermined position, the adjusting rod 18 is locked by the adjusting rod nut 17, thereby fixing the position of the gun head 11. The adjusting rod 18 and the slider 16 are connected by a thread. By rotating the adjusting rod 18, the adjusting rod 18 rotates, causing the slider 16 to move within the track groove 10-6, thereby causing the gun head 11 to move. The lateral movement of the slider 16 can cause the gun head 11 to move laterally (movement on the horizontal plane). Figure 2 The direction of the arrow in the image indicates that the position of the gun head can be adjusted laterally during the welding operation according to the welding requirements. The gun head adjustment device is also equipped with a pressure plate 19, which is connected to the gun box 10 and is used to limit the up and down sliding of the slider 16.

[0077] Preferably, the gun head 11 is connected to the slider 16 via a wedge block 12, and the gun head 11 is fixed to the wedge block 12. The wedge block 12 is made of insulating material; the function of the wedge block 12 is to adjust the tilt angle of the gun head 11. During the welding process, the gun head 11 is electrified, and the wedge block 12, being an insulating material, can provide insulation to prevent the gun box 10 from becoming electrified.

[0078] like Figure 5 As shown, the gun case adjustment device is a cylinder 10-4, which is located inside the gun case 10. The cylinder 10-4 includes a piston rod 20 and a piston 21. The piston rod 20 is connected to the base 15. The cylinder cover 22 is located below the cylinder 10-4. The cylinder 10-4 has an air inlet (not shown) and an air outlet (not shown). The movement of the cylinder 10-4 drives the movement of the gun case 10. Since the gun head 11 is connected to the gun case 10, the longitudinal movement (movement on the vertical plane) of the gun case 10... Figure 5 (The arrow in the image) can drive the gun head 11 to move longitudinally.

[0079] like Figure 7 As shown, the gun housing 10 is connected to the base 15 via the piston rod 20 of the cylinder. The base adjustment device is an adjusting screw 14, and the base 15 is connected to the adjusting screw 14. A pressure nut 13 is provided above the adjusting screw 14, and the pressure nut 13 is set on the welding turntable of the inner welding machine (e.g., Figure 8(As shown), thus connecting the base 15 to the welding turntable. A thread is provided below the adjusting screw 14, and the base 15 is connected to the adjusting screw 14 via the thread. Rotating the adjusting screw 14 drives the base 15 to move, and the adjusting screw 14 is locked by the pressure nut 13. When the gun head 11 reaches the predetermined position, the adjusting screw 14 is locked by the pressure nut 13, thereby fixing the position of the gun head 11. A screw 23 and a baffle 24 are also provided at the lower end of the adjusting screw 14. The screw 23 is connected to the adjusting screw 14 via the thread, and the baffle 24 is fixed to the lower end of the adjusting screw 14, restricting the movement of the base 15 within a specified stroke. Since the gun box 10 is connected to the base 15, and the gun head 11 is connected to the gun box 10, rotating the adjusting screw 14 can drive the base 15 to move up and down (e.g., ...). Figure 7 (The arrow in the image indicates the direction of the welding torch), which allows the torch head 11 to move up and down during the welding process to adapt to the different thicknesses of the welded pipe wall.

[0080] The working process of the welding torch head assembly is as follows: the movement of cylinder 10-4 drives the longitudinal movement of torch box 10 (e.g., Figure 5 (As indicated by the arrow in the image), this causes the torch head 11 to move longitudinally, meaning that during the welding operation, the torch head 11 can be extended to the welding position or retracted according to the welding requirements; rotating the pressure nut 13 can loosen or tighten the adjusting screw 14, and rotating the adjusting screw 14 can cause the base 15 to move up and down (e.g., ...). Figure 7 (The arrow in the image indicates the direction of the weld) This allows the torch head 11 to move up and down during the welding process to adapt to different wall thicknesses. The insulating inclined block 12 prevents the torch box 10 from becoming electrified. The tilt angle of the torch head 11 can also be adjusted by replacing the inclined block 12 with different angles. The adjusting rod nut 17 can be rotated to loosen or lock the adjusting rod 18. Rotating the adjusting rod 18 causes it to rotate, which in turn drives the slider 16 to move laterally within the track groove 10-6, thereby causing the torch head 11 to move laterally (e.g., ...). Figure 2 (The direction of the arrow in the image).

[0081] Example 2:

[0082] The only difference between this embodiment and Embodiment 1 is that the gun box adjustment device is an electric cylinder, such as... Figure 6 As shown, the gun box adjustment device is set as an electric cylinder 10-5, which is located inside the gun box 10. The electric cylinder includes a motor 42, a lead screw 44, and a nut 43. The lead screw 44 is connected to the motor 42, the motor 42 is connected to the base 15, and the nut 43 is connected to the gun box 10, thus securing the electric cylinder 10-5 inside the gun box 10. The movement of the lead screw 44 of the electric cylinder drives the movement of the gun box 10. Since the gun head 11 is connected to the gun box 10, the longitudinal movement (movement on the vertical plane) of the gun box 10... Figure 6(The arrow in the image indicates the direction of ...

[0083] Example 3:

[0084] like Figure 9 As shown, the only difference between this embodiment and Embodiment 1 is that the inclined block 12 in Embodiment 1 is made of insulating material, while the inclined block 12 in this embodiment is made of non-insulating material. An insulating spacer 56 is provided between the gun head 11 and the inclined block 12. Specifically, a dustproof plate 55 is provided on the gun head 11, and the gun head 11 is fixed to the inclined block 12 by screws 56-1. The insulating spacer 56 separates the screws 56-1 from the gun head 11, and the screws 56-1 are directly fastened to the slider 16. During the welding process, the gun head 11 becomes electrified, and the insulating spacer 56 can prevent the gun box 10 from becoming electrified.

[0085] Example 4:

[0086] like Figure 10 As shown, a welding turntable includes a turntable body 46, on which a welding wire feeding structure and a welding torch head device 47 are provided (see embodiments 1, 2, and 3 for specific structures). A toothed pattern 46-1 is provided on the inner side of the turntable body 46, and the turntable body 46 is connected to an internal welding machine via the toothed pattern 46-1. The welding wire feeding structure includes a wire spool 45 and a wire feeding mechanism 48. The wire spool 45 is rotatably mounted on the turntable body 46. The wire feeding mechanism 48 is fixed to the turntable body 46 via a wire feeder support 29. A housing 49 is provided above the wire spool 45 and the wire feeding mechanism 48 to protect them. The housing 49 is detachably mounted on the turntable body 46.

[0087] like Figure 11 , 12 As shown, the wire feeding mechanism 48 includes a wire feeding motor 25, a reducer 26, a wire feeding machine support 29, a wire feeding wheel 35, a bearing pressure roller structure, a front wire feeding hole device, and a rear wire feeding hole device. The wire feeding motor 25, reducer 26, wire feeding wheel 35, bearing pressure roller structure, front wire feeding hole device, and rear wire feeding hole device are mounted on the wire feeding machine support 29. The wire feeding wheel 35 is provided with a wire feeding wheel insulating sleeve 36 and a wire feeding wheel insulating pad 37, and a V-groove (not shown in the figure) is provided on the wire feeding wheel 35. The bearing pressure roller structure includes a spring pressure shaft 27, an upper cover plate 28, a spring 30, a pressure roller seat 31, an insulating pad 32, an insulating sleeve 33, and a bearing 34. A front wire feeding hole device and a rear wire feeding hole device are respectively provided at the front and rear of the wire feeding wheel 35. The front wire feeding hole device includes a guide nozzle seat 38 and a guide nozzle 40; the rear wire feeding hole device includes a wire spring pressure block 39 and a wire spring 41.

[0088] The working process of the wire feeding mechanism 48 shown is as follows: the welding wire from the wire spool 45 passes sequentially through the guide nozzle 40 of the front wire feeding hole device, the V-groove of the wire feeding wheel 3, and the wire spring 41 of the rear wire feeding hole device, and enters the welding gun head device through the welding wire inlet; during the welding process, the motor 25 of the wire feeding mechanism rotates, driving the reducer 26 to rotate, thereby driving the wire feeding wheel 35 to rotate. Since the welding wire is subjected to the clamping force of the V-groove on the wire feeding wheel 35 and the bearing 34, when the wire feeding wheel 35 rotates, it conveys the welding wire from the guide nozzle 40 of the front wire feeding hole device to the wire spring 41 of the rear wire feeding hole device, thereby realizing the wire feeding movement; by rotating the spring pressure shaft 27, the compression of the spring 30 is adjusted, and the clamping force of the bearing 34 on the welding wire can be adjusted through the force transmission of the pressure wheel seat 31.

[0089] The turntable body is provided with at least one welding wire feeding structure and at least one welding torch head device, with each welding wire feeding structure and welding torch head device corresponding to the other. Preferably, the turntable body is provided with four welding wire feeding structures and four welding torch head devices, with each welding wire feeding structure and welding torch head device corresponding to the other.

[0090] Example 5:

[0091] In this embodiment, the welding torch head device of the internal welding machine has the same structure as the welding torch head device in Embodiments 1, 2 or 3, and the welding turntable 51 in this embodiment has the same structure as the welding turntable in Embodiment 4.

[0092] like Figure 13 As shown, an internal welding machine includes a front frame 52, a middle frame 53, a rear frame 54, and an air tank 50. A control system and a welding head are installed in the front frame 52. A tensioning mechanism is provided between the front frame 52 and the middle frame 53, and a welding turntable 51 is disposed within the tensioning mechanism. A floating spring mechanism is provided between the middle frame 53 and the rear frame 54. A drive mechanism, a brake mechanism, and a traveling mechanism are provided on the rear frame 54, which is connected to the air tank 50. The main innovative structure of this invention is the welding turntable 51, with a wire feeding mechanism 48 disposed on the welding turntable 51. The structure of other parts of the internal welding machine is identical to that of the applicant's prior patent (application number 201580003001.4). Therefore, the applicant incorporates the relevant content of this prior patent (application number 201580003001.4) into this invention.

[0093] The welding turntable (see Embodiment 4 for specific structure) includes a turntable body, on which a welding wire feeding structure and a welding torch head device are provided (see Embodiment 1, 2 or 3 for specific mechanism).

[0094] The above embodiments are not exhaustive examples of specific implementation methods, and other embodiments are also possible. The purpose of the above embodiments is to illustrate the present invention, rather than to limit the scope of protection of the present invention. All applications derived from simple variations of the present invention fall within the scope of protection of the present invention.

[0095] This patent specification uses examples to illustrate the invention, including the best mode, and to enable those skilled in the art to make and use the invention. The scope of this invention can be claimed by including the contents of the claims and the specific embodiments and other examples described in the specification. These other examples should also fall within the scope of the patent claims, provided that they contain the technical features described in the same written language as the claims, or that they contain technical features described in similar literal language that are not substantially different from the claims.

[0096] All patents, patent applications, and other references cited in this invention are incorporated herein by reference in their entirety. However, if a term in this application conflicts with a term already included in the references, the term in this application shall prevail.

[0097] It is important to note that terms such as "first," "second," or similar do not indicate any order, quality, or importance; they are merely used to distinguish different technical features. The modifier "approximately" used with quantities includes the meaning specified by the value and the context (e.g., it includes the margin of error when measuring a specific quantity).

Claims

1. A welding torch head device, characterized in that: It includes a gun head, a gun case, and a base. The gun head is connected to the gun case via a gun head adjustment device, which drives the movement of the gun head. The gun case is connected to the base via a gun case adjustment device, which drives the movement of the gun case. The base is moved by the base adjustment device; The gun head adjustment device includes a slider and an adjustment rod. The gun head is connected to the slider, and the slider is set in the track groove of the gun box. The adjustment rod drives the slider to move in the track groove, thereby driving the gun head to move. The gun case adjustment device is a pneumatic cylinder or an electric cylinder; When the gun box adjustment device is a cylinder, the cylinder is installed inside the gun box along the direction of the gun head extension. The cylinder includes a piston rod, which is connected to the base. When the piston rod reciprocates inside the cylinder, it drives the gun box to move linearly along the radial direction of the pipe to be welded. When the gun box adjustment device is an electric cylinder, the electric cylinder is installed inside the gun box along the direction of the gun head extension. The electric cylinder includes a motor and a lead screw. The lead screw is connected to the motor, and the motor is connected to the base. When the lead screw reciprocates relative to the electric cylinder, it drives the gun box to move linearly along the radial direction of the pipe to be welded. The base adjustment device is an adjustment screw. The base is connected to the adjustment screw, and the adjustment screw drives the base to move. A pressure nut is provided above the adjustment screw, and a thread is provided below the adjustment screw. The base is connected to the adjustment screw through the thread, and the pressure nut is set on the welding turntable of the inner welding machine.

2. The welding torch head device according to claim 1, characterized in that: The adjusting rod is connected to the adjusting rod nut, and the adjusting rod nut is located on the side of the gun box.

3. The welding torch head device according to claim 2, characterized in that: The gun head is connected to the slider via a wedge block, and the gun head is fixed to the wedge block.

4. The welding torch head device according to claim 3, characterized in that: The inclined block is made of insulating material, or an insulating sleeve is provided between the gun head and the inclined block.

5. The welding torch head device according to claim 4, characterized in that: A dustproof plate is provided on the gun head, and the screw is separated from the gun head by an insulating spacer. The screw is fixed on the slider.

6. The welding torch head device according to claim 1, characterized in that: The cylinder also includes a piston and a cylinder head, with the cylinder head located below the cylinder. The cylinder has an air inlet and an air outlet, and the movement of the cylinder drives the movement of the gun box.

7. The welding torch head device according to claim 1, characterized in that: A screw and a baffle are also provided at the lower end of the adjusting screw; rotating the adjusting screw drives the base to move.

8. The welding torch head device according to claim 1, characterized in that: The gun box is equipped with a cable interface, a welding wire inlet, and a protective gas inlet at the bottom.

9. The welding torch head device according to claim 8, characterized in that: The protective gas is a mixture of argon and carbon dioxide.

10. A welding turntable, characterized in that: The device includes a turntable body, on which a welding wire feeding structure and a welding torch head device according to any one of claims 1-9 are provided, and toothed grooves are provided on the inner side of the turntable body; the welding wire feeding structure includes a wire spool and a wire feeding mechanism, the wire spool being rotatably disposed on the turntable body; the wire feeding mechanism being fixed on the turntable body by a wire feeder support.

11. The welding turntable according to claim 10, characterized in that: The wire feeding mechanism includes a wire feeding motor, a reducer, a wire feeding wheel, a bearing pressure roller structure, a front wire feeding hole device, and a rear wire feeding hole device; the wire feeding motor, reducer, wire feeding wheel, bearing pressure roller structure, front wire feeding hole device, and rear wire feeding hole device are mounted on the wire feeding machine support; a V-groove is provided on the wire feeding wheel.

12. The welding turntable according to claim 11, characterized in that: A front wire feeding hole device and a rear wire feeding hole device are respectively provided at the front and rear of the wire feeding wheel; the front wire feeding hole device includes a wire guide nozzle seat and a wire guide nozzle; the rear wire feeding hole device includes a wire spring pressure block and a wire spring.

13. The welding turntable according to claim 12, characterized in that: The wire feeding wheel is provided with a wire feeding wheel insulating sleeve and a wire feeding wheel insulating pad; the bearing pressure wheel structure includes a spring pressure shaft, an upper cover plate, a spring, a pressure wheel seat, an insulating pad, an insulating sleeve, and a bearing.

14. The welding turntable according to claim 13, characterized in that: The wire spool is provided with welding wire. The welding wire passes through the guide nozzle of the front wire feeding device, the V-groove of the wire feeding wheel, and the wire spring of the rear wire feeding device in sequence, and enters the welding gun head device through the welding wire inlet. The welding wire bears the bearing pressure at the V-groove. When the wire feeding wheel rotates, it conveys the welding wire from the guide nozzle of the front wire feeding device to the wire spring of the rear wire feeding device.

15. The welding turntable according to claim 10, characterized in that: The turntable body is provided with at least one welding wire feeding structure and at least one welding gun head device, and the welding wire feeding structure and the welding gun head device correspond one to one.

16. The welding turntable according to claim 10, characterized in that: The welding turntable is connected to the inner welding machine via teeth, and the teeth of the welding turntable are rotatably connected to the inner welding machine.

17. An internal welding machine, characterized in that: The internal welding machine is equipped with a welding turntable, which includes a turntable body and a welding wire feeding structure and a welding torch head device. The welding torch head assembly includes a torch head, a torch box, and a base. The torch head is connected to the torch box via a torch head adjustment device, which drives the torch head to move. The torch box is connected to the base via a torch box adjustment device, which drives the torch box to move. The base is moved by the base adjustment device; The gun head adjustment device includes a slider and an adjustment rod, the gun head is connected to the slider, and the slider is set in the track groove of the gun box; The gun case adjustment device is a pneumatic cylinder or an electric cylinder; When the gun box adjustment device is a cylinder, the cylinder is installed inside the gun box along the direction of the gun head extension. The cylinder includes a piston rod, which is connected to the base. When the piston rod reciprocates inside the cylinder, it drives the gun box to move linearly along the radial direction of the pipe to be welded. When the gun box adjustment device is an electric cylinder, the electric cylinder is installed inside the gun box along the direction of the gun head extension. The electric cylinder includes a motor and a lead screw. The lead screw is connected to the motor, and the motor is connected to the base. When the lead screw reciprocates relative to the electric cylinder, it drives the gun box to move linearly along the radial direction of the pipe to be welded. The base adjustment device is an adjustment screw, the base is connected to the adjustment screw, a pressure nut is provided above the adjustment screw, and a thread is provided below the adjustment screw. The base is connected to the adjustment screw through the thread, and the pressure nut is provided on the turntable body. The wire feeding structure includes a wire spool and a wire feeding mechanism. The wire spool is rotatably mounted on the turntable body. The wire feeding mechanism is fixed to the turntable body by a wire feeder support.

18. The internal welding machine according to claim 17, characterized in that: The base is moved by rotating the adjusting screw, and the adjusting screw is locked by the pressure nut.

19. The internal welding machine according to claim 17, characterized in that: The adjusting rod is connected to the adjusting rod nut, which is located on the side of the gun box. The adjusting rod is connected to the slider by a thread. By rotating the adjusting rod, the slider moves within the track groove, thereby moving the gun head.

20. The internal welding machine according to claim 17, characterized in that: The wire feeding mechanism includes a wire feeding motor, a reducer, a wire feeding wheel, a bearing pressure roller structure, a front wire feeding hole device, and a rear wire feeding hole device; the wire feeding motor, reducer, wire feeding wheel, bearing pressure roller structure, front wire feeding hole device, and rear wire feeding hole device are mounted on a wire feeding machine support; a V-groove is provided on the wire feeding wheel; a front wire feeding hole device and a rear wire feeding hole device are respectively provided at the front and rear of the wire feeding wheel; the front wire feeding hole device includes a guide nozzle seat and a guide nozzle; the rear wire feeding hole device includes a wire spring pressure block and a wire spring; a wire feeding wheel insulating sleeve and a wire feeding wheel insulating pad are provided on the wire feeding wheel; the bearing pressure roller structure includes a spring pressure shaft, an upper cover plate, a spring, a pressure roller seat, an insulating pad, an insulating sleeve, and a bearing.

21. The internal welding machine according to claim 20, characterized in that: The internal welding machine also includes a front frame, a middle frame, a rear frame, and an air tank; a control system and an alignment device are installed in the front frame; a tensioning mechanism is provided between the front frame and the middle frame, and the welding turntable is set in the tensioning mechanism; a floating spring mechanism is provided between the middle frame and the rear frame; a drive mechanism, a braking mechanism, and a traveling mechanism are provided on the rear frame; the rear frame is connected to the air tank.

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