Intelligent welding device for pipe machining

Abstract

The application discloses a kind of intelligent welding device for pipe fitting processing, it is related to pipe fitting welding technical field, including three-jaw chuck, three clamping blocks are slidably arranged on the three-jaw chuck, the clamping surface of the clamping block is provided with clamping table, cooling cavity is opened in the inside of the clamping block, a plurality of left baffle and right baffle are fixed in the inside of the cooling cavity, the left baffle and the right baffle three side surface are pasted with the inner wall of the cooling cavity, the left baffle and the right baffle are alternatively staggered arrangement along the cooling cavity height direction, the left baffle extends from one side of the cooling cavity to the middle part of cavity, the right baffle extends from the other side of the cooling cavity to the middle part of cavity, adjacent the left baffle, the right baffle is staggered with each other, and does not contact each other, and the fluid passage of meandering return is formed in the inside of the cooling cavity.The application reduces pipe fitting welding deformation.

Description

Technical Field

[0001] This invention relates to the field of pipe welding technology, specifically to an intelligent welding device for pipe processing. Background Technology

[0002] Pipe fittings are widely used in oil and gas transportation, chemical fluids, HVAC, pressure vessels, hydraulic pipelines and other fields. The circumferential welding of pipe fittings is the core process of pipe fitting processing. The quality of weld formation and coaxial docking accuracy directly determine the pressure bearing capacity and service life of the pipeline system.

[0003] Currently, pipe fitting welding is mainly divided into two categories: manual welding and traditional automated welding. Manual welding relies on the welder's experience, is labor-intensive, operates in harsh environments, and the welding quality is significantly affected by the worker's condition and skill level. It is prone to defects such as incomplete penetration, porosity, slag inclusions, and uneven weld reinforcement, resulting in a high rate of rework after flaw detection. This makes it difficult to meet the needs of large-scale, standardized pipe fitting processing and production.

[0004] Existing automated pipe welding equipment typically uses a fixed chuck to hold the pipe and a preset program to drive the welding torch to complete the circumferential weld. When using an internal expansion clamping scheme, the clamping blocks are prone to thermal expansion due to welding heat conduction and radiation, causing drastic fluctuations in clamping force. Thin-walled pipes are easily squeezed out of roundness and deformed, or gaps may appear between the clamping blocks and the pipe wall due to the expansion of the pipe due to heat, causing the pipe to rotate and slip, and the coaxiality of the joint to be misaligned, further aggravating weld formation defects. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent welding device for pipe fitting processing to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an intelligent welding device for pipe processing, including a worktable, a clamping mechanism on the worktable for fixing pipes, the clamping mechanism including a main support assembly and a secondary support assembly, both the main support assembly and the secondary support assembly are provided with a three-jaw chuck, three clamping blocks are slidably arranged on the three-jaw chuck, the clamping surface of the clamping blocks is provided with a clamping platform, a cooling cavity is opened inside the clamping block, a number of left and right partitions are fixed at intervals inside the cooling cavity, the three sides of the left and right partitions are in contact with the inner wall of the cooling cavity, the left and right partitions are alternately staggered along the height direction of the cooling cavity, the left partition extends from one side of the cooling cavity to the middle of the cavity, the right partition extends from the other side of the cooling cavity to the middle of the cavity, adjacent left and right partitions are staggered and do not contact each other, forming a meandering fluid channel inside the cooling cavity.

[0007] According to the above technical solution, movable plates are slidably arranged on the left and right partitions. Corresponding limiting grooves are opened on the movable plates to cooperate with the left and right partitions. The movable plates divide the internal space of the cooling cavity into a front chamber and a rear chamber, wherein the front chamber is close to the clamping platform.

[0008] According to the above technical solution, a first upper flow channel and a first lower flow channel are respectively opened on the upper and lower sides of the front chamber of the clamping block, and a second upper flow channel and a second lower flow channel are respectively opened on the upper and lower sides of the rear chamber of the clamping block.

[0009] According to the above technical solution, a flow pump is connected to the first upper flow channel and the first lower flow channel via a hose. The input end of the flow pump is connected to a storage tank. A first three-way valve is installed on the hose connecting the flow pump and the first upper flow channel. The remaining port of the first three-way valve is connected to the first lower flow channel. A second three-way valve is installed between the first three-way valve and the first upper flow channel. The remaining port of the second three-way valve is connected to the storage tank. A third three-way valve is installed between the first three-way valve and the first lower flow channel. The remaining port of the third three-way valve is connected to the storage tank.

[0010] According to the above technical solution, the connection and arrangement of the second upper flow channel and the second lower flow channel are consistent with those of the first upper flow channel and the first lower flow channel.

[0011] According to the above technical solution, a first temperature sensor is provided on the inner wall of the front chamber, and a second temperature sensor is provided on the inner wall of the rear chamber. The first and second temperature sensors are configured as strip structures, which can be used to test the coolant temperature in the front and rear chambers at different heights.

[0012] According to the above technical solution, the clamping block is a stepped clamping claw, and the lower edge of the clamping block is arranged with continuous meshing teeth. The meshing teeth mesh with the drive bevel teeth of the three-jaw chuck to achieve radial synchronous feeding. The bottom of the clamping block is provided with a positioning slot to achieve assembly limit. The upper part of the clamping block extends to form a multi-level stepped end face, and the surface of the clamping table is provided with several strip-shaped anti-slip teeth at intervals.

[0013] According to the above technical solution, the main support component includes a fixed box, a main shaft is installed inside the fixed box, a rotary motor is connected to one end of the main shaft, a three-jaw chuck is installed at the other end of the main shaft, and a control box is installed on the upper side of the fixed box.

[0014] According to the above technical solution, the secondary support component includes a first slide rail seat, a first screw is rotatably mounted on the first slide rail seat, one end of the first screw is connected to a first driver, a first sliding seat is slidably mounted on the first slide rail seat, the first sliding seat is threadedly engaged with the first screw, a support seat is mounted on the first sliding seat corresponding to the main shaft, and a three-jaw chuck is rotatably mounted on the support seat.

[0015] According to the above technical solution, a welding mechanism is provided on one side of the main support component. The welding mechanism includes an x-axis moving module, a y-axis moving module, a z-axis moving module, and a welding gun. The y-axis moving module is installed on the drive end of the x-axis moving module, the z-axis moving module is installed on the drive end of the y-axis moving module, and the welding gun is installed on the drive end of the z-axis moving module.

[0016] According to the above technical solution, the x-axis moving module includes a second slide rail seat, a second screw is rotatably mounted on the second slide rail seat, one end of the second screw is connected to a second driver, and a second sliding seat is slidably mounted on the second slide rail seat, with the second sliding seat threadedly engaged with the second screw.

[0017] According to the above technical solution, the y-axis moving module includes a third slide rail seat, which is fixed on the second slide seat. A third screw is rotatably mounted on the third slide rail seat. One end of the third screw is connected to a third driver. The third slide seat is slidably mounted on the third slide rail seat, and the third slide seat and the third screw are threaded together.

[0018] According to the above technical solution, the z-axis moving module includes a fourth screw, which is rotatably mounted on a third sliding seat. One end of the fourth screw is connected to a fourth driver, and a support frame is threaded onto the fourth screw. A fixed frame is hinged to the other end of the support frame. The welding gun is mounted on the fixed frame, and a fixed knob is provided on the fixed frame. A strip slide rail is provided on the third sliding seat, and the support frame slides in cooperation with the strip slide rail.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, the cooling chamber of the clamping block is divided into a front chamber near the clamping table and a rear chamber away from the clamping table by a movable plate. The movable plate is driven to slide by the hydraulic pressure difference between the front and rear chambers, which can adaptively adjust the volume of the front chamber according to the welding heat input. Under high heat input conditions, the volume of the front chamber is increased to improve the heat capacity of the coolant near the heat source and enhance the heat absorption effect; under low heat input conditions, the volume of the front chamber is reduced to avoid excessive cooling and the generation of thermal stress at the clamping position of the pipe fitting, thereby reducing the welding deformation of the pipe fitting.

[0020] The front and rear chambers are each equipped with independent coolant circulation pipelines, which, with the aid of a three-way valve, enable bidirectional coolant circulation in both forward and reverse directions. By switching the fluid flow direction, the coolant flushing path within the chambers is altered. Combined with the meandering, reversible flow path formed by the left and right baffles, dead zones in heat exchange within the cooling chambers are effectively eliminated, improving the uniformity of the temperature field on the clamping blocks. Simultaneously, the three-way valve features a bypass channel, allowing for flexible adjustment of the coolant flow rate and enabling multi-level control of cooling intensity. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the welding device of the present invention; Figure 2 This is a schematic diagram of the structure of the clamping block of the present invention; Figure 3 This is a cross-sectional view of the clamping block of the present invention; Figure 4 This is a cross-sectional view of the first upper flow channel and the second upper flow channel of the present invention; Figure 5 This is a cross-sectional view of the first and second downflow channels of the present invention; Figure 6 This is a schematic diagram of the structure of the left partition, right partition, and movable plate of the present invention; Figure 7 This is a schematic diagram of the structure of the movable plate of the present invention; Figure 8 This is a schematic diagram of the cooling path of the clamping block of the present invention; Figure 9 This is a schematic diagram of the structure of the secondary support component of the present invention; Figure 10 This is a schematic diagram of the welding mechanism of the present invention; Figure 11 This is a schematic diagram of the structure of the z-axis moving module of the present invention.

[0022] In the diagram: 1. Worktable; 2. Main support assembly; 21. Fixed box; 22. Spindle; 23. Rotary motor; 24. Control box; 3. Secondary support assembly; 31. First slide rail seat; 32. First screw; 33. First driver; 34. First sliding seat; 35. Support seat; 4. Three-jaw chuck; 41. Clamping block; 411. Left partition; 412. Right partition; 413. Movable plate; 4131. Limiting groove; 414. Front chamber; 415. Rear chamber; 416. First upper flow channel; 417. First lower flow channel; 418. Second upper flow channel; 419. Second lower flow channel; 42. Clamping table; 421. Strip 43. Anti-slip teeth; 44. Flow pump; 45. Liquid storage tank; 46. First three-way valve; 47. Second three-way valve; 48. Third three-way valve; 49. First temperature sensor; 50. Second temperature sensor; 51. Welding mechanism; 52. Welding gun; 52. Second slide rail seat; 521. Second screw; 522. Second actuator; 523. Second sliding seat; 53. Third slide rail seat; 531. Third screw; 532. Third actuator; 533. Third sliding seat; 54. Fourth screw; 541. Fourth actuator; 542. Support frame; 543. Fixing frame; 544. Fixing knob; 545. Strip slide rail. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-11 This invention provides a technical solution: an intelligent welding device for pipe fitting processing, comprising a worktable 1, on which a clamping mechanism is provided for fixing the pipe fitting. The clamping mechanism includes a main support assembly 2 and a secondary support assembly 3, both of which are equipped with a three-jaw chuck 4. Three clamping blocks 41 are slidably disposed on the three-jaw chuck 4. The clamping surfaces of the clamping blocks 41 are provided with clamping platforms 42. A cooling chamber is formed inside the clamping blocks 41. The cooling chamber is fixed with several left partitions 411 and right partitions 412. The three sides of the left partitions 411 and right partitions 412 are attached to the inner wall of the cooling chamber. The left partitions 411 and right partitions 412 are arranged alternately and staggered along the height direction of the cooling chamber. The left partition 411 extends from one side of the cooling chamber to the middle of the chamber, and the right partition 412 extends from the other side of the cooling chamber to the middle of the chamber. The adjacent left partitions 411 and right partitions 412 are intersected and do not contact each other, forming a meandering fluid channel inside the cooling chamber.

[0025] like Figure 6 As shown, movable plates 413 are slidably arranged on the left partition 411 and the right partition 412. The movable plates 413 are provided with corresponding limiting grooves 4131 to cooperate with the left partition 411 and the right partition 412. The movable plates 413 divide the internal space of the cooling cavity into a front chamber 414 and a rear chamber 415, wherein the front chamber 414 is close to the clamping platform 42.

[0026] like Figure 4 , Figure 5 As shown, the clamping block 41 has a first upper flow channel 416 and a first lower flow channel 417 respectively on the upper and lower sides of the front chamber 414, and the clamping block 41 has a second upper flow channel 418 and a second lower flow channel 419 respectively on the upper and lower sides of the rear chamber 415.

[0027] like Figure 8As shown, a flow pump 43 is connected to the first upper flow channel 416 and the first lower flow channel 417 via a hose. The input end of the flow pump 43 is connected to a storage tank 44. A first three-way valve 45 is installed on the hose connecting the flow pump 43 and the first upper flow channel 416. The remaining port of the first three-way valve 45 is connected to the first lower flow channel 417. A second three-way valve 46 is installed between the first three-way valve 45 and the first upper flow channel 416. The remaining port of the second three-way valve 46 is connected to the storage tank 44. A third three-way valve 47 is installed between the first three-way valve 45 and the first lower flow channel 417. The remaining port of the third three-way valve 47 is connected to the storage tank 44.

[0028] The connection settings of the second upper flow channel 418 and the second lower flow channel 419 are the same as those of the first upper flow channel 416 and the first lower flow channel 417.

[0029] A first temperature sensor 48 is provided on the inner wall of the front chamber 414, and a second temperature sensor 49 is provided on the inner wall of the rear chamber 415. The first temperature sensor 48 and the second temperature sensor 49 are arranged in a strip structure, which can be used to test the coolant temperature in the front chamber 414 and the rear chamber 415 at different heights.

[0030] In actual operation, the first three-way valve 45 is used to control the flow of coolant from the first upper flow channel 416 or the first lower flow channel 417 into the front chamber 414, while the second three-way valve 46 and the third three-way valve 47 are used to control the input and output direction of the first upper flow channel 416 or the first lower flow channel 417. When the flow pump 43 inputs coolant into the first upper flow channel 416, the coolant passes through the liquid passage in the cooling chamber and is transported back to the reservoir 44 from the first lower flow channel 417. Conversely, when the flow pump 43 inputs coolant into the first lower flow channel 417, the coolant is transported back to the reservoir 44 from the first upper flow channel 416.

[0031] The following is a supplementary explanation based on the above structure: The liquid storage tank 44 has a built-in heat exchange module for controlling the temperature of the coolant. During operation, when a pressure difference is formed between the coolant in the front chamber 414 and the rear chamber 415, the pressure difference will act on the two sides of the movable plate 413, causing the movable plate 413 to move. After the movable plate 413 slides, the separation boundary between the front chamber 414 and the rear chamber 415 changes accordingly, realizing the adaptive adjustment of the volume of the front chamber 414 and the rear chamber 415. At the same time, the volume of the front chamber 414 and the rear chamber 415 can be adjusted by actively adjusting the hydraulic pressure difference through the flow pump 43.

[0032] Furthermore, the front chamber 414 is adjacent to the clamping platform 42 and belongs to the heat exchange zone near the heat source, directly receiving the welding heat conducted by the fittings; the rear chamber 415 is far from the clamping contact surface and serves as a buffer heat storage area. If it were a single integral chamber, the coolant volume would be fixed, making it impossible to specifically adjust the total amount of coolant on the side closer to the heat source; after being divided into two chambers, the volume of the front chamber 414 can be dynamically adjusted by sliding the movable plate 413: when welding with high heat input, the volume of the front chamber 414 is expanded to increase the heat capacity of the coolant near the heat source and enhance the heat absorption capacity; under low heat conditions, the volume of the front chamber 414 is reduced to decrease the amount of coolant used and avoid excessive cooling that could generate thermal stress.

[0033] In one embodiment, such as Figure 2 As shown, the clamping block 41 is a stepped clamping claw. The lower edge of the clamping block 41 is arranged with continuous meshing teeth, which mesh with the drive bevel teeth of the three-jaw chuck 4 to achieve radial synchronous feeding. The bottom of the clamping block 41 is provided with a positioning slot to achieve assembly limit. The upper part of the clamping block 41 extends to form a multi-level stepped end face, and the surface of the clamping table 42 is provided with several strip-shaped anti-slip teeth 421 at intervals.

[0034] like Figure 1 As shown, the main support assembly 2 includes a fixed box 21, a main shaft 22 is installed inside the fixed box 21, a rotary motor 23 is connected to one end of the main shaft 22, a three-jaw chuck 4 is installed at the other end of the main shaft 22, and a control box 24 is installed on the upper side of the fixed box 21.

[0035] like Figure 9 As shown, the secondary support assembly 3 includes a first slide rail seat 31, a first screw 32 rotatably mounted on the first slide rail seat 31, a first driver 33 connected to one end of the first screw 32, a first sliding seat 34 slidably mounted on the first slide rail seat 31, the first sliding seat 34 being threadedly engaged with the first screw 32, a support seat 35 being mounted on the first sliding seat 34 corresponding to the main shaft 22, and a three-jaw chuck 4 rotatably mounted on the support seat 35.

[0036] In actual operation, the rotary motor 23 controls the installed three-jaw chuck 4 through the spindle 22. The control box 24 has a built-in electrical control module that receives signals from the whole machine control system and completes the start / stop, speed adjustment, and direction control of the rotary motor 23. The main support assembly 2 serves as the main clamping structure and can be used for clamping the ends of bent and straight pipe fittings. If the length of the welded pipe fitting is too long or if the pipe fitting needs to be butt welded, the secondary support assembly 3 is used to assist in clamping the other end of the pipe fitting. The first screw 32 is rotated by the first driver 33, which realizes the movement of the first sliding seat 34 on the first slide rail seat 31, thereby adjusting the distance between the two three-jaw chucks 4.

[0037] like Figure 10As shown, a welding mechanism 5 is provided on one side of the main support component 2. The welding mechanism 5 includes an x-axis moving module, a y-axis moving module, a z-axis moving module, and a welding gun 51. The y-axis moving module is installed on the drive end of the x-axis moving module, the z-axis moving module is installed on the drive end of the y-axis moving module, and the welding gun 51 is installed on the drive end of the z-axis moving module.

[0038] Optionally, the x-axis moving module includes a second slide rail seat 52, on which a second screw 521 is rotatably mounted. One end of the second screw 521 is connected to a second driver 522. A second sliding seat 523 is slidably mounted on the second slide rail seat 52, and the second sliding seat 523 is threadedly engaged with the second screw 521.

[0039] The y-axis moving module includes a third slide rail seat 53, which is fixed on the second slide seat 523. A third screw 531 is rotatably mounted on the third slide rail seat 53. One end of the third screw 531 is connected to a third driver 532. A third slide seat 533 is slidably mounted on the third slide rail seat 53, and the third slide seat 533 is threadedly engaged with the third screw 531.

[0040] like Figure 11 As shown, the z-axis moving module includes a fourth screw 54, which is rotatably mounted on a third sliding seat 533. One end of the fourth screw 54 is connected to a fourth driver 541, and a support frame 542 is threaded onto the fourth screw 54. The other end of the support frame 542 is hinged to a fixed frame 543. The welding gun 51 is mounted on the fixed frame 543, and a fixed knob 544 is provided on the fixed frame 543. A strip slide rail 545 is provided on the third sliding seat 533, and the support frame 542 slides in cooperation with the strip slide rail 545.

[0041] In actual operation, the x-axis movement module, y-axis movement module, and z-axis movement module are used to control the movement of the welding gun 51 in the three directions of x, y, and z. The fixed frame 543 can rotate at a certain angle relative to the support frame 542, and the fixing knob 544 is used for fixing.

[0042] The cooling method for clamping block 41 is as follows: Step 1: Cooling circulation is initiated, establishing the basic cooling flow channel. The coolant in the reservoir 44 is pre-regulated to the target reference temperature by the internal heat exchange module; the flow pump 43 outputs coolant, which, in conjunction with the first three-way valve 45, switches the direction of medium flow, realizing bidirectional circulation in the front chamber 414: During forward circulation, the coolant enters the top of the front chamber 414 from the first upper flow channel 416, flows from top to bottom along the meandering, reversible fluid channel formed by the left partition 411 and the right partition 412, and finally flows back to the reservoir 44 through the first lower flow channel 417; during reverse circulation, the coolant is sent to the bottom of the front chamber 414 from the first lower flow channel 417, completes heat exchange from bottom to top, and then flows back through the first upper flow channel 416. The rear chamber 415 adopts the same bidirectional circulation control logic based on the second upper flow channel 418 and the second lower flow channel 419. The second three-way valve 46 and the third three-way valve 47 can open the bypass branch and adjust the flow rate of coolant entering the cavity to achieve coarse adjustment of cooling intensity.

[0043] Step Two: Temperature Signal Acquisition and Welding Condition Identification. During welding, the first temperature sensor 48 continuously acquires the coolant temperature at different heights in the front chamber 414, obtaining the real-time temperature of the near-heat source area and the vertical temperature gradient; the second temperature sensor 49 simultaneously acquires the coolant temperature across the entire rear chamber 415. The control system compares the data from the two sets of sensors to obtain the real-time temperature difference between the front chamber 414 and the rear chamber 415. If the first temperature sensor 48 detects a slight increase in temperature, a small temperature difference between the upper and lower parts of the cavity, and a low temperature difference between the front and rear chambers 415, it is determined that the current condition is a low heat input condition (spot welding, thin-walled pipe welding, welding intermittent stage). If the temperature of the first temperature sensor 48 continues to rise, the temperature difference in the vertical direction increases significantly, and the temperature difference between the front and rear chambers continues to widen, it is determined to be a high heat input condition such as continuous thick-walled pipe welding. If the temperature at a local measuring point of the first temperature sensor 48 suddenly rises or the temperature distribution within the same cavity is uneven, it is determined that a heat exchange hotspot has been generated locally in the clamping block 41.

[0044] Step 3: Adaptive adjustment of chamber volume based on temperature data. The control system adjusts the coolant supply pressure of the front chamber 414 circuit and the rear chamber 415 circuit according to the temperature difference signal fed back by the sensor. This creates a hydraulic pressure difference on both sides of the movable plate 413, driving the movable plate 413 to slide along the left partition 411 and right partition 412, dynamically changing the volume ratio of the front chamber 414 and the rear chamber 415: When a high heat input condition is identified, the coolant supply pressure of the front chamber 414 is increased, pushing the movable plate 413 towards the rear chamber 415, expanding the volume of the front chamber 414, increasing the total heat capacity of the coolant near the heat source area, and enhancing heat absorption capacity; when a low heat input condition is identified, the pressure difference between the front chamber 414 and the rear chamber 415 is reduced, causing the movable plate 413 to move slightly towards the front chamber 414, reducing the volume of the front chamber 414, avoiding excessive cooling of the coolant, and preventing deformation due to large temperature difference stress at the pipe clamping parts.

[0045] Step 4: Dynamic switching of flow direction to eliminate local heat exchange hotspots. When the first temperature sensor 48 detects a local high-temperature measuring point in the front chamber 414, it is determined that there is a dead zone of coolant stagnation in the chamber. The control system manipulates the first three-way valve 45 to switch the direction of coolant inflow and outflow, changing the mainstream flushing path inside the front chamber 414; at the same time, it slightly adjusts the pressure difference between the two chambers and moves the movable plate 413 slightly to change the effective flow cross-section of the fluid channel, disperse the local high-temperature area, and equalize the temperature field inside the front chamber 414.

[0046] Step 5: Heat Penetration Risk Warning and Staged Cooling. If the second temperature sensor 49 detects a continuous rise in temperature and the temperature difference between the front and rear chambers gradually decreases, it indicates that a large amount of heat is penetrating the base of the clamping block 41 and continuously being conducted into the three-jaw chuck 4. The system simultaneously increases the coolant circulation flow rate in the rear chamber 415, relying on the coolant in the rear chamber 415 to absorb the residual heat, forming a two-stage thermal barrier to prevent high-temperature damage to the internal meshing teeth and transmission structure of the three-jaw chuck 4; at the same time, it links with the heat exchange module inside the liquid storage tank 44 to further reduce the coolant reference temperature.

[0047] Step Six: Flexible Temperature Control During Welding Intermittent Phases. After welding is paused and heat input disappears, the temperature collected by the first temperature sensor 48 gradually decreases, and the temperature difference between the front and rear chambers continuously reduces. The control system reduces the output power of the flow pump 43, reduces the coolant circulation pressure, and reduces the overall cooling intensity to avoid thermal shock caused by a sudden drop in the temperature of the clamping block 41. After a long period of shutdown, a small flow rate circulation is maintained until the temperatures detected by the first temperature sensor 48 and the second temperature sensor 49 tend to be consistent, and then the cooling circulation is shut down.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent welding device for pipe fitting processing, comprising a workbench (1), characterized in that, The workbench (1) is equipped with a clamping mechanism for fixing the pipe fitting. The clamping mechanism includes a main support assembly (2) and a secondary support assembly (3). Both the main support assembly (2) and the secondary support assembly (3) are equipped with a three-jaw chuck (4). Three clamping blocks (41) are slidably arranged on the three-jaw chuck (4). The clamping surface of the clamping block (41) is provided with a clamping platform (42). A cooling cavity is opened inside the clamping block (41). Several left partitions (411) and right partitions (411) are fixed at intervals inside the cooling cavity. 412), the three sides of the left partition (411) and the right partition (412) are attached to the inner wall of the cooling cavity. The left partition (411) and the right partition (412) are arranged alternately and staggered along the height direction of the cooling cavity. The left partition (411) extends from one side of the cooling cavity to the middle of the cavity, and the right partition (412) extends from the other side of the cooling cavity to the middle of the cavity. The adjacent left partition (411) and the right partition (412) are staggered and do not contact each other, forming a meandering fluid channel inside the cooling cavity.

2. The intelligent welding device for pipe fitting processing according to claim 1, characterized in that, Movable plates (413) are slidably disposed on the left partition (411) and the right partition (412). The movable plates (413) are provided with corresponding limiting grooves (4131) to cooperate with the left partition (411) and the right partition (412). The movable plates (413) divide the internal space of the cooling chamber into a front chamber (414) and a rear chamber (415), wherein the front chamber (414) is close to the clamping platform (42).

3. The intelligent welding device for pipe fitting processing according to claim 2, characterized in that, The clamping block (41) is provided with a first upper flow channel (416) and a first lower flow channel (417) on the upper and lower sides of the front chamber (414), and the clamping block (41) is provided with a second upper flow channel (418) and a second lower flow channel (419) on the upper and lower sides of the rear chamber (415).

4. The intelligent welding device for pipe fitting processing according to claim 3, characterized in that, The first upper flow channel (416) and the first lower flow channel (417) are connected to a flow pump (43) via a hose. The input end of the flow pump (43) is connected to a storage tank (44). A first three-way valve (45) is provided on the hose connecting the flow pump (43) and the first upper flow channel (416). The remaining port of the first three-way valve (45) is connected to the first lower flow channel (417). A second three-way valve (46) is provided between the first three-way valve (45) and the first upper flow channel (416). The remaining port of the second three-way valve (46) is connected to the storage tank (44). A third three-way valve (47) is provided between the first three-way valve (45) and the first lower flow channel (417). The remaining port of the third three-way valve (47) is connected to the storage tank (44). The connection configuration of the second upper flow channel (418) and the second lower flow channel (419) is consistent with that of the first upper flow channel (416) and the first lower flow channel (417).

5. The intelligent welding device for pipe fitting processing according to claim 4, characterized in that, The inner wall of the front chamber (414) is provided with a first temperature sensor (48), and the inner wall of the rear chamber (415) is provided with a second temperature sensor (49). The first temperature sensor (48) and the second temperature sensor (49) are configured as strip structures, which can be used to test the coolant temperature in the front chamber (414) and the rear chamber (415) at different heights.

6. The intelligent welding device for pipe fitting processing according to claim 1, characterized in that, The main support assembly (2) includes a fixed box (21), a main shaft (22) is installed inside the fixed box (21), a rotary motor (23) is connected to one end of the main shaft (22), a three-jaw chuck (4) is installed at the other end of the main shaft (22), and a control box (24) is installed on the upper side of the fixed box (21).

7. The intelligent welding device for pipe fitting processing according to claim 1, characterized in that, The secondary support assembly (3) includes a first slide rail seat (31), on which a first screw (32) is rotatably mounted. One end of the first screw (32) is connected to a first driver (33). A first sliding seat (34) is slidably mounted on the first slide rail seat (31). The first sliding seat (34) is threadedly engaged with the first screw (32). A support seat (35) is mounted on the first sliding seat (34) corresponding to the main shaft (22). A three-jaw chuck (4) is rotatably mounted on the support seat (35).

8. The intelligent welding device for pipe fitting processing according to claim 6, characterized in that, A welding mechanism (5) is provided on one side of the main support component (2). The welding mechanism (5) includes an x-axis moving module, a y-axis moving module, a z-axis moving module, and a welding gun (51). The y-axis moving module is installed at the drive end of the x-axis moving module, the z-axis moving module is installed at the drive end of the y-axis moving module, and the welding gun (51) is installed at the drive end of the z-axis moving module.

9. The intelligent welding device for pipe fitting processing according to claim 8, characterized in that, The x-axis moving module includes a second slide rail seat (52), a second screw (521) is rotatably mounted on the second slide rail seat (52), one end of the second screw (521) is connected to a second driver (522), and a second sliding seat (523) is slidably mounted on the second slide rail seat (52), and the second sliding seat (523) is threadedly engaged with the second screw (521); The y-axis moving module includes a third slide rail seat (53), which is fixed on the second slide seat (523). A third screw (531) is rotatably mounted on the third slide rail seat (53). One end of the third screw (531) is connected to a third driver (532). The third slide seat (533) is slidably mounted on the third slide rail seat (53), and the third slide seat (533) is threadedly engaged with the third screw (531).

10. The intelligent welding device for pipe fitting processing according to claim 9, characterized in that, The z-axis moving module includes a fourth screw (54), which is rotatably mounted on the third sliding seat (533). One end of the fourth screw (54) is connected to a fourth driver (541), and a support frame (542) is threaded onto the fourth screw (54). The other end of the support frame (542) is hinged to a fixed frame (543). The welding gun (51) is mounted on the fixed frame (543), and a fixed knob (544) is provided on the fixed frame (543). A strip slide rail (545) is provided on the third sliding seat (533), and the support frame (542) slides in cooperation with the strip slide rail (545).

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