A billet welding apparatus with a weld shaping function

Abstract

The application discloses a billet welding equipment with a welding seam shaping function, and relates to the technical field of welding. The billet welding equipment comprises a numerical control machine tool, a welding head is arranged on one side of the numerical control machine tool, a sliding rail is fixedly connected to one side of the numerical control machine tool, a clamping and shaping mechanism is arranged on the top of the sliding rail, and a hollow cylindrical billet is arranged in the clamping and shaping mechanism. When the clamping and shaping mechanism is used, two hollow cylindrical billets are placed between two heaters, a first moving block is started, the heaters clamp the two hollow cylindrical billets, after clamping is completed, an L-shaped moving block is started to move stably along the running path of the sliding rail to the lower side of the welding head to wait for welding, at this time, the numerical control machine tool is started to automatically lower the welding head and perform welding work, and the welding work is completed.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to a steel billet welding equipment with weld seam shaping function. Background Technology

[0002] Welding technology is a metal processing method that uses heating or pressure to join materials. It includes three main categories: fusion welding, pressure welding, and brazing. It is widely used in both metallic and non-metallic materials. Its physical essence is to bring the interatomic spacing of the material surface closer to 0.3-0.5 nanometers and overcome surface obstacles through metallic bonding.

[0003] The welding equipment with weld seam tracking function described in patent application CN205660281U is specifically a welding equipment with weld seam tracking function, which includes a welding device and a weld seam tracking device. The welding device includes a welding power source and a welding torch connected to the welding power source. The welding power source has a main control module and a current and voltage sampling device connected to each other. The input end of the current and voltage sampling device is connected to the input end of the welding torch. The weld seam tracking device includes a welding torch position adjustment actuator and a motor control mechanism connected to each other. The motor control mechanism is connected to the main control module of the welding power source. The welding torch is mounted on the welding torch position adjustment actuator.

[0004] Traditional automated processing of steel billets requires manual repeated turning of the workpiece or the use of multi-axis linkage equipment to achieve full-circumference welding during the welding stage. This is not only inefficient but also poses safety hazards. The high cost and complex maintenance of multi-directional welding equipment further restricts its application to small and medium-sized enterprises. Moreover, post-weld shaping requires transferring the workpiece to specialized grinding equipment for secondary clamping. Accumulated positioning errors lead to a decrease in processing accuracy, while increasing production cycle and labor costs. Rotation or vibration can easily cause loosening, affecting welding quality. Weld bead treatment requires additional processes or specialized equipment, further exacerbating the fragmentation of the processing flow and cost pressures. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a steel billet welding device with weld seam shaping function, thereby achieving the goal of solving the aforementioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a steel billet welding equipment with weld seam shaping function, including a CNC machine tool, a welding head is provided on one side of the CNC machine tool, a slide rail is fixedly connected to one side of the CNC machine tool, a clamping and shaping mechanism is provided on the top of the slide rail, and a hollow cylindrical steel billet is provided inside the clamping and shaping mechanism;

[0007] The clamping and shaping mechanism includes:

[0008] An L-shaped movable block is slidably connected to a slide rail. A base is fixedly connected to the top of the L-shaped movable block. A sliding groove is provided on the top of the base, and a first movable block is slidably connected to the top of the sliding groove.

[0009] A heater, which is fixedly connected to a first movable block, has a second rotating shaft inside the heater, and a heat-conducting cylinder is fixedly connected to the outer wall of the second rotating shaft. The outer wall of the heat-conducting cylinder is rotatably connected to one side of the heater.

[0010] Preferably, a driver is slidably connected to one side of the heater, and a first rotating shaft is provided inside the driver. The first rotating shaft is a circular cylindrical structure.

[0011] Preferably, a grinding cylinder is rotatably connected to the outer wall of the first rotating shaft, a pawl is fixedly connected to the outer wall at the center of the first rotating shaft, and a ratchet is fixedly connected to the inner wall of the grinding cylinder.

[0012] Preferably, a connecting block is fixedly connected to the bottom of the driver, a fixing block is slidably connected to the outer wall of the connecting block, and an internal spring is fixedly connected to the connecting block and the fixing block.

[0013] Preferably, limit plates are fixedly connected to both sides of the driver, and limit blocks are fixedly connected to both sides of the heater, with the limit blocks in contact with the limit plates.

[0014] Preferably, an auxiliary cleaning mechanism is provided at one end of the heat-conducting cylinder. The auxiliary cleaning mechanism includes a high-temperature resistant elastic rope. Both ends of the high-temperature resistant elastic rope are fixedly connected to the outer wall of the heat-conducting cylinder. A cylindrical groove is formed on the inner wall of one end of the heat-conducting cylinder.

[0015] Preferably, a fan blade is fixedly connected to the inner wall of the cylindrical groove, an exhaust groove is provided on the outer wall of the heat-conducting cylinder, a high-temperature resistant elastic cloth is fixedly connected to one side of the driver, and a groove is provided on the top of the high-temperature resistant elastic cloth.

[0016] Preferably, the interior of the cylindrical groove is connected to the interior of the exhaust groove, the heat-conducting cylinder passes through both ends of the cylindrical groove, and the exhaust groove is a long strip-shaped groove.

[0017] This invention provides a steel billet welding device with weld seam shaping function. It has the following beneficial effects:

[0018] 1. By setting up a clamping and shaping mechanism, the present invention enables the welding of hollow cylindrical steel billets without shifting the welding head during the welding process. It eliminates the need for tedious manual flipping operations and the use of costly multi-directional welding equipment, while still achieving the desired welding effect.

[0019] 2. By setting up a clamping and shaping mechanism, the weld beads on the outer wall of the hollow cylindrical steel billet are simultaneously ground by the grinding cylinder during rotation. After welding, the hollow cylindrical steel billet does not need to be removed. After welding, the entire set of welding and grinding and shaping operations can be completed without changing equipment or manual intervention, which improves work efficiency and significantly reduces labor costs and equipment investment.

[0020] 3. By setting up a clamping and shaping mechanism, the present invention utilizes a heat-conducting cylinder to further transfer heat to the hollow cylindrical steel billet. At the same time, the rotating heat-conducting cylinder can fully contact the outer wall of the hollow cylindrical steel billet during rotation, changing the original linear contact between the heat-conducting cylinder and the hollow cylindrical steel billet into a surface-type uniform heating, thereby ensuring a multi-party synergistic heating effect and further ensuring the uniformity of heating.

[0021] 4. By setting up a clamping and shaping mechanism, the residue attached to the weld bead is drawn into the cylindrical groove by the rotation of the fan blade driven by the heat-conducting cylinder and flows out to the other end of the heat-conducting cylinder with the airflow. This achieves the goal that the grinding accuracy will not decrease or the surface will be scratched due to the adhesion of steel chips during the grinding and shaping process.

[0022] 5. By setting up a clamping and shaping mechanism, the present invention enables the originally static air to circulate and flow, allowing the air to flow evenly over every part of the surface of the hollow cylindrical steel billet. This prevents stress concentration or micro-cracks from forming on the pipe wall and weld seam due to temperature differences during the grinding process of the hollow cylindrical steel billet, ensuring that the weld seam structure is uniform and dense. At the same time, the hot airflow can also accelerate the desorption and blowing away of residual steel chips.

[0023] 6. By setting up a clamping and shaping mechanism, the air pressure discharged through the end of the cylindrical groove increases, achieving a stronger directional removal capability for steel chips and effectively improving the cleanliness of the weld area. The periodic opening and closing of the exhaust groove forms an intermittent strong airflow impact, further enhancing the peeling effect on stubborn steel chips. During grinding, some steel chips are pushed onto the high-temperature resistant elastic cloth by the grinding cylinder and partially collected by the high-temperature resistant elastic cloth. At the same time, the concave and convex texture on the surface of the high-temperature resistant elastic cloth can scrape the remaining steel chips on the hollow cylindrical steel billet into the concave surface for cleaning, thereby further improving the surface finish of the hollow cylindrical steel billet. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the clamping and shaping mechanism of the present invention. Figure 1 ;

[0026] Figure 3 This is a motion diagram of the clamping and shaping mechanism of the present invention;

[0027] Figure 4 This is a schematic diagram of the clamping and shaping mechanism of the present invention. Figure 2 ;

[0028] Figure 5 This is a schematic diagram of the clamping and shaping mechanism of the present invention. Figure 3 ;

[0029] Figure 6 This is a bottom view schematic diagram of the clamping and shaping mechanism of the present invention;

[0030] Figure 7 For the present invention Figure 4 Enlarged view of point A;

[0031] Figure 8 This is a schematic diagram of the auxiliary cleaning mechanism of the present invention;

[0032] Figure 9 For the present invention Figure 4 Enlarged view of point B.

[0033] In the diagram: 1. CNC machine tool; 2. Welding head; 3. Clamping and shaping mechanism; 301. L-shaped moving block; 302. Base; 303. Sliding groove; 304. First moving block; 305. Heater; 306. Driver; 307. First rotating shaft; 308. Grinding cylinder; 309. Second rotating shaft; 310. Heat conducting cylinder; 311. Connecting block; 312. Fixing block; 313. Limiting block; 314. Limiting plate; 4. Auxiliary cleaning mechanism; 401. High-temperature resistant elastic rope; 402. Fan blade; 403. Exhaust groove; 404. Cylindrical groove; 405. High-temperature resistant elastic cloth; 5. Slide rail; 6. Hollow cylindrical steel billet. Detailed Implementation

[0034] Example 1: Please refer to Figure 1-3 The present invention provides a technical solution: a steel billet welding equipment with weld seam shaping function, including a CNC machine tool 1, a welding head 2 is provided on one side of the CNC machine tool 1, a slide rail 5 is fixedly connected to one side of the CNC machine tool 1, a clamping and shaping mechanism 3 is provided on the top of the slide rail 5, and a hollow cylindrical steel billet 6 is provided inside the clamping and shaping mechanism 3.

[0035] Clamping and shaping mechanism 3 includes:

[0036] L-shaped moving block 301 is slidably connected to slide rail 5. A base 302 is fixedly connected to the top of L-shaped moving block 301. A sliding groove 303 is opened on the top of the base 302. A first moving block 304 is slidably connected to the top of sliding groove 303.

[0037] Heater 305 is fixedly connected to the first movable block 304. A second rotating shaft 309 is provided inside the heater 305. A heat-conducting cylinder 310 is fixedly connected to the outer wall of the second rotating shaft 309. The outer wall of the heat-conducting cylinder 310 is rotatably connected to one side of the heater 305.

[0038] In use, two hollow cylindrical steel billets 6 are placed between two heaters 305. The first moving block 304 is activated so that the heaters 305 clamp the two hollow cylindrical steel billets 6. After clamping, the L-shaped moving block 301 is activated to move smoothly along the running path of the slide rail 5 to the bottom of the welding head 2 to wait for welding. At this time, the CNC machine tool 1 is activated so that the welding head 2 automatically descends and performs the welding operation. The welding work is completed.

[0039] Example 2: Please refer to Figure 1-6 Based on Embodiment 1, the present invention provides a technical solution: a driver 306 is slidably connected to one side of the heater 305, and a first rotating shaft 307 is provided inside the driver 306. The first rotating shaft 307 is a circular cylindrical structure.

[0040] A grinding cylinder 308 is rotatably connected to the outer wall of the first rotating shaft 307. A pawl is fixedly connected to the outer wall at the center of the first rotating shaft 307, and a ratchet is fixedly connected to the inner wall of the grinding cylinder 308.

[0041] A connecting block 311 is fixedly connected to the bottom of the driver 306, and a fixing block 312 is slidably connected to the outer wall of the connecting block 311. An internal spring is fixedly connected to the connecting block 311 and the fixing block 312.

[0042] Limiting plates 314 are fixedly connected to both sides of the driver 306, and limiting blocks 313 are fixedly connected to both sides of the heater 305. The limiting blocks 313 are in contact with the limiting plates 314.

[0043] Before welding, the power supply inside the heater 305 is turned on, driving the second rotating shaft 309 to rotate the heat-conducting cylinder 310. Since one side of the heater 305 is an arc surface and the heat-conducting cylinder 310 is distributed along its arc surface, multiple heat-conducting cylinders 310 fit against the curved surface of the outer wall of the hollow cylindrical steel billet 6 through the arc distribution, so that the hollow cylindrical steel billet 6 is rotated. Thus, during the welding process, the welding head 2 can be moved to perform 360-degree welding operation on the hollow cylindrical steel billet 6. There is no need to use tedious manual flipping operation, nor is there a need to use high-cost multi-directional installation welding equipment for welding, and the required welding effect can be achieved.

[0044] During the welding process, the grinding cylinder 308 is in real-time contact with the surface of the hollow cylindrical steel billet 6. Because the first rotating shaft 307 and the grinding cylinder 308 are equipped with ratchet and pawl, the hollow cylindrical steel billet 6 can rotate under the direction of rotation driven by the heat-conducting cylinder 310. This is achieved by the ratchet and pawl inside the first rotating shaft 307 and the grinding cylinder 308 not engaging, which allows the grinding cylinder 308 to rotate without affecting the first rotating shaft 307. When the welding is completed, the driver 306 is started to drive the first rotating shaft 307 to rotate. The rotation direction of the first rotating shaft 307 at this time can be achieved by the ratchet and pawl between the grinding cylinder 308 and the first rotating shaft 307 engaging, thereby driving the grinding cylinder 308 to rotate at high speed and completing the grinding of the outer wall of the hollow cylindrical steel billet 6.

[0045] During grinding, the hollow cylindrical steel billet 6 is rotated in the opposite direction to that during welding by the heat-conducting cylinder 310. This allows the outer wall of the hollow cylindrical steel billet 6 and the grinding cylinder 308 to rotate in the same direction, completing effective grinding. During the rotation of the hollow cylindrical steel billet 6, the weld seam between the two hollow cylindrical steel billets 6 is located in the middle of the two heat-conducting cylinders 310. The protruding weld beads on the outer wall of the hollow cylindrical steel billet 6 will be embedded in the gap between the two heat-conducting cylinders 310. At this time, the protruding weld beads will exert a downward squeezing force on the grinding cylinder 308 and the driver 306, thereby connecting the weld seam. The connecting block 311 is pushed into the fixed block 312. The elastic force of the built-in springs inside the connecting block 311 and the fixed block 312 generates an upward thrust, which keeps the grinding cylinder 308 and the weld bead in a tight fit. This allows the weld bead on the outer wall of the hollow cylindrical steel billet 6 to be ground synchronously by the grinding cylinder 308 during rotation. After welding, the hollow cylindrical steel billet 6 does not need to be removed. After welding, no equipment replacement or manual intervention is required. The entire set of welding and grinding shaping operations can be completed, which improves work efficiency and significantly reduces labor costs and equipment investment.

[0046] As the weld beads are gradually ground down, the grinding cylinder 308, driver 306, and connecting block 311 will be pushed up synchronously by the large elastic force of the built-in spring until the weld beads on the outer wall of the hollow cylindrical steel billet 6 are ground down. At this time, the grinding cylinder 308, the first rotating shaft 307, and the driver 306 cannot continue to rise under the limit of the limit block 313 and the limit plate 314, so as not to cause excessive grinding of the weld of the hollow cylindrical steel billet 6.

[0047] During grinding, heater 305 is activated, heating its curved surface. Heater 305 heats the air in the gaps of the hollow cylindrical steel billet 6, which is then transferred to the surface of the hollow cylindrical steel billet 6, thus reducing the temperature difference between the hollow cylindrical steel billet 6 and the weld. This prevents cracks caused by high-frequency vibration due to temperature difference during grinding. At the same time, the heat from heater 305 is simultaneously transferred to heat-conducting cylinder 310, which further transfers heat to the hollow cylindrical steel billet 6. The rotating heat-conducting cylinder 310 can fully contact the outer wall of the hollow cylindrical steel billet 6 during rotation, changing the original linear contact between the heat-conducting cylinder 310 and the hollow cylindrical steel billet 6 into a uniform surface heating, thereby ensuring a multi-party synergistic heating effect and further ensuring the uniformity of heating.

[0048] Example 3: Please refer to Figure 1-9 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: an auxiliary cleaning mechanism 4 is provided at one end of the heat-conducting cylinder 310. The auxiliary cleaning mechanism 4 includes a high-temperature resistant elastic rope 401. Both ends of the high-temperature resistant elastic rope 401 are fixedly connected to the outer wall of the heat-conducting cylinder 310. A cylindrical groove 404 is provided on the inner wall of one end of the heat-conducting cylinder 310.

[0049] A fan blade 402 is fixedly connected to the inner wall of the cylindrical groove 404, an exhaust groove 403 is opened on the outer wall of the heat conduction cylinder 310, and a high-temperature resistant elastic cloth 405 is fixedly connected to one side of the driver 306. The top of the high-temperature resistant elastic cloth 405 is provided with a groove.

[0050] The interior of the cylindrical groove 404 is connected to the interior of the exhaust groove 403. The heat-conducting cylinder 310 passes through both ends of the cylindrical groove 404, and the exhaust groove 403 is a long strip-shaped groove.

[0051] During grinding, a large amount of steel chips are generated. These steel chips are carried away by the airflow generated by the rotation of the grinding cylinder 308 and scattered in all directions. The remaining steel chips attached to the weld surface will affect the accuracy of further grinding. When the hollow cylindrical steel billet 6 and the weld bead are rotated, the surface of the weld bead is scraped by the high temperature resistant elastic rope 401. The residue attached to the weld bead is sucked into the cylindrical groove 404 by the rotation of the fan blade 402 driven by the heat conduction cylinder 310 and flows out to the other end of the heat conduction cylinder 310 with the airflow. Thus, during the grinding and shaping process, the grinding accuracy will not decrease or the surface will be scratched due to the adhesion of steel chips.

[0052] When the heat-conducting cylinder 310 rotates the exhaust groove 403 to face the hollow cylindrical steel billet 6, the air drawn into the cylindrical groove 404 is rapidly heated by the heat-conducting cylinder 310 itself. Since the pores of the exhaust groove 403 are smaller than the steel chips, the steel chips will not be discharged from the exhaust groove 403. Only the hot air is discharged to heat the entire hollow cylindrical steel billet 6. This method makes the originally static air circulate, allowing the air to pass evenly through every part of the surface of the hollow cylindrical steel billet 6. This prevents stress concentration or micro-cracks from forming on the pipe wall and weld seam during the grinding process of the hollow cylindrical steel billet 6 due to temperature differences, ensuring that the weld seam structure is uniform and dense. At the same time, the hot airflow can also accelerate the desorption and blowing away of residual steel chips.

[0053] When the exhaust groove 403 rotates away from the hollow cylindrical steel billet 6 and is located inside the heater 305, the exhaust groove 403 is blocked inside the heater 305. The hot air can only transport the steel chips to the end of the cylindrical groove 404 and discharge them. At this time, the exhaust groove 403 loses its external connection, which reduces the gas diversion. This increases the air pressure discharged through the end of the cylindrical groove 404, achieving a stronger directional removal ability of steel chips and effectively improving the cleanliness of the weld area. The periodic opening and closing of the exhaust groove 403 forms an intermittent strong airflow impact, further enhancing the peeling effect on stubborn steel chips. During grinding, some steel chips are pushed onto the high-temperature elastic cloth 405 by the grinding cylinder 308 and partially collected by the high-temperature elastic cloth 405. At the same time, the concave and convex texture on the surface of the high-temperature elastic cloth 405 can scrape the remaining steel chips on the hollow cylindrical steel billet 6 into the concave surface for cleaning, thereby further improving the surface smoothness of the hollow cylindrical steel billet 6.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steel billet welding equipment with weld seam shaping function, comprising a CNC machine tool (1), wherein a welding head (2) is provided on one side of the CNC machine tool (1), and a slide rail (5) is fixedly connected to one side of the CNC machine tool (1), characterized in that: The top of the slide rail (5) is provided with a clamping and shaping mechanism (3), and a hollow cylindrical steel billet (6) is provided inside the clamping and shaping mechanism (3). The clamping and shaping mechanism (3) includes: L-shaped moving block (301), the L-shaped moving block (301) is slidably connected to the slide rail (5), the top of the L-shaped moving block (301) is fixedly connected to the base (302), the top of the base (302) is provided with a sliding groove (303), and the top of the sliding groove (303) is slidably connected to the first moving block (304). Heater (305), the heater (305) is fixedly connected to the first moving block (304), the heater (305) is provided with a second rotating shaft (309) inside, the outer wall of the second rotating shaft (309) is fixedly connected to a heat-conducting cylinder (310), the outer wall of the heat-conducting cylinder (310) is rotatably connected to one side of the heater (305); A driver (306) is slidably connected to one side of the heater (305), and a first rotating shaft (307) is provided inside the driver (306). The first rotating shaft (307) is a circular cylindrical structure. A grinding cylinder (308) is rotatably connected to the outer wall of the first rotating shaft (307), a pawl is fixedly connected to the outer wall at the center of the first rotating shaft (307), and a ratchet is fixedly connected to the inner wall of the grinding cylinder (308). The bottom of the driver (306) is fixedly connected to a connecting block (311), and a fixing block (312) is slidably connected to the outer wall of the connecting block (311). An internal spring is fixedly connected to the connecting block (311) and the fixing block (312). Limiting plates (314) are fixedly connected to both sides of the driver (306), and limiting blocks (313) are fixedly connected to both sides of the heater (305). The limiting blocks (313) are in contact with the limiting plates (314). An auxiliary cleaning mechanism (4) is provided at one end of the heat-conducting cylinder (310). The auxiliary cleaning mechanism (4) includes a high-temperature resistant elastic rope (401). Both ends of the high-temperature resistant elastic rope (401) are fixedly connected to the outer wall of the heat-conducting cylinder (310). A cylindrical groove (404) is opened on the inner wall of one end of the heat-conducting cylinder (310). A fan blade (402) is fixedly connected to the inner wall of the cylindrical groove (404), an exhaust groove (403) is provided on the outer wall of the heat-conducting cylinder (310), a high-temperature resistant elastic cloth (405) is fixedly connected to one side of the driver (306), and a groove is provided on the top of the high-temperature resistant elastic cloth (405).

2. The steel billet welding equipment with weld seam shaping function according to claim 1, characterized in that: The interior of the cylindrical groove (404) is connected to the interior of the exhaust groove (403), the heat-conducting cylinder (310) is connected to both ends through the cylindrical groove (404), and the exhaust groove (403) is a long strip groove.

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