Sectional type welding device for building metal parts
By designing a segmented welding device for building metal parts, using the cooperation of fixed components, adjustment components and limiting components, the problem that existing welding devices are difficult to weld multi-angle metal parts is solved, and efficient and safe welding effects are achieved.
Patent Information
- Application Number
- CN202510266043.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2025-04-18
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing welding devices are difficult to safely and efficiently weld metal parts of multiple angles, and the welding accuracy is poor.
A segmented welding device for building metal parts is designed. Through the coordination of fixing components, adjustment components and limiting components, the fixing of metal parts and the welding gun are achieved to ensure welding accuracy and safety.
It realizes safe and efficient welding of multi-angle metal parts, improves welding accuracy and stability, and enhances the safety of the welding process.
Smart Images
Figure CN119839573A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of welding devices, and in particular to a segmented welding device for metal parts used in construction. Background Art
[0002] In the field of construction engineering, steel pipe butt welding is a common task used to connect and reinforce steel pipe structures. Steel pipe structures are widely used in many fields, including bridges, buildings, oil and gas pipelines, etc. The quality of steel pipe butt welding directly affects the stability and safety of the structure.
[0003] There are many shapes of existing building metal parts, but most of the existing welding devices can only weld metal parts on the same horizontal plane. When welding metal parts at multiple angles, most of them are welded by manual handling, which is very unsafe and has poor welding accuracy. Summary of the invention
[0004] The purpose of the present application is to provide a segmented welding device for metal parts for construction, which realizes that a fixing assembly fixes a first segment of a metal part, and then fixes another segment of a metal part inside a storage plate, and then freely adjusts the overall angle of the storage plate as needed. After the adjustment is completed, the two segments of the metal part are welded together by a welding gun.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a segmented welding device for metal parts for construction, comprising a device body, support plates fixedly connected to both sides of the device body, a mounting hole being provided at the bottom of the support plate, a support plate fixedly connected to the rear side of the device body, a fixing rod fixedly connected to the top surface of the support plate, a collar connected to the top end of the fixing rod, a docking column fixedly connected to the outer surface of the collar, the other end of the docking column being rotatably connected to a mounting plate, a welding gun being provided on the bottom surface of the mounting plate; further comprising a fixing assembly, an adjusting assembly and a limiting assembly, the fixing assembly being arranged on the device body for placing metal parts, the adjusting assembly being arranged on the device body for use in conjunction with the fixing assembly, and the limiting assembly being arranged on the adjusting assembly for use in conjunction.
[0006] Preferably, the fixing assembly includes a base plate fixedly mounted on one side of the top surface of the device body, the front and rear sides of the base plate are fixedly connected to side plates, the side plates are provided with sliding grooves, a pair of first shaft seats are fixedly connected to the middle position of the top surface of the base plate, a first screw rod is rotatably connected between the pair of first shaft seats, and one end of the first screw rod is fixedly connected to a first handle.
[0007] Preferably, a sleeve block is threadedly connected to the first screw rod, a bracket is fixedly installed on the top surface of the sleeve block, the bracket is slidably connected to the side rod, both ends of the side rod are fixedly connected to the support seat, the bottom end of the support seat is fixedly connected to the bottom plate, and sliding rods are fixedly connected to both sides of the sleeve block, and the sliding rods extend to the outside of the side plate through the sliding groove.
[0008] Preferably, one end of the slide rod is rotatably connected to a linkage plate, the other end of the linkage plate is rotatably connected to a docking seat, the docking seat is fixedly installed at the bottom surface of the processing table, a pair of second shaft seats are fixedly installed on the top surface of the processing table, a second screw rod is rotatably connected to the pair of second shaft seats, one end of the second screw rod is fixedly connected to a second turning handle, the second screw rod is threadedly connected to a sleeve seat, the top end of the sleeve seat is fixedly connected to a splint, both sides of the bottom surface of the splint are fixedly connected to sliders, the sliders are slidably connected to guide rails, and the guide rails are fixedly installed on the processing table.
[0009] Preferably, the adjustment assembly includes a limit plate fixedly mounted on the other side of the top surface of the device body, two sets of fixed seats are fixedly connected to the limit plate, guide rods are fixedly connected between the fixed seats, pulleys are slidably connected to the guide rods, the pulleys are rotatably connected to the base, and the top of the base is fixedly connected to the control panel.
[0010] Preferably, a pair of third shaft seats are fixedly connected to the top surface of the control plate, a main shaft is rotatably connected between the third shaft seats, a gear is fixedly installed at the middle position of the main shaft, an adjustment plate is fixedly connected to the main shaft, and a storage plate is installed on the top surface of the adjustment plate.
[0011] Preferably, the limit assembly includes an arm plate fixedly connected to the two ends of the main shaft, the other end of the arm plate is rotatably connected to a roller, positioning plates are fixedly connected to both sides of the top surface of the control plate, a curved groove is provided on the positioning plate, the roller is slidably connected inside the curved groove, and a through groove is provided in the middle of the control plate.
[0012] Preferably, a pair of mounting frames are fixedly connected to the bottom surface of the control panel, a pair of positioning rods are fixedly connected between the pair of mounting frames, a movable sleeve is slidably connected to the pair of positioning rods, a spring is sleeved on the pair of positioning rods, and two ends of the spring are respectively fixedly connected to one side of the movable sleeve and one side of the mounting frame.
[0013] Preferably, a top plate is fixedly connected to the middle of the top surface of the movable sleeve, the top of the top plate is fixedly connected to a clamping block, an arc groove is provided on the top surface of the clamping block, a plurality of groups of clamping teeth are provided on the top surface of the clamping block, and the clamping teeth are clamped inside the gear.
[0014] Preferably, a limiting seat is fixedly connected to the middle position of the bottom surface of the movable sleeve, a rod body is fixedly connected to one side of the limiting seat, and a handle is fixedly connected to the other end of the rod body.
[0015] In summary, the present invention has the following beneficial effects: 1. The present invention has a reasonable structure. The metal part of the first section is placed between the clamping plates. Then the second turning handle is rotated to drive the second screw rod to rotate. The second screw rod is provided with positive and negative threads, and different threads are threadedly connected with a sleeve seat. The sleeve seat drives the clamping plate to move through the rotation of the second screw rod, so as to facilitate the fixation of the metal part. Then, the first turning handle is rotated to drive the first screw rod to rotate as needed. The first screw rod is provided with positive and negative threads, and different threads are threadedly connected with a sleeve block. The sleeve block is moved by the rotation of the first screw rod. The movement of the sleeve block drives the slide rod to slide inside the slide groove. The movement of the slide rod adjusts the height of the processing table through the linkage plate. 2. In the present invention, another section of the metal piece is fixed inside the storage plate, and then the control plate is pushed as a whole. The bottom end of the control plate is fixedly connected to a base, and a pulley is rotatably connected to the base. The pulley is slidably connected to the guide rod. The pulley slides on the guide rod through the movement of the control plate, thereby increasing the stability of the movement of the control plate. The movement of the control plate facilitates the docking of the metal piece on the storage plate with the metal piece on the clamping plate. 3. In the present invention, when the angle of the storage plate needs to be adjusted, the handle is first pulled to move the movable sleeve through the limit seat on the rod body, so that the movable sleeve slides on the positioning rod, and the movement of the movable sleeve squeezes the spring. Then the movement of the movable sleeve causes the locking tooth to disengage from the gear through the clamping block on the top plate, and then the storage plate is rotated to drive the main shaft to rotate. The rotation of the main shaft causes the roller on the arm plate to slide inside the curved groove. After adjusting the angle of the storage plate, the handle is released, and the locking tooth is re-clamped on the gear by the elastic force of the spring, thereby facilitating the fixing of the angle of the storage plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body; Figure 2 It is a schematic diagram of the three-dimensional structure of the device body from a side view; Figure 3 It is a schematic diagram of the rear-view stereoscopic structure of the device body; Figure 4 It is a schematic diagram of the three-dimensional structure of the base plate; Figure 5 It is a schematic diagram of the three-dimensional structure of the processing table; Figure 6 Schematic diagram of the three-dimensional structure of the limiting plate; Figure 7 It is a schematic diagram of the three-dimensional structure of the limiting plate from a side view; Figure 8 It is a schematic diagram of the three-dimensional structure of the mounting frame.
[0018] In the figure: 1, device body; 101, support plate; 102, mounting hole; 103, support plate; 104, fixing rod; 105, collar; 106, docking column; 107, mounting plate; 108, welding gun; 2, bottom plate; 201, side plate; 202, slide groove; 203, first shaft seat; 204, first screw rod; 205, first handle; 206, sleeve block; 207, bracket; 208, side rod; 209, support seat; 210, slide rod; 211, linkage plate; 212, docking seat; 213, processing table; 214, second shaft seat; 215, second screw rod; 216, second handle; 217, sleeve seat; 218. Clamp; 219. Slider; 220. Guide rail; 3. Limit plate; 301. Fixed seat; 302. Guide rod; 303. Pulley; 304. Base; 305. Control board; 306. Third axis seat; 307. Spindle; 308. Gear; 309. Adjustment board; 310. Storage board; 4. Arm board; 401. Roller; 402. Positioning plate; 403. Bending groove; 404. Through groove; 405. Mounting frame; 406. Positioning rod; 407. Moving sleeve; 408. Spring; 409. Top plate; 410. Block; 411. Gear; 412. Limit seat; 413. Rod body; 414. Handle. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] Example: Reference Figure 1 - Figure 8The shown device is a segmented welding device for metal parts for construction, comprising a device body 1, support plates 101 are fixedly connected to both sides of the device body 1, a mounting hole 102 is provided at the bottom of the support plate 101, a support plate 103 is fixedly connected to the rear side of the device body 1, a fixing rod 104 is fixedly connected to the top surface of the support plate 103, a collar 105 is connected to the top end of the fixing rod 104, a docking column 106 is fixedly connected to the outer surface of the collar 105, the other end of the docking column 106 is rotatably connected to a mounting plate 107, a welding gun 108 is provided on the bottom surface of the mounting plate 107; the device also comprises a fixing component, an adjusting component and a limiting component, the fixing component is arranged on the device body 1 for placing metal parts, the adjusting component is arranged on the device body 1 for use in conjunction with the fixing component, and the limiting component is arranged on the adjusting component for use in conjunction.
[0021] Specifically, it should be noted that the welding gun 108 is electrically connected to an external control unit through a wire, and the specific working principles are referenced through the existing technology and will not be elaborated on here. The welding gun 108 can be slidably connected to the mounting plate 107. When the multi-end metal parts need to be fixed, the welding gun 108 can be used to weld the joints of the multi-section metal parts.
[0022] As an implementation method in this embodiment, the fixing component includes a bottom plate 2 fixedly installed on one side of the top surface of the device body 1, the front and rear sides of the bottom plate 2 are fixedly connected with side plates 201, a slide groove 202 is provided on the side plate 201, a pair of first shaft seats 203 are fixedly connected to the middle position of the top surface of the bottom plate 2, a first screw rod 204 is rotatably connected between the pair of first shaft seats 203, and one end of the first screw rod 204 is fixedly connected to the first turning handle 205. The fixing component includes a bottom plate 2 fixedly installed on one side of the top surface of the device body 1, the front and rear sides of the bottom plate 2 are fixedly connected with side plates 201, a slide groove 202 is provided on the side plate 201, a pair of first shaft seats 203 are fixedly connected to the middle position of the top surface of the bottom plate 2, a first screw rod 204 is rotatably connected between the pair of first shaft seats 203, one end of the first screw rod 204 is fixedly connected to the first turning handle 205, a sleeve block 206 is threadedly connected to the first screw rod 204, a bracket 207 is fixedly installed on the top surface of the sleeve block 206, and the bracket 207 slides The two ends of the side rod 208 are fixedly connected to the support seat 209, and the bottom end of the support seat 209 is fixedly connected to the bottom plate 2. The two sides of the sleeve block 206 are fixedly connected with the slide rod 210, and the slide rod 210 extends to the outside of the side plate 201 through the slide groove 202. One end of the slide rod 210 is rotatably connected to the linkage plate 211, and the other end of the linkage plate 211 is rotatably connected to the docking seat 212. The docking seat 212 is fixedly installed at the bottom surface of the processing table 213. The processing table 2 A pair of second shaft seats 214 are fixedly installed on the top surface of 13, and a second screw rod 215 is rotatably connected to the pair of second shaft seats 214. One end of the second screw rod 215 is fixedly connected to a second turning handle 216, and a sleeve seat 217 is threadedly connected to the second screw rod 215. The top end of the sleeve seat 217 is fixedly connected to a clamping plate 218, and sliders 219 are fixedly connected on both sides of the bottom surface of the clamping plate 218. The slider 219 is slidably connected to a guide rail 220, and the guide rail 220 is fixedly installed on the processing table 213.
[0023] Specifically, the metal part of the first section is placed between the clamping plates 218, and then the second turning handle 216 is rotated to drive the second screw rod 215 to rotate. The second screw rod 215 is provided with positive and negative threads, and the sleeve 217 is threadedly connected to different threads. The sleeve 217 drives the clamping plate 218 to move through the rotation of the second screw rod 215, so as to facilitate the fixation of the metal part. Then, the first turning handle 205 is rotated as needed to drive the first screw rod 204 to rotate. The first screw rod 204 is provided with positive and negative threads, and the sleeve block 206 is threadedly connected to different threads. The sleeve block 206 is moved through the rotation of the first screw rod 204. The movement of the sleeve block 206 drives the slide rod 210 to slide inside the slide groove 202. The movement of the slide rod 210 adjusts the height of the processing table 213 through the linkage plate 211.
[0024] As an implementation method in this embodiment, the adjustment component includes a limit plate 3 fixedly installed on the other side of the top surface of the device body 1, two groups of fixed seats 301 are fixedly connected to the limit plate 3, guide rods 302 are fixedly connected between the fixed seats 301, pulleys 303 are slidably connected to the guide rods 302, and the pulleys 303 are rotatably connected to the base 304. The top of the base 304 is fixedly connected to the control board 305, and a pair of third shaft seats 306 are fixedly connected to the top surface of the control board 305. A main shaft 307 is rotatably connected between the third shaft seats 306, a gear 308 is fixedly installed in the middle position of the main shaft 307, an adjustment plate 309 is fixedly connected to the main shaft 307, and a storage plate 310 is installed on the top surface of the adjustment plate 309.
[0025] Specifically, another section of the metal part is fixed inside the storage plate 310, and then the control plate 305 is pushed as a whole. The bottom end of the control plate 305 is fixedly connected to the base 304, and the base 304 is rotatably connected to the pulley 303, and the pulley 303 is slidably connected to the guide rod 302. The pulley 303 slides on the guide rod 302 through the movement of the control plate 305, thereby increasing the stability of the movement of the control plate 305. The movement of the control plate 305 facilitates the docking of the metal parts on the storage plate 310 with the metal parts on the clamping plate 218.
[0026] As an implementation method in this embodiment, the limit assembly includes an arm plate 4 fixedly connected to both ends of the main shaft 307, the other end of the arm plate 4 is rotatably connected to a roller 401, positioning plates 402 are fixedly connected to both sides of the top surface of the control plate 305, a curved groove 403 is opened on the positioning plate 402, the roller 401 is slidably connected inside the curved groove 403, a through groove 404 is opened in the middle position of the control plate 305, a pair of mounting frames 405 are fixedly connected to the bottom surface of the control plate 305, a pair of positioning rods 406 are fixedly connected between the pair of mounting frames 405, a pair of positioning rods 406 are slidably connected to a moving sleeve 407, and a pair of positioning rods A spring 408 is sleeved on 406, and two ends of the spring 408 are fixedly connected to one side of the movable sleeve 407 and one side of the mounting frame 405 respectively; a top plate 409 is fixedly connected to the middle position of the top surface of the movable sleeve 407, and the top of the top plate 409 is fixedly connected to the clamping block 410; an arc groove is provided on the top surface of the clamping block 410, and a plurality of groups of clamping teeth 411 are provided on the top surface of the clamping block 410, and the clamping teeth 411 are clamped inside the gear 308; a limiting seat 412 is fixedly connected to the middle position of the bottom surface of the movable sleeve 407, and a rod body 413 is fixedly connected to one side of the limiting seat 412, and a handle 414 is fixedly connected to the other end of the rod body 413.
[0027] Specifically, when it is necessary to adjust the angle of the storage plate 310, first pull the handle 414 through the limit seat 412 on the rod body 413 to move the movable sleeve 407, so that the movable sleeve 407 slides on the positioning rod 406, and the movement of the movable sleeve 407 squeezes the spring 408, and then the movement of the movable sleeve 407 causes the locking tooth 411 to disengage from the gear 308 through the block 410 on the top plate 409, and then the storage plate 310 is rotated to drive the main shaft 307 to rotate, and the rotation of the main shaft 307 causes the roller 401 on the arm plate 4 to slide inside the curved groove 403. After adjusting the angle of the storage plate 310, release the handle 414, and the elastic force of the spring 408 causes the locking tooth 411 to be re-locked on the gear 308, thereby facilitating fixing the angle of the storage plate 310.
[0028] The working principle of the present invention is as follows: the metal piece of the first section is placed between the clamping plates 218, and then the second turning handle 216 is rotated to drive the second screw rod 215 to rotate, the second screw rod 215 is provided with positive and negative threads, and the sleeve 217 is threadedly connected to different threads, and the sleeve 217 drives the clamping plate 218 to move through the rotation of the second screw rod 215, so as to facilitate the fixation of the metal piece, and then the first turning handle 205 is rotated as needed to drive the first screw rod 204 to rotate, the first screw rod 204 is provided with positive and negative threads, and the sleeve block 206 is threadedly connected to different threads, and the sleeve block 206 is moved through the rotation of the first screw rod 204, and the movement of the sleeve block 206 drives the slide rod 210 to slide inside the slide groove 202, and the movement of the slide rod 210 adjusts the height of the processing table 213 through the linkage plate 211; The other section of the metal piece is fixed inside the storage plate 310, and then the control plate 305 is pushed as a whole. The bottom end of the control plate 305 is fixedly connected to the base 304, and the base 304 is rotatably connected to the pulley 303, and the pulley 303 is slidably connected to the guide rod 302. The pulley 303 slides on the guide rod 302 through the movement of the control plate 305, thereby increasing the stability of the movement of the control plate 305. The movement of the control plate 305 facilitates the docking of the metal piece on the storage plate 310 with the metal piece on the clamping plate 218. When the angle of the storage plate 310 needs to be adjusted, the handle 414 is first pulled to move the movable sleeve 407 through the limit seat 412 on the rod body 413, so that the movable sleeve 407 slides on the positioning rod 406, and the movement of the movable sleeve 407 squeezes the spring 408. Then the movement of the movable sleeve 407 causes the locking tooth 411 to disengage from the gear 308 through the block 410 on the top plate 409, and then the storage plate 310 is rotated to drive the main shaft 307 to rotate. The rotation of the main shaft 307 causes the roller 401 on the arm plate 4 to slide inside the curved groove 403. After adjusting the angle of the storage plate 310, the handle 414 is released, and the elastic force of the spring 408 causes the locking tooth 411 to be re-locked on the gear 308, thereby facilitating fixing the angle of the storage plate 310.
[0029] Finally, it should be noted that the above are only 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 aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A segmented welding device for metal parts for construction, comprising a device body (1), characterized in that: The device body (1) is fixedly connected to support plates (101) on both sides, a mounting hole (102) is provided at the bottom of the support plate (101), a support plate (103) is fixedly connected to the rear side of the device body (1), a fixing rod (104) is fixedly connected to the top surface of the support plate (103), a collar (105) is connected to the top end of the fixing rod (104), a docking column (106) is fixedly connected to the outer surface of the collar (105), the other end of the docking column (106) is rotatably connected to a mounting plate (107), and a welding gun (108) is provided on the bottom surface of the mounting plate (107); the device body (1) also includes a fixing component, an adjusting component and a limiting component, the fixing component is arranged on the device body (1) for placing metal parts, the adjusting component is arranged on the device body (1) for use in conjunction with the fixing component, and the limiting component is arranged on the adjusting component for use in conjunction with the fixing component.
2. A sectional welding device for metal parts for construction according to claim 1, characterized in that: The fixing assembly comprises a bottom plate (2) fixedly mounted on one side of the top surface of the device body (1); the front and rear sides of the bottom plate (2) are fixedly connected to side plates (201); a slide groove (202) is provided on the side plate (201); a pair of first shaft seats (203) are fixedly connected to the middle of the top surface of the bottom plate (2); a first screw rod (204) is rotatably connected between the pair of first shaft seats (203); and one end of the first screw rod (204) is fixedly connected to a first turning handle (205).
3. A sectional welding device for metal parts for construction according to claim 2, characterized in that: A sleeve block (206) is threadedly connected to the first screw rod (204), a bracket (207) is fixedly installed on the top surface of the sleeve block (206), the bracket (207) is slidably connected to the side rod (208), both ends of the side rod (208) are fixedly connected to the support seat (209), the bottom end of the support seat (209) is fixedly connected to the bottom plate (2), and sliding rods (210) are fixedly connected to both sides of the sleeve block (206), and the sliding rods (210) extend to the outside of the side plate (201) through the sliding groove (202).
4. A sectional welding device for metal parts for construction according to claim 3, characterized in that: One end of the slide bar (210) is rotatably connected to a linkage plate (211), and the other end of the linkage plate (211) is rotatably connected to a docking seat (212). The docking seat (212) is fixedly mounted on the bottom surface of a processing table (213). A pair of second shaft seats (214) are fixedly mounted on the top surface of the processing table (213). A second screw rod (215) is rotatably connected to the pair of second shaft seats (214). One end of the second screw rod (215) is fixedly connected to a second turning handle (216). A sleeve seat (217) is threadedly connected to the second screw rod (215). The top end of the sleeve seat (217) is fixedly connected to a clamping plate (218). Both sides of the bottom surface of the clamping plate (218) are fixedly connected to sliders (219). The sliders (219) are slidably connected to guide rails (220). The guide rails (220) are fixedly mounted on the processing table (213).
5. The segmented welding device for metal parts for construction according to claim 1 is characterized in that: The adjustment assembly comprises a limit plate (3) fixedly mounted on the other side of the top surface of the device body (1); two groups of fixed seats (301) are fixedly connected to the limit plate (3); guide rods (302) are fixedly connected between the fixed seats (301); a pulley (303) is slidably connected to the guide rod (302); the pulley (303) is rotatably connected to a base (304); and the top end of the base (304) is fixedly connected to a control panel (305).
6. A sectional welding device for metal parts for construction according to claim 5, characterized in that: A pair of third shaft seats (306) are fixedly connected to the top surface of the control plate (305); a main shaft (307) is rotatably connected between the third shaft seats (306); a gear (308) is fixedly installed at the middle position of the main shaft (307); an adjustment plate (309) is fixedly connected to the main shaft (307); and a storage plate (310) is installed on the top surface of the adjustment plate (309).
7. A sectional welding device for metal parts for construction according to claim 6, characterized in that: The limit assembly comprises an arm plate (4) fixedly connected to both ends of the main shaft (307), the other end of the arm plate (4) being rotatably connected to a roller (401), positioning plates (402) being fixedly connected to both sides of the top surface of the control plate (305), a curved groove (403) being provided on the positioning plate (402), the roller (401) being slidably connected inside the curved groove (403), and a through groove (404) being provided in the middle of the control plate (305).
8. A sectional welding device for metal parts for construction according to claim 7, characterized in that: A pair of mounting frames (405) are fixedly connected to the bottom surface of the control panel (305), a pair of positioning rods (406) are fixedly connected between the pair of mounting frames (405), a moving sleeve (407) is slidably connected to the pair of positioning rods (406), a spring (408) is sleeved on the pair of positioning rods (406), and two ends of the spring (408) are respectively fixedly connected to one side of the moving sleeve (407) and one side of the mounting frame (405).
9. A sectional welding device for metal parts for construction according to claim 8, characterized in that: A top plate (409) is fixedly connected to the middle of the top surface of the movable sleeve (407), the top end of the top plate (409) is fixedly connected to a clamping block (410), an arc groove is provided on the top surface of the clamping block (410), and a plurality of groups of clamping teeth (411) are provided on the top surface of the clamping block (410), and the clamping teeth (411) are clamped inside the gear (308).
10. A sectional welding device for metal parts for construction according to claim 9, characterized in that: The middle portion of the bottom surface of the movable sleeve (407) is fixedly connected to a limiting seat (412), one side of the limiting seat (412) is fixedly connected to a rod body (413), and the other end of the rod body (413) is fixedly connected to a handle (414).