Annular metal part welding equipment

Abstract

The invention relates to the technical field of metal part machining, in particular to annular metal part welding equipment which comprises an upper base and a lower base, an upper sliding rail is fixedly mounted at the bottom of the upper base, a lower sliding rail is fixedly mounted at the top of the lower base, an upper clamping module is slidably mounted on the upper sliding rail, and a lower clamping module is slidably mounted on the lower sliding rail. A plurality of adjusting sliding grooves evenly distributed in the circumferential direction of the upper clamping module are formed in the bottom of the upper clamping module, the bottoms of the adjusting sliding blocks extend out of the adjusting sliding grooves and are fixedly provided with clamping rods, and the structure of the lower clamping module is consistent with that of the upper clamping module. The upper clamping module and the lower clamping module are designed, the annular part can be rapidly clamped through the upper clamping module and the lower clamping module, then the clamped annular part can be driven to move to a designated position through cooperation of an upper sliding rail and a lower sliding rail, and follow-up welding can be facilitated through cooperation of a first telescopic rod and a clamping frame; and the precision of the welded annular part is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of metal parts processing, in particular to a ring-shaped metal parts welding device. Background Art

[0002] Metal parts are a common part in modern industrial processing, and metal parts are an important component of various modern machinery.

[0003] Metal parts have various shapes, and welding technology is often used in their processing. Conventional parts welding usually uses a clamping device to fit the two parts to be welded together for welding. However, when encountering parts welding such as ring structures, the existing fixing method is not applicable, especially the welding and fixing between multiple ring parts. At present, this situation is mostly done by manually fixing the parts and then welding. However, manual fixing cannot guarantee accuracy and will cause deviations after parts welding. At the same time, the welding of annular metal parts often requires manual switching between the outer ring wall and the inner ring wall of the ring to ensure the welding strength of the welding point. This method greatly reduces the welding efficiency of annular metal parts. Therefore, there is an urgent need for annular metal parts welding equipment. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to provide a ring-shaped metal parts welding device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an annular metal parts welding device, comprising an upper base and a lower base, the bottom of the upper base is fixedly installed with an upper slide rail, the top of the lower base is fixedly installed with a lower slide rail, an upper clamping module is slidably installed on the upper slide rail, and a lower clamping module is slidably installed on the lower slide rail, a plurality of adjustment slide grooves uniformly distributed along the circumference of the upper clamping module are opened at the bottom, an adjustment slide block is slidably installed in the adjustment slide groove, an adjustment slide groove is extended from the bottom of the adjustment slide block and a clamping rod is fixedly installed, and the structure of the lower clamping module is consistent with that of the upper clamping module;

[0006] A plurality of mounting rods evenly distributed along the circumference of the lower slide rail are fixedly installed on the top of the lower slide rail, a telescopic rod 1 is inserted into the mounting rod, one end of the telescopic rod 1 passes through the mounting rod and is hinged with a clamping frame.

[0007] In the above-mentioned annular metal parts welding equipment, the lower base is a disc-shaped structure, and a rotating slide groove is provided on the outer wall of the lower base along its circumference. A rotating base is provided on one side of the lower base, and the rotating base is slidably connected to the rotating slide groove. A telescopic slide groove is provided on the top of the rotating base, and a welding module is provided above the rotating base, and the bottom of the welding module is slidably connected to the telescopic slide groove.

[0008] In the above-mentioned annular metal parts welding equipment, a lifting groove is provided on the side of the welding module close to the lower base, and a lifting plate is slidably installed in the lifting groove. A rotating disk is rotatably installed on the side of the lifting plate close to the lower base, and two symmetrically arranged opening and closing slide grooves are provided on the side of the rotating disk close to the lower base. A connecting frame is slidably installed in the opening and closing slide groove, and an opening and closing slide groove is extended from one end of the connecting frame and a rotating ring with a semicircular ring structure is fixedly installed. The installation directions of the two rotating rings on the two connecting frames are arranged to face each other, and a semicircular welding slide groove is provided on the top of the two rotating rings. The welding slide grooves on the two rotating rings are connected to each other, and an adjusting base is slidably installed in the welding slide groove, and a telescopic rod 2 is fixedly installed on the top of the adjusting base, and a laser welding head is hinged at the telescopic end of the telescopic rod 2.

[0009] In the above-mentioned annular metal parts welding equipment, a clamping groove is formed at the bottom of the clamping rod, and a rubber layer is fixedly mounted on the inner wall of the clamping groove.

[0010] In the above-mentioned annular metal parts welding equipment, the clamping frame is composed of a connecting plate and a clamping plate, one side of the connecting plate is hinged to the end of the telescopic rod one, and a connecting slide groove is provided on the side of the connecting plate away from the telescopic rod one, and a connecting slider is slidably installed in the connecting slide groove. The clamping plate has a U-shaped structure, and the outer wall of the clamping plate is fixedly connected to the connecting slider. Clamping bolts are threadedly connected on both sides of the clamping plate, and the clamping bolts pass through the clamping plate and are rotatably installed with clamping sheets.

[0011] In the above-mentioned annular metal parts welding equipment, a positioning bolt is rotatably installed at one end of the telescopic rod close to the clamping frame, and a positioning plate is fixedly installed at one end of the positioning bolt inserted in the telescopic rod, and an extrusion protrusion is fixedly installed on the outer wall of the positioning plate, and a spring rod is inserted in the telescopic rod, and one end of the spring rod is in contact with the outer wall of the positioning plate, and an inclined surface is provided at the end of the spring rod away from the positioning plate, and a spring rod 2 is inserted in the telescopic rod and located at the end of the spring rod away from the positioning plate, and the spring rod 2 and the spring rod 1 are distributed at an angle of 90°, and an inclined surface is provided at one end of the spring rod 2 close to the spring rod 1, and the inclined surface on the spring rod 2 contacts the inclined surface on the spring rod 1, and the end of the spring rod 2 away from the spring rod 1 passes through the telescopic rod and is fixedly installed with a clamping tooth, and a clamping groove distributed in a straight line is provided on the inner wall of the mounting rod, and the clamping tooth and the clamping groove are matched in a concave-convex manner.

[0012] In the above-mentioned annular metal parts welding equipment, a thread is provided on the outer wall of the upper slide rail, a limit plate is threadedly connected to the outer wall of the upper slide rail and located below the upper clamping module, and a scale is engraved on the outer wall of the upper slide rail.

[0013] Compared with the existing technology, the advantages of the annular metal parts welding equipment are: the present invention designs an upper clamping module and a lower clamping module, through which the annular parts can be quickly clamped, and the upper slide rail and the lower slide rail can drive the clamped annular parts to move to the specified position, and the telescopic rod and the clamping frame can facilitate subsequent welding, ensuring the accuracy of the annular parts after welding. At the same time, the present invention designs a welding module, which can realize automatic welding of annular parts, solves the problem in the prior art that when welding annular parts, it is necessary to reciprocate on the outside and inside of the annular parts, thereby improving the welding efficiency of annular parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the upper base and the lower base in the present invention.

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the welding module in the present invention.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper clamping module in the present invention.

[0017] Figure 4 It is a schematic diagram of the three-dimensional cross-section structure of the upper clamping module and the lower clamping module in the present invention.

[0018] Figure 5 The present invention Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0019] Figure 6 It is a schematic cross-sectional structural diagram of the clamping rod in the present invention.

[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating ring in the present invention.

[0021] Figure 8 It is a schematic cross-sectional structural diagram of the clamping frame in the present invention.

[0022] Fig. 9 It is a schematic cross-sectional structural diagram of the telescopic rod 1 in the present invention.

[0023] Fig.10 It is a schematic cross-sectional structural diagram of the spring rod 1 and the spring rod 2 in the present invention.

[0024] In the figure: 1. upper base; 2. lower base; 101. upper slide rail; 102. upper clamping module; 201. lower slide rail; 202. lower clamping module; 103. adjusting slide groove; 104. adjusting slider; 105. clamping rod; 3. mounting rod; 301. telescopic rod 1; 302. clamping frame; 203. rotating slide groove; 4. rotating base; 401. telescopic slide groove; 5. welding module; 501. lifting groove; 502. lifting plate; 503. rotating disk; 504. opening and closing slide groove; 505. connection Frame; 506, rotating ring; 507, welding slide; 508, adjusting base; 509, telescopic rod 2; 510, laser welding head; 106, clamping groove; 303, connecting plate; 304, clamping plate; 305, connecting slide; 306, connecting slider; 307, clamping bolt; 308, clamping sheet; 309, positioning bolt; 310, positioning plate; 311, extrusion protrusion; 312, spring rod 1; 313, spring rod 2; 314, clamping tooth; 315, clamping groove; 107, limit plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Reference Figure 1-Figure 10A ring-shaped metal parts welding device comprises an upper base 1 and a lower base 2, wherein an upper slide rail 101 is fixedly installed at the bottom of the upper base 1, and a lower slide rail 201 is fixedly installed at the top of the lower base 2, an upper clamping module 102 is slidably installed on the upper slide rail 101, and a lower clamping module 202 is slidably installed on the lower slide rail 201, and a plurality of adjusting grooves 103 evenly distributed along the circumference of the upper clamping module 102 are provided at the bottom, and an adjusting slider 104 is slidably installed in the adjusting groove 103, and the adjusting slider 104 extends from the bottom of the adjusting groove 103 and is fixedly installed with a clamping rod 105, and the structure of the lower clamping module 202 is the same as that of the upper clamping module 102 The structure is consistent with that of. When in use, the upper base 1 needs to be fixed on the steel beam, the lower base 2 is fixed on the ground, the upper slide rail 101 is vertically aligned with the lower slide rail 201, the upper clamping module 102 and the lower clamping module 202 respectively clamp the annular parts to be welded through the clamping rod 105, the adjusting groove 103 and the adjusting slider 104 can adjust the position of the clamping rod 105, and can be adjusted within a certain range according to the diameter of the annular parts to be processed, the upper clamping module 102 and the upper slide rail 101 are electrically driven, the lower clamping module 202 and the lower slide rail 201 are electrically driven, and the adjusting slider 104 and the adjusting groove 103 are electrically driven.

[0028] A plurality of mounting rods 3 evenly distributed along the circumference are fixedly installed on the top of the lower slide rail 201, a telescopic rod 301 is inserted into the mounting rod 3, one end of the telescopic rod 301 passes through the mounting rod 3 and is hinged with a clamping frame 302, the mounting rod 3 is used to connect the telescopic rod 301, the telescopic rod 301 can drive the clamping frame 302 clamping the part to be telescopically adjusted within a specified range by telescoping, so as to facilitate adjustment according to the diameter of the annular part.

[0029] The lower base 2 is a disc-shaped structure, and a rotating groove 203 is provided on the outer wall of the lower base 2 along its circumference. A rotating base 4 is provided on one side of the lower base 2, and the rotating base 4 is slidably connected to the rotating groove 203. A telescopic groove 401 is provided on the top of the rotating base 4, and a welding module 5 is provided above the rotating base 4. The bottom of the welding module 5 is slidably connected to the telescopic groove 401. The rotating base 4 and the rotating groove 203 are electrically driven, and the telescopic groove 401 is used to realize the horizontal movement of the welding module 5. The welding module 5 and the telescopic groove 401 are electrically driven.

[0030] A lifting groove 501 is provided on the side of the welding module 5 close to the lower base 2, and a lifting plate 502 is slidably installed in the lifting groove 501. A rotating disk 503 is rotatably installed on the side of the lifting plate 502 close to the lower base 2. Two symmetrically arranged opening and closing slide grooves 504 are provided on the side of the rotating disk 503 close to the lower base 2, and a connecting frame 505 is slidably installed in the opening and closing slide groove 504. One end of the connecting frame 505 extends out of the opening and closing slide groove 504 and is fixedly installed with a rotating ring 506 of a semi-circular ring structure. The lifting groove 501 is used to realize the reciprocating lifting of the lifting plate 502, and the lifting plate 502 and the lifting groove 501 are electrically driven. The rotating disk 503 rotates on the lifting plate 502 through a driving motor. The rotating disk 503 is used to drive the connecting frame 505 and the rotating ring 506 to flip. The connecting frame 505 and the opening and closing slide groove 504 are electrically driven, and the opening and closing of the two rotating rings 506 can be realized through the opening and closing slide groove 504.

[0031] The installation directions of the two rotating rings 506 on the two connecting frames 505 are arranged to face each other. The tops of the two rotating rings 506 are provided with welding grooves 507 of semicircular structure. The welding grooves 507 on the two rotating rings 506 are interconnected. An adjusting base 508 is slidably installed in the welding grooves 507. A telescopic rod 2 509 is fixedly installed on the top of the adjusting base 508. The telescopic end of the telescopic rod 2 509 is hinged with a laser welding head 510. When the two rotating rings 506 contact each other, the two welding grooves 507 are interconnected, and the adjusting base 508 and The welding chute 507 is electrically driven. At this time, the adjustment base 508 can circulate and move in the closed welding chute 507. The telescopic rod 509 is an electric telescopic rod. The telescopic end of the telescopic rod 509 is electrically driven with the laser welding head 510. The telescopic rod 509 can drive the laser welding head 510 to extend and retract and adjust the angle. In conjunction with the movement of the adjustment base 508, automatic welding along the end of the weldment can be achieved, which solves the problem that the existing welding method requires back and forth adjustment on the outside and inside of the annular parts, thereby improving the welding efficiency of the annular parts.

[0032] A clamping groove 106 is provided at the bottom of the clamping rod 105, and a rubber layer is fixedly installed on the inner wall of the clamping groove 106. The clamping rod 105 is clamped on the annular part through the clamping groove 106. Through the synchronous movement of the corresponding clamping rod 105, the annular part can be clamped and fixed under the action of the expansion force.

[0033] The clamping frame 302 is composed of a connecting plate 303 and a clamping plate 304. One side of the connecting plate 303 is hinged to the end of the telescopic rod 301. A connecting groove 305 is provided on the side of the connecting plate 303 away from the telescopic rod 301. A connecting slider 306 is slidably installed in the connecting groove 305. The clamping plate 304 is a U-shaped structure. The outer wall of the clamping plate 304 is fixedly connected to the connecting slider 306. Both sides of the clamping plate 304 are threadedly connected with clamping bolts 307. The clamping bolts 307 penetrate the clamping plate 304 and are rotatably installed with clamping pieces 308. When clamping, the rod-shaped welded parts are clamped between the clamping plates 304 and the clamping bolts 307 are used to push the clamping pieces 308 to contact the outer wall of the rod-shaped welded parts. The clamping and fixing of the rod-shaped welded parts are achieved through the contact of the clamping pieces 308.

[0034] A positioning bolt 309 is rotatably installed at one end of the telescopic rod 301 close to the clamping frame 302, and a positioning disk 310 is fixedly installed at one end of the positioning bolt 309 inserted in the telescopic rod 301, and an extrusion protrusion 311 is fixedly installed on the outer wall of the positioning disk 310, and a spring rod 312 is inserted in the telescopic rod 301, and one end of the spring rod 312 contacts the outer wall of the positioning disk 310, and an inclined surface is provided at the end of the spring rod 312 away from the positioning disk 310, and a spring rod 2 313 is inserted in the telescopic rod 301 and located at the end of the spring rod 312 away from the positioning disk 310, and the spring rod 2 313 is distributed at a 90° angle with the spring rod 1 312, and an inclined surface is provided at one end of the spring rod 2 313 close to the spring rod 1 312, and the inclined surface on the spring rod 2 313 contacts the inclined surface on the spring rod 1 312, and the end of the spring rod 2 313 away from the spring rod 1 312 A latching tooth 314 is provided on the inner wall of the mounting rod 3 and is arranged to extend through the telescopic rod 301. A slot 315 distributed in a straight line is provided on the inner wall of the mounting rod 3. The latching tooth 314 and the slot 315 are matched with each other. When the telescopic rod 301 drives the rod-shaped welding part to move to the specified position, the positioning bolt 309 is screwed to drive the positioning plate 310 to rotate synchronously. The rotation of the positioning plate 310 will drive the extrusion protrusion 311 to move and contact with one end of the spring rod 312. The extrusion of the extrusion protrusion 311 will make the spring rod 1 312 extend in the specified direction. The extension of the spring rod 1 312 will synchronously push the spring rod 2 313 to extend in the specified direction. The extension of the spring rod 2 313 will push the latching tooth 314 to extend out of the telescopic rod 1 301 and be connected to the slot 315 at the corresponding position. At this time, the telescopic rod 1 301 is fixed, which can prevent the telescopic rod 1 301 from moving due to accidental touch after positioning, thereby further improving the welding accuracy.

[0035] A thread is provided on the outer wall of the upper slide rail 101, and a limit plate 107 is threadedly connected to the outer wall of the upper slide rail 101 and located below the upper clamping module 102. A scale is engraved on the outer wall of the upper slide rail 101. The position of the limit plate 107 on the upper slide rail 101 can be adjusted by rotating the limit plate 107, and the lowering position of the upper clamping module 102 can be adjusted according to the height of the rod-shaped weldment.

[0036] The specific working principle and use method of the present invention are explained in detail below: Step 1, first, clamp the two annular parts to be welded on the upper clamping module 102 and the lower clamping module 202 respectively, move the upper base 1 and the lower base 2 away from each other, and then clamp the rod-shaped welding parts on a plurality of clamping frames 302, operate the upper base 1 and the lower base 2 to move toward each other to the specified position, manually pull the plurality of clamping frames 302 in turn and place the rod-shaped welding parts between the two annular parts, and after positioning is completed, fix the telescopic rod 1 301;

[0037] Step 2, operate the rotating base 4 to rotate to the specified position, operate the welding module 5 to move in the direction of the upper base 1 and the lower base 2, drive the two rotating rings 506 to be inserted on both sides of the corresponding rod-shaped welding parts, operate the two connecting frames 505 to move toward each other, so that the two rotating rings 506 are closed, and when the two rotating rings 506 contact each other, the two welding chutes 507 will be connected to each other, and the adjusting base 508 and the welding chutes 507 are electrically driven. At this time, the adjusting base 508 can move in a circle in the closed welding chutes 507, and the telescopic rod 509 is an electric telescopic rod. The telescopic end of the telescopic rod 509 is electrically driven with the laser welding head 510. The telescopic rod 509 can drive the laser welding head 510 to telescope and adjust the angle. With the movement of the adjusting base 508, automatic welding along the end of the welding part can be realized, which solves the problem that the existing welding method needs to adjust back and forth on the outside and inside of the annular part, thereby improving the welding efficiency of the annular parts.

[0038] Step 3: After a rod-shaped welding part is welded, the two closed rotating rings 506 are separated, and at the same time, the welding module 5 is moved away from the upper base 1 and the lower base 2, and step 2 is repeated.

[0039] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ring-shaped metal parts welding device, comprising an upper base (1) and a lower base (2), characterized in that: An upper slide rail (101) is fixedly installed at the bottom of the upper base (1), a lower slide rail (201) is fixedly installed at the top of the lower base (2), an upper clamping module (102) is slidably installed on the upper slide rail (101), and a lower clamping module (202) is slidably installed on the lower slide rail (201), a plurality of adjustment grooves (103) uniformly distributed along its circumference are opened at the bottom of the upper clamping module (102), an adjustment slider (104) is slidably installed in the adjustment groove (103), the bottom of the adjustment slider (104) extends out of the adjustment groove (103) and is fixedly installed with a clamping rod (105), and the structure of the lower clamping module (202) is consistent with that of the upper clamping module (102); A plurality of mounting rods (3) evenly distributed along the circumference of the lower slide rail (201) are fixedly mounted on the top of the lower slide rail (201), a telescopic rod (301) is inserted into the mounting rod (3), and one end of the telescopic rod (301) passes through the mounting rod (3) and is hingedly connected to a clamping frame (302).

2. The annular metal parts welding equipment according to claim 1, characterized in that: The lower base (2) is in a disc-shaped structure. A rotating slide groove (203) is provided on the outer wall of the lower base (2) along its circumference. A rotating base (4) is provided on one side of the lower base (2). The rotating base (4) is slidably connected to the rotating slide groove (203). A telescopic slide groove (401) is provided on the top of the rotating base (4). A welding module (5) is provided above the rotating base (4). The bottom of the welding module (5) is slidably connected to the telescopic slide groove (401).

3. The annular metal parts welding device according to claim 2, characterized in that: The welding module (5) is provided with a lifting groove (501) on one side close to the lower base (2), a lifting plate (502) is slidably installed in the lifting groove (501), a rotating disk (503) is rotatably installed on one side of the lifting plate (502) close to the lower base (2), two symmetrically arranged opening and closing grooves (504) are provided on one side of the rotating disk (503) close to the lower base (2), a connecting frame (505) is slidably installed in the opening and closing groove (504), one end of the connecting frame (505) extends out of the opening and closing groove (504) and is fixedly installed with a semicircular ring The invention discloses a rotating ring (506) with a type structure, wherein the installation directions of the two rotating rings (506) on the two connecting frames (505) are mutually facing each other, the tops of the two rotating rings (506) are provided with a welding chute (507) with a semicircular structure, the welding chute (507) on the two rotating rings (506) are mutually connected, an adjusting base (508) is slidably installed in the welding chute (507), a telescopic rod 2 (509) is fixedly installed on the top of the adjusting base (508), and a laser welding head (510) is hinged at the telescopic end of the telescopic rod 2 (509).

4. The annular metal parts welding device according to claim 1, characterized in that: A clamping groove (106) is provided at the bottom of the clamping rod (105), and a rubber layer is fixedly mounted on the inner wall of the clamping groove (106).

5. The annular metal parts welding equipment according to claim 1, characterized in that: The clamping frame (302) is composed of a connecting plate (303) and a clamping plate (304). One side of the connecting plate (303) is hinged to the end of the telescopic rod (301). A connecting groove (305) is provided on the side of the connecting plate (303) away from the telescopic rod (301). A connecting slider (306) is slidably installed in the connecting groove (305). The clamping plate (304) is U-shaped. The outer wall of the clamping plate (304) is fixedly connected to the connecting slider (306). Both sides of the clamping plate (304) are threadedly connected with clamping bolts (307). The clamping bolts (307) penetrate the clamping plate (304) and are rotatably installed with clamping pieces (308).

6. The annular metal parts welding device according to claim 5, characterized in that: A positioning bolt (309) is rotatably mounted on one end of the telescopic rod (301) close to the clamping frame (302); a positioning plate (310) is fixedly mounted on one end of the positioning bolt (309) inserted in the telescopic rod (301); an extrusion protrusion (311) is fixedly mounted on the outer wall of the positioning plate (310); a spring rod (312) is inserted in the telescopic rod (301); one end of the spring rod (312) contacts the outer wall of the positioning plate (310); an inclined surface is provided on one end of the spring rod (312) away from the positioning plate (310); a spring rod (312) is inserted in the telescopic rod (301) and is located in the telescopic rod (301) away from the spring rod (312). A second spring rod (313) is inserted into one end of the position plate (310), and the second spring rod (313) and the first spring rod (312) are arranged at an angle of 90 degrees. An end of the second spring rod (313) close to the first spring rod (312) is provided with an inclined surface, and the inclined surface on the second spring rod (313) contacts the inclined surface on the first spring rod (312). An end of the second spring rod (313) away from the first spring rod (312) passes through the telescopic rod (301) and is fixedly installed with a latching tooth (314). A latching groove (315) distributed in a straight line is provided on the inner wall of the installation rod (3), and the latching tooth (314) and the latching groove (315) are matched in a concave-convex manner.

7. The annular metal parts welding equipment according to claim 1, characterized in that: The outer wall of the upper slide rail (101) is provided with a thread, and a limit plate (107) is threadedly connected to the outer wall of the upper slide rail (101) and located below the upper clamping module (102), and a scale is engraved on the outer wall of the upper slide rail (101).

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