Positioning device for C-shaped welding tongs

Abstract

The utility model relates to the field of welding tongs, in particular to a positioning device for C-shaped welding tongs, which comprises a welding frame, a positioning device and a positioning device, wherein the upper end of the welding frame is fixedly connected with an air cylinder; the two welding mechanisms are installed at the lower end of the air cylinder and the end, away from the air cylinder, of the welding frame correspondingly. Wherein the welding mechanism comprises two welding heads, the two welding heads are installed at the lower end of the air cylinder and the end, away from the air cylinder, of the welding frame correspondingly, annular grooves are formed in the surfaces of the welding heads, and clamping assemblies are arranged on the inner walls of the annular grooves; in the using process, under the combined action of the clamping assembly and the adsorption assembly, the fixing pipes on the two sides can abut against the surface of a metal piece through the bottom frame through springs, the workpiece clamping and positioning effect is achieved, it is guaranteed that the two workpieces are tightly attached and make full contact, and a suction cup is adsorbed to the surface of the metal workpiece; therefore, the positioning area is not changed greatly, and the welding machining effect of the workpiece is kept.

Description

Technical Field

[0001] The utility model relates to the field of welding tongs, in particular to a positioning device for C-type welding tongs. Background Art

[0002] Welding is an important and common processing technology for firmly connecting metals. C-type welding clamps are an important part of the spot welding robot welding system. Spot welding, as one of them, is widely used in the manufacturing industry. By clamping two pieces of metal and passing a large current instantly in a small contact surface, the two pieces of metal are melted and fused, and after cooling, they have a solid connection effect.

[0003] After searching the prior art, "a C-type welding tongs" was found with publication number "CN214350192U". This device improves welding efficiency. However, when spot welding two metal sheets, due to the thin workpieces, the two workpieces may not be in sufficient contact in the welding area during processing, affecting the welding effect of the two workpieces.

[0004] Therefore, a positioning device for C-type welding tongs is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a positioning device for a C-type welding tongs in order to solve the above problems, thereby improving the problem that the contact between two metal sheets is not sufficient during spot welding, thus affecting the welding effect.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme, a positioning device for C-type welding tongs, comprising: a welding frame, the upper end of which is fixedly connected to a cylinder; two welding mechanisms, which are respectively installed at the lower end of the cylinder and the end of the welding frame away from the cylinder; wherein the welding mechanism comprises two welding heads, which are respectively installed at the lower end of the cylinder and the end of the welding frame away from the cylinder, an annular groove is provided on the surface of the welding head, a clamping assembly is provided on the inner wall of the annular groove, and an adsorption assembly is provided inside the clamping assembly.

[0007] Preferably, the clamping assembly includes a clamping ring sleeved on the surface of the welding head, a square hole is opened at the upper end of the clamping ring, the square hole matches the ring groove, a connecting frame is fixedly connected to the surface of the clamping ring, the other end of the connecting frame is fixedly connected to a closed cylinder body, a piston is slidably connected to the inner wall of the closed cylinder body, and a fixed tube is fixedly connected to the inner wall of the piston, so that a clamping effect is formed on the metal part through the two fixed tubes.

[0008] Preferably, the adsorption assembly includes a middle hole opened at the upper end of the fixed tube, the inner wall of the middle hole is fixedly connected with an inner partition, the lower end of the middle hole is connected with a suction cup, the surface of the fixed tube is opened with an air jet and an air intake port, the air intake port is located above the air jet, the air intake port is connected with the interior of the closed cylinder body, the air intake port is located below the piston, and the suction cup forms an adsorption effect on the metal surface.

[0009] Preferably, a sealing ring is fixedly connected below the inner wall of the closed cylinder body, and the inner wall of the sealing ring is slidably connected to the surface of the fixed pipe, and the sealing ring ensures that the fixed pipe moves and maintains a sealing effect.

[0010] Preferably, a spring is sleeved on the surface of the fixed tube, and a surface of the fixed tube away from the closed cylinder body is fixedly connected to a base frame, and the base frame can form a secondary seal for the suction cup.

[0011] Preferably, the upper end of the spring is fixedly connected to the lower end of the closed cylinder body, and the lower end of the spring is fixedly connected to the upper end of the base frame. The elastic potential energy of the spring keeps the fixed tube driving the base frame to contact the workpiece surface first.

[0012] Preferably, the other side of the inner partition and the inner wall of the middle hole form an adsorption bin, the lower end of the adsorption bin is connected to the suction cup, and the adsorption bin is connected to the air suction port. Through the cooperation of the air suction port and the adsorption bin, the internal air pressure of the suction cup is reduced synchronously, so that the suction cup is more firmly adsorbed on the surface of the workpiece, maintaining the positioning effect of the workpiece.

[0013] Preferably, one side of the inner partition and the inner wall of the middle hole form a jet chamber, and the jet port is connected to the jet chamber. The gas above the piston is squeezed to the outside through the jet chamber, and then the gas is ejected to the outside through the jet port. The gas is ejected outward through the jet port, and the area to be welded is blown to remove metal particles generated during the spot welding process.

[0014] The beneficial effects of the utility model are:

[0015] 1. During use, under the joint action of the clamping component and the adsorption component, the fixed tubes on both sides can be pressed against the surface of the metal part through the base frame through the spring, so as to form a clamping and positioning effect on the workpiece, ensuring that the two workpieces fit closely and fully contact, and the suction cup is adsorbed on the surface of the metal workpiece, so that the positioning area will not change significantly, and the welding processing effect of the workpiece is maintained.

[0016] 2. When the welding head is close to the workpiece surface during use, the piston will move upward relatively inside the closed cylinder, and the air intake port will transfer the low pressure between the piston and the sealing ring to the suction cup to form an adsorption effect on the metal part. At the same time, the upward movement of the piston will squeeze the gas inside the closed cylinder and discharge it through the air outlet, blowing away the rolling metal particles in the welding area to maintain the welding processing effect of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the cylinder position of the utility model;

[0019] Figure 3 This is a schematic diagram of the welding mechanism structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the ring groove of the utility model;

[0021] Figure 5 It is an exploded cross-sectional view of the clamping assembly of the utility model;

[0022] Figure 6 A schematic diagram of the air intake opening of the utility model;

[0023] Figure 7 This is a schematic diagram of the position of the inner partition of the utility model.

[0024] In the figure: 1. welding frame; 2. cylinder; 3. welding mechanism; 31. clamping assembly; 311. snap ring; 312. square hole; 313. connecting frame; 314. closed cylinder body; 315. sealing ring; 316. piston; 317. fixing pipe; 318. spring; 319. base frame; 32. adsorption assembly; 321. middle hole; 322. inner partition; 323. adsorption chamber; 324. jet chamber; 325. jet outlet; 326. suction cup; 327. air inlet; 33. welding head; 331. ring groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] When implementing: Figure 1-7As shown, a positioning device for a C-type welding clamp comprises: a welding frame 1, the upper end of which is fixedly connected to a cylinder 2; two welding mechanisms 3, which are respectively mounted on the lower end of the cylinder 2 and the end of the welding frame 1 away from the cylinder 2; wherein the welding mechanism 3 comprises two welding heads 33, which are respectively mounted on the lower end of the cylinder 2 and the end of the welding frame 1 away from the cylinder 2, and the surface of the welding head 33 is provided with an annular groove 331, the inner wall of the annular groove 331 is provided with a clamping assembly 31, and the interior of the clamping assembly 31 is provided with an adsorption assembly 32;

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the clamping assembly 31 includes a clamping ring 311 sleeved on the surface of the welding head 33, the upper end of the clamping ring 311 is provided with a square hole 312, the square hole 312 matches the ring groove 331, the surface of the clamping ring 311 is fixedly connected to a connecting frame 313, the other end of the connecting frame 313 is fixedly connected to a closed cylinder 314, the inner wall of the closed cylinder 314 is slidably connected to a piston 316, the inner wall of the piston 316 is fixedly connected to a fixed tube 317, a sealing ring 315 is fixedly connected below the inner wall of the closed cylinder 314, the inner wall of the sealing ring 315 is slidably connected to the surface of the fixed tube 317, the surface of the fixed tube 317 is sleeved with a spring 318, and the fixed The surface of the tube 317 away from the closed cylinder 314 is fixedly connected with a base frame 319, the upper end of the spring 318 is fixedly connected to the lower end of the closed cylinder 314, and the lower end of the spring 318 is fixedly connected to the upper end of the base frame 319; the ring groove 331 cooperates with the square hole 312 to prevent the retaining ring 311 from rotating. When the welding head 33 is welding, the closed cylinder 314 is driven to connect with the retaining ring 311 through the connecting frame 313. When the welding head 33 is in progress, the base frame 319 will fit the surface of the workpiece to be processed. Through the action of the spring 318, the fixed tube 317 always drives the base frame 319 to form a preliminary positioning effect on the surface of the workpiece;

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, the adsorption component 32 includes a middle hole 321 opened at the upper end of the fixed tube 317, the inner wall of the middle hole 321 is fixedly connected with an inner partition 322, the lower end of the middle hole 321 is connected with a suction cup 326, the surface of the fixed tube 317 is provided with a jet port 325 and an air intake port 327, the air intake port 327 is located above the jet port 325, the air intake port 327 is connected with the interior of the closed cylinder body 314, the air intake port 327 is located below the piston 316, the other side of the inner partition 322 forms an adsorption bin 323 with the inner wall of the middle hole 321, the lower end of the adsorption bin 323 is connected with the suction cup 326, the adsorption bin 323 is connected with the air intake port 327, one side of the inner partition 322 forms a jet bin 324 with the inner wall of the middle hole 321, and the jet port 325 is connected with the jet bin 324. The suction cup 326 can be arranged so that when the base frame 319 is attached to the surface of the workpiece, the suction cup 326 contacts the surface of the workpiece first, and while the fixed tube 317 is gradually squeezed, the base frame 319 forms a secondary sealing effect on the suction cup 326 under the action of the spring 318. At this time, the suction cup 326 is firmly attached to the surface of the workpiece, and the area to be welded is positioned, so that the welding areas of the two metal workpieces are closely attached.

[0029] At the same time, when the welding head 33 approaches the surface of the workpiece, the piston 316 moves upward relatively inside the closed cylinder body 314, and the air pressure between the piston 316 and the sealing ring 315 is gradually reduced. Through the cooperation of the air intake port 327 and the adsorption chamber 323, the air pressure inside the suction cup 326 is synchronously reduced, so that the suction cup 326 is more firmly adsorbed on the surface of the workpiece to maintain the positioning effect of the workpiece. At the same time, when the piston 316 moves, the gas above the piston 316 will be squeezed to the outside through the jet chamber 324, and the gas will be ejected to the outside through the jet port 325. The gas is sprayed out through the jet port 325, and the area to be welded will be blown. The metal particles generated during the spot welding process can be moved away from the welding area under the action of the airflow blown out of the jet port 325 to reduce the influence of impurities on welding.

[0030] When the utility model is in use, during spot welding, the end of the welding head 33 approaches the surface of the workpiece, the suction cup 326 contacts the surface of the workpiece, and the edge of the suction cup 326 is pressed by the base frame 319, and the suction cup 326 is adsorbed on the surface of the workpiece. The fixing tube 317 makes the two metal workpieces welded in close contact with each other under the action of the spring 318, and at the same time, the piston 316 moves upward relatively inside the closed cylinder body 314, and the air pressure between the piston 316 and the sealing ring 315 gradually decreases. Through the cooperation of the air intake port 327 and the adsorption chamber 323, the air pressure inside the suction cup 326 decreases synchronously, and the suction cup 326 is firmly adsorbed on the workpiece, and the gas above the piston 316 is squeezed to the outside through the jet chamber 324, and the gas is ejected to the outside through the jet port 325. The gas is sprayed outward to blow away impurities in the welding area, thereby reducing the influence of impurities on welding.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A positioning device for a C-type welding clamp, It is characterized in that include: A welding frame (1), the upper end of which is fixedly connected to a cylinder (2); Two welding mechanisms (3), the two welding mechanisms (3) being respectively mounted on the lower end of the cylinder (2) and the end of the welding frame (1) away from the cylinder (2); The welding mechanism (3) comprises two welding heads (33), the two welding heads (33) being respectively mounted on the lower end of the cylinder (2) and the end of the welding frame (1) away from the cylinder (2), the surface of the welding head (33) being provided with an annular groove (331), the inner wall of the annular groove (331) being provided with a clamping assembly (31), and the interior of the clamping assembly (31) being provided with an adsorption assembly (32).

2. A positioning device for a C-type welding tongs according to claim 1, Features: The clamping assembly (31) comprises a clamping ring (311) sleeved on the surface of the welding head (33); a square hole (312) is formed at the upper end of the clamping ring (311); the square hole (312) matches the ring groove (331); a connecting frame (313) is fixedly connected to the surface of the clamping ring (311); the other end of the connecting frame (313) is fixedly connected to a sealed cylinder body (314); a piston (316) is slidably connected to the inner wall of the sealed cylinder body (314); and a fixed tube (317) is fixedly connected to the inner wall of the piston (316).

3. A positioning device for a C-type welding tongs according to claim 2, Features: The adsorption assembly (32) includes a middle hole (321) opened at the upper end of the fixed tube (317), the inner wall of the middle hole (321) is fixedly connected with an inner partition (322), the lower end of the middle hole (321) is connected with a suction cup (326), and the surface of the fixed tube (317) is provided with an air jet (325) and an air intake (327), the air intake (327) is located above the air jet (325), the air intake (327) is connected with the interior of the closed cylinder body (314), and the air intake (327) is located below the piston (316).

4. A positioning device for a C-type welding tongs according to claim 2, Features: A sealing ring (315) is fixedly connected to the lower part of the inner wall of the sealed cylinder (314), and the inner wall of the sealing ring (315) is slidably connected to the surface of the fixed pipe (317).

5. A positioning device for a C-type welding tongs according to claim 2, Features: A spring (318) is sleeved on the surface of the fixed tube (317), and a bottom frame (319) is fixedly connected to the surface of the fixed tube (317) away from the sealed cylinder body (314).

6. A positioning device for a C-type welding tongs according to claim 5, Features: The upper end of the spring (318) is fixedly connected to the lower end of the sealed cylinder (314), and the lower end of the spring (318) is fixedly connected to the upper end of the base frame (319).

7. A positioning device for a C-type welding tongs according to claim 3, Features: The other side of the inner partition (322) and the inner wall of the middle hole (321) form an adsorption bin (323), the lower end of the adsorption bin (323) is connected to the suction cup (326), and the adsorption bin (323) is connected to the air intake port (327).

8. A positioning device for a C-type welding tongs according to claim 3, Features: One side of the inner partition plate (322) and the inner wall of the middle hole (321) form an injection chamber (324), and the injection port (325) is in communication with the injection chamber (324).

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