Self-adaptive robot welding clamp

Abstract

The utility model discloses a self-adaptive robot welding clamp, and relates to the technical field of clamps. The fixture comprises a mounting frame and a fixture structure, comprising a ring seat, a rotating ring rotationally installed in the ring seat, a second gear ring connected to the outer wall of the rotating ring in a sleeving mode, a hydraulic rod fixedly arranged on one side of the ring seat, a toothed plate connected with the telescopic end of the hydraulic rod and attached to the second gear ring, extrusion blocks distributed on the inner wall of the rotating ring in an annular array mode, and a connecting ring located on the inner wall of the ring seat. The sliding seat supports are distributed on the inner wall of the connecting ring in an annular array mode, the guide rods are inserted into the sliding seat supports in a sliding mode, and the clamping blocks are located at one ends of the guide rods. And; the adjusting structure comprises a supporting ring, a motor fixedly arranged on one side of the upper end of the mounting frame and a rotating shaft located at the lower end of the motor and rotationally mounted in the mounting frame. By arranging the clamp structure and the adjusting structure, the problem that when a tubular structure is welded, two-point clamping cannot meet the requirement for stability of a workpiece in the welding process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures, in particular to an adaptive robot welding fixture. Background Art

[0002] Robotic welding is the use of robots in automated welding systems to perform welding operations. This automation technology is efficient, precise and reliable, and is suitable for large-scale production and repetitive welding tasks. Fixtures play a key role in robotic welding, ensuring that the workpiece is accurately positioned and used to fix the workpiece to ensure correct position and stability.

[0003] A Chinese patent discloses an adaptive robotic welding fixture (authorization announcement number CN221538722U). The patented technology includes a base, the upper end of which is fixedly connected to a workbench, the upper end of which is located outside the workbench and fixedly connected to four evenly distributed support rods, the upper ends of which are fixedly connected to a top plate, the upper end of which is fixedly connected to a cylinder, and the output end of the cylinder is slidably connected to the top plate. The utility model designs the function of the cylinder, so that the output end of the cylinder can drive the pressure block to move downward, and the contact between the pressure block and the roller can push the roller to deflect along the connecting seat, so that the wheel frame can drive the clamping block to move in the direction close to the workpiece, so that the workpiece can be clamped. The deflection angle of the wheel frame can be adjusted by the downward displacement of the pressure block, so that it can automatically adapt to workpieces of different sizes for clamping and positioning, and the clamping is more stable. In addition, the two wheel frames keep moving synchronously, so that the workpiece can be positioned at the center of the workbench.

[0004] This patented technology clamps and positions the workpiece by squeezing during use to ensure the stability of the workpiece during welding. However, there are still some shortcomings during use. There are limitations when clamping the workpiece with only two clamping blocks. When welding tubular structures, the two-point clamping cannot meet the stability of the workpiece during welding. There is a situation where the workpiece shakes during welding and affects the welding. Therefore, those skilled in the art provide an adaptive robot welding fixture to solve the problems raised in the above background technology. Utility Model Content

[0005] 1. Technical solution

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is an adaptive robot welding fixture, comprising a mounting frame,

[0008] The fixture structure includes a symmetrically distributed ring seat, a rotating ring rotatably mounted inside the ring seat, a second gear ring sleeved on the outer wall of the rotating ring, a hydraulic rod fixed to one side of the ring seat, a gear plate connected to the telescopic end of the hydraulic rod and in contact with the second gear ring, extrusion blocks distributed in an annular array on the inner wall of the rotating ring, a connecting ring located on the inner wall of the ring seat, a slide bracket distributed in an annular array on the inner wall of the connecting ring, a guide rod slidably inserted into the interior of the slide bracket, and a clamping block located at one end of the guide rod;

[0009] as well as;

[0010] The adjustment structure includes symmetrically distributed support rings, a motor fixed on one side of the upper end of the mounting frame, and a rotating shaft located at the lower end of the motor and rotatably installed inside the mounting frame.

[0011] Furthermore, the inner wall of the extrusion block is inclined, a ball is embedded in one end of the guide rod, and a moving opening is provided inside the support ring;

[0012] Specifically, the extrusion block squeezes the ball through the inclined surface, and the ball can rotate inside, thereby reducing the resistance of the extrusion block to the guide rod when squeezing, and the workpiece outlet is used to place the welded parts inside the ring seat.

[0013] Furthermore, a limit ring is sleeved on the outer wall of the guide rod, and a spring is sleeved on the outer side of the guide rod, with two ends respectively connected to the limit ring and the slide bracket;

[0014] Specifically, the limiting ring elastically supports one end of the spring, so that the elastic force of the spring acts on the slide bracket through the limiting ring, and further acts on the guide rod.

[0015] Furthermore, the outer wall of the ring seat is provided with connecting rods distributed in an annular array and connected to the outer wall of the support ring;

[0016] Specifically, the ring seat and the support ring are fixed together via a connecting rod.

[0017] Furthermore, the lower end of the support ring is provided with pulleys distributed in an annular array, the inner wall of the mounting frame is provided with two sets of guide rails distributed in an annular array, and the pulleys are rotatably mounted inside the guide rails;

[0018] Specifically, when the support ring rotates, the pulley rolls inside the guide rail, and the support ring is supported in rotation.

[0019] Furthermore, the outer wall of the rotating shaft is sleeved with symmetrically distributed gears, and the outer wall of the supporting ring is sleeved with a gear ring 1 that meshes with the gears;

[0020] Specifically, when the gear rotates, the rotational force acts on the ring gear, exerting a driving force on the rotating ring, and the rotating ring realizes rotation adjustment.

[0021] 2. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] In the utility model, the workpiece is placed inside the ring seat, and the guide rod is squeezed by the squeezing block, thereby driving the clamping block to clamp the outer wall of the workpiece, so that the workpiece is clamped and fixed during robot welding;

[0024] At the same time, the clamping blocks are distributed in a circular array and move synchronously. When clamping the outer wall of the tubular structure, multi-point equidistant clamping is performed to adapt to the specifications of the tubular structure and perform adaptive multi-point clamping and fixing, thereby ensuring the stability of the tubular structure during welding.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0028] Figure 2 This is a bottom-up three-dimensional structural diagram of the clamp structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the main three-dimensional structure of the rotating shaft of the present invention;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the ring seat of the utility model from a top view;

[0031] Figure 5 It is a schematic diagram of the partial main cross-sectional three-dimensional structure of the ring seat of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0033] 100. Mounting frame;

[0034] 200, adjustment structure; 201, support ring; 202, pulley; 203, connecting rod; 204, guide rail; 205, gear ring 1; 206, feed port; 207, motor; 208, rotating shaft; 209, gear;

[0035] 300. Clamp structure; 301. Hydraulic rod; 302. Ring seat; 303. Tooth plate; 304. Gear ring 2; 305. Extrusion block; 306. Connecting ring; 307. Clamping block; 308. Rotating ring; 309. Sliding seat bracket; 310. Guide rod; 311. Spring; 312. Limiting ring; 313. Ball. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0037] Example 1

[0038] See also Figure 1-Figure 5 As shown, this embodiment is an adaptive robot welding fixture, including a mounting frame 100,

[0039] The fixture structure 300 includes a symmetrically arranged ring seat 302, a rotating ring 308 rotatably mounted within the ring seat 302, a second gear ring 304 sleeved onto the outer wall of the rotating ring 308, a hydraulic rod 301 fixed to one side of the ring seat 302, a gear plate 303 connected to the telescopic end of the hydraulic rod 301 and in contact with the second gear ring 304, extrusion blocks 305 distributed in an annular array on the inner wall of the rotating ring 308, a connecting ring 306 located on the inner wall of the ring seat 302, a slide bracket 309 distributed in an annular array on the inner wall of the connecting ring 306, a guide rod 310 slidably inserted into the interior of the slide bracket 309, and a clamping block 307 located at one end of the guide rod 310;

[0040] The inner wall of the extrusion block 305 is inclined, a ball 313 is embedded in one end of the guide rod 310, and a moving port 206 is provided inside the support ring 201;

[0041] The outer wall of the guide rod 310 is sleeved with a limit ring 312, and the outer side of the guide rod 310 is sleeved with a spring 311 whose two ends are respectively connected to the limit ring 312 and the slide bracket 309;

[0042] Performing use of the clamp structure 300;

[0043] The tubular structure is located inside the clamping block 307. The hydraulic rod 301 operates to drive the gear plate 303 to move back and forth. The gear plate 303 includes a travel plate and a rack. The travel plate moves with the telescopic end of the hydraulic rod 301, thereby driving the rack to push the gear ring 2 304. The gear ring 2 304 is supported by the rotating ring 308 inside the ring seat 302. The rotating ring 308 drives the extrusion block 305 to rotate. The extrusion block 305 fits the outer wall of the ball 313, and the extrusion force acts on the guide rod 310 and the spring On 311, the spring 311 is forced to contract, and the guide rod 310 is forced to move toward the workpiece, driving the clamping block 307 to gradually fit the outer wall of the workpiece, and multi-point clamping is performed on the outer wall of the gap of the tubular structure. When the tubular structure is clamped, the multi-point clamping is distributed in a circular array, avoiding the problem of insufficient stability of two-point clamping when welding tubular structures. Two-point clamping is performed on the plate structure. When the welding robot performs automatic welding on the workpiece, adaptive adjustment is achieved when clamping the tubular structure, and the flexibility of the use process is improved.

[0044] Example 2

[0045] See also Figure 1-Figure 5 As shown, this embodiment is based on embodiment 1 and also includes:

[0046] as well as;

[0047] The adjustment structure 200 includes symmetrically distributed support rings 201 , a motor 207 fixed to one side of the upper end of the mounting frame 100 , and a rotating shaft 208 located at the lower end of the motor 207 and rotatably mounted inside the mounting frame 100 .

[0048] The outer wall of the ring seat 302 is provided with connecting rods 203 distributed in an annular array and connected to the outer wall of the support ring 201;

[0049] The lower end of the support ring 201 is provided with pulleys 202 distributed in an annular array. The inner wall of the mounting frame 100 is provided with two sets of guide rails 204 distributed in an annular pattern. The pulleys 202 are rotatably mounted inside the guide rails 204.

[0050] The outer wall of the rotating shaft 208 is sleeved with symmetrically distributed gears 209, and the outer wall of the supporting ring 201 is sleeved with a gear ring 1 205 that meshes with the gears 209;

[0051] Performing the use of the adjustment structure 200;

[0052] The motor 207 drives the rotating shaft 208 to rotate, and the rotating shaft 208 drives the gear 209 to push the ring gear 205, thereby driving the support ring 201 to rotate. The support ring 201 drives the ring seat 302 to rotate through the connecting rod 203. When the ring seat 302 rotates, it drives the clamped workpiece to rotate, and the clamped workpiece can be rotationally adjusted during welding. In particular, when welding tubular workpieces, the tubular workpiece can be rotationally adjusted. When welding tubular workpieces in annular surface butt joints, the rotating workpiece provides assistance for welding and compensates for the rotation stroke of the welding arm of the welding robot.

[0053] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An adaptive robot welding fixture, characterized by: comprising a mounting frame (100), The clamp structure (300) comprises a symmetrically distributed ring seat (302), a rotating ring (308) rotatably mounted inside the ring seat (302), a second gear ring (304) sleeved on the outer wall of the rotating ring (308), a hydraulic rod (301) fixed on one side of the ring seat (302), a tooth plate (303) connected to the telescopic end of the hydraulic rod (301) and fitted with the second gear ring (304), an extrusion block (305) distributed in an annular array on the inner wall of the rotating ring (308), a connecting ring (306) located on the inner wall of the ring seat (302), a slide bracket (309) distributed in an annular array on the inner wall of the connecting ring (306), a guide rod (310) slidably inserted into the interior of the slide bracket (309), and a clamping block (307) located at one end of the guide rod (310); as well as; The regulating structure (200) comprises symmetrically distributed support rings (201), a motor (207) fixed to one side of the upper end of the mounting frame (100), and a rotating shaft (208) located at the lower end of the motor (207) and rotatably mounted inside the mounting frame (100).

2. The adaptive robot welding fixture according to claim 1, characterized in that: The inner wall of the extrusion block (305) is inclined, a ball (313) is embedded and installed inside one end of the guide rod (310), and a running port (206) is provided inside the support ring (201).

3. The adaptive robot welding fixture according to claim 1, characterized in that: The outer wall of the guide rod (310) is sleeved with a limit ring (312), and the outer side of the guide rod (310) is sleeved with a spring (311) whose two ends are respectively connected to the limit ring (312) and the slide bracket (309).

4. The adaptive robot welding fixture according to claim 1, characterized in that: The outer wall of the ring seat (302) is provided with connecting rods (203) distributed in an annular array and connected to the outer wall of the support ring (201).

5. The adaptive robot welding fixture according to claim 1, characterized in that: The lower end of the support ring (201) is provided with pulleys (202) distributed in an annular array, the inner wall of the mounting frame (100) is provided with two groups of guide rails (204) distributed in an annular array, and the pulleys (202) are rollingly installed inside the guide rails (204).

6. The adaptive robot welding fixture according to claim 1, characterized in that: The outer wall of the rotating shaft (208) is sleeved with symmetrically distributed gears (209), and the outer wall of the supporting ring (201) is sleeved with a gear ring (205) that meshes with the gears (209).

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