A robot welding gun calibration device

Abstract

The present invention provides a robot welding gun correction device, which relates to the technical field of welding gun correction. The robot welding gun correction device comprises a correction wheel, which reciprocates along with a correction slide groove arranged on a positioning member, a clamping plate is arranged on one side of the positioning member, a push plate is arranged on the lower side of the clamping plate, a connecting rod is arranged on the lower side of the push plate, and a return spring is arranged on the curved surface of the connecting rod, the cross-section of the positioning member is L-shaped, and a correction slide groove is opened inside one side of the positioning member; the welding gun fixed at one end of the robot moves to the upper side of the push plate and moves downward with the movement of the robot, and as the push plate moves downward, the clamping plates on both sides of the upper end of the push plate move synchronously towards each other and fix the welding gun, and at the same time, the return spring on the lower side of the push plate is forced to shrink to fix the welding gun, and then the welding gun is covered in the middle of the two correction wheels, and the correction wheels are made to reciprocate along the correction slide groove to realize rapid correction of the welding gun.

Description

Technical Field

[0001] The invention relates to the technical field of welding gun calibration, in particular to a robot welding gun calibration device. Background Art

[0002] The robotic welding gun is a commonly used automated tool in automobile assembly. During the normal use of the robotic welding gun, it is common for the welding gun to collide with the workpiece. Once the welding gun touches the workpiece, it may cause the welding gun to deform, and the original welding trajectory of the robotic welding gun will change, which will cause the robot to be unable to accurately weld the weld.

[0003] When calibrating the welding gun, the welding gun needs to be fixed to ensure that the welding gun does not shake during the calibration. However, some existing calibration devices need to be fixed with bolts, resulting in low efficiency in fixing the welding gun. At the same time, when calibrating the welding gun, a calibrator is generally used to frequently calibrate and adjust the welding gun, resulting in low efficiency in adjusting the welding gun. Therefore, a robot welding gun calibration device is urgently needed to improve the efficiency of welding gun calibration. Summary of the invention

[0004] The object of the present invention is to provide a robot welding gun calibration device, aiming to solve the problem that some calibration devices in the prior art need to be fixed with bolts, resulting in low efficiency of welding gun fixing; at the same time, when calibrating the welding gun, a calibrator is generally used to frequently calibrate and adjust the welding gun, resulting in low adjustment efficiency of the welding gun.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a robot welding gun correction device, including a correction wheel, which reciprocates along a correction slide groove arranged on a positioning member, a clamping plate is arranged on one side of the positioning member, a push plate is arranged on the lower side of the clamping plate, a connecting rod is arranged on the lower side of the push plate, and a return spring is arranged on the curved surface of the connecting rod.

[0006] Furthermore, a further technical solution of the present invention is that the cross-section of the positioning member is L-shaped, a correction groove is provided inside one side of the positioning member, a connecting shaft is slidably connected inside the correction groove, and a correction wheel is sleeved on the middle part of the connecting shaft.

[0007] Furthermore, a further technical solution of the present invention is that handles are fixedly connected to both ends of the connecting shaft, and a first slot is provided on the opposite side of the handle, and the spring is connected with the spring through the first slot.

[0008] Furthermore, a further technical solution of the present invention is that a spring sheet is clamped on the inner side of the first clamping slot, and one end of the spring sheet is detachably connected to the positioning member by a bolt.

[0009] Furthermore, a further technical solution of the present invention is that a clamping block is fixedly connected to the other side of the positioning member, a second limiting groove is clamped on one side of the clamping block, and the second limiting groove is provided on both sides of the fixing member.

[0010] Furthermore, a further technical solution of the present invention is that a fourth limiting groove, a third limiting groove and a first limiting groove are sequentially opened inside the fixing member.

[0011] Furthermore, a further technical solution of the present invention is that the curved surface of the fourth limit groove is sleeved with a connecting rod, the curved surface of one end of the connecting rod is sleeved with a return spring, the curved surface of the return spring is sleeved on the inner surface of the third limit groove, and the upper end of the third limit groove is slidably connected to a limiting plate.

[0012] Furthermore, a further technical solution of the present invention is that the upper end of the connecting rod is fixedly connected to a push plate, connecting plates are hinged on both sides of the push plate, one end of the connecting plate is hinged to a connecting block, and the upper end of the connecting block is fixedly connected to a clamping plate.

[0013] Furthermore, a further technical solution of the present invention is that the sliding connection of the clamping plate is on the curved surface of the slide groove, the slide groove is provided with an upper end of a fixing piece and is fixed by a fixing plate.

[0014] Furthermore, a further technical solution of the present invention is that the connecting plate is sleeved inside the fifth limiting groove, the fifth limiting groove is opened inside the fixing member, and has a cross-section that is an inverted isosceles trapezoid with the first limiting groove.

[0015] The beneficial effects of the present invention are:

[0016] The welding gun fixed at one end of the robot moves to the upper side of the push plate and moves downward with the movement of the robot. As the push plate moves downward, the clamping plates on both sides of the upper side of the push plate move toward each other synchronously and fix the welding gun. At the same time, the reset spring on the lower side of the push plate contracts under the force to fix the welding gun. Then the welding gun is put in the middle of the two correction wheels, and the correction wheels are reciprocated along the correction slide groove to achieve rapid correction of the welding gun. When the welding gun moves upward, the reset spring drives the push plate to move upward and makes the two clamping plates move synchronously relative to each other, so that the welding gun is separated from the correction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional main structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the correction bracket of the present invention;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the correction part of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing part of the present invention;

[0021] Figure 5 is a schematic diagram of a three-dimensional cross-sectional structure of a fixing member of the present invention;

[0022] Figure 6 The present invention Figure 5 A is an enlarged structural diagram of FIG.

[0023] In the figure: 1, fixing member; 2, push plate; 3, first limiting groove; 4, fixing plate; 5, second limiting groove; 6, clamping block; 7, positioning member; 8, correction slide groove; 9, handle; 91, first clamping slot; 10, spring; 11, connecting shaft; 12, reset spring; 13, correction wheel; 14, slide groove; 15, clamping plate; 17, limiting plate; 18, third limiting groove; 19, connecting rod; 20, fourth limiting groove; 21, connecting block; 22, connecting plate; 23, fifth limiting groove. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] like Figure 1-6 As shown, a robot welding gun correction device includes a correction wheel 13, which reciprocates along the correction slide groove 8 arranged on the positioning member 7. A clamping plate 15 is arranged on one side of the positioning member 7, and a push plate 2 is arranged on the lower side of the clamping plate 15. A connecting rod 19 is arranged on the lower side of the push plate 2, and a return spring 12 is arranged on the curved surface of the connecting rod 19. Under the action of the gravity of the welding gun, the push plate 2 is driven to move downward, and the clamping plates 15 and the return spring 12 at both ends of the push plate 2 move synchronously. The clamping plate 15 fixes the welding gun and the return spring 12 is contracted by force, so that the push plate 2 that loses gravity can automatically return to the upper position.

[0026] In this specific embodiment, the welding gun fixed at one end of the robot moves to the upper side of the push plate 2 and moves downward with the movement of the robot. As the push plate 2 moves downward, the clamping plates 15 on both sides of the upper end of the push plate 2 move toward each other synchronously and fix the welding gun. At the same time, the return spring 12 on the lower side of the push plate 2 is forced to shrink to fix the welding gun. Then the welding gun is put in the middle of the two correction wheels 13, and the correction wheels 13 are reciprocated along the correction slide groove 8 to achieve rapid correction of the welding gun. When the welding gun moves upward, the return spring 12 drives the push plate 2 to move upward and makes the two clamping plates 15 move synchronously relative to each other, so that the welding gun is separated from the correction device.

[0027] In another specific embodiment of the present invention, the cross-section of the positioning member 7 is L-shaped, and a correction groove 8 is opened inside one side of the positioning member 7. A connecting shaft 11 is slidably connected inside the correction groove 8. A correction wheel 13 is sleeved on the middle part of the connecting shaft 11. The correction wheel 13 reciprocates along the length direction of the correction groove 8 to calibrate the welding gun.

[0028] Specifically, the two ends of the connecting shaft 11 are fixedly connected with the handle 9, and a first slot 91 is provided on the opposite side of the handle 9. The first slot 91 is engaged with the spring piece 10 to fix the correction wheel 13 so that the correction wheel 13 remains stable.

[0029] Specifically, a spring piece 10 is clamped on the inner side of the first clamping slot 91 , and one end of the spring piece 10 is detachably connected to the positioning member 7 via a bolt, so that the spring piece 10 can be easily replaced, thereby extending the service life of the equipment and reducing costs.

[0030] Specifically, a clamping block 6 is fixedly connected to the other side of the positioning member 7, and a second limiting groove 5 is clamped on one side of the clamping block 6. The second limiting groove 5 is opened on both sides of the fixing member 1. The correction part can be quickly replaced through the second limiting groove 5, and welding guns of different specifications can be calibrated.

[0031] Specifically, the fixing member 1 has a fourth limiting groove 20, a third limiting groove 18 and a first limiting groove 3 in sequence, and the axes of the fourth limiting groove 20, the third limiting groove 18 and the first limiting groove 3 are distributed on the same straight line and are distributed in a stepped manner from bottom to top.

[0032] Specifically, the curved surface of the fourth limiting groove 20 is sleeved with a connecting rod 19, and the curved surface at one end of the connecting rod 19 is sleeved with a reset spring 12. The reset spring 12 facilitates the separation of the welding gun and improves the correction efficiency of the welding gun. The curved surface of the reset spring 12 is sleeved on the inner surface of the third limiting groove 18. The upper end of the third limiting groove 18 is slidably connected to a limiting plate 17. The limiting plate 17 limits the position of the connecting rod 19 so that the connecting rod 19 does not shake during movement, thereby allowing the clamping plates 15 on both sides to move synchronously.

[0033] Specifically, the upper end of the connecting rod 19 is fixedly connected to the push plate 2, and connecting plates 22 are hinged on both sides of the push plate 2. One end of the connecting plate 22 is hinged to a connecting block 21, and the upper end of the connecting block 21 is fixedly connected to a clamping plate 15. An arc-shaped clamping groove is provided on one side of the clamping plate 15 to improve the stability of the connection to the welding gun.

[0034] Specifically, the clamping plate 15 is slidably connected to the curved surface of the slide groove 14 , and the slide groove 14 is provided with the upper end of the fixing member 1 and is fixed by the fixing plate 4 .

[0035] Specifically, the connecting plate 22 is sleeved inside the fifth limiting groove 23 . The fifth limiting groove 23 is provided inside the fixing member 1 and has a cross section that is an inverted isosceles trapezoid with the first limiting groove 3 .

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0038] 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 robot welding gun calibration device, Features: The invention comprises a correction wheel (13), wherein the correction wheel (13) reciprocates along a correction slot (8) arranged on a positioning member (7), a clamping plate (15) is arranged on one side of the positioning member (7), a push plate (2) is arranged on the lower side of the clamping plate (15), a connecting rod (19) is arranged on the lower side of the push plate (2), and a return spring (12) is arranged on the curved surface of the connecting rod (19); The cross section of the positioning member (7) is L-shaped, a correction slide groove (8) is provided inside one side of the positioning member (7), a connecting shaft (11) is slidably connected inside the correction slide groove (8), and a correction wheel (13) is sleeved in the middle of the connecting shaft (11); The other side of the positioning member (7) is fixedly connected with a clamping block (6), one side of the clamping block (6) is clamped with a second limiting groove (5), and the second limiting groove (5) is provided on two sides of the fixing member (1); The fixing member (1) is provided with a fourth limiting groove (20), a third limiting groove (18) and a first limiting groove (3) in sequence; The curved surface of the fourth limiting groove (20) is sleeved with a connecting rod (19), the curved surface of one end of the connecting rod (19) is sleeved with a return spring (12), the curved surface of the return spring (12) is sleeved on the inner surface of the third limiting groove (18), and the upper end of the third limiting groove (18) is slidably connected to the limiting plate (17); The upper end of the connecting rod (19) is fixedly connected to a push plate (2), both sides of the push plate (2) are hingedly connected to connecting plates (22), one end of the connecting plate (22) is hingedly connected to a connecting block (21), and the upper end of the connecting block (21) is fixedly connected to a clamping plate (15).

2. A robot welding gun calibration device as claimed in claim 1, Features: The two ends of the connecting shaft (11) are fixedly connected to a handle (9), and a first clamping groove (91) is provided on the opposite side of the handle (9), and the spring sheet (10) is clamped through the first clamping groove (91).

3. A robot welding gun calibration device as claimed in claim 2, Features: A spring sheet (10) is clamped on the inner side of the first clamping slot (91), and one end of the spring sheet (10) is detachably connected to the positioning member (7) via a bolt.

4. A robot welding gun calibration device as claimed in claim 1, Features: The clamping plate (15) is slidably connected to the curved surface of the slide groove (14), and the slide groove (14) is provided with an upper end of a fixing member (1) and is fixed by a fixing plate (4).

5. A robot welding gun calibration device as claimed in claim 1, Features: The connecting plate (22) is sleeved inside the fifth limiting groove (23); the fifth limiting groove (23) is arranged inside the fixing member (1) and has a cross section that is an inverted isosceles trapezoid with the cross section of the first limiting groove (3).

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