Positioning mechanism for welding stud by robot

Abstract

The utility model relates to a positioning mechanism for welding a stud by a robot. The positioning mechanism comprises a supporting seat; the first clamping block is fixedly connected with the supporting seat; the second clamping block is movably connected with the supporting seat; one end of the first metal positioning block is provided with a cavity for placing a stud, and the first metal positioning block is movably connected with the supporting seat; the second metal positioning block is fixedly connected with the second clamping block; the pressing driving mechanism is connected with the second clamping block; and the positioning driving mechanism is connected with the first metal positioning block. A stud is placed in a cavity of a second metal positioning block, a first metal positioning block is driven to be close to the outer surface of a workpiece, and a robot electrode holder conducts power-on welding through a circuit formed by the first metal positioning block and the second metal positioning block. The stud is positioned through the first metal positioning block and the second metal positioning block, so that welding is more stable, and the production efficiency is higher.

Description

Technical Field

[0001] This application relates to the field of stud welding, and in particular to a positioning mechanism for robotic stud welding. Background Technology

[0002] In modern manufacturing, stud welding technology is widely used in automobile manufacturing, metal structure assembly, and other fields. The stud welding process typically involves fixing studs to workpieces, a process that demands high welding precision and stability. Traditional stud welding methods rely heavily on manual operation, resulting in inconsistent weld quality, low production efficiency, and high labor intensity for operators. Summary of the Invention

[0003] This application provides a positioning mechanism for robotic welding studs to solve the problems of traditional stud welding methods that mainly rely on manual operation, resulting in unstable welding quality, low production efficiency, and high labor intensity for operators.

[0004] In a first aspect, a positioning mechanism for robotic welding studs is provided, comprising:

[0005] Support base;

[0006] The first clamping block is fixedly connected to the support base;

[0007] The second clamping block is movably connected to the support base;

[0008] The first metal positioning block has a cavity at one end for placing the stud, and is movably connected to the support base;

[0009] The second metal positioning block is fixedly connected to the second clamping block;

[0010] A clamping drive mechanism, connected to the second clamping block, is used to drive the second clamping block to move closer to or away from the first clamping block to clamp or release the workpiece;

[0011] A positioning drive mechanism, connected to the first metal positioning block, is used to drive the first metal positioning block closer to the workpiece to position the stud.

[0012] The clamping drive mechanism includes a clamping cylinder fixedly mounted on the support base, and the output shaft of the clamping cylinder is fixedly connected to the second clamping block.

[0013] In some embodiments, a connecting seat is fixedly connected to the upper end of the second clamping block, the connecting seat is fixedly connected to the output shaft of the clamping cylinder, an adjusting seat is fixedly installed on the connecting seat, and an mounting plate is fixedly installed between the adjusting seat and the second metal positioning block.

[0014] In some embodiments, a protrusion is fixedly installed on the support base, and a recess matching the protrusion is fixedly installed at the lower end of the connecting base.

[0015] In some embodiments, the positioning drive mechanism includes a fixed base fixedly mounted on the support base, a positioning cylinder fixedly mounted on the fixed base, and the output shaft of the positioning cylinder fixedly connected to the first metal positioning block.

[0016] In some embodiments, the output shaft of the positioning cylinder is fixedly connected to a mounting base, at least one guide post is fixedly mounted on the mounting base, the guide post is parallel to the output shaft of the positioning cylinder, the mounting base is provided with a guide groove for the guide post to slide, and the first metal positioning block is fixedly connected to the mounting base.

[0017] In some embodiments, a first limiting block is fixedly installed on the fixing base.

[0018] In some embodiments, a second limiting block is fixedly installed on the support base.

[0019] In some embodiments, the first clamping block and the second clamping block are provided with elastic pressure blocks on one side close to each other.

[0020] In some embodiments, both the first metal positioning block and the second metal positioning block are made of copper.

[0021] This application provides a positioning mechanism for robotic welding studs. During welding, the workpiece is placed between a first clamping block and a second clamping block. A clamping drive mechanism fixes the workpiece in place by the second clamping block. Simultaneously, a first metal positioning block abuts against the inner surface of the workpiece. Then, the stud is placed in the cavity of the second metal positioning block. The positioning drive mechanism drives the first metal positioning block closer to the outer surface of the workpiece. The robotic welding gun performs welding through the circuit formed by the first and second metal positioning blocks, welding the stud onto the workpiece. Compared to traditional welding techniques that require manual operation with a welding torch, this application uses the first and second metal positioning blocks to position the stud, resulting in more stable welding and higher production efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the positioning mechanism for robot welding studs during welding, provided in an embodiment of this application.

[0024] Figure 2 This is a schematic diagram of the positioning mechanism for a robot welding stud provided in an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the positioning mechanism for a robot welding stud provided in an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the first metal block structure provided in an embodiment of this application.

[0027] In the diagram: 1. Support base; 2. First clamping block; 3. Second clamping block; 4. First metal positioning block; 401. Cavity; 5. Second metal positioning block; 6. Pressing drive mechanism; 601. Pressing cylinder; 7. Positioning drive mechanism; 701. Fixed base; 702. Positioning cylinder; 703. Guide column; 704. Mounting base; 705. Guide groove; 8. Connecting base; 9. Adjusting base; 10. Mounting plate; 11. Concave block; 12. Protruding block; 13. First limiting block; 14. Second limiting block; 15. Elastic pressure block; 16. Workpiece; 17. Welding clamp. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] This application provides a positioning mechanism for robotic welding studs, which solves the problems of traditional stud welding methods that mainly rely on manual operation, resulting in unstable welding quality, low production efficiency, and high labor intensity for operators.

[0030] A positioning mechanism for robotic welding studs, such as Figures 1 to 4 As shown, it includes:

[0031] Support 1;

[0032] The first clamping block 2 is fixedly connected to the support base 1;

[0033] The second clamping block 3 is movably connected to the support base 1;

[0034] The first metal positioning block 4 has a cavity 401 at one end for placing the stud, and is movably connected to the support base 1. The inner diameter of the cavity 401 is equal to the diameter of the stud to be welded.

[0035] The second metal positioning block 5 is fixedly connected to the second clamping block 3;

[0036] The clamping drive mechanism 6 is connected to the second clamping block 3 and is used to drive the second clamping block 3 to move closer to or away from the first clamping block 2 to clamp or release the workpiece 16.

[0037] The positioning drive mechanism 7 is connected to the first metal positioning block 4 and is used to drive the first metal positioning block 4 to approach the workpiece 16 to position the stud.

[0038] During welding, the workpiece 16 is placed between the first clamping block 2 and the second clamping block 3. The clamping drive mechanism 6 fixes the workpiece 16 in place with the second clamping block 3. Simultaneously, the first metal positioning block 4 abuts against the inner surface of the workpiece 16. Then, a stud is placed in the cavity 401 of the second metal positioning block 5. The positioning drive mechanism 7 drives the first metal positioning block 4 closer to the outer surface of the workpiece 16. The robotic welding gun 17 performs welding through the circuit formed by the first metal positioning block 4 and the second metal positioning block 5, welding the stud onto the workpiece 16. Compared to traditional welding techniques that require manual operation with a welding gun, this application uses the first metal positioning block 4 and the second metal positioning block 5 to position the stud, resulting in more stable welding and higher production efficiency.

[0039] In this embodiment, the clamping drive mechanism 6 includes a clamping cylinder 601 fixedly mounted on the support base 1, and the output shaft of the clamping cylinder 601 is fixedly connected to the second clamping block 3.

[0040] In some alternative embodiments, the clamping drive mechanism 6 is a hydraulic cylinder or an electric cylinder.

[0041] In this embodiment, a connecting seat 8 is fixedly connected to the upper end of the second clamping block 3. The connecting seat 8 is fixedly connected to the output shaft of the clamping cylinder 601. An adjusting seat 9 is fixedly installed on the connecting seat 8. An mounting plate 10 is fixedly installed between the adjusting seat 9 and the second metal positioning block 5. The mounting plate 10 is used to install the second metal positioning block 5.

[0042] In some alternative embodiments, the mounting plate 10 is a flexible steel sheet, allowing the adjusting seat 9 to deform to adapt to the shape of the inner surface of the workpiece 16, ensuring a tight fit and support. To match the shape of the workpiece 16, the first clamping block 2 and the second clamping block 3 are U-shaped, with the open area in the middle of the U-shape accommodating the first metal positioning block 4 and the second metal positioning block 5, providing a position for clamping the workpiece 16 and welding the studs.

[0043] In this embodiment, a protrusion 12 is fixedly installed on the support base 1, and a concave block 11 matching the protrusion 12 is fixedly installed at the lower end of the connecting base 8.

[0044] Alternatively, a recess 11 is fixedly installed on the support base 1, and a protrusion 12 matching the recess 11 is fixedly installed at the lower end of the connecting base 8.

[0045] The concave block 11 and the convex block 12 cooperate to limit the connection seat 8, preventing the second clamping block 3 from shaking during clamping, thereby improving the overall stability and reliability.

[0046] In this embodiment, the positioning drive mechanism 7 includes a fixed base 701 fixedly installed on the support base 1, a positioning cylinder 702 fixedly installed on the fixed base 701, and the output shaft of the positioning cylinder 702 fixedly connected to the first metal positioning block 4.

[0047] To provide more diverse power options, in some alternative embodiments, a hydraulic cylinder or an electric cylinder is fixedly mounted on the mounting base 701, so that the entire device can flexibly select the most suitable driving method according to the needs of the actual application scenario.

[0048] To improve the stability of the device, in this embodiment, the output shaft of the positioning cylinder 702 is fixedly connected to the mounting base 704, and two guide columns 703 are fixedly installed on the mounting base 704. The two guide columns 703 are parallel to the output shaft of the positioning cylinder 702 and located on both sides of the output shaft. The fixed base 701 is provided with guide grooves 705 for the guide columns 703 to slide. The first metal positioning block 4 is fixedly connected to the mounting base 704.

[0049] like Figure 3 As shown, in order to limit the stroke of the positioning cylinder 702 and prevent its output shaft from extending excessively and causing potential damage to the workpiece 16, in this embodiment, a first limiting block 13 is fixedly installed on the fixed base 701. The first limiting block 13 is set along the output shaft direction of the positioning cylinder 702, so that it can block the positioning cylinder 701 in time when it extends to the preset position, ensuring that the cylinder stroke is within a safe range and protecting the workpiece from damage. This not only enhances the safety of the device, but also improves the reliability of the overall operation.

[0050] like Figure 2 As shown, in order to limit the stroke of the clamping cylinder 601 and prevent its output shaft from excessively retracting and causing damage to the workpiece 16, in this embodiment, a second limiting block 14 is fixedly installed on the support base 1. The second limiting block 14 is arranged along the output shaft direction of the clamping cylinder 601, so that it can block the clamping cylinder 601 in time when it is shortened to the preset position, ensuring that the cylinder stroke is within a safe range and protecting the workpiece from damage. This not only enhances the safety of the device, but also improves the reliability of the overall operation.

[0051] The first clamping block 2 and the second clamping block 3 are provided with elastic pressure blocks 15, such as rubber, close to each other on one side, to press the workpiece 16.

[0052] The first metal positioning block 4 and the second metal positioning block 5 are both made of copper, which has low resistivity and excellent conductivity.

[0053] Working principle of the invention:

[0054] During welding, the workpiece 16 is placed between the first clamping block 2 and the second clamping block 3. An external mechanism fixes the workpiece 16 (not shown in the figure). The output shaft of the clamping cylinder 601 retracts, causing the second clamping block 3 to fix the edge of the workpiece 16. At the same time, the first metal positioning block 4 abuts against the inner surface of the workpiece 16. Then, a stud is placed in the cavity 401 of the second metal positioning block 5 manually or mechanically. The positioning cylinder 702 is activated, and the output shaft of the positioning cylinder 702 extends, driving the first metal positioning block 4 to approach the outer surface of the workpiece 16. The robot welding clamp 17 performs electrical welding through the circuit formed by the first metal positioning block 4 and the second metal positioning block 5, welding the stud onto the workpiece 16.

[0055] After welding is completed, the output shaft of the positioning cylinder 702 retracts, causing the first metal positioning block 4 to move away from the workpiece 16. The stud disengages from the cavity 401 of the first metal positioning block 4, the output shaft of the clamping cylinder 601 extends, the second clamping block 3 moves away from the first clamping block 2, the workpiece 16 is released, and the second metal positioning block 5 moves away from the workpiece 16. The workpiece 16 is then removed, completing the processing of the workpiece 16.

[0056] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0057] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0058] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A positioning mechanism for a robotic welding stud, characterized by, The utility model relates to a robot welding screw positioning mechanism which comprises the following parts: A support base (1); A first clamping block (2) fixedly connected to the support base (1); A second clamping block (3) movably connected to the support base (1); A first metal positioning block (4) with a cavity (401) at one end for placing a stud, and movably connected to the support base (1); A second metal positioning block (5) fixedly connected to the second clamping block (3); A pressing driving mechanism (6) connected to the second clamping block (3) for driving the second clamping block (3) to move towards or away from the first clamping block (2) to clamp or release a workpiece (16); A positioning driving mechanism (7) connected to the first metal positioning block (4) for driving the first metal positioning block (4) to move towards a workpiece (16) to position a stud.

2. The robot welding screw positioning mechanism according to claim 1, wherein: The pressing driving mechanism (6) comprises a pressing cylinder (601) fixedly installed on the support base (1), and an output shaft of the pressing cylinder (601) is fixedly connected to the second clamping block (3).

3. The robot welding screw positioning mechanism according to claim 2, wherein: The second clamping block (3) is fixedly connected with a connecting seat (8) at the upper end, the connecting seat (8) is fixedly connected with the output shaft of the pressing cylinder (601), an adjusting seat (9) is fixedly installed on the connecting seat (8), and an installation plate (10) is fixedly installed between the adjusting seat (9) and the second metal positioning block (5).

4. The robot welding screw positioning mechanism according to claim 3, wherein: A convex block (12) is fixedly installed on the support base (1), and a concave block (11) matching the convex block (12) is fixedly installed at the lower end of the connecting seat (8).

5. The robot welding screw positioning mechanism according to claim 1, wherein: The positioning driving mechanism (7) comprises a fixing seat (701) fixedly installed on the support base (1), a positioning cylinder (702) fixedly installed on the fixing seat (701), and an output shaft of the positioning cylinder (702) is fixedly connected to the first metal positioning block (4).

6. The robot welding screw positioning mechanism according to claim 5, wherein: The output shaft of the positioning cylinder (702) is fixedly connected with an installation seat (704), at least one guide column (703) is fixedly installed on the installation seat (704), the guide column (703) is parallel to the output shaft of the positioning cylinder (702), a guide groove (705) for the guide column (703) to slide is arranged on the fixing seat (701), and the first metal positioning block (4) is fixedly connected to the installation seat (704).

7. The robot welding screw positioning mechanism according to claim 5, wherein: A first limiting block (13) is fixedly installed on the fixing seat (701).

8. The robot welding screw positioning mechanism according to claim 1, wherein: A second limiting block (14) is fixedly installed on the support base (1).

9. The robot welding stud positioning mechanism according to claim 1, characterized in that: The first clamp block (2) and the second clamp block (3) are provided with elastic pressing blocks (15) on the side close to each other.

10. The robot welding stud positioning mechanism according to claim 1, characterized in that: The first metal positioning block (4) and the second metal positioning block (5) are both made of copper material.

Images