A robotic welding fixture

Abstract

The application relates to the technical field of an explosion-proof electrical device tool clamp, in particular to a robot welding tool clamp, which comprises a positioning seat for placing a terminal box body, the positioning seat is provided with a positioning mechanism and a pre-fixing mechanism, the positioning mechanism is used for positioning the terminal box body, the pre-fixing mechanism comprises a pre-fixing driving source and a pressing plate, the pre-fixing driving source is used for driving the pressing plate to move along the arrangement direction of an introduction device and the terminal box body, and the pressing plate is used for abutting the introduction device against the outer wall surface of a mounting wall. The robot welding tool clamp abuts the introduction device against the outer wall surface of the mounting wall through the pressing plate, the gap between the introduction device and the terminal box body is minimized, displacement in the welding process is prevented, the positioning precision and the welding quality of the robot welding are improved, manual intervention is reduced, and the efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of tooling fixtures for explosion-proof electrical installations, and more particularly to a robotic welding tooling fixture. Background Technology

[0002] Reference Figure 1 The explosion-proof electrical device includes a junction box 1. In the prior art, the junction box 1 is generally welded to the body of the explosion-proof electrical device manually. The junction box 1 includes a junction box body 11 and an inlet device 12. Two opposing side walls of the junction box body 11 are mounting walls 111. There are two sets of inlet devices 12, with two inlet devices 12 in each set. The two sets of inlet devices 12 are welded and fixed to the outer wall surface of different mounting walls 111. A through hole 112 extending along the arrangement direction of the junction box body 11 and the inlet device 12 is opened through the mounting wall 111. A mounting groove 121 extending along the arrangement direction of the inlet device 12 and the junction box body 11 is opened on the surface of the inlet device 12 away from the mounting wall 111. A connecting hole 122 communicating with the through hole 112 is opened on the bottom wall of the mounting groove 121. The welding and fixing between the junction box body 11 and the inlet device 12 is usually done by hand by the worker.

[0003] To improve welding efficiency and safety, robotic welding has been introduced. Welding with a robot requires pre-positioning of various components, especially the junction box body 11 and the lead-in device 12. Utility Model Content

[0004] To improve welding efficiency and safety, this application provides a robotic welding fixture.

[0005] This application provides a robotic welding fixture, which adopts the following technical solution:

[0006] A robotic welding fixture includes a positioning seat for placing a junction box body. The positioning seat is provided with a positioning mechanism and a pre-fixing mechanism. The positioning mechanism is used to position the junction box body. The pre-fixing mechanism includes a pre-fixing drive source and a top pressure plate. The pre-fixing drive source is used to drive the top pressure plate to move along the arrangement direction of the introduction device and the junction box body. The top pressure plate is used to press the introduction device against the outer wall surface of the mounting wall.

[0007] By adopting the above technical solution, the angle of the introduction device is first positioned by a pre-fixing plate before welding, and then the introduction device is pre-connected to the junction box body by spot welding. During welding, the junction box is inverted on the positioning seat, and the positioning mechanism ensures that the junction box body is accurately positioned when placed. The pre-fixing drive source drives the top pressure plate to move, pressing the introduction device against the outer wall of the mounting wall. This can minimize the gap between the introduction device and the junction box body, prevent displacement during the welding process, thereby improving the positioning accuracy and welding quality of robot welding, reducing manual intervention and improving efficiency.

[0008] Optionally, the top pressure plate is used to insert into the mounting groove and abut against the bottom wall of the mounting groove.

[0009] By adopting the above technical solution, the design of inserting the top pressure plate into the mounting groove and pressing it against the bottom wall of the groove enhances the fixing effect of the introduction device; by directly contacting the bottom of the mounting groove, this structure eliminates the risk of axial loosening of the introduction device during welding, ensures that the gap between the introduction device and the junction box body is uniform, avoids welding deformation or misalignment, and thus improves the overall structural stability of the explosion-proof electrical device.

[0010] Optionally, the top pressure plate is configured to be adapted to the structure of the mounting groove, and the top pressure plate is configured to have a clearance fit with the side wall of the mounting groove.

[0011] By adopting the above technical solution, the top pressure plate structure is adapted to the mounting groove and abuts against the side wall of the mounting groove, which enhances the radial constraint of the introduction device. This adaptability design provides additional radial fixing force through multi-point contact, preventing the introduction device from shaking during the welding process, and can also play an auxiliary supporting role on the side wall of the mounting groove, thereby ensuring accurate welding position and improving the reliability of robot welding.

[0012] Optionally, the positioning seat is further provided with an inner wall leveling mechanism, which includes a leveling drive source and a leveling plate. The leveling drive source is used to drive the leveling plate to move along the arrangement direction of the inlet device and the junction box body, and the leveling plate is used to press against the inner wall surface of the mounting wall.

[0013] By adopting the above technical solution, since the side plate of the junction box may be slightly uneven after production, the leveling drive source drives the leveling plate to press against the inner wall of the mounting wall. The pressure of the leveling plate can level the mounting wall, keep the mounting wall flat, ensure that the inlet device is tightly attached to the outer wall of the mounting wall, eliminate welding gaps, improve welding strength and sealing performance, and is particularly suitable for the stringent requirements of explosion-proof electrical devices.

[0014] Optionally, the calibration plate is provided with a positioning plate, which is adapted to the structure of the through hole and is used to insert into the through hole.

[0015] By adopting the above technical solution, a positioning plate is set on the calibration plate and adapted to the through hole structure. Dual positioning is achieved by inserting through the through hole. This design not only calibrates the mounting wall, but also uses the through hole as a reference point to accurately align the junction box body and the introduction device, reducing assembly errors and avoiding welding misalignment, thereby optimizing the robot welding path and improving the consistency of explosion-proof performance.

[0016] Optionally, the positioning mechanism includes a positioning inner plate disposed on the positioning seat, the positioning inner plate being used to abut against the inner wall surface of the junction box body to restrict the movement of the junction box body 11 in the horizontal direction.

[0017] By adopting the above technical solution, the horizontal movement of the junction box body is restricted by the contact between the positioning inner plate and the inner wall surface of the junction box body. This structure can position the junction box body, prevent sliding or tilting caused by welding vibration, ensure the stability of the reference when the device is pre-fixed, and improve the overall welding efficiency and quality.

[0018] Optionally, the positioning inner plate is provided, and the positioning mechanism further includes a positioning drive source and a positioning outer plate. The positioning drive source is used to drive the positioning outer plate to move in a direction close to or away from the positioning inner plate, and the positioning outer plate is used to abut against the outer wall surface of the side wall of the junction box body that is abutted by the positioning inner plate.

[0019] By adopting the above technical solution, compared with placing the junction box body upside down on a frame structure composed of multiple positioning plates, using a single positioning inner plate in conjunction with a positioning outer plate, the final position of the junction box body can be adjusted by mechanical energy, facilitating the placement operation of the junction box body on the positioning seat, and ultimately achieving more accurate positioning of the junction box body; the positioning drive source drives the positioning outer plate to move, forming an adjustable clamping mechanism. The positioning outer plate, by moving and contacting the outer wall surface of the junction box body, provides variable clamping force to accommodate junction boxes of different sizes, while enhancing horizontal fixation, preventing welding deformation, and improving the versatility and operational flexibility of the fixture.

[0020] Optionally, the positioning drive source and the positioning outer plate are provided in multiple sets. The multiple sets of the positioning drive source and the positioning outer plate are arranged along the arrangement direction of the introduction device and the junction box body, wherein two positioning outer plates are respectively used to abut against the two ends of the side wall of the junction box body near the mounting wall.

[0021] By adopting the above technical solution, multiple sets of positioning drive sources and positioning outer plates are set up, two of which are specifically used to abut the mounting wall end of the junction box main body side wall; this multi-point distribution design evenly disperses the clamping force, avoids deformation of the mounting wall caused by local stress concentration, and particularly enhances the stability of key welding areas, ensuring the reliability and explosion-proof performance of the robot welding process.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The top pressure plate presses the introduction device against the outer wall of the mounting wall to minimize the gap between the introduction device and the junction box body, prevent displacement during welding, improve the positioning accuracy and welding quality of robot welding, reduce manual intervention and improve efficiency;

[0024] 2. The leveling drive source drives the leveling plate to press against the inner wall surface of the mounting wall. The pressure of the leveling plate can level the mounting wall, keep the mounting wall flat, ensure that the introduction device is tightly attached to the outer wall surface of the mounting wall, eliminate welding gaps, and improve welding strength and sealing performance.

[0025] 3. A single inner positioning plate is used in conjunction with an outer positioning plate. The final position of the junction box body is adjusted mechanically, which facilitates the placement of the junction box body on the positioning seat and makes the final positioning of the junction box body more accurate. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the junction box in the background art of this application.

[0027] Figure 2 This is a structural diagram of an embodiment of this application in an application scenario.

[0028] Figure 3 This is a structural schematic diagram of an embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Junction box; 11. Junction box body; 111. Mounting wall; 112. Through hole; 12. Inlet device; 121. Mounting groove; 122. Connecting hole; 2. Positioning seat; 3. Positioning mechanism; 31. Positioning inner plate; 32. Positioning drive source; 33. Positioning outer plate; 4. Pre-fixing mechanism; 41. Pre-fixing drive source; 42. Top pressure plate; 5. Inner wall leveling mechanism; 51. Leveling drive source; 52. Leveling plate; 53. Positioning plate. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 2-3 This application will be described in further detail.

[0031] This application discloses a robotic welding fixture. (Refer to...) Figure 2 and Figure 3The robotic welding fixture includes a positioning base 2, which is used to place the junction box body. The introduction device and the junction box body are arranged in a left-right direction. The positioning base 2 is equipped with a positioning mechanism 3 and a pre-fixing mechanism 4. The positioning mechanism 3 is used to position the junction box body. The pre-fixing mechanism 4 includes a pre-fixing drive source 41 and a top pressure plate 42. The pre-fixing drive source 41 is fixedly mounted on the positioning base 2 and is a cylinder. The drive shaft of the pre-fixing drive source 41 is fixedly connected to the top pressure plate 42. The pre-fixing drive source 41 drives the top pressure plate 42 to move in a left-right direction, and the top pressure plate 42 is used to press the introduction device against the outer wall surface of the mounting wall. In other embodiments, the pre-fixing drive source 41 can be an electric push rod; any method that can drive the top pressure plate 42 to move is acceptable.

[0032] Reference Figure 2 and Figure 3 The pre-fixed drive source 41 is used to drive the top pressure plate 42 to move into the mounting groove, and the top pressure plate 42 is used to press against the bottom wall of the mounting groove, thereby pressing the introducing device against the mounting wall. The cross-sectional shape of the top pressure plate 42 is circular, that is, the structural shape of the top pressure plate 42 is adapted to the structural shape of the mounting groove of the introducing device. When the top pressure plate 42 extends into the mounting groove, the circumferential side wall of the top pressure plate 42 is clearance-fitted with the side wall of the mounting groove, so that the top pressure plate 42 plays an auxiliary positioning role for the introducing device.

[0033] Reference Figure 2 and Figure 3 The positioning seat 2 is also equipped with an inner wall leveling mechanism 5, which includes a leveling drive source 51 and a leveling plate 52. The leveling drive source 51 is fixedly installed on the positioning seat 2 and is a cylinder. The drive shaft of the leveling drive source 51 is fixedly connected to the leveling plate 52. The leveling drive source 51 is used to drive the leveling plate 52 to move in the left and right direction, and the leveling plate 52 is used to move to abut against the inner wall surface of the mounting wall. The pre-fixing mechanism 4 and the inner wall leveling mechanism 5 are located on the left and right sides of the mounting wall, respectively. The pre-fixing mechanism 4 cooperates with the inner wall leveling mechanism 5 to clamp the introduction device against the mounting wall. In other embodiments, the leveling drive source 51 can be an electric push rod, or any method that can drive the leveling plate 52 to move is acceptable.

[0034] Reference Figure 2 and Figure 3 A positioning plate 53 is fixedly installed on the surface of the calibration plate 52 near the mounting wall. The cross-sectional shape of the positioning plate 53 is circular, that is, the positioning plate 53 is adapted to the structure of the through hole. The positioning plate 53 is used to move with the calibration plate 52 to insert into the through hole. The circumferential sidewall of the positioning plate 53 is fitted with the hole wall of the through hole with a clearance, so that the positioning plate 53 plays an auxiliary positioning role for the junction box body.

[0035] Reference Figure 2 and Figure 3 The positioning mechanism 3 includes a positioning inner plate 31 fixedly installed on the positioning seat 2. The positioning inner plate 31 is provided such that when the junction box body is upside down on the positioning seat 2, the positioning inner plate 31 is located in the junction box body and is used to abut against the front inner wall or the rear inner wall of the junction box body.

[0036] Reference Figure 2 and Figure 3 The positioning mechanism 3 also includes multiple sets of positioning drive sources 32 and positioning outer plates 33, arranged in a left-right direction. The positioning drive sources 32 are fixedly mounted on the positioning base 2. Each positioning drive source 32 is a cylinder, and its drive shaft is fixedly connected to the positioning outer plate 33. The positioning drive sources 32 drive the positioning outer plate 33 to move in a front-back direction until it abuts against the outer wall of the junction box body. The positioning outer plate 33 and the positioning inner plate 31 are located on the front and rear sides of the side wall of the junction box body that is abutted by the positioning inner plate 31, respectively; that is, the positioning outer plate 33 is located on the outside of the junction box body. The positioning outer plate 33 cooperates with the positioning inner plate 31 to clamp the front or rear wall of the junction box body. In other embodiments, the positioning drive source 32 can be an electric push rod; any method capable of driving the positioning outer plate 33 to move is acceptable.

[0037] Reference Figure 2 and Figure 3 In this embodiment, a set of positioning drive source 32 and positioning outer plate 33 is provided. The two sets of positioning drive source 32 and positioning outer plate 33 are respectively located at the left and right ends of the front wall or rear wall of the junction box body, so that the two positioning outer plates 33 are respectively pressed against the outer wall surface of the left and right ends of the front wall or rear wall of the junction box body.

[0038] The implementation principle of a robotic welding fixture according to an embodiment of this application is as follows: First, the pre-welded junction box body with the introduction device is inverted and placed on the positioning seat 2. The positioning drive source 32 is activated, which drives the positioning outer plate 33 to move and press against the outer wall of the front or rear wall of the junction box body, so that the front or rear wall of the junction box body is clamped between the positioning outer plate 33 and the positioning inner plate 31, thus completing the positioning of the junction box body. Next, the pre-fixing drive source 41 and the leveling drive source 51 are activated. The pre-fixing drive source 41 drives the top pressure plate 42 to extend into the mounting groove and press against the bottom wall of the mounting groove. The leveling drive source 51 drives the leveling plate 52 to move and press against the inner wall of the mounting wall, thereby pre-fixing the introduction device on the junction box body.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A robotic welding fixture, characterized in that: It includes a positioning seat (2) for placing the junction box body (11), the positioning seat (2) is provided with a positioning mechanism (3) and a pre-fixing mechanism (4), the positioning mechanism (3) is used to position the junction box body (11), the pre-fixing mechanism (4) includes a pre-fixing drive source (41) and a top pressure plate (42), the pre-fixing drive source (41) is used to drive the top pressure plate (42) to move along the arrangement direction of the introduction device (12) and the junction box body (11), and the top pressure plate (42) is used to press the introduction device (12) against the outer wall surface of the mounting wall (111).

2. The robot welding fixture according to claim 1, characterized in that: The top pressure plate (42) is used to insert into the mounting groove (121) and abut against the bottom wall of the mounting groove (121).

3. The robot welding fixture according to claim 1, characterized in that: The structure of the top pressure plate (42) is adapted to the structure of the mounting groove (121), and the top pressure plate (42) is used to fit with the groove sidewall of the mounting groove (121) with clearance.

4. The robot welding fixture according to claim 1, characterized in that: The positioning seat (2) is also provided with an inner wall leveling mechanism (5). The inner wall leveling mechanism (5) includes a leveling drive source (51) and a leveling plate (52). The leveling drive source (51) is used to drive the leveling plate (52) to move along the arrangement direction of the introduction device (12) and the junction box body (11). The leveling plate (52) is used to press against the inner wall surface of the mounting wall (111).

5. The robot welding fixture according to claim 4, characterized in that: The calibration plate (52) is provided with a positioning plate (53), which is used to adapt to the structure of the through hole (112) and is used to insert into the through hole (112).

6. The robot welding fixture according to claim 1, characterized in that: The positioning mechanism (3) includes a positioning inner plate (31) disposed on the positioning seat (2). The positioning inner plate (31) is used to abut against the inner wall of the junction box body (11) to restrict the movement of the junction box body (11) in the horizontal direction.

7. The robot welding fixture according to claim 6, characterized in that: The positioning inner plate (31) is provided, and the positioning mechanism (3) further includes a positioning drive source (32) and a positioning outer plate (33). The positioning drive source (32) is used to drive the positioning outer plate (33) to move in a direction close to or away from the positioning inner plate (31). The positioning outer plate (33) is used to abut against the outer wall surface of the side wall of the junction box body (11) that is abutted by the positioning inner plate (31).

8. The robot welding fixture according to claim 7, characterized in that: The positioning drive source (32) and positioning outer plate (33) are provided in multiple sets. The multiple sets of positioning drive source (32) and positioning outer plate (33) are arranged along the arrangement direction of the introduction device (12) and the junction box body (11). Two positioning outer plates (33) are respectively used to abut against the two ends of the side wall of the junction box body (11) near the mounting wall (111).

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