Automobile battery shell beam nut welding tool

Abstract

An automobile battery case beam nut welding tool relates to the technical field of automobile part manufacturing and comprises a bottom frame, a leakage-proof detection positioning pin mechanism, a nut conveying mechanism, a beam fixing mechanism, an X-axis feeding mechanism and a Y-axis feeding mechanism. According to the automatic nut projection welding machine, the X-axis feeding mechanism and the Y-axis feeding mechanism can automatically carry out nut projection welding operation on a plurality of different hole sites in the X-axis direction and the Y-axis direction of the cross beam, the cross beam does not need to be taken for multiple times to weld the different hole sites, and the production efficiency is greatly improved. The nut leakage-proof detection module is arranged, so that the condition of neglected installation of the nut can be monitored, the neglected installation problem caused by various reasons is completely eradicated, and the product quality is improved. The adjusting spring module is arranged on the cross beam fixing mechanism, so that the lower surface of the cross beam can be more tightly attached to the lower electrode, the phenomena of insufficient welding and weak welding caused by a gap between the lower electrode and a workpiece after the lower electrode is ground are avoided, and the welding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts manufacturing, in particular to a welding tool for automobile battery shell crossbeam nuts. Background Art

[0002] The crossbeam on the battery shell of new energy vehicles, such as Figure 3 As shown, it is necessary to weld nuts at multiple holes on the beam 1 for connecting and fixing external parts. The existing welding method is that a person manually holds the beam 1 and inserts the first hole into the positioning pin. The nut conveyor conveys the nut to the hole and puts it on the positioning pin for positioning. The equipment then welds. After one process is completed, the person manually picks up the beam and puts it into the second hole. The nut welding on all the holes is completed according to the above process. This method of manual welding one by one has low production efficiency, high labor intensity, poor safety, and is easy to be misplaced, resulting in tilted nut welds and waste. Therefore, the industry is in urgent need of an automated automotive battery shell beam nut welding tool.

[0003] For the convenience of description, the following Figure 1 The coordinates shown in the description are standard. Summary of the invention

[0004] The purpose of the present invention is to provide a nut welding tool for a crossbeam of an automobile battery shell, which can automatically perform nut work at multiple hole positions on the crossbeam.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A welding tool for a crossbeam nut of an automobile battery shell comprises a base frame, a leak-proof detection positioning pin mechanism, a nut conveying mechanism, a crossbeam fixing mechanism, an X-axis feeding mechanism, and a Y-axis feeding mechanism. The X-axis feeding mechanism is arranged on the base frame, the Y-axis feeding mechanism is arranged on the X-axis feeding mechanism, the crossbeam fixing mechanism is arranged on the Y-axis feeding mechanism, and the leak-proof detection positioning pin mechanism and the nut conveying mechanism are fixedly arranged at preset positions of the base frame through external devices.

[0006] The above-mentioned automobile battery shell crossbeam nut welding tooling, the leakage detection locating pin mechanism includes a nut locating pin feeding cylinder, a nut leakage detection module, a connecting block, a lower electrode fixing seat, a lower electrode, and a nut locating pin. The connecting block is fixed to an external device, the nut locating pin feeding cylinder is installed on the connecting block, and the nut leakage detection module is installed at the lower end of the nut locating pin feeding cylinder. The lower electrode fixing seat is driven by the nut locating pin feeding cylinder to move up and down, the lower electrode is arranged at the upper end of the lower electrode fixing seat, and the nut locating pin passes through the lower electrode and is arranged on the lower electrode fixing seat.

[0007] The above-mentioned automobile battery shell crossbeam nut welding tool, the nut conveying mechanism includes a fixing rod, a conveying cylinder, a nut conveying tube connecting block, a nut conveying tube fixing seat, a nut conveying tube, a nut conveying rod, and a connecting pipe. The fixing rod is installed on an external device, the nut conveying tube connecting block connects the fixing rod and the connecting pipe together, the conveying cylinder drives the nut conveying rod to move, the nut conveying tube fixing seat is fixed on the connecting pipe, and the nut conveying tube is installed on the nut conveying tube fixing seat.

[0008] The above-mentioned automobile battery shell crossbeam nut welding tooling, the X-axis feeding mechanism includes an X-axis guide rail, an X-axis limit module, an X-axis motion fixed plate and an X-axis drive module, the X-axis drive module includes an X-axis stepping motor, an X-axis lead screw, and an X-axis lead screw end fixing seat, the X-axis guide rail and the X-axis limit module are installed on the chassis, the X-axis motion fixed plate is movably installed on the X-axis guide rail, and the X-axis drive module is installed on the chassis to drive the X-axis motion fixed plate to move along the coordinate X-axis direction.

[0009] The above-mentioned automobile battery shell crossbeam nut welding tooling, the Y-axis feeding mechanism includes a Y-axis motion fixing plate, a Y-axis limit module, a Y-axis guide rail and a Y-axis drive module, the Y-axis drive module includes a synchronous belt, a Y-axis lead screw, a Y-axis stepping motor, and a Y-axis lead screw end fixing seat, the Y-axis limit module, the Y-axis guide rail and the Y-axis drive module are all installed on the X-axis motion fixing plate, the Y-axis motion fixing plate is movably installed on the Y-axis guide rail, and the Y-axis drive module drives the Y-axis motion fixing plate to move along the coordinate Y-axis direction.

[0010] The above-mentioned automobile battery shell beam nut welding tool, the beam fixing mechanism includes a beam fixing mechanism fixing seat, a clamping cylinder, a guide module, an adjustment spring module, a fixture height adjustment plate, a fixing plate, a beam locating pin, a fixture, a beam support seat, and an insulating layer, the adjustment spring module includes a connecting column, a guide sleeve, a spring, and a locking nut, the beam fixing mechanism fixing seat includes two left and right ones, both of which are installed on the Y-axis motion fixing plate, the clamping cylinder and the guide module are symmetrically arranged on the beam fixing mechanism fixing seat, the left and right ends of the fixing plate are connected to the clamping cylinder through a bracket, the beam locating pin, the fixture, and the beam support seat are all installed on the fixture height adjustment plate, the beam locating pin, the fixture, and the beam support seat are all installed on the fixture height adjustment plate, and an insulating layer is provided between the fixture height adjustment plate and the fixing plate, the upper end of the connecting column is fixed to the fixture height adjustment plate by a fastener, the guide sleeve is installed on the fixing plate, the connecting column can movably pass through the guide sleeve, and the lower end of the connecting column is provided with a spring, which is fixed by a locking nut.

[0011] In the above-mentioned automobile battery shell crossbeam nut welding tool, the fixture height adjustment plate, the fixed plate, the Y-axis movement fixed plate, and the X-axis movement fixed plate are all plate-like structures with a hollow center.

[0012] The present invention has the following advantages: The automobile battery shell crossbeam nut welding tool of the present invention is provided with an X-axis feeding mechanism and a Y-axis feeding mechanism, which can automatically perform nut projection welding operations on multiple holes with different positions in the X-axis and Y-axis directions on the crossbeam, without the need to repeatedly take the crossbeam to weld different multiple holes, thereby greatly improving production efficiency. The present invention is provided with a nut leakage prevention detection module, which can monitor the situation of nut leakage, eliminate the problem of leakage caused by various reasons, and improve product quality. The crossbeam fixing mechanism of the present invention is provided with an adjustment spring module, which can make the lower surface of the crossbeam more closely attached to the lower electrode, avoid the gap between the lower electrode and the workpiece after the lower electrode is ground, resulting in the occurrence of false welding and weak welding, and improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is the front view of the plan view of the present invention; Figure 3 is a schematic diagram of the beam structure; Figure 4 It is a schematic diagram of the three-dimensional structure of the leak-proof detection positioning pin mechanism; Figure 5 It is a schematic diagram of the three-dimensional structure of the nut conveying mechanism; Figure 6 It is a schematic diagram of the three-dimensional structure of the beam fixing mechanism; Figure 7 It is a three-dimensional structural schematic diagram of an X-axis feeding mechanism and a Y-axis feeding mechanism of an X-axis driving module and a Y-axis driving module, which are not shown; Figure 8 It is the X-axis driving module; Fig. 9 It is the Y-axis driving module; Fig.10 A partial enlarged cross-sectional view of the spring module installation structure for adjustment; The numbers in the figure are respectively represented as: 1, crossbeam, 2, base frame, 3, leak detection positioning pin mechanism, 4, nut conveying mechanism, 5, crossbeam fixing mechanism, 6, X-axis feeding mechanism, 7, Y-axis feeding mechanism, 3-1, nut positioning pin feeding cylinder, 3-2, nut leak detection module, 3-3, connecting block, 3-4, lower electrode fixing seat, 3-5, lower electrode, 3-6, nut positioning pin, 4-1, fixing rod, 4-2, conveying cylinder, 4-3, nut conveying pipe connecting block, 4-4, nut conveying pipe fixing seat, 4-5, nut conveying pipe, 4-6, nut conveying rod, 4-7, connecting pipe, 5-1, crossbeam fixing mechanism fixing seat, 5-2, clamping cylinder, 5-3, guide module, 5-4, Adjust the spring module, 5-5, fixture height adjustment plate, 5-6, fixed plate, 5-7, beam positioning pin, 5-8, fixture, 5-9, beam support seat, 5-10, insulation layer, 6-1, X-direction guide rail, 6-2, X-direction limit module, 6-3, X-direction motion fixed plate, 6-4, X-direction stepper motor, 6-5, X-direction lead screw, 6-6, X-direction lead screw end fixed seat, 7-1, Y-direction motion fixed plate, 7-2, Y-direction limit module, 7-3, Y-direction guide rail, 7-4, synchronous belt, 7-5, Y-direction lead screw, 7-6, Y-direction stepper motor, 7-7, Y-direction lead screw end fixed seat, 5-4-1, connecting column, 5-4-2, guide sleeve, 5-4-3, spring, 5-4-4, locking nut. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] The present invention provides a welding tool for the crossbeam nut of an automobile battery shell, such as Figure 3 As shown, a plurality of holes are provided on the crossbeam 1 along the coordinate X-axis direction. During production, nuts need to be convexly welded at these holes. According to the requirements of different types of battery shells, the positions of the holes may also be different in the coordinate Y-axis direction. The present invention is used to solve the problem of automated nut convex welding at the holes at different positions mentioned above.

[0016] The present invention provides a welding tool for the crossbeam nut of an automobile battery shell, such as Figure 1 As shown, a base frame 2, an anti-leakage detection positioning pin mechanism 3, a nut conveying mechanism 4, a beam fixing mechanism 5, an X-axial feeding mechanism 6, and a Y-axial feeding mechanism 7 are provided, wherein the anti-leakage detection positioning pin mechanism 3 is used for positioning and welding nuts and detecting whether nuts are missing, the nut conveying mechanism 4 is used for conveying nuts to the beam holes, the beam fixing mechanism 5 is used for fixing the beam 1, and the X-axial feeding mechanism 6 and the Y-axial feeding mechanism 7 are used for driving the X-axial and Y-axial movements of the beam 1.

[0017] The present invention provides a welding tool for the crossbeam nut of an automobile battery shell, such as Figure 4As shown, the anti-leakage detection positioning pin mechanism 3 includes a nut positioning pin feeding cylinder 3-1, a nut anti-leakage detection module 3-2, a connecting block 3-3, a lower electrode fixing seat 3-4, a lower electrode 3-5, and a nut positioning pin 3-6. The connecting block 3-3 is fixedly installed on an external device. The nut positioning pin feeding cylinder 3-1 drives the lower electrode fixing seat 3-4 to move, and then drives the lower electrode 3-5 and the nut positioning pin 3-6 to move. The nut anti-leakage detection module 3-2 is installed below the nut positioning pin feeding cylinder 3-1, and is used to detect whether the nut is missing.

[0018] The present invention provides a welding tool for the crossbeam nut of an automobile battery shell, such as Figure 5 As shown, the nut conveying mechanism 4 includes a fixed rod 4-1, a conveying cylinder 4-2, a nut conveying pipe connecting block 4-3, a nut conveying pipe fixing seat 4-4, a nut conveying pipe 4-5, a nut conveying rod 4-6, and a connecting pipe 4-7. The fixed rod 4-1 is fixedly mounted on an external device, and the conveying cylinder 4-2 drives the nut conveying rod 4-6 to move, and the nut is fed from the nut conveying pipe 4-5. A step is provided at the right end of the nut conveying rod 4-6, and the boss is used to tighten the nut. The diameter of the right side of the step is smaller than the inner diameter of the nut, and the nut conveying rod 4-6 is at a certain angle to the horizontal plane.

[0019] The present invention provides a welding tool for the crossbeam nut of an automobile battery shell, such as Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the beam fixing mechanism 5 includes a beam fixing mechanism fixing seat 5-1, a clamping cylinder 5-2, a guide module 5-3, an adjustment spring module 5-4, a fixture height adjustment plate 5-5, a fixing plate 5-6, a beam positioning pin 5-7, a fixture 5-8, a beam support seat 5-9, and an insulating layer 5-10. The X-axis feeding mechanism 6 includes an X-direction guide rail 6-1, an X-direction limit module 6-2, an X-direction motion fixing plate 6-3 and an X-direction drive module. The X-direction drive module includes an X-direction stepping motor 6-4, an X-direction lead screw 6-5, and an X-direction lead screw end fixing seat 6-6. The Y-axis feeding mechanism 7 includes a Y-direction motion fixing plate 7-1, a Y-direction limit module 7-2, a Y-direction guide rail 7-3 and a Y-direction drive module. The Y-direction drive module includes a synchronous belt 7-4, a Y-direction lead screw 7-5, a Y-direction stepping motor 7-6, and a Y-direction lead screw end fixing seat (7-7).

[0020] The working principle of the welding tool for the crossbeam nut of the automobile battery shell of the present invention is as follows: Manually place the beam 1 into the two beam locating pins 5-7 of the beam fixing mechanism 5, press the equipment start button, and the four clamps 5-8 of the beam fixing mechanism 5 clamp the beam. The nut locating pin 3-6 of the leak-proof detection locating pin mechanism 3 at the hole to be welded rises under the push of the nut locating pin feeding cylinder 3-1. At the same time, the clamping cylinders 5-2 on both sides of the beam fixing mechanism 5 press the fixing plate 5-6 down. At this time, the clamp height adjustment plate 5-5 automatically moves back under the action of the adjustment spring module 5-4, thereby making the beam 1 more closely attached to the lower electrode 3-5.

[0021] The action of the conveying cylinder 4-2 of the nut conveying mechanism 4 drives the nut conveying rod 4-6 to move left and right. After the nut penetrates into the right end of the nut conveying rod 4-6 and moves to the right, the nut slides and falls on the nut locating pin 3-6 of the leak-proof detection locating pin mechanism 3. After that, the nut conveying rod 4-6 moves left to prepare for the next feeding.

[0022] The upper electrode of the external device presses down the nut. At this time, the nut positioning pin 3-6 of the anti-leakage detection positioning pin mechanism 3 moves downward. At the same time, the nut anti-leakage detection module 3-2 performs detection. The upper electrode presses down. If there is no nut, the lower nut positioning pin 3-6 does not move, and the displacement sensor has no signal, so welding is not performed. If the nut is correct, welding is performed.

[0023] After welding is completed, the clamping cylinder 5-2 rises, the nut positioning pin 3-6 retreats, and the X-axis feeding mechanism 6 and the Y-axis feeding mechanism 7 drive the X-axis motion fixing plate 6-3 and the Y-axis motion fixing plate 7-1 to shift the beam 1 to the second hole to be welded through the screw and the linear guide according to the set coordinates, and repeat the above actions until all the holes to be welded are welded.

[0024] Finally, the conveying device returns to zero position, each clamping device and clamping device opens automatically, and the crossbeam 1 is manually removed to complete the welding work of a part.

Claims

1. A welding tool for the crossbeam nut of an automobile battery shell, characterized in that: The invention comprises a base frame (2), a leak-proof detection positioning pin mechanism (3), a nut conveying mechanism (4), a crossbeam fixing mechanism (5), an X-axis feeding mechanism (6), and a Y-axis feeding mechanism (7), wherein the X-axis feeding mechanism (6) is arranged on the base frame (2), the Y-axis feeding mechanism (7) is arranged on the X-axis feeding mechanism (6), the crossbeam fixing mechanism (5) is arranged on the Y-axis feeding mechanism (7), and the leak-proof detection positioning pin mechanism (3) and the nut conveying mechanism (4) are fixedly arranged at preset positions on the base frame (2) through external devices.

2. The automobile battery housing crossbeam nut welding tool according to claim 1, characterized in that: The anti-leakage detection positioning pin mechanism (3) comprises a nut positioning pin feeding cylinder (3-1), a nut anti-leakage detection module (3-2), a connecting block (3-3), a lower electrode fixing seat (3-4), a lower electrode (3-5), and a nut positioning pin (3-6); the connecting block (3-3) is fixed to an external device; the nut positioning pin feeding cylinder (3-1) is mounted on the connecting block (3-3); the nut anti-leakage detection module (3-2) is mounted at the lower end of the nut positioning pin feeding cylinder (3-1); the lower electrode fixing seat (3-4) is driven by the nut positioning pin feeding cylinder (3-1) to move up and down; the lower electrode (3-5) is arranged at the upper end of the lower electrode fixing seat (3-4); and the nut positioning pin (3-6) passes through the lower electrode (3-5) and is arranged on the lower electrode fixing seat (3-4).

3. The automobile battery housing crossbeam nut welding tool according to claim 1, characterized in that: The nut conveying mechanism (4) comprises a fixing rod (4-1), a conveying cylinder (4-2), a nut conveying pipe connecting block (4-3), a nut conveying pipe fixing seat (4-4), a nut conveying pipe (4-5), a nut conveying rod (4-6), and a connecting pipe (4-7); the fixing rod (4-1) is mounted on an external device; the nut conveying pipe connecting block (4-3) connects the fixing rod (4-1) and the connecting pipe (4-7); the conveying cylinder (4-2) drives the nut conveying rod (4-6) to move; the nut conveying pipe fixing seat (4-4) is fixed on the connecting pipe (4-7); and the nut conveying pipe (4-5) is mounted on the nut conveying pipe fixing seat (4-4).

4. The automobile battery housing crossbeam nut welding tool according to claim 1, characterized in that: The X-axis feeding mechanism (6) comprises an X-axis guide rail (6-1), an X-axis limit module (6-2), an X-axis motion fixing plate (6-3) and an X-axis drive module; the X-axis drive module comprises an X-axis stepping motor (6-4), an X-axis lead screw (6-5) and an X-axis lead screw end fixing seat (6-6); the X-axis guide rail (6-1) and the X-axis limit module (6-2) are mounted on a base frame (2); the X-axis motion fixing plate (6-3) is movably mounted on the X-axis guide rail (6-1); and the X-axis drive module is mounted on the base frame (2) to drive the X-axis motion fixing plate (6-3) to move along the coordinate X-axis direction.

5. The automobile battery housing crossbeam nut welding tool according to claim 1, characterized in that: The Y-axis feeding mechanism (7) comprises a Y-axis motion fixing plate (7-1), a Y-axis limiting module (7-2), a Y-axis guide rail (7-3) and a Y-axis driving module; the Y-axis driving module comprises a synchronous belt (7-4), a Y-axis lead screw (7-5), a Y-axis stepping motor (7-6) and a Y-axis lead screw end fixing seat (7-7); the Y-axis limiting module (7-2), the Y-axis guide rail (7-3) and the Y-axis driving module are all mounted on the X-axis motion fixing plate (6-3); the Y-axis motion fixing plate (7-1) is movably mounted on the Y-axis guide rail (7-3); and the Y-axis driving module drives the Y-axis motion fixing plate (7-1) to move along the coordinate Y-axis direction.

6. The automobile battery housing crossbeam nut welding tool according to claim 1, characterized in that: The crossbeam fixing mechanism (5) comprises a crossbeam fixing mechanism fixing seat (5-1), a clamping cylinder (5-2), a guide module (5-3), an adjustment spring module (5-4), a fixture height adjustment plate (5-5), a fixing plate (5-6), a crossbeam positioning pin (5-7), a fixture (5-8), a crossbeam support seat (5-9), and an insulating layer (5-10); the adjustment spring module (5-4) comprises a connecting column (5-4-1), a guide sleeve (5-4-2), a spring (5-4-3), and a locking nut (5-4-4); the crossbeam fixing mechanism fixing seat (5-1) comprises two left and right seats, both of which are mounted on the Y-direction motion fixing plate (7-1); the clamping cylinder (5-2) and the guide module (5-3) are both symmetrically arranged on the crossbeam fixing mechanism fixing seat (5-1); the left and right ends of the fixing plate (5-6) are connected by The bracket is connected to the clamping cylinder (5-2); the beam positioning pin (5-7), the clamp (5-8), and the beam support seat (5-9) are all installed on the clamp height adjustment plate (5-5); the beam positioning pin (5-7), the clamp (5-8), and the beam support seat (5-9) are all installed on the clamp height adjustment plate (5-5); an insulating layer (5-10) is provided between the clamp height adjustment plate (5-5) and the fixed plate (5-6); the upper end of the connecting column (5-4-1) is fixed to the clamp height adjustment plate (5-5) by a fastener; the guide sleeve (5-4-2) is installed on the fixed plate (5-6); the connecting column (5-4-1) can movably pass through the guide sleeve (5-4-2); the lower end of the connecting column (5-4-1) is provided with a spring (5-4-3); the spring (5-4-3) is fixed by a locking nut (5-4-4).

7. The automobile battery housing crossbeam nut welding tool according to claim 1, characterized in that: The clamp height adjustment plate (5-5), the fixing plate (5-6), the Y-direction movement fixing plate (7-1), and the X-direction movement fixing plate (6-3) are all plate-like structures with a hollow central portion.

Images