A welding device for new energy vehicle production

Abstract

The present application relates to the technical field of welding technology for new energy vehicle production, and particularly relates to a welding device for new energy vehicle production, which comprises a positioning plate, a positioning hole is equidistantly arranged on the side of the positioning plate, a product piece and a welding assembly are arranged on the upper side of the positioning plate, a positioning assembly is arranged on the upper side of the positioning plate and corresponds to the position of the product piece, the welding assembly comprises a double-shaft load transfer module, a horizontal electric slide, a micro-mechanical arm and a welding gun. The welding assembly and the positioning assembly are arranged, so that semi-automatic workpiece locking operation can be performed, corner and height positioning operation can be performed in cooperation with various sensors during the locking process, point-to-point path automatic operation of welding is realized, welding distance can be detected in real time during welding, fine adjustment compensation is performed to ensure welding quality, the production of small-batch new product development is perfectly adapted, and the device can be used after different data adjustment, without the need for jig modification and self-establishment of the welding coordinate system, so that time and labor are saved and operation is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding technology for new energy vehicle production, in particular to a welding equipment for new energy vehicle production. BACKGROUND

[0002] With the rapid development of new energy vehicle industry, the welding quality of battery pack as a core component directly affects the safety and endurance performance of the whole vehicle, and the traditional welding mainly relies on mechanical clamping frame to fix the battery pack as a whole, and then controls the welding gun through the mechanical arm to perform welding operation. Such welding equipment still has the following problems:

[0003] 1. The existing battery pack is generally produced in large quantities. When developing new battery packs, the existing welding equipment needs to be modified and the welding coordinate system needs to be established manually. Since the quantity of the developed battery packs is small, it takes a lot of time and effort to develop;

[0004] 2. The existing welding equipment completely depends on the accuracy of the coordinate system to plan the welding path, and cannot perform self-adaptive detection during welding, which requires more coordinate points to determine and find, and the operation is complex and time-consuming. Therefore, we propose a welding equipment for new energy vehicle production. SUMMARY

[0005] In order to overcome the technical problems existing in the prior art, the present application provides a welding equipment for new energy vehicle production.

[0006] To solve the above technical problems, the present application provides the following technical scheme: a positioning plate is provided, a plurality of positioning holes are equidistantly arranged on the side surface of the positioning plate, a product piece and a welding assembly are arranged on the upper side of the positioning plate, and a positioning assembly is arranged on the upper side of the positioning plate corresponding to the position of the product piece;

[0007] The welding assembly comprises a double-shaft transfer module, a horizontal electric slide, a micro-mechanical arm and a welding gun, a fixed rod is fixedly arranged on the side surface of the end head of the micro-mechanical arm corresponding to the position of the welding gun, and an active rod, a first pressure sensor, a first spring, a damping ring and a first supporting cylinder are arranged in the fixed rod;

[0008] The positioning assembly comprises a mounting block and a first positioning block, the mounting block is internally provided with a movable block, a second ball, a second spring and a second supporting cylinder, the first positioning block is internally provided with a detection rod, a second pressure sensor and a third spring, a restraint frame is fixedly installed on the upper side of the first positioning block, the restraint frame is internally provided with a sliding rod, a restraint rod, a fourth spring and a third pressure sensor, a limiting frame is arranged on the upper side of the sliding rod, the limiting frame is internally provided with a locking block and a distance sensor, the sliding rod is internally provided with a limiting block and a third supporting cylinder, and a second positioning block is rotatably installed at the other end of the limiting frame.

[0009] Furthermore, the product component includes a battery box disposed on the upper side of the positioning plate, a protective plate disposed on the lower side of the battery box, and a support frame disposed inside the battery box and the support frame is fitted to the inner side of the battery box.

[0010] Furthermore, the dual-axis transfer modules are symmetrically fixed on the upper side of the positioning plate, the transverse electric slide is disposed between the dual-axis transfer modules and fixedly mounted on the side of the slide slider of the dual-axis transfer modules by a bracket, the micro-robotic arm is fixedly disposed on the side of the transverse electric slide slider, and the welding torch is fixedly disposed on the side of the end of the micro-robotic arm.

[0011] Furthermore, the fixed rod has a movable cavity on its side, the movable rod is movably installed inside the movable cavity and the movable rod part extends out of the movable cavity, the side of the movable rod away from the micro-manipulator is rotatably provided with a first ball, the first pressure sensor is fixedly installed on the wall of the movable cavity, the first spring is fixedly connected between the first pressure sensor and the side of the movable rod, the damping ring is movably sleeved on the side of the movable rod, and the first support cylinder is fixedly connected between the side of the damping ring and the wall of the movable cavity and is movably sleeved on the side of the movable rod.

[0012] Furthermore, the mounting block is threaded inside the positioning hole and is positioned on the lower side of the protective plate. A movable groove is provided on the upper side of the mounting block, and the movable block is movably mounted inside the movable groove. The second ball is rotatably mounted on the upper side of the movable block and is in contact with the lower side of the protective plate. The second spring is fixedly connected between the lower side of the movable block and the bottom wall of the movable groove. The second support cylinder is fixedly connected between the side of the second ball and the wall of the movable groove and is movably sleeved on the side of the second ball.

[0013] Furthermore, the first positioning block is threaded inside the positioning hole, and a slot is provided on the lower side of the first positioning block. The detection rod is movably installed inside the slot and is attached to the bottom wall of the positioning hole. The second pressure sensor is fixedly installed on the top wall of the slot, and the third spring is fixedly connected between the second pressure sensor and the side of the detection rod.

[0014] Furthermore, a sliding groove is provided on the upper side of the constraint frame, a sliding rod is vertically and movably installed inside the sliding groove and a portion of the sliding rod extends out of the sliding groove, a constraint rod passes through the sliding rod and is fixedly installed inside the sliding groove, a third pressure sensor is fixedly installed on the two side walls of the sliding groove away from the sliding rod and is movably sleeved on the side of the constraint rod, and a fourth spring is movably sleeved on the side of the sliding groove and is located between the sliding rod and the side of the third pressure sensor.

[0015] Furthermore, the limiting frame has a mating cavity on the side near the slide rod, and the slide rod is movably installed inside the mating cavity. The wall of the mating cavity has a through-hole connecting groove. The side of the slide rod has a side cavity corresponding to the connecting groove. The wall of the side cavity has mounting cavities at equal intervals. The limiting block is movably installed inside the mounting cavity, and the limiting block extends from the inside of the mounting cavity to the inside of the side cavity. The third support cylinder is fixedly connected between the side of the limiting block and the wall of the mounting cavity. The locking block is threaded inside the connecting groove and is slidably positioned inside the side cavity. The distance sensor is fixedly installed on the top wall of the mating cavity.

[0016] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0017] 1. This invention enables semi-automatic workpiece locking by setting up welding and positioning components. During the locking process, various sensors can be used for corner and height positioning to achieve automatic path operation from welding point to point. The welding distance can be detected in real time during welding, and fine-tuning compensation can be performed to ensure welding quality. It is perfectly adapted to the production of small-batch new products and can be used after adjusting different data. There is no need to modify the fixture or establish the welding coordinate system itself, which saves time and effort and is convenient to operate.

[0018] 2. By setting up product components, the protective plate can enhance the safety protection of the battery box, and the support frame can be used to stabilize the battery box before installing the battery block. This can ensure the battery pack's subsequent self-safety guarantee and its own strength.

[0019] 3. By setting up a movable rod and its surrounding components, the present invention can realize dynamic monitoring and position compensation during welding. Specifically, the movable rod contacts the workpiece through the rolling of the first ball, the first pressure sensor detects the pressure change in real time, and combined with the elastic feedback of the first spring, dynamically compensates the vertical distance between the welding torch and the weld, ensuring high-quality welding operation.

[0020] 4. The present invention can achieve buffer protection by setting a first support cylinder and a damping ring. Specifically, the first support cylinder and the damping ring form a composite buffer structure. When the movable rod detaches from the workpiece surface, the impact energy is absorbed by the deformation of the first support cylinder, so as to avoid the vibration of the robotic arm affecting the welding quality and the movable rod impacting the side of the product part.

[0021] 5. By setting up an installation block and its surrounding components, when the product is not locked, the movable block is elastically supported by the second spring and the second support cylinder and slides out of the movable groove. The second ball bearing provides rotational support for the protective plate, so the position of the protective plate can be manually moved and adjusted. When the product is locked, the protective plate presses the movable block and slides completely into the movable groove. At this time, the lower side of the protective plate is fixedly supported against the upper side of the installation block, ensuring stable support for the battery box and the protective plate, so that multiple states can be switched without manual operation.

[0022] 6. By setting a first positioning block and its surrounding components, the positioning of the first positioning block itself can provide a safe fixed point during welding, avoiding operational interference and collisions during welding. In addition, the detection rod is squeezed inside the slot, and the detection rod squeezes the corresponding third spring to deform appropriately. This allows the constraint frame to face the corner of the battery box, and the position at this time is recorded as the height origin, which is then used to establish the height coordinates with subsequent components.

[0023] 7. This invention sets up a limiting frame and a limiting block and its surrounding components. Pressing the limiting frame can press and lock the corners of the product part. The second positioning block initially determines the position of each corner of the product part and establishes the welding path from corner to corner. The limiting block in the side cavity adopts an elastic limiting design. By turning the locking block, the position of the limiting frame can be locked with one click. It is easy to operate and highly adaptable.

[0024] 8. By setting a third pressure sensor and its surrounding components, when the limiting frame is squeezed, the slide rod slides inside the slide groove under the constraint of the constraint rod. The compression of the slide rod corresponds to the deformation of the fourth spring, which applies pressure to the third pressure sensor. The third pressure sensor detects the pressure signal of the limiting frame and accurately determines the end point of the path. In addition, in conjunction with the first positioning block, the second positioning block and the distance sensor, the position and height are determined, and a more complete coordinate system is established, so that the welding path welding operation of the second junction point of the battery box and the support frame can be automatically performed. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the product component of the present invention;

[0027] Figure 3 This is a schematic diagram of the welding assembly of the present invention;

[0028] Figure 4 This is a partial structural schematic diagram of the micro-manipulator of the present invention;

[0029] Figure 5 This is a partial structural schematic diagram of the fixing rod of the present invention;

[0030] Figure 6 This is a cross-sectional structural diagram of the present invention;

[0031] Figure 7 For the present invention Figure 6 A magnified structural diagram at point A;

[0032] Figure 8 This is a partial structural schematic diagram of the first positioning block of the present invention;

[0033] Figure 9This is an exploded view of the first positioning block of the present invention;

[0034] Figure 10 This is a partial structural schematic diagram of the mounting block of the present invention;

[0035] Figure 11 This is a schematic diagram of the positioning component of the present invention;

[0036] Figure 12 This is a partial structural schematic diagram of the constraint frame of the present invention;

[0037] Figure 13 This is a partial structural schematic diagram of the slide bar of the present invention;

[0038] Figure 14 This is a partial structural diagram of the limiting frame of the present invention.

[0039] The components include: 1. Positioning plate; 11. Positioning hole; 2. Product component; 21. Battery box; 22. Protective plate; 23. Support frame; 3. Welding assembly; 31. Dual-axis transfer module; 32. Lateral electric slide; 33. Micro-robotic arm; 34. Welding torch; 35. Fixed rod; 36. Movable cavity; 361. Movable rod; 362. First ball bearing; 363. First pressure sensor; 364. First spring; 365. Damping ring; 366. First support cylinder; 4. Positioning assembly; 41. Mounting block; 411. Movable groove; 412. Movable block; 413. Second ball bearing; 4 14. Second spring; 415. Second support cylinder; 42. First positioning block; 421. Slot; 422. Detection rod; 423. Second pressure sensor; 424. Third spring; 43. Constraint frame; 431. Slide groove; 432. Constraint rod; 433. Fourth spring; 434. Third pressure sensor; 44. Slide rod; 441. Side cavity; 442. Mounting cavity; 443. Limiting block; 444. Third support cylinder; 45. Limiting frame; 451. Mating cavity; 452. Connecting groove; 453. Locking block; 454. Distance sensor; 46. Second positioning block. Detailed Implementation

[0040] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0041] Example: Figure 1As shown, a welding equipment for the production of new energy vehicles includes a positioning plate 1, which is a rectangular base plate. Positioning holes 11 are equidistantly opened on the side of the positioning plate 1. The positioning holes 11 are cylindrical threaded grooves. A product part 2 and a welding assembly 3 that can be positioned and welded are arranged on the upper side of the positioning plate 1. A positioning assembly 4 that can position the product is arranged on the upper side of the positioning plate 1 corresponding to the position of the product part 2.

[0042] like Figure 2 As shown, product component 2 includes a battery box 21 disposed on the upper side of positioning plate 1. The battery box 21 is a rectangular box with a hollowed-out side. A protective plate 22 is disposed on the lower side of the battery box 21. The first welding operation is performed at the junction of the battery box 21 and the protective plate 22, which is the first welding point. A support frame 23 is disposed inside the battery box 21 and the support frame 23 is attached to the inner side of the battery box 21. The support frame 23 is a mesh rectangular frame, which can be used to stabilize the battery box 21 and install the battery block. The second welding is performed at the junction of the support frame 23 and the battery box 21, which is the second welding point.

[0043] The welding component 3 can be positioned and guided to perform welding operations on the product part 2;

[0044] like Figure 1 and Figures 3 to 5As shown, the welding assembly 3 includes a dual-axis transfer module 31 symmetrically fixed on the upper side of the positioning plate 1. The dual-axis transfer module 31 is a combination of two sets of electrically controlled slides in a horizontal and vertical configuration. A transverse electric slide 32 is provided between the dual-axis transfer modules 31 and is fixedly mounted on the side of the slide slider of the dual-axis transfer module 31 by a bracket. A micro-manipulator 33 is fixedly provided on the side of the slide slider of the transverse electric slide 32. The micro-manipulator 33 is a universal micro-manipulator. The dual-axis transfer module 31 and the transverse electric slide 32 can drive the micro-manipulator 33 to perform three-dimensional spatial movement operations. The micro-manipulator 33 can then drive subsequent components to perform universal angle adaptation welding operations. A welding torch 34 is fixedly provided on the side of the end of the micro-manipulator 33 and is electrically connected to an external controller via wires. The welding torch 34 can perform normal welding work. A fixed rod 35 is fixedly installed on the side of the end of the micro-manipulator 33 corresponding to the position of the welding torch 34. The fixed rod 35 is a cylindrical rod. A movable cavity 36 is opened on the side of the fixed rod 35. The movable cavity 36 is a convex cylindrical cavity. A movable rod 361 is movably installed inside the movable cavity 36, and part of the movable rod 361 extends out of the movable cavity 36. The movable rod 361 is a T-shaped cylindrical rod. A first ball bearing 362 is rotatably installed on the side of the movable rod 361 away from the micro-manipulator 33. The first ball bearing 362 is a spherical block. A first pressure sensor 363 is fixedly installed on the wall of the movable cavity 36. The first pressure sensor 363 can be a model that can detect micro pressure. The first pressure sensor 363 and the movable rod 361 are connected in a series of steps. A first spring 364 is fixedly connected between the sides of the movable rod 361. A damping ring 365 is movably sleeved on the side of the movable rod 361. The damping ring 365 is a rubber ring block. A first support cylinder 366 is fixedly connected between the side of the damping ring 365 and the wall of the movable cavity 36, and the first support cylinder 366 is movably sleeved on the side of the movable rod 361. The first support cylinder 366 is a corrugated cylinder made of elastic material. Specifically, the welding torch 34 can be moved in three directions in a spatial manner by the dual-axis transfer module 31 and the transverse electric slide 32. With the help of the micro-robotic arm 33, the welding torch 34 can be adjusted in all directions to adapt to different welding points for welding operations. During welding, the movable rod 361 is rolled on the battery box 21 or the protective plate 22 by the first ball 362. In the side position, the movable rod 361 slides and compresses the first spring 364 inside the movable cavity 36, deforming it. The pressure change is detected by the first pressure sensor 363 and fed back to the external controller. The controller can then drive the welding torch 34 to perform welding operations at a suitable distance from the welding point. During the welding process, timing control and position detection are performed simultaneously. When the first ball bearing 362 rolls on the side of the battery box 21 or the protective plate 22 from a high point to a low point, when the movable rod 361 disengages from the contact surface, it quickly resets under the elastic restoring force of the first spring 364. At this time, the movable rod 361 will impact the side of the damping ring 365. The first support cylinder 366 provides elastic support and damping for the movable rod 361, preventing the movable rod 361 from suddenly popping out and causing damage.

[0045] The product part 2 can be constrained and fixed by the positioning component 4, and then the three-dimensional welding point of the product part 2 can be positioned. The welding position can also be detected during welding.

[0046] like Figures 6 to 14 As shown, the positioning component 4 includes a mounting block 41 threaded into the positioning hole 11 and positioned on the lower side of the protective plate 22. The mounting block 41 is a T-shaped cylindrical block with threads on its side. A movable groove 411 is formed on the upper side of the mounting block 41. The movable groove 411 is a cylindrical groove with a T-shaped cross-section. A movable block 412 is movably mounted inside the movable groove 411. The movable block 412 is a T-shaped cylindrical block. A second ball bearing 413 is rotatably mounted on the upper side of the movable block 412 and fits against the lower side of the protective plate 22. The second ball bearing 413 is a spherical block. A second spring 414 is fixedly connected between the lower side of the movable block 412 and the bottom wall of the movable groove 411. A second support cylinder 415 is fixedly connected between the side of the second ball bearing 413 and the wall of the movable groove 411. 415 is movably sleeved on the side of the second ball bearing 413. The second support cylinder 415 is a corrugated cylinder made of elastic material. Specifically, the second spring 414 and the second support cylinder 415 can provide reinforced elastic support for the movable block 412. When the protective plate 22 is placed on the upper side of the second ball bearing 413, the movable block 412 is slightly slid out of the movable groove 411 under the elastic support of the second spring 414 and the second support cylinder 415. The protective plate 22 can be moved to its side under the rotational support of the second ball bearing 413, which facilitates the overall position adjustment of the product part 2. When the product part 2 is locked and constrained, the whole is subjected to downward pressure. When the protective plate 22 is pressed down, the pressure is transmitted through the second ball bearing 413, forcing the movable block 412 to retract completely into the movable groove 411. At this time, the lower side of the protective plate 22 is stably supported against the upper side of the mounting block 41.

[0047] The first positioning block 42 is threaded inside the positioning hole 11 and corresponds to the side position of the battery box 21. The first positioning block 42 has a threaded "T"-shaped cylindrical block on its side, and a positioning sensor is provided on its side. The positioning sensor can feed back the position positioning signal to an external controller, which can then record the position and determine its location on the upper side of the positioning plate 1 for use as the position point for subsequent welding of the assembly 3. A slot 421 is formed on the lower side of the first positioning block 42. The slot 421 is a convex cylindrical cavity. A detection rod 422 is movably installed inside the slot 421 and fits against the bottom wall of the positioning hole 11. The detection rod 422 is a "T"-shaped cylindrical rod. A second pressure sensor 423 is fixedly installed on the top wall of the slot 421. The second pressure sensor 423 can be a model that detects micro pressure. A third spring 424 is fixedly connected between the second pressure sensor 423 and the side of the detection rod 422. Specifically, the first positioning block 42 is installed inside the positioning hole 11 on the side of the corresponding battery box 21. The first positioning block 42 is used for preliminary positioning and is recorded as the installation position of the auxiliary frame to avoid subsequent welding impact on the auxiliary frame. The other detection rod 422 is squeezed and slides inside the slot 421. The detection rod 422 squeezes the third spring 424 and deforms accordingly. The pressure detected by the second pressure sensor 423 is fed back to the external controller to determine the origin position of the height.

[0048] A constraint frame 43 is fixedly installed on the upper side of the first positioning block 42. The constraint frame 43 is an arc-shaped plate. A sliding groove 431 is provided on the upper side of the constraint frame 43. The sliding groove 431 is an arc-shaped groove with a convex cross-section. A sliding rod 44 is vertically and movably installed inside the sliding groove 431, and part of the sliding rod 44 extends out of the sliding groove 431. The sliding rod 44 is a "T"-shaped round rod. A limit frame 45 is provided on the upper side of the sliding rod 44. The limit frame 45 is an "L"-shaped cylindrical frame. A mating cavity 451 is provided on the side of the limit frame 45 near the sliding rod 44, and the sliding rod 44 is movably installed inside the mating cavity 451. The mating cavity 451 is a "T"-shaped cylindrical groove. A connecting groove 452 is provided through the mating cavity 451. The connecting groove 452 is a convex cylindrical groove. A threaded groove is provided on the side of the slide rod 44, corresponding to the position of the connecting groove 452. The side cavity 441 is a rectangular groove. Mounting cavities 442 are equidistantly provided on the wall of the side cavity 441. The mounting cavities 442 are cylindrical grooves. A limiting block 443 is movably installed inside the mounting cavity 442, with a portion of the limiting block 443 extending from the interior of the mounting cavity 442 into the interior of the side cavity 441. The limiting block 443 is a cylindrical block. A third support cylinder 444 is fixedly connected between the side of the limiting block 443 and the wall of the mounting cavity 442. The third support cylinder 444 is a corrugated cylinder made of elastic material. A locking block 453 is threadedly installed inside the connecting groove 452 and slidably positioned inside the side cavity 441. The locking block 453 is a convex cylindrical block. In the mating cavity 451... A distance sensor 454 is fixedly installed on the top wall. The distance sensor 454 can be a sensor model suitable for detecting minute distances. A second positioning block 46 is rotatably installed on the other end of the limiting frame 45. The second positioning block 46 is a convex circular block, and its side is also equipped with a positioning sensor. Specifically, after the first positioning block 42 is installed, the constraint frame 43 corresponds to one corner of the battery box 21. First, the locking block 453 is threaded into the connecting groove 452, with a portion slightly sliding inside the side cavity 441. The locking block 453 does not contact the limiting block 443. Pressing the limiting frame 45 downwards causes the second positioning block 46 to adhere to the upper side of the battery box 21. Applying pressure to the battery box 21, the lower side of the protective plate 22 adheres to the upper side of the mounting block 41. Subsequently... Twisting the locking block 453 slides into the side cavity 441, and the locking block 453 presses the corresponding position limiting block 443 into the mounting cavity 442. In this way, the locking block 453 can be limited by the corresponding limiting block 443, completing the pressing and locking operation of the battery box 21. In addition, the distance sensor 454 detects the distance of the slide rod 44 and feeds it back to the external controller. By determining the height origin at the front end, the height spatial position of the battery box 21 can be determined, thus completing the positioning and height determination of each corner of the battery box 21. During welding, the horizontal electric slide 32, the micro-robotic arm 33 and the welding gun 34 drive the welding gun 34 to perform welding. The welding logic is a straight path from one corner to another. With the real-time detection of the moving rod 361 during welding, a semi-automatic adaptation welding operation is completed.When the welding torch 34 moves to one corner of the battery box 21, the welding torch 34 or the fixing rod 35 will contact the side of the limiting frame 45. At this time, the limiting frame 45 can rotate with the second positioning block 46 as the rotation center, and the sliding rod 44 rotates in the sliding groove 431 to avoid welding interference.

[0049] A constraint rod 432, which passes through the slide rod 44, is fixedly installed inside the slide groove 431. The constraint rod 432 is an arc-shaped round rod. A third pressure sensor 434 is fixedly installed on the two side walls of the slide groove 431 away from the slide rod 44, and the third pressure sensor 434 is movably sleeved on the side of the constraint rod 432. The third pressure sensor 434 can be a ring sensor model that can detect minute pressure. A fourth spring 433 is movably sleeved on the side of the slide groove 431, and the fourth spring 433 is located between the slide rod 44 and the side of the third pressure sensor 434. Specifically, the limiting frame 45 rotates under compression. At this time, the slide bar 44 slides inside the slide groove 431 under the constraint of the constraint bar 432. At this time, the fourth spring 433 on the corresponding side is compressed and deformed. The constraint bar 432 applies pressure to the side of the third pressure sensor 434. Through the pressure feedback of the third pressure sensor 434 and the external controller, it can be known that the welding torch 34 has reached the end of the path. At the same time, it can further assist in judging the position of each corner of the battery box 21. After completing the welding of each side between the battery box 21 and the protective plate 22, a more complete coordinate system of the product part 2 is established, and the welding operation at the junction of the battery box 21 and the support frame 23 can be performed.

[0050] Working principle:

[0051] Before use: First, load the components. Move each part of the welding assembly 3 to the waiting area, i.e., one side of the positioning plate 1. Install four sets of mounting blocks 41 into the corresponding positioning holes 11. Move the product part 2 as a whole to the upper side of the mounting block 41 using the gantry crane. The product part 2 can be locked together with the battery box 21 and the protective plate 22 by manual clamps. Alternatively, the protective plate 22 can be hoisted first and then the battery box 21 can be hoisted together. When the product part 2 is placed on the upper surface of the mounting block 41, the movable block 412 is elastically supported by the second spring 414 and the second support cylinder 415 and slides out of the movable groove 411. The second ball bearing 413 provides rotational support for the protective plate 22. The protective plate 22 can then be manually moved. After the battery box 21 and the protective plate 22 are perfectly combined with the level, adjust the sides of the battery box 21 and the protective plate 22 to be parallel and correspond to the sides of the positioning plate 1.

[0052] The second step involves adjusting and locking. After the position of product component 2 is adjusted, the first positioning block 42 is installed inside the positioning hole 11 at the corresponding corner of the side of the battery box 21, so that the constraint frame 43 faces the corresponding corner of the battery box 21. At this time, the position of the first positioning block 42 is recorded as the safe position of the auxiliary frame. The synchronous detection rod 422 is pressed inside the slot 421. The detection rod 422 compresses the corresponding third spring 424 and deforms appropriately. After the second pressure sensor 423 detects the corresponding pressure, it feeds back to the external controller. The controller records the origin position of the height at this time. Then, the limit frame 45 is pressed down so that the second positioning block 46 is pressed against the side of the corner of the battery box 21. The slide rod 44 is in the mating cavity 451. The sliding mechanism detects the distance position of the sliding rod 44 by the distance sensor 454. The controller then drives the upper part of the battery box 21 to rotate and slide the locking block 453 into the side cavity 441. The locking block 453 presses against the corresponding limiting block 443 and slides into the mounting cavity 442. The locking block 453 is then limited by the limiting block 443 that pops out from the third support cylinder 444. The limiting frame 45 can then press and lock the battery box 21. When the protective plate 22 is subjected to downward pressure, the protective plate 22 presses against the movable block 412 and completely slides into the movable groove 411. At this time, the lower side of the protective plate 22 is fixedly supported against the upper side of the mounting block 41, ensuring the stable locking operation of the battery box 21 and the protective plate 22.

[0053] In use: First, drive the welding process. Input the various dimensions of product part 2 into the program and execute the welding program. When the front end is installed and locked, the positions of each corner and the height of the battery box 21 are determined. The controller itself calculates the path position between the height and corners of the junction of the battery box 21 and the protective plate 22. In addition, the position of the first positioning block 42 is marked for appropriate avoidance. The dual-axis transfer module 31 and the micro-robotic arm 33 can perform three-dimensional movement operations on the upper side of the positioning plate 1 according to each coordinate. The micro-robotic arm 33 can adjust the angle of the welding gun 34 in all directions to perfectly adapt to the welding path and avoid the position of the first positioning block 42. During welding, the movable rod 361 is attached to the side of the battery box 21 or the protective plate 22. The movable rod 361 compresses the first spring 364 and deforms it. The pressure detected by the first pressure sensor 363 is monitored in real time to compensate the position of the welding gun 34, ensuring that the distance between the welding gun 34 and the junction of the battery box 21 and the protective plate 22 is constant, thus ensuring the quality of the welding.

[0054] The second step is corner safety detection. When the welding path reaches the end, the welding gun 34 or the fixing rod 35 will press against the side of the limiting frame 45. The limiting frame 45 rotates around the second positioning block 46 as the rotation center, causing the slide rod 44 to slide inside the slide groove 431 under the constraint of the constraint rod 432. The slide rod 44 presses the corresponding fourth spring 433 to deform. The pressure signal is detected by the third pressure sensor 434 to determine that the welding is completed. The welding point at this time is recorded as the corner. In this way, the dual-axis transfer module 31, the horizontal electric slide table 32 and the micro-robotic arm 33 drive the welding gun 34 to continue the welding operation from the other corner position to other corner positions. In this way, all welding operations of the first welding point between the battery box 21 and the protective plate 22 are completed.

[0055] The third step is automatic coordinate system calibration. After the welding of each side of the first welding point between the battery box 21 and the protective plate 22 is completed, the position of the corner of the battery box 21 is determined again by the compression of the limit frame 45 at each corner. In conjunction with the three-dimensional point position at the front end, the controller determines and improves the overall space of the product part 2 according to the size data of the product part 2, so as to carry out the automated welding path welding operation of the second junction point between the battery box 21 and the support frame 23. During synchronous welding, the movable rod 361 is compressed, and the welding gun 34 can be detected in real time to maintain a certain distance for welding operation.

[0056] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A welding equipment for the production of new energy vehicles, comprising a positioning plate (1), positioning holes (11) are provided at equal intervals on the upper side of the positioning plate (1), a product part (2) and a welding assembly (3) are provided on the upper side of the positioning plate (1), and a positioning assembly (4) is provided on the upper side of the positioning plate (1) corresponding to the position of the product part (2). Its features are: The welding assembly (3) includes a biaxial transfer module (31), a transverse electric slide (32), a micro-manipulator (33) and a welding torch (34). A fixed rod (35) is fixedly provided on the side of the end of the micro-manipulator (33) corresponding to the position of the welding torch (34). The fixed rod (35) is provided with a movable rod (361), a first pressure sensor (363), a first spring (364), a damping ring (365) and a first support cylinder (366) inside. The dual-axis transfer module (31) is symmetrically fixed on the upper side of the positioning plate (1). The transverse electric slide (32) is set between the dual-axis transfer modules (31) and fixedly installed on the side of the slide slider of the dual-axis transfer module (31) by a bracket. The micro-manipulator (33) is fixedly set on the side of the slide slider of the transverse electric slide (32). The welding gun (34) is fixedly set on the side of the end of the micro-manipulator (33). The movable rod (361) is movably installed inside the movable cavity (36) and the movable rod (361) extends out of the movable cavity (36). The first pressure sensor (363) is fixedly installed on the wall of the movable cavity (36). The first spring (364) is fixedly connected between the first pressure sensor (363) and the side of the movable rod (361). The damping ring (365) is movably sleeved on the side of the movable rod (361). The first support cylinder (366) is fixedly connected between the side of the damping ring (365) and the wall of the movable cavity (36), and the first support cylinder (366) is movably sleeved on the side of the movable rod (361). The positioning component (4) includes a mounting block (41) and a first positioning block (42). The mounting block (41) is provided with a movable block (412), a second ball bearing (413), a second spring (414), and a second support cylinder (415). The first positioning block (42) is provided with a detection rod (422), a second pressure sensor (423), and a third spring (424). A constraint frame (43) is fixedly mounted on the upper side of the first positioning block (42). The constraint frame (43) is provided with a slide rod (44), a constraint rod (432), a fourth spring (433), and a third pressure sensor (434). A limit frame (45) is provided on the upper side of the slide rod (44). A locking block (453) and a distance sensor (454) are provided inside the limit frame (45). A limit block (443) and a third support cylinder (444) are provided inside the slide rod (44). A second positioning block (46) is rotatably mounted on the other end of the limit frame (45). The mounting block (41) is threaded into the positioning hole (11). The upper side of the mounting block (41) is provided with a movable groove (411). The movable block (412) is movably installed inside the movable groove (411). The second ball (413) is rotatably installed on the upper side of the movable block (412). The second spring (414) is fixedly connected between the lower side of the movable block (412) and the bottom wall of the movable groove (411). The second support cylinder (415) is fixedly connected between the side of the second ball (413) and the wall of the movable groove (411). The first positioning block (42) is threaded inside the positioning hole (11). A slot (421) is provided on the lower side of the first positioning block (42). The detection rod (422) is movably installed inside the slot (421). The second pressure sensor (423) is fixedly installed on the top wall of the slot (421). The third spring (424) is fixedly connected between the second pressure sensor (423) and the side of the detection rod (422). The upper side of the constraint frame (43) is provided with a slide groove (431), the slide rod (44) is vertically and movably installed inside the slide groove (431), the constraint rod (432) passes through the slide rod (44) and is fixedly installed inside the slide groove (431), the third pressure sensor (434) is fixedly installed on the two side walls of the slide groove (431) away from the slide rod (44), and the fourth spring (433) is movably sleeved on the outside of the constraint rod (432); The limiting frame (45) has a mating cavity (451) on the side near the slide rod (44), and a connecting groove (452) is provided through the wall of the mating cavity (451). A side cavity (441) is provided on the side of the slide rod (44) corresponding to the position of the connecting groove (452). An installation cavity (442) is provided at equal intervals on the wall of the side cavity (441). The limiting block (443) is movably installed inside the installation cavity (442). The third support cylinder (444) is fixedly connected between the side of the limiting block (443) and the wall of the installation cavity (442). The locking block (453) is threadedly installed inside the connecting groove (452). The distance sensor (454) is fixedly installed on the top wall of the mating cavity (451).

2. The welding equipment for new energy vehicle production according to claim 1, characterized in that: The product component (2) includes a battery box (21) disposed on the upper side of the positioning plate (1), a protective plate (22) disposed on the lower side of the battery box (21), and a support frame (23) disposed inside the battery box (21) and the support frame (23) is attached to the inner side of the battery box (21).

3. The welding equipment for new energy vehicle production according to claim 2, characterized in that: The fixed rod (35) has a movable cavity (36) on its side, and the movable rod (361) has a first ball bearing (362) rotatably mounted on its side away from the micro-mechanical arm (33).

4. The welding equipment for new energy vehicle production according to claim 3, characterized in that: The mounting block (41) is located on the lower side of the protective plate (22), the second ball (413) is attached to the lower side of the protective plate (22), the second support cylinder (415) is movably sleeved on the side of the second ball (413), and the detection rod (422) is attached to the bottom wall of the positioning hole (11).

5. The welding equipment for new energy vehicle production according to claim 4, characterized in that: The slide bar (44) extends out of the inside of the slide groove (431), the third pressure sensor (434) is movably sleeved on the side of the constraint rod (432), and the fourth spring (433) is disposed between the slide bar (44) and the side of the third pressure sensor (434).

6. The welding equipment for new energy vehicle production according to claim 5, characterized in that: The slide bar (44) is movably installed inside the mating cavity (451), the limiting block (443) extends out of the mounting cavity (442) into the side cavity (441), and the locking block (453) is slidably installed inside the side cavity (441).

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