A new energy forklift truck production welding device

Abstract

This invention discloses a welding device for the production of new energy forklifts, including a workbench, a side panel assembly, an elastic fixing assembly, a drive and mounting platform, a pushing and fixing assembly, and a welding execution unit. The workbench has a concave position and a through-hole, with the through-hole located at the concave position. The side panel assembly has a movable execution end, forming a mounting position together with the concave position. The elastic fixing assembly is located on the workbench and adjacent to one end of the concave position. The drive and mounting platform includes a drive mechanism and a mounting frame. The mounting frame can move towards or away from the mounting position under the drive mechanism, engaging with the elastic fixing assembly when it reaches a predetermined position, driving it to press against the back plate. The pushing and fixing assembly is located on the mounting frame, pushing the fork blade to a target position that fits against the back plate and fixing it. The workbench has a fork blade position to accommodate and guide the movement of the fork blade, ensuring that its upper surface fits against the lower surface of the back plate when it reaches the target position. The welding execution unit performs welding actions after reaching the welding position.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and more specifically, to a welding device for the production of new energy forklifts. Background Technology

[0002] The forks of new energy forklifts are typically welded together from a backplate and two blades, and the fork structure is as follows: Figure 4 As shown. In the prior art, the welding of forks is mostly done manually or semi-automatically, for example, by roughly positioning the back plate and fork blades with a clamp before welding.

[0003] However, existing positioning methods often require operators to repeatedly adjust the positions of the back plate and the fork to ensure a tight fit and accurate relative positioning. This method is not only time-consuming and labor-intensive, but its positioning accuracy is also greatly affected by human factors, leading to unstable welding quality. Furthermore, existing devices make workpiece transfer inconvenient after welding, further reducing production efficiency. Therefore, a device is needed that can achieve rapid, accurate positioning and stable welding of the back plate and the fork. Summary of the Invention

[0004] The main objective of this application is to provide a welding device and a welding method for new energy forklift forks, so as to solve the technical problems of complex positioning of the back plate and fork blade and low welding efficiency in the prior art, and realize the technical effect of automatic positioning, bonding and welding of the back plate and fork blade, thereby improving welding quality and production efficiency.

[0005] This invention provides a welding device for the production of new energy forklifts, comprising: a workbench for supporting a back plate and fork blades to be welded, the workbench having a concave portion and a through opening extending along its length, the concave portion for accommodating and limiting both sides of the back plate, and the through opening being located at the concave portion; a baffle assembly disposed on the workbench and cooperating with the through opening, the baffle assembly having a movable actuator end configured to selectively pass through the through opening to form a mounting position for positioning the back of the back plate together with the concave portion; an elastic fixing assembly disposed on the workbench and adjacent to one end of the concave portion; and a drive and mounting platform disposed on the workbench, the drive and mounting platform including a drive mechanism and a mounting frame driven by the drive mechanism, the mounting frame being configured to face or move away from the mounting frame under the drive of the drive mechanism. The device includes a mounting mechanism that can engage with the elastic fixing component when it moves to a predetermined position, thereby driving the elastic fixing component to press against the back plate located within the mounting position; a pushing and fixing component, which is disposed on the mounting frame, is configured to push the fork knife located on the worktable to a target position that abuts against the back plate, and fix the fork knife after it reaches the target position; a welding execution unit, which includes a robotic arm disposed on the mounting frame and a welding torch disposed at the execution end of the robotic arm, and performs welding actions after reaching the welding station; wherein, the worktable is also provided with a fork knife position adjacent to the concave position, the fork knife position being configured to accommodate and guide the movement of the fork knife when the pushing and fixing component pushes the fork knife, and to make the upper surface of the fork knife abut against the lower surface of the back plate located within the mounting position when it reaches the target position.

[0006] In one embodiment, the barrier assembly includes: a telescopic drive member disposed on the workbench; and a barrier member connected to the output end of the telescopic drive member, the size of which matches the through opening; wherein the telescopic drive member is configured to drive the barrier member through the through opening to form the mounting position, or to retract from the through opening.

[0007] In one embodiment, the elastic fixing assembly includes: an elastic preload unit disposed at one end of the drive and mounting platform near the mounting position; and a locking unit disposed at one end of the elastic preload unit near the mounting position; wherein the elastic preload unit is configured to elastically abut against the back plate when the mounting bracket is not engaged with the elastic fixing assembly; and to drive the locking unit to rigidly press against the back plate when the mounting bracket is engaged with the elastic fixing assembly.

[0008] In one embodiment, the pushing and fixing component includes: a pushing unit disposed on the mounting bracket and configured to drive the fork blade to move along the fork blade position; and an adsorption unit disposed at one end of the pushing unit near the fork blade and configured to adsorb and fix the fork blade.

[0009] In one embodiment, the elastic preload unit includes: a sliding sleeve fixedly disposed therein; a movable rod slidably disposed within the sliding sleeve; a limiting member disposed at the end of the movable rod away from the mounting position; and an elastic member sleeved on the movable rod and located between the locking unit and the sliding sleeve; wherein the locking unit is fixed to the end of the movable rod near the mounting position; the elastic member provides a preload force that causes the movable rod to move the locking unit toward the mounting position; the mounting bracket is configured to abut against the limiting member or the movable rod when moved to the predetermined position, thereby overcoming the preload force of the elastic member and driving the locking unit to rigidly press against the back plate.

[0010] In one embodiment, the locking unit is an electromagnetic locking element, which is configured to be energized when the mounting bracket drives the moving rod to rigidly press the electromagnetic locking element against the back plate.

[0011] In one embodiment, the elastic fixing component further includes a guide structure disposed on the locking unit, the guide structure forming an inclined guide opening between the top of the mounting position and the top of the mounting position.

[0012] In one embodiment, the pushing unit includes: a telescopic drive member disposed on the mounting bracket; a moving member connected to the output end of the telescopic drive member; wherein the adsorption unit is disposed on the side of the moving member close to the fork; the telescopic drive member is configured to drive the moving member and the adsorption unit to move closer to or away from the fork.

[0013] In one embodiment, the movable component includes a movable block slidably disposed on the mounting frame, and support rods symmetrically disposed on both sides of the movable block; the movable block is connected to the telescopic end of the telescopic drive component, and the adsorption unit is disposed on the two support rods.

[0014] In one embodiment, the adsorption unit is an electromagnetic adsorption element, which is configured to: energize to adsorb the fork when the moving member drives the fork to move; de-energize to release after the fork reaches the target position; and re-energize to fix the fork after the mounting bracket moves to the predetermined position.

[0015] In one embodiment, the workbench includes two grooves arranged parallel to each other along its length, a central platform is formed between the two grooves, and a side platform is formed on the outer side of the two grooves. The height of the central platform is less than the height of the side platform to jointly enclose the concave position. The through opening is opened on the central platform. The fork position is jointly defined by the groove wall of the groove, the side wall of the central platform, and the execution end of the baffle assembly.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes the concave position of the workbench and the mounting position formed by the baffle assembly to achieve rapid positioning of the back plate on both sides and the back. Then, an elastic fixing component, driven by the mounting frame, tightens the back plate, providing stable support. Simultaneously, a pushing and fixing component pushes the fork along its designated position to the target location, ensuring accurate contact between the upper surface of the fork and the lower surface of the back plate. The fork is then fixed after the mounting frame moves to the predetermined position. Because the mounting frame simultaneously drives the elastic fixing component to tighten the back plate and fixes the fork via the pushing and fixing component, the back plate and fork form a stable assembly before welding, eliminating the need for manual adjustment. Furthermore, after welding, the baffle assembly, pushing and fixing component, etc., reset, leaving the fork position unobstructed, allowing for convenient transfer of the welded forks along the fork position. Therefore, this application effectively solves the problems of complex and inefficient positioning of the back plate and fork in the prior art, achieving automatic positioning, contact, and welding, significantly improving welding quality and production efficiency. Attached Figure Description

[0017] Figure 1 A schematic front view of a welding apparatus for producing new energy forklifts provided in an embodiment of this application; Figure 2 for Figure 1 The enlarged view of part A in the middle mainly shows the structure of the elastic fixing component; Figure 3 for Figure 1 The enlarged view of part B mainly shows the structure of the push and fixation components; Figure 4 This is a structural diagram of the forks of a new energy forklift. The components are as follows: 10. Workbench; 11. Concave position; 12. Through opening; 13. Groove; 14. Central platform; 15. Side platform; 16. Rotating roller; 20. Guardrail assembly; 21. Telescopic drive component; 22. Guardrail component; 30. Elastic fixing component; 31. Sliding sleeve; 32. Moving rod; 33. Limiting component; 34. Elastic component; 35. Locking unit; 36. Guide structure; 40. Drive and installation platform; 41. Drive mechanism; 42. Mounting frame; 50. Push and fixing assembly; 51. Pushing unit; 511. Telescopic drive component; 512. Moving component; 513. Moving block; 514. Support rod; 52. Adsorption unit; 60. Welding execution unit; 61. Robotic arm; 62. Welding torch. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] The welding device for new energy forklift production provided in this application embodiment is used to assemble and weld the back plate and two fork blades with high precision and high efficiency, and is particularly suitable for assembly line operation environments.

[0020] like Figures 1-3As shown, the welding device for producing new energy forklifts includes a workbench 10, a baffle assembly 20, a flexible fixing assembly 30, a drive and mounting platform 40, a pushing and fixing assembly 50, and a welding execution unit 60. The workbench 10 supports the backplate and fork blades to be welded. The workbench 10 has a concave portion 11 extending along its length and a through opening 12. The concave portion 11 accommodates and limits the length of both sides of the backplate, and the through opening 12 is located at the concave portion 11. The baffle assembly 20 is disposed on the workbench 10 and cooperates with the through opening 12. The baffle assembly 20 has a movable execution end configured to selectively pass through the through opening 12 to form a mounting position for positioning the back of the backplate together with the concave portion 11. The flexible fixing assembly 30 is disposed on the workbench 10 and adjacent to one end of the concave portion 11. The drive and mounting platform 40 is disposed on the workbench 10. The drive and mounting platform 40 includes a drive mechanism 41 and a mounting frame 42 driven by the drive mechanism 41. The mounting frame 42 is configured to move toward or away from the mounting position under the drive of the drive mechanism 41, and can engage with the elastic fixing component 30 when it moves to a predetermined position, thereby driving the elastic fixing component 30 to press against the back plate located within the mounting position. The push and fixing component 50 is disposed on the mounting frame 42. The push and fixing component 50 is configured to push the fork located on the workbench 10 to a target position that abuts against the back plate, and fix the fork after it reaches the target position. The welding execution unit 60 specifically includes a robotic arm 61 disposed on the mounting frame 42 and a welding torch 62 disposed at the execution end of the robotic arm 61, and performs welding actions after reaching the welding station. The workbench 10 is also provided with a fork position adjacent to the concave position 11. The fork position is configured to receive and guide the movement of the fork when the push and fixation assembly 50 pushes the fork, and to make the upper surface of the fork fit against the lower surface of the back plate located in the mounting position when it reaches the target position.

[0021] According to the present invention, the working logic of the welding device is as follows: First, the mounting position, jointly formed by the concave position 11 and the execution end of the baffle assembly 20, is used to quickly and accurately perform preliminary positioning of the back plate in the length direction and back direction. Subsequently, when the mounting frame 42 moves towards the mounting position under the drive of the drive mechanism 41, the pushing and fixing components 50 on it act synchronously, pushing the fork pre-placed in the fork position towards the back plate along its length direction until the upper surface of the fork is tightly attached to the lower surface of the back plate. At the same time, when the mounting frame 42 reaches the predetermined position, its structure will physically engage (e.g., abut or contact) with the elastic fixing component 30, thereby driving the elastic fixing component 30 from the initial elastic abutment state to the rigid pressing state, firmly pressing the back plate onto the mounting position. The single movement of the mounting frame 42 synchronously coordinates the pushing and fixing of the fork blades and the final locking of the back plate. This allows the back plate and the two fork blades to automatically form a precisely positioned, tightly fitted, and stable assembly before welding, eliminating the need for manual intervention and providing a reliable guarantee for subsequent high-quality welding. After welding, all components reset, and the fork blade channel is restored to unobstructed access, facilitating the smooth transfer of the welded product. Furthermore, integrating the welding execution unit 60 onto the mounting frame 42 allows the welding torch 62 to move along with the mounting frame 42 to the vicinity of the welding station. The robotic arm 61 provides flexible welding postures, capable of covering the welding needs of multiple weld seams between the back plate and the two fork blades. The mounting frame 42, acting as a mobile platform, effectively "delivers" the welding station to the user's location, reducing the workspace required for the robotic arm 61 and contributing to a more compact equipment layout.

[0022] In one embodiment, for the aforementioned baffle assembly 20, such as Figure 1 As shown, the baffle assembly 20 specifically includes a telescopic drive member 21 and a baffle member 22. The telescopic drive member 21 is located on the worktable 10; the baffle member 22 is connected to the output end of the telescopic drive member 21, and its size matches the through-hole 12. The telescopic drive member 21 is configured to drive the baffle member 22 through the through-hole 12 to form a mounting position, or to retract from the through-hole 12. Furthermore, based on the above principle, this structure can reliably switch between "present" and "absent" back support of the backplate through a simple linear telescopic movement. When the baffle member 22 extends, it forms a closed mounting position with the concave position 11 for positioning the backplate; when welding is completed and the workpiece needs to be removed, the baffle member 22 retracts, making room for the workpiece to move along its length. As a specific implementation, the telescopic drive member 21 can be a linear cylinder or a hydraulic cylinder, vertically installed below the worktable 10, with its piston rod (output end) vertically upward through the worktable 10 and connected to the baffle member 22. The baffle 22 can be a rectangular steel plate with a thickness slightly smaller than the width of the through opening 12 and a length that matches the length of the through opening 12, so as to ensure that it can pass through smoothly and effectively block the through opening 12.

[0023] In one embodiment, regarding the aforementioned elastic fixing component 30, such as Figure 2 As shown, the elastic fixing assembly 30 specifically includes an elastic pre-compression unit and a locking unit 35. The elastic pre-compression unit is located at one end of the drive and mounting platform 40 near the mounting position; the locking unit 35 is located at the other end of the elastic pre-compression unit near the mounting position. The elastic pre-compression unit is configured such that when the mounting bracket 42 is not engaged with the elastic fixing assembly 30, the locking unit 35 elastically abuts against the back plate; when the mounting bracket 42 is engaged with the elastic fixing assembly 30, the locking unit 35 is driven to rigidly press against the back plate. Furthermore, based on the above principle, this two-stage fixing structure offers unique advantages. In the initial state (before the mounting bracket 42 arrives), the locking unit 35 elastically abuts against the back plate under the action of the elastic pre-compression unit, providing initial positioning and support for the back plate, preventing it from wobbling, and allowing for a certain tolerance when placing the back plate, facilitating operation. When the mounting bracket 42 arrives and drives the assembly, it switches to rigid pressing, providing a strong locking force to resist thermal stress and deformation during welding, ensuring welding accuracy. This "soft first, hard later" fixing method balances ease of operation with welding stability.

[0024] In one embodiment, for the aforementioned driver and installation platform 40, such as Figure 1 As shown, the drive and mounting platform 40 specifically includes a drive mechanism 41 and a mounting frame 42. The drive mechanism 41 is located on the worktable 10; the mounting frame 42 is connected to the output end of the drive mechanism 41 and is driven by the drive mechanism 41 to reciprocate along the length of the worktable 10. The pushing and fixing component 50 and a welding execution unit 60 are both located on the mounting frame 42. Furthermore, based on the above principle, the pushing and fixing component 50 and the welding execution unit 60 are integrated onto the same mounting frame 42 driven by the drive mechanism 41, enabling multiple functions to be completed simultaneously in a single linear movement of the mounting frame 42: driving the elastic fixing component 30 to lock the back plate, pushing and fixing the fork knife, and transporting the welding torch 62 to the vicinity of the welding station. This highly integrated design simplifies the overall structural layout and control system of the device, and improves the coordination and timing accuracy of each execution action. As a specific implementation, the drive mechanism 41 can be a lead screw drive structure, driven by a servo motor to rotate the lead screw, thereby driving the mounting frame 42 connected to the lead screw nut to perform high-precision linear motion along a precision linear guide.

[0025] In one embodiment, regarding the aforementioned push and pinning component 50, such as Figure 1 and Figure 3As shown, the pushing and fixing component 50 specifically includes a pushing unit 51 and an adsorption unit 52. The pushing unit 51 is mounted on the mounting bracket 42 and configured to drive the fork blade to move along the fork blade position; the adsorption unit 52 is located at the end of the pushing unit 51 near the fork blade and configured to adsorb and fix the fork blade. Furthermore, combining the above principles, the pushing and fixing functions are integrated into one unit. The pushing unit 51 achieves precise position adjustment of the fork blade, and the adsorption unit 52 achieves non-contact or contact gripping and fixing, avoiding complex mechanical gripper mechanisms, resulting in a simple and reliable structure. The adsorption unit 52 can adsorb the fork blade during the pushing process to ensure stable pushing, and maintain adsorption after reaching the target position to achieve fixing, effectively preventing fork blade displacement during welding.

[0026] In one embodiment, the mounting bracket 42 is configured such that when it is driven to a predetermined position by the drive mechanism 41, the mounting bracket 42 engages with the elastic fixing component 30 and drives the elastic fixing component 30 to press against the back plate; simultaneously, the pushing and fixing component 50 pushes the fork to the target position and fixes it, so that the back plate and the fork form a stable assembly to be welded. Furthermore, based on the above principles, the event of the mounting bracket 42 moving to the predetermined position becomes the common signal triggering the final locking of the back plate and the final positioning and fixing of the fork. This means that the single power source and single motion trajectory of the drive mechanism 41, through ingenious mechanical structural linkage, synchronously coordinates multiple key positioning and fixing actions, achieving a high degree of automation and precise timing control, greatly improving the efficiency and reliability of the entire welding preparation process.

[0027] In one embodiment, for the aforementioned elastic preload unit, such as Figure 1 and Figure 2As shown, the elastic preload unit specifically includes a sliding sleeve 31, a moving rod 32, a limiting member 33, and an elastic member 34. The sliding sleeve 31 is fixedly mounted on the frame of the drive and mounting platform 40; the moving rod 32 slides through the sliding sleeve 31; the limiting member 33 is located at the end of the moving rod 32 away from the mounting position; the elastic member 34 is sleeved on the moving rod 32 and located between the locking unit 35 and the sliding sleeve 31. The locking unit 35 is fixed to the end of the moving rod 32 near the mounting position; the elastic member 34 provides a preload force that causes the moving rod 32 to move the locking unit 35 toward the mounting position; the mounting frame 42 is configured to abut against the limiting member 33 or the moving rod 32 when moved to a predetermined position, thereby overcoming the preload force of the elastic member 34 and driving the locking unit 35 to rigidly press against the back plate. Furthermore, based on the above principles, this structure utilizes the sliding engagement of the sliding sleeve 31 and the moving rod 32 to provide stable guidance, and utilizes the elastic element 34 (such as a coil spring) to provide continuous elastic preload, ensuring that the locking unit 35 always tends to press against the back plate in its natural state. When the mounting bracket 42 moves over and abuts against the limiting member 33, it applies a thrust to the moving rod 32 in the opposite direction to the elastic force of the elastic element 34, thereby compressing the elastic element 34 and forcing the locking unit 35 to rigidly press against the back plate with greater force. This is a purely mechanical force transmission and amplification structure that requires no additional power source, and is responsive and reliable. As a specific implementation, the limiting member 33 can be a nut or stop fixed to the end of the moving rod 32.

[0028] In one embodiment, the aforementioned locking unit 35 is specifically an electromagnetic locking element, configured to be energized when the mounting bracket 42 drives the moving rod 32 to rigidly press the electromagnetic locking element against the back plate. Furthermore, based on the above principle, the electromagnetic locking element, when energized in a rigid pressing state, generates a strong electromagnetic attraction, firmly adhering the back plate and providing a locking force far exceeding that of purely mechanical clamping, making it particularly suitable for scenarios requiring resistance to strong welding heat deformation. In a non-rigid pressing state (such as the initial elastic abutment or reset state), the electromagnetic locking element can be de-energized or maintained with only weak current, saving energy and avoiding unnecessary magnetic interference. As a specific implementation, the electromagnetic locking element can be an electromagnet block with an embedded coil.

[0029] In one embodiment, regarding the aforementioned elastic fixing component 30, such as Figure 2As shown, the elastic fixing assembly 30 also includes a guide structure 36 disposed on the locking unit 35, which forms an inclined guide opening between the guide structure 36 and the top of the mounting position. Furthermore, based on the above principle, the guide structure 36 (e.g., symmetrically arranged inclined surfaces or plates) can enlarge the opening at the top of the mounting position, forming a funnel-shaped entrance. When the operator places the backplate into the mounting position from top to bottom, the guide opening can guide the end of the backplate. Even if the placement position is slightly off, it can slide into the correct position via the inclined surface, reducing the placement accuracy requirement and improving the convenience and fault tolerance of operation. As a specific implementation, the guide structure 36 can be two inclined plates welded or bolted to the upper and lower surfaces of the electromagnetic locking component.

[0030] In one embodiment, for the aforementioned push unit 51, such as Figure 3 As shown, the pushing unit 51 specifically includes a telescopic drive member 511 and a moving member 512. The telescopic drive member 511 is mounted on the mounting bracket 42; the moving member 512 is connected to the output end of the telescopic drive member 511. The adsorption unit 52 is located on the side of the moving member 512 near the fork; the telescopic drive member 511 is configured to drive the moving member 512 and the adsorption unit 52 to move closer to or away from the fork. Furthermore, based on the above principle, by driving the moving member 512 to make a linear movement perpendicular to the moving direction of the mounting bracket 42 through the telescopic drive member 511 (such as a cylinder), the adsorption unit 52 can perform the "grabbing" and "releasing" actions on the fork. When the fork needs to be pushed, the telescopic drive member 511 extends, causing the adsorption unit 52 to contact and adsorb the fork; when release or reset is required, the telescopic drive member 511 retracts, causing the adsorption unit 52 to disengage from the fork. Specifically, in a specific embodiment, the movable member 512 may include a movable block 513 slidably disposed on the mounting bracket 42, and support rods 514 symmetrically disposed on both sides of the movable block; the movable block 513 is connected to the telescopic end of the telescopic drive member 511, and the adsorption unit 52 is disposed on the two support rods 514.

[0031] In one embodiment, the aforementioned adsorption unit 52 is specifically an electromagnetic adsorption component, configured to: energize to adsorb the fork when the moving component 512 drives the fork to move; de-energize and release after the fork reaches the target position (to avoid obstructing the movement of the drive and mounting platform 40); and re-energize to fix the fork after the mounting bracket 42 moves to the predetermined position. Furthermore, based on the above principles, the energizing and de-energizing state of the electromagnetic adsorption component precisely matches the key nodes of the welding process. Energizing during the pushing phase ensures the fork will not slip during movement; a brief de-energization after reaching the target position allows the fork to be fully and naturally aligned with the back plate under fine-tuning, avoiding improper alignment due to magnetic pulling; and re-energizing after the mounting bracket 42 is in place and the back plate is rigidly locked, firmly adsorbing and fixing the fork to the workbench 10, providing a stable foundation for welding. This timing control optimizes positioning accuracy and fixing effect.

[0032] In one embodiment, for the aforementioned workbench 10, such as Figure 1 As shown, the workbench 10 specifically includes two grooves 13 arranged parallel to each other along its length, forming a central platform 14 between the two grooves 13, and side platforms 15 formed on the outer sides of the two grooves 13. The height of the central platform 14 is less than the height of the side platforms 15, together forming a concave position 11. A through opening 12 is opened on the central platform 14. The fork position is defined by the groove wall of the groove 13, the side wall of the central platform 14, and the execution end (blocking member 22) of the baffle assembly 20. Furthermore, based on the above principle, this one-piece molded or assembled table structure naturally forms the concave position 11 for locking the two sides of the back plate through the height difference between the central platform 14 and the side platforms 15. The structure is simple and the positioning is reliable. The fork position is formed by the side wall of the groove 13 (providing width direction limitation), the side wall of the central platform 14 (providing height reference), and the protruding baffle member 22 (providing length direction limitation) together forming a three-dimensional positioning space, ensuring that the fork can be accurately guided to the target position that fits against the back plate. As a specific implementation method, the height difference between the upper surface of the middle platform 14 and the bottom surface (or rolling surface) of the groove 13 should be basically consistent with the thickness of the fork blade, so as to achieve seamless fit between the upper surface of the fork blade and the lower surface of the back plate.

[0033] In one embodiment, for the aforementioned groove 13, a plurality of rotating rollers 16 are provided within the groove 13 along its length. Furthermore, based on the above principle, the rotating rollers 16 within the groove 13 create a low-friction rolling surface on the bottom surface of the groove 13. This brings several beneficial effects: firstly, it facilitates the easy pushing of heavy forks into the groove 13 (fork position) by operators or auxiliary equipment; secondly, after welding, the baffle 22 retracts, allowing the welded forks to slide easily along the rolling surface, greatly facilitating workpiece transfer and improving production efficiency; thirdly, it effectively reduces friction and lowers the drive load when the pushing and fixing assembly 50 pushes the forks.

[0034] It should be noted that, in some optional embodiments, the workbench 10, middle platform 14, and side platform 15 can be constructed from welded steel structures to ensure overall rigidity and stability. The width of the groove 13 can match the width of a standard fork, with a small gap to facilitate fork insertion. The rotating roller 16 can be made of bearing steel, and its surface can be hardened to increase wear resistance. The slope angle of the guide structure 36 can be between 30° and 60° to balance the guiding effect and structural dimensions. The preload of the elastic element 34 can be selected based on the weight of the back plate and the initial fixing requirements of the spring. The magnetic force of the electromagnetic locking element and the electromagnetic adsorption element should be selected based on the material (usually steel) and weight of the workpiece (back plate, fork). The lead screw drive structure can be equipped with a servo motor and photoelectric encoder to achieve closed-loop precise control of the mounting bracket 42 position. The robotic arm 61 can be a commercially available six-axis welding robot. The entire device can be controlled by a programmable logic controller (PLC) that coordinates the timing of the actions of each drive component (telescopic cylinder, servo motor, electromagnet).

[0035] The implementation process of this application includes the following steps: S1. The actuator of the control panel assembly 20 passes through the through-hole 12 to form a mounting position together with the concave position 11; S2. Place the back panel into the mounting position; S3. Place the fork knife in the fork knife position on the worktable 10; S4. Control drive and installation platform 40 drive the mounting bracket 42 to move toward the installation position until the mounting bracket 42 moves to the predetermined position and engages with the elastic fixing component 30, so that the elastic fixing component 30 presses against the back plate. S5. During the movement of the mounting bracket 42 or after it reaches the predetermined position, the control push and fixation component 50 pushes the fork to the target position and makes the upper surface of the fork fit against the lower surface of the back plate, and then fixes the fork. S6. Control the welding execution unit 60 to weld the joint between the back plate and the fork blade; S7. After welding is completed, control the push and fixation component 50 to release the fork knife, control the drive and installation platform 40 to drive the mounting bracket 42 to reset, and control the execution end of the baffle assembly 20 to exit from the through-hole 12.

[0036] Through the above steps, the initial positioning and final locking of the back plate, the automatic pushing and fitting of the fork blades, and the automatic welding and reset processes were executed sequentially, realizing efficient and high-precision automated welding of the forks of new energy forklifts.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A welding device for the production of new energy forklifts, characterized in that, include: A workbench for supporting a back plate and a fork knife to be welded, the workbench having a concave part and a through opening extending along its length, the concave part for accommodating and limiting both sides of the back plate along its length, and the through opening being opened at the concave part. A baffle assembly is disposed on the workbench and engages with the through-hole. The baffle assembly has a movable actuating end configured to selectively pass through the through-hole to form, together with the concave position, a mounting position for positioning the back of the back plate. A flexible fixing component is disposed on the worktable and adjacent to one end of the concave position; A drive and mounting platform is provided on the workbench. The drive and mounting platform includes a drive mechanism and a mounting frame driven by the drive mechanism. The mounting frame is configured to move toward or away from the mounting position under the drive of the drive mechanism, and can engage with the elastic fixing component when it moves to a predetermined position to drive the elastic fixing component to press against the back plate located in the mounting position. A push and fix component is provided on the mounting bracket, the push and fix component being configured to push the fork located on the workbench to a target position that conforms to the back plate, and fix the fork to the target position after it reaches the target position; A welding execution unit, comprising a robotic arm mounted on the mounting frame and a welding torch mounted on the execution end of the robotic arm, and performing welding actions after reaching the welding station; The workbench is also provided with a fork position adjacent to the concave position. The fork position is configured to accommodate and guide the movement of the fork when the pushing and fixing components push the fork, and to make the upper surface of the fork fit against the lower surface of the back plate located in the mounting position when it reaches the target position.

2. The welding device for producing new energy forklifts according to claim 1, characterized in that, The barrier assembly includes: A telescopic drive component is provided on the worktable; A baffle plate is connected to the output end of the telescopic drive component, and its size matches the through opening. The telescopic drive is configured to drive the baffle through the through-hole to form the mounting position, or to exit from the through-hole.

3. The welding device for producing new energy forklifts according to claim 1, characterized in that, The elastic fixing component includes: An elastic preload unit is located at one end of the drive and mounting platform near the mounting position; A locking unit is located at one end of the elastic preload unit near the mounting position; The elastic preload unit is configured to allow the locking unit to elastically abut against the back plate when the mounting bracket is not engaged with the elastic fixing component; and to drive the locking unit to rigidly press against the back plate when the mounting bracket is engaged with the elastic fixing component.

4. The welding device for producing new energy forklifts according to claim 1, characterized in that, The push and fix components include: A pushing unit, which is disposed on the mounting bracket and configured to drive the fork blade to move along the fork blade position; An adsorption unit is located at one end of the pushing unit near the fork blade and is configured to adsorb and fix the fork blade.

5. The welding device for producing new energy forklifts according to claim 3, characterized in that, The elastic preload unit includes: The sliding sleeve is fixedly installed; A movable rod that slides through the sliding sleeve; A limiting member is provided at the end of the movable rod away from the mounting position; An elastic element is sleeved on the movable rod and located between the locking unit and the sliding sleeve; The locking unit is fixed to one end of the moving rod near the mounting position; the elastic element provides a preload force that causes the moving rod to move the locking unit toward the mounting position; the mounting bracket is configured to abut against the limiting element or the moving rod when it moves to the predetermined position, so as to overcome the preload force of the elastic element and drive the locking unit to rigidly press against the back plate.

6. The welding device for producing new energy forklifts according to claim 5, characterized in that, The locking unit is an electromagnetic locking element, which is configured to be energized when the mounting bracket drives the moving rod to rigidly press the electromagnetic locking element against the back plate.

7. The welding device for producing new energy forklifts according to claim 3 or 5, characterized in that, The elastic fixing component also includes a guide structure disposed on the locking unit, wherein the guide structure forms an inclined guide opening between the top of the mounting position and the top of the mounting position.

8. The welding apparatus according to claim 4, characterized in that, The push unit includes: A telescopic drive component is provided on the mounting bracket; A movable component, which is connected to the output end of the telescopic drive component; The adsorption unit is located on the side of the moving member close to the fork; the telescopic drive is configured to drive the moving member and the adsorption unit to move closer to or away from the fork.

9. The welding device for producing new energy forklifts according to claim 8, characterized in that, The adsorption unit is an electromagnetic adsorption component, configured to: energize to adsorb the fork when the moving component drives the fork to move; de-energize to release after the fork reaches the target position; and re-energize to fix the fork after the mounting bracket moves to the predetermined position.

10. The welding device for producing new energy forklifts according to claim 1, characterized in that, The workbench includes two grooves arranged parallel to each other along its length, a central platform is formed between the two grooves, and a side platform is formed on the outer side of the two grooves. The height of the central platform is less than the height of the side platform to jointly enclose the concave position. The through opening is opened on the central platform. The fork position is defined by the groove wall, the side wall of the central platform, and the execution end of the baffle assembly.

Images