Automatic welding device for frame

Abstract

The invention relates to the technical field of frame welding, and discloses an automatic frame welding device which comprises a clamping tool, the clamping tool comprises a cross beam limiting assembly, longitudinal beam limiting assemblies and a two-way driving piece, the longitudinal beam limiting assemblies are arranged on the two sides of the cross beam limiting assembly, and the two longitudinal beam limiting assemblies are both connected with the two-way driving piece; the two-way driving part can drive the two longitudinal beam limiting assemblies to get close to or get away from the cross beam limiting assembly; the first welding mechanical arm is arranged on one side of the clamping tool in a sliding mode and can be used for welding the limited longitudinal beam and the limited cross beam; the material receiving mechanism is arranged at the bottom of the clamping tool, the material receiving mechanism comprises a material receiving plate, and the material receiving plate can be used for receiving the frame after the longitudinal beam and the cross beam are welded; and the discharging mechanism is arranged on one side of the material receiving mechanism and comprises a transplanting rod, and the transplanting rod can move towards the material receiving plate so as to transfer the vehicle frame borne by the material receiving plate. An automatic welding device for a vehicle frame can effectively solve the problem that in the prior art, discharging is troublesome after the vehicle frame is welded.

Description

Technical Field

[0001] This invention relates to the field of vehicle frame welding technology, and more specifically to an automatic vehicle frame welding device. Background Technology

[0002] The vehicle frame is typically constructed by welding two longitudinal beams and several transverse beams together. Due to the large size of the frame structure and the wide distribution of welds in a spatial manner, the welding quality directly determines the safety performance and service life of the entire vehicle.

[0003] In related technologies, to achieve comprehensive and continuous welding quality of the vehicle frame, for example, patent CN214079948U provides a vehicle frame fixture for rotary welding. This device, with its freely rotating welding frame, caters to the individual habits of welders, allowing for welding with either hand. It also avoids the inconvenience of welding angles and directions, and the production safety issues caused by difficulties in overhead welding, while significantly reducing welding defects such as under-welding and missed welds. It eliminates the need for a series of processes such as tooling and fixture positioning for multiple components, requiring only one vehicle frame fixture. The welding process does not require removing the vehicle frame from the fixture; welding can be performed directly from all directions. During the welding process, the freely adjustable welding angle of the vehicle frame makes it easier to determine the welding position, and the convenient operation for welders allows for welding in a comfortable physical state, resulting in more perfect workpiece quality.

[0004] Although the existing technical solution mentioned above achieves the effect of rotating the frame structure for welding by setting a freely rotating welding frame, the two longitudinal beams and several cross beams of the frame need to be fixed with clamps when splicing before welding. After welding, when unloading the frame, it is also necessary to release the clamps and remove the frame. Because the welded frame is not easy to move, unloading the frame after welding is quite troublesome. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an automatic frame welding device, which can effectively solve the problem that the unloading of the frame after welding is relatively troublesome in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides an automatic vehicle frame welding device, comprising: The clamping fixture includes a crossbeam limiting assembly, a longitudinal beam limiting assembly, and a bidirectional driving component. The longitudinal beam limiting assemblies are disposed on both sides of the crossbeam limiting assembly, and both longitudinal beam limiting assemblies are connected to the bidirectional driving component. The bidirectional driving component can drive the two longitudinal beam limiting assemblies to move closer to or away from the crossbeam limiting assembly. The crossbeam limiting assembly, longitudinal beam limiting assembly, and bidirectional driving component can be driven to rotate the crossbeam and longitudinal beam. The first welding robotic arm is slidably mounted on one side of the clamping fixture and can weld the longitudinal beam and the transverse beam after they are limited. A receiving mechanism is disposed at the bottom of the clamping fixture. The receiving mechanism includes a receiving plate, which can receive the frame after the longitudinal beams and cross beams have been welded. A feeding mechanism is disposed on one side of the receiving mechanism. The feeding mechanism includes a transfer rod that can move toward the receiving plate to transfer the frame supported by the receiving plate.

[0007] Furthermore, the longitudinal beam limiting assembly includes a longitudinal beam limiting shell, and a first clamping member is provided on one side of the longitudinal beam limiting shell; The first clamping member includes: The clamping block is rotatably mounted on one side of the longitudinal beam limiting shell. In the welded state, the clamping block is located at the bottom of the longitudinal beam limiting shell. The attitude adjustment block is connected to the side of the clamping block away from the longitudinal beam limiting shell; The clamping and driving component is located on one side of the longitudinal beam limiting shell. By pushing the attitude adjustment block, the clamping block is rotated to clamp the longitudinal beam placed inside the longitudinal beam limiting shell.

[0008] Furthermore, a second clamping member is provided on one side of the longitudinal beam limiting shell. In the welded state, the second clamping member is located at the top of the longitudinal beam limiting shell. The second clamping member includes: The clamping plate is located inside the longitudinal beam limiting shell; A connecting sleeve is attached to one side of the clamping plate, and the connecting sleeve extends through the longitudinal beam limiting shell. The first elastic element is sleeved on the outside of the connecting sliding sleeve, and the first elastic element is located on the outside of the longitudinal beam limiting shell; The connecting plate is connected to the side of the connecting sleeve away from the clamping plate. The connecting plate can drive the clamping plate to move to limit one side of the longitudinal beam.

[0009] Furthermore, the beam limiting assembly includes a support frame and a carriage; One side of the support frame is provided with a placement groove for placing the crossbeam; The slide is slidably mounted on one side of the support frame, and both sides of the slide are equipped with abutment plates. When the slide moves relative to the support frame, the abutment plates restrict the crossbeam in the placement groove.

[0010] Furthermore, two second sliders are fixedly provided on one side of the bidirectional driving member, and the second sliders are respectively slidably disposed on the inner side of the corresponding first toothed plate; A first guide block is provided on the side of the connecting plate near the first toothed plate, and a first guide surface is provided on one side of the first guide block; a second guide block is provided on the side of the first toothed plate near the connecting plate, and a second guide surface is provided on one side of the second guide block, and the first guide surface and the second guide surface cooperate with each other.

[0011] Furthermore, the two first gear plates mesh together with a first gear, and a second gear is coaxially fixed on one side of the first gear; A second toothed plate is connected to one side of the carriage, and the second toothed plate is engaged with one side of the second gear.

[0012] Furthermore, both ends of the receiving plate are provided with rotating plates, the receiving plate is rotatably positioned between the two rotating plates, and both ends of the receiving plate are also connected with attitude holding blocks. A lifting and shifting component is provided on one side of the rotating plate, and the rotating plate is located at the output end of the lifting and shifting component.

[0013] Furthermore, two receiving plates are provided, and the two receiving plates are respectively rotatably arranged on both sides of the rotating plate; A second driving component is provided on one side of the rotating plate, which can drive the rotating plate to rotate.

[0014] Furthermore, several receiving rods are provided on one side of the receiving plate. When receiving the vehicle frame, the several receiving rods are oriented towards the clamping fixture. Each receiving rod has a receiving groove at its top. When receiving the vehicle frame, the vehicle frame is supported at the receiving groove.

[0015] Furthermore, it also includes side welding mechanisms located on both sides of the receiving mechanism, each of which includes a second welding robotic arm and a material handling robotic arm.

[0016] The technical solution provided by this invention has the following advantages compared with the prior art: The bidirectional driving component of this invention can move the two longitudinal beam limiting components closer to or further away from the transverse beam limiting component, facilitating the adjustment of the positions of the longitudinal beams and transverse beams before welding. After welding, the longitudinal beam limiting components move away from the transverse beam limiting components, facilitating the release of the welded frame. This invention is equipped with a receiving mechanism and a unloading mechanism. After welding, the receiving mechanism can automatically rise to receive the released frame, and the unloading mechanism moves the frame out of the working area, realizing automatic unloading of the frame without the need for manual handling or the cumbersome operation of additional lifting equipment. This effectively solves the problem of cumbersome unloading of the frame after welding in the prior art. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of the clamping fixture in an embodiment of the present invention; Figure 3 This is an exploded view of the clamping fixture in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the second clamping member in an embodiment of the present invention; Figure 5 This is a schematic diagram of the assembly of the longitudinal beam limiting component, the transverse beam limiting component, and the bidirectional driving component in an embodiment of the present invention; Figure 6 for Figure 5 Enlarged structural diagram of section A in the middle; Figure 7 This is an exploded structural diagram of the carriage and support plate in an embodiment of the present invention; Figure 8 This is a schematic diagram of the material receiving mechanism in an embodiment of the present invention; Figure 9 This is a schematic diagram of the working base plate in an embodiment of the present invention.

[0019] The labels in the diagram represent: 1. Working base plate; 11. Support plate; 12. First support seat; 13. First active slide rail; 14. Second support seat; 2. Clamping fixture; 21. Longitudinal beam limiting assembly; 211. Longitudinal beam limiting shell; 2111. Receiving groove; 212. First clamping component; 2121. Clamping block; 2122. Attitude adjustment block; 2123. Clamping and driving component; 213. Second clamping component; 2131. Clamping plate; 2132. Connecting sleeve; 2133. Slide rod; 2134. First elastic component; 2135. Connecting plate; 2136. 22. First guide block; 22. Crossbeam limiting assembly; 221. Slide carriage; 2211. Bracing plate; 2212. Slide groove; 2213. Second toothed plate; 222. Bearing frame; 2221. Placement groove; 2222. First slider; 23. Bidirectional driving component; 231. Second slider; 232. First toothed plate; 2321. Second guide block; 233. First gear; 234. Second gear; 24. First driving component; 3. Receiving mechanism; 31. Receiving plate; 311. Receiving rod; 3111. Receiving groove; 312. Attitude holding block; 32. Rotating plate; 33. Third slider; 34. Lifting and moving component; 35. Second driving component; 4. Feeding mechanism; 41. Connecting seat; 42. Transplanting rod; 43. Rotary disk; 44. First slide block; 45. Second active slide rail; 5. First welding robotic arm; 51. Second slide block; 6. Side welding mechanism; 61. Second welding robotic arm; 62. Material handling robotic arm. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to embodiments.

[0022] This invention provides a technical solution: an automatic vehicle frame welding device, such as... Figure 1 As shown, the system includes a working base plate 1, a clamping fixture 2, a receiving mechanism 3, a unloading mechanism 4, a first welding robotic arm 5, and a side welding mechanism 6. The working base plate 1 is used to support the various mechanisms and components, and during operation, the working base plate 1 is fixed to a reference working surface, such as the ground. The clamping fixture 2 is rotatably mounted on the top of the working base plate 1 and is used to position and clamp the longitudinal beams and cross beams of the vehicle frame. The receiving mechanism 3 is located at the bottom of the clamping fixture 2 and is used to receive the vehicle frame after the longitudinal beams and cross beams have been welded. The unloading mechanism 4 is located on one side of the working base plate 1 and is used to remove the vehicle frame from the receiving mechanism 3. The first welding robotic arm 5 is slidably mounted on one side of the clamping fixture 2 and is used to perform welding operations on the longitudinal beams and cross beams of the vehicle frame. The side welding mechanism 6 consists of two sets, located on both sides of the receiving mechanism 3, and is used to weld the sides of the vehicle frame.

[0023] The clamping fixture 2 includes a longitudinal beam limiting assembly 21, a transverse beam limiting assembly 22, two bidirectional driving components 23, and a first driving component 24. The longitudinal beam limiting assembly 21 includes two longitudinal beam limiting shells 211 for fixing the longitudinal beam. The transverse beam limiting assembly 22 is disposed between the two longitudinal beam limiting shells 211 for fixing the transverse beam. The bidirectional driving component 23 is used to drive the two longitudinal beam limiting shells 211 to move closer to or further away from the transverse beam limiting assembly 22, and to drive the transverse beam limiting assembly 22 to clamp the transverse beam. The first driving component 24 is used to drive the longitudinal beam limiting assembly 21, the transverse beam limiting assembly 22, and the bidirectional driving component 23 to rotate.

[0024] The bidirectional drive component 23 moves the two longitudinal beam limiting shells 211 toward the transverse beam limiting assembly 22. Therefore, a power component with bidirectional linear output function, such as a bidirectional linear module or a bidirectional hydraulic rod, can be selected. The first drive component 24 rotates the longitudinal beam limiting assembly 21, the transverse beam limiting assembly 22, and the bidirectional drive component 23. Accordingly, a power component with rotational output function, such as a motor, can be selected. The specific components selected are not limited here.

[0025] In the above technical solution, before welding, the crossbeam is placed at the crossbeam limiting component 22 and restricted, and the longitudinal beam is placed at the longitudinal beam limiting component 21 and restricted. Then, the longitudinal beam inside the longitudinal beam limiting shell 211 is moved towards the crossbeam at the crossbeam limiting component 22 by the bidirectional driving component 23 to facilitate subsequent welding. After the single-sided welding is completed, the first driving component 24 drives the longitudinal beam limiting component 21, the crossbeam limiting component 22 and the bidirectional driving component 23 to rotate, so that the frame with the single-sided welding completed rotates to weld the crossbeam and longitudinal beam on the other side of the frame. After both sides are welded, the bidirectional driving component 23 drives the longitudinal beam limiting component 21 away from the crossbeam limiting component 22. At this time, the crossbeam limiting component 22 is located above the frame. Under the action of gravity, the frame is separated from the crossbeam limiting component 22 and placed on the receiving mechanism 3. Then, the frame is removed from the receiving mechanism 3 by the unloading mechanism 4, realizing the automatic unloading of the welded frame.

[0026] like Figure 2 , Figure 3 and Figure 5 As shown, a first clamping member 212 is provided at the bottom of the longitudinal beam limiting shell 211. The first clamping member 212 includes a clamping block 2121, which is rotatably disposed at the bottom of the longitudinal beam limiting shell 211. An attitude adjustment block 2122 is fixedly disposed at the bottom of the clamping block 2121. A clamping drive member 2123 is provided on one side of the attitude adjustment block 2122 for driving the clamping block 2121 to rotate to press the longitudinal beam. The clamping drive member 2123 is fixedly disposed at the bottom of the longitudinal beam limiting shell 211.

[0027] The function of the clamping and driving component 2123 in the above technical solution is to push the attitude adjustment block 2122 to make the clamping block 2121 rotate to fix the longitudinal beam. Therefore, the clamping and driving component 2123 is selected as a power component with linear output function, such as electric push rod, pneumatic push rod, hydraulic push rod or linear module, etc.

[0028] When the longitudinal beam needs to be assembled, the first drive component 24 drives the longitudinal beam limiting assembly 21 to rotate, so as to Figure 1 The position is rotated approximately 90° from the starting position to facilitate placing the longitudinal beam into the longitudinal beam limiting shell 211. At this time, under the action of gravity, the attitude adjustment block 2122 drives the clamping block 2121 to be approximately vertical, which facilitates the placement of the longitudinal beam into the longitudinal beam limiting shell 211. Subsequently, the first drive rotating component 24 rotates in the opposite direction to drive the longitudinal beam limiting shell 211 to reset. At this time, the clamping drive component 2123 on the side with the longitudinal beam pushes the attitude adjustment block 2122, causing the clamping block 2121 to rotate and press and fix the longitudinal beam in the longitudinal beam limiting shell 211. Based on the same method, the longitudinal beam on the other side is placed in another longitudinal beam limiting shell 211 and pressed and fixed, thus completing the positioning of the longitudinal beam.

[0029] To prevent the longitudinal beam from tilting or moving along the longitudinal restraint shell Figure 1 The vertical displacement is shown, as follows: Figure 3 and Figure 4 As shown, a second clamping member 213 is provided on the top of the longitudinal beam limiting shell 211. The second clamping member 213 includes two clamping plates 2131, which are respectively provided on both sides of the longitudinal beam limiting shell 211. The clamping plates 2131 are provided at the bottom of the connecting sleeve 2132. A sliding rod 2133 is fixedly provided on the top of the connecting sleeve 2132. The sliding rod 2133 is slidably provided on the inner side of the top frame. The top frame is fixedly provided on the top of the longitudinal beam limiting shell 211. A first elastic member 2134 is sleeved on the outer side of the connecting sleeve 2132. A connecting plate 2135 is fixedly provided on the top of the two connecting sleeves 2132 on the same side. The first elastic member 2134 is provided between the longitudinal beam limiting shell 211 and the connecting plate 2135. The connecting plate 2135 is driven down by external force, which causes the clamping plate 2131 to perform a limiting action on the top of the longitudinal beam.

[0030] With the above technical solution, when the longitudinal beam is placed in the longitudinal beam limiting shell, the movement of the connecting plate 2135 drives the clamping plate 2131 to move towards the longitudinal beam. Figure 1 The vertical direction shown limits the longitudinal beam to ensure the effectiveness of the longitudinal beam's limitation.

[0031] like Figure 3 , Figure 5 and Figure 7As shown, the crossbeam limiting assembly 22 includes a slide 221 and a support frame 222. The top of the support frame 222 is provided with a placement groove 2221 for placing the crossbeam. Both sides of the top of the slide 221 are fixedly provided with abutment plates 2211. The inner side of the slide 221 is provided with a sliding groove 2212. The bottom of the support frame 222 is fixedly provided with a first slider 2222 corresponding to the sliding groove 2212. The first slider 2222 is slidably disposed inside the sliding groove 2212. The slide 221 is driven by an external force to move and clamp the crossbeam.

[0032] When it is necessary to assemble the crossbeam, place the crossbeam in the placement groove 2221 at the top of the support frame 222. Then, the slide 221 moves relative to the support frame 222, so that the clamping plate 2211 clamps the crossbeam against one side wall of the placement groove 2221, thus completing the positioning of the crossbeam.

[0033] like Figures 2-7 As shown, the two output ends of the bidirectional driving component 23 are fixedly installed on one side of the two longitudinal beam limiting shells 211 respectively; the fixed part (i.e., the non-output end) at the bottom of the bidirectional driving component 23 is fixedly installed with two second sliders 231 in a staggered manner. The two second sliders 231 are slidably installed on the inner side of the two first toothed plates 232 respectively. The inner side of the first toothed plate 232 is provided with a slot that matches the second slider 231. The connecting plate 2135 is fixedly installed with a first guide block 2136 on the side near the first toothed plate 232. The first guide block 2136 is provided with a first guide surface on one side. The first guide surface is inclined. The first toothed plate 232 is fixedly installed with a second guide block 2321 on the side near the first guide block 2136. The second guide block 2321 is provided with a second guide surface on one side. The second guide surface is inclined, and the first guide surface and the second guide surface cooperate with each other.

[0034] Two first toothed plates 232 are connected to each other on one side and are meshed with a first gear 233. A second gear 234 is fixedly installed on the top of the first gear 233. The first gear 233 and the second gear 234 are rotatably mounted on the bottom of the support frame 222. A second toothed plate 2213 is fixedly installed on one side of the slide 221 and is meshed with the second gear 234.

[0035] In the above technical solution, when the bidirectional driving component 23 drives the longitudinal beam limiting shells 211 on both sides to move towards the crossbeam limiting assembly 22, the position of the second slider 231 remains unchanged. The first guide block 2136 on one side of the connecting plate 2135 pushes the second guide block 2321, causing the first toothed plate 232 to move. The first gear 233 and the second gear 234 drive the second toothed plate 2213 to move, causing the slide 221 and the abutment plate 2211 to move to clamp and fix the crossbeam. When the first toothed plate 232 moves to the point where the second slider 231 abuts... When the first toothed plate 232 is on its side wall, it is restricted by the second slider 231 and the first toothed plate 232 no longer moves. At this time, the bidirectional drive member 23 continues to pull the longitudinal beam limiting shell 211, so that the second guide block 2321 and the first guide block 2136 cooperate to squeeze. Under the action of the first guide surface and the second guide surface, the connecting plate 2135 moves toward the longitudinal beam, so that the clamping plate 2131 moves toward the longitudinal beam to press the longitudinal beam, so as to prevent the longitudinal beam from shaking during the process of the first drive member 24 driving the frame to flip, and to ensure the welding accuracy on the other side.

[0036] like Figure 1 and Figure 8 As shown, support plates 11 are fixedly installed on both sides of the top of the working base plate 1. The receiving mechanism 3 includes two receiving plates 31. Attitude holding blocks 312 are fixedly installed on both sides of the receiving plates 31. The two receiving plates 31 are symmetrically rotated between two rotating plates 32. The rotating plates 32 are rotatably installed on one side of the third slider 33. The third slider 33 is fixedly installed at the output end of the lifting and moving component 34. The lifting and moving component 34 is fixedly installed on the top of the working base plate 1. The rotating plate 32 is driven to rotate by the second driving component 35. The second driving component 35 is fixedly installed on the outside of the support plate 11. The third slider 33 is slidably installed on the inside of the support plate 11.

[0037] Several receiving rods 311 are fixedly installed on the top of the receiving plate 31. The top of the receiving rods 311 is provided with receiving grooves 3111. The top of the longitudinal beam limiting shell 211 is provided with receiving mating grooves 2111 to cooperate with the receiving rods 311.

[0038] The function of the lifting and moving component 34 is to drive the third slider 33 and the rotating plate to slide along the support plate 11. Therefore, the lifting and moving component 34 is selected as a power component with linear output function, such as a hydraulic push rod, a pneumatic push rod, an electric push rod, or a linear module. The function of the second driving and rotating component 35 is to drive the rotating plate 32 to rotate. Therefore, the second driving and rotating component 35 is selected as a power component with rotation output function, such as a motor.

[0039] By setting the posture holding block 312, the receiving plate 31 remains horizontal during the rotation of the rotating plate 32. As the rotating plate 32 rotates, one of the receiving plates 31 is at the highest point. At this time, the receiving plate 31 is driven to rise by the lifting drive component 34, so that the receiving rod 311 is located at the bottom of the corresponding receiving groove 2111. The bidirectional drive component 23 drives the two longitudinal beam limiting shells 211 away from each other. At this time, the two first guide blocks 2136 also move away from each other. The first guide block 2136 is no longer resisted by the second guide block 2321. Under the action of the first elastic component 2134, the clamping plate 2131 moves away from the longitudinal beam. Under the action of gravity, the welded frame slides down the side wall of the clamping plate 2211 to the top of the receiving plate 31.

[0040] A better solution is, such as Figure 7 As shown, the abutting sidewall of the abutting plate 2211 (that is, the sidewall that contacts the crossbeam in the abutting state) is inclined, and its top end is inclined toward the moving direction when the abutting plate 2211 is abutting; so that when the welded frame slides down along the sidewall, the inclined sidewall drives the slide 221 to reset, thereby driving the second toothed plate 2213, the second gear 234, the first gear 233 and the first toothed plate 232 to reset in a coordinated manner, which is convenient for the next clamping.

[0041] like Figure 9 As shown, the feeding mechanism 4 includes a connecting seat 41, a transplanting rod 42 is fixedly installed on one side of the connecting seat 41, the bottom of the connecting seat 41 is rotatably mounted on the top of the first slide 44 via a rotating disk 43, the first slide 44 is slidably mounted on the inner side of the second active slide rail 45, and the second active slide rail 45 is fixedly mounted on the top of the working base plate 1 via a second support seat 14.

[0042] The welded frame is supported by the receiving groove 3111 at the top of the receiving rod 311. The transplanting rod 42 is driven by the first sliding seat 44 to move toward the welded frame, so that the transplanting rod 42 extends into the gap between the frame and the receiving plate 31. Then the receiving plate 31 descends and the frame falls on the transplanting rod 42. Then the unloading mechanism removes the welded frame, completing the automatic unloading.

[0043] The first drive component 24 is fixedly disposed on the outside of the support plate 11, and the two bidirectional drive components 23 are rotatably disposed on the outside of the corresponding support plate 11 via rotating shafts. The first drive component 24 is used to drive one of the rotating shafts to rotate. Two first support seats 12 are fixedly installed on the top of the working base plate 1 on one side of the clamping fixture 2. A first active slide rail 13 is fixedly installed between the two first support seats 12. A second slide 51 is installed at the bottom of the first welding robot arm 5. The second slide 51 is slidably installed inside the first active slide rail 13.

[0044] The side welding mechanism 6 is located on one side of the receiving plate 31. The side welding mechanism 6 includes a second welding robotic arm 61 and a material picking robotic arm 62. Both the second welding robotic arm 61 and the material picking robotic arm 62 are fixedly installed on the top of the working base plate 1.

[0045] After receiving the material, the receiving plate 31 receives the material, and the lifting drive component 34 drives the third slider 33 to descend, causing the frame to leave the area below the clamping fixture 2. Then, the second drive component 35 drives the rotating plate 32 to rotate, rotating the receiving plate 31 and the frame to one side of the working base plate 1. At this time, the picking robot arm 62 in the side welding mechanism 6 grabs the parts on both sides of the longitudinal beam and places them on the frame. The second welding robot arm 61 performs welding operations on the parts on both sides of the longitudinal beam. During this process, the two receiving plates 31 work alternately. When one side is performing side welding, the other side can prepare for receiving the material, thus improving production efficiency.

[0046] In summary, the automatic frame welding device described in the embodiments of this application, when in use: First, to facilitate loading, the first drive component 24 first drives the longitudinal beam limiting shell 211 on one side to rotate to a direction that is easy to operate, and then the longitudinal beam is installed. At this time, under the gravity of the attitude adjustment block 2122, the clamping block 2121 is driven to rotate to avoid interference with the insertion of the longitudinal beam. Then, the first drive component 24 drives the longitudinal beam limiting shell 211 to rotate in the opposite direction to reset. At this time, the output end of the clamping drive component 2123 extends and touches the attitude adjustment block 2122, pushing the attitude adjustment block 2122 to swing, thereby driving the clamping block 2121 to rotate and squeeze and fix the longitudinal beam. After fixing, the first drive component 24 rotates in the opposite direction to install another longitudinal beam. The operation is simple and convenient, and rapid positioning is achieved.

[0047] After the longitudinal beams are installed, the transverse beams are placed in several placement slots 2221 on the top of the support frame 222 to complete the pre-positioning of the transverse beams.

[0048] Subsequently, the bidirectional drive component 23 is activated, which pulls the two longitudinal beam limiting shells 211 to bring the longitudinal beams closer to the crossbeam limiting component 22. At this time, the first toothed plate 232 is pushed by the connecting plate 2135 and moves. The second slider 231 at the bottom of the bidirectional drive component 23 slides in the first toothed plate 232. The first toothed plate 232 drives the first gear 233 and the second gear 234 to rotate. The second gear 234 drives the second toothed plate 2213 that meshes with it to move, thereby driving the slide 221 to move, so that the clamping plate 2211 clamps and fixes the crossbeam.

[0049] When the second slider 231 moves to the slotted sidewall of the first toothed plate 232 and is restricted from sliding further, the bidirectional drive component 23 continues to pull the longitudinal beam limiting shell 211, so that the second guide block 2321 on the first toothed plate 232 cooperates with the first guide block 2136 on the connecting plate 2135 to squeeze, driving the connecting plate 2135 to move towards the longitudinal beam, thereby driving the clamping plate 2131 to move towards the longitudinal beam, and pressing and fixing the longitudinal beam. Since the clamping plate 2131 is elastically set at the bottom of the connecting sleeve 2132, it can compensate for the dimensional error of the longitudinal beam and ensure the clamping effect. The clamping plate 2131 effectively prevents the longitudinal beam from shaking when the first drive component 24 drives the transverse and longitudinal beams to flip and weld, thus ensuring the welding accuracy.

[0050] After clamping is completed, the first drive component 24 drives the clamping fixture 2 to rotate, and cooperates with the first welding robotic arm 5 to perform welding operations on the top and bottom of the crossbeam and longitudinal beam.

[0051] After welding the crossbeams and longitudinal beams, it is necessary to cut materials or weld the components on both sides of the longitudinal beams. At this time, the second drive component 35 drives the rotating plate 32 to rotate. The receiving plate 31 remains horizontal under the gravity balance of the attitude holding block 312. When the receiving plate 31 rotates to the highest point, the lifting drive component 34 drives the third slider 33 to rise, which in turn raises the receiving plate 31, so that the receiving rod 311 is located at the bottom of the receiving mating groove 2111. Then, the bidirectional drive component 23 drives the two longitudinal beam limiting shells 211 to move away from each other. At the same time, the clamping plate 2131 resets and releases the longitudinal beam under the elastic effect of the first elastic component 2134. Under the action of the crossbeam limiting component 22, The longitudinal beam limiting assembly 21 moves away from the welded frame to avoid interference from the longitudinal beam limiting shell on the frame's descent. As the first toothed plate 232 moves away from the first guide block 2136 along with the longitudinal beam limiting shell 211, the restriction on the connecting plate 2135 is released. The welded crossbeam and longitudinal beam press down on the clamping plate 2211 and slide down along the inclined surface of the clamping plate 2211 onto the receiving plate 31 to prevent direct impact on the material and damage. At the same time, under the pressure of the crossbeam and longitudinal beam, the slide 221 is driven to slide and reset, thereby driving the second toothed plate 2213, the second gear 234, the first gear 233 and the first toothed plate 232 to reset in linkage, preparing for the next clamping.

[0052] After receiving the material, the receiving plate 31 receives the material, and the lifting drive component 34 drives the third slider 33 to descend, causing the frame to leave the area below the clamping fixture 2. Then, the second drive component 35 drives the rotating plate 32 to rotate, rotating the receiving plate 31 and the frame to one side of the working base plate 1. At this time, the picking robot arm 62 in the side welding mechanism 6 grabs the parts on both sides of the longitudinal beam and places them on the frame. The second welding robot arm 61 performs welding operations on the parts on both sides of the longitudinal beam. During this process, the two receiving plates 31 work alternately. When one side is performing side welding, the other side can prepare for receiving the material, thus improving production efficiency.

[0053] After the side welding is completed, the receiving plate 31 rotates to the highest point and rises a certain distance. The first slide 44 moves, driving the connecting seat 41 to move, so that the transplanting rod 42 moves to the bottom of the welded frame. Then the receiving plate 31 descends, and the frame falls on the transplanting rod 42. Then the unloading mechanism 4 removes the welded frame, completing the automatic unloading.

[0054] It is worth noting that the automatic frame welding device described in this application, compared to the prior art: By setting up a receiving mechanism 3 and a discharging mechanism 4, after welding is completed, the receiving plate 31 can rise under the drive of the lifting and moving component 34 to receive the loosened frame, and the frame can be moved out of the working area by the transfer rod 42 of the discharging mechanism 4, realizing automatic unloading of the frame without manual handling, effectively solving the problem that unloading the frame after welding is relatively troublesome in the prior art.

[0055] By setting up a bidirectional driving component 23, and cooperating with the linkage mechanism of the first toothed plate 232, the first gear 233, the second gear 234 and the second toothed plate 2213, the synchronous linkage of the longitudinal beam clamping and the crossbeam clamping is realized. While driving the longitudinal beam limiting shell 211 to move the longitudinal beam closer to the center, it automatically drives the slide 221 to move and clamp the crossbeam.

[0056] After the longitudinal beam and the transverse beam are positioned and clamped, the movement of the bidirectional drive component 23, through the inclined surface cooperation of the first guide block 2136 and the second guide block 2321, automatically drives the connecting plate 2135 to descend, which in turn drives the clamping plate 2131 to descend and press against the top of the longitudinal beam. This achieves secondary positioning of the longitudinal beam, effectively preventing the longitudinal beam from shaking or falling off when the workpiece is flipped during the welding process, thus ensuring welding accuracy and safety.

[0057] By setting the first elastic element, the clamping plate 2131 has an elastic buffer function when pressing the longitudinal beam, which can compensate for the error when the longitudinal beam moves to both sides of the cross beam, and ensure that each clamping plate 2131 can fit tightly against the surface of the longitudinal beam.

[0058] By setting a clamping plate 2211 on the slide 221 of the crossbeam limiting assembly 22, the clamping sidewall of the clamping plate 2211, which is inclined, is not only used to clamp the crossbeam, but also serves as a guide surface when the material is released, so that the welded frame can slide smoothly down the clamping plate 2211 onto the receiving plate 31, avoiding damage to the frame weld or surface caused by rigid impact, and realizing flexible material release.

[0059] Through the design of the attitude holding block 312, the receiving groove 3111 and the rotating plate 32, the second drive rotating component 35 is driven to rotate and transfer, which always maintains a horizontal state, ensuring the stability of the frame during the transfer process and avoiding the risk of slippage caused by tilting.

[0060] The first drive component 24 drives the longitudinal beam limiting shell 211 to rotate, which facilitates the loading of the longitudinal beam. The design of the attitude adjustment block 2122 and the clamping block 2121 makes the installation and fixing of the longitudinal beam more convenient.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic frame welding device, characterized in that, include: The clamping fixture includes a crossbeam limiting assembly, a longitudinal beam limiting assembly, and a bidirectional driving component. The longitudinal beam limiting assemblies are disposed on both sides of the crossbeam limiting assembly, and both longitudinal beam limiting assemblies are connected to the bidirectional driving component. The bidirectional driving component can drive the two longitudinal beam limiting assemblies to move closer to or away from the crossbeam limiting assembly. The crossbeam limiting assembly, longitudinal beam limiting assembly, and bidirectional driving component can be driven to rotate the crossbeam and longitudinal beam. The first welding robotic arm is slidably mounted on one side of the clamping fixture and can weld the longitudinal beam and the transverse beam after they are limited. A receiving mechanism is disposed at the bottom of the clamping fixture. The receiving mechanism includes a receiving plate, which can receive the frame after the longitudinal beams and cross beams have been welded. A feeding mechanism is disposed on one side of the receiving mechanism. The feeding mechanism includes a transfer rod that can move toward the receiving plate to transfer the frame supported by the receiving plate.

2. The automatic chassis welding device according to claim 1, characterized in that, The longitudinal beam limiting assembly includes a longitudinal beam limiting shell, and a first clamping member is provided on one side of the longitudinal beam limiting shell; The first clamping member includes: The clamping block is rotatably mounted on one side of the longitudinal beam limiting shell. In the welded state, the clamping block is located at the bottom of the longitudinal beam limiting shell. The attitude adjustment block is connected to the side of the clamping block away from the longitudinal beam limiting shell; The clamping and driving component is located on one side of the longitudinal beam limiting shell. By pushing the attitude adjustment block, the clamping block is rotated to clamp the longitudinal beam placed inside the longitudinal beam limiting shell.

3. The automatic frame welding device according to claim 2, characterized in that, A second clamping member is provided on one side of the longitudinal beam limiting shell. In the welded state, the second clamping member is located at the top of the longitudinal beam limiting shell. The second clamping member includes: The clamping plate is located inside the longitudinal beam limiting shell; A connecting sleeve is attached to one side of the clamping plate, and the connecting sleeve extends through the longitudinal beam limiting shell. The first elastic element is sleeved on the outside of the connecting sliding sleeve, and the first elastic element is located on the outside of the longitudinal beam limiting shell; The connecting plate is connected to the side of the connecting sleeve away from the clamping plate. The connecting plate can drive the clamping plate to move to limit one side of the longitudinal beam.

4. The automatic frame welding device according to claim 3, characterized in that, The beam limiting assembly includes a support frame and a slide; One side of the support frame is provided with a placement groove for placing the crossbeam; The slide is slidably mounted on one side of the support frame, and both sides of the slide are equipped with abutment plates. When the slide moves relative to the support frame, the abutment plates restrict the crossbeam in the placement groove.

5. The automatic chassis welding device according to claim 4, characterized in that, Two second sliders are fixedly provided on one side of the bidirectional driving component, and the second sliders are respectively slidably disposed on the inner side of the corresponding first toothed plate; A first guide block is provided on the side of the connecting plate near the first toothed plate, and a first guide surface is provided on one side of the first guide block; a second guide block is provided on the side of the first toothed plate near the connecting plate, and a second guide surface is provided on one side of the second guide block, and the first guide surface and the second guide surface cooperate with each other.

6. The automatic frame welding device according to claim 5, characterized in that, The two first gear plates mesh together with a first gear, and a second gear is coaxially fixed to one side of the first gear; A second toothed plate is connected to one side of the carriage, and the second toothed plate is engaged with one side of the second gear.

7. The automatic chassis welding device according to claim 1, characterized in that, The receiving plate is provided with rotating plates at both ends, and the receiving plate is rotatably positioned between the two rotating plates. Furthermore, the receiving plate is also connected to attitude holding blocks at both ends. A lifting and shifting component is provided on one side of the rotating plate, and the rotating plate is located at the output end of the lifting and shifting component.

8. The automatic frame welding device according to claim 7, characterized in that, There are two receiving plates, which are rotatably mounted on both sides of the rotating plate. A second driving component is provided on one side of the rotating plate, which can drive the rotating plate to rotate.

9. The automatic frame welding device according to claim 7, characterized in that, The receiving plate has several receiving rods on one side. When receiving the vehicle frame, the receiving rods are oriented towards the clamping fixture. Each receiving rod has a receiving groove at its top. When receiving the vehicle frame, the vehicle frame is supported at the receiving groove.

10. The automatic frame welding device according to claim 1, characterized in that, It also includes side welding mechanisms located on both sides of the receiving mechanism, each of which includes a second welding robotic arm and a material handling robotic arm.

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