An automatic welding connection device for mechanical metal material components

Abstract

The present invention relates to the field of welding processing technology, and in particular to an automatic welding and connecting device for metal material components for machinery; it comprises a base; a support plate with an inverted L-shaped structure is fixedly installed on the upper end of the base, a welding mechanism is arranged on the horizontal section of the support plate, and a fixing mechanism is arranged on the vertical section of the support plate; the fixing mechanism provided in the present invention pushes two guide rails to approach each other through a driving part to fit with a connecting rod and to be fixed in contact with a bottom plate, and at the same time, through a pushing part, pushes the connecting rod to correct and move toward the guide rail, so as to improve the fit between the connecting rod and the guide rail and the accuracy of the fit position, thereby improving the quality of the welding process of the connecting rod and the guide rail, in addition, the connecting rod and the two guide rails are fixedly docked at the same time through a No. 2 fixing part and two No. 1 fixing parts, thereby reducing disassembly and overturning, and welding is performed simultaneously through two welding assemblies, thereby improving the efficiency of the welding process of the connecting rod and the guide rail.

Description

Technical Field

[0001] The present invention relates to the technical field of welding processing, and particularly relates to an automatic welding connection device for mechanical metal material components. Background Art

[0002] Construction machinery seats are designed for various construction machinery, aiming to provide drivers with a comfortable riding experience and a safe operating environment. They usually have a solid structure, adjustable functions, and durable materials to adapt to harsh working conditions. The seat bracket is one of the most important mechanical metal material components of construction machinery seats, responsible for providing the basic structure and support of the seat to ensure the stability and safety of the seat. Currently, the seat bracket is usually welded by two guide rails and metal connecting rods.

[0003] Currently, the welding of the existing guide rail and the connecting rod is usually carried out by first fixing and fitting a connecting rod with a guide rail through a pneumatic fixture, then welding, and after welding is completed, fixing and welding the other guide rail.

[0004] However, the following problems exist in the process of welding and processing the guide rail and the connecting rod: The end of the connecting rod is bent due to processing, placement, or transportation, and the existing fixing device does not have an additional structure for pushing and aligning the connecting rod to fit with the guide rail, which easily leads to poor fitting degree between the connecting rod and the guide rail, and inaccurate fitting position between the connecting rod and the guide rail, thereby affecting the welding quality. Secondly, fixing and welding the two guide rails in sequence will result in frequent disassembly, installation, and flipping, thus affecting the welding efficiency. Summary of the Invention

[0005] In view of the above problems, the embodiments of the present application provide an automatic welding connection device for mechanical metal material components to solve the above-mentioned technical problems.

[0006] To achieve the above object, the embodiments of the present application provide the following technical solutions: The embodiments of the present application provide an automatic welding connection device for mechanical metal material components, including a base; a support plate with an inverted L-shaped structure is fixedly installed at the upper end of the base, a welding mechanism is arranged on the horizontal section of the support plate, and a fixing mechanism is arranged on the vertical section of the support plate.

[0007] The described fixing mechanism includes a stepping motor. A stepping motor is fixedly installed at the right end of the vertical section of the support plate. The output shaft of the stepping motor rotates through the support plate and is fixedly installed with a fixing plate. An H-shaped plate is fixedly installed at the left end of the fixing plate. Two symmetrically arranged front and rear bottom plates are fixedly installed at the upper end of the right longitudinal section of the H-shaped plate. The bottom plates are of an L-shaped structure. Two first supports for limiting and supporting the longitudinal section of the connecting rod are symmetrically fixedly installed at the upper end of the left longitudinal section of the H-shaped plate in the front and rear. Two second supports for limiting and supporting the two horizontal sections of the connecting rod are symmetrically fixedly installed at the upper end of the left longitudinal section of the H-shaped plate in the front and rear. U-shaped grooves are provided at the upper ends of both the first support and the second support.

[0008] A first fixing part for fixing the guide rail and a second fixing part for fixing the connecting rod are provided on the bottom plate. A pushing part for pushing the connecting rod to fit with the guide rail is provided on the H-shaped plate. A driving part for driving the first fixing part, the second fixing part, and the pushing part is also provided on the H-shaped plate.

[0009] As a preferred solution, the first fixing part includes a pressing plate. Pressing plates are slidably installed in the front and rear directions on the upper ends of the horizontal sections of the bottom plates. Two symmetrically arranged front and rear sliding plates are slidably installed on the upper end of the H-shaped plate. A first support plate located between the two sliding plates is fixedly installed on the upper end of the H-shaped plate. A first compression spring is fixedly installed between the first support plate and the corresponding sliding plate. The opposite ends of the two sliding plates slidably penetrate the corresponding bottom plates. The opposite ends of the two pressing plates are fixedly connected to the corresponding sliding plates through a connecting plate. A downward pressing member for pressing the guide rail from bottom to top is provided on the pressing plate.

[0010] As a preferred solution, the second fixing part includes a limiting component. A limiting component is provided on the right side of each of the second supports. Each group of limiting components consists of two symmetrically arranged front and rear clamping blocks. First V-shaped grooves are provided on the opposite surfaces of the two clamping blocks in the same group. Two guide posts are symmetrically fixedly installed on the lower ends of each clamping block in the left and right directions. Waist-shaped grooves are provided at the positions on the H-shaped plate corresponding to the guide posts one by one. The lower ends of the guide posts slidably penetrate the corresponding waist-shaped grooves.

[0011] As a preferred solution, the pushing part includes an L-shaped plate. Two symmetrically arranged front and rear L-shaped plates are slidably installed on the upper end of the H-shaped plate and are located on the right side of the limiting component. Pushing blocks are fixedly installed at the opposite ends of the vertical sections of the two L-shaped plates. Second V-shaped grooves are provided on the opposite surfaces of the two pushing blocks. A second support plate located between the two L-shaped plates is fixedly installed on the upper end of the H-shaped plate. Second tension springs are fixedly installed between the second support plate and the L-shaped plate.

[0012] As a preferred solution, the welding mechanism includes a first electric push rod. The upper end of the horizontal section of the support plate is fixedly installed with a first electric push rod. The telescopic section of the first electric push rod slidably penetrates through the support plate and is fixedly installed with a receiving plate. The receiving plate is slidably installed up and down at the left end of the vertical section of the support plate. The left and right sides of the lower end of the receiving plate are slidably installed with connecting plates. The lower end of the connecting plate is fixedly installed with two symmetrically arranged welding components in the front and back. The lower end of the receiving plate is fixedly installed with a second electric push rod located on the right side of the connecting plate. The telescopic section of the second electric push rod is fixedly connected to the right end of the receiving plate.

[0013] As a preferred solution, the driving part includes a T-shaped plate. The upper end of the H-shaped plate is slidably installed with a T-shaped plate left and right. The upper end of the H-shaped plate and on the left side of the T-shaped plate is fixedly installed with a third electric push rod. The telescopic section of the third electric push rod is fixedly connected to the left end of the T-shaped plate. The upper ends of the horizontal sections of the L-shaped plates are fixedly installed with first pushing blocks. The first pushing blocks are right-angled trapezoidal structures with inclined surfaces away from the T-shaped plate and the skateboard. The upper ends of the skateboards are fixedly installed with second pushing blocks. The second pushing blocks are right-angled trapezoidal structures with inclined surfaces close to the T-shaped plate and the L-shaped plates. The longitudinal section of the T-shaped plate is fixedly installed with first inclined blocks corresponding to the first pushing blocks one by one. The transverse section of the T-shaped plate is fixedly installed with second inclined blocks corresponding to the second pushing blocks one by one. The first inclined blocks and the second inclined blocks are both right-angled trapezoidal structures. The T-shaped plate is provided with a locking component for restricting the rotation of the fixing plate and an executing component for driving the clamping block to move.

[0014] As a preferred solution, the pressing part includes movable grooves. The upper end of the pressing plate is symmetrically provided with two movable grooves left and right. A rotating shaft is rotatably installed on the pressing plate, and the rotating shaft penetrates through the two movable grooves. Fixed blocks are fixedly installed at positions corresponding to the movable grooves on the rotating shaft. The end of the fixed block away from the corresponding pressing plate is fixedly installed with an inverted U-shaped plate. The lower part of the horizontal section of the inverted U-shaped plate and the lower parts of the two vertical sections are fixedly installed with lower pressing plates through second compression springs. The upper ends of the lower pressing plates are fixedly installed with columns slidably penetrating through the inverted U-shaped plate. The pressing plate is provided with a rotating component for driving the rotating shaft to rotate.

[0015] As a preferred solution, the rotating component includes T-shaped columns. The opposite ends of the two pressing plates are symmetrically provided with two T-shaped columns left and right. The horizontal sections of the two T-shaped columns on the same pressing plate slidably penetrate through the corresponding pressing plate and are jointly fixedly installed with a resisting plate. A first pulling spring is fixedly installed between the vertical section of the T-shaped column and the corresponding pressing plate. A notch is opened at the position of the pressing plate corresponding to the resisting plate. A spur gear located in the notch is fixedly installed on the rotating shaft. A rack is meshed with the lower part of the spur gear, and the rack is fixedly connected to the corresponding resisting plate.

[0016] As a preferred embodiment, the actuator includes a rectangular plate, a rectangular plate is fixedly installed at the lower end of the T-plate, a sliding groove is opened on the H-plate at a position corresponding to the rectangular plate, the rectangular plate slides through the sliding groove, and a driving plate located on the left side of the rectangular plate is slidably installed at the lower end of the H-plate, a No. 3 tension spring is fixedly installed between the right end of the driving plate and the left end of the rectangular plate, and an oblique groove is opened at a position corresponding to the drive plate and the guide column. The oblique groove combination that is opposite to each other and cooperates with the two guide columns on the same clamping block presents an eight-shaped structure with the left side small and the right side large.

[0017] As a preferred solution, the locking assembly includes a limiting column, and the limiting column is symmetrically fixedly installed on the right end of the transverse section of the T-shaped plate, and the right end of the limiting column slides through the fixed plate and the support plate.

[0018] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0019] 1. The fixing mechanism provided in the present invention pushes the two guide rails toward each other through the driving part so as to fit with the connecting rod and be fixed in contact with the bottom plate. At the same time, the connecting rod is pushed to correct and move toward the guide rail through the pushing part to improve the fit between the connecting rod and the guide rail and the accuracy of the fitting position, thereby improving the quality of the welding process of the connecting rod and the guide rail. In addition, the connecting rod and the two guide rails are fixed and docked at the same time through the No. 2 fixing part and the two No. 1 fixing parts respectively, thereby reducing disassembly and flipping, and welding is performed simultaneously through two welding assemblies, thereby improving the efficiency of the welding process of the connecting rod and the guide rail.

[0020] 2. The pushing portion provided in the present invention pushes the connecting rod toward the slide rail through the pushing block to improve the fit between the connecting rod and the slide rail, and the connecting rod is squeezed and corrected through the No. 2 V-groove on the pushing block, and the No. 1 fixing portion pushes the slide rail to contact the vertical section of the bottom plate to fix the slide rail, and at the same time, the slide rail is squeezed downward by the pressing piece to improve the parallelism of the slide rail, thereby ensuring the accuracy of the docking position between the connecting rod and the slide rail.

[0021] 3. The No. 1 support and the No. 2 support provided in the present invention pre-limit the connecting rod through a U-shaped groove, and then squeeze and fix it through a clamping block, and fix the two guide rails through two No. 2 fixing parts and connect them with the connecting rod. Then, the fitting parts of the two guide rails and the connecting rod are welded respectively through two welding assemblies. After welding one side, the fixed connecting rod and guide rail are turned over by a stepper motor to weld the other side, thereby reducing the number of disassembly and flipping times of the guide rail and connecting rod welding process, thereby improving the efficiency of the guide rail and connecting rod welding process.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0024] Figure 1 Schematic three-dimensional structure diagram of the present application.

[0025] Figure 2 For Figure 1 Schematic structure diagram after hiding the connecting rod and the guide rail.

[0026] Figure 3 Schematic structure diagram of the welding mechanism of the present application.

[0027] Figure 4 Schematic structure diagram of the pushing part of the present application.

[0028] Figure 5 For Figure 4 Enlarged view of the structure at position A in

[0029] Figure 6 Schematic structure diagram of the actuator of the present application.

[0030] Figure 7 Schematic structure diagram of the driving part of the present application.

[0031] Reference numerals: 10, base; 11, support plate; 2, fixing mechanism; 20, stepping motor; 21, fixing plate; 22, H-shaped plate; 23, bottom plate; 24, first support; 25, second support; 26, first fixing part; 260, extrusion plate; 261, sliding plate; 262, first compression spring; 263, connecting plate; 4, pressing part; 40, rotating shaft; 41, fixing block; 42, inverted U-shaped plate; 43, lower pressing plate; 44, second compression spring; 5, rotating part; 50, T-shaped column; 51, abutting plate; 52, first pulling spring; 53, spur gear; 54, rack; 27, second fixing part; 270, clamping block; 271, guide post; 28, pushing part; 280, L-shaped plate; 281, pushing block; 282, second pulling spring; 29, driving part; 290, T-shaped plate; 291, third electric push rod; 292, first pushing block; 293, second pushing block; 294, first inclined block; 295, second inclined block; 296, limiting post; 6, actuator; 60, rectangular plate; 61, driving plate; 62, third pulling spring; 63, inclined groove; 3, welding mechanism; 30, first electric push rod; 31, receiving plate; 32, connecting plate; 33, welding assembly; 34, second electric push rod. Detailed implementation manners

[0032] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] As Figure 1 shown, an automatic welding connection device for a mechanical metal material component includes a base 10; a support plate 11 having an inverted L-shaped structure is fixedly installed at the upper end of the base 10, a welding mechanism 3 is arranged on the horizontal section of the support plate 11, and a fixing mechanism 2 is arranged on the vertical section of the support plate 11.

[0034] As Figure 1 、 Figure 2 and Figure 4 shown, the fixing mechanism 2 includes a stepping motor 20. The stepping motor 20 is fixedly installed at the right end of the vertical section of the support plate 11. The output shaft of the stepping motor 20 rotates through the support plate 11 and is fixedly installed with a fixing plate 21. The left end of the fixing plate 21 is fixedly installed with an H-shaped plate 22. Two symmetrically arranged front and rear bottom plates 23 are fixedly installed at the upper end of the right longitudinal section of the H-shaped plate 22. The bottom plates 23 have an L-shaped structure. Two first supports 24 for limiting and supporting the longitudinal sections of the connecting rod are symmetrically fixedly installed at the upper end of the left longitudinal section of the H-shaped plate 22. Two second supports 25 for limiting and supporting the two horizontal sections of the connecting rod are symmetrically fixedly installed at the upper end of the left longitudinal section of the H-shaped plate 22. U-shaped grooves are provided at the upper ends of the first supports 24 and the second supports 25.

[0035] As Figure 1 and Figure 2 shown, a first fixing portion 26 for fixing the guide rail and a second fixing portion 27 for fixing the connecting rod are arranged on the bottom plate 23. A pushing portion 28 for pushing the connecting rod to fit with the guide rail is arranged on the H-shaped plate 22. A driving portion 29 for driving the first fixing portion 26, the second fixing portion 27, and the pushing portion 28 is also arranged on the H-shaped plate 22.

[0036] During specific operation, manually place the two guide rails on the upper end surfaces of the horizontal sections of the two bottom plates 23 respectively, and push the right end of the guide rail against the left end of the fixed plate 21. Then place the connecting rod on the first support 24 and the second support 25, and pre-limit the connecting rod through the U-shaped grooves on the first support 24 and the second support 25. Then, the driving part 29 drives the first fixing part 26 to squeeze and fix the guide rail, and squeezes and fixes the connecting rod through the second fixing part 27. At the same time, the pushing part 28 pushes the connecting rod to correct and fit with the guide rail, thereby improving the fitting degree between the connecting rod and the guide rail, and further improving the quality after welding the guide rail and the connecting rod.

[0037] After that, the welding mechanism 3 moves down to weld the joint between the connecting rod and the guide rail. After welding is completed, the welding mechanism 3 moves up and away from the guide rail and the connecting rod. Then, the stepping motor 20 drives the fixed plate 21, the H-shaped plate 22, and the fixed connecting rod and guide rail to rotate 180 degrees. Then, the welding mechanism 3 moves down again to weld the other side of the joint between the connecting rod and the guide rail. After the two welds are completed, the stepping motor 20 drives the fixed plate 21, the H-shaped plate 22, and the fixed connecting rod and guide rail to rotate 180 degrees to reset. Then, the second fixing part 27 and the pushing part 28 release the limit extrusion on the connecting rod, and the first fixing part 26 releases the fixation on the guide rail. Then, replace the guide rail and the connecting rod, and repeat the above operations to continue the welding process of the guide rail and the connecting rod.

[0038] As Figure 2 、 Figure 4 and Figure 5 shown, the first fixing part 26 includes a pressing plate 260. The pressing plates 260 are slidably installed back and forth on the upper ends of the horizontal sections of the bottom plates 23. Two symmetrically arranged sliding plates 261 are slidably installed back and forth on the upper end of the H-shaped plate 22. A first support plate is fixedly installed on the upper end of the H-shaped plate 22 between the two sliding plates 261. A first compression spring 262 is fixedly installed between the first support plate and the corresponding sliding plate 261. The opposite ends of the two sliding plates 261 slidably penetrate the corresponding bottom plates 23. The opposite ends of the two pressing plates 260 are fixedly connected to the corresponding sliding plates 261 through a connecting plate 263. A downward pressing member 4 for pressing the guide rail from bottom to top is provided on the pressing plate 260.

[0039] As Figure 2 、 Figure 4 and Figure 6 shown, the second fixing part 27 includes a limiting component. A limiting component is provided on the right side of each of the second supports 25. Each group of limiting components consists of two symmetrically arranged clamping blocks 270. A first V-shaped groove is formed on the opposite surfaces of the two clamping blocks 270 in the same group. Two guide posts 271 are symmetrically fixedly installed on the lower ends of each clamping block 270. Waist-shaped grooves are formed at the positions corresponding to the guide posts 271 on the H-shaped plate 22. The lower ends of the guide posts 271 slidably penetrate the corresponding waist-shaped grooves.

[0040] As Figure 2 and Figure 3 shown, the pushing part 28 includes an L-shaped plate 280. Two L-shaped plates 280 that are symmetric front and back and located on the right side of the limiting component are slidably installed at the front and back of the upper end of the H-shaped plate 22. Pushing blocks 281 are fixedly installed at the opposite ends of the vertical sections of the two L-shaped plates 280. Second V-shaped grooves are formed on the opposite surfaces of the two pushing blocks 281. A second support plate located between the two L-shaped plates 280 is fixedly installed at the upper end of the H-shaped plate 22. Second tension springs 282 are fixedly installed between the second support plate and the L-shaped plates 280.

[0041] As Figure 2 、 Figure 4 and Figure 7 shown, the driving part 29 includes a T-shaped plate 290. The T-shaped plate 290 is slidably installed left and right at the upper end of the H-shaped plate 22. A third electric push rod 291 is fixedly installed at the upper end of the H-shaped plate 22 and on the left side of the T-shaped plate 290. The telescopic section of the third electric push rod 291 is fixedly connected to the left end of the T-shaped plate 290. First pushing blocks 292 are fixedly installed at the upper ends of the horizontal sections of the L-shaped plates 280. The first pushing blocks 292 are in the shape of a right trapezoid with an inclined surface away from the T-shaped plate 290 and the sliding plate 261. Second pushing blocks 293 are fixedly installed at the upper ends of the sliding plates 261. The second pushing blocks 281 are in the shape of a right trapezoid with an inclined surface close to the T-shaped plate 290 and the L-shaped plates 280. First inclined blocks 294 that are in one-to-one correspondence and cooperation with the first pushing blocks 292 are fixedly installed on the longitudinal section of the T-shaped plate 290. Second inclined blocks 295 that are in one-to-one correspondence and cooperation with the second pushing blocks 293 are fixedly installed on the transverse section of the T-shaped plate 290. Both the first inclined blocks 294 and the second inclined blocks 295 are in the shape of a right trapezoid. A locking component for restricting the rotation of the fixing plate 21 and an actuator 6 for driving the movement of the clamping block 270 are provided on the T-shaped plate 290.

[0042] As Figure 2 、 Figure 4 and Figure 6 shown, the actuator 6 includes a rectangular plate 60. The rectangular plate 60 is fixedly installed at the lower end of the T-shaped plate 290. A chute is formed at the position corresponding to the rectangular plate 60 on the H-shaped plate 22. The rectangular plate 60 slidably penetrates through the chute. A driving plate 61 is slidably installed left and right at the lower end of the H-shaped plate 22 and on the left side of the rectangular plate 60. A third tension spring 62 is fixedly installed between the right end of the driving plate 61 and the left end of the rectangular plate 60. Oblique slots 63 are formed at the positions corresponding to the guide posts 271 on the driving plate 61. The combination of the oblique slots 63 that are opposite front and back and cooperate with the two guide posts 271 on the same clamping block 270 is in the shape of an eight-character with a smaller left side and a larger right side.

[0043] During specific operation, the No. 3 electric push rod 291 pushes the T-shaped plate 290 to move rightward. The T-shaped plate 290 abuts against the No. 2 push block 293 through the No. 2 inclined block 295, so as to push the two sliding plates 261 closer to each other and compress the No. 1 compression spring 262. The sliding plates 261 drive the corresponding extrusion plates 260 to extrude the corresponding guide rails through the connecting plates 263, making the guide rails abut against the vertical sections of the corresponding bottom plates 23, and limiting the guide rails through the extrusion of the extrusion plates 260. During the movement of the extrusion plates 260, the pressing parts 4 are also driven to extrude the guide rails from bottom to top to ensure the parallelism of the guide rails, thereby improving the welding precision. During the movement of the T-shaped plate 290, the driving plate 61 is also pulled to move rightward through the rectangular plate 60 and the No. 3 tension spring 62. The driving plate 61 drives the two clamping blocks 270 of the same group to approach each other through the cooperation of the inclined groove 63 and the guide post 271 to clamp and fix the connecting rod. At the same time, the No. 1 inclined block 294 pushes the No. 1 push block 292, making the two L-shaped plates 280 move away from each other and stretch the No. 2 tension spring 282. The L-shaped plates 280 drive the corresponding pushing blocks 281 to push the connecting rod to ensure the fitting degree between the connecting rod and the guide rail. In addition, the No. 2 V-shaped groove on the pushing block 281 can extrude and correct the connecting rod to further ensure the welding strength and quality between the connecting rod and the guide rail. Then, the No. 3 electric push rod 291 pushes the T-shaped plate 290 to move further rightward, so that the locking assembly cooperates with the support plate 11 to improve the stability of the H-shaped plate 22.

[0044] After welding is completed, the No. 3 electric push rod 291 pulls the T-shaped plate 290 to move leftward. The No. 1 inclined block 294 moves away from the No. 1 push block 292, and the No. 2 inclined block 295 moves away from the No. 2 push block 293. The driving plate 61 moves leftward under the action of the No. 3 tension spring 62, thus releasing the fixation of the guide rail and the connecting rod, and then the welded connecting rod and guide rail can be removed.

[0045] As Figure 4 and Figure 5 shown, the pressing part 4 includes an activity groove. Two activity grooves are symmetrically arranged at the left and right of the upper end of the extrusion plate 260. A rotating shaft 40 is rotatably installed on the extrusion plate 260, and the rotating shaft 40 penetrates through the two activity grooves. Fixing blocks 41 are fixedly installed at positions corresponding to the activity grooves on the rotating shaft 40. An inverted U-shaped plate 42 is fixedly installed at one end of the fixing block 41 away from the corresponding extrusion plate 260. Lower pressing plates 43 are fixedly installed below the horizontal section and below the two vertical sections of the inverted U-shaped plate 42 through No. 2 compression springs 44. Columns that slide through the inverted U-shaped plate 42 are fixedly installed at the upper ends of the lower pressing plates 43. A rotating part 5 for driving the rotating shaft 40 to rotate is arranged on the extrusion plate 260.

[0046] As Figure 4 and Figure 5As shown, the rotating member 5 includes a T-shaped column 50. Two T-shaped columns 50 are symmetrically arranged on the opposite ends of the two pressing plates 260 in the left-right direction. After the horizontal sections of the two T-shaped columns 50 on the same pressing plate 260 slide through the corresponding pressing plate 260, a pressing plate 51 is fixedly installed together. A first tension spring 52 is fixedly installed between the vertical section of the T-shaped column 50 and the corresponding pressing plate 260. A notch is formed at the position corresponding to the upper end of the pressing plate 260 and the pressing plate 51. A spur gear 53 located in the notch is fixedly installed on the rotating shaft 40. A rack 54 is engaged below the spur gear 53, and the rack 54 is fixedly connected to the corresponding pressing plate 51.

[0047] During specific operation, when the pressing plate 260 moves towards the guide rail and squeezes the guide rail to fit with the vertical section of the bottom plate 23, since the guide rail fits with the vertical section of the bottom plate 23, the further movement of the guide rail is restricted. Thus, as the pressing plate 260 moves, it will squeeze the pressing plate 51 to move towards the spur gear 53 and stretch the first tension spring 52. The bottom plate 23 drives the rotating shaft 40 to rotate through the meshing of the rack 54 and the spur gear 53. The rotating shaft 40 drives the inverted U-shaped plate 42 to rotate towards the guide rail through the fixing block 41, so as to squeeze and fix the moving part and the fixing part of the guide rail through the lower pressing plate 43, ensuring the stability of subsequent welding and rotation, as well as the parallelism of the guide rail.

[0048] When the pressing plate 260 moves away from the guide rail to release the fixation of the guide rail, under the action of the first tension spring 52, it will push the pressing plate 51 to move away from the corresponding pressing plate 260. The pressing plate 51 drives the rotating shaft 40 to reverse rotate through the cooperation of the rack 54 and the spur gear 53, so that the lower pressing plate 43 rotates away from the guide rail, facilitating the picking and placing of the guide rail.

[0049] As Figure 2 and Figure 3 shown, the welding mechanism 3 includes a first electric push rod 30. The first electric push rod 30 is fixedly installed at the upper end of the horizontal section of the support plate 11. The telescopic section of the first electric push rod 30 slides through the support plate 11 and is fixedly installed with a receiving plate 31. The receiving plate 31 is slidably installed up and down at the left end of the vertical section of the support plate 11. The lower end of the receiving plate 31 is slidably installed left and right with a connecting plate 32. Two welding components 33 that are symmetrically arranged front and back are fixedly installed at the lower end of the connecting plate 32. A second electric push rod 34 located on the right side of the connecting plate 32 is fixedly installed at the lower end of the receiving plate 31. The telescopic section of the second electric push rod 34 is fixedly connected to the right end of the receiving plate 31.

[0050] As Figure 2 and Figure 7 shown, the locking component includes a limiting post 296. The limiting posts 296 are symmetrically fixedly installed at the right end of the transverse section of the T-shaped plate 290 in the front-back direction. The right ends of the limiting posts 296 slide through the fixing plate 21 and the support plate 11.

[0051] During specific operation, after the connecting rod and the guide rail are fixed, the first electric push rod 30 pushes the receiving plate 31 downward. The receiving plate 31 then drives the welding assembly 33 to move towards the joint of the connecting rod and the guide rail. When it moves to the effective distance required for welding, the second electric push rod 34 drives the two welding assemblies 33 to move left and right through the connecting plate 32 to weld the joint of the connecting rod and the guide rail. After welding is completed, the first electric push rod 30 pulls the welding mechanism 3 upward to reset. Then, the third electric push rod 291 pulls the T-shaped plate 290 to move leftward by a certain distance until the limit post 296 disengages from the support plate 11, while the first fixing part 26 and the second fixing and pushing part 28 keep limiting the connecting rod and the guide rail. Then, the stepping motor 20 drives the fixing plate 21, the H-shaped plate 22, and the fixed connecting rod and guide rail to rotate 180 degrees. After that, the third electric push rod 291 pushes the T-shaped plate 290 to move rightward to return to its original position. The T-shaped plate 290 then drives the limit post 296 to insert into the support plate 11 to further limit the movement of the fixing plate 21, thereby further improving the welding stability of the connecting rod and the guide rail. Then, the welding mechanism 3 moves downward again to perform welding processing on the joint of the rotated connecting rod and the guide rail.

[0052] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanations, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0053] In addition, the terms "first", "second", "first number", "second number" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "first number", "second number" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0054] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0055] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. An automatic welding connection device for mechanical metal material components, comprising a base; characterized in that: A support plate with an inverted L-shaped structure is fixedly installed at the upper end of the base. A welding mechanism is provided on the horizontal section of the support plate, and a fixing mechanism is provided on the vertical section of the support plate. Among them: The fixing mechanism includes a stepping motor. A stepping motor is fixedly installed at the right end of the vertical section of the support plate. The output shaft of the stepping motor rotates through the support plate and then a fixing plate is fixedly installed. An H-shaped plate is fixedly installed at the left end of the fixing plate. Two symmetrically arranged front and rear bottom plates are fixedly installed at the upper end of the right longitudinal section of the H-shaped plate. The bottom plates have an L-shaped structure. Two first supports for limiting and supporting the longitudinal section of the connecting rod are symmetrically and fixedly installed at the upper end of the left longitudinal section of the H-shaped plate. Two second supports for limiting and supporting the two horizontal sections of the connecting rod are symmetrically and fixedly installed at the upper end of the left longitudinal section of the H-shaped plate. U-shaped grooves are opened at the upper ends of both the first support and the second support. A first fixing part for fixing the guide rail and a second fixing part for fixing the connecting rod are provided on the bottom plate. A pushing part for pushing the connecting rod to fit with the guide rail is provided on the H-shaped plate. A driving part for driving the first fixing part, the second fixing part and the pushing part is also provided on the H-shaped plate. The first fixing part includes a pressing plate. Pressing plates are slidably installed at the upper ends of the horizontal sections of the bottom plates in the front and rear directions. Two symmetrically arranged front and rear sliding plates are slidably installed at the upper end of the H-shaped plate. A first support plate located between the two sliding plates is fixedly installed at the upper end of the H-shaped plate. A first compression spring is fixedly installed between the first support plate and the corresponding sliding plate. The opposite ends of the two sliding plates slide through the corresponding bottom plates. The opposite ends of the two pressing plates are fixedly connected to the corresponding sliding plates through a connecting plate. A downward pressing part for pressing the guide rail from top to bottom is provided on the pressing plate. The driving part includes a T-shaped plate. The T-shaped plate is slidably installed at the upper end of the H-shaped plate in the left and right directions. A locking component for restricting the rotation of the fixing plate is provided on the T-shaped plate. The locking component includes a limiting post. Limiting posts are symmetrically and fixedly installed at the right end of the transverse section of the T-shaped plate in the front and rear directions. The right ends of the limiting posts slide through the fixing plate and the support plate. The pushing part includes an L-shaped plate. A third electric push rod is fixedly installed at the upper end of the H-shaped plate and on the left side of the T-shaped plate. The telescopic section of the third electric push rod is fixedly connected to the left end of the T-shaped plate. First pushing blocks are fixedly installed at the upper ends of the horizontal sections of the L-shaped plate. The first pushing blocks have a right trapezoidal structure with the inclined surface away from the T-shaped plate and the sliding plate. Second pushing blocks are fixedly installed at the upper ends of the sliding plates. The second pushing blocks have a right trapezoidal structure with the inclined surface close to the T-shaped plate and the L-shaped plate. First inclined blocks corresponding to the first pushing blocks are fixedly installed on the longitudinal section of the T-shaped plate. Second inclined blocks corresponding to the second pushing blocks are fixedly installed on the transverse section of the T-shaped plate. Both the first inclined block and the second inclined block have a right trapezoidal structure. An executing part for driving the clamping block to move is provided on the T-shaped plate.

2. The automatic welding connection device for a mechanical metal material component according to claim 1, characterized in that: The second fixing part includes a limiting component. A limiting component is provided on the right side of each of the second supports. Each group of limiting components consists of two symmetrically arranged front and rear clamping blocks. First V-shaped grooves are opened on the opposite surfaces of the two clamping blocks in the same group. Two guide posts are symmetrically and fixedly installed at the lower ends of each clamping block in the left and right directions. Waist grooves are opened at the positions corresponding to the guide posts on the H-shaped plate. The lower ends of the guide posts slide through the corresponding waist grooves.

3. The automatic welding connection device for a mechanical metal material component according to claim 1, characterized in that: Two L-shaped plates that are symmetric front and back are slidably installed at the upper end of the H-shaped plate and are located on the right side of the limiting component. Pushing blocks are fixedly installed at the opposite ends of the vertical sections of the two L-shaped plates. Second V-shaped grooves are formed on the opposite surfaces of the two pushing blocks. A second support plate located between the two L-shaped plates is fixedly installed at the upper end of the H-shaped plate. Second tension springs are fixedly installed between the second support plate and the L-shaped plates.

4. An automatic welding connection device for a mechanical metal material component according to claim 1, characterized in that: The welding mechanism includes a first electric push rod. The first electric push rod is fixedly installed at the upper end of the horizontal section of the support plate. The telescopic section of the first electric push rod slidably penetrates through the support plate and is fixedly installed with a receiving plate. The receiving plate is slidably installed up and down at the left end of the vertical section of the support plate. A connecting plate is slidably installed left and right at the lower end of the receiving plate. Two welding components that are symmetric front and back are fixedly installed at the lower end of the connecting plate. A second electric push rod located on the right side of the connecting plate is fixedly installed at the lower end of the receiving plate. The telescopic section of the second electric push rod is fixedly connected to the right end of the receiving plate.

5. An automatic welding connection device for a mechanical metal material component according to claim 1, characterized in that: The pressing member includes an activity groove. Two activity grooves are symmetrically formed left and right at the upper end of the pressing plate. A rotating shaft is rotatably installed on the pressing plate, and the rotating shaft penetrates through the two activity grooves. Fixed blocks are fixedly installed at positions corresponding to the activity grooves on the rotating shaft. An inverted U-shaped plate is fixedly installed at one end of the fixed block away from the corresponding pressing plate. Lower pressing plates are fixedly installed below the horizontal section and the two vertical sections of the inverted U-shaped plate through second compression springs. Support columns that slidably penetrate through the inverted U-shaped plate are fixedly installed at the upper ends of the lower pressing plates. A rotating member for driving the rotating shaft to rotate is provided on the pressing plate.

6. The automatic welding connection device for a mechanical metal material component according to claim 5, characterized in that: The rotating member includes a T-shaped column. Two T-shaped columns are symmetrically arranged left and right at the opposite ends of the two pressing plates. The horizontal sections of the two T-shaped columns on the same pressing plate slidably penetrate through the corresponding pressing plate and are jointly fixedly installed with a resisting plate. A first tension spring is fixedly installed between the vertical section of the T-shaped column and the corresponding pressing plate. A notch is formed at the position corresponding to the resisting plate at the upper end of the pressing plate. A spur gear located in the notch is fixedly installed on the rotating shaft. A rack is meshed below the spur gear, and the rack is fixedly connected to the corresponding resisting plate.

7. An automatic welding connection device for a mechanical metal material component according to claim 1, characterized in that: The executing member includes a rectangular plate. The rectangular plate is fixedly installed at the lower end of the T-shaped plate. A sliding groove is formed at the position corresponding to the rectangular plate on the H-shaped plate. The rectangular plate slidably penetrates through the sliding groove. A driving plate located on the left side of the rectangular plate is slidably installed left and right at the lower end of the H-shaped plate. A third tension spring is fixedly installed between the right end of the driving plate and the left end of the rectangular plate. Oblique grooves are formed at the positions corresponding to the guide posts on the driving plate. The combination of the oblique grooves that are opposite front and back and cooperate with the two guide posts on the same clamping block forms a structure of an eight-character shape that is smaller on the left and larger on the right.

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