Automatic welding equipment and welding method for reinforced light steel keel components for walls

Abstract

The present invention proposes an automatic welding device and welding method for a reinforced light steel keel assembly for a wall, the device includes a bed, a welding device, a positioning device, a clamping and feeding device and a feeding bracket; the frame of the positioning device is fixed on the bed, and a downward pressure cylinder for positioning the keel downward is arranged on the frame, and the piston rod end of the downward pressure cylinder is provided with a pressure rod spanning the two keels, and the piston rod end is also connected with a positioning rod perpendicular to the keel, and when the pressure rod descends and presses on the two keels, the positioning rod is located at the connection fitting installation position between the two keels; the clamping and feeding device includes a clamping mechanism connected to the walking device. The present invention can realize the automatic batch welding of keels and connection fittings for the "reinforced light steel keel assembly" with a three-dimensional structure, and the equipment has a simple structure, stable and uniform welding quality, and high production efficiency, which is conducive to the promotion and use of wall panels for assembled buildings.

Description

Technical Field

[0001] The invention relates to welding equipment for keels used in the field of construction engineering, in particular to automatic welding equipment and a welding method for a reinforced light steel keel assembly for a wall. Background Art

[0002] In the field of prefabricated buildings in steel structure engineering, composite wall panels are needed. Light steel keels are used as skeletons in wall panels. However, the strength of using existing cold-bent thin-walled light steel keels on the market directly as skeletons is poor. There are also light steel square tube frames, but they need to be manually welded and made on the construction site, which cannot meet the standardization and large-scale production, and the quality is unstable and the construction efficiency is low. In order to meet the higher strength and earthquake resistance requirements of composite wall panels, the applicant has developed a "reinforced light steel keel assembly" as described in Chinese utility model application CN2022216747950, which includes two groove-shaped keels with two first side plates, the inner grooves of the two groove-shaped keels are opposite, and the two keels are connected into an assembly by a plurality of groove-shaped connectors with two second side plates, and the two sides of the roots of the two second side plates of the connector are provided with notches, and the two first side plates of the groove-shaped keel are inserted into the notches, and the first side plates of the groove-shaped keel are located on the inner side of the second side plate of the connector and the two plates are parallel, and the inner side surface of the second side plate of the connector is provided with a protruding butt welding contact. This "reinforced light steel keel assembly" has high strength, and the grooved connectors of several "reinforced light steel keel assemblies" are easy to connect with the through transverse through-pieces. However, this "reinforced light steel keel assembly" needs to be mass-produced. If it is made by the existing manual welding method, the production efficiency is low and the quality is unstable. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an automatic welding device and a welding method for reinforced light steel keel components for walls, which can realize batch welding of "reinforced light steel keel components" of three-dimensional structures, and the equipment has a simple structure, stable and uniform welding quality, and high production efficiency.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the present invention is:

[0005] An automatic welding device for a reinforced light steel keel assembly for a wall, comprising a bed and a welding device, wherein a positioning device, a clamping and feeding device and a feeding bracket are sequentially arranged on the bed on one side of the welding device; a frame of the positioning device is fixed on the bed, and a downward pressure cylinder for downward positioning the keel is arranged on the frame, and a pressure rod spanning two keels is arranged at the piston rod end of the downward pressure cylinder, and a positioning rod perpendicular to the keel is also connected to the piston rod end, and when the pressure rod descends and presses on the two keels, the positioning rod is located at the connection accessory installation position between the two keels;

[0006] The clamping and feeding device includes a clamping mechanism connected to the walking device, and the clamping mechanism is provided with a pair of left and right positioning blocks; the welding device includes a lower welding head and a liftable upper welding head, and the feeding bracket includes four columns forming two positioning grooves, and the rear ends of two parallel keels are respectively placed in the positioning grooves. When the pressure rod presses the keel, the connecting accessories are installed between the two keels at the positioning rod. When the pressure rod and the positioning rod move upward, the clamping and feeding device feeds the two keels forward until the connecting accessories are placed at the welding device.

[0007] By adopting the above technical solution, the structure and lifting control of the positioning device are cleverly set to realize the position positioning when installing the connection accessories and welding on the bed, and the feeding of the keel on the bed is realized by setting the clamping feeding device. The clamping feeding device includes a clamping mechanism connected to the walking device, and the clamping mechanism is provided with a pair of left and right positioning blocks. The left and right positioning blocks can also be used as guide blocks for the front ends of the two keels. The rear ends of the two keels are respectively placed in the positioning grooves of the feeding bracket to realize the positioning of the keel in the width direction of the bed, thereby realizing automatic feeding, installation of connection accessories and continuous welding; the position between the positioning rod and the welding device ensures that the spacing of each connection accessory on the same "reinforced light steel keel assembly" is equal, which easily ensures that the connection accessories of each "reinforced light steel keel assembly" in the wall panel are equal in height, and realizes the horizontal connection of each "reinforced light steel keel assembly" with a horizontal through piece. By adjusting the position between the positioning device and the welding device, the spacing between the connection accessories can be adjusted.

[0008] Furthermore, in order to ensure reliable operation and compact structure, the walking device of the clamping and feeding device includes a guide rail installed on the bed, and a screw nut pair located between the guide rails and connected to the servo motor. A slidable slide is supported on the guide rail, and the screw nut pair is connected to the slide on which the clamping mechanism is installed. The clamping mechanism moves through the screw nut pair under the drive of the servo motor.

[0009] Furthermore, in order to achieve simultaneous positioning of the keel and connecting accessories through a simple structure, the pressure rod is parallel to the positioning rod and is perpendicular to the keel. The two keels are C-shaped keels with opposite notches. When the pressure rod is lowered and pressed against the keel, the positioning rod is located between the two keels below and beside the pressure rod.

[0010] Furthermore, the stroke of the left and right positioning blocks of the clamping mechanism between the clamping and releasing states is 3-6 mm, the left and right positioning blocks are clamped on the outer side wall of the keel, and the left and right positioning blocks are connected to the clamping cylinder. The small stroke can make the left and right positioning blocks play a guiding role of the keel when in the released state, and the clamping cylinder can be set to 1 or 2, and the clamping cylinder is linked to control the clamping and unlocking of the left and right positioning blocks.

[0011] Furthermore, in order to improve the degree of automation, a mechanical arm is also arranged beside the bed, and the connecting accessories are installed by the mechanical arm, and the connecting accessories are positioned by abutting against the positioning rod.

[0012] Further, as an implementation method of automatic discharging, a discharging conveying device is provided on the bed at the other side of the welding device, and the discharging conveying device is a belt conveyor or a transmission roller.

[0013] Furthermore, the upper welding head of the welding device is connected to a welding lifting cylinder, and the lower welding head is fixed on the bed. The upper welding head is driven by the welding cylinder to achieve lifting.

[0014] Furthermore, the upper welding head is provided with left and right welding heads protruding downward, the left and right welding heads respectively correspond to one of the keels, the lower welding head is located below and opposite to the left and right welding heads, and the distance between the upper welding head, the lower welding head and the positioning rod is equal to the distance between the two connecting accessories; when the connecting accessories are sent to the welding device, the clamping mechanism retreats to the next connecting accessory installation position beside the positioning rod under the action of the walking device.

[0015] A welding method for a reinforced light steel keel assembly for a wall is also provided, comprising the following steps: (1) placing two keels horizontally and in parallel at the same height on the above-mentioned automatic welding equipment, the two keels are C-shaped keels with opposite notches, the rear ends of the two keels are respectively placed in two positioning grooves of a feed bracket, the connecting fittings are also C-shaped and have two grooves at both ends along their bending parts, the connecting fittings are installed on the two keels, the grooves are clamped on the upper and lower side walls of the keels so that the two ends of the two side walls of the connecting fittings are respectively overlapped on the upper surface and the lower surface of the keel, and the vertical bottom surface of the connecting fittings is positioned against the positioning rod; (2) the pressure rod and the positioning rod of the positioning device move upward, the clamping feed device is started to clamp the left and right outer walls of the keel and drive the keel forward until the connecting fitting is placed at the welding device; (3) the upper welding head of the welding device moves downward, the pressure rod and the positioning rod of the positioning device move downward, the welding device butt-welds the two ends of the connecting fitting to the keel, and the clamping mechanism of the clamping feed device retreats to the positioning rod.

[0016] By applying the welding method of the above-mentioned automatic welding equipment, the "reinforced light steel keel components" of the three-dimensional structure can be welded in batches, with a high degree of automation, stable and uniform welding quality, high production efficiency, and batch production in the factory.

[0017] Furthermore, in step (1) of the welding method, the connecting accessories are installed on the two keels manually or by a robotic arm.

[0018] In summary, the beneficial effects of the present invention are: for the "reinforced light steel keel assembly" of the three-dimensional structure, the automated batch welding of the keel and the connecting accessories can be realized, and the equipment structure is simple, the welding quality is stable and uniform, and the production efficiency is high, which is conducive to the promotion and use of wall panels for prefabricated buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 for Figure 1 Top view of the .

[0021] Figure 3 for Figure 1 Left view of .

[0022] Figure 4 This is a schematic structural diagram of the "reinforced light steel keel assembly" welded by the present invention.

[0023] Figure 5 A schematic diagram of the structure of the connecting accessories.

[0024] Figure 6 It is a schematic diagram of the structures of the positioning device, welding device and keel assembly.

[0025] Figure 7 Schematic diagram of the structure when positioning the connection accessories. DETAILED DESCRIPTION

[0026] The "reinforced light steel keel assembly" and connecting accessories 9 to be welded by the welding equipment of this embodiment are as follows: Figure 4 and Figure 5 As shown (see also Chinese utility model patent application number CN2022216747950), the "reinforced light steel keel assembly" includes two parallel C-shaped keels 8 with opposite notches, and the connecting fitting 9 is also C-shaped and has two grooves 91 at both ends along its bending portion. The connecting fitting 9 is installed on the two keels 8, and the grooves 91 are clamped on the upper and lower side walls of the keel 8 so that the two end portions of the two side walls of the connecting fitting 9 are overlapped on the upper surface and the lower surface of the keel 8, and the inner side surface of the side wall of the connecting fitting 9 is provided with a protruding welding contact 92.

[0027] like Figure 1-Figure 3 , Figure 6 , Figure 7 As shown, an automatic welding device for reinforced light steel keel components for walls includes a bed 1, a welding device 2 is arranged in the middle of the bed 1, a positioning device 3, a clamping feeding device 4 and a feeding bracket 5 are arranged in sequence on the bed 1 on one side of the welding device 2, and a discharge conveying device 6 is arranged on the bed 1 on the other side of the welding device 2. The discharge conveying device 6 adopts a transmission roller in this embodiment.

[0028] The frame 34 of the positioning device 3 is fixed on the bed 1 through long holes and mounting bolts, so the position of the positioning device 3 can be easily adjusted to meet the requirements of different spacing of connecting accessories. A downward pressure cylinder 31 for positioning the keel 8 downward is provided on the frame 34, and a pressure rod 32 is provided at the piston rod end of the downward pressure cylinder 31 to cross the two keels 8. The piston rod end is also connected to a positioning rod 33 perpendicular to the keel 8 through an extension rod obliquely downward. When the pressure rod 32 is lowered and pressed on the two keels 8 under the action of the downward pressure cylinder 31, the positioning rod 33 is located at the installation position of the connecting accessory 9 between the two keels 8; the position between the positioning rod 33 and the welding device 2 ensures that the spacing of each connecting accessory 9 on the same "reinforced light steel keel assembly" is equal. By cleverly setting the structure and lifting control of the positioning device 3, the installation of the connecting accessory 9 on the bed 1 and the position positioning during welding are achieved. In order to achieve simultaneous positioning of the keel 8 and the connecting accessories 9 through a simple structure, the pressure rod 32 is parallel to the positioning rod 33 and both are perpendicular to the keel 8. When the pressure rod 32 descends and presses against the keel 8, the positioning rod 33 is located between the two keels 8 below and beside the pressure rod 32.

[0029] The clamping feeding device 4 includes a clamping mechanism connected to the walking device, and the clamping mechanism is provided with a pair of left and right positioning blocks 41, 42; the left and right positioning blocks 41, 42 are clamped on the outer wall of the keel 8, and the left and right positioning blocks 41, 42 are connected to the clamping cylinder 43, and the clamping cylinder 43 can be provided with one or two, and the clamping and unlocking of the left and right positioning blocks 41, 42 are controlled by the clamping cylinder 43. Figure 2 , Figure 6 , Figure 7 As shown, the left and right positioning blocks 41, 42 in this embodiment are respectively connected to a horizontal clamping cylinder 43, and the stroke of the left and right positioning blocks 41, 42 of the clamping mechanism between the clamping and releasing states is about 5 mm. The small stroke enables the left and right positioning blocks 41, 42 to play a guiding role of the keel 8 when in the released state. Figure 6 As shown, the rear ends of the two keels 8 are respectively placed in the positioning grooves of the feed bracket 5, and the feed bracket 5 is located at the end of the bed 1. The feed bracket 5 includes four columns 51 forming two positioning grooves. The rear ends of the two parallel keels 8 are respectively placed in the positioning grooves to achieve the positioning of the keels 8 in the width direction of the bed 1. Figure 1 , Figure 2 and Figure 6As shown, the running device of the clamping and feeding device 4 includes a guide rail 45 installed on the bed 1, and a screw nut pair 46 located between the guide rails 45 and connected to the servo motor. The guide rails 45 and the screw are parallel to the keel 8. The guide rails 45 support a slidable slide 44. The screw nut pair is connected to the slide 44 installed with the clamping mechanism. The slide 44 of the clamping mechanism is driven by the servo motor and moves through the screw nut pair 46. When the pressure rod 32 presses the keel 8, the connecting accessory 9 is installed between the two keels 8 at the positioning rod 33. When the pressure rod 32 and the positioning rod 33 move upward, the clamping and feeding device 4 feeds the two keels 8 forward until the connecting accessory 9 is placed at the welding device 2, thereby realizing the automatic feeding of the keel 8 moving longitudinally on the bed 1, installing the connecting accessory 9 and continuing welding.

[0030] like Figure 1 , Figure 3 , Figure 6 , Figure 7 As shown, the welding device 2 includes a lower welding head 22 fixed on the bed 1 and an upper welding head 21 that can be raised and lowered. The upper welding head 21 is connected to a welding lifting cylinder 23 and is driven by the welding lifting cylinder 23 to achieve lifting and lowering. The upper welding head 21 is provided with left and right welding heads 211 and 212 protruding downward. The left and right welding heads 211 and 212 correspond to the keel 8 respectively. The lower welding head 22 is located below the left and right welding heads and is opposite to each other. The distance between the upper welding head 21, the lower welding head 22 and the positioning rod 33 is equal to the distance between the two connecting accessories 9. When the connecting accessories 9 are delivered to the welding device 2, the clamping mechanism retreats to the installation position of the next connecting accessory 9 beside the positioning rod 33 under the action of the walking device.

[0031] like Figure 2 and Figure 3 As shown, in order to improve the degree of automation, a mechanical arm 7 is further provided beside the bed 1 , and the connecting accessory 9 is installed by the mechanical arm 7 , and the connecting accessory 9 is positioned by abutting against the positioning rod 33 .

[0032] The welding method implemented by the above-mentioned welding device for strengthening light steel keel components for walls comprises the following steps:

[0033] (1) Place two keels 8 horizontally and in parallel at the same height on the above-mentioned automatic welding equipment. The two keels 8 are C-shaped keels 8 with opposite notches. The rear ends of the two keels 8 are respectively placed in the two positioning grooves of the feed bracket 5. The connecting fitting 9 is also C-shaped and has two grooves 91 at both ends along its bending portion. The connecting fitting 9 is installed on the two keels 8 by manual or mechanical arm 7. The grooves are stuck on the upper and lower side walls of the keel 8 so that the two end portions of the two side walls of the connecting fitting 9 are overlapped on the upper surface and the lower surface of the keel 8 respectively. The connecting fitting 9 connects the two sides. The vertical bottom surface of the wall is positioned against the positioning rod 33; (2) the pressure rod 32 and the positioning rod 33 of the positioning device 3 move upward, the clamping and feeding device 4 is started to clamp the left and right outer walls of the keel 8 and drive the keel 8 forward until the connecting accessory 9 is placed on the welding device 2; (3) the upper welding head 21 of the welding device 2 moves downward, the pressure rod 32 and the positioning rod 33 of the positioning device 3 move downward, the welding device 2 butt-welds the two ends of the connecting accessory 9 to the keel 8, and the clamping mechanism of the clamping and feeding device 4 retreats to the positioning rod 33 to install the next connecting accessory 9.

[0034] By applying the welding method of the above-mentioned automatic welding equipment, the "reinforced light steel keel components" of the three-dimensional structure can be welded in batches, with a high degree of automation, stable and uniform welding quality, high production efficiency, and batch production in the factory.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An automatic welding device for strengthening light steel keel components for walls, comprising a bed and a welding device, characterized in that: A positioning device, a clamping and feeding device and a feeding bracket are sequentially arranged on the bed on one side of the welding device; the frame of the positioning device is fixed on the bed, and a downward pressure cylinder for positioning the keel downward is arranged on the frame, and a pressure rod spanning the two keels is arranged at the piston rod end of the downward pressure cylinder, and a positioning rod perpendicular to the keel is also connected to the piston rod end, and when the pressure rod descends and presses on the two keels, the positioning rod is located at the connection accessory installation position between the two keels; The clamping and feeding device comprises a clamping mechanism connected to the walking device, and the clamping mechanism is provided with a pair of left and right positioning blocks; the welding device comprises a lower welding head and a liftable upper welding head, and the feeding bracket comprises four columns forming two positioning grooves, and the rear ends of two parallel keels are respectively placed in the positioning grooves, and when the pressure rod presses the keel, the connecting fitting is installed between the two keels at the positioning rod, and when the pressure rod and the positioning rod go up, the clamping and feeding device feeds the two keels forward until the connecting fitting is placed at the welding device; The pressure rod and the positioning rod are parallel and perpendicular to the keel, and the two keels are C-shaped keels with opposite notches. When the pressure rod is lowered and pressed against the keel, the positioning rod is located between the two keels below the pressure rod; the upper welding head of the welding device is connected to the welding lifting cylinder, and the lower welding head is fixed to the bed. The upper welding head is provided with left and right welding heads protruding downward, and the left and right welding heads correspond to one of the keels respectively. The lower welding head is located below the left and right welding heads and is opposite to each other. The distance between the upper welding head, the lower welding head and the positioning rod is equal to the distance between the two connecting accessories; When the connecting fitting is delivered to the welding device, the clamping mechanism retreats to the next connecting fitting installation position beside the positioning rod under the action of the walking device.

2. The automatic welding equipment for reinforced light steel keel components for walls as claimed in claim 1, characterized in that: The walking device of the clamping and feeding device includes a guide rail installed on the bed, and a screw nut pair located between the guide rails and connected to the servo motor. A slidable slide is supported on the guide rail, and the screw nut pair is connected to the slide on which the clamping mechanism is installed. The clamping mechanism moves through the screw nut pair under the drive of the servo motor.

3. The automatic welding equipment for reinforced light steel keel components for walls as claimed in claim 1, characterized in that: The stroke of the left and right positioning blocks of the clamping mechanism between the clamping and releasing states is 3-6 mm. The left and right positioning blocks are clamped on the outer side wall of the keel, and the left and right positioning blocks are connected to the clamping cylinder.

4. The automatic welding equipment for reinforced light steel keel components for walls as claimed in claim 1, characterized in that: A mechanical arm is also arranged beside the bed, and the connecting accessories are installed by the mechanical arm, and the connecting accessories are positioned by abutting against the positioning rod.

5. The automatic welding equipment for reinforced light steel keel components for walls as claimed in claim 1, characterized in that: On the bed at the other side of the welding device is a discharging conveying device, which is a belt conveyor or a driving roller.

6. A welding method for a reinforced light steel keel assembly for a wall, characterized in that: The method comprises the following steps: (1) placing two keels horizontally and in parallel at the same height on the automatic welding equipment described in any one of claims 1 to 5, wherein the two keels are C-shaped keels with opposite notches, and the rear ends of the two keels are respectively placed in the two positioning grooves of the feed bracket, and the connecting fittings are also C-shaped and have two grooves at both ends along their bending parts, respectively, and the connecting fittings are installed on the two keels, and the grooves are clamped on the upper and lower side walls of the keels so that the two ends of the two side walls of the connecting fittings are respectively overlapped on the upper surface and the lower surface of the keels, and the vertical bottom surface of the connecting fittings is positioned against the positioning rod; (2) the pressure rod and the positioning rod of the positioning device move upward, and the clamping feeding device is started to clamp the left and right outer walls of the keel and drive the keel forward until the connecting fitting is placed at the welding device; (3) the upper welding head of the welding device moves downward, and the pressure rod and the positioning rod of the positioning device move downward, and the welding device welds the two ends of the connecting fitting to the keel by butt welding, and the clamping mechanism of the clamping feeding device retreats to the positioning rod.

7. The welding method of the reinforced light steel keel assembly for the wall as claimed in claim 6, characterized in that: In the step (1), the connecting accessories are installed on the two keels manually or by a mechanical arm.

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