Automatic welding automatic alignment device

Abstract

The present invention belongs to the technical field of lifting equipment production tools, and specifically, relates to an automatic welding automatic alignment device, including a frame, a mobile platform is arranged above the frame, and the mobile platform is installed on both sides of the frame by rolling with rollers; an electrical box is arranged on the side of the mobile platform, and a control system is arranged in the electrical box; a bidirectional linear guide mechanism is arranged at the front end of the mobile platform, and a welding gun lifting mechanism is installed slidingly on the bidirectional linear guide mechanism, and a welding gun adjustment mechanism is connected to the welding gun lifting mechanism, and a welding gun is connected to the welding gun adjustment mechanism, and the welding gun is connected to the electric welder through a feeding pipe. The technical solution of the present invention utilizes a bidirectional linear guide mechanism, cooperates with a welding gun lifting mechanism and a welding gun adjustment mechanism to achieve the purpose of automatic welding of the welding gun, and a travel sensor is installed on the adjustment electric push rod of the welding gun adjustment mechanism, so that the welding gun adjustment mechanism can cooperate with the control system to realize automatic adjustment of the weld position along the curvature of the welded plate, which greatly improves the quality and speed of welding.

Description

Technical Field

[0001] The invention belongs to the technical field of lifting equipment production tools, and in particular relates to an automatic welding and automatic alignment device. Background Art

[0002] A bridge crane is a lifting device that is horizontally mounted above a workshop, warehouse, or material yard to lift materials. Because its two ends are located on tall concrete columns or metal brackets, it looks like a bridge. The bridge of a bridge crane runs longitudinally along the tracks laid on the elevated platforms on both sides, making full use of the space under the bridge to lift materials without being hindered by ground equipment. It is the most widely used and most numerous type of lifting machinery.

[0003] During the production process of bridge cranes, large plates need to be welded. Large plates are generally placed on welding platforms. The width of the plates ranges from 2m to 6m, and the length is often tens of meters or even hundreds of meters. The welding device adjusts the position through a lead screw. Generally, when large plates are used with automatic welding equipment, two mobile positioning devices are required to better complete the positioning of the welding equipment. However, during the welding process, some reinforcement parts or plates are not straight lines, and are often accompanied by welding with a large inclination along the length direction. If the equipment cannot automatically align, it will not only affect the welding accuracy but also damage the welding gun head. Therefore, the invention of an automatic welding automatic alignment device has become a problem to be solved. Summary of the invention

[0004] The main purpose of the present invention is to provide an automatic welding and automatic alignment device to solve the problem that the screw mechanism of the existing positioning equipment used for bridge crane welding equipment cannot be designed to be too long and is prone to deformation, affecting the positioning accuracy of the equipment. At the same time, if two mobile positioning devices use two sets of screws arranged in the same vertical plane, they are prone to mutual influence and maintenance problems.

[0005] In order to solve the above problems, the present invention provides an automatic welding and automatic alignment device, comprising a frame, two rows of supporting legs are arranged at the bottom of the frame, a plurality of supporting plates are fixed in parallel on the top of the frame, a mobile platform is arranged above the frame, the mobile platform comprises an operating table at the top, an electric welding machine and a hydraulic press are installed above the operating table, two lower beams connected by columns and arranged in parallel are arranged below the operating table, rollers are arranged on the inner sides of the lower beams, and the rollers are rotatably installed on both sides of the frame; an electrical box is arranged on the side of the mobile platform, a control system is arranged in the electrical box, a bidirectional linear guide mechanism is arranged at the front end of the mobile platform, a welding gun lifting mechanism is slidably installed on the bidirectional linear guide mechanism, a welding gun adjustment mechanism is connected to the welding gun lifting mechanism, a welding gun adjustment mechanism is connected to the welding gun, and the welding gun is connected to the electric welding machine through a feeding pipe.

[0006] Furthermore, the bidirectional linear guide mechanism includes an I-shaped machine base, the cross-section of the I-shaped machine base is an I-shape, the I-shaped machine base includes a bottom plate, a top plate and a vertical plate arranged between the bottom plate and the top plate, a left end plate and a right end plate are respectively arranged at both ends of the I-shaped machine base, and a first screw mechanism and a second screw mechanism are respectively arranged on both sides of the vertical plate, the first screw mechanism includes a first screw, one end of the first screw is connected to a first slider arranged between the bottom plate and the top plate, and the other end of the first screw is connected to the first servo motor shaft after passing through the right end plate; the second screw mechanism includes a second screw, one end of the second screw is connected to a second slider arranged between the bottom plate and the top plate, and the other end of the second screw is connected to the second servo motor shaft after passing through the left end plate; support rails are arranged above and below the bottom plate.

[0007] Furthermore, the first slider and the second slider are rectangular metal plates, and the first slider and the second slider are respectively welded between the top plate and the bottom plate, and a screw bearing hole is provided on the first slider, and a screw bearing hole is provided on the second slider; elliptical holes for fixing the first slider and the second slider are provided on both sides of the support rails on the top plate and the bottom plate, and the elliptical holes are arranged at intervals; the first slider is slidably installed on the first slide rails correspondingly arranged on the top plate and the bottom plate, and the first slider is a sideways U-shaped plate, and the outer sides of the two horizontal parts of the U-shaped plate are provided with slide grooves matching the first slide rails, and the vertical part of the U-shaped plate is provided with a screw bearing hole.

[0008] Furthermore, the second slider is slidably installed on the second slide rails correspondingly arranged on the top plate and the bottom plate, the second slider is a sideways U-shaped plate, the two horizontal parts of the U-shaped plate are provided with slide grooves matching the second slide rails on the outer sides, and the vertical part of the U-shaped plate is provided with a screw bearing hole; the first servo motor and the second servo motor are respectively fixedly installed on the outer side walls of the right end plate and the left end plate.

[0009] Furthermore, the welding gun lifting mechanism comprises a left welding gun lifting device and a right welding gun lifting device which are slidably mounted in parallel on the same side of the bidirectional linear guide mechanism.

[0010] Furthermore, the left welding gun lifting device includes a left lifting box, a left lifting cylinder is installed on the top of the left lifting box, a lifting slide is fixedly connected to the bottom of the left lifting cylinder through a cylinder push rod, and a rotating block is hinged under the lifting slide; a left support frame is fixed on the side wall of the left lifting box, and left guide slides are symmetrically arranged on the top and bottom of the left support frame, and two left guide slides are slidably installed on the support rail; a left nut block is fixed on the side wall of the left support frame, and the left nut block is installed on the first lead screw.

[0011] Furthermore, the right welding gun lifting device comprises a right lifting box, a right lifting cylinder is installed on the top of the right lifting box, a lifting slider is fixedly connected to the bottom of the right lifting cylinder through a cylinder push rod, and a rotating block is hinged under the lifting slider; a right supporting frame is fixed on the side wall of the right lifting box, and right guide sliders are symmetrically arranged on the top and bottom of the right supporting frame, and two right guide sliders are slidably installed on the supporting rail; a right nut block is fixed on the side wall of the right supporting frame, and the right nut block is installed on the second lead screw.

[0012] Furthermore, the welding gun adjustment mechanism includes two parallelly arranged welding gun frame plates, one end of the welding gun frame plates is connected by an adjustment electric push rod, a reaming hole for connecting a rotating block is provided on the welding gun frame plate close to one end of the adjustment electric push rod, a welding gun column is provided at the other end of the welding gun frame plate, the welding gun column and the plate surface of the welding gun frame plate are inclined, an L-shaped welding gun fixing seat is installed on the top of the welding gun column, a welding gun fixing block is hinged on the welding gun fixing seat, and a welding gun is installed on the welding gun fixing block.

[0013] Furthermore, the welding gun heads of the two welding guns arranged at the other ends of the two welding gun racks are close to each other, a guide plate is arranged on the welding gun rack below the welding gun column, and the distance between the two guide plates is smaller than the distance between the two welding gun heads.

[0014] Furthermore, the control system includes a controller, and the output pins of the controller are respectively provided with an adjustment electric push rod output end, a left and right lifting cylinder control output end, a first servo motor forward and reverse output end, a second servo motor forward and reverse output end and a moving platform motor control end, and a stroke sensor for adjusting the electric push rod is electrically connected to the input end of the controller.

[0015] The beneficial effects of the present invention are as follows: the technical solution of the present invention utilizes a bidirectional linear guide mechanism, cooperates with a welding gun lifting mechanism and a welding gun adjustment mechanism to achieve the purpose of automatic welding of the welding gun. At the same time, a stroke sensor is installed on the adjustment electric push rod of the welding gun adjustment mechanism, so that the welding gun adjustment mechanism can cooperate with the control system to automatically adjust the weld position along the curvature of the welded plate, greatly improving the quality and speed of welding.

[0016] In the present invention, the bidirectional linear guide mechanism completes the design of the double positioning mechanism by respectively arranging screw mechanisms on both sides of the vertical plate of the T-shaped machine base, and the tail ends of the screw mechanisms are slidably installed between the top plate and the bottom plate of the machine base through the first slider and the second slider respectively, and the first slider and the second slider are fixedly installed at the elliptical holes arranged in the bottom plate and the top plate by bolts, and the elliptical holes are arranged at multiple intervals, so that the double positioning mechanism can select different screw lengths according to needs, which greatly improves the application range of the equipment; the design of the double screw structure enables the welding equipment to adapt to plates with a wider width range, and can effectively avoid the problem of small coverage range of the single screw mechanism.

[0017] In the present invention, the nut blocks of the left lifting mechanism and the right lifting mechanism are reversely arranged on both sides of the bidirectional linear guide mechanism, so that the strokes of the left lifting mechanism and the right lifting mechanism can overlap with each other, so that the stroke of the welding gun adjustment mechanism on the bidirectional linear guide mechanism is larger, and the welding range can be covered wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the right end view mechanism of the present invention;

[0021] Figure 3 It is a schematic diagram of the combination of the frame and the mobile platform in the top view of the present invention;

[0022] Figure 4 It is a schematic diagram of the arrangement of the welding gun lifting mechanism of the present invention on the double linear guide rail mechanism;

[0023] Figure 5 It is a schematic diagram of the top view of the bidirectional linear guide mechanism of the present invention;

[0024] Figure 6 It is a front structural schematic diagram of a slider of a bidirectional linear guide mechanism of the present invention;

[0025] Figure 7 The schematic cross-sectional view of the bidirectional linear guide mechanism of the present invention without the left and right end plates, the base and the slider assembly structure

[0026] Figure 8 It is a schematic diagram of the structure of the left lifting device of the present invention cooperating with the double linear guide mechanism from the end;

[0027] Fig. 9 It is a schematic diagram of the end view of the structure of the right lifting device of the present invention cooperating with the double linear guide mechanism;

[0028] Fig.10 It is a schematic diagram of the overall structure of the welding gun adjustment mechanism of the present invention;

[0029] Fig.11 It is a block diagram of the control system of the present invention.

[0030] In the figure, 1 is a frame, 2 is a support leg, 3 is an electrical box, 4 is a lower beam, 4-1 is a mobile platform motor, 5 is a column, 6 is an operating table, 7 is an electric welder, 7-1 is a welding gun, 8 is a bidirectional linear guide mechanism, 8-1 is an I-shaped machine base, 8-2 is a first slide rail, 8-3 is a first slider, 8-4 is a slider bearing, 8-5 is a first lead screw, 8-6 is an end plate bearing, 8-7 is a first servo motor, 8-8 is a right end plate, 8-9 is a second slide rail, 8-10 is a second slider, 8-11 is the second lead screw, 8-12 is the elliptical hole, 8-13 is the left end plate, 8-14 is the second servo motor, 8-15 is the support rail, 8-16 is the lead screw bearing hole, 9 is the welding gun lifting mechanism, 9A-1 is the left lifting box, 9A-2 is the left lifting cylinder, 9A-3 is the left guide slider, 9A-4 is the left support frame, 9A-5 is the left wire mother block, 9B-1 is the left lifting box, 9B-2 is the left lifting cylinder, 9B-3 is the left guide slider, 9B-4 is the left support frame, 9B-5 is the left screw nut block, 10 is the welding gun adjustment mechanism, 10-1 is the adjustment electric push rod, 10-2 is the welding gun frame plate, 10-3 is the reaming, 10-4 is the welding gun fixing block, 10-5 is the guide plate, 10-6 is the welding gun column, 10-7 is the welding gun fixing seat, 11 is the support plate, 12 is the hydraulic press, 13 is the lifting slider, 14 is the rotating block, and 15 is the rotating shaft. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Example 1: Figure 1-Figure 3As shown, an automatic welding and automatic alignment device comprises a frame 1, the frame 1 is made of two I-shaped channel steels, a metal connecting rod is arranged between the two I-shaped channel steels, two rows of support legs 2 are arranged at the bottom of the frame 1, the support legs 2 are fixed at the bottom of the I-shaped channel steels at equal intervals, the outside of the I-shaped channel steels is used as a walking track for supporting the rollers of the mobile platform, a plurality of support plates 11 are fixed side by side at the top between the two I-shaped channel steels of the frame 1, and all the support plates 11 constitute the upper surface of the frame 1; a mobile platform 6 is arranged above the frame 1, the mobile platform comprises an operating table 6 at the top, an electric welding machine 7 and a hydraulic press 12 are installed above the operating table 6, and two parallel lower beams 4 connected by columns 5 are arranged below the operating table 6, the lower beam 4 is made of square pipes, and the lower beam 4 is connected to the upper surface of the frame 1; The frame 1 is parallel in length direction, and rollers are arranged on the inner side of the lower beam 4, and the rollers are rotatably installed on the outer side of the I-shaped channel steel on both sides of the frame 1; the rollers installed on the inner side of the lower beam are divided into driving wheels and driven wheels, and the driving wheel is connected to the mobile platform motor 4-1, and there are at least two mobile platform motors 4-1, which are respectively installed on the outer side walls of the two lower beams, and are connected to the driving wheels of the rollers through a rotating shaft; an electrical box 3 is arranged on the side of the mobile platform, and a control system is arranged in the electrical box 3; a bidirectional linear guide mechanism 8 is arranged at the front end of the mobile platform, and a welding gun lifting mechanism 9 is slidably installed on the bidirectional linear guide mechanism 8, and a welding gun adjustment mechanism 10 is connected to the welding gun lifting mechanism 9, and a welding gun 7-1 is connected to the welding gun adjustment mechanism 10, and the welding gun 7-1 is connected to the electric welding machine 7 through a feeding pipe.

[0034] Combination Figure 5-Figure 7 As shown, the bidirectional linear guide mechanism includes an I-shaped machine base 8-1, the cross section of the I-shaped machine base 8-1 is an I-shaped, the I-shaped machine base 8-1 includes a bottom plate, a top plate and a vertical plate arranged between the bottom plate and the top plate, a left end plate 8-13 and a right end plate 8-8 are respectively arranged at both ends of the I-shaped machine base 8-1, and a first screw mechanism and a second screw mechanism are respectively arranged on both sides of the vertical plate, the first screw mechanism includes a first screw 8-5, one end of the first screw 8-5 is connected to a first slider 8-3 arranged between the bottom plate and the top plate, and the other end of the first screw 8-5 passes through the right end plate 8-8 and then It is connected to the rotating shaft of the first servo motor 8-7; the second screw mechanism includes a second screw 8-11, one end of the second screw 8-11 is connected to the second slider 8-10 arranged between the bottom plate and the top plate, and the other end of the second screw 8-11 passes through the left end plate 8-13 and is connected to the rotating shaft of the second servo motor 8-14; support rails 8-15 are arranged above and below the bottom plate, the support rails 8-15 are parallel to the top plate and the bottom plate, and the length of the support rails 8-15 is consistent with the length of the top plate and the bottom plate, and the support rails 8-15 are located on the center line of the top plate and the bottom plate.

[0035] The first slider 8-3 and the second slider 8-10 are both rectangular metal plates. The first slider 8-3 and the second slider 8-10 are respectively welded between the top plate and the bottom plate of the machine base 8-1. A screw bearing hole 8-16 is provided on the first slider 8-3, and the screw bearing hole 8-16 is used to install the first screw 8-5 through the bearing 8-4; a screw bearing hole 8-16 is provided on the second slider 8-10, and the screw bearing hole 8-16 is used to install the second screw 8-11 through the bearing 8-4.

[0036] Elliptical holes 8-12 for fixing the first slider 8-3 and the second slider 8-10 are arranged on both sides of the support rails 8-15 on the top plate and the bottom plate. The elliptical holes 8-12 are arranged at intervals. Specifically, the elliptical hole 8-12 for fixing the first slider 8-3 is close to the left end plate 8-13, and the elliptical hole 8-12 for fixing the second slider 8-10 is close to the right end plate 8-8.

[0037] The first slider 8-3 is slidably mounted on the first slide rail 8-2 correspondingly arranged on the top plate and the bottom plate. The first slider 8-3 is a U-shaped plate placed sideways. The two horizontal parts of the U-shaped plate are provided with slide grooves matching the first slide rail 8-2 on the outside. The vertical part of the U-shaped plate is provided with a screw bearing hole 8-16. The second slider 8-10 is slidably mounted on the second slide rail 8-9 correspondingly arranged on the top plate and the bottom plate. The second slider 8-10 is a U-shaped plate placed sideways. The two horizontal parts of the U-shaped plate are provided with slide grooves matching the second slide rail 8-9 on the outside. The vertical part of the U-shaped plate is provided with a screw bearing hole 8-16.

[0038] The first servo motor 8-7 and the second servo motor 8-14 are fixedly mounted on the outer walls of the right end plate 8-8 and the left end plate 8-14, respectively. Specifically, the first servo motor 8-7 is mounted on the outer wall of the right end plate 8-8 and fixedly mounted on the right end plate 8-8 through a servo motor seat; the second servo motor 8-14 is mounted on the outer wall of the left end plate 8-13 and fixedly mounted on the left end plate 8-13 through a servo motor seat.

[0039] In this embodiment, combined with Figure 4 , Figure 8-Figure 9As shown, the welding gun lifting mechanism 9 includes a left welding gun lifting device and a right welding gun lifting device which are slidably mounted in parallel on the same side of the bidirectional linear guide mechanism 8 . The left welding gun lifting device includes a left lifting box 9A-1, which is made of a metal box. A left lifting cylinder 9A-2 is installed on the top of the left lifting box 9A-1. A lifting slider 13 is fixedly connected to the bottom of the left lifting cylinder 9A-2 through a cylinder push rod. A rotating block 14 is hinged under the lifting slider 13, and the lifting slider 13 is hinged to the rotating block 14 through a rotating shaft 15; a left supporting frame 9A-4 is fixed on the side wall of the left lifting box 9A-1. The left supporting frame 9A-4 is made of metal sheets bent into a rectangle and fixed by end-to-end welding. Left guide sliders 9A-3 are symmetrically arranged on the top and bottom of the left supporting frame 9A-4, and two left guide sliders 9A-3 are slidably installed on the support rail 8-15; a left screw nut block 9A-5 is fixed on the side wall of the left supporting frame 9A-4, and the left screw nut block 9A-5 is installed on the first screw 8-5.

[0040] The right welding gun lifting device comprises a right lifting box 9B-1, which is made of a metal box. A right lifting cylinder 9B-2 is installed on the top of the right lifting box 9B-1. A lifting slider 13 is fixedly connected to the bottom of the right lifting cylinder 9B-2 through a cylinder push rod. A rotating block 14 is hinged under the lifting slider 13, and the lifting slider 13 is hinged to the rotating block 14 through a rotating shaft 15; a right supporting frame 9B-4 is fixed on the side wall of the right lifting box 9B-1. The right supporting frame 9B-4 is made of metal plates bent into a rectangle and fixed by end-to-end welding. Right guide sliders 9B-3 are symmetrically arranged on the top and bottom of the right supporting frame 9B-4, and two right guide sliders 9B-3 are slidably installed on the support rail 8-15; a right nut block 9B-5 is fixed on the side wall of the right supporting frame 9B-4, and the right nut block 9B-5 is installed on the first lead screw 8-5.

[0041] In this embodiment, combined with Fig.10As shown, the welding gun adjustment mechanism 10 includes two parallel welding gun frame plates 10-2, the welding gun frame plates 10-2 are made of steel plates with a certain thickness, and are connected at one end of the welding gun frame plates 10-2 through an adjusting electric push rod 10-1. Specifically, the seat end of the adjusting electric push rod 10-1 is hinged to one end of one of the welding gun frame plates 10-2, and the push rod end of the adjusting electric push rod 10-1 is hinged to one end of the other welding gun frame plate 10-2, wherein a stroke sensor for detecting the push rod stroke of the adjusting electric push rod 10-1 is installed at the left end of the adjusting electric push rod 10-1, a reaming hole 10-3 for connecting with a rotating block is arranged on the welding gun frame plate near one end of the adjusting electric push rod 10-1, a welding gun column 10-6 is arranged at the other end of the welding gun frame plate 10-2, and the welding gun column 1 0-6 is a metal cylinder, and a round hole for installing a welding gun fixing seat 10-7 is provided on the welding gun column 10-6. The welding gun column 10-6 and the plate surface of the welding gun frame plate 10-2 are inclined. An L-shaped welding gun fixing seat 10-7 is installed on the top of the welding gun column 10-6. A welding gun fixing block 10-4 is hinged on the welding gun fixing seat 10-7. Specifically, the welding gun fixing block 10-4 is a rectangular metal block of two halves. Semicircular grooves for accommodating the welding gun 7-1 are arranged opposite to each other on the two rectangular metal blocks. The two semicircular grooves are assembled just for accommodating the welding gun 7-1. The welding gun 7-1 is installed on the welding gun fixing block 10-4. The tail end of the welding gun 7-1 is connected to the feeding mechanism of the electric welding machine 7 through a feeding pipe, and the tail end of the welding gun 7-1 is connected to the electric welding machine 7 through a cable.

[0042] The welding gun heads of the two welding guns 7 arranged at the other end of the two welding gun racks 10-2 are close to each other, and a guide plate 10-5 is arranged on the welding gun rack 10-2 below the welding gun column 10-6, and the distance between the two guide plates 10-5 is smaller than the distance between the gun heads of the two welding guns 7-1.

[0043] In this embodiment, combined with Fig.11 As shown, the control system includes a controller, and the output pins of the controller are respectively provided with an adjustment electric push rod output end for controlling the extension and shortening of the electric push rod; the left and right lifting cylinder control output ends are used to control the left lifting cylinder and the right lifting cylinder to control the lifting slider to move up and down, thereby controlling the welding head to rise and fall; the first servo motor forward and reverse output end is used to control the right lifting device to move left and right along the first lead screw, and the second servo motor forward and reverse output end is used to control the left lifting device to move left and right along the second lead screw; the moving platform motor control end is used to control the moving platform to move forward and backward along the frame, thereby making the welding gun move along the metal part to be welded, and a stroke sensor for adjusting the electric push rod is electrically connected to the input end of the controller, and the stroke sensor is used to detect the stroke of the telescopic rod of the adjustment electric push rod.

[0044] Working principle: Place the metal sheet to be welded horizontally above the frame, and at the same time, position and weld the piece to be welded and the metal plate to be welded. After completing the above work, start the mobile platform to the initial position, input the quality control welding gun lifting mechanism into the control system to descend to the upper surface position of the metal sheet, operate the first servo motor and the second servo motor to start, and then move the left lifting device of the welding gun and the right lifting device of the welding gun to the left and right sides of the piece to be welded respectively, input the welding program start instruction into the control system, the control system controls the mobile platform to feed forward, and the control system controls the welding gun to weld continuously. When the piece to be welded tilts to one side, the guide plate of the welding adjustment mechanism is automatically adjusted within a small range. When it exceeds the automatic adjustment range of the welding adjustment mechanism, the stroke sensor installed on the adjustment electric push rod collects the adjustment electric push rod action. At this time, the control system controls the first servo motor and the second servo motor to start, and then drives the left welding gun lifting device and the right welding gun lifting device to move in the tilt direction of the piece to be welded, ensuring that the gun head of the welding gun always remains at the connection between the welded metal sheet and the piece to be welded.

[0045] The present application has been introduced in detail above. The principles and implementation methods of the present application are described in detail using specific examples herein. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An automatic welding and automatic alignment device, comprising a frame, two rows of support legs are arranged at the bottom of the frame, and a plurality of support plates are fixed in parallel at the top of the frame, characterized in that: A mobile platform is arranged above the frame, and the mobile platform includes an operating table on the top, an electric welding machine and a hydraulic press are installed above the operating table, and two lower beams connected to each other through columns are arranged below the operating table, and rollers are arranged inside the lower beams, and the rollers are rotatably installed on both sides of the frame; an electrical box is arranged on the side of the mobile platform, and a control system is arranged in the electrical box; a bidirectional linear guide mechanism is arranged at the front end of the mobile platform, and a welding gun lifting mechanism is slidably installed on the bidirectional linear guide mechanism, and a welding gun adjustment mechanism is connected to the welding gun lifting mechanism, and a welding gun is connected to the welding gun adjustment mechanism. It is connected to the electric welding machine through a feeding pipe; the welding gun adjustment mechanism includes two welding gun frame plates, one end of which is connected through an adjustment electric push rod, and a reaming hole for connecting a rotating block is provided on the welding gun frame plate near one end of the adjustment electric push rod, and a welding gun column is provided at the other end of the welding gun frame plate, and the welding gun column and the plate surface of the welding gun frame plate are inclined, and an L-shaped welding gun fixing seat is installed on the top of the welding gun column, and a welding gun fixing block is hinged on the welding gun fixing seat, and a welding gun is installed on the welding gun fixing block; the control system includes a controller, and the output pins of the controller are respectively provided with the output ends of the adjustment electric push rod, and the left and right lifting cylinder control The output end, the first servo motor forward and reverse output end, the second servo motor forward and reverse output end and the mobile platform motor control end, the input end of the controller is electrically connected to a stroke sensor for adjusting the electric push rod; the bidirectional linear guide mechanism includes an I-shaped machine base, the cross-section of the I-shaped machine base is an I-shaped, the I-shaped machine base includes a bottom plate, a top plate and a vertical plate arranged between the bottom plate and the top plate, a left end plate and a right end plate are respectively arranged at both ends of the I-shaped machine base, and a first screw mechanism and a second screw mechanism are respectively arranged on both sides of the vertical plate, the first screw mechanism includes a first screw, one end of the first screw is connected to a screw arranged at On the first slider between the bottom plate and the top plate, the other end of the first lead screw passes through the right end plate and is connected to the first servo motor shaft; the second lead screw mechanism includes a second lead screw, one end of the second lead screw is connected to the second slider arranged between the bottom plate and the top plate, and the other end of the second lead screw passes through the left end plate and is connected to the second servo motor shaft; support rails are arranged above and below the bottom plate; the welding gun heads of the two welding guns arranged at the other ends of the two welding gun racks are close to each other, and a guide plate is arranged on the welding gun rack below the welding gun column, and the distance between the two guide plates is smaller than the distance between the two welding gun heads.

2. The automatic welding and automatic alignment device according to claim 1 is characterized in that: The first slider and the second slider are rectangular metal plates, which are respectively welded between the top plate and the bottom plate. A screw bearing hole is provided on the first slider, and a screw bearing hole is also provided on the second slider. Elliptical holes for fixing the first slider and the second slider are provided on both sides of the support rails on the top plate and the bottom plate, and the elliptical holes are arranged at intervals. The first slider is slidably installed on the first slide rails correspondingly arranged on the top plate and the bottom plate. The first slider is a sideways U-shaped plate, and the outer sides of the two horizontal parts of the U-shaped plate are provided with slide grooves matching the first slide rails, and the vertical part of the U-shaped plate is provided with a first screw bearing hole.

3. The automatic welding automatic alignment device according to claim 1 is characterized in that: The second slider is slidably installed on the second slide rails correspondingly arranged on the top plate and the bottom plate. The second slider is a sideways U-shaped plate. The outer sides of the two horizontal parts of the U-shaped plate are provided with slide grooves matching the second slide rails, and the vertical part of the U-shaped plate is provided with a screw bearing hole; the first servo motor and the second servo motor are respectively fixedly installed on the outer side walls of the right end plate and the left end plate.

4. The automatic welding automatic alignment device according to claim 1 is characterized in that: The welding gun lifting mechanism comprises a left welding gun lifting device and a right welding gun lifting device which are slidably mounted in parallel on the same side of the bidirectional linear guide mechanism.

5. The automatic welding and automatic alignment device according to claim 4 is characterized in that: The left welding gun lifting device comprises a left lifting box, a left lifting cylinder is installed on the top of the left lifting box, a lifting slide block is fixedly connected to the bottom of the left lifting cylinder through a cylinder push rod, and a rotating block is hinged under the lifting slide block; a left supporting frame is fixed on the side wall of the left lifting box, and left guide slide blocks are symmetrically arranged on the top and bottom of the left supporting frame, and the two left guide slide blocks are slidably installed on the supporting rail; a left nut block is fixed on the side wall of the left supporting frame, and the left nut block is installed on the first lead screw.

6. The automatic welding and automatic alignment device according to claim 4 is characterized in that: The right welding gun lifting device comprises a right lifting box, a right lifting cylinder is installed on the top of the right lifting box, a lifting slider is fixedly connected to the bottom of the right lifting cylinder through a cylinder push rod, and a rotating block is hinged under the lifting slider; a right supporting frame is fixed on the side wall of the right lifting box, and right guide sliders are symmetrically arranged on the top and bottom of the right supporting frame, and the two right guide sliders are slidably installed on the supporting rails; a right nut block is fixed on the side wall of the right supporting frame, and the right nut block is installed on the second lead screw.

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