Automatic welding machine for steel structure purlin support plate

Abstract

The present invention provides an automatic welding machine for purlin support plates of steel structures, comprising a frame and a traveling mechanism, a welding gun angle swing mechanism, a welding table and a controller installed on the frame. The controller is respectively connected to the traveling mechanism and the welding gun angle swing mechanism. The traveling mechanism drives the welding gun on the welding gun angle swing mechanism to perform back and forth welding on the purlin support plates on the welding table, thereby realizing bidirectional welding. The welding of the purlin support plates twice can be completed in one back and forth movement, which has high efficiency and simple operation. The welding gun angle swing mechanism realizes the distance adjustment of the welding gun to the purlin support plates and the alignment of the weld, thereby ensuring the welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of processing and manufacturing steel structure components, in particular to an automatic welding machine for steel structure purlin support plates. Background Art

[0002] Purlin supports are usually needed in steel structure projects. An industrial plant of 10,000 square meters usually requires tens of thousands of purlin supports. In the previous steel structure production process, purlin supports were welded manually. There are currently two welding methods: one is to directly weld the purlin supports on the components, and the other is to have a welder weld the purlin supports and then weld them to the steel structure components. No matter which method is used, the efficiency is relatively low, and it also requires a welding worker with certain professional skills, and the production cost is high. Summary of the invention

[0003] In order to solve the above problems, the present invention provides an automatic welding machine for steel structure purlin support plates.

[0004] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A steel structure purlin support plate automatic welding machine comprises a frame and a traveling mechanism, a welding gun angle swing mechanism, a welding table and a controller installed on the frame, wherein the controller is respectively connected to the traveling mechanism and the welding gun angle swing mechanism, the traveling mechanism drives the welding gun on the welding gun angle swing mechanism to perform back and forth welding on the purlin support plate on the welding table, and the welding gun angle swing mechanism realizes the distance adjustment of the welding gun to the purlin support plate and the alignment of the weld.

[0006] Furthermore, the walking mechanism includes a stepper motor, a screw rod, a guide rail slider and a mounting seat, one end of the screw rod is connected to a bearing mounted on the mounting seat, and the other end is connected to the stepper motor mounted on the mounting seat, the lower part of the guide rail slider is threadedly connected to the screw rod, and first sensors are respectively provided at both ends of the mounting seat.

[0007] Furthermore, the welding gun angle swing mechanism is installed on the guide rail slider, and the welding gun angle swing mechanism includes a DC motor, two connecting rods, two up and down adjustment rods, and two welding gun clamps. A turntable is provided on the motor shaft of the DC motor, and the lower ends of the two up and down adjustment rods are respectively connected to the two bearing supports installed on both sides of the guide rail slider, and the turntable is respectively connected to the two up and down adjustment rods through the two connecting rods, and the two welding gun clamps are respectively fixed on the two up and down adjustment rods and close to the welding table.

[0008] Furthermore, an arc plate is provided in front of the turntable, and a second sensor is provided on the arc plate.

[0009] Furthermore, the welding gun clamp includes a connecting sleeve connected to the upper and lower adjustment rods, a connecting block fixed to the connecting sleeve, and two welding gun clamping blocks rotatably connected to the connecting block via a connecting plate.

[0010] Furthermore, the connecting block is provided with an axial hole, the lower end surface of the connecting plate is provided with a connecting shaft matched with the axial hole, and the side end of the connecting block is provided with a locking bolt.

[0011] Furthermore, the welding table includes a placement plate, a purlin support plate centering mechanism, and a purlin support plate limiting mechanism, and the purlin support plate centering mechanism and the purlin support plate limiting mechanism are arranged on the upper end surface of the placement plate.

[0012] Furthermore, the purlin support plate limiting mechanism is a 7-shaped plate.

[0013] Furthermore, the purlin support plate centering mechanism includes a mounting frame fixed on the placement plate and an electromagnet arranged on the mounting frame.

[0014] Furthermore, the walking mechanism is located below the welding table.

[0015] The beneficial effects of the present invention are:

[0016] 1. The walking mechanism drives the welding gun on the welding gun angle swing mechanism to weld the purlin support plate on the welding table back and forth, realizing two-way welding. The welding of two purlin support plates can be completed in one back and forth movement, which is highly efficient and easy to operate.

[0017] 2. The structure of this welding machine is simple, and the production and maintenance costs are low. Compared with the automatic robot arm that costs hundreds of thousands of yuan, the production cost of this structure is only a few thousand yuan, and the subsequent maintenance can be completed by ordinary electrical workers;

[0018] 3. The labor cost is low. Ordinary workers can use this welding machine to replace professional welders, which greatly reduces the personnel cost. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a structural schematic diagram of the walking mechanism and the welding gun angle swing mechanism in the present invention;

[0021] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0022] In the figure: 1. stepper motor; 2. lead screw; 3. guide rail slider; 4. first sensor; 5. DC motor; 6. connecting rod; 7. bearing support; 8. up and down adjustment rod; 9. welding gun clamp; 10. welding gun; 11. controller; 12. purlin support plate limit mechanism; 13. frame; 14. electromagnet; 15. second sensor; 16. mounting frame; 17. mounting base. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with the accompanying drawings:

[0024] like Figure 1 As shown, an automatic welding machine for steel structure purlin support plates includes a frame 13 and a walking mechanism installed on the frame 13, a welding gun angle swing mechanism, a welding table, and a controller 11. The controller 11 is connected to the walking mechanism and the welding gun angle swing mechanism respectively. The welding table includes a placement plate, a purlin support plate centering mechanism, and a purlin support plate limiting mechanism 12. The purlin support plate limiting mechanism 12 is a 7-shaped plate lying flat on the upper end surface of the placement plate. The purlin support plate centering mechanism includes a mounting frame 16 fixed on the placement plate and a setting After one purlin support plate is placed against the 7-shaped plate by the electromagnet 14 on the mounting frame 16, the other purlin support plate is firmly placed vertically therewith by the electromagnet 14, and the walking mechanism drives the welding gun 10 on the welding gun angle swing mechanism to weld the purlin support plate on the welding table back and forth, realizing bidirectional welding, and the welding of two purlin support plates can be completed in one back and forth, which is highly efficient and easy to operate; and the welding gun angle swing mechanism realizes the distance adjustment of the welding gun 10 to the purlin support plate and the alignment of the weld, thereby improving the welding quality. In this embodiment, the walking mechanism is located below the welding table, that is, the walking mechanism is located at the lower layer of the frame 13, and the welding table is located at the upper layer of the frame 13, so as to avoid the walking mechanism being located above the welding table and affecting the operation.

[0025] like Figure 2 As shown, the walking mechanism includes a stepper motor 1, a screw rod 2, a guide rail slider 3 and a mounting seat 17. One end of the screw rod 2 is connected to a bearing mounted on the mounting seat 17, and the other end is connected to the stepper motor 1 mounted on the mounting seat 17. The stepper motor 1 is connected to a controller 11. The lower part of the guide rail slider 3 is threadedly connected to the screw rod 2. First sensors 4 are respectively provided at both ends of the mounting seat 17. The first sensor 4 is electrically connected to the controller 11, that is, driven by the stepper motor 1, the guide rail slider 3 moves back and forth on the screw rod 2 without colliding with the two ends of the mounting seat 17, which is safe and reliable.

[0026] Moreover, the welding gun angle swing mechanism is installed on the guide rail slider 3, and the welding gun angle swing mechanism includes a DC motor 5, two connecting rods 6, two up-and-down adjustment rods 8, and two welding gun clamps 9. The DC motor 5 is connected to the controller 11. A turntable is provided on the motor shaft of the DC motor 5. The lower ends of the two up-and-down adjustment rods 8 are respectively connected to two bearing supports 7 installed on both sides of the guide rail slider 3. The turntable is respectively connected to the two up-and-down adjustment rods 8 through two connecting rods 6. The two welding gun clamps 9 are respectively fixed on the two up-and-down adjustment rods 8 and are arranged close to the welding table, that is, on the belt of the DC motor 5. Under the action, the welding gun 10 installed on the welding gun clamp 9 can be close to or away from the welding table; and an arc plate is provided in front of the turntable, and two second sensors 15 are provided on the arc plate. The second sensors 15 are electrically connected to the controller 11, and the two second sensors 15 respectively correspond to the highest positions that the connection points of the two connecting rods 6 and the turntable can reach, that is, when the DC motor 5 drives the welding gun 10 to approach or move away from the appropriate position of the welding table, the second sensor 15 will give a signal to the controller 11, thereby controlling the DC motor 5 to stop operating and avoiding the welding gun 10 from being too close to or too far away from the welding table.

[0027] like Figure 3 As shown, the welding gun clamp 9 includes a connecting sleeve connected to the upper and lower adjusting rods 8, a connecting block fixed to the connecting sleeve, and two welding gun clamps rotatably connected to the connecting block through a connecting plate; wherein the connecting block is provided with an axial hole, the lower end surface of the connecting plate is provided with a connecting shaft adapted to the axial hole, and the side end of the connecting block is provided with a locking bolt, that is, loosening the locking bolt can adjust the welding gun 10 in a plane, further adjusting the distance between the welding and the welding table, and facilitating welding; and the connecting plate is connected to the welding gun clamp by screws, and the angle of the welding gun 10 can be adjusted by loosening or tightening the screws.

[0028] The working principle of the present invention is:

[0029] like Figure 1 , 2As shown in Figure 3, before placing the purlin support plate, under the control of the controller 11, the DC motor 5 is first started to make the welding guns 10 on both sides of the welding table away from the welding table, so that it is convenient for the staff to place the purlin support plate on the welding table. When placing the purlin support plate, the first purlin support plate is first placed against the 7-shaped plate, and then the second purlin support plate is vertically close to the electromagnet 14 and placed perpendicularly to the first purlin support plate. After that, the DC motor 5 is started to make the welding gun 10 close to and align with one end of the weld of the two purlin support plates and start welding. At the same time, the stepper motor 1 is started to make the welding gun 10 move horizontally in the positive direction, so that the welding gun 10 moves from one end of the weld to the The other end is welded. After the welding of the entire weld is completed, the stepper motor 1 is stopped, and the DC motor 5 is started to move the welding gun 10 away from the welding table. Then, the purlin support plate to be welded is replaced, and then the DC motor 5 is started to make the welding gun 10 close to the welding table and aim at one end of the weld and start welding. At the same time, the stepper motor 1 is started to make the welding gun 10 move horizontally in the opposite direction, so that the welding gun 10 welds from one end of the weld to the other end. After the welding of the entire weld is completed, the stepper motor 1 is stopped, and the DC motor 5 is started to move the welding gun 10 away from the welding table. The forward and reverse horizontal movement welding of the welding gun 10 and the welding of the purlin support plate twice can be completed.

[0030] The above are only preferred embodiments of the present invention, and the patent protection scope of the present invention is not limited thereto. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, directly or indirectly used in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. An automatic welding machine for steel structure purlin support plates, characterized in that: The invention comprises a frame and a traveling mechanism, a welding gun angle swing mechanism, a welding table and a controller installed on the frame. The controller is connected to the traveling mechanism and the welding gun angle swing mechanism respectively. The traveling mechanism drives the welding gun on the welding gun angle swing mechanism to weld the purlin support plate on the welding table back and forth. The welding gun angle swing mechanism realizes the distance adjustment between the welding gun and the purlin support plate and the alignment of the weld. The traveling mechanism comprises a stepping motor, a screw rod, a guide rail slider and a mounting seat. One end of the screw rod is connected to a bearing installed on the mounting seat, and the other end is connected to the stepping motor installed on the mounting seat. The guide rail slider is connected, the lower part of the guide rail slider is threadedly connected to the screw rod, and the two ends of the mounting seat are respectively provided with a first sensor; the welding gun angle swing mechanism is installed on the guide rail slider, and the welding gun angle swing mechanism includes a DC motor, 2 connecting rods, 2 up and down adjustment rods, and 2 welding gun clamps. A turntable is provided on the motor shaft of the DC motor, and the lower ends of the two up and down adjustment rods are respectively connected to the two bearing supports installed on both sides of the guide rail slider, and the turntable is respectively connected to the two up and down adjustment rods through the two connecting rods, and the two welding gun clamps are respectively fixed on the two up and down adjustment rods and close to the welding table.

2. The automatic welding machine for steel structure purlin support plates according to claim 1 is characterized in that: An arc plate is arranged in front of the rotating disk, and a second sensor is arranged on the arc plate.

3. The automatic welding machine for steel structure purlin support plates according to claim 1 is characterized in that: The welding gun clamp comprises a connecting sleeve connected to the upper and lower adjusting rods, a connecting block fixed to the connecting sleeve, and two welding gun clamping blocks rotatably connected to the connecting block via a connecting plate.

4. The automatic welding machine for steel structure purlin support plates according to claim 3 is characterized in that: The connecting block is provided with an axial hole, the lower end surface of the connecting plate is provided with a connecting shaft matched with the axial hole, and the side end of the connecting block is provided with a locking bolt.

5. The automatic welding machine for steel structure purlin support plates according to claim 1 is characterized in that: The welding table comprises a placement plate, a purlin support plate centering mechanism, and a purlin support plate limiting mechanism. The purlin support plate centering mechanism and the purlin support plate limiting mechanism are arranged on the upper end surface of the placement plate.

6. The automatic welding machine for steel structure purlin support plates according to claim 5, characterized in that: The purlin supporting plate limiting mechanism is a 7-shaped plate.

7. The automatic welding machine for steel structure purlin support plates according to claim 5, characterized in that: The purlin support plate centering mechanism comprises a mounting frame fixed on the placement plate and an electromagnet arranged on the mounting frame.

8. The automatic welding machine for steel structure purlin support plates according to any one of claims 1 to 7, characterized in that: The walking mechanism is located below the welding table.

Images