A steel grating automatic welding device and welding process thereof

Abstract

The present invention discloses an automatic welding device for steel grating, comprising: a supporting structure and a steel bar conveying structure, wherein the supporting structure comprises a processing table and a plurality of vertical rods fixedly connected to the upper end of the processing table, the upper ends of the plurality of vertical rods are fixedly connected to the same horizontal top plate, and the plurality of vertical rods are connected to the same welding assembly, the upper side of the processing table is driven with a plurality of parallel steel plates, and the output end of the steel plate is driven by an external traction device, the upper end of the processing table is provided with a rectangular groove, and a limit assembly for limiting the steel plate is provided in the rectangular groove. The present invention can automatically complete the welding of steel plates and steel bars, the unloading process of the steel bars can be carried out synchronously with the conveying of the steel plates, and the efficiency of welding is relatively improved, and in addition, the steel bars and the steel plates can be stably contacted during the welding process, and the quality of welding is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel grating welding, and in particular to an automatic steel grating welding device and a welding process thereof. Background Art

[0002] Steel grating is also called mesh grille. It is a kind of steel product made of flat steel arranged crosswise with a certain spacing and crossbars, and welded into a square grid in the middle. Steel grating is generally used for ditch covers, steel structure platform plates, steel ladder treads, etc.

[0003] Most of the welding enterprises still use manual welding, and the workload is very large. At the same time, since people mostly rely on their naked eyes to weld during the welding process, the welding quality is not stable enough. Due to the poor controllability of people, it is difficult to maintain consistent welding quality. Since the welding points are relatively dense, the technical requirements for welders are high, and the welding position and parameter matching are not easy to maintain the best. In the welding process, problems such as cold welding and leaking welding often occur, and the gas generated in the welding process will cause certain harm to the human body. In addition, the existing welding device is not easy to realize the synchronous welding process of steel bars and steel plates, which reduces the welding efficiency. For this reason, we propose an automatic welding device for steel gratings and its welding process to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problems existing in the above-mentioned existing steel grating automatic welding device and its welding process, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide an automated steel grating welding device and a welding process thereof, which can automatically complete the welding work of steel plates and steel bars. The unloading process of steel bars can be carried out synchronously with the conveying of steel plates, which relatively improves the welding efficiency. In addition, during the welding process, the steel bars and steel plates can be in stable contact, which improves the welding quality.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic welding device for steel grating, comprising:

[0008] Support structure and steel bar conveying structure, the support structure includes a processing table and a plurality of vertical rods fixedly connected to the upper end of the processing table, the upper ends of the plurality of vertical rods are fixedly connected to the same horizontal top plate, and the plurality of vertical rods are connected to the same welding assembly, the upper side of the processing table is driven with a plurality of parallel steel plates, and the output end of the steel plate is driven by an external traction device, the upper end of the processing table is provided with a rectangular groove, and a limit assembly for limiting the steel plate is provided in the rectangular groove;

[0009] The steel bar conveying structure includes a rectangular table arranged on one side of the processing table, vertical support columns are respectively arranged on both sides of the rectangular table, the upper ends of the support columns are fixedly connected to support plates, the upper ends of the support plates are fixedly connected to trapezoidal slide rails, and the outer sides of the trapezoidal slide rails are slidably sleeved with trapezoidal sliders, the upper ends of the trapezoidal sliders are fixedly connected to columns, the side walls of the columns are fixedly connected to horizontal support rods, the side walls of the two support rods are fixedly connected to the same inclined blanking plate, and the side walls of the blanking plate are fixedly connected to two relatively The strip plate has guide grooves on its opposite side walls, and a plurality of steel bars are slidably connected between the guide grooves on both sides. A material unloading control assembly connected to the steel bars is arranged in the center of the side wall of the unloading plate, and a conveying assembly connected to the steel bars is arranged at the upper end of the rectangular table. A strip opening connected frontally and rearwardly is arranged in the center of the upper end of the processing table, and a steel bar lifting assembly cooperating with the conveying assembly is arranged in the strip opening, and the steel bar lifting assembly can be used to unload the steel bars on the conveying assembly and then the welding work is completed through the welding assembly.

[0010] As a preferred solution of the automatic welding device for steel gratings described in the present invention, the welding assembly includes a hydraulic cylinder arranged at the center of the lower end of the top plate, the piston end of the hydraulic cylinder is fixedly connected to a welding box, two horizontal connecting plates are fixedly sleeved on the outer wall of the welding box, a movable tube is slidably sleeved on the outer wall of the vertical rod, and the connecting plate is fixedly connected to the outer wall of the movable tube, and the lower end of the welding box is fixedly connected to a welding head opposite to the steel bar and the steel plate.

[0011] As a preferred solution of the automatic welding device for steel gratings described in the present invention, the limiting assembly includes a limiting plate fixedly connected in a rectangular groove, and the side wall of the limiting plate is provided with limiting holes corresponding to multiple steel plates, and multiple steel plates slide out of the limiting holes, and the size of the limiting holes is adapted to the steel plates.

[0012] As a preferred solution of the automatic welding device for steel gratings described in the present invention, a positioning hole is provided on the outer wall of the trapezoidal sliding block, and a fastening bolt fixed to the trapezoidal sliding rail is threadedly connected to the positioning hole.

[0013] As a preferred solution of the automatic welding device for steel gratings described in the present invention, the unloading control component includes a U-shaped bracket fixedly connected to the side wall of the unloading plate, there is a gap between the notch of the U-shaped bracket and the unloading plate, and a plurality of limiting strip rods for limiting steel bars are fixedly connected to the inner wall of the notch of the U-shaped bracket, an electromagnet is fixedly connected to the side wall of the limiting strip rod, a power supply electrically connected to the electromagnet is arranged on the outer side wall of the U-shaped bracket, and a controller connected to the power supply and the electromagnet is arranged on the outer side of the rectangular table, the electromagnet can generate magnetism to adsorb the lowermost steel bar after being energized, and the power is released during the unloading process to complete the unloading operation.

[0014] As a preferred solution of the automatic welding device for steel gratings described in the present invention, the lower end of the strip plate extends to the lower side of the blanking plate and is provided with an arc section and a vertical section, and the vertical section is arranged at the discharge position of the strip plate, and the steel bar can be kept in a vertical state and dropped through the vertical section.

[0015] As a preferred solution of the automatic welding device for steel gratings described in the present invention, the conveying assembly includes two electric slide rails fixedly connected to the upper end of the rectangular table, the electric slide rails are cooperatively connected with an electric slider, the upper end of the electric slider is fixedly connected with a vertical L-shaped bracket, the upper end of the L-shaped bracket extends to the upper side of the steel plate, and the upper end of the L-shaped bracket is fixedly connected with a conveying rod for carrying steel bars, the upper end of the conveying rod is provided with two arc-shaped grooves for placing steel bars, and the spacing length of the arc-shaped grooves is the spacing length of the welding between the steel bars and the steel plate, and the steel bars can fall into the two arc-shaped grooves after falling from the vertical end of the strip plate and complete the conveying work through the movement of the electric slider.

[0016] As a preferred solution of the automatic welding device for steel gratings described in the present invention, the steel bar lifting assembly includes two circular grooves opened on the inner bottom wall of the strip-shaped opening, a hydraulic rod is fixedly connected in the circular groove, the telescopic end of the hydraulic rod is fixedly connected to a mounting plate, the upper end of the mounting plate is provided with a T-shaped groove, an electric push rod is fixedly connected in the T-shaped groove, the telescopic end of the electric push rod is fixedly connected to a T-shaped block, the upper end of the mounting plate is provided with two mounting grooves corresponding to the welding positions of the steel bars, a push rod opposite to the mounting groove is fixedly connected on the side wall of the T-shaped block away from the electric push rod, and the other end of the push rod extends into the mounting groove and is fixedly connected to a push block, the push block can clamp and fix the steel bar in the mounting groove and ensure the stability of the welding process.

[0017] As a preferred solution of the automatic welding device for steel gratings described in the present invention, the electric slide rail, electric slider, hydraulic rod and electric push rod are respectively connected to an external controller and complete corresponding tasks.

[0018] As a preferred embodiment of the automatic welding device for steel gratings of the present invention, the welding process of the automatic welding device for steel gratings comprises the following steps:

[0019] Step 1: The steel plate is pulled and transported by an external traction device and moved to the position where welding is required, and the electromagnet is released from the adsorption of the steel bar on the blanking plate and the steel bar is made to fall from the vertical section of the strip plate. At the same time, the movement of the electric slider is controlled so that the steel bar can fall smoothly into the arc groove on the conveying rod. This process is carried out synchronously and one welding operation needs to complete the conveying of two steel bars;

[0020] Step 2: After the steel bar falls into the conveying rod, continue to control the electric slider to move the steel bar to the position corresponding to the mounting groove at the upper end of the mounting plate, then start the hydraulic rod to make the mounting plate move upward and realize the separation of the steel bar from the conveying rod, then the electric slider returns to the initial position to prepare for the next welding, and at the same time, the electric push rod at the upper end of the mounting plate starts and clamps the steel bar through the push block;

[0021] Step 3: Start the hydraulic cylinder and hydraulic rod downward, open the welding head and perform high-temperature welding after the steel bar contacts the steel plate to complete a complete set of welding procedures. After the welding is completed, the hydraulic cylinder returns and repeats the above steps for mass processing.

[0022] The beneficial effects of the present invention are as follows: the present invention can automatically complete the welding work of steel plates and steel bars, the unloading process of steel bars can be carried out synchronously with the conveying of steel plates, which relatively improves the welding efficiency. In addition, during the welding process, the steel bars and steel plates can be in stable contact, which improves the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 It is a schematic diagram of the overall structure of the automatic welding device for steel grating and its welding process of the present invention.

[0025] Figure 2 It is a front structural schematic diagram of the automatic welding device for steel grating and its welding process of the present invention.

[0026] Figure 3 It is a side structural schematic diagram of the automatic welding device for steel grating and its welding process of the present invention.

[0027] Figure 4It is a schematic diagram of the top view of the structure of the processing table of the automatic welding device for steel grating and its welding process of the present invention.

[0028] Figure 5 It is a schematic diagram of the blanking plate structure of the automatic welding device for steel grating and its welding process of the present invention.

[0029] Figure 6 for Figure 4 Schematic diagram of the local enlarged structure at point A in the middle. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Reference Figure 1-Figure 6 , provides a steel grating automatic welding device, comprising:

[0035] Support structure 100 and steel bar conveying structure 200;

[0036] Among them, the supporting structure 100 includes a processing table 101 and a plurality of vertical rods 102 fixedly connected to the upper end of the processing table 101, the upper ends of the plurality of vertical rods 102 are fixedly connected to the same horizontal top plate 104, and the same welding assembly is connected between the plurality of vertical rods 102, the welding assembly includes a hydraulic cylinder 105 arranged at the center of the lower end of the top plate 104, the piston end of the hydraulic cylinder 105 is fixedly connected to a welding box 106, two horizontal connecting plates 107 are fixedly sleeved on the outer wall of the welding box 106, a movable barrel 108 is slidably sleeved on the outer wall of the vertical rod 102, and the connecting plate 107 is fixedly connected to the outer wall of the movable barrel 108, and the lower end of the welding box 106 is fixedly connected to a welding head 109 opposite to the steel bar 210 and the steel plate 103. The welding process is a prior art and has not been improved.

[0037] Specifically, a plurality of parallelly arranged steel plates 103 are transmitted on the upper side of the processing table 101, and the output end of the steel plate 103 is driven by an external traction device. A rectangular groove is provided at the upper end of the processing table 101, and a limiting assembly for limiting the steel plate 103 is provided in the rectangular groove. The limiting assembly includes a limiting plate 110 fixedly connected in the rectangular groove, and limiting holes corresponding to the plurality of steel plates 103 are opened on the side wall of the limiting plate 110. The plurality of steel plates 103 slide out of the limiting holes, and the size of the limiting holes is adapted to the steel plates 103, thereby improving the stability of the welding process of the steel plates 103.

[0038] Among them, the steel bar conveying structure 200 includes a rectangular table 201 arranged on one side of the processing table 101, and vertical support columns 202 are respectively arranged on both sides of the rectangular table 201. The upper ends of the support columns 202 are fixedly connected with support plates 203, and the upper ends of the support plates 203 are fixedly connected with trapezoidal slide rails 204, and the outer side of the trapezoidal slide rails 204 is slidably sleeved with a trapezoidal slider 205. A positioning hole is opened on the outer wall of the trapezoidal slider 205, and the inner thread of the positioning hole is connected with a fastening bolt fixed to the trapezoidal slide rail 204, so that the position of the trapezoidal slider 205 can be adjusted to increase the scope of use.

[0039] Furthermore, the upper end of the trapezoidal slider 205 is fixedly connected to a column 206, and a horizontal support rod 207 is fixedly connected to the side wall of the column 206. The side walls of the two support rods 207 are fixedly connected to the same inclined blanking plate 208. Two opposite strip plates 209 are fixedly connected to the side wall of the blanking plate 208, and guide grooves are provided on the opposite side walls of the two strip plates 209. A plurality of steel bars 210 are slidably connected between the guide grooves on both sides. A blanking control component connected to the steel bars 210 is provided in the center of the side wall of the blanking plate 208. The blanking control component includes a U-shaped bracket 211 fixedly connected to the side wall of the blanking plate 208, and there is a gap between the notch of the U-shaped bracket 211 and the blanking plate 208, and the U-shaped bracket 2 A plurality of limiting strip rods 212 for limiting the steel bars are fixedly connected to the inner wall of the slot 11, and an electromagnet 213 is fixedly connected to the side wall of the limiting strip rod 212. A power supply electrically connected to the electromagnet 213 is arranged on the outer wall of the U-shaped bracket 211, and a controller connected to the power supply and the electromagnet 213 is arranged on the outer side of the rectangular table 201. The electromagnet 213 can generate magnetism to adsorb the lowermost steel bar 210 after being energized, and the power is released during the unloading process to complete the unloading operation. Specifically, the lower end of the strip plate 209 extends to the lower side of the unloading plate 208 and is provided with an arc section and a vertical section. The vertical section is arranged at the unloading position of the strip plate 209, and the steel bar 210 can be kept in a vertical state and dropped through the vertical section.

[0040] Furthermore, a conveying assembly connected to the steel bar 210 is provided at the upper end of the rectangular table 201, and the conveying assembly includes two electric slide rails 214 fixedly connected to the upper end of the rectangular table 201, and an electric slider 215 is connected to the electric slide rail 214, and the upper end of the electric slider 215 is fixedly connected to a vertical L-shaped bracket 216, and the upper end of the L-shaped bracket 216 extends to the upper side of the steel plate 103, and the upper end of the L-shaped bracket 216 is fixedly connected to a conveying rod 217 for carrying the steel bar 210, and the upper end of the conveying rod 217 is provided with two arc-shaped grooves for placing the steel bar 210, and the spacing length of the arc-shaped grooves is the spacing length of the welding of the steel bar 210 and the steel plate 103. After the steel bar 210 falls from the vertical end of the strip plate 209, it can fall into the two arc-shaped grooves and complete the conveying work through the movement of the electric slider 215.

[0041] Among them, a strip opening connected front and back is opened in the center of the upper end of the processing table 101, and a steel bar lifting assembly matched with the conveying assembly is arranged in the strip opening, through which the steel bar lifting assembly can unload the steel bar 210 on the conveying assembly and then complete the welding work through the welding assembly. The steel bar lifting assembly includes two circular grooves opened on the inner bottom wall of the strip opening, and a hydraulic rod 218 is fixedly connected in the circular groove. The telescopic end of the hydraulic rod 218 is fixedly connected to a mounting plate 219, and the upper end of the mounting plate 219 is provided with a T-shaped groove. An electric push rod 220 is fixedly connected in the groove, and a T-shaped block 221 is fixedly connected to the telescopic end of the electric push rod 220. Two mounting grooves corresponding to the welding positions of the steel bar 210 are provided at the upper end of the mounting plate 219. A push rod 222 opposite to the mounting groove is fixedly connected on the side wall of the T-shaped block 221 away from the electric push rod 220, and the other end of the push rod 222 extends into the mounting groove and is fixedly connected to a push block 223. The push block 223 can clamp and fix the steel bar 210 in the mounting groove and ensure the stability of the welding process.

[0042] Among them, the electric slide rail 214, the electric slider 215, the hydraulic rod 218 and the electric push rod 220 are respectively connected to the external controller and complete corresponding tasks. The above control processes are all existing technologies.

[0043] Among them, the welding process of the steel grating automatic welding device includes the following steps:

[0044] Step 1: The steel plate 103 is pulled and transported by an external traction device and moved to the position where welding is required, and the electromagnet 213 is released from the adsorption of the steel bar 210 on the blanking plate 208 and the steel bar 210 is made to fall from the vertical section of the strip plate 209. At the same time, the movement of the electric slider 215 is controlled so that the steel bar 210 can smoothly fall into the arc groove on the conveying rod 217. This process is carried out synchronously and one welding operation needs to complete the conveying of two steel bars 210;

[0045] Step 2: After the steel bar 210 falls into the conveying rod 217, the electric slider 215 is continuously controlled to move the steel bar 210 to a position corresponding to the mounting groove at the upper end of the mounting plate 219, and then the hydraulic rod 218 is activated to move the mounting plate 219 upward and realize the separation of the steel bar 210 from the conveying rod 217. Then the electric slider 215 returns to the initial position to prepare for the next welding. At the same time, the electric push rod 220 at the upper end of the mounting plate 219 is activated and the steel bar 210 is clamped and fixed by the push block 223.

[0046] Step 3: Start the hydraulic cylinder 105 and the hydraulic rod 218 downward, and after the steel bar 210 contacts the steel plate 103, open the welding head 109 and perform high-temperature welding operation on it to complete a complete set of welding procedures. After the welding is completed, the hydraulic cylinder 105 returns and repeats the above steps for mass processing.

[0047] It should be noted that 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 may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An automatic welding device for steel grating, characterized in that: include: A support structure (100) comprising a processing table (101) and a plurality of vertical rods (102) fixedly connected to the upper end of the processing table (101), the upper ends of the plurality of vertical rods (102) being fixedly connected to the same horizontal top plate (104), and the plurality of vertical rods (102) being connected to the same welding assembly, a plurality of parallel steel plates (103) being driven on the upper side of the processing table (101), and the output ends of the steel plates (103) being driven by an external traction device, a rectangular groove being provided at the upper end of the processing table (101), and a limit assembly for limiting the steel plates (103) being provided in the rectangular groove; A steel bar conveying structure (200) comprises a rectangular table (201) arranged on one side of a processing table (101), vertical support columns (202) are respectively arranged on both sides of the rectangular table (201), the upper end of the support column (202) is fixedly connected to a support plate (203), the upper end of the support plate (203) is fixedly connected to a trapezoidal slide rail (204), and the outer side of the trapezoidal slide rail (204) is slidably sleeved with a trapezoidal slider (205), and the upper end of the trapezoidal slider (205) is fixedly connected to a column (206). ), a horizontal support rod (207) is fixedly connected to the side wall of the column (206), the side walls of the two support rods (207) are fixedly connected to the same inclined blanking plate (208), the side wall of the blanking plate (208) is fixedly connected to two opposite strip plates (209), and the opposite side walls of the two strip plates (209) are each provided with a material guide groove, a plurality of steel bars (210) are slidably connected between the material guide grooves on both sides, and a lower material bar (210) connected to the steel bar (210) is provided in the center of the side wall of the blanking plate (208). A material control component, the material control component comprising a U-shaped bracket (211) fixedly connected to the side wall of a material blanking plate (208), a gap being present between the notch of the U-shaped bracket (211) and the material blanking plate (208), a plurality of limit strip rods (212) for limiting steel bars being fixedly connected to the inner wall of the notch of the U-shaped bracket (211), an electromagnet (213) being fixedly connected to the side wall of the limit strip rod (212), and a member electrically connected to the electromagnet (213) being provided on the outer wall of the U-shaped bracket (211). A power source is provided, and a controller connected to the power source and the electromagnet (213) is provided on the outside of the rectangular table (201); the electromagnet (213) is capable of generating magnetism to adsorb the steel bar (210) at the bottom when energized, and is de-energized during the unloading process to complete the unloading operation; the lower end of the strip plate (209) extends to the lower side of the unloading plate (208) and is provided with an arc section and a vertical section; the vertical section is provided at the unloading position of the strip plate (209); and the steel bar (210) can be kept in a vertical state and dropped by the vertical section; The upper end of the rectangular platform (201) is provided with a conveying assembly connected to the steel bar (210), and the conveying assembly comprises two electric slide rails (214) fixedly connected to the upper end of the rectangular platform (201), and the electric slide rails (214) are matched with electric sliders (215), and the upper end of the electric slider (215) is fixedly connected to a vertical L-shaped bracket (216), and the upper end of the L-shaped bracket (216) extends to the upper side of the steel plate (103), and the L-shaped bracket (216) is connected to the upper end of the steel plate (103). A conveying rod (217) for carrying the steel bar (210) is fixedly connected to the upper end of the frame (216); two arc-shaped grooves for placing the steel bar (210) are provided at the upper end of the conveying rod (217); and the spacing length of the arc-shaped grooves is the spacing length of the welding of the steel bar (210) and the steel plate (103); after the steel bar (210) falls from the vertical end of the strip plate (209), it can fall into the two arc-shaped grooves and complete the conveying work through the movement of the electric slider (215); The processing table (101) is provided with a strip opening connected front to back at the center of the upper end thereof, and a steel bar lifting assembly cooperating with the conveying assembly is provided in the strip opening, and the steel bar lifting assembly can be used to unload the steel bar (210) on the conveying assembly and then the welding work is completed by the welding assembly, and the steel bar lifting assembly comprises two circular grooves provided on the inner bottom wall of the strip opening, a hydraulic rod (218) is fixedly connected in the circular groove, the telescopic end of the hydraulic rod (218) is fixedly connected to a mounting plate (219), and a T-shaped groove is provided at the upper end of the mounting plate (219), and a fixing member (219) is fixed in the T-shaped groove. An electric push rod (220) is connected, and the telescopic end of the electric push rod (220) is fixedly connected to a T-shaped block (221). The upper end of the mounting plate (219) is provided with two mounting grooves corresponding to the welding positions of the steel bar (210). A push rod (222) opposite to the mounting groove is fixedly connected to the side wall of the T-shaped block (221) away from the electric push rod (220), and the other end of the push rod (222) extends into the mounting groove and is fixedly connected to a push block (223). The push block (223) can clamp and fix the steel bar (210) in the mounting groove and ensure the stability of the welding process.

2. The automatic welding device for steel grating according to claim 1 is characterized in that: The welding assembly comprises a hydraulic cylinder (105) arranged at the center of the lower end of the top plate (104); the piston end of the hydraulic cylinder (105) is fixedly connected to a welding box (106); two horizontal connecting plates (107) are fixedly sleeved on the outer wall of the welding box (106); a movable tube (108) is slidably sleeved on the outer wall of the vertical rod (102); the connecting plate (107) is fixedly connected to the outer wall of the movable tube (108); and the lower end of the welding box (106) is fixedly connected to a welding head (109) opposite to the steel bar (210) and the steel plate (103).

3. The automatic welding device for steel grating according to claim 2 is characterized in that: The limiting assembly comprises a limiting plate (110) fixedly connected in the rectangular groove, and a side wall of the limiting plate (110) is provided with limiting holes corresponding to the plurality of steel plates (103), the plurality of steel plates (103) slide out of the limiting holes, and the size of the limiting holes is adapted to the steel plates (103).

4. The automatic welding device for steel grating according to claim 3 is characterized in that: A positioning hole is provided on the outer side wall of the trapezoidal sliding block (205), and a fastening bolt fixed to the trapezoidal sliding rail (204) is threadedly connected to the inner side of the positioning hole.

5. The automatic welding device for steel grating according to claim 4 is characterized in that: The electric slide rail (214), the electric slide block (215), the hydraulic rod (218) and the electric push rod (220) are respectively connected to an external controller and perform corresponding tasks.

6. The automatic welding device for steel grating according to claim 5 is characterized in that: The welding process of the steel grating automatic welding device includes the following steps: Step 1: The steel plate (103) is pulled and transported by an external traction device and moved to a position where welding is required and stopped, the electromagnet (213) is released from adsorption of the steel bar (210) on the blanking plate (208) and the steel bar (210) is made to fall from the vertical section of the strip plate (209), and at the same time, the movement of the electric slider (215) is controlled so that the steel bar (210) can smoothly fall into the arc-shaped groove on the conveying rod (217), and the process is carried out synchronously and one welding operation needs to complete the conveying of two steel bars (210); Step 2: After the steel bar (210) falls into the conveying rod (217), the electric slider (215) is continuously controlled to move the steel bar (210) to a position corresponding to the mounting groove at the upper end of the mounting plate (219), and then the hydraulic rod (218) is activated to move the mounting plate (219) upward and realize the separation of the steel bar (210) from the conveying rod (217), and then the electric slider (215) returns to the initial position to prepare for the next welding, and at the same time, the electric push rod (220) at the upper end of the mounting plate (219) is activated and the steel bar (210) is clamped and fixed by the push block (223); Step 3: Start the hydraulic cylinder (105) and the hydraulic rod (218) downward, and after the steel bar (210) contacts the steel plate (103), open the welding head (109) and perform a high-temperature welding operation on it to complete a complete set of welding procedures. After the welding is completed, the hydraulic cylinder (105) returns and repeats the above steps to perform mass processing.

Images