Automatic welding production line system for locking hoops

Abstract

The utility model discloses a locking hoop automatic welding production line system which comprises an upper-layer carrier conveying mechanism and a lower-layer carrier conveying mechanism, and a carrier jacking mechanism and a carrier descending mechanism are arranged at the head end and the tail end of the upper-layer carrier conveying mechanism and the head end and the tail end of the lower-layer carrier conveying mechanism respectively. An electromagnet transfer mechanism is arranged above the head end of the upper-layer carrier conveying mechanism, and a locking hoop servo feeding mechanism is arranged on one side of the outer side of the electromagnet transfer mechanism. A connecting plate servo feeding mechanism, a reinforcing rib servo feeding mechanism, a first robot carbon dioxide arc welding machine, a semi-finished product weldment turnover mechanism and a second robot carbon dioxide arc welding machine are sequentially arranged behind the electromagnet transfer mechanism. All the feeding mechanisms adopt a servo feeding mode, the automation degree is high, the requirement for operators is low, a professional welder can be replaced to complete welding, the labor cost is greatly saved, and the production efficiency is improved to 480 pieces per shift from 200 pieces per shift in the past.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic production line equipment, in particular to a locking hoop automatic welding production line system. Background Art

[0002] In the field of steel structure production and manufacturing, locking hoops are applied as auxiliary components on many large steel components. The structure of the locking hoop generally consists of two semi-circular hoops closed and locked with a locking nut. A connecting plate is welded at the crown part of each locking hoop. Reinforcing ribs are welded on both sides of the semi-circular locking hoop workpiece and on one side of the crown connecting plate. This is the basic structure of the locking hoop. When processing this structure, currently the connecting plates and reinforcing ribs are basically welded manually. The manual welding production method has low production efficiency. It can barely keep up with the production rhythm when the demand is small, but when the demand is large, it will affect the production progress. Therefore, it is very necessary to design a fully automatic locking hoop welding production line. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a locking hoop automatic welding production line system in view of the above situation. Each mechanism of this production line system is novel in design and has a high degree of automation with servo feeding.

[0004] The specific scheme of the utility model is as follows: A locking hoop automatic welding production line system includes an upper carrier conveying mechanism and a lower carrier conveying mechanism. A number of carriers are transported on the upper carrier conveying mechanism and the lower carrier conveying mechanism. A carrier lifting mechanism and a carrier lowering mechanism are respectively arranged at the head and tail ends of the upper carrier conveying mechanism and the lower carrier conveying mechanism. The carrier lifting mechanism lifts the carrier on the lower carrier conveying mechanism and transfers it to the upper carrier conveying mechanism. The carrier lowering mechanism lowers the carrier on the upper carrier conveying mechanism and transfers it to the lower carrier conveying mechanism. An electromagnet transfer mechanism is arranged above the head end of the upper carrier conveying mechanism. A locking hoop servo feeding mechanism is arranged beside the outside of the electromagnet transfer mechanism. A connecting plate servo feeding mechanism, a reinforcing rib servo feeding mechanism, a first robotic MIG welder, a semi-finished welded part flipping mechanism, and a second robotic MIG welder are successively arranged behind the electromagnet transfer mechanism. Among them, the first robotic MIG welder, the semi-finished welded part flipping mechanism, and the second robotic MIG welder are all arranged on one side along the line of the upper carrier conveying mechanism. The connecting plate servo feeding mechanism and the reinforcing rib servo feeding mechanism are both arranged above the upper carrier conveying mechanism.

[0005] Furthermore, in the present utility model, the upper vehicle conveying mechanism and the lower vehicle conveying mechanism have the same structure. Each has a conveying frame, and three conveying chains or conveyor belts are arranged side by side at the same height on the conveying frame. The conveying chains or conveyor belts are driven by a servo motor to operate in a cycle.

[0006] Furthermore, in the present utility model, the electromagnet transfer mechanism includes a first screw rod transverse movement mechanism erected above the upper vehicle conveying mechanism. The first screw rod transverse movement mechanism is driven by a servo motor to operate. A first lifting cylinder is connected to the first screw rod transverse movement mechanism through a screw rod seat block. The first lifting cylinder moves horizontally under the drive of the first screw rod transverse movement mechanism together with the screw rod seat block. The piston rod of the first lifting cylinder is arranged downward. A magnet plate is fixedly connected to the lower end of the piston rod of the first lifting cylinder. Three electromagnets are arranged in a triangular shape on the bottom surface of the magnet plate. The three electromagnets are used to adsorb and lock the hoop workpiece.

[0007] Furthermore, in the present utility model, the connecting plate servo feeding mechanism includes a second screw rod transverse movement mechanism erected above the upper vehicle conveying mechanism. The second screw rod transverse movement mechanism is driven by a servo motor to operate. A connecting plate turning cylinder is connected to the second screw rod transverse movement mechanism through a screw rod seat block. The output end of the connecting plate turning cylinder is connected to a second lifting cylinder. A negative pressure suction nozzle is arranged at the piston rod end of the second lifting cylinder. The negative pressure suction nozzle is used to adsorb the connecting plate workpiece; a connecting plate feeding magazine is also arranged beside the outside of the second screw rod transverse movement mechanism, and a connecting plate lifting cylinder is arranged in the connecting plate feeding magazine.

[0008] Furthermore, in the present utility model, the reinforcing rib servo feeding mechanism includes a third screw rod transverse movement mechanism erected above the upper vehicle conveying mechanism. The third screw rod transverse movement mechanism is driven by a servo motor to operate. Three third lifting cylinders are simultaneously connected to the third screw rod transverse movement mechanism through screw rod seat blocks. A negative pressure suction nozzle is arranged at the piston rod end of the third lifting cylinder. The negative pressure suction nozzle is used to adsorb the reinforcing rib workpiece; a reinforcing rib feeding magazine is arranged corresponding to each of the three third lifting cylinders beside the outside of the third screw rod transverse movement mechanism, and a reinforcing rib lifting cylinder is arranged in each reinforcing rib feeding magazine.

[0009] Furthermore, in the present utility model, the semi-finished product welding part turning mechanism includes a semi-finished product lifting cylinder. The semi-finished product lifting cylinder is arranged upward and its output end is connected to a longitudinal telescopic cylinder. The front end of the piston rod of the longitudinal telescopic cylinder is connected to a rotary cylinder. The output end of the rotary cylinder is connected to a rotary plate. Two electromagnets are arranged on the rotary plate. The two electromagnets are used to adsorb the end plates at both ends of the hoop workpiece.

[0010] Further, in the utility model, the locking hoop servo loading mechanism includes a plurality of feeding conveyor chains arranged side by side and running synchronously. Each feeding conveyor chain is driven to rotate by a servo motor. A number of positioning card baffles are evenly spaced on each feeding conveyor chain, and the positioning card baffles at the same position are arranged on the same straight line.

[0011] Further, in the utility model, the carrier has a bearing plate, and a hoop arc-shaped card slot, a connecting plate positioning slot and three reinforcing rib positioning slots are arranged on the bearing plate.

[0012] Further, in the utility model, at the position of the first robot MIG welder station, clamping and positioning cylinders are also arranged on both sides along the line of the upper-layer carrier conveying mechanism.

[0013] Further, in the utility model, the structures of the carrier lifting mechanism and the carrier lowering mechanism are the same. Each has a lifting platform driven by an oil cylinder, and a power roller is arranged on the lifting platform. The power roller is used to carry and convey the carrier, and clamping and positioning cylinders are also arranged at both ends of the power roller.

[0014] Each loading mechanism of the utility model adopts the servo loading method, which has a high degree of automation, low requirements for operators, can replace professional welders to complete welding, greatly saves labor costs, and the production efficiency is increased from the original 200 pieces / shift to 480 pieces / shift, with an obvious efficiency improvement, and has good practical application and popularization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of the utility model;

[0016] Figure 2 is Figure 1 the enlarged schematic diagram of the structure at K in

[0017] Figure 3 is the structural schematic diagram of the utility model in the main view direction;

[0018] Figure 4 is the structural schematic diagram of the utility model in the top view direction.

[0019] In the figure: 1 - safety fence, 2 - vehicle lifting mechanism, 3 - first robotic MIG welder, 4 - upper vehicle conveying mechanism, 5 - semi-finished welding part flipping mechanism, 6 - second robotic MIG welder, 7 - vehicle lowering mechanism, 8 - lower vehicle conveying mechanism, 9 - locking hoop servo feeding mechanism, 10 - locking hoop workpiece, 11 - first lead screw transverse movement mechanism, 12 - lead screw seat block, 13 - first lifting cylinder, 14 - magnet plate, 15 and 31 - electromagnets, 16 - connecting plate feeding magazine, 17 - stiffener feeding magazine, 18 - negative pressure suction nozzle, 19 - third lead screw transverse movement mechanism, 20 - third lifting cylinder, 21 - second lifting cylinder, 22 - connecting plate flipping cylinder, 23 - second lead screw transverse movement mechanism, 24 - connecting plate lifting cylinder, 25 - stiffener positioning groove, 26 - hoop arc-shaped clamping groove, 27 - connecting plate positioning groove, 28 - power roller, 29 and 30 - clamping and positioning cylinders, 32 - rotating plate, 33 - longitudinal telescopic cylinder, 34 - rotating cylinder, 35 - vehicle, 36 - positioning card baffle, 37 - feeding conveyor chain, 38 - stiffener lifting cylinder. Detailed implementation manners

[0020] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0021] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "install", "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] See Figures 1 to 4, the utility model is an automatic welding production line system for a locking hoop, which includes an upper carrier conveying mechanism 4 and a lower carrier conveying mechanism 8. A number of carriers 35 are transported on the upper carrier conveying mechanism and the lower carrier conveying mechanism. Further, in the utility model, the carrier has a bearing plate, and on the bearing plate, there are provided a hoop arc-shaped clamping groove 26, a connecting plate positioning groove 27 and three reinforcing rib positioning grooves 25. At the head and tail ends of the upper carrier conveying mechanism and the lower carrier conveying mechanism respectively, there are provided a carrier lifting mechanism 2 and a carrier lowering mechanism 7. The carrier lifting mechanism lifts the carrier on the lower carrier conveying mechanism and transfers it to the upper carrier conveying mechanism, and the carrier lowering mechanism lowers the carrier on the upper carrier conveying mechanism and transfers it to the lower carrier conveying mechanism; above the head end of the upper carrier conveying mechanism, there is provided an electromagnet transfer mechanism, and beside the outside of the electromagnet transfer mechanism, there is provided a locking hoop servo loading mechanism 9. Behind the electromagnet transfer mechanism, there are successively provided a connecting plate servo loading mechanism, a reinforcing rib servo loading mechanism, a first robot MIG welder 3, a semi-finished welded part flipping mechanism 5 and a second robot MIG welder 6. Among them, the first robot MIG welder, the semi-finished welded part flipping mechanism and the second robot MIG welder are all arranged on one side along the line of the upper carrier conveying mechanism, and the connecting plate servo loading mechanism and the reinforcing rib servo loading mechanism are both arranged above the upper carrier conveying mechanism. Further, in the utility model, the upper carrier conveying mechanism and the lower carrier conveying mechanism have the same structure, and each has a conveying frame. At the same height on the conveying frame, three conveying chains or conveying belts are arranged side by side, and the conveying chains or conveying belts are driven by a servo motor to run in a cycle.

[0023] Further, in this embodiment, the electromagnet transfer mechanism includes a first lead screw transverse movement mechanism 11 erected above the upper carrier conveying mechanism. The first lead screw transverse movement mechanism is driven by a servo motor. A first lifting cylinder 13 is connected to the first lead screw transverse movement mechanism through a lead screw seat block 12. The first lifting cylinder moves transversely under the drive of the first lead screw transverse movement mechanism together with the lead screw seat block. The piston rod of the first lifting cylinder is arranged downward. A magnet plate 14 is fixedly connected to the lower end of the piston rod of the first lifting cylinder. Three electromagnets 15 are arranged in a triangular shape on the bottom surface of the magnet plate. The three electromagnets are used to adsorb and lock the hoop workpiece 10. Further, in the present utility model, the connecting plate servo feeding mechanism includes a second lead screw transverse movement mechanism 23 erected above the upper carrier conveying mechanism. The second lead screw transverse movement mechanism is driven by a servo motor. A connecting plate flipping cylinder 22 is connected to the second lead screw transverse movement mechanism through a lead screw seat block. The output end of the connecting plate flipping cylinder is connected to a second lifting cylinder 21. A negative pressure suction nozzle 18 is arranged at the piston rod end of the second lifting cylinder. The negative pressure suction nozzle is used to adsorb the connecting plate workpiece. A connecting plate feeding magazine 16 is further arranged beside the outside of the second lead screw transverse movement mechanism. A connecting plate lifting cylinder 24 is arranged in the connecting plate feeding magazine. Further, in the present utility model, the reinforcing rib servo feeding mechanism includes a third lead screw transverse movement mechanism 19 erected above the upper carrier conveying mechanism. The third lead screw transverse movement mechanism is driven by a servo motor. Three third lifting cylinders 20 are simultaneously connected to the third lead screw transverse movement mechanism through lead screw seat blocks. A negative pressure suction nozzle is arranged at the piston rod end of the third lifting cylinder. The negative pressure suction nozzle is used to adsorb the reinforcing rib workpiece. A reinforcing rib feeding magazine 17 corresponding to each of the three third lifting cylinders is arranged beside the outside of the third lead screw transverse movement mechanism. A reinforcing rib lifting cylinder 38 is arranged in each reinforcing rib feeding magazine. Further, in the present utility model, the semi-finished welded part flipping mechanism includes a semi-finished product lifting cylinder. The semi-finished product lifting cylinder is arranged upward and its output end is connected to a longitudinal telescopic cylinder 33. The front end of the piston rod of the longitudinal telescopic cylinder is connected to a rotary cylinder 34. The output end of the rotary cylinder is connected to a rotary plate 32. Two electromagnets 31 are arranged on the rotary plate. The two electromagnets are used to adsorb the end plates at both ends of the hoop workpiece. Further, in the present utility model, the hoop servo feeding mechanism includes a plurality of parallel arranged and synchronously running feeding conveyor chains 37. Each feeding conveyor chain is driven to rotate by a servo motor. A plurality of positioning card baffles 36 are evenly spaced on each feeding conveyor chain. The positioning card baffles at the same position are arranged on the same straight line.

[0024] Further, in this embodiment, at the position of the second-generation automatic welding machine of the first robot, clamping and positioning cylinders 30 are also arranged on both sides along the line of the upper-layer carrier conveying mechanism. Further, in the present utility model, the structures of the carrier lifting mechanism and the carrier lowering mechanism are the same, each having a lifting table driven by an oil cylinder, and power rollers 28 are arranged on the lifting table. The power rollers are used to carry and convey the carriers, and clamping and positioning cylinders 29 are also arranged at both ends of the power rollers.

[0025] As an automated production line system, the working process of the present utility model is as follows:

[0026] The operator completes the feeding operations of the locking hoop workpieces, connecting plates, and stiffeners at the feeding position. Among them: The feeding of the locking hoop workpieces is as follows: Workers place the locking hoop workpieces one by one in the corresponding positions through the positioning card baffle, and as the feeding conveyor chain advances, they move forward one by one according to the set rhythm; The feeding of the connecting plates is to stack the cut connecting plates layer by layer in the connecting plate feeding magazine, and the lower connecting plate lifting oil cylinders lift one by one to lift the connecting plates one by one; The feeding of the stiffeners is basically the same as that of the connecting plates. Only because three stiffeners are fed simultaneously, three stiffener feeding magazines are set, and they are also lifted one by one by the stiffener lifting cylinders for feeding; While the above feeding operations are being carried out, the locking hoop workpieces are transferred to the carrier by an electromagnet and transported forward. Subsequently, the connecting plates and stiffeners are loaded onto the corresponding connecting plate positioning grooves 27 and three stiffener positioning grooves 25 on the carrier step by step by negative pressure suction nozzles. After all the workpieces in the whole group are fed and enter the positioning grooves, the operator confirms the completion of feeding, and the servo mechanism drives and the chain conveyor starts to work. The carrier is positioned by a cylinder at the welding position of the first robot's second-generation automatic welding machine and welded by the second-generation automatic welding machine. After welding is completed, the chain continues to convey to the next process. After the front side of the robot is welded, it is conveyed by the chain to the semi-finished product welding part flipping mechanism. After the carrier is positioned by a cylinder, the longitudinal telescopic cylinder is pushed out, and after the electromagnet adsorbs the workpiece, the semi-finished product lifting cylinder lifts to a safe position, and the rotating cylinder completes the flipping work of the welded part. The semi-finished product lifting cylinder descends and puts the workpiece into the carrier again, and the chain continues to convey. The carrier is transferred to the second robot's second-generation automatic welding station. After the carrier is positioned, the robot starts welding. After welding is completed, the chain continues to convey backward. The carrier will be transferred to the carrier lowering mechanism, and the unloading personnel take down the welded finished product and put it into the finished product placement area to complete the welding work of the product. The carrier lowering mechanism pushes the empty carrier to the lower-layer carrier conveying mechanism and transfers it to the carrier lifting mechanism, where it is lifted to the upper-layer carrier conveying mechanism for cyclic conveying, positions the carrier at the feeding position, feeds again, and works cyclically with the front side welding of the robot to achieve uninterrupted production of the product. The whole process does not require manual participation in moving the workpiece carrier.

[0027] The entire production line of this utility model forms a cyclic and repetitive automated process, and the production efficiency has been greatly improved.

[0028] Each feeding mechanism of this utility model adopts the servo feeding method, with a high degree of automation, low requirements for operators, and can replace professional welders to complete welding, greatly saving labor costs. The production efficiency has been increased from the original 200 pieces / shift to 480 pieces / shift, with an obvious efficiency improvement, and has good practical application and promotion value.

Claims

1. A locking clamp automatic welding production line system, characterized by: The present invention comprises an upper carrier conveying mechanism and a lower carrier conveying mechanism, on which a plurality of carriers are transported, and a carrier lifting mechanism and a carrier lowering mechanism are respectively arranged at the head and tail ends of the upper carrier conveying mechanism and the lower carrier conveying mechanism, the carrier lifting mechanism lifts the carrier on the lower carrier conveying mechanism and transfers it to the upper carrier conveying mechanism, and the carrier lowering mechanism lowers the carrier on the upper carrier conveying mechanism and transfers it to the lower carrier conveying mechanism; an electromagnet is arranged above the head end of the upper carrier conveying mechanism A locking clamp servo feeding mechanism is arranged on the outside of the electromagnet transfer mechanism, and a connecting plate servo feeding mechanism, a reinforcing rib servo feeding mechanism, a first robot two-guard welding machine, a semi-finished weldment flipping mechanism and a second robot two-guard welding machine are arranged in sequence behind the electromagnet transfer mechanism, wherein the first robot two-guard welding machine, the semi-finished weldment flipping mechanism and the second robot two-guard welding machine are all arranged on one side along the upper carrier conveying mechanism, and the connecting plate servo feeding mechanism and the reinforcing rib servo feeding mechanism are both arranged above the upper carrier conveying mechanism.

2. The locking clamp automatic welding production line system according to claim 1 is characterized in that: The upper carrier conveying mechanism and the lower carrier conveying mechanism have the same structure, and each has a conveying frame. Three conveying chains or conveying belts are arranged side by side at the same height on the conveying frame. The conveying chains or conveying belts are driven by a servo motor to circulate.

3. The locking clamp automatic welding production line system according to claim 1 is characterized in that: The electromagnet transfer mechanism includes a first screw transverse movement mechanism mounted above the upper carrier conveying mechanism, the first screw transverse movement mechanism is driven by a servo motor, the first screw transverse movement mechanism is connected to a first lifting cylinder through a screw seat block, the first lifting cylinder performs transverse movement together with the screw seat block under the drive of the first screw transverse movement mechanism, the piston rod of the first lifting cylinder is arranged downward, and the lower end of the piston rod of the first lifting cylinder is fixedly connected to a magnet plate, and three electromagnets are arranged in a triangular shape on the bottom surface of the magnet plate, and the three electromagnets are used to adsorb and lock the clamp workpiece.

4. The locking clamp automatic welding production line system according to claim 1 is characterized in that: The connecting plate servo feeding mechanism includes a second screw transverse movement mechanism mounted above the upper carrier conveying mechanism, the second screw transverse movement mechanism is driven by a servo motor, a connecting plate flipping cylinder is connected to the second screw transverse movement mechanism through a screw seat block, the output end of the connecting plate flipping cylinder is connected to a second lifting cylinder, a negative pressure suction nozzle is arranged on the end of the piston rod of the second lifting cylinder, and the negative pressure suction nozzle is used to adsorb the connecting plate workpiece; a connecting plate feeding magazine is also arranged on the outer side of the second screw transverse movement mechanism, and a connecting plate lifting cylinder is arranged in the connecting plate feeding magazine.

5. The locking clamp automatic welding production line system according to claim 1 is characterized in that: The reinforcement servo feeding mechanism includes a third screw transverse movement mechanism mounted above the upper carrier conveying mechanism, the third screw transverse movement mechanism is driven by a servo motor, and the third screw transverse movement mechanism is simultaneously connected to three third lifting cylinders through a screw seat block, and a negative pressure suction nozzle is arranged on the end of the piston rod of the third lifting cylinder, and the negative pressure suction nozzle is used to adsorb the reinforcement workpiece; a reinforcement feeding magazine is arranged on the outer side of the third screw transverse movement mechanism corresponding to each of the three third lifting cylinders, and a reinforcement lifting cylinder is provided in each reinforcement feeding magazine.

6. The locking clamp automatic welding production line system according to claim 1 is characterized in that: The semi-finished weldment flipping mechanism includes a semi-finished product lifting cylinder, which is arranged upward and has an output end connected to a longitudinal telescopic cylinder. The front end of the piston rod of the longitudinal telescopic cylinder is connected to a rotating cylinder, and the output end of the rotating cylinder is connected to a rotating plate. Two electromagnets are arranged on the rotating plate, and the two electromagnets are used to adsorb and lock the end plates at both ends of the clamp workpiece.

7. The locking clamp automatic welding production line system according to claim 1 is characterized in that: The locking clamp servo feeding mechanism includes a plurality of feeding conveying chains arranged side by side and running synchronously, each feeding conveying chain is driven to rotate by a servo motor, and a plurality of positioning card baffles are evenly spaced on each feeding conveying chain, and the positioning card baffles at the same position are arranged on the same straight line.

8. The locking clamp automatic welding production line system according to claim 1 is characterized in that: The carrier has a bearing plate, on which a clamp arc-shaped slot, a connection plate positioning slot and three reinforcing rib positioning slots are arranged.

9. The locking clamp automatic welding production line system according to claim 1 is characterized in that: Located at the first robot second welding machine station, clamping and positioning cylinders are also arranged on both sides along the upper carrier conveying mechanism.

10. The locking clamp automatic welding production line system according to claim 1, characterized in that: The structures of the carrier lifting mechanism and the carrier lowering mechanism remain the same, and each has a lifting platform driven by an oil cylinder, on which a power roller is arranged, and the power roller is used to carry and transport the carrier, and clamping and positioning cylinders are also arranged at both ends of the power roller.

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