A wire mesh opening device

Abstract

A kind of welding net opening equipment, including rack, unpowered roller is rotatably installed on rack, two left and right limiting plates distributed left and right are installed above roller, two front and rear direction synchronous belt machines are installed on the both sides of discharge end on rack, synchronous belt machine is driven by servo motor, guide rail is fixedly connected on the machine box of synchronous belt machine, sliding block is fixedly connected on the synchronous belt of synchronous belt machine, material dragging cylinder is hinged to sliding block in the direction of material tail, one end of material dragging V-shaped arm is hinged to sliding block, near middle part is hinged to the cylinder rod of material dragging cylinder, material dragging grab hook is fixedly connected to the other end of material dragging V-shaped arm, four lower blades are fixedly installed between roller near discharge end, oil cylinder is fixedly connected on punching net frame, upper blade corresponding to lower blade is fixed on the cylinder rod of oil cylinder.This opening equipment can carry out opening to welding.

Description

Technical Field

[0001] This invention relates to equipment for deep processing of welded wire mesh reinforcing bars used in construction, and particularly to a hole-opening device for welded wire mesh reinforcing bars, belonging to the field of reinforcing bar technology. Background Technology

[0002] With the gradual advancement of industrialization in China's construction industry, standardized, modular, and related technologies and systems are being implemented, leading to the emergence of prefabricated buildings and various precast components. To meet diverse on-site requirements, corresponding precast steel reinforcement products and processing equipment have been developed. Prefabricated buildings include prefabricated concrete structures, prefabricated steel structures, and prefabricated wood structures. Prefabricated concrete structures are mainly used in residential buildings, office buildings, school buildings, hospitals, high-speed railways, etc., and are currently the most widely used type of prefabricated building structure. Welded wire mesh reinforcement is an important component of prefabricated concrete structures. Welded wire mesh is made by arranging cold-rolled ribbed steel bars longitudinally and transversely at certain intervals according to the requirements of different building components, then welding or binding them together to form a "mesh." This mesh is then welded using a welding machine. After manufacturing, the mesh may require further processing depending on the application process, such as perforation and bending. Perforation is the most common operation. For example, a common perforation size is 1100×800mm. Perforation is used to accommodate the process requirements of components such as building columns. Currently, there are two main methods for forming perforations in welded wire mesh: one is using a welding machine that can directly create perforations, forming them directly after the steel bars are placed during welding. This method is technologically advanced but requires a large investment, and many existing traditional welding machines cannot be upgraded, making it uneconomical for companies using traditional machines; the other method is manual perforation, which is the main method for producing welded wire mesh using traditional welding machines. After the welded wire mesh is welded into shape by the welding machine, workers use a plasma cutter to cut the reinforcing bars at designated locations according to the component requirements. In practice, to improve efficiency, multiple welded wire meshes are usually stacked together before cutting. This results in insufficient cutting precision, difficulty in cleaning the cut reinforcing bars, and the high temperature can affect the strength of the reinforcing bars. Molten steel slag adhering to the welded wire mesh below also affects product quality. Moreover, when loading welded wire mesh without openings, to ensure the utilization rate of the wagon, a wire mesh flipping machine is added to the wire mesh output end of the welding machine. The flipping machine rotates the first welded wire mesh 180°. After the second welded wire mesh comes over, the first welded wire mesh, which has been flipped 180°, is then placed on top of the second welded wire mesh. In this way, the transverse bars of the two welded wire meshes are placed opposite each other in a staggered manner, which can reduce the stacking height and improve the utilization rate of the wagon. However, if a plasma cutter is used to open the openings, the reinforcing bars cannot be stacked in the above way and can only be stacked neatly and uniformly. This will reduce the utilization rate of the wagon and increase the difficulty of loading, which is time-consuming and labor-intensive. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned problems existing in current wire mesh opening technology and to provide a wire mesh opening device.

[0004] To achieve the objective of this invention, the following technical solution is adopted: A wire mesh perforation device includes a frame, on which a non-powered roller conveyor is rotatably mounted. Two left and right limiting plates are installed above the roller conveyor, detachably and fixedly connected to the frame. A material tail detection switch is installed on the frame at the feeding end, and a material head detection switch is installed on the frame in front of the material level detection switch. Two synchronous belt conveyors in the front-rear direction are installed on both sides of the discharge end of the frame. The synchronous belt conveyors are driven by servo motors. A guide rail is fixedly connected to the housing of the synchronous belt conveyor. A slider is fixedly connected to the synchronous belt of the synchronous belt conveyor, and the slider is slidably mounted on the guide rail. A material dragging cylinder is hinged to the slider in the material tail direction. One end of a material dragging V-shaped arm is hinged to the slider, and near the middle, it is hinged to the cylinder rod of the material dragging cylinder. A material dragging hook is fixedly connected to the other end of the material dragging V-shaped arm. The lower end face of the material dragging hook has a V-shaped opening, and the bottom of the V-shape... The device has a groove; a lower blade assembly fixing plate is fixedly installed between the rollers near the discharge end, the lower blade assembly fixing plate has a rectangular hole in the middle, and four lower blades are fixedly connected to the periphery of the rectangular hole; a punching frame is fixedly installed above the lower blade assembly fixing plate, and a vertically oriented hydraulic cylinder is fixedly connected to the punching frame. The hydraulic cylinder is connected to a hydraulic system, and an upper blade assembly fixing plate is fixedly connected to the cylinder rod. The upper blade assembly fixing plate has upper blades that correspond vertically to the lower blades. Multiple guide sleeves are fixedly installed on the punching frame, and multiple guide posts are fixedly installed on the upper blade assembly fixing plate. The guide posts are located inside the guide sleeves. Multiple guide rods are fixedly connected to the U-shaped pressure plate. The guide rods slide vertically through the guide cylinders on the upper blade assembly fixing plate. A limit nut is screwed onto the guide rod at the top of the guide cylinder, and a spring is threaded through the guide rod at the bottom of the guide cylinder. The spring is compressed when the pressure plate moves upward; an upper limit detection switch and a lower limit detection switch for the hydraulic cylinder are installed on the upper blade assembly fixing plate.

[0005] A waste conveyor belt is installed below the rectangular hole;

[0006] The servo motor, each cylinder, each detection switch, and the hydraulic cylinder are all connected to the controller.

[0007] Furthermore, a pusher cylinder is hinged to the slider in the direction of the material head. One end of the pusher V-arm is hinged to the slider and near the middle to the cylinder rod of the pusher cylinder. A pusher hook is fixedly connected to the other end of the pusher V-arm.

[0008] Furthermore, the upper blade is in multiple sets, each set consisting of two blades that are longitudinally or laterally corresponding, and the lower ends of the multiple sets of blades are located at at least two different heights.

[0009] Furthermore, multiple rollers are rotatably mounted on the slider, with rollers located on the guide rail, and rollers on both the upper and lower parts of the guide rail.

[0010] Furthermore, a slider zero-position detection switch is installed on the chassis of the synchronous belt machine.

[0011] Furthermore, a slide rail is fixedly installed on the frame, and a material head detection switch is fixedly connected to a sliding block. The sliding block is pressed against the slide rail by a set screw.

[0012] Furthermore, a V-shaped baffle is fixedly installed above the waste conveyor belt.

[0013] Furthermore, multiple fixing screws are fixedly installed on both sides of the frame, and the limiting plate slides left and right through the holes on the fixing screws, and the two sides of the limiting plate are locked with nuts.

[0014] The positive and beneficial technical effects of this invention are as follows: This hole-opening device can open holes for welding, solving the related problems caused by manual hole opening. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one orientation of the present invention.

[0016] Figure 2 This is a schematic diagram from another angle of the present invention.

[0017] Figure 3 This is a schematic diagram of two belt conveyors driving a slider device.

[0018] Figure 4 yes Figure 3 A partially enlarged schematic diagram.

[0019] Figure 5 This is an enlarged schematic diagram of the material head detection switch.

[0020] Figure 6 This is a schematic diagram of the upper blade fixing plate and the pressure plate.

[0021] Figure 7 A schematic diagram of the lower blade fixing plate.

[0022] Figure 8 This is a schematic diagram of equipment installation on a steel frame.

[0023] Figure 9 This is a schematic diagram of the baffle plate above the waste conveyor belt. Detailed Implementation

[0024] To more fully explain the implementation of the present invention, implementation examples are provided. These implementation examples are merely illustrative of the present invention and do not limit the scope of the present invention.

[0025] The invention will be further explained in detail with reference to the accompanying drawings, in which the following references are made: 1: frame; 2: roller conveyor; 3: limit plate; 4: synchronous belt conveyor; 5: servo motor; 6: punching frame; 7: hydraulic cylinder; 8: upper blade fixing plate; 9: waste conveyor belt; 10: material tail detection switch; 11: material head detection switch; 12: dragging hook; 1201: V-shaped opening; 1202: groove; 13: slider zero-position detection switch; 14: guide rail; 15: slider; 16: roller; 17: ... 18: Material dragging V-arm; 19: Material dragging cylinder; 20: Material pushing V-arm; 21: Material pushing cylinder; 22: Material pushing hook; 23: Synchronous belt drive shaft; 24: Sliding block; 25: Upper blade; 26: Guide post; 27: Pressure plate; 28: Guide rod; 29: Spring; 30: Guide cylinder; 31: Limit nut; 32: Lower blade fixing plate; 33: Lower blade; 34: Guide sleeve; 35: Upper limit detection switch for hydraulic cylinder; 36: Slide rail; 37: Material stop plate; 38: Fixing screw.

[0026] All detection switches in this application can be proximity switches. For proximity switches that detect materials, the material itself can serve as the proximity body. For proximity switches that detect the position of the hydraulic cylinder, the proximity body can be installed at the upper and lower limits. For proximity switches that detect the zero position of the slider, the proximity body is fixedly installed on the slider.

[0027] As attached Figure 1 , Figure 2 As shown, this equipment includes a frame 1, on which a non-powered roller conveyor 2 is installed. During operation, this equipment is installed after a wire mesh welding machine. Currently, the welding machine conveys the wire mesh backward to the material tail detection switch 11 during discharge. Two left and right limit plates are installed above the roller conveyor. Multiple fixing screws 37 are fixedly installed on both sides of the frame. The limit plates slide left and right through holes on the fixing screws, and both sides of the limit plates are locked with nuts. By adjusting the position of the limit plates on the screws, different widths of wire mesh can be accommodated.

[0028] A material tail detection switch 10 is installed on the frame at the feed end, and a material head detection switch 11 is installed on the frame in front of the material level detection switch. The material head detection switch 11 is fixedly connected to the sliding block 23. A slide rail 35 is fixedly installed on the frame, and the sliding block 23 is pressed against the slide rail by a set screw. The position of the material head detection switch can be adjusted to accommodate welding mesh of different lengths.

[0029] A gantry-shaped punching frame 6 is located above the rear of the machine frame. A lower blade assembly fixing plate 31 is fixedly installed between the rollers near the discharge end. The lower blade assembly fixing plate has a rectangular hole in the middle, and four lower blades 32 are fixedly connected to the periphery of the rectangular hole. A vertically oriented hydraulic cylinder 7 is fixedly connected to the punching frame. The hydraulic cylinder 7 is connected to a hydraulic system. An upper blade assembly fixing plate 8 is fixedly connected to the cylinder rod of the hydraulic cylinder. Upper blades 24, which correspond to the lower blades, are fixed on the upper blade assembly fixing plate. There are multiple sets of upper blades. Each set of blades consists of two blades that correspond to each other in the longitudinal or transverse direction. Each set of blades corresponds to one steel bar. In this embodiment, there are four sets of blades in both the transverse and longitudinal directions. The lower ends of the four sets of blades are located at at least two different heights. This way, the upper blades do not contact the steel bars simultaneously during punching, which helps to reduce the load on the hydraulic cylinder. Multiple guide sleeves 33 are fixedly installed on the punching frame, and multiple guide posts 25 are fixedly installed on the upper blade assembly fixing plate. The guide posts are located inside the guide sleeves. Multiple guide rods 27 are fixedly connected to the U-shaped pressure plate 26. The guide rods slide up and down through the guide cylinder 29 on the upper blade assembly fixing plate. A limit nut 30 is screwed onto the guide rod at the upper part of the guide cylinder. A spring 28 is installed on the guide rod below the guide cylinder. The spring is compressed when the pressure plate 26 moves upward. An upper limit detection switch and a lower limit detection switch for the hydraulic cylinder are installed on the upper blade assembly fixing plate. 34 is the upper limit detection switch for the hydraulic cylinder, and the opposite of the upper limit detection switch is the lower limit detection switch for the hydraulic cylinder.

[0030] Two synchronous belt conveyors are installed on both sides of the discharge end of the frame, running in a front-to-back direction. These synchronous belt conveyors are existing equipment, typically including a rotating driving pulley and a rotating driven pulley. The synchronous belt is wound around the driving and driven pulleys. In this embodiment, the two driving pulleys are fixedly connected to the synchronous belt conveyor drive shaft 22, which is driven by a servo motor 5. Guide rails 14 are fixedly connected to the inner and outer sides of the synchronous belt conveyor's casing, and sliders 1 are fixedly connected to the synchronous belt. 5. Multiple rollers 16 are rotatably mounted on the slider. The rollers are located on the guide rail. There are rollers on the upper and lower parts of the guide rail. The slider 15 is slidably mounted on the guide rail 14 through the rollers. A material dragging cylinder 16 is hinged to the slider in the direction of the material tail. One end of the material dragging V-shaped arm 17 is hinged to the slider and near the middle is hinged to the cylinder rod of the material dragging cylinder. A material dragging hook 12 is fixedly connected to the other end of the material dragging V-shaped arm. The material dragging hook has a V-shaped opening 1201 on the lower end face and a groove 1202 is opened at the bottom of the V-shape. This design allows for some error in the positioning of the transverse reinforcing bars. The V-shaped opening ensures the reinforcing bars enter the groove. A pusher cylinder 20 is hinged to the slider in the direction of the material head. One end of the pusher V-shaped arm 19 is hinged to the slider, and near the middle, it is hinged to the cylinder rod of the pusher cylinder. A pusher hook 21 is fixedly connected to the other end of the pusher V-shaped arm 19. The pusher hook is the same as the drag hook. A slider zero-position detection switch 13 is installed on the chassis of the synchronous belt conveyor. The slider zero-position detection switch is used to detect the zero position of the slider, which can eliminate the cumulative error during the operation of the servo motor. A waste conveyor belt 9 is installed below the rectangular hole of the lower cutter group fixing plate. A V-shaped baffle plate 36 is fixedly installed above the waste conveyor belt. The V-shaped baffle plate 36 ensures that the cut reinforcing bars reliably fall onto the waste conveyor belt. The servo motor, each cylinder, each detection switch, and the hydraulic cylinder are all connected to the controller.

[0031] This equipment is placed between the welding machine and the flipping machine. After the welding machine delivers the welded wire mesh to the designated position, because the specifications of each type of wire mesh are fixed, the slider reaches the zero position. According to the specifications of the wire mesh, the servo motor drives the slider to the set position. At this set position, the material-dragging hook can reliably guide the transverse reinforcing bars into the groove. The material head detection switch and the material tail detection switch receive signals simultaneously. The two material-dragging V-shaped arms, driven by the material-dragging cylinder, lower the hooks, and the reinforcing bars enter the groove through the V-shaped opening, hooking the transverse reinforcing bars of the wire mesh. The servo motor drives the belt conveyor to move towards the punching position. According to the specifications of the wire mesh, the servo motor moves to a punching position. After the servo motor reaches the position, the hydraulic system starts working, the oil cylinder extends, and drives the upper blade assembly to move downward. At this time, the pressure plate first contacts the wire mesh. The cylinder continues downward, and the pressure plate, provided by a spring, holds the welded wire mesh in place. The cylinder continues until the upper cutter assembly cuts the rebar, and the waste falls into the conveyor, which transports it to the designated position. After the lower limit switch of the cylinder detects a signal, the dragging cylinder returns, the grab hook moves upward to release the welded wire mesh, and the servo motor carries the grab hook to the next dragging position. The dragging cylinder drives the grab hook downward to hook the welded wire mesh, and the cylinder returns. After the upper limit switch of the cylinder receives a signal, the servo motor runs, moving the welded wire mesh to the next punching position. This process is repeated until all holes are punched. At this point, the dragging grab hook moves upward, the servo motor moves forward to the end of the welded wire mesh, the pushing grab hook moves downward, the servo motor retracts, and the welded wire mesh is pushed out of the equipment to the flipping process. The punching is complete, the pushing grab hook moves upward, and the servo motor returns to the zero position, waiting for the next piece of welded wire mesh. The waste conveyor transports the fallen rebar to the designated position.

[0032] After a detailed description of the embodiments of the present invention, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims

1. A method for perforating welded wire mesh, wherein the method employs a welded wire mesh perforation device, the welded wire mesh perforation device comprising a frame, a non-powered roller conveyor rotatably mounted on the frame, and two left and right limiting plates distributed horizontally above the roller conveyor, the limiting plates being detachably and fixedly connected to the frame, characterized in that: A material tail detection switch is installed on the frame at the feeding end, and a material head detection switch is installed on the frame in front of the material tail detection switch. Two synchronous belt conveyors are installed on both sides of the discharge end of the frame, running in the forward and backward directions. The synchronous belt conveyors are driven by servo motors. Guide rails are fixedly connected to the chassis of the synchronous belt conveyors, and sliders are fixedly connected to the synchronous belts of the synchronous belt conveyors. The sliders are slidably mounted on the guide rails. A material dragging cylinder is hinged to the slider in the direction of the material tail. One end of the material dragging V-shaped arm is hinged to the slider, and near the middle, it is hinged to the cylinder rod of the material dragging cylinder. A material dragging hook is fixedly connected to the other end of the material dragging V-shaped arm. The material dragging hook has a V-shaped opening on its lower end face, and a groove is formed at the bottom of the V-shape. A lower cutter assembly fixing plate is fixedly installed between the roller conveyors near the discharge end. The lower cutter assembly fixing plate has a rectangular shape in the middle. Four lower blades are fixedly connected to the periphery of a rectangular hole. A punching frame is fixedly installed above the lower blade assembly fixing plate. A vertically oriented hydraulic cylinder is fixedly connected to the punching frame and connected to a hydraulic system. An upper blade assembly fixing plate is fixedly connected to the cylinder rod of the hydraulic cylinder. Upper blades corresponding to the lower blades are fixedly installed on the upper blade assembly fixing plate. Multiple guide sleeves are fixedly installed on the punching frame. Multiple guide posts are fixedly installed on the upper blade assembly fixing plate. The guide posts are located inside the guide sleeves. Multiple guide rods are fixedly connected to a U-shaped pressure plate. The guide rods slide vertically through the guide cylinders on the upper blade assembly fixing plate. Limit nuts are screwed onto the guide rods at the top of the guide cylinders. Springs are threaded through the guide rods at the bottom of the guide cylinders. The springs are compressed when the pressure plate moves upward. Upper limit detection switches and lower limit detection switches for the hydraulic cylinders are installed on the upper blade assembly fixing plate. The upper blades are in multiple sets, each set consisting of two blades that are longitudinally or laterally corresponding, and the lower ends of the multiple sets of upper blades are located at at least two different heights; A waste conveyor belt is installed below the rectangular hole; A pusher cylinder is hinged to the slider in the direction of the material head. One end of the pusher V-arm is hinged to the slider and near the middle is hinged to the cylinder rod of the pusher cylinder. A pusher hook is fixedly connected to the other end of the pusher V-arm. The servo motor, each cylinder, each detection switch, and the hydraulic cylinder are all connected to the controller. The method for opening holes in welded wire mesh is as follows: The wire mesh perforation equipment is placed between the wire mesh welding machine and the wire mesh flipping machine. After the wire mesh welding machine delivers the welded wire mesh to the designated position, the slider reaches the zero position. According to the specifications of the wire mesh, the servo motor drives the slider to the set position. At this set position, the material-dragging hook causes the transverse reinforcing bars to enter the groove. The material head detection switch and the material tail detection switch receive signals simultaneously. Driven by the material-dragging cylinder, the two material-dragging V-shaped arms lower the material-dragging hooks, and the reinforcing bars enter the groove through the V-shaped opening, hooking the transverse reinforcing bars of the wire mesh. The servo motor drives the synchronous belt to move towards the punching position. After the servo motor reaches the position, the hydraulic system starts working. The oil cylinder extends, driving the upper blade to move downward. At this time, the pressure plate first contacts the wire mesh. The oil cylinder continues to move downward, and the pressure plate is provided with a certain pressure by the spring to press the wire mesh. The oil cylinder continues to move downward until the upper blade... The steel bars are punched through, and the waste falls onto the waste conveyor belt, which transports it to a designated location. Once the lower limit switch of the hydraulic cylinder detects a signal, the dragging cylinder returns, and the dragging hook releases the welded mesh upwards. The servo motor then moves the dragging hook to the next dragging position. The dragging cylinder drives the dragging hook downwards to hook the welded mesh, and the hydraulic cylinder returns. Once the upper limit switch of the hydraulic cylinder receives a signal, the servo motor runs, moving the welded mesh to the next punching position. This process is repeated until all holes are punched. At this point, the dragging hook moves upwards, the servo motor moves forward to the end of the welded mesh, the pushing hook moves downwards, and the servo motor retracts, pushing the welded mesh out of the mesh punching equipment to the flipping process. Once the punching is complete, the pushing hook moves upwards, the servo motor returns to zero, and the machine awaits the next piece of welded mesh. The waste conveyor belt then transports the fallen steel bars to the designated location.

2. The method for opening holes in a welded wire mesh according to claim 1, characterized in that: Multiple rollers are mounted on the slider and are located on the guide rail, which has rollers at both the top and bottom.

3. The method for opening holes in a welded wire mesh according to claim 1, characterized in that: A slider zero-position detection switch is installed on the chassis of the synchronous belt machine.

4. The method for opening holes in welded wire mesh according to claim 1, characterized in that: A slide rail is fixedly installed on the frame, and the material head detection switch is fixedly connected to the sliding block. The sliding block is pressed against the slide rail by a set screw.

5. The method for opening holes in welded wire mesh according to claim 1, characterized in that: A V-shaped baffle is fixedly installed above the waste conveyor belt.

6. The method for opening holes in a welded wire mesh according to claim 1, characterized in that: Multiple fixing screws are fixedly installed on both sides of the frame. The limiting plate slides through the holes and passes through the fixing screws. The two sides of the limiting plate are locked with nuts.

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