A steel bar feeding rotary clamping mechanism

Abstract

The present invention discloses a steel bar feeding rotary clamping mechanism, comprising a frame, a steel bar cage binding unit, a stirrup material box for stacking stirrup groups, and a bearing platform for carrying the stirrup material box, the steel bar cage binding unit and the bearing platform are both connected to the frame, and a plurality of longitudinal bars are inserted into the stirrup material box; the steel bar cage binding unit comprises a stirrup moving assembly for moving the stirrups on the stirrup material box to the binding position one by one, and a binding robot for binding the stirrups on the binding position with the longitudinal bars, and further comprises a clamping assembly for clamping the longitudinal bars, the clamping assembly is arranged on the bearing platform, the clamping assembly is arranged adjacent to the stirrup material box, and the stirrup material box and the clamping assembly are arranged in sequence along the transmission direction of the longitudinal bars. The above steel bar feeding rotary clamping mechanism has a reasonable structure, and when the stirrup material box is replaced, the tail end of the longitudinal bars can be fixed to avoid instability of the steel bar cage.

Description

Technical Field

[0001] The invention relates to a clamping mechanism, in particular to a steel bar feeding rotary clamping mechanism. Background Art

[0002] In the prior art, the automatic binding device for steel cages includes a frame, a steel cage binding unit connected to the frame, and a stirrup box for stacking stirrup groups, wherein a plurality of longitudinal bars are inserted into the stirrup box; the steel cage binding unit includes a stirrup moving assembly for moving the stirrups on the stirrup box to the binding position one by one, and a binding robot for binding the stirrups on the binding position with the longitudinal bars, and the stirrup box, the stirrup moving assembly and the binding robot are arranged in sequence along the conveying direction of the longitudinal bars.

[0003] The above-mentioned automatic binding device for the steel cage can realize automatic loading of stirrups and automatic binding of the steel cage. However, when the stirrups on the stirrup box are out of material, it is necessary to remove the current stirrup box and replace it with a stirrup box full of stirrups. At this time, the tail end of the longitudinal reinforcement is not fixed, the steel cage is unstable, and the full stirrup box is difficult to align with the longitudinal reinforcement when it is put on the line. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects in the prior art and provide a steel bar feeding rotary clamping mechanism, which can fix the tail end of the longitudinal bar when replacing the stirrup box to avoid instability of the steel bar cage.

[0005] In order to achieve the above technical effects, the technical solution of the present invention is as follows: a steel bar feeding rotary clamping mechanism, including a clamping assembly, the clamping assembly includes a fixed clamping seat, a clamping frame arranged on the clamping seat, a movable arm arranged on the clamping frame, and a plurality of clamps connected to the movable arm, and the plurality of clamps correspond to the longitudinal bars of the steel cage one by one; the clamping assembly has two working positions, in the first working position, the clamp clamp clamps and fixes the longitudinal bars; in the second working position, the clamp clamp is separated from the longitudinal bars to avoid interference with the moving path of the stirrups. Through such a design, the purpose of clamping and fixing the tail end of the longitudinal bars can be achieved in the first working position, and each longitudinal bar of the steel cage can be clamped and fixed, and the second working position does not affect the feeding of the stirrups.

[0006] The preferred technical solution is that the clamping components are provided in two groups, and the two groups of the clamping components are respectively arranged on both sides of the steel cage. Such a design is a further limitation of the above solution.

[0007] The preferred technical solution is that the movable arm is movably connected to the clamping frame, the movable arm includes an upper movable arm, a lower movable arm and an intermediate movable arm, and a movable arm driving assembly for driving the upper movable arm, the lower movable arm and the intermediate movable arm to move closer to or away from each other is provided between the upper movable arm, the lower movable arm, the intermediate movable arm and the clamping frame. Through such a design, the movable arm can be separated from the longitudinal reinforcement, thereby driving the movement of the clamping pliers and being spaced from the longitudinal reinforcement.

[0008] The preferred technical solution is that the upper moving arm and the lower moving arm are slidably connected to the clamping frame, the sliding directions of the upper moving arm and the lower moving arm are set up and down, the middle moving arm is slidably set to the lower moving arm, and the sliding direction of the middle moving arm is set horizontally; the middle moving arm is slidably connected to the clamping frame, and the sliding direction of the middle moving arm is set horizontally. Such a design is a further limitation of the above solution.

[0009] The preferred technical solution is that the moving arm driving assembly includes a first four-link, a moving arm cylinder horizontally arranged in the direction of piston rod extension and retraction, a vertically arranged upper push rod, a lower push rod and a horizontally arranged transverse tie rod, the cylinder body of the moving arm cylinder is fixedly connected to the clamping frame, the four corners of the first four-link are connected to the piston rod of the moving arm cylinder, one end of the upper push rod, one end of the transverse tie rod and one end of the lower push rod in sequence, the other end of the upper push rod is hinged to the upper moving arm, the other end of the transverse tie rod is hinged to the middle moving arm, and the other end of the lower push rod is hinged to the lower moving arm. With such a design, the upper moving arm, the lower moving arm and the middle moving arm can be synchronously moved closer or farther away.

[0010] The movable arms are provided with two groups, and the two groups of movable arms are respectively arranged on both sides of the clamping frame. Through such a design, at least two groups of clamping pliers can be provided to improve the stability of clamping the longitudinal reinforcement.

[0011] The preferred technical solution is to further include a linkage rod, the two ends of which are respectively hinged to the two first four-link rods, and the piston rod of the movable arm cylinder is fixedly connected to the linkage rod. Through such a design, only one movable arm cylinder is needed to realize the synchronous operation of the two sets of movable arms, thereby reducing the production cost.

[0012] The preferred technical solution is that the clamping pliers include a pliers body, a second four-link rod and a clamping cylinder for driving the pliers body to clamp or open, the cylinder body of the clamping cylinder is fixedly connected to the movable arm, and the opposite ends of the second four-link rod are respectively connected to the piston rod of the clamping cylinder and the pliers body. Through such a design, the opening or closing of the pliers body is achieved.

[0013] The preferred technical solution is that the clamping pliers are provided in two groups, and the two groups of clamping pliers are respectively provided on both sides of the movable arm. Through such a design, multiple groups of clamping pliers are provided to improve the stability of the longitudinal reinforcement clamping.

[0014] The preferred technical solution is that the clamping frame is rotatably connected to the clamping seat, the axis of the rotation axis of the clamping frame is vertically arranged, and a clamping rotation assembly for driving the clamping frame to rotate is arranged between the clamping frame and the clamping seat. With such a design, the clamping assembly can be rotatably arranged without affecting the stirrup moving assembly to grab the stirrup and move to the binding position.

[0015] The advantages and beneficial effects of the present invention are as follows: the structure of the steel bar feeding rotary clamping mechanism of the present invention is reasonable, and the purpose of clamping and fixing the tail end of the longitudinal bar is achieved by setting a clamping component, and the feeding of the stirrups is not affected by rotating the clamping component; compared with the prior art, the instability of the steel bar cage when replacing the stirrup box is avoided, and it is also convenient for the new stirrup box to be connected to the longitudinal bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of Embodiment 1 of the steel bar feeding rotary clamping mechanism of the present invention;

[0017] Figure 2 It is a schematic diagram of the clamping state of the clamping assembly of the steel bar feeding rotary clamping mechanism embodiment 1 of the present invention;

[0018] Figure 3 It is a schematic diagram of the open state of the clamping assembly of the steel bar feeding rotary clamping mechanism embodiment 1 of the present invention;

[0019] Figure 4 It is a structural schematic diagram of a movable arm driving assembly of Embodiment 1 of a steel bar feeding and rotating clamping mechanism of the present invention;

[0020] Figure 5 1 is a schematic diagram of the structure of the clamping assembly of the steel bar feeding rotary clamping mechanism of the present invention (from another perspective);

[0021] Figure 6 It is a structural schematic diagram of the movable arm driving assembly of Embodiment 1 of the steel bar feeding rotary clamping mechanism of the present invention (without the clamping frame);

[0022] Figure 7 It is a schematic diagram of the structure of the clamping frame of the steel bar feeding rotary clamping mechanism of the present invention;

[0023] Figure 8 Schematic diagram of the second four-link structure of embodiment 1 of the steel bar feeding rotary clamping mechanism of the present invention;

[0024] Fig. 9 It is a structural schematic diagram of Embodiment 2 of the steel bar feeding rotary clamping mechanism of the present invention;

[0025] In the figure: 210, clamping seat; 220, clamping frame; 221, longitudinal guide groove; 222, upper clamping guide block; 223, transverse guide groove; 224, lower clamping guide block; 225, middle clamping guide block; 230, movable arm; 231, upper movable arm; 232, lower movable arm; 233, middle movable arm; 234, first roller; 235, second roller; 240, clamping pliers; 241, pliers body; 242, second four-link rod; 2421, fifth articulated shaft; 2422, sixth articulated shaft; 2423, seventh articulated shaft; 2424, eighth articulated shaft; 2425, first 5. Rotating rod; 2426. Sixth rotating rod; 2427. Seventh rotating rod; 2428. Eighth rotating rod; 243. Clamping cylinder; 244. U-shaped rod; 250. Moving arm driving assembly; 251. Moving arm cylinder; 252. Upper push rod; 253. First four-link rod; 2531. First articulated axis; 2532. Second articulated axis; 2533. Third articulated axis; 2534. Fourth articulated axis; 254. Lower push rod; 255. Transverse tie rod; 256. Linkage tie rod; 320. Carrying platform; 410. Stirrup moving assembly; 910. Stirrup material box; b. Longitudinal reinforcement; c. Stirrup. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", "vertical", "top", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] Example 1

[0029] like Figure 1-8As shown, the steel bar feeding and rotating clamping mechanism of Example 1 includes a frame, a steel bar cage binding unit, a stirrup material box 910 for stacking stirrup groups, and a carrying platform 320 for carrying the stirrup material box 910. The steel bar cage binding unit and the carrying platform 320 are both connected to the frame, and a plurality of longitudinal bars are inserted into the stirrup material box 910; the steel bar cage binding unit includes a stirrup moving assembly 410 for moving the stirrups on the stirrup material box 910 to the binding position one by one, and a binding robot for binding the stirrups on the binding position with the longitudinal bars. The stirrup material box 910, the stirrup moving assembly 410 and the binding robot are arranged in sequence along the conveying direction of the longitudinal bars, and also include a clamping assembly for clamping the longitudinal bars. The clamping assembly is arranged on the carrying platform 320, and the clamping assembly is arranged adjacent to the stirrup material box 910. The stirrup material box 910 and the clamping assembly are arranged in sequence along the conveying direction of the longitudinal bars.

[0030] The clamping assembly includes a clamping seat 210 fixedly connected to the supporting platform 320, a clamping frame 220 arranged on the clamping seat 210, a movable arm 230 arranged on the clamping frame 220, and a plurality of clamps 240 connected to the movable arm 230, wherein the plurality of clamps 240 correspond one-to-one to the longitudinal bars of the steel cage.

[0031] The clamping components are provided in two groups, and the two groups of clamping components are arranged on both sides of the steel cage; the clamping frame 220 is rotatably connected to the clamping seat 210, and the axis of the rotation axis of the clamping frame 220 is vertically arranged, and a clamping rotation component for driving the clamping frame 220 to rotate is arranged between the clamping frame 220 and the clamping seat 210.

[0032] The movable arm 230 is movably connected to the clamping frame 220, and the movable arm 230 includes an upper movable arm 231, a lower movable arm 232 and an intermediate movable arm 233. A movable arm driving assembly 250 is arranged between the upper movable arm 231, the lower movable arm 232, the intermediate movable arm 233 and the clamping frame 220, and is used to drive the upper movable arm 231, the lower movable arm 232, the intermediate movable arm 233 to move closer to or away from each other.

[0033] The upper moving arm 231 and the lower moving arm 232 are slidably connected to the clamping frame 220. The sliding directions of the upper moving arm 231 and the lower moving arm 232 are set up and down. The clamping frame 220 is provided with a longitudinal guide groove 221. The longitudinal guide groove 221 is set vertically. The upper moving arm 231 and the lower moving arm 232 are respectively rotatably provided with a first roller 234 that is rollingly connected to the longitudinal guide groove 221. The middle moving arm 233 is relatively movably arranged with the clamping frame 220. The moving direction of the middle moving arm 233 is The clamping frame 220 is fixedly provided with an upper clamping guide block 222 and a lower clamping guide block 224. Both the upper clamping guide block 222 and the lower clamping guide block 224 are provided with a transverse guide groove 223. The direction of the transverse guide groove 223 is horizontally arranged and perpendicular to the conveying direction of the longitudinal rib b. The middle movable arm 233 is rotatably provided with a second roller 235 rollingly connected to the transverse guide groove 223. The middle movable arm 233 is clamped between the upper clamping guide block 222 and the lower clamping guide block 224.

[0034] The movable arm driving assembly 250 includes an upper push rod 252, a lower push rod 254, a cross rod 255 and a first four-link rod 253. The upper push rod 252 is inserted into the upper clamping guide block 222 and is vertically arranged. The lower push rod 254 is inserted into the lower clamping guide block 224 and is vertically arranged. The first four-link rod 253 includes a first hinge shaft 2531 and a second hinge shaft 2532 that are relatively arranged and a third hinge shaft 2533 and a fourth hinge shaft 2534 that are relatively arranged. The two ends of the upper push rod 252 are respectively hinged to the upper movable arm 231 and the first hinge shaft 2531. The two ends of the push rod 254 are respectively hinged to the lower moving arm 232 and the second hinge shaft 2532, and the two ends of the transverse tie rod 255 are respectively hinged to the middle moving arm 233 and the third hinge shaft 2533; the clamping frame 220 is fixedly provided with an intermediate clamping guide block 225, and the transverse tie rod 255 is passed through the intermediate clamping guide block 225 and is horizontally arranged; the moving arm driving assembly 250 also includes a moving arm cylinder 251, the cylinder body of the moving arm cylinder 251 is fixedly connected to the clamping frame 220, and the piston rod of the moving arm cylinder 251 is connected to the fourth hinge shaft 2534.

[0035] There are two groups of movable arms 230, which are arranged on both sides of the clamping frame 220; they also include a linkage rod 256, the two ends of which are respectively hinged to the two fourth hinge shafts 2534, and only one movable arm cylinder 251 is provided, and the piston rod of the movable arm cylinder 251 is fixedly connected to the linkage rod 256.

[0036] The clamping pliers 240 includes a clamp body 241, a second four-link rod 242, and a clamping cylinder 243 for driving the clamp body 241 to clamp or open. The second four-link rod 242 includes a fifth hinge shaft 2421 and a sixth hinge shaft 2422 that are relatively arranged, and a seventh hinge shaft 2423 and an eighth hinge shaft 2424 that are relatively arranged. The second four-link rod 242 also includes a fifth rotating rod 2425, a sixth rotating rod 2426, a seventh rotating rod 2427, and an eighth rotating rod 2428. The middle section of the fifth rotating rod 2425 and the middle section of the sixth rotating rod 2426 are rotatably connected through the fifth hinge shaft 2421. One end of the fifth rotating rod 2425 and the sixth rotating rod 2426 are rotatably connected. One end of 2426 is fixedly provided with a clamp body 241 that clamps and cooperates with each other, the other end of the fifth rotating rod 2425 is rotatably connected to one end of the seventh rotating rod 2427 through the seventh hinge shaft 2423, the other end of the sixth rotating rod 2426 is rotatably connected to one end of the eighth rotating rod 2428 through the eighth hinge shaft 2424, and the other end of the seventh rotating rod 2427 is rotatably connected to the other end of the eighth rotating rod 2428 through the sixth hinge shaft 2422; the cylinder body of the clamping cylinder 243 is fixedly connected to the movable arm 230, and the piston rod of the clamping cylinder 243 is connected to the sixth hinge shaft 2422; the fifth hinge shaft 2421 is hinged to the movable arm 230.

[0037] There are two groups of clamping pliers 240, which are arranged on both sides of the movable arm 230; they also include a U-shaped rod 244, and the two ends of the U-shaped rod 244 are respectively hinged to the two sixth hinge shafts 2422; there is only one clamping cylinder 243, and the piston rod of the clamping cylinder 243 is fixedly connected to the U-shaped rod 244.

[0038] The clamping and rotating assembly includes a clamping frame motor, a housing of the clamping frame motor is fixedly connected to the clamping seat 210 , and a motor shaft of the clamping frame motor drives the clamping frame 220 to rotate.

[0039] The method of using the embodiment is as follows: when the stirrup c on the stirrup material box 910 is used up, a new stirrup material box 910 needs to be replaced. Since the end of the longitudinal reinforcement b is limited by the guide tube on the stirrup material box 910, the end of the longitudinal reinforcement b will not be fixed during the process of replacing the stirrup material box 910. Therefore, the longitudinal reinforcement b needs to be clamped. The clamping frame 220 rotates until the plane where the movable arm 230 is located is perpendicular to the axis of the longitudinal reinforcement b. The movable arm driving assembly 250 drives the upper movable arm 231, the lower movable arm 232, and the middle movable arm 233 to approach each other. The clamping cylinder 243 drives the clamp body 241 to close to clamp the longitudinal reinforcement b.

[0040] The upper moving arm 231, the lower moving arm 232 and the middle moving arm 233 approach each other in the following manner: the piston rod of the moving arm cylinder 251 extends, the third hinge shaft 2533 and the fourth hinge shaft 2534 move away from each other, and then the middle moving arm 233 moves toward the longitudinal rib b, and the first hinge shaft 2531 and the second hinge shaft 2532 approach each other, thereby pulling the upper moving arm 231 and the lower moving arm 232 closer to each other and moving them toward the longitudinal rib b;

[0041] When the stirrup moving assembly 410 needs to be avoided: the clamping cylinder 243 drives the clamp body 241 to open, and the moving arm driving assembly 250 drives the upper moving arm 231, the lower moving arm 232, and the middle moving arm 233 to move away from each other. At this time, the clamp body 241 is separated from the longitudinal reinforcement b, and the clamping frame 220 rotates outward;

[0042] The upper movable arm 231, the lower movable arm 232 and the middle movable arm 233 move away from each other in the following manner: the piston rod of the movable arm cylinder 251 retracts, the third hinge shaft 2533 and the fourth hinge shaft 2534 approach each other, and then the middle movable arm 233 moves toward the clamping frame 220, and the first hinge shaft 2531 and the second hinge shaft 2532 move away from each other, thereby pushing the upper movable arm 231 and the lower movable arm 232 away from each other and moving in the direction away from the longitudinal reinforcement b.

[0043] Example 2

[0044] like Fig. 9 As shown, Example 2 is based on Example 1, with the difference that: two groups of movable arm cylinders 251 are provided, the two groups of movable arm cylinders 251 respectively control the activities of the corresponding first four-link 253, and the two groups of movable arm cylinders 251 are synchronously provided.

[0045] The difference between the use of Example 2 and Example 1 is that when the movable arm 230 needs to move, the two groups of movable arm cylinders 251 need to be started synchronously and the extension amount or retraction amount is the same.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A steel bar feeding rotary clamping mechanism, characterized in that: The invention comprises a clamping assembly, wherein the clamping assembly comprises a fixed clamping seat (210), a clamping frame (220) arranged on the clamping seat (210), a movable arm (230) arranged on the clamping frame (220), and a plurality of clamping pliers (240) connected to the movable arm (230), wherein the plurality of clamping pliers (240) correspond one to one with the longitudinal reinforcement (b) of the steel cage; the clamping assembly has two working positions, wherein in the first working position, the clamping pliers (240) clamp and fix the longitudinal reinforcement (b); in the second working position, the clamping pliers (240) are separated from the longitudinal reinforcement (b) to avoid interference with the moving path of the stirrup (c); The clamping components are provided in two groups, and the two groups of clamping components are respectively arranged on both sides of the steel cage; The movable arm (230) is movably connected to the clamping frame (220); the movable arm (230) comprises an upper movable arm (231), a lower movable arm (232), and an intermediate movable arm (233); a movable arm driving assembly (250) for driving the upper movable arm (231), the lower movable arm (232), and the intermediate movable arm (233) to move closer to or farther from each other is provided between the upper movable arm (231), the lower movable arm (232), the intermediate movable arm (233) and the clamping frame (220); The upper moving arm (231) and the lower moving arm (232) are slidably connected to the clamping frame (220), and the sliding directions of the upper moving arm (231) and the lower moving arm (232) are arranged vertically; the middle moving arm (233) is slidably connected to the clamping frame (220), and the sliding direction of the middle moving arm (233) is arranged horizontally; The movable arm driving assembly (250) comprises a first four-link rod (253), a movable arm cylinder (251) horizontally arranged in the direction of piston rod extension and retraction, a vertically arranged upper ejector rod (252), a lower ejector rod (254) and a horizontally arranged transverse tie rod (255); the cylinder body of the movable arm cylinder (251) is fixedly connected to the clamping frame (220); the four corners of the first four-link rod (253) are connected to the piston rod of the movable arm cylinder (251), one end of the upper ejector rod (252), one end of the transverse tie rod (255) and one end of the lower ejector rod (254) in sequence; the other end of the upper ejector rod (252) is hinged to the upper movable arm (231); the other end of the transverse tie rod (255) is hinged to the middle movable arm (233); and the other end of the lower ejector rod (254) is hinged to the lower movable arm (232); The clamping frame (220) is rotatably connected to the clamping seat (210), the axis of the rotation axis of the clamping frame (220) is arranged vertically, and a clamping rotation assembly for driving the clamping frame (220) to rotate is arranged between the clamping frame (220) and the clamping seat (210).

2. The steel bar feeding rotary clamping mechanism according to claim 1 is characterized in that: The movable arms (230) are provided in two groups, and the two groups of movable arms (230) are respectively arranged on both sides of the clamping frame (220).

3. The steel bar feeding rotary clamping mechanism according to claim 2, characterized in that: It also includes a linkage rod (256), the two ends of which are respectively hinged to the two first four-link rods (253), and the piston rod of the movable arm cylinder (251) is fixedly connected to the linkage rod (256).

4. The steel bar feeding rotary clamping mechanism according to claim 3 is characterized in that: The clamping pliers (240) comprises a pliers body (241), a second four-link rod (242), and a clamping cylinder (243) for driving the pliers body (241) to clamp or open, the cylinder body of the clamping cylinder (243) being fixedly connected to the movable arm (230), and the opposite ends of the second four-link rod (242) being respectively connected to the piston rod of the clamping cylinder (243) and the pliers body (241).

5. The steel bar feeding rotary clamping mechanism according to claim 4, characterized in that: The clamping pliers (240) are provided in two groups, and the two groups of the clamping pliers (240) are respectively arranged on both sides of the movable arm (230).

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