A U-shaped steel bar flexible clamping device

Abstract

The present invention discloses a U-shaped steel bar flexible clamping device, comprising an upper frame assembly and a lower frame assembly symmetrical in the upper and lower directions, wherein the upper frame assembly and the lower frame assembly are both provided with relatively arranged linear guide rails, steel bar positioning and pushing components, fork-changing components, electric cylinder drive components, and jacking components, wherein the upper frame assembly and the lower frame assembly are connected and lifted by the electric cylinder drive components, wherein the jacking components drive the steel bar positioning and pushing components to realize up and down movement, and the fork-changing components drive the steel bar positioning and pushing components to move left and right along the linear guide rails. The present invention can realize the precise positioning and clamping of multiple U-shaped steel bars; can meet various flexible requirements of U-shaped steel bars; and is suitable for the flexible automation requirements of production lines.

Description

Technical Field

[0001] The invention relates to the field of steel bar conveying equipment in the construction industry, and in particular to a U-shaped steel bar flexible clamping device. Background Art

[0002] This product is mainly used for the equipment of conveying rebar in the construction industry. In the traditional construction industry, the steel bar frame needs to be manually loaded and welded, which consumes a lot of man-hours and has a bad working environment, which affects the health of workers. The work intensity is high and the efficiency is low. It needs to be manually connected one by one. To adapt to the automated production of steel products, the original double straight steel bars used in manual production are changed to U-shaped steel bars. The current U-shaped steel bars are generally rebars, and the sizes of the opposite sides of the rebars are different. The existing rigid fixing method cannot meet the clamping characteristics of the rebars, and there is no equipment to accurately clamp multiple steel bars at the same time. Summary of the invention

[0003] The purpose of the present invention is to provide a U-shaped steel bar flexible clamping device which can improve work efficiency, improve working environment and realize 24-hour uninterrupted production.

[0004] The technical solution to achieve the purpose of the present invention is: a U-shaped steel bar flexible clamping device, comprising an upper frame assembly and a lower frame assembly that are symmetrical in upper and lower directions, the upper frame assembly and the lower frame assembly are provided with relatively arranged linear guide rails, steel bar positioning components to be pushed, fork changing components, electric cylinder driving components, and lifting components, the upper frame assembly and the lower frame assembly are connected through the electric cylinder driving component and perform lifting and lowering movements, the lifting component drives the steel bar positioning component to be pushed to realize up and down movement, and the fork changing component drives the steel bar positioning component to be pushed to move left and right along the linear guide rails.

[0005] The steel bar positioning and pushing component includes a pressure wheel mechanism, a parallelogram guide groove lifting mechanism connected to the pressure wheel mechanism, and a steel bar pushing support mechanism. The pressure wheel mechanism is connected to a jacking component, and the jacking component drives the pressure wheel mechanism to lift and lower, thereby causing the parallelogram guide groove lifting mechanism to run in the opposite direction on the steel bar pushing support mechanism.

[0006] The steel bar pushing support mechanism comprises a pushing bottom plate and a pushing support plate connected to the pushing bottom plate. The pushing support plate is provided with two pushing guide grooves. The parallelogram guide groove lifting mechanism is lifted and lowered along the pushing guide grooves.

[0007] The parallelogram guide groove lifting mechanism includes a guide groove plate, a first fixed support and a second fixed support arranged at both ends of the pushing base plate, and also includes a movable support. The movable support is connected to the pressure wheel mechanism, and the guide groove plate is lifted and lowered along the pushing guide groove. The movable support is hinged to the first fixed support through a first connecting rod and an intermediate connecting rod that are hinged to each other. The first fixed support is then hinged to the guide groove plate through a cantilever support rod, and the second fixed support is hinged to the guide groove plate through a support rod.

[0008] The guide groove plates are provided with two and are arranged in parallel. The two guide groove plates are connected by a connecting pin, and an accommodating space for accommodating the passage of steel bars is formed between the two guide groove plates.

[0009] Preferably, the pressure wheel mechanism includes a pressure wheel spring fixing block for fixing the pressure wheel and a guide block arranged on the side plate, the guide block is penetrated by a first linear bearing fixed to the guide block and a guide rod arranged in the first linear bearing, the top of the guide rod passes through the second linear bearing in the pressure wheel spring fixing block and is connected to the spring limit block, the second linear bearing is fixed to the pressure wheel spring fixing block, the bottom end of the guide rod is provided with a movable block, the movable block is lifted and moved by a power mechanism, the bottom end of the spring limit block is connected to one end of the spring, and the other end of the spring is inserted into the bottom groove in the pressure wheel spring fixing block.

[0010] The steel bar positioning and pushing assembly also includes a brake brake assembly, which includes a brake mounting plate, a brake slide rail is provided on the brake mounting plate, a brake limit plate is provided on the top of the brake mounting plate, and a T-slot fixing block is provided at the bottom of the brake mounting plate for fixing. It also includes a brake clamping column, a brake spring and a brake sliding block, one end of the brake spring is fixedly connected to the bottom end of the brake limit plate, and the other end is inserted into the brake sliding block; it also includes a brake top plate and a brake drive that moves the brake top plate up and down through a top plate slider provided on the frame assembly; the brake drive moves the brake top plate up and down, and the brake top plate clamps or disengages from the brake clamping column, and the brake clamping column drives the brake mounting plate and the T-slot fixing block to move up and down along the brake slide rail to extend and retract the spring to achieve positioning.

[0011] Preferably, the fork changing assembly includes a rack, a conveying motor and a motor mounting plate arranged on the frame assembly, and also includes a gear arranged on the motor mounting plate. The motor mounting plate is used to connect the steel bar positioning assembly to be pushed, and the conveying motor drives the steel bar positioning assembly to be pushed on the motor mounting plate to move left and right along the linear guide rail through the gear rack.

[0012] Preferably, the electric cylinder driving assembly comprises an electric cylinder seat arranged on the lower frame assembly and a servo electric cylinder arranged on the electric cylinder seat, and one end of the servo electric cylinder is connected to the upper frame assembly through an upper frame mounting plate.

[0013] Preferably, both ends of the upper frame mounting plate are provided with symmetrically arranged frame guide rods, and the frame guide rods are inserted into the frame guide holes of the electric cylinder seat to achieve up and down guidance.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects: (1) The present invention is suitable for the clamping characteristics of U-shaped threaded steel bars with different sizes of opposite sides in each direction.

[0015] (2) The present invention can accurately clamp multiple steel bars at the same time, and can realize the accurate positioning and clamping of multiple U-shaped steel bars; 2. It can adapt to the special structure of threaded steel bars (non-circular); it can meet the various flexibility requirements of U-shaped steel bars (opening, length, diameter, spacing, non-circular, etc.); it is suitable for the flexible automation requirements of production lines.

[0016] (3) The present invention aims to improve the shortcomings of the existing manual loading and unloading, enhance work efficiency, improve the working environment, and achieve 24-hour uninterrupted production, which is of great significance to the efficient production and sustainable development of this industry.

[0017] It is suitable for synchronous conveying of multiple groups of materials. When the spacing of materials needs to be adjusted, the specifications can be adjusted. Multiple units can be driven by one power source, and can be linked up and down in a one-to-many manner. It can complete the on-demand movement and fixation of multiple steel bar positioning components to be pushed in a simple way, greatly improving work efficiency, with low cost and reliable operation.

[0018] (4) Compared with the conventional fixed material conveying method, the present invention mainly saves power source. One power mechanism can drive the movement of multiple mechanical units, saving power components, thereby bringing cost advantages. The structure is more concise. The one-to-many action advantage is obvious when the specifications of the production materials are not frequently changed. It saves more energy and is more economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a partial structural schematic diagram of the present invention (the lower frame assembly and the electric cylinder drive assembly are not shown);

[0022] Figure 3 It is a partial structural schematic diagram of the present invention (showing the linear guide rail, the shift fork changing assembly and the steel bar positioning and pushing assembly);

[0023] Figure 4 for Figure 3 A cross-sectional view of

[0024] Figure 5 for Figure 3 A partial structural diagram of

[0025] Figure 6 for Figure 3 Another part of the structural diagram;

[0026] Figure 7 for Figure 6 A magnified schematic diagram of point A;

[0027] Figure 8 This is a structural schematic diagram of a steel bar positioning and pushing assembly of the present invention;

[0028] Fig. 9 for Figure 8 A partial cross-sectional view of

[0029] Fig.10 A top view of a steel bar positioning assembly to be pushed according to the present invention;

[0030] Fig.11 It is a front view of the parallelogram guide groove lifting mechanism of the present invention;

[0031] Fig.12 It is a structural schematic diagram of the parallelogram guide groove lifting mechanism of the present invention;

[0032] Fig.13 It is a structural schematic diagram of the pressing wheel mechanism of the present invention;

[0033] Fig.14 For the present invention Fig.13 A cross-sectional view of DETAILED DESCRIPTION Embodiment 1

[0034] See Figures 1 to 14 The U-shaped steel bar flexible clamping device of this embodiment includes an upper frame assembly 13 and a lower frame assembly 7 which are symmetrical in upper and lower directions. The upper frame assembly and the lower frame assembly are both provided with relatively arranged linear guide rails 8, a steel bar positioning component to be pushed 11, a fork changing component 1, an electric cylinder driving component 14, and a lifting component 9. The upper frame assembly and the lower frame assembly are connected and lifted by the electric cylinder driving component. The lifting component drives the steel bar positioning component to be pushed to realize up and down movement, and the fork changing component drives the steel bar positioning component to be pushed to move left and right along the linear guide rail.

[0035] The steel bar positioning and pushing component includes a pressure wheel mechanism 4, a parallelogram guide groove lifting mechanism 3 connected to the pressure wheel mechanism, and a steel bar pushing support mechanism 5. The pressure wheel mechanism is connected to the jacking component, and the jacking component drives the pressure wheel mechanism to lift and lower, thereby causing the parallelogram guide groove lifting mechanism to run in the opposite direction on the steel bar pushing support mechanism.

[0036] The steel bar pushing support mechanism comprises a pushing bottom plate 501 and a pushing support plate 502 connected to the pushing bottom plate. Two pushing guide grooves 503 are arranged on the pushing support plate. The parallelogram guide groove lifting mechanism moves up and down along the pushing guide grooves.

[0037] The parallelogram guide groove lifting mechanism includes a guide groove plate 303, a first fixed support 309 and a second fixed support 302 arranged at both ends of the pushing base plate, and also includes a movable support 306. The movable support is connected to the pressure wheel mechanism, and the guide groove plate is lifted and lowered along the pushing guide groove. The movable support is hinged to the first fixed support through a first connecting rod 305 and an intermediate connecting rod 310 that are hinged to each other. The first fixed support is then hinged to the guide groove plate through a cantilever support rod 304, and the second fixed support is hinged to the guide groove plate through a support rod 301.

[0038] The guide groove plates are provided with two and are arranged in parallel. The two guide groove plates are connected by a connecting pin, and a receiving space for receiving the steel bars is formed between the two guide groove plates. The cantilever support rod is hinged to the guide groove plates by a connecting rod pin 311.

[0039] The pressure wheel mechanism includes a pressure wheel spring fixing block 402 for fixing the pressure wheel 403 and a guide block 406 arranged on the side plate, the guide block is penetrated by a first linear bearing 409 fixed to the guide block and a guide rod 408 arranged in the first linear bearing, the top of the guide rod passes through the second linear bearing 411 in the pressure wheel spring fixing block and is connected to the spring limit block 414, the second linear bearing is fixed to the pressure wheel spring fixing block, the bottom end of the guide rod is provided with a movable block 407, the movable block is lifted and moved by a power mechanism, the bottom end of the spring limit block is connected to one end of the spring 401, and the other end of the spring is inserted into the bottom groove in the pressure wheel spring fixing block.

[0040] The steel bar positioning and pushing assembly also includes a brake brake assembly 12, which includes a brake mounting plate 1201, a brake slide rail 1202 is provided on the brake mounting plate, a brake limit plate is provided on the top of the brake mounting plate, a T-slot fixing block 1203 for fixing is provided on the bottom of the brake mounting plate, and also includes a brake clamping column 1204, a brake spring 1205 and a brake sliding block 1206, one end of the brake spring is fixedly connected to the bottom end of the brake limit plate, and the other end is inserted into the brake sliding block; it also includes a brake top plate 1207 and a brake drive 1209 that moves the brake top plate up and down through a top plate slider 1208 provided on the frame assembly; the brake drive moves the brake top plate up and down, and the brake top plate clamps or disengages from the brake clamping column 1204, and the brake clamping column drives the brake mounting plate and the T-slot fixing block to move up and down along the brake slide rail to extend and retract the spring to achieve positioning.

[0041] The fork changing assembly includes a rack 105, a conveying motor 101 and a motor mounting plate 111 arranged on the frame assembly, and also includes a gear 106 arranged on the motor mounting plate. The motor mounting plate is used to connect the steel bar positioning and pushing assembly 11. The conveying motor drives the steel bar positioning and pushing assembly on the motor mounting plate to move left and right along the linear guide rail through the gear rack.

[0042] The electric cylinder driving assembly comprises an electric cylinder seat arranged on the lower frame assembly and a servo electric cylinder arranged on the electric cylinder seat. One end of the servo electric cylinder is connected to the upper frame assembly through an upper frame mounting plate.

[0043] Both ends of the upper frame mounting plate are provided with symmetrically arranged frame guide rods, and the frame guide rods are inserted into the frame guide holes of the electric cylinder seat to achieve up and down guidance.

[0044] During specific implementation, the front-end equipment gives a signal, and the front lifting cylinder is activated to drive multiple groups of steel bar positioning components to be pushed to press down, compact and fix the steel bars, and the front station provides power for the transportation of the steel bars. The steel bars continue to be transported forward, and the cylinder of the steel bar positioning component to be pushed lifts the upper part of the steel bars, and the steel bars continue to be transported. When it reaches the exit position, the rear lifting cylinder is activated to continue to compact the steel bars through rollers and continue to transport them forward. The pressing wheel mechanism can be compatible with steel bars 404 of different specifications. The accommodation space between the upper and lower pressing wheels is used to place steel bars. The stroke of the upper and lower pressing wheels makes the upper and lower pressing wheels tangent to the steel bars after pressing them, ensuring that the pressing wheels can press the steel bars regardless of their size. During the working process, the lifting assembly drives the steel bar positioning component to be pushed to realize up and down operation, and the fork changing assembly drives the steel bar positioning component to be pushed to move left and right along the linear guide rail. The lifting cylinder of the front lifting assembly drives multiple groups of pressing wheel mechanisms to press down, compact and fix the steel bars, and the front station provides power for the transportation of the steel bars. The steel bars continue to be transported forward. When they reach the exit position, the rear lifting cylinder is activated, and the rollers of the pressing wheel mechanism continue to compact the steel bars and continue to transport them forward. The brake assembly is used to position and fix the steel bar positioning component to be pushed.

[0045] During the operation of the parallelogram guide groove lifting mechanism, the first connecting rod, the middle connecting rod and the cantilever support rod form a connecting rod mechanism. The pressure wheel descends, and the guide groove plate of the connecting rod mechanism rises. The power comes from the same power mechanism, and a single drive realizes two actions. The downward action can be accompanied by the upward action. In this way, when conveying a rod-shaped object, the object can be pressed down and fixed, and it can also play a guiding role in the process of conveying the rod-shaped object.

[0046] During the working process, the movable support acts as a moving point and moves up and down, driving the cantilever support rod to rotate around the axis through the first connecting rod, and the guide groove plate is connected by the hinge pin to make an up and down lifting movement.

[0047] The pressure wheel is fixed on the pressure wheel spring fixing block. The pressure wheel can be one or more. The pressure wheel spring fixing block is equipped with a spring. The pressure wheel spring fixing block is connected to the second linear bearing and slides directly on the guide rod. A movable block is installed at the end of the guide rod. When pressing down the fixed material 404, such as steel bars, the movable block is subjected to a downward force, driving the guide wheel to press down as a whole. Multiple pressure wheels can press the pressed material, and the size of the pressure can be adjusted by adjusting the pre-pressure of the spring through the adjusting screw 413, so as to adjust the pressure size of the pressed material. The steel bars are placed under the pressure wheel, and the cylinder gives power to make the pressure wheel move downward as a whole. After pressing down to contact the steel bars, the pressure wheel is subjected to an upward force to compress the spring upward, so that the compression spring fixing block moves upward along the guide rod.

[0048] The movement of the compression spring fixing block can be compatible with steel bars of different specifications. The accommodation space between the upper and lower pressing wheels is used to place the steel bars. The stroke of the upper and lower pressing wheels makes the upper and lower pressing wheels tangent to the steel bars after pressing them, ensuring that the pressing wheels can press the steel bars regardless of whether they are large or small. During operation, when the diameter of the steel bar increases, the spring compression increases and the pressure increases. When the diameter of the steel bar decreases, the spring compression decreases and the pressure decreases. The stroke of the upper and lower pressing wheels is matched with the stroke of the cylinder of the entire pressing wheel. The compatibility of steel bars of different diameters is ensured by the compression of the spring.

[0049] The pressure wheel will press the steel bar, which is related to the compression amount of the spring. When the component is pressed down, the spring will be compressed upward and there will be an elastic force. The pressure wheel spring fixing block can move up and down along the guide rod.

[0050] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A U-shaped steel bar flexible clamping device, characterized in that: The machine comprises an upper frame assembly (13) and a lower frame assembly (7) which are symmetrical in the upper and lower directions. The upper frame assembly and the lower frame assembly are provided with linear guide rails (8) arranged relatively to each other, a steel bar positioning and pushing assembly (11), a shift fork changing assembly (1), an electric cylinder driving assembly (14), and a lifting assembly (9). The upper frame assembly and the lower frame assembly are connected via the electric cylinder driving assembly and perform lifting and lowering movements. The lifting assembly drives the steel bar positioning and pushing assembly to move up and down, and the shift fork changing assembly drives the steel bar positioning and pushing assembly to move left and right along the linear guide rails. The steel bar positioning and pushing assembly comprises a pressing wheel mechanism (4), a parallelogram guide groove lifting mechanism (3) connected to the pressing wheel mechanism, and a steel bar pushing support mechanism (5); the pressing wheel mechanism is connected to a lifting assembly, and the lifting assembly drives the pressing wheel mechanism to move up and down, thereby causing the parallelogram guide groove lifting mechanism to move in the opposite direction on the steel bar pushing support mechanism; The steel bar pushing support mechanism comprises a pushing bottom plate (501) and a pushing support plate (502) connected to the pushing bottom plate, the pushing support plate is provided with two pushing guide grooves (503), and the parallelogram guide groove lifting mechanism moves up and down along the pushing guide grooves; The parallelogram guide groove lifting mechanism comprises a guide groove plate (303), a first fixed support (309) and a second fixed support (302) arranged at both ends of the push bottom plate, and also comprises a movable support (306), wherein the movable support is connected to the pressure wheel mechanism, the guide groove plate is lifted and lowered along the push guide groove, the movable support is hinged to the first fixed support via a first connecting rod (305) and an intermediate connecting rod (310) hinged to each other, the first fixed support is hinged to the guide groove plate via a cantilever support rod (304), and the second fixed support is hinged to the guide groove plate via a support rod (301); The guide groove plates are provided with two and are arranged in parallel. The two guide groove plates are connected by a connecting pin, and an accommodation space for accommodating the passage of the steel bars is formed between the two guide groove plates; The steel bar positioning and pushing assembly also includes a brake assembly (12), the brake assembly including a brake mounting plate (1201), a brake slide rail (1202) provided on the brake mounting plate, a brake limit plate provided on the top of the brake mounting plate, a T-slot fixing block (1203) for fixing the brake mounting plate provided on the bottom of the brake mounting plate, and also including a brake clamping column (1204), a brake spring (1205) and a brake sliding block (1206), one end of the brake spring is connected to the brake limit The bottom end of the plate is fixed, and the other end is inserted into the brake sliding block; it also includes a brake top plate (1207) and a brake drive (1209) that moves the brake top plate up and down through a top plate slider (1208) provided on the frame assembly; the brake drive moves the brake top plate up and down, and the brake top plate clamps or disengages from the brake clamping column (1204); the brake clamping column drives the brake mounting plate and the T-slot fixing block to move up and down along the brake slide rail to allow the brake spring to expand and contract to achieve positioning.

2. The U-shaped steel bar flexible clamping device according to claim 1 is characterized in that: The pressure wheel mechanism comprises a pressure wheel spring fixing block (402) for fixing the pressure wheel (403) and a guide block (406) arranged on the side plate, the guide block is penetrated by a first linear bearing (409) fixed to the guide block and a guide rod (408) arranged in the first linear bearing, the top of the guide rod passes through the second linear bearing (411) in the pressure wheel spring fixing block and is connected to the spring limit block (414), the second linear bearing is fixed to the pressure wheel spring fixing block, the bottom end of the guide rod is provided with a movable block (407), the movable block is lifted and moved by a power mechanism, the bottom end of the spring limit block is connected to one end of the spring (401), and the other end of the spring is inserted into the bottom groove in the pressure wheel spring fixing block.

3. The U-shaped steel bar flexible clamping device according to claim 2 is characterized in that: The shift fork changing assembly comprises a rack (105) arranged on a frame assembly, a conveying motor (101) and a motor mounting plate (111), and also comprises a gear (106) arranged on the motor mounting plate, the motor mounting plate being used to connect the steel bar positioning and to-be-pushed assembly (11), and the conveying motor drives the steel bar positioning and to-be-pushed assembly on the motor mounting plate to move left and right along a linear guide rail via the gear rack.

4. The U-shaped steel bar flexible clamping device according to claim 1 is characterized in that: The electric cylinder driving assembly comprises an electric cylinder seat arranged on the lower frame assembly and a servo electric cylinder arranged on the electric cylinder seat. One end of the servo electric cylinder is connected to the upper frame assembly through an upper frame mounting plate.

5. The U-shaped steel bar flexible clamping device according to claim 4 is characterized in that: Both ends of the upper frame mounting plate are provided with symmetrically arranged frame guide rods, and the frame guide rods are inserted into the frame guide holes of the electric cylinder seat to achieve up and down guidance.

Images