Hydraulic building steel bar bending device

Abstract

This invention discloses a hydraulic rebar bending device, comprising a base with two vertical plates fixed in the middle. An equal number of sleeves are horizontally mounted on each of the two vertical plates, with corresponding sleeve axes collinear. A cap is hinged to each sleeve. First hydraulic cylinders are mounted on both sides of the base, with pressure plates connected to the piston ends of the first hydraulic cylinders. First sliding grooves perpendicular to the vertical plates are provided at both ends of the base. The bottom of the pressure plate is slidably installed within the first sliding groove. A slide rail is provided on the side of the pressure plate facing the vertical plates, and several sliding blocks are mounted on the slide rail. A servo motor for driving the sliding blocks to move on the slide rail is mounted on one side of each sliding block. An electric turntable is mounted on each sliding block, and a second hydraulic cylinder is mounted on the electric turntable. A pressure roller is mounted on the piston end of the second hydraulic cylinder. This invention overcomes the shortcomings of existing technologies and enables high-precision batch production for both single-bending and multiple-bending processes.

Description

Technical Field

[0001] This invention relates to the field of steel bar processing equipment technology, and in particular to a hydraulic steel bar bending device for construction. Background Technology

[0002] On construction sites, steel bars need to be bent according to construction process requirements. Most existing steel bar bending equipment performs a one-time bending process after fixing the steel bars. This type of equipment is suitable for processing steel bars with only one bend. However, when multiple bends are required, processing them one by one can lead to several problems. First, already-made bends can interfere with the proper fixing of the steel bars. Second, bending other parts can also affect already-made bends, easily causing secondary deformation and reducing the precision of the bending process. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a hydraulic rebar bending device for construction, which can solve the problems of the prior art and can achieve high-precision batch production for both single bending part process requirements and multiple bending part processes.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows.

[0005] A hydraulic rebar bending device includes a base with two vertical plates fixed in the middle. An equal number of sleeves are horizontally mounted on each vertical plate, with corresponding sleeve axes collinear. A cap is hinged to each sleeve. First hydraulic cylinders are mounted on both sides of the base, with pressure plates connected to the piston ends of the first hydraulic cylinders. First sliding grooves perpendicular to the vertical plates are provided at both ends of the base. The bottom of the pressure plate is slidably installed within the first sliding grooves. A slide rail corresponding to the collinear sleeves is provided on the side of the pressure plate facing the vertical plates. Each slide rail is at the same height as two corresponding collinear sleeves. Several sliding blocks are mounted on the slide rails. A servo motor for driving the sliding blocks to move on the slide rails is mounted on one side of each sliding block. An electric turntable is mounted on each sliding block, and a second hydraulic cylinder is mounted on the electric turntable. A pressure roller is mounted on the piston end of the second hydraulic cylinder.

[0006] Preferably, the pressure roller includes a bracket fixedly connected to the piston end of the second hydraulic cylinder. The pressure roller is mounted on the top of the bracket via a bearing. Limiting flanges are provided on both sides of the pressing surface between the pressure roller and the reinforcing bar. The inner side of the limiting flange is provided with an inclined surface. The distance between the two inclined surfaces gradually decreases from the top to the bottom of the flange.

[0007] Preferably, the top surface of the limiting flange is provided with a striped layer.

[0008] Preferably, the bearing includes an inner bearing ring connected to a bracket and an outer bearing ring connected to a pressure roller. A bearing bracket is installed between the inner and outer bearing rings and is fixedly connected to the inner bearing ring. An annular groove is provided on the inner side of the outer bearing ring, and annular flanges are symmetrically arranged on both sides of the annular groove. An elastic part is provided on the bearing bracket that slides into the annular flange. An arc-shaped spring is provided between the two annular flanges. Ball bearings are installed inside the bearing bracket, and the ball bearings are interference-fitted with the arc-shaped spring.

[0009] Preferably, the sleeve has a flared end facing the pressure roller, and a flexible gasket is provided on the inner wall of the flared end.

[0010] Preferably, five sleeves are horizontally installed on each of the two vertical plates.

[0011] The beneficial effects of the above technical solution are as follows: This invention uses a bidirectional synchronous pressure method to achieve simultaneous bending of multiple parts of the reinforcing bar, effectively solving the technical problems existing in the current bending equipment. It offers high bending accuracy, fast processing speed, and good durability. During the pressure bending process, the pressure roller is the directly stressed part. This invention features a newly designed pressure roller structure. By changing the installation method of the bearing bracket, it is directly fixed to the inner ring of the bearing, improving the support strength of the bearing bracket. The top of the bearing bracket is positioned within an annular groove for limiting, and is supported by the elastic part and the outer ring of the bearing, making the force on the bearing bracket and the outer ring of the bearing more uniform, and the rolling of the balls within the bearing bracket more stable. Simultaneously, the use of arc-shaped springs and balls for rolling pressing increases the contact area of ​​the rolling balls, thereby reducing wear and further improving the rotational stability of the bearing under strong pressure. The limiting flange is used to limit the reinforcing bar during bending, and also supports the reinforcing bar on the other side of the bending part. The striped layer on its top can effectively press against the grooves on the surface of the reinforcing bar, thereby improving the stability of the support. The flared part on the sleeve prevents the reinforcing bar located at the edge of the sleeve from being rigidly squeezed directly against the edge of the sleeve during bending operations, thus protecting the reinforcing bar and the sleeve. Attached Figure Description

[0012] Figure 1 This is a structural diagram of a specific embodiment of the present invention.

[0013] Figure 2 This is a top view (initial state before operation) of any layer of the bending mechanism in a specific embodiment of the present invention.

[0014] Figure 3 This is a radial cross-sectional view of the pressure roller in a specific embodiment of the present invention.

[0015] Figure 4 This is a radial sectional view of a bearing in a specific embodiment of the present invention. Detailed Implementation

[0016] Reference Figure 1-4 One specific embodiment of the present invention includes a base 1, with two vertical plates 2 fixed in the middle of the base 1. Five sleeves 3 are horizontally installed on the two vertical plates 2 respectively. The corresponding sleeves 3 on the two vertical plates 2 are arranged with their axes collinear. A cover 4 is hinged to the sleeve 3. A first hydraulic cylinder 5 is installed on both sides of the base 1. A pressure plate 6 is connected to the piston end of the first hydraulic cylinder 5. A first sliding groove 7 perpendicular to the vertical plate 2 is provided at both ends of the base 1. The bottom of the pressure plate 6 is slidably installed in the first sliding groove 7. A slide rail 8 corresponding to the collinear sleeves 3 is provided on the side of the pressure plate 6 facing the vertical plate 2. Each slide rail 8 is at the same height position as the two collinear sleeves 3. A plurality of slide blocks 9 are installed on the slide rail 8. A servo motor 10 for driving the slide block 9 to move on the slide rail 8 is installed on one side of the slide block 9. An electric turntable 11 is installed on the slide block 9. A second hydraulic cylinder 12 is installed on the electric turntable 11. A pressure roller part 13 is installed on the piston end of the second hydraulic cylinder 12. The pressure roller section 13 includes a bracket 14 fixedly connected to the piston end of the second hydraulic cylinder 12. A pressure roller 17 is mounted on the top of the bracket 14 via a bearing 16. Limiting flanges 18 are provided on both sides of the pressing surface between the pressure roller 17 and the reinforcing bar. The inner side of the limiting flange 18 is provided with a beveled portion 19, and the distance between the two beveled portions 19 gradually decreases from the top to the bottom of the flange 18. A striped layer 15 is provided on the top surface of the limiting flange 18. The bearing 16 includes an inner bearing ring 20 connected to the bracket 14 and an outer bearing ring 21 connected to the pressure roller 17. A bearing bracket 22 is installed between the inner bearing ring 20 and the outer bearing ring 21, and the bearing bracket 22 is fixedly connected to the inner bearing ring 20. An annular groove 23 is provided on the inner side of the outer bearing ring 21, and annular flanges 24 are symmetrically arranged on both sides of the annular groove 23. An elastic part 25 is provided on the bearing bracket 22, which slides into the annular flanges 24. An arc-shaped spring piece 26 is provided between the two annular flanges 24. A ball bearing 27 is installed in the bearing bracket 22, and the ball bearing 27 is interference-fitted with the arc-shaped spring piece 26. The sleeve 3 has a flared part 30 at one end facing the pressure roller 13, and a flexible gasket 28 is provided on the inner wall of the flared part 30.

[0017] In addition, several rubber sheets 29 are evenly distributed on the surface of the inclined section 19, with the top surface of the rubber sheets 29 flush with the surface of the inclined section 19. The rubber sheets 29 increase the friction between the reinforcing bar and the inclined section 19, thereby improving the stability of the reinforcing bar in contact with the pressure roller 17 during bending.

[0018] The method of using this invention is as follows: Open the cover 4, place the reinforcing bar to be processed into the sleeve 3, and then lock the cover 4. According to the process requirements, move the pressure roller 13 located on one side of the base 1 to the position where it is to be squeezed and bent, responsible for squeezing the reinforcing bar. The axis of the pressure roller 17 is perpendicular to the reinforcing bar. Then move the pressure roller 13 on the other side of the base 1 to both sides of the position where it is to be squeezed and bent, responsible for supporting the reinforcing bar. The axis of the pressure roller 17 is parallel to the reinforcing bar. Then start the second hydraulic cylinder 12 and the servo motor 10. According to the process parameters, control the pressure roller 17 responsible for squeezing the reinforcing bar to squeeze and bend the reinforcing bar according to the set curvature, and control the pressure roller 17 responsible for supporting the reinforcing bar to support the reinforcing bar on both sides of the squeezing and bending area. After the bending operation is completed, open the cover 4 and take out the processed reinforcing bar. This equipment can bend and process 5 reinforcing bars at the same time.

[0019] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic rebar bending device for construction, characterized in that: The base includes a base (1), with two vertical plates (2) fixed in the middle. An equal number of sleeves (3) are horizontally installed on each of the two vertical plates (2). The corresponding sleeves (3) on the two vertical plates (2) are arranged along the same axis. A cover (4) is hinged to each sleeve (3). First hydraulic cylinders (5) are installed on both sides of the base (1). A pressure plate (6) is connected to the piston end of each first hydraulic cylinder (5). First sliding grooves (7) perpendicular to the vertical plates (2) are provided at both ends of the base (1). The bottom of the pressure plate (6) is slidably installed within the first sliding groove (7). A slide rail (8) corresponding to a collinear sleeve (3) is provided on the side of the plate (6) facing the vertical plate (2). Each slide rail (8) is at the same height as the two collinear sleeves (3). Several slide blocks (9) are installed on the slide rail (8). A servo motor (10) for driving the slide block (9) to move on the slide rail (8) is installed on one side of the slide block (9). An electric turntable (11) is installed on the slide block (9). A second hydraulic cylinder (12) is installed on the electric turntable (11). A pressure roller (13) is installed on the piston end of the second hydraulic cylinder (12). The pressure roller section (13) includes a bracket (14) fixedly connected to the piston end of the second hydraulic cylinder (12). A pressure roller (17) is mounted on the top of the bracket (14) via a bearing (16). Limiting flanges (18) are provided on both sides of the pressing surface between the pressure roller (17) and the reinforcing bar. An inclined surface (19) is provided on the inner side of the limiting flange (18). The distance between the two inclined surfaces (19) gradually decreases from the top to the bottom of the limiting flange (18). A striped layer (15) is provided on the top surface of the limiting flange (18). The bearing (16) includes a bearing inner ring (20) connected to the bracket (14) and a bearing inner ring (20) connected to the pressure roller (17). A bearing bracket (22) is installed between the bearing outer ring (21), the bearing inner ring (20), and the bearing outer ring (21). The bearing bracket (22) is fixedly connected to the bearing inner ring (20). An annular groove (23) is provided on the inner side of the bearing outer ring (21). Annular flanges (24) are symmetrically provided on both sides of the annular groove (23). An elastic part (25) is provided on the bearing bracket (22) and slides into the annular flange (24). An arc-shaped spring piece (26) is provided between the two annular flanges (24). A ball (27) is installed in the bearing bracket (22). The ball (27) and the arc-shaped spring piece (26) are interference-fitted.

2. The hydraulic rebar bending device according to claim 1, characterized in that: The sleeve (3) has a flared end (30) facing the pressure roller (13), and a flexible gasket (28) is provided on the inner wall of the flared end (30).

3. The hydraulic rebar bending device according to claim 1, characterized in that: Five sleeves (3) are horizontally installed on the two vertical plates (2).

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