Steel bar straightening machine

Abstract

The utility model provides a steel bar straightening machine which comprises an inner frame and an outer frame, the outer frame is arranged on the outer side of the inner frame, and the two sides of the outer frame are fixedly connected with notch positions. The straightening device has the advantages that the straightening head at the output end of the air cylinder and the straightening heads at the two ends of the movable frame synchronously act and are centered to be close to jointly extrude and straighten reinforcing steel bars, the positions of the two groups of straightening heads are flexible and adjustable, and the straightening device can adapt to straightening of the reinforcing steel bars with different thicknesses; a gravity conveying mechanism is further designed on the inner frame, automatic downward sliding output of the straightened and cut steel bars can be achieved, specifically, the straightened steel bars are input into a sliding groove, then the section of steel bars is cut off from the front through a machine, the steel bars drive the sliding groove to rotate downwards through the gravity of the steel bars, the steel bars are stretched through an extension spring, and the steel bars automatically slide downwards along the sliding groove to be output. And then the sliding groove is reset to be horizontal under the action of the extension spring. The self-weight triggering mechanism of the sliding groove does not need extra power, the average material conveying speed is high, and automatic gravity material conveying can be achieved through the design of the sliding groove.

Description

Technical Field

[0001] This utility model relates to the field of steel bar processing technology, and in particular to a steel bar straightening machine. Background Technology

[0002] As an indispensable reinforcing material in construction engineering, the processing accuracy of steel bars directly affects the load-bearing capacity and construction efficiency of concrete structures. Straightening and correction is a key process in steel bar processing, aiming to eliminate bending deformation caused by transportation or storage and ensure the bars meet straightness requirements. However, traditional steel bar straightening equipment still faces significant technical bottlenecks in practical applications:

[0003] Straightening mechanism adaptability and stress defects: Existing straightening machines mostly use rollers in a single direction or pressure heads with fixed spacing to compress and straighten the reinforcing bars. The position of the straightening head is fixed, and it can only be adapted to reinforcing bars within a specific diameter range. For reinforcing bars of different specifications (such as Φ6mm to Φ20mm), it is necessary to manually adjust the roller spacing or change the mold, which is cumbersome and inefficient.

[0004] Power dependence and insufficient material conveying efficiency: Traditional equipment's material conveying mechanism mostly relies on motor-driven conveyor belts or chains, requiring an additional power source. This not only increases energy consumption but also leads to a higher failure rate due to the complexity of the mechanical structure. Especially after cutting, the steel bars need to be transferred to the stacking area manually or by a robotic arm, resulting in downtime or mismatched action cycles, making it difficult to achieve continuous and efficient production. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0006] Therefore, one objective of this utility model is to provide a rebar straightening machine to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0007] To achieve the above objectives, one embodiment of the present invention provides a rebar straightening machine, including an inner frame and an outer frame, wherein the outer frame is provided on the outside of the inner frame, and notches are fixedly connected to both sides of the outer frame;

[0008] A cylinder is fixedly connected to the inner side of the notch, and a straightening head is fixedly connected to the end of the cylinder output.

[0009] Several sleeves are fixedly connected to the inner side of the outer frame, a crossbeam is fixedly connected to the output end of the cylinder, a movable frame is fixedly connected to the top of the crossbeam by several pins, and a straightening head is fixedly connected to both ends of the front of the movable frame.

[0010] The rear of the movable frame is movably connected to the sleeve, and the inner side of the inner frame is movably connected to a sliding groove, which is open at the top and both ends.

[0011] The top of the inner frame is fixedly connected to a fixing frame, and the fixing frame is fixedly connected to the front of the slide groove by a tension spring.

[0012] Preferably, in any of the above embodiments, the outer frame spans both sides and above the inner frame, and a number of crossbars are fixedly connected to the inner side of the inner frame.

[0013] The above technical solution is adopted: This device is specially used for straightening and aligning steel bars. The power source is a geared motor, whose output end, together with a belt, drives two guide wheels to rotate. There is friction between the guide wheels and the steel bars, which drives the steel bars to move in a straight line. (Not shown in the figure)

[0014] The reinforcing bars are straightened when passing through this device.

[0015] The steel bar passes over several horizontal bars, and then, in order to match the thickness of the steel bar, the output ends of two sets of cylinders push out. The straightening heads at the output ends of the cylinders and the straightening heads at both ends of the movable frame move synchronously, centering and pressing together to straighten the steel bar. The positions of the two sets of straightening heads are flexibly adjustable to adapt to the straightening of steel bars of different thicknesses.

[0016] The inner frame is also designed with a gravity conveying mechanism, which can realize the automatic downward output of the straightened and cut steel bars. Specifically, after the steel bars are straightened, they are fed into the chute. Then, this section of steel bar is cut off from the front by the machine. The steel bars drive the chute to rotate downward by their own weight. The tension spring stretches the steel bars, and the steel bars automatically slide down the chute for output. Then, the chute returns to the horizontal position under the action of the tension spring.

[0017] Preferably, in any of the above solutions, the cylinder is installed horizontally, and the end face of the straightening head is an arc surface.

[0018] Preferably, of any of the above solutions, the outer frame is welded to the sleeve, and the crossbeam is riveted to the end of the cylinder output.

[0019] The above technical solution is adopted. The device consists of the following components: Inner frame: the main frame with a fixed crossbar at the top (spacing adjustable) to guide the horizontal movement of the reinforcing bars; Outer frame: spanning the outside and above the inner frame, with notches on both sides; Cylinder: horizontally fixed inside the notches, with the output end riveted to a crossbeam; Straightening head: installed at the output end of the cylinder and both ends of the movable frame, with an arc-shaped end face; Sleeve: welded to the inner side of the outer frame, slidingly engaging with the movable frame; Slide groove: a U-shaped open groove, hinged to the inner frame via a fixed frame, with a tension spring connected to the front end.

[0020] The core design of this device includes: cylinder drive: two cylinders synchronously push the crossbeam, causing the upper and lower movable frames to slide within the sleeve; straightening head configuration: straightening heads are installed at both ends of each movable frame, forming a straight line with the straightening head at the output end of the cylinder.

[0021] Gravity conveying mechanism: Slide dynamic balance: Under normal conditions, it is kept horizontal by the tension of the tension spring; after the cut steel bar falls into the slide, gravity overcomes the spring force and causes the slide to rotate and tilt downward around the fixed frame; the steel bar slides out automatically along the U-shaped groove, and the slide returns to its original position and stands by.

[0022] Preferably, of any of the above solutions, the spacing of the movable frame is adjustable, the movable frame is divided into upper and lower layers, and the material of the movable frame is carbon steel.

[0023] The core advantages of this device are: multiple sets of straightening heads surround and compress straighten to eliminate unidirectional stress; the spacing of the movable frame is adjustable to accommodate multiple specifications of steel bars; the self-weight triggering mechanism of the chute requires no additional power, the average material conveying speed is fast, and the design of the chute can realize automatic gravity material conveying.

[0024] Preferably, of any of the above solutions, the cross-sectional shape of the chute is U-shaped, the bending angle of the fixing frame is 90 degrees, and the chute is gravity-driven.

[0025] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0026] This rebar straightening machine is configured with cylinders, straightening heads, sleeves, crossbeams, movable frames, chutes, fixed frames, and tension springs. The rebar passes over several crossbeams, and then, to accommodate different rebar thicknesses, the output ends of two sets of cylinders push out. The straightening heads at the cylinder output ends and the straightening heads at both ends of the movable frame move synchronously, centering and pressing together to straighten the rebar. The positions of the two sets of straightening heads are flexibly adjustable to accommodate straightening rebars of different thicknesses.

[0027] The internal frame also features a gravity-feeding mechanism that enables automatic downward sliding output of straightened and cut rebar. Specifically, after straightening, the rebar is fed into the chute, where it is then cut from the front by the machine. The rebar's own weight causes the chute to rotate downwards, triggering a tension spring. The rebar then slides automatically down the chute and is output. The chute then returns to a horizontal position under the action of the tension spring. This gravity-triggered mechanism requires no additional power, results in a fast average conveying speed, and the chute design enables automatic gravity-feeding.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0031] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0032] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;

[0033] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0034] Figure 5 This is a schematic diagram of the steel bar drive structure of this utility model.

[0035] In the diagram: 1-Inner frame, 2-Outer frame, 3-Notch position, 4-Cylinder, 5-Straightening head, 6-Sleeve, 7-Crossbeam, 8-Modible frame, 9-Slide groove, 10-Fixed frame, 11-Tension spring, 12-Crossbar, 13-Guide wheel, 14-Reinforcing bar. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] like Figure 1-5 As shown, this rebar straightening machine includes an inner frame 1 and an outer frame 2. The outer frame 2 is installed on the outside of the inner frame 1, and notches 3 are fixedly connected to both sides of the outer frame 2.

[0039] A cylinder 4 is fixedly connected to the inner side of the notch 3, and a straightening head 5 is fixedly connected to the end of the output end of the cylinder 4.

[0040] Several sleeves 6 are fixedly connected to the inner side of the outer frame 2, and a crossbeam 7 is fixedly connected to the output end of the cylinder 4. A movable frame 8 is fixedly connected to the top of the crossbeam 7 by several pins, and a straightening head 5 is fixedly connected to both ends of the front of the movable frame 8.

[0041] The rear of the movable frame 8 is movably connected to the sleeve 6, and the inner side of the inner frame 1 is movably connected to the slide groove 9, which is open at the top and both ends.

[0042] A fixing frame 10 is fixedly connected to the top of the inner frame 1, and a tension spring 11 is fixedly connected to the front of the slide 9.

[0043] Example 1: The outer frame 2 spans both sides and above the inner frame 1, and several crossbars 12 are fixedly connected to the inner side of the inner frame 1. This device is specifically used for straightening and aligning reinforcing bars. The power source is a geared motor, whose output end, in conjunction with a belt, drives two guide wheels to rotate, creating friction with the reinforcing bars and driving them to move in a straight line. (Not shown in the figure.)

[0044] The reinforcing bars are straightened when passing through this device. Cylinder 4 is horizontally installed, and the end face of the straightening head 5 is curved. The outer frame 2 is welded to the sleeve 6, and the crossbeam 7 is riveted to the end of the output end of cylinder 4. The spacing of the movable frame 8 is adjustable; the movable frame 8 consists of upper and lower layers and is made of carbon steel. The cross-sectional shape of the slide 9 is U-shaped, the bending angle of the fixed frame 10 is ninety degrees, and the slide 9 is gravity-driven.

[0045] Example 2: The device consists of the following components: Inner frame 1: the main frame with a fixed top crossbar 12 (spacing adjustable) to guide the horizontal movement of the reinforcing bars; Outer frame 2: spanning the outer side and above the inner frame 1, with notches 3 on both sides; Cylinder 4: horizontally fixed inside the notches 3, with the output end riveted to the crossbeam 7; Straightening head 5: installed at the output end of cylinder 4 and both ends of the movable frame 8, with an arc-shaped end face; Sleeve 6: welded to the inner side of the outer frame 2, slidingly engaging with the movable frame 8; Slide 9: a U-shaped opening slot, hinged to the inner frame 1 via a fixed frame 10, with a tension spring 11 connected to the front end. The core design of this device includes: Cylinder 4 drive: two cylinders 4 synchronously push the crossbeam 7, causing the upper and lower movable frames 8 to slide within the sleeve 6; Straightening head configuration: straightening heads 5 are provided at both ends of each movable frame 8, forming a straight line with the straightening head 5 at the output end of cylinder 4.

[0046] Gravity conveying mechanism: Slide 9 dynamic balance: Under normal conditions, it is kept horizontal by the tension of the tension spring 11; after the cut steel bar falls into the slide 9, gravity overcomes the spring force and causes the slide 9 to rotate and tilt downward around the fixed frame 10; the steel bar slides out automatically along the U-shaped groove, and the slide 9 is reset and ready for standby.

[0047] The working principle of this utility model is as follows:

[0048] Input stage: The geared motor drives the pulley to rotate the two guide wheels 13 (speed 2-5r / min), and the steel bars are pulled into the inner frame 1 by the friction of the guide wheels 13 and move along the crossbar 12;

[0049] The geared motor is installed on the lower inner side of the inner frame 1 and drives the guide wheel 13 to rotate via belt, chain, or other means.

[0050] Straightening stage: When the steel bar reaches the straightening station, cylinder 4 is activated; the output end of cylinder 4 pushes out the crossbeam 7, which drives the upper and lower movable frames 8 to retract inward synchronously;

[0051] Three sets of straightening heads (cylinder end + movable frame ends) press the surface of the steel bar with a pressure of 50-80N / mm² to eliminate bending.

[0052] Output stage: The straightened steel bar continues to move forward to the cutting position, and the hydraulic shearing machine cuts it to a fixed length; the cut section of steel bar falls into the slide 9, and the slide 9 tilts downward due to the load, and the steel bar slides out automatically; after the steel bar has completely slid out, the slide 9 returns to the horizontal position under the action of the tension spring 11.

[0053] Compared with the prior art, the present invention has the following advantages:

[0054] This rebar straightening machine is configured with cylinder 4, straightening head 5, sleeve 6, crossbeam 7, movable frame 8, slide 9, fixed frame 10, and tension spring 11. The rebar passes over several crossbars 12. Then, to accommodate the thickness of the rebar, the output ends of the two sets of cylinders 4 push out. The straightening head 5 at the output end of cylinder 4 and the straightening head 5 at both ends of the movable frame 8 move synchronously, centering and pressing together to straighten the rebar. The positions of the two sets of straightening heads 5 are flexibly adjustable to adapt to straightening rebars of different thicknesses.

[0055] The inner frame 1 is also designed with a gravity conveying mechanism, which enables automatic downward output of straightened and cut steel bars. Specifically, after straightening, the steel bars are fed into the chute 9, and then this section of steel bar is cut off from the front by the machine. The steel bar's own weight drives the chute 9 to rotate downwards, stretching the tension spring 11. The steel bar then automatically slides down the chute 9 for output, and the chute 9 returns to a horizontal position under the action of the tension spring 11. The gravity-triggered mechanism of the chute 9 requires no additional power, has a fast average conveying speed, and the design of the chute 9 enables automatic gravity conveying.

Claims

1. A rebar straightening machine, characterized in that, It includes an inner frame (1) and an outer frame (2). The outer frame (2) is provided on the outside of the inner frame (1). The two sides of the outer frame (2) are fixedly connected with notches (3). A cylinder (4) is fixedly connected to the inner side of the notch (3), and a straightening head (5) is fixedly connected to the end of the output end of the cylinder (4). The inner side of the outer frame (2) is fixedly connected with several sleeves (6), the output end of the cylinder (4) is fixedly connected with a crossbeam (7), the top of the crossbeam (7) is fixedly connected with a movable frame (8) by several pins, and the two ends of the front of the movable frame (8) are fixedly connected with straightening heads (5). The rear of the movable frame (8) is movably connected to the sleeve (6), and the inner side of the inner frame (1) is movably connected to the slide groove (9), which is open at the top and both ends. The top of the inner frame (1) is fixedly connected to a fixing frame (10), and the fixing frame (10) is fixedly connected to the front of the slide (9) by a tension spring (11).

2. The rebar straightening machine as described in claim 1, characterized in that: The outer frame (2) spans the sides and top of the inner frame (1), and several crossbars (12) are fixedly connected to the inner side of the inner frame (1).

3. A rebar straightening machine as described in claim 2, characterized in that: The cylinder (4) is installed horizontally, and the end face of the straightening head (5) is an arc surface.

4. A rebar straightening machine as described in claim 3, characterized in that: The outer frame (2) is welded to the sleeve (6), and the crossbeam (7) is riveted to the end of the output end of the cylinder (4).

5. A rebar straightening machine as described in claim 4, characterized in that: The spacing of the movable frame (8) is adjustable. The movable frame (8) is divided into upper and lower layers. The material of the movable frame (8) is carbon steel.

6. A rebar straightening machine as described in claim 5, characterized in that: The cross-sectional shape of the slide (9) is U-shaped, the bending angle of the fixing frame (10) is ninety degrees, and the slide (9) is gravity-driven.

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