Reinforcing steel bar straightening device

Abstract

The utility model discloses a reinforcing steel bar straightening device, and belongs to the technical field of deformed steel bar machining equipment. Comprising an unwinding structure, a straightening structure and a guide cage, the unwinding structure comprises an unwinding base, a stand column vertically arranged on the unwinding base and a hanging rod arranged on the upper portion of the rear side of the stand column, the hanging rod is obliquely upwards arranged from front to back, and a steel bar coil is hung on the hanging rod in the front-back direction; the guide cage is arranged in the front-back direction, located in the front adjacent to the feeding port of the straightening structure and of a cage type cylindrical structure which is gradually reduced from front to back, the inner diameter of the front end of the guide cage is larger than or equal to 500 mm, the inner diameter of the rear end of the guide cage is smaller than or equal to 500 mm, and the distance between the guide cage and the unwinding structure is larger than or equal to 2 m. The steel bars are unreeled horizontally, so that the entanglement of the steel bars due to dead weight and unreeled steel bars is avoided; the guide cage is adopted to guide the steel bars into the straightening equipment, so that the steel bars enter the straightening equipment in a shape similar to a spiral cone, disordered swinging of the steel bars is avoided, straightening quality is improved, and complete production is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of threaded steel processing, and particularly relates to a steel bar straightening device. Background Art

[0002] Steel bars with a diameter of less than 12 mm are generally made into round coils for easy transportation. Before cutting, the round coils are generally put into coils and cold drawn to achieve the purpose of straightening.

[0003] A rebar coil is a hollow steel coil with many turns wound around a linear steel bar. When the steel bar is straightened, a single steel bar needs to be released from the coil for processing. At present, the rebar coil unwinding rack is mainly composed of a base, a rotating shaft and a turntable. The base is supported on the ground, the turntable is installed on the base, the rotating shaft is installed in the center of the turntable, and the rebar coil is horizontally mounted on the rotating shaft of the turntable.

[0004] For example, the patent with application number CN202010077787.7 discloses a steel bar equidistant cutting device, comprising: a steel bar unwinding device, a base, a steel bar straightening device and a steel bar cutting device; the steel bar unwinding device comprises a frame and a turntable rotatably arranged on the frame, and the turntable is used to hold the wound steel bars; the steel bar straightening device and the steel bar cutting device are respectively arranged on the base; the steel bar straightening device comprises a horizontal straightening component and a vertical straightening component, and the horizontal straightening component and the vertical straightening component are arranged closely in sequence.

[0005] The existing unwinding rack is set vertically, and the steel bar coil is vertically mounted on the unwinding rack. The steel bars are easily entangled with each other on the unwinding rack, resulting in unwinding failure. At the same time, there is usually a certain distance between the unwinding rack and the straightening equipment. The steel bars are prone to swing disorderly when entering the straightening equipment. During the straightening process, the steel bars are unstable and may bounce up when entering the straightening machine, which may easily cause steel bars to injure people, posing safety hazards. In addition, the processing area is messy and the construction safety cannot be guaranteed. Summary of the invention

[0006] In order to solve the above problems, the embodiment of the utility model provides a steel bar straightening device, which adopts horizontal unwinding to avoid entanglement of steel bars due to their own weight and loose coils; a guide cage is used to guide the steel bars into the straightening device, so that the steel bars enter the straightening device in a spiral cone shape, avoiding disorderly swinging of the steel bars, improving the straightening quality, and ensuring complete production. The technical solution is as follows:

[0007] The utility model embodiment provides a straightening device for steel bars, which includes a reeling structure 1, a straightening structure 3 and a guide cage 2 between the reeling structure 1 and the straightening structure 3, the reeling structure 1 includes a reeling base 11, a column 12 vertically arranged on the reeling base 11 and a hanging rod 13 on the upper rear side of the column 12, the hanging rod 13 is arranged obliquely upward from front to back, and the steel bar coil 4 is suspended on the hanging rod 13 along the front-to-back direction; the guide cage 2 is arranged along the front-to-back direction, and is located adjacent to the front of the feed port of the straightening structure 3, and is a cage-type cylindrical structure that gradually decreases from front to back, the inner diameter of the front end is greater than or equal to 500 mm, and the inner diameter of the rear end is less than or equal to 500 mm, and the distance between the reel and the reel 1 is greater than or equal to 2 m.

[0008] Among them, a support 21 is provided at the bottom of the guide cage 2 in the embodiment of the utility model, which is a conical cylinder with a larger front and a smaller rear, and includes a plurality of annular steel bars 22 and a plurality of latitudinal steel bars 23; the plurality of annular steel bars 22 are arranged side by side front and back, and they are all coaxially arranged with the guide cage 2, and their inner diameters decrease one by one from front to back; the latitudinal steel bars 23 are fixed on the inner or outer side of the annular steel bars 22, and they are arranged along the cone line of the conical cylinder, from the annular steel bars 22 at the front end to the annular steel bars 22 at the rear end.

[0009] Specifically, the latitudinal steel bars 23 in the embodiment of the utility model are welded and fixed to the outside of the annular steel bars 22 , and the number thereof is greater than or equal to 6; the number of the annular steel bars 22 is greater than or equal to 4.

[0010] The support 21 in the embodiment of the utility model includes a plurality of legs, and the left and right sides of the guide cage 2 are provided with a plurality of legs arranged side by side in front and back. The legs are arranged vertically and their upper parts are welded and fixed on the corresponding sides of the guide cage 2.

[0011] Among them, the straightening structure 3 in the embodiment of the utility model includes a frame 31, a plurality of straightening rollers 32 arranged side by side in front and back at the front of the frame 31, and a steel bar introduction ring 33 at the front end of the frame 31 and directly in front of the straightening roller 32; the steel bar introduction ring 33 is located directly behind the middle of the rear end of the guide cage 2 as a feed port, and is arranged obliquely upward from front to rear; a fixing rod 24 is provided in the front and rear directions at the rear end of the guide cage 2, and the fixing rod 24 can be adjusted front and back and is detachably arranged at the front of the frame 31; the steel bars 5 output by the guide cage 2 pass through the steel bar introduction ring 33 backwards, and then bypass the plurality of straightening rollers 32 in an S shape.

[0012] The unwinding base 11 in the embodiment of the utility model is arranged along the front-back direction and its position can be adjusted forward and backward; the column 12 is arranged on the upper front side of the unwinding base 11, and its upper end extends upward relative to the front end of the hanging rod 13; the hanging rod 13 is a round tube, and a telescopic rod 14 that can be telescoped along the direction in which it is located is provided at the rear end thereof, an oblique support rod 15 is provided between the lower front side thereof and the rear side of the column 12, and an oblique guide rod 16 is provided on the upper rear end thereof; the telescopic rod 14 is arranged along the direction in which the hanging rod 13 is located, Its rear end is higher than the front end top of the guide cage 2; the diagonal support rod 15 is arranged obliquely downward from back to front; the front end of the oblique guide rod 16 is welded and fixed to the upper side of the hanging rod 13, and it is arranged obliquely upward from front to back relative to the hanging rod 13, and its rear part is bent downward and the rear end is welded and fixed to the upper side of the rear end of the hanging rod 13; when the steel bar coil 4 is suspended on the hanging rod 13; the front side of the steel bar coil 4 is against the column 12, which is located above the unwinding base 11, and is located in front of the oblique guide rod 16.

[0013] Specifically, the telescopic rod 14, the oblique guide rod 16, the latitudinal steel bars 23, the circumferential steel bars 22 and the supporting legs in the embodiment of the utility model are all threaded steel bars.

[0014] Preferably, the guide cage 2 in the embodiment of the utility model is divided into a conical cylinder part and a straight cylinder part from front to back, the conical cylinder part is a conical cylinder that gradually becomes smaller from front to back and is provided with six annular steel bars 22, and the straight cylinder part is a cylinder arranged in the front-to-back direction and is provided with three annular steel bars 22.

[0015] Specifically, the distance between the unwinding structure 1 and the guide cage 2 in the embodiment of the utility model is 2-5m; the inner diameter of the front end of the guide cage 2 is 500-1000mm, the inner diameter of the rear end is 300-500mm, and the length is 1-3m.

[0016] The beneficial effects of the technical solution provided by the embodiment of the utility model are as follows: the embodiment of the utility model provides a straightening device for steel bars, in which the steel bars are unwound horizontally to avoid entanglement of the steel bars due to their own weight and loose coils; a guide cage (cooperating with the unwinding structure) is used to guide the steel bars into the straightening device, so that the steel bars enter the straightening device in a spiral cone shape to avoid disorderly swinging of the steel bars, improve the straightening quality, and ensure production safety. In addition, the guide cage can also scrape off the oxide scale on the surface of the steel bars. Local materials can be used to prepare some parts with steel bar products. The position of the unwinding base, the telescopic length of the telescopic rod and / or the position of the guide cage can be adjusted to accommodate steel bar coils of different specifications (let the steel bars basically hang in the air, let the steel bars be loosely coiled and pre-straightened). BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a steel bar straightening device in an embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the unwinding structure;

[0019] Figure 3 It is a structural schematic diagram of the guide cage.

[0020] In the figure: 1 unwinding structure, 2 guide cage, 3 straightening structure, 4 steel bar coil, 5 steel bar;

[0021] 11 unwinding base, 12 upright column, 13 hanging rod, 14 telescopic rod, 15 oblique support rod, 16 oblique guide rod;

[0022] 21 support, 22 annular reinforcement, 23 latitudinal reinforcement, 24 fixing rod;

[0023] 31: frame, 32: straightening roller, 33: steel bar introduction ring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] See also Figure 1-3 Embodiment 1 provides a straightening device for steel bars, which includes an unwinding structure 1, a guide cage 2, and a straightening structure 3. The straightening structure 3 is consistent with the prior art, and the guide cage 2 is located in front of the straightening structure 3 and is arranged opposite to the straightening structure 3. The unwinding structure 1 is located in front of the guide cage 2, and there is a certain distance between the unwinding structure 1 and the guide cage 2.

[0027] The unwinding structure 1 includes an unwinding base 11, a column 12, a hanging rod 13, a telescopic rod 14, an oblique support rod 15, an oblique guide rod 16, etc. The unwinding base 11 is arranged in the front-to-back direction, and its position can be adjusted in the front-to-back direction to adjust the distance between the steel bar coil 4 and the guide cage 2 (to ensure that the steel bars 5 drawn out of the steel bar coil 4 are appropriately unwound and do not fall on the ground as much as possible). Specifically, it can be a rectangular frame arranged in the front-to-back direction. The column 12 is arranged vertically, and is arranged on the upper side of the front part of the unwinding base 11. Its upper end extends upward relative to the front end of the hanging rod 13. Specifically, it can be a square tube or a round tube. The front end of the suspension rod 13 is fixed to the upper rear side of the column 12. It is set obliquely upward from front to back (with a small inclination angle, such as less than 30°). It is a round tube, and its rear end is provided with a telescopic rod 14 that can be telescoped along the direction in which it is located. A diagonal brace rod 15 is provided between the lower side of its front part and the rear side of the column 12, and an oblique guide rod 16 is provided on the upper side of its rear end (to prevent the steel bar coil 4 from sliding out of the suspension rod 13, and to allow the steel bar 5 to slide upward to reduce the possibility of the steel bar 5 falling to the ground). The telescopic rod 14 is set along the direction of the suspension rod 13, and its rear end is higher than the front end top of the guide cage 2. It is inserted into the rear part of the suspension rod 13 and fixed by a corresponding locking member (which is a conventional structure in the field, and detailed description is omitted in this embodiment). The diagonal brace rod 15 is set obliquely downward from back to front, and its two ends are respectively welded and fixed to the column 12 and the suspension rod 13. The front end of the oblique guide rod 16 is welded and fixed to the upper side (specifically, the upper side of the rear part) of the hanging rod 13, and it is arranged obliquely upward from front to back relative to the hanging rod 13, and its rear part is bent downward (specifically, it is bent vertically downward, and the distance between the top of the bent part and the hanging rod 13 is 3-5cm) and the rear end is welded and fixed to the upper side of the rear end of the hanging rod 13, and it forms a triangle with the hanging rod 13. The steel bar coil 4 is suspended on the hanging rod 13 in the front-to-back direction, and its front side is against the column 12, which is located above the unwinding base 11 and in front of the oblique guide rod 16.

[0028] Among them, the guide cage 2 is arranged in the front-to-back direction, which is located just in front of the feed port of the straightening structure 3, and is located adjacent to the feed port of the straightening structure 3. It is a cage-type cylindrical structure (specifically a conical cylinder) that gradually decreases from front to back, and a support 21 is provided at the bottom, which includes a plurality of annular steel bars 22 and a plurality of weft steel bars 23. The inner diameter of the front end is greater than or equal to 500mm (preferably greater than 700mm) to ensure that the steel bars 5 enter, and the inner diameter of the rear end is less than or equal to 500mm (preferably less than 400mm) to ensure that the steel bars 5 are pre-tensioned to a certain extent. The distance between it and the unwinding structure 1 is greater than or equal to 2m to ensure that the steel bars 5 are slightly straightened and arranged between the unwinding structure 1 and the guide cage 2 (not entangled, so that the distance between the circles becomes larger to form a spiral shape).

[0029] Among them, a plurality of annular steel bars 22 in the embodiment of the utility model are arranged side by side in the front and back, and they are all arranged coaxially with the guide cage 2 (arranged in the front and back direction), and their inner diameters decrease one by one from the front to the back. The weft steel bars 23 are fixed on the inner side or the outer side of the annular steel bars 22, and they are arranged along the cone line of the cone cylinder (arranged obliquely, gradually approaching the axis of the guide cage 2), from the annular steel bars 22 at the front end to the annular steel bars 22 at the rear end. Specifically, the weft steel bars 23 are welded and fixed on the outer side of the annular steel bars 22, and the number of them is greater than or equal to 6. The number of annular steel bars 22 is greater than or equal to 4, the inner diameter of the annular steel bars 22 at the front end is greater than 700mm, and the inner diameter of the annular steel bars 22 at the rear end is less than 400mm. Among them, the support 21 includes a plurality of legs, and a plurality of legs are arranged side by side in the front and back on both sides of the guide cage 2. The legs are arranged vertically and their upper parts are welded and fixed on the corresponding sides of the guide cage 2. Specifically, the upper ends of the legs are welded and fixed on the outer sides of the left and right sides of the annular steel bars 22.

[0030] Among them, the straightening structure 3 in the embodiment of the utility model includes a frame 31, a plurality of straightening rollers 32 arranged side by side at the front of the frame 31, a steel bar introduction ring 33 at the front of the frame 31 and directly in front of the straightening roller 32, and other straightening structures at the rear of the frame 31. The steel bar introduction ring 33 is located directly behind the middle of the rear end of the guide cage 2 as a feed port, and is arranged obliquely upward from front to back (slightly inclined, with an inclination angle of less than 30°). The rear end of the guide cage 2 is provided with a fixing rod 24 along the front-to-back direction, and the fixing rod 24 can be adjusted front and back and is detachably arranged at the front of the frame 31. Specifically, the fixing rod 24 is a screw rod, on which two nuts are arranged; the front end of the frame 31 is provided with a ring sleeve along the front-to-back direction. The fixing rod 24 passes through the ring sleeve backwards and is locked by two nuts, and the two nuts are respectively located on the front and rear sides of the ring sleeve. Loosening the nuts can adjust the guide cage 2 front and back (adapt to different steel bar coils 4) and remove the guide cage 2 (replace the guide cage 2 (the inner side will be worn) and clean the oxide scale). The steel bar 5 outputted from the guide cage 2 passes through the steel bar introduction ring 33 backward (slanting upward from front to back, the steel bar will slightly hang down), and then passes around the plurality of straightening rollers 32 in an S shape, which is similar to the prior art.

[0031] Example 2

[0032] Embodiment 2 provides a steel bar straightening device, the structure of which is basically the same as that of embodiment 1, except that the telescopic rod 14, the oblique guide rod 16, the latitudinal steel bar 23, the circumferential steel bar 22 and the support legs in this embodiment are all threaded steel bars. The threaded steel bars are processed from the steel bars 5, so some parts of this patent can be obtained on site, which is low in cost.

[0033] Example 3

[0034] Embodiment 3 provides a steel bar straightening device, the structure of which is basically the same as that of embodiment 1, except that: the steel bar coil 4 in this embodiment is of common specifications (diameter is about 1.0-1.1m). The distance between the unwinding structure 1 and the guide cage 2 is 2-5m. The inner diameter of the front end of the guide cage 2 is 500-1000mm, the inner diameter of the rear end thereof is 300-500mm, and the length thereof is 1-3m.

[0035] Example 4

[0036] Embodiment 4 provides a steel bar straightening device, and its structure is basically the same as that of embodiment 1, except that: the guide cage 2 in this embodiment is divided into a conical cylinder portion and a straight cylinder portion from front to back. The conical cylinder portion is a conical cylinder that gradually becomes smaller from front to back, and is provided with six annular steel bars 22 (used as a friction device), and the inner diameter of the rear end is the same as the inner diameter of the straight cylinder portion. The straight cylinder portion is a cylinder arranged in the front-to-back direction and is provided with three annular steel bars 22. The nine annular steel bars 22 are basically evenly spaced.

[0037] Working principle: The steel bar 5 enters the guide cage 2 through the large opening at the front end of the guide cage 2. The steel bar 5 rubs and compresses against the inner side of the friction device in a spiral cone shape (gradually close to the axis of the guide cage 2). During the stretching process, the steel bar 5 is forced to pass through the guide cage 2 under the action of tension, and is continuously frictionally compressed by the friction device in the conical cylinder. The bending diameter of the steel bar wire rod gradually decreases, and after being forced to be compressed and straightened by the friction device in the straight cylinder, the bends in different directions before entering the straightening structure 3 have been basically straightened.

[0038] The above description is only a preferred 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 steel bar straightening device, comprising a reel unwinding structure (1) and a straightening structure (3) behind it, characterized in that: It also includes a guide cage (2) between the unwinding structure (1) and the straightening structure (3), wherein the unwinding structure (1) includes an unwinding base (11), a column (12) vertically arranged on the unwinding base (11), and a hanging rod (13) at the upper rear side of the column (12), wherein the hanging rod (13) is arranged obliquely upward from front to back, and the steel bar coil (4) is hung on the hanging rod (13) along the front-to-back direction; the guide cage (2) is arranged along the front-to-back direction, and is located adjacent to the front of the feed port of the straightening structure (3), and is a cage-type cylindrical structure that gradually decreases from front to back, and the inner diameter of the front end is greater than or equal to 500 mm, and the inner diameter of the rear end is less than or equal to 500 mm, and the distance between the guide cage and the unwinding structure (1) is greater than or equal to 2 m.

2. The steel bar straightening device according to claim 1, characterized in that: A support (21) is provided at the bottom of the guide cage (2), which is a conical cylinder with a larger front and a smaller rear, and comprises a plurality of annular steel bars (22) and a plurality of latitudinal steel bars (23); the plurality of annular steel bars (22) are arranged side by side in front and back, and are all arranged coaxially with the guide cage (2), and their inner diameters decrease one by one from front to back; the latitudinal steel bars (23) are fixed on the inner side or the outer side of the annular steel bars (22), and are arranged along the cone line of the conical cylinder, from the annular steel bars (22) at the front end to the annular steel bars (22) at the rear end.

3. The steel bar straightening device according to claim 2, characterized in that: The latitudinal steel bars (23) are welded and fixed on the outside of the annular steel bars (22), and the number of the latitudinal steel bars (23) is greater than or equal to 6; the number of the annular steel bars (22) is greater than or equal to 4.

4. The steel bar straightening device according to claim 2, characterized in that: The support (21) comprises a plurality of legs, and the left and right sides of the guide cage (2) are both provided with a plurality of legs arranged side by side in a front-to-back manner. The legs are arranged vertically and their upper parts are welded and fixed on the corresponding sides of the guide cage (2).

5. The steel bar straightening device according to claim 1, characterized in that: The straightening structure (3) comprises a frame (31), a plurality of straightening rollers (32) arranged side by side at the front of the frame (31), and a steel bar introduction ring (33) at the front of the frame (31) and directly in front of the straightening rollers (32); the steel bar introduction ring (33) is located directly behind the middle of the rear end of the guide cage (2) as a feed port, and is arranged obliquely upward from front to back; a fixing rod (24) is provided at the rear end of the guide cage (2) in the front-to-back direction, and the fixing rod (24) can be adjusted forward and backward and is detachably arranged at the front of the frame (31); the steel bars (5) output from the guide cage (2) pass through the steel bar introduction ring (33) backward, and then bypass the plurality of straightening rollers (32) in an S shape.

6. The steel bar straightening device according to claim 4, characterized in that: The unwinding base (11) is arranged in the front-to-back direction and its position can be adjusted in the front-to-back direction; the upright post (12) is arranged on the upper front side of the unwinding base (11), and its upper end extends upward relative to the front end of the hanging rod (13); the hanging rod (13) is a round tube, and its rear end is provided with a telescopic rod (14) that can be telescoped along the direction in which it is located, and an oblique support rod (15) is provided between the lower front side and the rear side of the upright post (12), and an oblique guide rod (16) is provided on the upper rear side of the rear end; the telescopic rod (14) is arranged in the direction in which the hanging rod (13) is located, and its rear end is relatively close to the guide cage. (2) has a high top at the front end; the diagonal support rod (15) is arranged diagonally downward from back to front; the front end of the diagonal guide rod (16) is welded and fixed to the upper side of the hanging rod (13), and it is arranged diagonally upward from front to back relative to the hanging rod (13), and its rear part is bent downward and the rear end is welded and fixed to the upper side of the rear end of the hanging rod (13); when the steel bar coil (4) is hung on the hanging rod (13); the front side of the steel bar coil (4) is against the column (12), which is located above the unwinding base (11) and in front of the diagonal guide rod (16).

7. The steel bar straightening device according to claim 6, characterized in that: The telescopic rod (14), the oblique guide rod (16), the latitudinal steel bars (23), the circumferential steel bars (22) and the supporting legs are all threaded steel bars.

8. The steel bar straightening device according to claim 2, characterized in that: The guide cage (2) is divided into a conical cylinder portion and a straight cylinder portion from front to back, the conical cylinder portion is a conical cylinder that gradually becomes smaller from front to back and is provided with six annular steel bars (22), and the straight cylinder portion is a cylinder arranged in a front-to-back direction and is provided with three annular steel bars (22).

9. The steel bar straightening device according to claim 1, characterized in that: The distance between the unwinding structure (1) and the guide cage (2) is 2-5m; the inner diameter of the front end of the guide cage (2) is 500-1000mm, the inner diameter of the rear end is 300-500mm, and the length is 1-3m.

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