Coated reinforcing bar bending tooling

Abstract

The application relates to the technical field of reinforcing bar bending, and particularly discloses a coating reinforcing bar bending tool, which comprises a base and a movable seat, the left and right sides of the base are fixedly connected with fixed bending sleeves, the upper back of the base is fixedly connected with a connecting lug, the lower back of the movable seat is fixedly connected with a movable lug, the movable lug is slidingly connected to the inner side of the connecting lug, the movable seat is a hollow shell, and the left and right sides of the movable seat are slidingly connected with telescopic blocks. The movable bending sleeve capable of being transversely adjusted is arranged, the adaptability of the equipment to different wide-distance keel reinforcing bars is effectively improved, specifically, a rotating knob drives a threaded rod to drive a trapezoidal block to move up and down, the two telescopic blocks are synchronously telescoped by using a slope structure, and the distance between the movable bending sleeve and the fixed bending sleeve can be accurately adjusted. The design can match different wide-distance coating reinforcing bars without replacing molds, and the preparation time and tool cost are significantly reduced.

Description

Technical Field

[0001] This application relates to the field of steel bar bending technology, and in particular to a tooling for bending coated steel bars. Background Technology

[0002] To enhance the corrosion resistance of reinforcing bars and extend the service life of structures, coated reinforcing bars, such as epoxy resin coated reinforcing bars and galvanized reinforcing bars, are increasingly used in engineering projects. In ballastless track construction, coated reinforcing bars are generally bent on-site. However, ordinary bending tools can easily damage the coating, affecting corrosion resistance. Therefore, specialized bending tools are needed for on-site cold bending of the coated reinforcing bars to ensure the coating remains intact at the bend. The working method typically involves using a fixed bending mandrel and a movable pressure block to forcefully shape and bend the reinforcing bars. Existing reinforcing bar bending equipment is usually designed for specific widths of reinforcing bars. When bending reinforcing bars of different widths, the entire set of molds must be changed, resulting in cumbersome operation, long preparation time, reduced construction efficiency, and increased equipment maintenance and mold management costs. Utility Model Content

[0003] The purpose of this utility model is to provide a tooling for bending coated steel bars, which solves the problem of poor applicability of steel bar bending tools.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a coated steel bar bending fixture, comprising a base and a movable seat. Fixed bend sleeves are fixedly connected to both sides of the base. A connecting lug is fixedly connected to the upper back of the base. A movable lug is fixedly connected to the lower back of the movable seat. The movable lug is slidably connected to the inner side of the connecting lug. The movable seat is a hollow shell. Telescopic blocks are slidably connected to both sides of the movable seat, and the telescopic blocks penetrate the movable seat. A movable bend sleeve is fixedly connected to the side of the telescopic block outside the movable seat. An inclined surface is provided on the side of the telescopic block inside the movable seat. A trapezoidal block is slidably connected between the inclined surfaces of the two telescopic blocks. An I-beam pin is rotatably connected to the top of the trapezoidal block. A threaded rod is fixedly connected to the top of the I-beam pin. The threaded rod penetrates the movable seat and is threadedly connected to the movable seat.

[0005] Preferably, a hollow sleeve is inserted into the interior of both the movable ear and the connecting ear, and a stop bar is threadedly connected to both sides of the hollow sleeve. The movable ear and the connecting ear can rotate around the hollow sleeve as an axis, and then the movable bend sleeve on the movable seat rotates accordingly, which can bend the steel bar through the stop bar.

[0006] Preferably, the hollow sleeve is externally fixedly connected to two retaining rings, and the two retaining rings respectively contact the left and right sides of the connecting lug. The hollow sleeve is axially limited by the retaining rings.

[0007] Preferably, the position of the movable sleeve corresponds to the position of the fixed sleeve. The bending direction of the movable sleeve is opposite to that of the bent portion of the fixed sleeve.

[0008] Preferably, a dovetail block is fixedly connected to the side of the trapezoidal block, and the dovetail block is slidably connected to the inclined surface of the telescopic block. A dovetail groove is formed on the inclined surface of the telescopic block, and the dovetail block is located within the dovetail groove. The trapezoidal block and the telescopic block can be linked together through the dovetail block and the dovetail groove.

[0009] Preferably, a knob is fixedly connected to the top end of the threaded rod, and the circumferential surface of the knob is provided with anti-slip texture. The user can rotate the threaded rod by turning the knob.

[0010] Preferably, a handle is fixedly connected to the top of the movable seat, and the upper part of the handle is bent. The handle makes it easy for the user to rotate the movable seat.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model effectively improves the adaptability of the equipment to keel rebars of different widths by setting a laterally adjustable movable sleeve. Specifically, rotating the knob drives the threaded rod to move the trapezoidal block up and down, and the inclined structure pushes the telescopic blocks on both sides to extend and retract synchronously, so that the distance between the movable sleeve and the fixed sleeve can be precisely adjusted. This design can match coated rebars of different widths without changing the mold, significantly reducing preparation time and tooling costs.

[0013] 2. This utility model adopts a hinged flipping structure combined with a detachable stop bar, achieving high efficiency and safety in the rebar bending process. The movable ear and the connecting ear are hinged by a hollow sleeve and limited by a retaining ring to ensure the stability of the rotating trajectory of the movable seat. During bending, the rebar is placed between the fixed bend sleeve and the movable bend sleeve, and the root is limited by the stop bar. The bending is completed in one go with the rotating seat, effectively preventing the rebar from slipping. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of this utility model;

[0015] Figure 2 This is a perspective view of the overall structure of this utility model;

[0016] Figure 3 This utility model Figure 1 A partial structural front sectional view;

[0017] Figure 4 This utility model Figure 1 A partial structural rear sectional view;

[0018] Figure 5 This utility model Figure 4 Enlarged view of point A;

[0019] Figure 6 This utility model Figure 3 A partial structural diagram;

[0020] Figure 7 This utility model Figure 2 A schematic diagram of the hollow sleeve structure.

[0021] In the diagram: 1. Base; 101. Fixed bend sleeve; 2. Movable seat; 3. Connecting ear; 4. Movable ear; 5. Hollow sleeve; 6. Stop bar; 7. Stop ring; 8. Telescopic block; 9. Movable bend sleeve; 10. Trapezoidal block; 11. Dovetail block; 12. I-beam pin; 13. Threaded rod; 14. Knob; 15. Handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 A rebar bending fixture includes a base 1 and a movable seat 2. Fixed bend sleeves 101 are fixedly connected to both sides of the base 1. A connecting lug 3 is fixedly connected to the upper back of the base 1, and a movable lug 4 is fixedly connected to the lower back of the movable seat 2. The movable lug 4 is slidably connected to the inner side of the connecting lug 3. A hollow sleeve 5 is inserted into the interior of both the movable lug 4 and the connecting lug 3. A stop bar 6 is threadedly connected to both sides of the hollow sleeve 5. The movable lug 4 and the connecting lug 3 can rotate around the hollow sleeve 5 as an axis. The movable bend sleeve 9 on the movable seat 2 then rotates accordingly, bending the rebar through the stop bar 6. Two retaining rings 7 are fixedly connected to the outside of the hollow sleeve 5, and the two retaining rings 7 contact the left and right sides of the connecting lug 3 respectively. The hollow sleeve 5 is axially limited by the retaining rings 7.

[0024] Please see Figure 3 , Figure 6The movable base 2 is a hollow shell. Telescopic blocks 8 are slidably connected to both sides of the movable base 2, and the telescopic blocks 8 penetrate the movable base 2. A movable sleeve 9 is fixedly connected to the side of the telescopic block 8 outside the movable base 2, and the position of the movable sleeve 9 corresponds to the position of the fixed sleeve 101. The bending direction of the movable sleeve 9 is opposite to that of the bent portion of the fixed sleeve 101. An inclined surface is provided on the side of the telescopic block 8 inside the movable base 2. A trapezoidal block 10 is slidably connected between the inclined surfaces of the two telescopic blocks 8. A dovetail block 11 is fixedly connected to the side of the trapezoidal block 10, and the dovetail block 11 is slidably connected to the inclined surface of the telescopic block 8. A dovetail groove is formed on the inclined surface of the telescopic block 8, and the dovetail block 11 is located within the dovetail groove. The trapezoidal block 10 and the telescopic block 8 can be linked through the dovetail block 11 and the dovetail groove. An I-beam pin 12 is rotatably connected to the top of the trapezoidal block 10. A threaded rod 13 is fixedly connected to the top of the I-beam pin 12, passing through the movable seat 2 and connected to it by threads. A knob 14 is fixedly connected to the top of the threaded rod 13, and the circumferential surface of the knob 14 is provided with anti-slip texture. The user can rotate the threaded rod 13 by turning the knob 14. A handle 15 is fixedly connected to the top of the movable seat 2, and the upper part of the handle 15 is bent. The handle 15 facilitates the user to rotate the movable seat 2.

[0025] The specific implementation process of this utility model is as follows: In use, firstly, according to the width of the coated steel keel to be bent, adjust the distance between the two movable sleeves 9. The operator rotates the knob 14 located on the top of the movable seat 2, which drives the threaded rod 13 to rotate. Since the threaded rod 13 is threadedly connected to the movable seat 2, the rotational motion is converted into the linear lifting motion of the trapezoidal block 10 at the bottom of the threaded rod 13. The inclined surfaces on both sides of the trapezoidal block 10, through the dovetail block 11 that slides with it and the inclined surface on the inner side of the telescopic block 8, decompose the downward force into a horizontal force that pushes the two telescopic blocks 8 to move in opposite directions, thereby causing the telescopic blocks 8 to drive the movable sleeves. 9 extends outward synchronously; conversely, rotating knob 14 in the opposite direction raises trapezoidal block 10. Under the action of gravity or external resistance, telescopic block 8 retracts inward, thereby reducing the distance between movable bend sleeve 9. This adjustment ensures that a bending space precisely matching the specifications of the reinforcing bar is formed between movable bend sleeve 9 and fixed bend sleeve 101 on base 1. Then, the reinforcing bar is passed between fixed bend sleeve 101 and movable bend sleeve 9. The operator holds handle 15 at the top of movable seat 2 and then flips movable seat 2. This force drives movable seat 2 to rotate around the hollow sleeve 5 connected to base 1 until it bends again at stop bar 6.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for bending coated steel bars, comprising a base (1) and a movable seat (2), characterized in that... Fixed bend sleeves (101) are fixedly connected to both the left and right sides of the base (1). Connecting ears (3) are fixedly connected to the upper back of the base (1). Movable ears (4) are fixedly connected to the lower back of the movable seat (2). The movable ears (4) are slidably connected to the inner side of the connecting ears (3). The movable seat (2) is a hollow shell. Telescopic blocks (8) are slidably connected to both the left and right sides of the movable seat (2). The telescopic blocks (8) are set through the movable seat (2). Movable bend sleeves (9) are fixedly connected to the side of the telescopic blocks (8) outside the movable seat (2). An inclined surface is set on the side of the telescopic blocks (8) inside the movable seat (2). A trapezoidal block (10) is slidably connected between the inclined surfaces of the two telescopic blocks (8). An I-pin (12) is rotatably connected to the top of the trapezoidal block (10). A threaded rod (13) is fixedly connected to the top of the I-pin (12). The threaded rod (13) passes through the movable seat (2) and is threadedly connected to the movable seat (2).

2. The tooling for bending coated steel bars according to claim 1, characterized in that: Hollow sleeves (5) are inserted into the interior of the movable ear (4) and the connecting ear (3), and the left and right sides of the hollow sleeves (5) are connected to the stop rods (6) by threads.

3. The coating steel bar bending fixture according to claim 2, characterized in that: The hollow sleeve (5) has two retaining rings (7) fixedly connected to its exterior, and the two retaining rings (7) are respectively in contact with the left and right sides of the connecting ear (3).

4. The tooling for bending coated steel bars according to claim 1, characterized in that: The position of the movable sleeve (9) corresponds to the position of the fixed sleeve (101).

5. The tooling for bending coated steel bars according to claim 1, characterized in that: The trapezoidal block (10) is fixedly connected to a dovetail block (11) on its side, and the dovetail block (11) is slidably connected to the inclined surface of the telescopic block (8).

6. The tooling for bending coated steel bars according to claim 1, characterized in that: A knob (14) is fixedly connected to the top of the threaded rod (13), and the circumferential surface of the knob (14) is provided with anti-slip texture.

7. The tooling for bending coated steel bars according to claim 1, characterized in that: The top of the movable seat (2) is fixedly connected to a handle (15), and the upper part of the handle (15) is bent.

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