Auxiliary clamping device of horizontal steel bar bender

Abstract

The utility model relates to an auxiliary clamping device of a horizontal steel bar bender. The device comprises a clamping platform, a two-way lead screw mechanism arranged on the clamping platform, a pair of vertical clamping plates arranged at the two moving ends of the two-way lead screw mechanism respectively, a pneumatic connecting rod mechanism hinged to the clamping platform and a guide arm arranged at the rotating end of the pneumatic connecting rod mechanism. A U-shaped clamping gap allowing a reinforcing steel bar to penetrate through is formed between the clamping platform and the vertical clamping plates, the moving path of the guide arm passes through the reinforcing steel bar on the clamping platform, and the reinforcing steel bar is forced to be disengaged along a U-shaped opening of the U-shaped clamping gap. According to the auxiliary clamping device, the auxiliary clamping device is arranged between the two machining centers of the horizontal steel bar bender and is assisted by the vertical clamping plate with the adjustable position to clamp the middle section of the steel bar, and the turnover guide arm is used for guiding and separating the steel bar after the steel bar is bent. The phenomenon of deviation or sliding in the steel bar bending process is avoided, and meanwhile the machining precision and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar processing, in particular to an auxiliary clamping device for a horizontal steel bar bender. Background Technique

[0002] With the rapid development of high-speed railway and highway construction, due to the influence of complex and diverse geographical environments, many elevated bridges must be erected during the road construction process. The basic work of elevated bridges is to fabricate corresponding pile cages. Therefore, fabricating road and bridge pile cages with low cost, simplicity, and high efficiency is the common goal of construction parties and supervision parties. The beam stirrup forming and welding technology is a key link in fabricating pile cages. Beam stirrups are one of the commonly used connecting steel bars in engineering, which are used to connect structures such as beams and columns, and beams and walls, playing a role in enhancing the structural stiffness and stability. In the current process of fabricating beam stirrups, the bending process of the hooks at both ends of the beam stirrup is usually carried out using a horizontal steel bar bender.

[0003] A Chinese patent with the authorization announcement number CN106955948B discloses a steel bar bender, which includes a workbench, a working disk arranged on the workbench, and a stop iron shaft arranged on one side of the working disk. A clamping device for clamping steel bars is arranged at one end of the stop iron shaft away from the working disk; the clamping device includes a clamping member hinged along the vertical direction at one end of the stop iron shaft away from the working disk. The clamping member is arc-shaped, and its opening is not larger than the diameter of the steel bar; the clamping members are symmetrically arranged along the horizontal direction; by arranging the clamping members on the stop iron shaft, the steel bar can be stabilized in the middle of the clamping members, preventing the steel bar from moving in all directions; moreover, a receiving groove adapted to the shape of the steel bar is opened on the stop iron shaft, and a water bag is arranged on the side wall of the receiving groove. The force exerted by the steel bar on the receiving groove can be gradually increased to cause the water bag to deform, improving the stability of the steel bar on one side of the stop iron shaft, thereby improving the quality of steel bar bending.

[0004] The above-mentioned existing technical solutions have the following defects: When the above-mentioned steel bar bender processes beam stirrups, usually two devices are used to clamp and synchronously bend both ends of the steel bar at the same time. Due to the relatively simple clamping method of the steel bar bender, it is often difficult to achieve stable clamping of the steel bar. Also, since the middle of the steel bar is suspended, it is easy to cause the steel bar to deviate or slide during the bending process, thus affecting the processing accuracy and efficiency, and improvement is needed. Content of the Utility Model

[0005] The problem to be solved by the utility model is to provide an auxiliary clamping device for a horizontal steel bar bender aiming at the above-mentioned deficiencies in the prior art. By arranging it between the two processing centers of the horizontal steel bar bender, it can complete the clamping of the middle section of the steel bar and the guiding and separating after bending, while avoiding the deviation or sliding of the steel bar during the bending process, and being beneficial to the processing accuracy and efficiency.

[0006] The above utility model object of the utility model is achieved through the following technical solutions:

[0007] An auxiliary clamping device for a horizontal steel bar bending machine includes a clamping platform, a bidirectional screw mechanism arranged on the clamping platform, a pair of vertical clamping plates respectively arranged at two movable ends of the bidirectional screw mechanism, a pneumatic connecting rod mechanism hinged on the clamping platform, and a guide arm arranged at the rotating end of the pneumatic connecting rod mechanism. A U-shaped clamping gap for the steel bars to pass through is formed between the clamping platform and the pair of vertical clamping plates. The moving path of the guide arm passes through the steel bars on the clamping platform and forces the steel bars to detach along the U-shaped opening of the U-shaped clamping gap.

[0008] By adopting the above technical solution, when bending the same batch of steel bars, the pair of vertical clamps are moved closer to each other by driving the bidirectional screw mechanism until the width of the U-shaped clamping gap formed between the clamping platform and the vertical clamp is close to the diameter of the middle part of the steel bar, thereby achieving stable clamping of the steel bar, avoiding the phenomenon of offset or sliding during the bending process of the steel bar, and improving the processing accuracy and efficiency; after the steel bar is bent, the pneumatic connecting rod mechanism is started, and multiple pneumatic connecting rod mechanisms can be arranged in parallel to improve the support stability, so that the guide arm is flipped toward the direction away from the steel bar bending machine and abuts against the steel bar, and then continues to flip and force the steel bar to disengage along the U-shaped opening of the U-shaped clamping gap, thereby facilitating the removal of the processed steel bar without manual operation, thereby improving the convenience of operation; in this process, by arranging the auxiliary clamping device between the two processing centers of the horizontal steel bar bending machine, and assisting with the vertical clamping plate with adjustable position to complete the clamping of the middle section of the steel bar, and the flippable guide arm to complete the guide disengagement after the steel bar is bent, while avoiding the phenomenon of offset or sliding during the steel bar bending process, it is beneficial to processing accuracy and efficiency.

[0009] The utility model is further configured as follows: the bidirectional screw mechanism includes a bidirectional screw rod rotatably connected to the clamping platform, a pair of transmission nuts respectively threadedly connected to the threads at both ends of the bidirectional screw rod, and a sliding seat arranged on the transmission nut and slidably connected to the clamping platform, and the vertical clamping plate is arranged on the sliding seat.

[0010] By adopting the above technical solution, when the bidirectional screw is rotated, the two transmission nuts are moved closer to or away from each other through the threaded transmission between the transmission nut and the bidirectional screw, thereby driving the slide to slide on the clamping platform, thereby realizing the synchronous driving of the opposing clamps, making it easy to adjust the width of the U-shaped clamping gap according to the diameter of the steel bar.

[0011] The utility model is further configured as follows: the bidirectional screw mechanism also includes a gripping portion arranged at the end of the bidirectional screw.

[0012] By adopting the above technical solution, it is convenient to rotate the bidirectional lead screw, improving the operation convenience.

[0013] The present utility model is further configured as follows: a chute is formed on the surface of the sliding seat, a slide bar is provided on the vertical clamping plate and a plurality of locking bolts are inserted therethrough, the slide bar is slidably connected to the chute and can slide out along the opening of the chute, and the locking bolts are threadedly connected to the sliding seat and abut against the surface of the vertical clamping plate.

[0014] By adopting the above technical solution, the vertical clamping plate can slide out along the opening of the chute, facilitating the replacement or repair of the vertical clamping plate; at the same time, by tightening the locking bolts, the locking bolts abut against the surface of the vertical clamping plate, thereby fixing the vertical clamping plate and keeping the vertical clamping plate stable during the steel bar bending process, which is beneficial to improving the processing accuracy.

[0015] The present utility model is further configured as follows: a plurality of vertical rollers are rotatably connected to the vertical clamping plate, and these vertical rollers are arranged at intervals along the plate surface of the vertical clamping plate and are arranged opposite to the side surface of the steel bar on the clamping platform.

[0016] By adopting the above technical solution, the friction between the steel bar and the vertical rollers during the threading process is rolling friction, thereby reducing the resistance during the threading of the steel bar and improving the threading convenience.

[0017] The present utility model is further configured as follows: the pneumatic link mechanism includes a cylinder hinged to the clamping platform, a rotating shaft rotatably connected to the clamping platform, and a connecting rod hinged to the piston rod of the cylinder and arranged on the rotating shaft, and the guiding arm is arranged on the rotating shaft.

[0018] By adopting the above technical solution, when the piston rod of the cylinder expands and contracts, through the hinge cooperation between the connecting rod and the piston rod of the cylinder, the connecting rod drives the rotating shaft to rotate, and then drives the guiding arm to flip, thereby realizing the guiding and separating of the steel bar, and the operation is simple.

[0019] The present utility model is further configured as follows: a limiting groove is recessed at the end of the guiding arm close to the U-shaped clamping gap.

[0020] By adopting the above technical solution, during the movement of the guiding arm, the limiting groove can abut against the steel bar and play a supporting role for the steel bar, preventing the steel bar from separating from the clamping platform under the push of the guiding arm, and improving the processing stability.

[0021] The present utility model is further configured as follows: a guiding surface is provided on the side wall of the limiting groove close to the rotating end of the pneumatic link mechanism.

[0022] By adopting the above technical solution, the steel bar can smoothly break away from the limiting groove along the guiding surface under the pushing of the guiding arm, thereby improving the guiding effect of the guiding arm on the steel bar and enabling the steel bar to smoothly break away from the U-shaped clamping gap.

[0023] To sum up, the beneficial technical effects of the present utility model are as follows: by arranging the auxiliary clamping device between the two processing centers of the horizontal steel bar bender, and supplementing with a vertically adjustable clamping plate to complete the clamping of the middle section of the steel bar, and a rotatable guiding arm to complete the guiding and separation after the steel bar is bent, while avoiding the phenomenon of deviation or sliding during the steel bar bending process, it is beneficial to the processing accuracy and efficiency. Description of the Drawings

[0024] Figure 1 is the front view structural schematic diagram of the auxiliary clamping device of the horizontal steel bar bender of the present utility model.

[0025] Figure 2 is the connection relationship schematic diagram between the bidirectional lead screw mechanism and the vertical clamping plate of the present utility model.

[0026] Figure 3 is the connection relationship schematic diagram between the sliding seat and the vertical clamping plate of the present utility model.

[0027] Figure 4 is the rear view structural schematic diagram of the auxiliary clamping device of the horizontal steel bar bender of the present utility model.

[0028] In the figure, 1, clamping platform; 2, bidirectional lead screw mechanism; 21, bidirectional lead screw; 22, holding part; 23, transmission nut; 24, sliding seat; 241, chute; 3, vertical clamping plate; 31, slide bar; 32, locking bolt; 33, vertical rolling bar; 4, pneumatic link mechanism; 41, cylinder; 42, rotating shaft; 43, connecting rod; 5, guiding arm; 51, limiting groove; 52, guiding surface. Detailed Embodiments

[0029] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model clearer and easier to understand, the present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0030] Refer to Figure 1, which is an auxiliary clamping device for a horizontal steel bar bending machine disclosed in the utility model, comprises a clamping platform 1, a bidirectional screw mechanism 2 arranged on the clamping platform 1, a pair of vertical clamping plates 3 respectively arranged at two moving ends of the bidirectional screw mechanism 2, a pneumatic connecting rod mechanism 4 hinged on the clamping platform 1, and a guide arm 5 arranged at the rotating end of the pneumatic connecting rod mechanism 4. Among them, a U-shaped clamping gap for the steel bar to pass through is formed between the clamping platform 1 and the pair of vertical clamping plates 3, and the moving path of the guide arm 5 passes through the steel bar on the clamping platform 1, and forces the steel bar to be separated along the U-shaped opening of the U-shaped clamping gap.

[0031] Reference Figure 2 The bidirectional screw mechanism 2 includes a bidirectional screw rod 21 rotatably connected to the clamping platform 1, a gripping portion 22 disposed at the end of the bidirectional screw rod 21, a pair of transmission nuts 23 respectively threadedly connected to the threads at both ends of the bidirectional screw rod 21, and a slide 24 disposed on the transmission nut 23 and slidably connected to the clamping platform 1. When the bidirectional screw rod 21 is rotated, the two transmission nuts 23 are moved closer to or away from each other through the threaded transmission between the transmission nut 23 and the bidirectional screw rod 21, thereby driving the slide 24 to slide on the clamping platform 1, thereby realizing the synchronous driving of the opposing clamping plates 3, and facilitating the adjustment of the width of the U-shaped clamping gap according to the diameter of the steel bar.

[0032] Reference Figure 3 , wherein a slide groove 241 is provided on the surface of the slide seat 24, a slide bar 31 is provided on the vertical clamping plate 3, and a plurality of locking bolts 32 are penetrated therethrough, the slide bar 31 is slidably connected to the slide groove 241, and can be slid and disengaged along the opening of the slide groove 241, and the locking bolts 32 are threadedly connected to the slide seat 24, and abut against the surface of the vertical clamping plate 3. The above structure enables the vertical clamping plate 3 to be slid and disengaged along the opening of the slide groove 241, thereby facilitating the replacement or maintenance of the vertical clamping plate 3; at the same time, by tightening the locking bolts 32, the locking bolts 32 abut against the surface of the vertical clamping plate 3, thereby achieving the fixing of the vertical clamping plate 3, so that the vertical clamping plate 3 remains stable during the steel bar bending process, which is conducive to improving the processing accuracy.

[0033] In addition, three vertical rolling bars 33 are rotatably connected to the vertical clamping plate 3, and these vertical rolling bars 33 are arranged at intervals along the plate surface of the vertical clamping plate 3 and arranged opposite to the side of the steel bars on the clamping platform 1. The above structure allows rolling friction between the steel bars and the vertical rolling bars 33 during the threading process, thereby reducing the resistance during the threading of the steel bars and improving the threading convenience.

[0034] Reference Figure 4, the pneumatic link mechanism 4 includes a cylinder 41 hinged to the clamping platform 1, a rotating shaft 42 rotatably connected to the clamping platform 1, and a connecting rod 43 hinged to the piston rod of the cylinder 41 and arranged on the rotating shaft 42. The guiding arm 5 is arranged on the rotating shaft 42. When the piston rod of the cylinder 41 expands and contracts, through the hinge cooperation between the connecting rod 43 and the piston rod of the cylinder 41, the connecting rod 43 drives the rotating shaft 42 to rotate, and then drives the guiding arm 5 to flip, so as to realize the guiding and separating of the steel bar, and the operation is simple.

[0035] A limiting groove 51 is recessed at the end of the guiding arm 5 close to the U-shaped clamping gap, and a guiding surface 52 is arranged on the side wall of the limiting groove 51 close to the rotating end of the pneumatic link mechanism 4. During the movement of the guiding arm 5, the limiting groove 51 can abut against the steel bar and play a supporting role on the steel bar, preventing the steel bar from separating from the clamping platform 1 under the push of the guiding arm 5, and improving the processing stability. At the same time, the steel bar can smoothly separate from the limiting groove 51 along the guiding surface 52 under the push of the guiding arm 5, so as to improve the guiding effect of the guiding arm 5 on the steel bar and enable the steel bar to smoothly separate from the U-shaped clamping gap.

[0036] The implementation principle of this embodiment is as follows: When bending steel bars of the same batch, by driving the bidirectional lead screw mechanism 2, the pair of vertical clamping plates 3 approach each other until the width of the U-shaped clamping gap formed between the clamping platform 1 and the vertical clamping plates 3 is approximately equal to the diameter of the middle part of the steel bar, so as to realize the stable clamping of the steel bar, avoid the phenomenon of deviation or sliding during the bending process of the steel bar, and improve the processing accuracy and efficiency; After the steel bar is bent, by starting the pneumatic link mechanism 4, multiple pneumatic link mechanisms 4 can be arranged in parallel to improve the support stability, so that the guiding arm 5 flips towards the direction away from the horizontal steel bar bender and abuts against the steel bar, and then continues to flip and forces the steel bar to separate along the U-shaped opening of the U-shaped clamping gap, thereby facilitating the removal of the processed steel bar without manual operation and improving the operation convenience. During this process, by arranging the auxiliary clamping device between the two processing centers of the horizontal steel bar bender, and supplementing with the vertically adjustable clamping plate 3 to complete the clamping of the middle section of the steel bar, and the rotatable guiding arm 5 to complete the guiding and separating after the steel bar is bent, while avoiding the phenomenon of deviation or sliding during the bending process of the steel bar, it is beneficial to the processing accuracy and efficiency.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An auxiliary clamping device for a horizontal steel bar bending machine, characterized in that: The invention comprises a clamping platform (1), a bidirectional screw mechanism (2) arranged on the clamping platform (1), a pair of vertical clamping plates (3) respectively arranged at two movable ends of the bidirectional screw mechanism (2), a pneumatic connecting rod mechanism (4) hinged on the clamping platform (1), and a guide arm (5) arranged at the rotating end of the pneumatic connecting rod mechanism (4); a U-shaped clamping gap for steel bars to pass through is formed between the clamping platform (1) and the pair of vertical clamping plates (3); the moving path of the guide arm (5) passes through the steel bars on the clamping platform (1) and forces the steel bars to disengage along the U-shaped opening of the U-shaped clamping gap.

2. The auxiliary clamping device of a horizontal steel bar bending machine according to claim 1, characterized in that: The bidirectional screw mechanism (2) comprises a bidirectional screw (21) rotatably connected to the clamping platform (1), a pair of transmission nuts (23) respectively threadedly connected to the threads at both ends of the bidirectional screw (21), and a slide seat (24) arranged on the transmission nut (23) and slidably connected to the clamping platform (1), and the vertical clamping plate (3) is arranged on the slide seat (24).

3. The auxiliary clamping device of a horizontal steel bar bending machine according to claim 2 is characterized in that: The bidirectional screw mechanism (2) further comprises a gripping portion (22) arranged at the end of the bidirectional screw rod (21).

4. The auxiliary clamping device of a horizontal steel bar bending machine according to claim 2, characterized in that: A slide groove (241) is provided on the surface of the slide seat (24), a slide bar (31) is provided on the vertical clamp plate (3), and a plurality of locking bolts (32) are passed through the slide bar (31), the slide bar (31) is slidably connected to the slide groove (241), and can be slid and detached along the opening of the slide groove (241), and the locking bolts (32) are threadedly connected to the slide seat (24) and abut against the surface of the vertical clamp plate (3).

5. The auxiliary clamping device of a horizontal steel bar bending machine according to claim 1, characterized in that: A plurality of vertical rolling bars (33) are rotatably connected to the vertical clamping plate (3), and the vertical rolling bars (33) are arranged at intervals along the plate surface of the vertical clamping plate (3) and are arranged relative to the side surfaces of the steel bars on the clamping platform (1).

6. The auxiliary clamping device of a horizontal steel bar bending machine according to claim 1, characterized in that: The pneumatic connecting rod mechanism (4) comprises a cylinder (41) hinged on the clamping platform (1), a rotating shaft (42) rotatably connected to the clamping platform (1), and a connecting rod (43) hinged on the piston rod of the cylinder (41) and arranged on the rotating shaft (42), and the guide arm (5) is arranged on the rotating shaft (42).

7. The auxiliary clamping device of a horizontal steel bar bending machine according to claim 1, characterized in that: The end of the guide arm (5) close to the U-shaped clamping gap is recessed and provided with a limiting groove (51).

8. The auxiliary clamping device of a horizontal steel bar bending machine according to claim 7, characterized in that: A guide surface (52) is provided on the side wall of the limiting groove (51) close to the rotating end of the pneumatic connecting rod mechanism (4).

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