A reinforcing bar bending auxiliary clamping device

Abstract

The application belongs to the technical field of building steel bending equipment, and particularly relates to a reinforcing steel bar bending auxiliary clamping device, which comprises a bending fixing die, a positioning notch is arranged on the bending fixing die, a clamping head is arranged in the positioning notch, the clamping head rotates to clamp the reinforcing steel bar, a clamping rotating shaft is connected to the lower end of the clamping head, the clamping rotating shaft is driven to rotate through a gear and rack mechanism, a supporting sleeve is connected to the lower surface of the bending fixing die, the supporting sleeve is fixed and does not rotate, an outer ring of the bending fixing die is provided with a rotating disc which rotates around the bending fixing die, a bending head is arranged on the upper end surface of the rotating disc, a connecting sleeve is connected to the lower end of the rotating disc through an end surface spline, and the connecting sleeve is driven to rotate through a motor. The clamping device has the advantages of compact structure, small volume, small occupied space, installation on the reinforcing steel bar bending equipment, precise bending, more reserved space and convenience in production.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building steel bending equipment, in particular to a reinforcing steel bar bending auxiliary clamping device. BACKGROUND

[0002] The reinforcing steel bar bending equipment used in the current construction industry will clamp the reinforcing steel bar when bending to prevent the reinforcing steel bar from running out of position due to the pulling force during bending, causing dimensional errors. Therefore, a clamping device needs to be installed on the reinforcing steel bar bending equipment. However, the existing clamping mechanism has certain defects. Since the clamping mechanism is a separate device unit, it occupies a certain space of the equipment structure, limiting the bending processing of certain shapes. SUMMARY

[0003] In order to overcome the deficiencies in the prior art, the present application provides a reinforcing steel bar bending auxiliary clamping device.

[0004] The present application is realized by the following technical scheme: a reinforcing steel bar bending auxiliary clamping device, comprising a bending fixed mold, a positioning slot is arranged on the bending fixed mold, a clamping head is arranged in the positioning slot, the clamping head rotates to clamp the reinforcing steel bar, a clamping rotating shaft is connected to the lower end of the clamping head, the clamping rotating shaft is driven to rotate through a gear and rack mechanism, a support sleeve is connected to the lower surface of the bending fixed mold, the support sleeve is fixed and does not rotate, a rotating disc is arranged on the outer circle of the bending fixed mold and rotates around the bending fixed mold, a bending head is arranged on the upper end surface of the rotating disc, a connecting sleeve is connected to the lower end of the rotating disc through an end face spline, and the connecting sleeve is driven to rotate by a motor.

[0005] In the above scheme, the clamping rotating shaft is rotatably arranged in the support sleeve, and the support sleeve is rotatably arranged in the connecting sleeve.

[0006] In the above scheme, a rotating gear is arranged at the bottom end of the clamping rotating shaft, a pushing rack is arranged beside the rotating gear, the rotating gear and the pushing rack are engaged, and the pushing rack is connected to a hydraulic cylinder.

[0007] In the above scheme, a gear box is arranged on the lower surface of the rotating disc, the connecting sleeve penetrates the middle part of the gear box, the outer circle of the connecting sleeve is connected to a transmission gear in the gear box, and the transmission gear is driven to rotate by the motor.

[0008] In the above scheme, a base plate is arranged on the lower surface of the clamping rotating shaft, a fixed mold telescopic cylinder is arranged in the middle of the base plate, the piston rod of the fixed mold telescopic cylinder is connected to the clamping rotating shaft, a rotating disc telescopic cylinder is arranged at each end of the base plate, a clamping groove is arranged on the outer circle of the connecting sleeve, a clamping plate is connected to the clamping groove, and the two ends of the clamping plate are connected to the piston rods of the rotating disc telescopic cylinders through jacks.

[0009] In the scheme, the curved fixed mold is circular, the positioning notch is a radial through U-shaped cross-section through groove, the inner circle of the circular curved fixed mold is provided with the clamping head, and the clamping head is also provided with the same U-shaped through groove.

[0010] In the scheme, the upper end surface of the clamping rotating shaft is provided with a square counterbore, and the lower end of the clamping head is provided with a square column matched with the square counterbore.

[0011] Compared with the prior art, the steel bar bending auxiliary clamping device has the following beneficial effects:

[0012] 1. The clamping device is compact in structure, small in size, small in space occupation, and can be installed on a steel bar bending device to realize precise bending and reserve more space for production.

[0013] 2. The clamping head of the clamping device is inserted with the clamping rotating shaft through the square column, so that one set of clamping device can be used for bending steel bars of different sizes, and the application range is large, thereby saving the investment in production equipment. DETAILED DESCRIPTION

[0014] Figure 1 is a perspective structural schematic view of the steel bar bending auxiliary clamping device.

[0015] Figure 2 is Figure 1 A-A sectional view in the figure.

[0016] Figure 3 is Figure 1 B-B sectional view in the figure.

[0017] In the figure: 1. Clamping head, 2. Curved fixed mold, 3. Rotating disc, 4. Bending head, 5. Rotating disc telescopic cylinder, 6. Fixed mold telescopic cylinder, 7. Hydraulic cylinder, 8. Motor, 9. Propelling rack, 10. Rotating gear, 11. Base plate, 12. Clamping rotating shaft, 13. Supporting sleeve, 14. Connecting sleeve, 15. Top column, 16. Clamping plate, 17. Positioning notch, 18. Gear box, 19. Transmission gear. DETAILED DESCRIPTION

[0018] The steel bar bending auxiliary clamping device will be further described below in combination with the drawings and specific embodiments:

[0019] Figure 1 is a perspective structural schematic view of the steel bar bending auxiliary clamping device, Figure 2 is Figure 1 A-A sectional view in the figure, Figure 3 is Figure 1Figure 2 is a sectional view of B-B in figure 1. In the figure, the reinforcing bar bending auxiliary clamping device comprises a bending fixed mold 2, which is a circular ring, and is provided with a positioning notch 17, which is a radial through U-shaped cross-section slot. A clamping head 1 is arranged in the inner circle of the circular ring bending fixed mold, and the clamping head 1 is also provided with the same U-shaped slot. The clamping head 1 can clamp the reinforcing bar when it rotates. The lower end of the clamping head 1 is connected with a clamping rotating shaft 12, the upper end surface of the clamping rotating shaft 12 is provided with a square counterbore, the lower end of the clamping head 1 is provided with a square column matched with the square counterbore, the square column is inserted into the square counterbore, and the clamping head can be conveniently replaced for different specifications of reinforcing bars. The bottom end of the clamping rotating shaft 12 is provided with a rotating gear 10, a push rack 9 is arranged beside the rotating gear 10, the rotating gear 10 and the push rack 9 are engaged, the push rack 9 is connected with a hydraulic cylinder 7, the clamping rotating shaft 12 is driven to rotate through the gear and rack mechanism, and the hydraulic cylinder 7 can also use a cylinder as a power source. The lower surface of the bending fixed mold 2 is connected with a support sleeve 13, the support sleeve 13 and the bending fixed mold 2 are fixed and do not rotate, the outer circle of the bending fixed mold 2 is provided with a rotating disc 3 rotating around the bending fixed mold, the upper end surface of the rotating disc 3 is provided with a bending head 4, the lower end of the rotating disc 3 is connected with a connecting sleeve 14 through an end face spline, the clamping rotating shaft 12 is rotatably arranged in the support sleeve 13, and the support sleeve 13 is rotatably arranged in the connecting sleeve 14. The lower surface of the rotating disc 3 is provided with a gear box 18, the connecting sleeve 14 penetrates the middle part of the gear box, the outer circle of the connecting sleeve 14 is provided with an external gear, the connecting sleeve 14 is engaged with a transmission gear in the gear box 18, and the transmission gear is driven to rotate through a motor 8. The lower end of the clamping rotating shaft 12 is provided with a base plate 11, the middle part of the base plate 11 is provided with a fixed mold telescopic cylinder 6, the piston rod of the fixed mold telescopic cylinder 6 is connected with the clamping rotating shaft 12, the two ends of the base plate 11 are each provided with a rotating disc telescopic cylinder 5, the outer circle of the connecting sleeve 14 is provided with a clamping groove, a clamping plate 16 is connected on the clamping groove, and the two ends of the clamping plate 16 are connected with the piston rods of the rotating disc telescopic cylinders 5 through jacks 15.

[0020] In use, when the reinforcing bar enters the positioning notch 17 of the bending fixed mold 2 and reaches the position of reinforcing bar bending, the hydraulic cylinder 7 extends to push the push rack 9 to drive the rotating gear 10 to rotate, thereby driving the clamping rotating shaft 12 to rotate, and at this time, the clamping head 1 rotates to clamp the reinforcing bar. After the reinforcing bar is clamped, the motor 8 rotates to drive the rotation of the transmission gear 19 in the gear box 18, drive the connecting sleeve 14 to rotate, and then the rotating disc 3 and the bending head 4 rotate to bend the reinforcing bar. After the reinforcing bar is bent and formed, the hydraulic cylinder 7 drives the push rack 9 to retract, and the clamping rotating shaft 12 reverses to release the clamped reinforcing bar. The reinforcing bar continues to move forward along the positioning notch 17, stops at the next bending point, and is bent again.

[0021] If it is installed on the production line equipment of steel bending, the whole clamping device is retracted below the steel bending workbench, when bending is needed, the bending fixed die cylinder 6 and the rotary disc retracting cylinder 5 push out the bending fixed die 2 and the rotary disc 3 upward, the positioning slot on the bending fixed die always faces the moving direction of the steel, so that the steel to be bent can smoothly enter the bending fixed die to perform bending operation. After the first bending point is bent, the steel continues to move forward to perform bending at the second bending point, when reverse bending of the steel is needed, the rotary disc retracting cylinder 5 is retracted below the workbench, the bending head 4 is rotated to the other side of the steel, and then the rotary disc retracting cylinder 5 is pushed out to bend the steel. After the steel is bent, the bending fixed die cylinder 6 and the rotary disc retracting cylinder 5 are retracted at the same time.

[0022] The clamping device has compact structure, small volume and small space occupation, and can realize precise bending when installed on the steel bending equipment, and more space is reserved, which is more convenient for production. The clamping head is inserted with the clamping rotary shaft through the square column, so that one set of clamping device can be used for bending steels of different sizes, the adaptation range is large, and the investment in production equipment is saved.

[0023] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed methods and technical contents to obtain equivalent embodiments with equivalent changes, but as long as the changes do not deviate from the technical solution of the present application, any simple modification, equivalent change and modification of the above embodiments based on the technical essence of the present application still belong to the scope of the present application.

Claims

1. A reinforcing bar bending auxiliary clamping device characterized by: The utility model provides a kind of steel bar bending machine, including bending fixed mould (2), positioning notch (17) is provided on bending fixed mould (2), clamping head (1) is provided in positioning notch (17), clamping head (1) rotates and clamps steel bar, the lower end of clamping head (1) is connected with clamping rotary shaft (12), clamping rotary shaft (12) is driven to rotate by rack and pinion mechanism, the lower surface of the bending fixed mould (2) is connected with support sleeve (13), support sleeve (13) is fixed and does not rotate, the outer ring of bending fixed mould (2) is provided with rotary disc (3) rotating around bending fixed mould, the upper end surface of rotary disc (3) is provided with bending head (4), the lower end of rotary disc (3) is connected with connecting sleeve (14) by end face spline, connecting sleeve (14) is driven to rotate by motor (8);Clamping rotary shaft (12) rotatably arranged in support sleeve (13), support sleeve (13) is arranged in connecting sleeve (14);The bottom of clamping rotary shaft (12) is provided with rotary gear (10), its side is provided with advancing rack (9), rotary gear (10) and advancing rack (9) are engaged, advancing rack (9) is connected with hydraulic cylinder (7);The lower surface of clamping rotary shaft (12) is provided with base plate (11), the middle of base plate (11) is provided with fixed mould telescopic cylinder (6), the piston rod of fixed mould telescopic cylinder (6) is connected with clamping rotary shaft (12), the both ends of base plate (11) are each provided with rotary disc telescopic cylinder (5), the outer circle of connecting sleeve (14) is provided with clamping groove, clamping groove is connected with clamping plate (16), the both ends of clamping plate (16) are connected with the piston rod of rotary disc telescopic cylinder (5) by jacking post (15);The upper end surface of clamping rotary shaft (12) is provided with square counterbore, the lower end of clamping head (1) is provided with square column that is adapted to square counterbore, square column is inserted into square counterbore;The lower surface of rotary disc (3) is provided with gear box (18), connecting sleeve (14) penetrates the middle part of gear box (18), the outer circle of connecting sleeve (14) is connected with transmission gear (19) in gear box, transmission gear (19) is driven to rotate by motor (8);Bending fixed mould (2) is annular, positioning notch (17) is radial through U-shaped cross-section through groove, the inner circle of annular bending fixed mould (2) is provided with clamping head (1), clamping head (1) is also provided with same U-shaped through groove.

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