Flexible bending device and bending method for round steel

Abstract

The invention belongs to the technical field of steel machining, and particularly relates to a flexible bending device and method for round steel. The bottom end of a motor support is welded to the upper portion of a bottom rod of a main body support, a motor is fixed to the motor support, a pinion is fixed to an output shaft of the motor, and the upper end of a rotating shaft sequentially penetrates through the top face of the main body support and a disc and is fixed to the center of the disc; the motor is connected with the single-chip microcomputer, the pedal is connected with an input pin of the single-chip microcomputer, and the edge of the lower surface of the disc is fixedly provided with an upper rotating stop in the direction of the center line of the disc. The upper surface of the main body support is in threaded connection with a first lower rotating stopper and a second lower rotating stopper at intervals below the edge of the disc in the center line direction of the disc, the middle of the upper surface of the disc is in threaded connection with a bending die, the upper surface of the disc is fixedly connected with an adjusting unit, and the upper surface of the main body support is fixedly connected with a positioning unit. The device is simple in structure, the bending angle, radius and shape of round steel can be adjusted, and the maintenance cost is low.

Description

Technical Field

[0001] The invention belongs to the technical field of steel processing, and in particular relates to a flexible bending device and a bending method for round steel. Background Art

[0002] Round steel is a common metal material, widely used in building structures, mechanical parts and other fields. The round steel bending equipment currently on the market has a complex structure and high use and maintenance costs, making it unsuitable for round steel bending operations in small and medium-sized enterprises. Traditional bending equipment usually uses fixed molds or mechanical bending mechanisms, which have problems with fixed bending radius, angle, and shape. At the same time, manual bending is required, which increases the workload of workers. After repeated bending, workers are prone to fatigue. In addition, the back half of the round steel is not fixed, and the round steel is easily offset during bending, affecting the bending accuracy. Summary of the Invention

[0003] The purpose of the present invention is to provide a flexible bending device and bending method for round steel, so as to solve the problems of high cost, fixed bending radius, angle and shape of existing bending equipment, and easy deviation during bending.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: The cam is connected to the drive means by a bolt, and the cam is connected to the drive means by a bolt, and the cam is connected to the drive means by a bolt.

[0005] Preferably, the adjustment unit includes a first tightening block and a first clamping plate, the first tightening block and the first clamping plate are fixed on the upper surface of the disc, the two first clamping plates are arranged opposite to each other along the center line of the disc, the first positioning block is slidably connected between the two first clamping plates, the first positioning block has a scale, the end of the first positioning block away from the center of the disc is fixed to the first screw rod, the first screw rod passes through the first tightening block and is rotatably connected to it, and the other end of the first screw rod is fixed to the first handle.

[0006] Preferably, the positioning unit includes a second tightening block and a second clamping plate, the second tightening block and the second clamping plate are fixed to the upper surface of the main bracket, the two second clamping plates are arranged relative to each other front and back, and the second positioning block is slidably connected in the middle of the two second clamping plates, and the top of the second positioning block is fixed with an adjusting rod along a direction perpendicular to the moving direction of the second positioning block, a horizontal threaded hole is provided on the adjusting rod, and a sleeve is slidably connected to the outside of the adjusting rod for positioning the length of the round steel, a through hole is provided on the sleeve, and the through hole corresponds to the threaded hole, one side of the second positioning block is fixed to the second screw rod, and the second screw rod passes through the second tightening block and is rotatably connected to it, and the other end of the second screw rod is fixed with the second handle.

[0007] Preferably, the side wall of the sleeve fixes the handle.

[0008] Preferably, a support ring is fixed on the upper surface of the main frame corresponding to the center of the disc, and the rotating shaft passes through the support ring.

[0009] Preferably, two threaded holes are provided on the upper surface of the main body bracket at intervals of 45 degrees for adjusting the positions of the first lower rotation stop and the second lower rotation stop.

[0010] Preferably, a shaft sleeve is fixed on the periphery of the bottom end of the rotating shaft, and a shaft cover is fixed on the bottom end of the shaft sleeve.

[0011] Preferably, the bending die is replaceable, and the bending die includes a cylindrical bending die with a radius of 8 mm, a cylindrical bending die with a radius of 15 mm, and a square bending die.

[0012] A flexible bending method for round steel, the specific steps are as follows: S1: According to the bending angle requirements of the round steel, adjust the positions of the first lower rotation stop and the second lower rotation stop. In the initial state, the upper rotation stop is in contact with the first lower rotation stop, and the round steel is placed between the bending die and the first positioning block of the adjustment unit; S2: According to the diameter of the round steel, twist the first handle to adjust the distance between the first positioning block and the round steel to an appropriate distance; according to the length requirement of the round steel, slide the sleeve on the positioning unit adjustment rod, and step on the foot switch after the length is appropriate; S3: The motor drives the large gear through the small gear, the large gear drives the rotating shaft, and the rotating shaft drives the disc to rotate. When the upper rotating stop is turned to fit the second lower rotating stop, the bending is completed and the disc stops rotating. S4: Release the foot switch, and the disc reverses and returns to the initial upper rotation stop and the first lower rotation stop fit together, preparing for the next bending.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The device has a simple structure, easy operation and low maintenance cost; (2) The motor is controlled by foot pedals and a single-chip microcomputer to reduce the workload of workers and improve work efficiency; the large gear and small gear are combined to drive the disc to rotate through gear transmission, thereby improving the rotation accuracy and accurately controlling the bending degree of the round steel; (3) According to actual needs, adjust the position of the first lower rotation stop and the second lower rotation stop through the threaded holes set at intervals on the upper surface of the main bracket, change the rotation angle of the disc, and adjust the bending angle of the round steel; (4) According to the diameter of the round steel, the distance between the positioning block and the round steel is adjusted through the screw rod of the adjustment unit and the positioning block with scale to expand the scope of application; (5) According to the actual positioning length required for the round steel, the sleeve on the adjusting rod in the sliding positioning unit can be adjusted to flexibly control the length of the round steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the structure of an embodiment of the present invention; Figure 2 A schematic structural diagram of a rack in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the driving mechanism in an embodiment of the present invention; Figure 4 A diagram showing the connection relationship between the disc, the main body bracket, the upper rotation stop, the first lower rotation stop, and the second lower rotation stop in an embodiment of the present invention; Figure 5 Schematic diagram of the structure of the bending mechanism adjustment unit and the positioning unit in an embodiment of the present invention.

[0015] Explanation of the accompanying drawings: 1. frame; 11. main bracket; 12. motor bracket; 2. driving mechanism; 21. pedal; 22. single-chip microcomputer; 23. motor; 24. rotating shaft; 25. small gear; 26. large gear; 3. bending mechanism; 31. bending die; 32. disc; 33. adjusting unit; 331. first tightening block; 332. first clamping plate; 333. first positioning block; 334. first screw rod; 335. first handle; 34. positioning unit; 341. second tightening block; 342. second clamping plate; 343. second positioning block; 344. second screw rod; 345. second handle; 346. adjusting rod; 347. sleeve; 348. handle; 35. upper rotation stop; 36. first lower rotation stop; 37. second lower rotation stop; 4. shaft sleeve; 5. shaft cover; 6. support ring. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1-4As shown, a flexible bending device for round steel includes a frame 1, a driving mechanism 2 and a bending mechanism 3. The frame 1 includes a main frame 11 and a motor frame 12. The driving mechanism 2 includes a pedal 21, a single-chip microcomputer 22, a motor 23 and a rotating shaft 24. The bending mechanism 3 includes a bending die 31, a disc 32, an adjustment unit 33 and a positioning unit 34. The bottom end of the main frame 11 is fixed to the ground, the bottom end of the motor frame 12 is welded above the bottom rod of the main frame 11, and a support ring is fixed on the upper surface of the main frame 11 corresponding to the center of the disc 32. 6, the motor 23 is fixed to the motor bracket 12 by bolts, the output shaft of the motor 23 is fixed to the pinion 25, the upper end of the shaft 24 passes through the support ring 6 of the main bracket 11 and the disc 32 in sequence and is fixed to the center of the disc 32, the bottom end of the shaft 24 is fixed to the outer periphery of the shaft sleeve 4, the bottom end of the shaft sleeve 4 is fixed to the shaft cover 5, the shaft 24 is connected to the large gear 26 through a key, the large gear 26 is meshed with the small gear 25, the motor 23 is connected to the single-chip microcomputer 22 through the drive circuit, the pedal 21 is connected to the input pin of the single-chip microcomputer 22, and the lower end of the disc 32 is fixed to the shaft sleeve 4. The upper rotation stop 35 is fixed on the surface edge along the center line direction of the disk 32, and the upper surface of the main bracket 11 is threadedly connected to the first lower rotation stop 36 and the second lower rotation stop 37 at intervals below the edge of the disk 32 along the center line direction of the disk 32. Two threaded holes are opened on the upper surface of the main bracket 11 every 45 degrees, and the first lower rotation stop 36 and the second lower rotation stop 37 are interchangeable. The middle part of the upper surface of the disk 32 is threadedly connected to the bending die 31, the upper surface of the disk 32 is fixedly connected to the adjustment unit 33, and the upper surface of the main bracket is fixedly connected to the positioning unit 34; the entire device is supported by the main bracket; the motor is controlled by the foot pedal and the single-chip microcomputer to complete the forward and reverse functions, so that the disk is controlled to reverse and return to its original position after bending the round steel, laying the foundation for the next bending and saving time; the large gear and the small gear are engaged to drive the disk to rotate through the gear transmission to achieve round steel bending precision control; according to the required bending angle of the round steel, the position of the first lower rotation stop and the second lower rotation stop are adjusted in combination with the adjustment unit and the positioning unit to meet the requirements; the rotating shaft is stabilized by the support ring to enhance the stability of the rotating shaft.

[0018] like Figure 5As shown, the adjustment unit 33 includes a first tightening block 331 and a first clamping plate 332, the first tightening block 331 and the first clamping plate 332 are fixed to the upper surface of the disc 32, the two first clamping plates 332 are relatively arranged along the center line of the disc 32, and the first positioning block 333 is slidably connected in the middle of the two first clamping plates. The first positioning block 333 is scaled, and the end of the first positioning block 333 away from the center of the disc 32 is fixed to the first screw rod 334, the first screw rod 334 passes through the first tightening block 331 and is rotatably connected to it, and the other end of the first screw rod 334 is fixed to the first handle 335; the positioning unit 34 includes a second tightening block 341 and a second clamping plate 342, the second tightening block 341 and the second clamping plate 342 are fixed to the upper surface of the main bracket 11, the two second clamping plates 342 are relatively arranged front and back, and the two second clamping plates 342 are relatively arranged front and back. The middle of the plate 342 is slidably connected to the second positioning block 343, and the top of the second positioning block 343 is fixed with an adjusting rod 346 along the moving direction perpendicular to the second positioning block 343. A threaded hole is horizontally provided on the adjusting rod 346, and the outside of the adjusting rod 346 is slidably connected to the sleeve 347. A through hole is provided on the sleeve 347, and the through hole corresponds to the threaded hole. The handle 348 is fixed to the side wall of the sleeve 347. One side of the second positioning block 343 is fixed to the second screw rod 344, and the second screw rod 344 passes through the second tightening block 341 and is rotatably connected to it. The other end of the second screw rod 344 is fixed with the second handle 345; the first screw rod in the rotating adjustment unit is used to move the first positioning block to adjust the gap between the first moving block and the round steel to meet the bending requirements of round steels of different diameters; the sleeve on the sliding adjustment rod is used to meet the length requirements of round steels of different diameters.

[0019] A flexible bending method for round steel based on the above device has the following specific steps: S1: According to the bending angle requirement of the round steel, the positions of the first lower rotation stop 36 and the second lower rotation stop 37 are adjusted. In the initial state, the upper rotation stop 35 is in contact with the first lower rotation stop 35, and the round steel is placed between the bending die 31 and the first positioning block 333 of the adjustment unit 33; S2: According to the diameter of the round steel, twist the first handle 335 to adjust the distance between the first positioning block 333 and the round steel to an appropriate distance; according to the required length of the round steel, slide the sleeve 347 on the adjustment rod 346 of the positioning unit 34 to adjust the length. After the length is appropriate, step on the foot switch 21; S3: The motor 23 drives the large gear 26 through the small gear 25, the large gear 26 drives the rotating shaft 24, and the rotating shaft 24 drives the disc 32 to rotate. When the upper rotation stop 35 rotates to fit the second lower rotation stop 37, the bending is completed and the disc 32 stops rotating. S4: Release the pedal 21, and the disc 32 is reversed and returned to the initial position where the upper rotation stop 35 and the first lower rotation stop 36 are in contact with each other, preparing for the next bending.

Claims

1. A flexible bending device for round steel, comprising a frame, a driving mechanism and a bending mechanism, characterized in that: The frame includes a main body bracket and a motor bracket, and the driving mechanism includes a foot pedal, a single-chip microcomputer, a motor and a rotating shaft. The bending mechanism includes a bending die, a disc, an adjusting unit and a positioning unit. The bottom end of the main body bracket is fixed to the ground, the bottom end of the motor bracket is welded above the bottom rod of the main body bracket, the motor is fixed to the motor bracket by bolts, the output shaft of the motor is fixed with a pinion, the upper end of the rotating shaft passes through the top surface of the main body bracket and the disc in sequence and is fixed to the center of the disc, the rotating shaft is connected to the large gear through a key, the large gear is meshed with the small gear, the motor is connected to the single-chip microcomputer through the driving circuit, the foot pedal is connected to the input pin of the single-chip microcomputer, the edge of the lower surface of the disc is fixed with an upper rotating stop along the center line direction of the disc, the upper surface of the main bracket is located below the edge of the disc along the center line direction of the disc, and the first lower rotating stop and the second lower rotating stop are threadedly connected at intervals, the middle of the upper surface of the disc is threadedly connected to the bending die, the upper surface of the disc is fixedly connected to the adjusting unit, and the upper surface of the main bracket is fixedly connected to the positioning unit.

2. A flexible bending device for round steel according to claim 1, characterized in that: The adjusting unit includes a first tightening block and a first clamping plate, which are fixed to the upper surface of the disc, and the two first clamping plates are arranged opposite to each other along the center line of the disc. The first positioning block is slidably connected between the two first clamping plates, and the first positioning block has a scale. The end of the first positioning block away from the center of the disc is fixed to the first screw rod, and the first screw rod passes through the first tightening block and is rotatably connected to it. The other end of the first screw rod is fixed to the first handle.

3. A flexible bending device for round steel according to claim 2, characterized in that: The positioning unit includes a second tightening block and a second clamping plate, the second tightening block and the second clamping plate are fixed to the upper surface of the main bracket, the two second clamping plates are arranged relative to each other front and back, and the second positioning block is slidably connected in the middle of the two second clamping plates. The top of the second positioning block is fixed with an adjusting rod along a direction perpendicular to the moving direction of the second positioning block. A threaded hole is horizontally provided on the adjusting rod, and a sleeve is slidably connected to the outside of the adjusting rod for positioning the length of the round steel. A through hole is provided on the sleeve, and the through hole corresponds to the threaded hole. One side of the second positioning block is fixed to the second screw rod, and the second screw rod passes through the second tightening block and is rotatably connected to it, and the other end of the second screw rod is fixed with the second handle.

4. A flexible bending device for round steel according to claim 3, characterized in that: The side wall of the sleeve fixes the handle.

5. The flexible bending device for round steel according to claim 1, characterized in that: A supporting ring is fixed at a position on the upper surface of the main frame corresponding to the center of the disc, and the rotating shaft penetrates the supporting ring.

6. The flexible bending device for round steel according to claim 1, characterized in that: The upper surface of the main body bracket is provided with two threaded holes at intervals of 45 degrees for adjusting the positions of the first lower rotation stop and the second lower rotation stop.

7. The flexible bending device for round steel according to claim 1, characterized in that: A shaft sleeve is fixed on the periphery of the bottom end of the rotating shaft, and a shaft cover is fixed on the bottom end of the shaft sleeve.

8. The flexible bending device for round steel according to claim 1, characterized in that: The bending die is replaceable, and the bending die includes a cylindrical bending die with a radius of 8 mm, a cylindrical bending die with a radius of 15 mm, and a square bending die.

9. A flexible bending method for round steel based on the device according to claim 3, characterized in that: The specific steps are as follows: S1: According to the bending angle requirements of the round steel, adjust the positions of the first lower rotation stop and the second lower rotation stop. In the initial state, the upper rotation stop is in contact with the first lower rotation stop, and the round steel is placed between the bending die and the first positioning block of the adjustment unit; S2: According to the diameter of the round steel, twist the first handle to adjust the distance between the first positioning block and the round steel to an appropriate distance; according to the length requirement of the round steel, slide the sleeve on the positioning unit adjustment rod, and step on the foot switch after the length is appropriate; S3: The motor drives the large gear through the small gear, the large gear drives the rotating shaft, and the rotating shaft drives the disc to rotate. When the upper rotating stop is turned to fit the second lower rotating stop, the bending is completed and the disc stops rotating. S4: Release the foot switch, and the disc reverses and returns to the initial upper rotation stop and the first lower rotation stop fit together, preparing for the next bending.

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