Steel bar bending equipment and steel bar bending method

Abstract

The invention relates to the technical field of steel bar machining, and discloses steel bar bending equipment and a steel bar bending method. The steel bar bending equipment comprises a mold ejection mechanism, a mold conversion mechanism, a walking mechanism, a steel bar bending mechanism and a steel bar ejection mechanism, wherein the mold ejection mechanism is used for ejecting a steel bar bending mold; the die switching mechanism is used for switching a steel bar bending die; the walking mechanism can drive the whole steel bar bending equipment to walk to the steel bar bending mold storage bin mechanism so that the mold switching mechanism can replace a steel bar bending mold. The steel bar bending mechanism is used for bending and forming the steel bar clamped by the steel bar bending mold; and the steel bar ejection mechanism is used for ejecting the bent and formed steel bars. The steel bar bending machine can be suitable for steel bar bending operation with different steel bar diameters or different bending radiuses, the machining efficiency is high, the machining cost is low, and the occupied space is small.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bar processing, and particularly relates to a steel bar bending device and a steel bar bending method. Background Art

[0002] A steel bar bending device is a kind of steel bar processing machinery used for bending steel bars in construction projects. The steel bar bending device can quickly and accurately bend steel bars of various diameters, with high production efficiency and precise control of the bending angle. With its characteristics of high efficiency, precision, multi-function and cost saving, the steel bar bending device plays an important role in construction and is one of the indispensable devices in modern construction.

[0003] With the increasing variety of steel bar bending, different types of steel bar bending devices have emerged. However, several devices are required for different steel bar diameters, resulting in low processing efficiency and high processing cost. Moreover, several different types of steel bar bending devices occupy a large amount of space, causing waste of space resources. Summary of the Invention

[0004] Based on the above problems, the purpose of the present invention is to provide a steel bar bending device and a steel bar bending method, which can be applicable to steel bar bending operations with different steel bar diameters or different bending radius requirements, with high processing efficiency, low processing cost and small occupied space.

[0005] To achieve the above purpose, the following technical solutions are provided:

[0006] In the first aspect, the present invention provides a steel bar bending device, including:

[0007] A mold ejection mechanism for ejecting a steel bar bending mold;

[0008] A mold conversion mechanism for converting the steel bar bending mold;

[0009] A traveling mechanism capable of driving the entire steel bar bending device to travel to a steel bar bending mold storage bin mechanism for the mold conversion mechanism to replace the steel bar bending mold;

[0010] A steel bar bending mechanism for bending and forming the steel bar clamped by the steel bar bending mold;

[0011] A steel bar ejection mechanism for ejecting the bent and formed steel bar.

[0012] As an alternative to the steel bar bending equipment of the present invention, the traveling mechanism includes a bending traveling support plate, a first support plate, a second support plate, heavy-duty rollers, anti-collision screws, anti-collision shafts, a bending center steering fixing seat, positioning blocks, lubricating blocks, lubricating mounting plates, a motor reducer, a motor mounting seat, a gear spacer, a driving gear, a gear gland, roller bearings, and a traveling shaft. The first support plate and the second support plate are both fixed on the bending traveling support plate, and a plurality of the heavy-duty rollers are respectively fixed on the first support plate and the second support plate; the anti-collision screws are fixed on the anti-collision shafts, and the anti-collision shafts are fixed on the bending traveling support plate; the bending center steering fixing seat is fixed on the bending traveling support plate; the positioning blocks are fixed on the bending traveling support plate; the lubricating blocks are installed on the lubricating mounting plates, and the lubricating mounting plates are installed on the bending traveling support plate; the motor reducer is fixed on the motor mounting seat; the gear spacer passes through the motor reducer; the driving gear passes through the motor reducer; the gear gland passes through the motor reducer and is concentrically connected; the roller bearings are installed on the traveling shaft, and the roller bearings are axially fixed by first shaft snap rings; the traveling shaft is fixed on the bending traveling support plate by flat washers and first nuts.

[0013] As an alternative to the steel bar bending equipment of the present invention, the steel bar bending mechanism includes a first dust-proof sealing ring, an upper center die top shaft, a first plastic bearing, a second plastic bearing, a third plastic bearing, a lower center die top shaft, an upper steel bar top shaft, a lower steel bar top shaft, a bending center die fixing shaft, a second dust-proof sealing ring, and a first bearing. The first dust-proof sealing ring is installed on the upper center die top shaft; two of the first plastic bearings are installed on the upper center die top shaft; the third plastic bearing is installed on the lower center die top shaft; the upper center die top shaft and the lower center die top shaft are connected together; the upper steel bar top shaft and the lower steel bar top shaft are connected together; the upper steel bar top shaft and the lower steel bar top shaft pass through the upper center die top shaft and the lower center die top shaft; the second plastic bearing is fixed on the bending center die fixing shaft; the second dust-proof sealing ring is installed on the bending center die fixing shaft; the upper center die top shaft and the lower center die top shaft concentrically pass through the bending center die fixing shaft; the first bearing is installed on the bending center die fixing shaft.

[0014] As an alternative to the steel bar bending equipment of the present invention, the steel bar bending mechanism includes a star-shaped ring, a star-shaped seal ring copper sleeve, a die rotating sleeve, an O-ring, a gearbox center sleeve, a second bearing, a lower fixed plate of the gearbox, a large synchronous pulley, a flange, a bending gearbox, a first skeleton oil seal and a second skeleton oil seal. The star-shaped ring is installed on the star-shaped seal ring copper sleeve; the star-shaped ring is also installed on the bending center die fixing shaft; the star-shaped ring is further installed on the die rotating sleeve; the O-ring is installed on the gearbox center sleeve; the die rotating sleeve and the bending center die fixing shaft are concentrically installed together; the second bearing is fixed on the lower fixed plate of the gearbox; the large synchronous pulley is connected to the flange; the flange is installed on the bending gearbox through an oil seal spacer sleeve; the first skeleton oil seal is installed on the lower fixed plate of the gearbox; the second skeleton oil seal is installed on the oil seal spacer sleeve; the gearbox center sleeve is fixed on the bending gearbox.

[0015] As an alternative to the steel bar bending equipment of the present invention, the steel bar bending mechanism includes an upper fixed plate of the gearbox, a bending center rotating shaft, a left support sheet metal, a right support sheet metal, a bending center steel bar support sheet metal, a bending center turntable, a bending drag chain box transition plate, a first bending drag chain box, a second bending drag chain box, a bending air pipe transition plate and an L-shaped two-way joint. The upper fixed plate of the gearbox is connected to the lower fixed plate of the gearbox through the bending gearbox; the bending center rotating shaft is fixed on the bending gearbox; the bending center die fixing shaft and the die rotating sleeve are integrally and concentrically installed on the bending center rotating shaft; the left support sheet metal and the right support sheet metal are jointly installed on the lower fixed plate of the gearbox; the bending center steel bar support sheet metal is jointly installed with the left support sheet metal and the right support sheet metal; the bending center turntable is connected to the bending center rotating shaft and axially positions the bending center die fixing shaft and the die rotating sleeve; the steel bar bending die is placed on the bending center die fixing shaft; the bending drag chain box transition plate is fixed on the upper fixed plate of the gearbox; the first bending drag chain box is connected to the second bending drag chain box; the bending drag chain box transition plate is connected to the first bending drag chain box; the bending air pipe transition plate is installed on the bending center rotating shaft; a plurality of L-shaped two-way joints are installed on the bending air pipe transition plate.

[0016] As an alternative to the steel bar bending device of the present invention, the steel bar bending mechanism includes a motor fixing plate, a bending mechanism base, a bending motor, a first spacer, a small synchronous pulley, a tensioning connection sleeve, a synchronous belt structure, a synchronous belt pulley guard, and a floating joint. The mold ejection mechanism includes a mold ejection cylinder, a cylinder connection shaft, an adjustable joint, a cylinder mounting plate, a flange-bearing, and a blanking cover. The motor fixing plate is fixed on the bending mechanism base; the bending mechanism base is connected to the bending center steering fixing seat; the bending motor is installed on the motor fixing plate; the first spacer passes through the bending motor; the small synchronous pulley and the tensioning connection sleeve are integrally connected to the bending motor; the synchronous belt structure connects the small synchronous pulley and the large synchronous pulley; the synchronous belt pulley guard is installed on the motor fixing plate; the floating joint is connected to the mold ejection cylinder; the cylinder connection shaft is connected to the mold ejection cylinder; the adjustable joint is inserted into the floating joint; the mold ejection cylinder is fixed on the cylinder mounting plate; the flange-bearing is installed on the cylinder mounting plate; the blanking cover is fixed on the cylinder mounting plate; the lower fixed plate of the gearbox is connected to the bending mechanism base.

[0017] As an alternative to the steel bar bending device of the present invention, the steel bar ejection mechanism includes a push shaft, a lower push plate, a steel bar ejection cylinder, a long connection shaft, a cylinder mounting seat, a support fixing shaft, a push guiding shaft, an upper push plate, a linear bearing, a bearing fixing seat, and a second shaft retaining ring. The push shaft is connected to the lower push plate; the push shaft passes through the cylinder mounting plate and is connected to the adjustable joint; the steel bar ejection cylinder is connected to the lower push plate; the lower end steel bar top shaft is connected to the steel bar ejection cylinder; the long connection shaft is connected to the cylinder mounting plate and the bending mechanism base; the cylinder mounting seat is connected to the bending mechanism base and the cylinder mounting plate; the two support fixing shafts and the push guiding shaft together connect the lower push plate and the upper push plate; the linear bearing is installed in the bearing fixing seat; the second shaft retaining ring is stuck in the bearing fixing seat to prevent the linear bearing from axially moving.

[0018] As an alternative to the steel bar bending device of the present invention, the mold conversion mechanism includes a cylinder fixing frame, a flange seat bearing, a mold conversion cylinder, and a tapered mouth fixing block. The cylinder fixing frame is installed on the cylinder mounting seat; the flange seat bearing is inserted into the mold conversion cylinder; the flange seat bearing is connected to the cylinder fixing frame; the tapered mouth fixing block is fixed on the upper push plate; the lower end center mold top shaft is connected to the tapered mouth fixing block through a large flat washer and a second nut.

[0019] As an alternative to the steel bar bending device of the present invention, the steel bar bending mechanism includes a first flanged copper bushing, a small bending shaft sleeve, a small bending shaft center shaft, a small bending shaft gland, a small bending shaft lower sleeve, a first hexagon socket head cap screw, a first bending cylinder transition mounting plate, a first bending shaft ejecting cylinder, and a first bending cylinder joint. The first flanged copper bushing is installed on the small bending shaft sleeve; the small bending shaft center shaft is concentrically installed on the first flanged copper bushing; the small bending shaft gland is installed on the small bending shaft sleeve; the small bending shaft center shaft is concentrically installed on the small bending shaft lower sleeve; the first hexagon socket head cap screw is installed on the small bending shaft lower sleeve for locking the small bending shaft center shaft; the first bending cylinder transition mounting plate is installed on the first bending shaft ejecting cylinder; the first bending cylinder joint is installed on the first bending shaft ejecting cylinder; the first bending cylinder joint is inserted through the small bending shaft lower sleeve. The steel bar bending mechanism further includes a second flanged copper bushing, a third flanged copper bushing, a large bending shaft sleeve, a large bending shaft center shaft, a large bending shaft gland, a large bending shaft lower sleeve, a second hexagon socket head cap screw, a second bending cylinder transition mounting plate, a second bending shaft ejecting cylinder, and a second bending cylinder joint. The second flanged copper bushing and the third flanged copper bushing are jointly installed on the large bending shaft sleeve; the large bending shaft center shaft is concentrically installed on the second flanged copper bushing and the third flanged copper bushing; the large bending shaft gland is installed on the large bending shaft sleeve; the large bending shaft center shaft is concentrically installed on the large bending shaft lower sleeve; the second hexagon socket head cap screw is installed on the large bending shaft lower sleeve for locking the large bending shaft center shaft; the second bending cylinder transition mounting plate is installed on the second bending shaft ejecting cylinder; the second bending cylinder joint is installed on the second bending shaft ejecting cylinder; the second bending cylinder joint is inserted through the large bending shaft lower sleeve.

[0020] Second, the present invention also provides a steel bar bending method, which uses the above-mentioned steel bar bending device for steel bar bending operations, including the following steps:

[0021] Bending and forming the steel bar clamped by the steel bar bending die through the steel bar bending mechanism;

[0022] Ejecting the bent and formed steel bar through the steel bar ejecting mechanism;

[0023] When bending steel bars with different diameters or different bending radius requirements, it is necessary to replace the steel bar bending die, and the traveling mechanism drives the entire steel bar bending device to travel to the steel bar bending die storage bin mechanism;

[0024] Ejecting the steel bar bending die through the die ejecting mechanism;

[0025] Replacing the steel bar bending die through the die conversion mechanism.

[0026] The beneficial effects of the present invention are as follows:

[0027] The steel bar bending equipment and the steel bar bending method provided by the present invention bend and form the steel bar clamped by the steel bar bending die through the steel bar bending mechanism, and eject the bent and formed steel bar through the steel bar ejection mechanism. When bending steel bars with different diameters or different bending radius requirements, it is necessary to replace the steel bar bending die. The traveling mechanism drives the entire steel bar bending equipment to travel to the steel bar bending die storage bin mechanism, ejects the steel bar bending die through the die ejection mechanism, and replaces the steel bar bending die through the die conversion mechanism, realizing the rapid replacement of the steel bar bending die, saving time and effort. This steel bar bending equipment can be applicable to the steel bar bending operations with different steel bar diameters or different bending radius requirements, with high processing efficiency, low processing cost, and small occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present invention and these drawings.

[0029] Figure 1 FIG. 14 is a schematic structural view of the traveling mechanism provided by the specific embodiment of the present invention from the first perspective;

[0030] Figure 2 FIG. 18 is a schematic structural view of the traveling mechanism provided by the specific embodiment of the present invention from the second perspective;

[0031] Figure 3 FIG. 22 is a schematic sectional view of the traveling mechanism provided by the specific embodiment of the present invention;

[0032] Figure 4 FIG. 26 is a schematic structural view of the traveling mechanism provided by the specific embodiment of the present invention from the third perspective;

[0033] Figure 5 FIG. 30 is a schematic structural view of the steel bar bending mechanism provided by the specific embodiment of the present invention from the fourth perspective;

[0034] Figure 6 FIG. 34 is a schematic sectional view of the steel bar bending mechanism provided by the specific embodiment of the present invention from the fifth perspective;

[0035] Figure 7 FIG. 38 is a schematic sectional view of the steel bar bending mechanism provided by the specific embodiment of the present invention from the sixth perspective;

[0036] Figure 8It is a schematic structural diagram of the steel bar ejection mechanism and the mold ejection mechanism provided by the specific embodiment of the present invention from the seventh perspective;

[0037] Figure 9 It is a schematic structural diagram of the mold conversion mechanism provided by the specific embodiment of the present invention from the eighth perspective;

[0038] Figure 10 It is a schematic structural diagram of the mold conversion mechanism provided by the specific embodiment of the present invention from the ninth perspective;

[0039] Figure 11 It is a schematic structural diagram of the steel bar bending mechanism provided by the specific embodiment of the present invention from the tenth perspective;

[0040] Figure 12 It is a schematic structural diagram of the steel bar ejection mechanism provided by the specific embodiment of the present invention from the eleventh perspective;

[0041] Figure 13 It is a schematic structural diagram of the steel bar bending mechanism provided by the specific embodiment of the present invention from the twelfth perspective;

[0042] Figure 14 It is a schematic structural diagram of the steel bar bending equipment provided by the specific embodiment of the present invention from the thirteenth perspective;

[0043] Figure 15 It is a schematic structural diagram of the steel bar bending equipment provided by the specific embodiment of the present invention from the fourteenth perspective;

[0044] Figure 16 It is a schematic cross-sectional view of the steel bar bending mechanism provided by the specific embodiment of the present invention;

[0045] Figure 17 It is a schematic structural diagram of the small bending center axis provided by the specific embodiment of the present invention;

[0046] Figure 18 It is a schematic cross-sectional view of the small bending center axis provided by the specific embodiment of the present invention;

[0047] Figure 19 It is a schematic structural diagram of the large bending center axis provided by the specific embodiment of the present invention;

[0048] Figure 20 It is a schematic cross-sectional view of the large bending center axis provided by the specific embodiment of the present invention;

[0049] Figure 21 It is a schematic structural diagram of the steel bar bending equipment provided by the specific embodiment of the present invention from the fifteenth perspective.

[0050] In the figure:

[0051] 1. First support plate; 2. Bending walking support plate; 3. Motor mounting seat; 4. Anti-collision screw; 5. Heavy-duty roller; 6. Second support plate; 7. Bending center steering fixed seat; 8. Anti-collision shaft; 9. Positioning block; 10. Lubrication mounting plate; 11. Lubrication block; 12. Motor reducer; 13. Gear spacer; 14. Driving gear; 15. Roller bearing; 16. Flat washer; 17. First shaft snap ring; 18. First nut; 19. Walking shaft; 20. Gear gland; 21. Steel bar bending die; 22. Bending center steel bar support sheet metal; 23. Bending center rotating shaft; 24. Left support sheet metal; 25. Right support sheet metal; 26. First dust-proof sealing ring; 27. Die rotating sleeve; 28. Star-shaped ring; 29. Star-shaped sealing ring copper sleeve; 30. Bending center die fixing shaft; 31. Upper end center die top shaft; 32. O-ring; 33. Oil seal spacer; 34. First skeleton oil seal; 35. First plastic bearing; 36. Second dust-proof sealing ring; 37. Second plastic bearing; 38. First bearing; 39. Upper end steel bar top shaft; 40. Lower end steel bar top shaft; 41. Transmission center sleeve; 42. Lower end center die top shaft; 43. Second bearing; 44. Second skeleton oil seal; 45. Third plastic bearing; 46. Bending center turntable; 47. L-shaped two-way joint; 48. Bending air pipe transition plate; 49. First bending drag chain box; 50. Second bending drag chain box; 51. Bending drag chain box transition plate; 52. Transmission upper fixing plate; 53. Bending transmission; 54. Transmission lower fixing plate; 55. Steel bar ejecting cylinder; 56. Long connecting shaft; 57. Lower pushing plate; 58. Cylinder mounting plate; 59. Hexagon socket head cap screw; 60. Pushing shaft; 61. Adjustable joint; 62. Cylinder connecting shaft; 63. Die ejecting cylinder; 64. Cylinder mounting seat; 65. Die conversion cylinder; 66. Flange seat bearing; 67. Bending motor; 68. Cylinder fixing frame; 69. Pushing plate assembly; 70. Tapered fixing block; 71. Motor fixing plate; 72. First spacer; 73. Upper pushing plate; 74. Support fixing shaft; 75. Second shaft snap ring; 76. Bearing fixing seat; 77. Linear bearing; 78. Pushing guide shaft; 79. Flanged bearing; 80. Blind cover; 81. Floating joint; 82. Bending mechanism base; 83. Large synchronous pulley; 84. Rib; 85. Synchronous pulley guard; 86. Tensioning connecting sleeve; 87. Small synchronous pulley; 88. Synchronous belt structure; 89. Small bending shaft assembly structure; 90. Large bending shaft assembly structure; 91. Upper half of the bending machine; 92. Large flat washer; 93. Second nut; 94. Lower half of the bending machine; 95. Upper sleeve of the small bending shaft; 96. Lower sleeve of the small bending shaft; 97. First hexagon socket set screw; 98. First bending cylinder transition mounting plate; 99. First bending shaft ejecting cylinder; 100. Gland of the small bending shaft; 101. First crimped copper sleeve; 102. Small bending shaft center shaft; 103. First bending cylinder joint; 104. Upper sleeve of the large bending shaft105. Lower sleeve of large bending shaft; 106. Second internal hexagonal socket set screw; 107. Transition mounting plate of second bending cylinder; 108. Second bending shaft ejecting cylinder; 109. Gland of large bending shaft; 110. Second flanging copper bushing; 111. Central shaft of large bending shaft;

[0052] 112. Third flanging copper bushing; 113. Joint of second bending cylinder. Detailed implementation manners

[0053] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0054] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0055] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mount", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0056] Such as Figures 1 to 21As shown in the figure, this embodiment provides a steel bar bending device, which includes a mold ejection mechanism, a mold conversion mechanism, a traveling mechanism, a steel bar bending mechanism, and a steel bar ejection mechanism. The mold ejection mechanism is used to eject the steel bar bending mold 21 to unlock the steel bar bending mold 21 from the steel bar bending device, facilitating the subsequent replacement of the steel bar bending mold 21. The steel bar bending mold 21 can be a mold with a self-locking function, which is easy to realize the automation of mold replacement; the mold conversion mechanism is used to convert the steel bar bending mold 21. It can be understood that multiple steel bar bending molds 21 are stored in the steel bar bending mold storage bin mechanism; the traveling mechanism can drive the entire steel bar bending device to travel to the steel bar bending mold storage bin mechanism for the mold conversion mechanism to replace the steel bar bending mold 21; the steel bar bending mechanism is used to bend and form the steel bar clamped by the steel bar bending mold 21; the steel bar ejection mechanism is used to eject the bent and formed steel bar.

[0057] The steel bar is bent and formed by the steel bar bending mechanism, and the bent and formed steel bar is ejected by the steel bar ejection mechanism. When bending steel bars with different diameters or different bending radius requirements, it is necessary to replace the steel bar bending mold 21. The traveling mechanism drives the entire steel bar bending device to travel to the steel bar bending mold storage bin mechanism, the steel bar bending mold 21 is ejected by the mold ejection mechanism, and the steel bar bending mold 21 is replaced by the mold conversion mechanism. The steel bar bending mold 21 is quickly replaced, saving time and effort. This steel bar bending device can be applied to the steel bar bending operations with different steel bar diameters or different bending radius requirements, with high processing efficiency, low processing cost, and small occupied space.

[0058] For the convenience of the traveling mechanism to drive the entire steel bar bending equipment to travel to the steel bar bending die storage bin mechanism, optionally, the traveling mechanism includes a bending traveling support plate 2, a first support plate 1, a second support plate 6, heavy-duty rollers 5, anti-collision screws 4, anti-collision shafts 8, a bending center steering fixing seat 7, a positioning block 9, a lubricating block 11, a lubricating mounting plate 10, a motor reducer 12, a motor mounting seat 3, a gear spacer 13, a driving gear 14, a gear gland 20, a roller bearing 15, and a traveling shaft 19. The bending traveling support plate 2 serves as the main support structure of the traveling mechanism. The first support plate 1 and the second support plate 6 are both fixed on the bending traveling support plate 2. Multiple heavy-duty rollers 5 are respectively fixed on the first support plate 1 and the second support plate 6, and the heavy-duty rollers 5 are used for rolling cooperation with the track; the anti-collision screws 4 are fixed on the anti-collision shafts 8, and the anti-collision shafts 8 are fixed on the bending traveling support plate 2 to provide an anti-collision function for the traveling mechanism; the bending center steering fixing seat 7 is fixed on the bending traveling support plate 2, and the bending center steering fixing seat 7 is fixedly connected to the steel bar bending mechanism to provide support for the steel bar bending mechanism; the positioning block 9 is fixed on the bending traveling support plate 2, and the positioning block 9 is used to position the traveling mechanism relative to the track; the lubricating block 11 is installed on the lubricating mounting plate 10, and the lubricating mounting plate 10 is installed on the bending traveling support plate 2, and the lubricating block 11 can effectively reduce the traveling resistance and improve the traveling efficiency; the motor reducer 12 is fixed on the motor mounting seat 3, and the motor reducer 12 is a driving motor integrated with a reducer; the gear spacer 13 passes through the output shaft of the motor reducer 12; the driving gear 14 passes through the output shaft of the motor reducer 12; the gear gland 20 passes through the output shaft of the motor reducer 12 and is concentrically connected; the roller bearing 15 is installed on the traveling shaft 19, and the roller bearing 15 is axially fixed by a first shaft circlip 17; the traveling shaft 19 is fixed on the bending traveling support plate 2 through a flat washer 16 and a first nut 18.

[0059] For the convenience of bending the steel bars, optionally, the steel bar bending mechanism includes a first dust-proof sealing ring 26, an upper center die top shaft 31, a first plastic bearing 35, a second plastic bearing 37, a third plastic bearing 45, a lower center die top shaft 42, an upper steel bar top shaft 39, a lower steel bar top shaft 40, a bending center die fixing shaft 30, a second dust-proof sealing ring 36 and a first bearing 38. The first dust-proof sealing ring 26 is installed on the upper center die top shaft 31 to play a role in dust-proof sealing; two first plastic bearings 35 are installed on the upper center die top shaft 31 to effectively reduce the rotation resistance of the upper center die top shaft 31; the third plastic bearing 45 is installed on the lower center die top shaft 42 to effectively reduce the rotation resistance of the lower center die top shaft 42; the upper center die top shaft 31 and the lower center die top shaft 42 are connected together to facilitate the transmission of the acting force; the upper steel bar top shaft 39 and the lower steel bar top shaft 40 are connected together to facilitate the transmission of the acting force; the upper steel bar top shaft 39 and the lower steel bar top shaft 40 pass through the upper center die top shaft 31 and the lower center die top shaft 42, making the structure compact and occupying a small space; the second plastic bearing 37 is fixed on the bending center die fixing shaft 30 to effectively reduce the rotation resistance of the bending center die fixing shaft 30; the second dust-proof sealing ring 36 is installed on the bending center die fixing shaft 30 to play a role in dust-proof sealing; the upper center die top shaft 31 and the lower center die top shaft 42 are concentrically passed through the bending center die fixing shaft 30, making the structure compact and occupying a small space; the first bearing 38 is installed on the bending center die fixing shaft 30 to reduce the friction resistance.

[0060] For the convenience of rotating the die, optionally, the steel bar bending mechanism includes a star-shaped ring 28, a star-shaped sealing ring copper sleeve 29, a die rotating sleeve 27, an O-ring 32, a transmission center sleeve 41, a second bearing 43, a transmission lower fixing plate 54, a large synchronous pulley 83, a rib 84, a bending transmission 53, a first skeleton oil seal 34 and a second skeleton oil seal 44. The star-shaped ring 28 is installed on the star-shaped sealing ring copper sleeve 29 to limit and fix the star-shaped sealing ring copper sleeve 29; the star-shaped ring 28 is also installed on the bending center die fixing shaft 30; the star-shaped ring 28 is further installed on the die rotating sleeve 27; the O-ring 32 is installed on the transmission center sleeve 41 to seal the transmission center sleeve 41; the die rotating sleeve 27 and the bending center die fixing shaft 30 are concentrically installed together, with a compact structure and a small occupied space; the second bearing 43 is fixed on the transmission lower fixing plate 54; the large synchronous pulley 83 and the rib 84 are connected together; the rib 84 is installed on the bending transmission 53 through an oil seal spacer 33; the first skeleton oil seal 34 is installed on the transmission lower fixing plate 54 to oil-seal the transmission lower fixing plate 54; the second skeleton oil seal 44 is installed on the oil seal spacer 33 to oil-seal the oil seal spacer 33; the transmission center sleeve 41 is fixed on the bending transmission 53.

[0061] For the convenience of bending steel bars, optionally, the steel bar bending mechanism includes a fixed disk 52 on the gearbox, a bending center rotating shaft 23, a left support sheet metal 24, a right support sheet metal 25, a bending center steel bar support sheet metal 22, a bending center turntable 46, a bending drag chain box transition plate 51, a first bending drag chain box 49, a second bending drag chain box 50, a bending air pipe transition plate 48, and an L-shaped tee 47. The fixed disk 52 on the gearbox is connected to the fixed disk 54 under the gearbox through a bending gearbox 53 to fix the bending gearbox 53. The bending center rotating shaft 23 is fixed on the bending gearbox 53, and the bending center rotating shaft 23 is driven to rotate by the bending gearbox 53. The bending center die fixed shaft 30 and the die rotating sleeve 27 are integrally concentrically installed on the bending center rotating shaft 23, with a compact structure and small occupied space. The left support sheet metal 24 and the right support sheet metal 25 are jointly installed on the fixed disk 54 under the gearbox. The bending center steel bar support sheet metal 22 is jointly installed with the left support sheet metal 24 and the right support sheet metal 25, and the bending center steel bar support sheet metal 22 is supported by the left support sheet metal 24 and the right support sheet metal 25. The bending center turntable 46 is connected to the bending center rotating shaft 23 and axially positions the bending center die fixed shaft 30 and the die rotating sleeve 27. The steel bar bending die 21 is placed on the bending center die fixed shaft 30. The bending drag chain box transition plate 51 is fixed on the fixed disk 52 on the gearbox. The first bending drag chain box 49 is connected to the second bending drag chain box 50. The bending drag chain box transition plate 51 is connected to the first bending drag chain box 49. The bending air pipe transition plate 48 is installed on the bending center rotating shaft 23. A plurality of L-shaped tees 47 are installed on the bending air pipe transition plate 48.

[0062] To ensure the bending degree of the steel bars, optionally, the steel bar bending mechanism includes a motor fixing plate 71, a bending mechanism base 82, a bending motor 67, a first spacer 72, a small synchronous pulley 87, a tensioning connection sleeve 86, a synchronous belt structure 88, a synchronous belt pulley guard 85, and a floating joint 81. The mold ejection mechanism includes a mold ejection cylinder 63, a cylinder connecting shaft 62, an adjustable joint 61, a cylinder mounting plate 58, a flange-bearing 79, and a blanking plug 80. The motor fixing plate 71 is fixed on the bending mechanism base 82; the bending mechanism base 82 is connected to the bending center steering fixing seat 7; the bending motor 67 is installed on the motor fixing plate 71; the first spacer 72 passes through the bending motor 67; the small synchronous pulley 87 and the tensioning connection sleeve 86 are integrally connected to the bending motor 67; the synchronous belt structure 88 connects the small synchronous pulley 87 and the large synchronous pulley 83, and drives the small synchronous pulley 87 and the large synchronous pulley 83 to rotate through the synchronous belt structure 88; the synchronous belt pulley guard 85 is installed on the motor fixing plate 71 to provide dust protection for the small synchronous pulley 87 and the large synchronous pulley 83; the floating joint 81 is connected to the mold ejection cylinder 63 to reduce the installation accuracy requirements; the cylinder connecting shaft 62 is connected to the mold ejection cylinder 63, and the cylinder connecting shaft 62 is connected to the adjustable joint 61; the adjustable joint 61 and the floating joint 81 are inserted into each other; the mold ejection cylinder 63 is fixed on the cylinder mounting plate 58; the flange-bearing 79 is installed on the cylinder mounting plate 58; the blanking plug 80 is fixed on the cylinder mounting plate 58; the lower fixing plate 54 of the gearbox is connected to the bending mechanism base 82.

[0063] To facilitate the ejection of the bent and formed steel bars, optionally, the steel bar ejection mechanism includes a pushing shaft 60, a lower pushing plate 57, a steel bar ejection cylinder 55, a long connecting shaft 56, a cylinder mounting seat 64, a support fixing shaft 74, a pushing guide shaft 78, an upper pushing plate 73, a linear bearing 77, a bearing fixing seat 76, and a second shaft circlip 75. The pushing shaft 60 is connected to the lower pushing plate 57; the pushing shaft 60 passes through the cylinder mounting plate 58 and is connected to the adjustable joint 61; the steel bar ejection cylinder 55 is connected to the lower pushing plate 57; the lower end steel bar top shaft 40 is connected to the steel bar ejection cylinder 55; the long connecting shaft 56 is connected to the cylinder mounting plate 58 and the bending mechanism base 82; the cylinder mounting seat 64 is connected to the bending mechanism base 82 and the cylinder mounting plate 58; the two support fixing shafts 74 and the pushing guide shaft 78 jointly connect the lower pushing plate 57 and the upper pushing plate 73; the linear bearing 77 is installed in the bearing fixing seat 76; the second shaft circlip 75 is stuck in the bearing fixing seat 76 to prevent the linear bearing 77 from axially moving. The long connecting shaft 56 and the cylinder mounting plate 58 can be fixedly connected by an inner hexagon socket head cap screw 59. The lower pushing plate 57 and the upper pushing plate 73 jointly form a pushing plate assembly 69.

[0064] For the convenience of mold replacement, optionally, the mold conversion mechanism includes a cylinder fixing bracket 68, a flange seat bearing 66, a mold conversion cylinder 65 and a tapered orifice fixing block 70. The cylinder fixing bracket 68 is installed on the cylinder mounting seat 64; the flange seat bearing 66 is inserted through the mold conversion cylinder 65; the flange seat bearing 66 is connected to the cylinder fixing bracket 68; the tapered orifice fixing block 70 is fixed on the upper push plate 73; the lower end center mold jacking shaft 42 is connected to the tapered orifice fixing block 70 through a large flat washer 92 and a second nut 93.

[0065] For the convenience of coping with the bending operation of reinforcing bars with a smaller diameter, optionally, the reinforcing bar bending mechanism includes a first flanged copper bushing 101, a small bending shaft upper sleeve 95, a small bending shaft center shaft 102, a small bending shaft gland 100, a small bending shaft lower sleeve 96, a first hexagon socket set screw 97, a first bending cylinder transition mounting plate 98, a first bending shaft ejecting cylinder 99 and a first bending cylinder joint 103. The first flanged copper bushing 101 is installed on the small bending shaft upper sleeve 95; the small bending shaft center shaft 102 is concentrically installed on the first flanged copper bushing 101, with a compact structure and small occupied space; the small bending shaft gland 100 is installed on the small bending shaft upper sleeve 95; the small bending shaft center shaft 102 is concentrically installed on the small bending shaft lower sleeve 96, with a compact structure and small occupied space; the first hexagon socket set screw 97 is installed on the small bending shaft lower sleeve 96 for locking the small bending shaft center shaft 102; the first bending cylinder transition mounting plate 98 is installed on the first bending shaft ejecting cylinder 99; the first bending cylinder joint 103 is installed on the first bending shaft ejecting cylinder 99; the first bending cylinder joint 103 is inserted through the small bending shaft lower sleeve 96.

[0066] For convenience in dealing with the bending operation of steel bars with a relatively large diameter, optionally, the steel bar bending mechanism includes a second flanged bronze bushing 110, a third flanged bronze bushing 112, a large bending shaft upper sleeve 104, a large bending shaft center shaft 111, a large bending shaft gland 109, a large bending shaft lower sleeve 105, a second hexagon socket set screw 106, a second bending cylinder transition mounting plate 107, a second bending shaft ejecting cylinder 108, and a second bending cylinder joint 113. The second flanged bronze bushing 110 and the third flanged bronze bushing 112 are jointly installed on the large bending shaft upper sleeve 104; the large bending shaft center shaft 111 is concentrically installed on the second flanged bronze bushing 110 and the third flanged bronze bushing 112, with a compact structure and small occupied space; the large bending shaft gland 109 is installed on the large bending shaft upper sleeve 104; the large bending shaft center shaft 111 is concentrically installed on the large bending shaft lower sleeve 105, with a compact structure and small occupied space; the second hexagon socket set screw 106 is installed on the large bending shaft lower sleeve 105 for locking the large bending shaft center shaft 111; the second bending cylinder transition mounting plate 107 is installed on the second bending shaft ejecting cylinder 108; the second bending cylinder joint 113 is installed on the second bending shaft ejecting cylinder 108; the second bending cylinder joint 113 is inserted through the large bending shaft lower sleeve 105.

[0067] The small bending shaft assembly structure 89 and three groups of large bending shaft assembly structures 90 are both installed on the bending center rotating shaft 23, meeting the requirements for the diameters and bending radii of different steel bars. When bending steel bars with different diameters, it can automatically adjust, select, and switch, eliminating the need for manual replacement, with high processing efficiency, low cost, and high response speed. The lower fixed disk 54 of the gearbox is connected to the bending mechanism base 82, connecting the upper half 91 and the lower half 94 of the bender together, with a compact overall structure.

[0068] According to the production requirements, the motor reducer 12 is powered on and travels to the steel bar bending die storage bin mechanism for die replacement. The die replacement steps are as follows:

[0069] Step 1: According to the known records in the system, the motor reducer 12 travels to a position with an empty bin in the steel bar bending die storage bin mechanism;

[0070] Step 2: The die ejecting cylinder 63 with a certain cylinder diameter ejects to eject the steel bar bending die 21;

[0071] Step 3: The die conversion cylinder 65 with a certain cylinder diameter ejects to unlock the steel bar bending die 21;

[0072] Step 4: The cylinder on the steel bar bending die storage bin mechanism retracts. At this time, the die has entered the storage bin. The die ejecting cylinder 63 with a certain cylinder diameter retracts, and the cylinder on the steel bar bending die storage bin mechanism extends to retrieve the die and record the position.

[0073] Step 5: According to the known bending cylinder diameter situation of customer requirements, the motor reducer 12 travels to the corresponding mold in the steel bar bending mold storage bin mechanism;

[0074] Step 6: The cylinder on the steel bar bending mold storage bin mechanism retracts, and the mold ejecting cylinder ejects with a cylinder diameter of 63;

[0075] Step 7: The cylinder on the steel bar bending mold storage bin mechanism extends, the mold ejecting cylinder with a cylinder diameter of 63 retracts, and the mold conversion cylinder with a cylinder diameter of 65 retracts to lock the steel bar bending mold 21;

[0076] Step 8: Complete the mold replacement.

[0077] After the mold replacement is completed, according to the length determined by the customer, the steel bar bending devices on both sides travel to the corresponding positions for bending, and at the same time, the steel bar bending support clamping mechanism travels to the middle of the steel bar bending devices on both sides to clamp the steel bar.

[0078] The steel bar bending mold storage bin mechanism may include a mounting seat, a clamping assembly, a driving assembly, and a guiding assembly. The clamping assembly is movably connected to the mounting seat through the guiding assembly. The clamping assembly is configured to clamp the mold, and the mold limited in the clamping assembly is parallel to the mold mounting surface. The driving assembly is connected to the clamping assembly and is configured to provide moving power to the clamping assembly. The mold loading mechanism and the steel bar bending device including the mold loading mechanism use the guiding assembly to guide the traveling path of the clamping assembly that clamps the mold, so that the clamping assembly can complete two sections of strokes with different directions under the action of a set of driving assemblies, simplifying the mold loading mechanism and the steel bar bending device and reducing the manufacturing cost.

[0079] The steel bar bending support clamping mechanism may include a mounting seat, a fixed clamping block, a movable clamping block, and a clamping driving assembly; the fixed clamping block is fixed to the mounting seat; the movable clamping block is slidably arranged on the mounting seat along a first direction, and a clamping space is formed between the movable clamping block and the fixed clamping block; the clamping driving assembly includes a swing arm, a support rod, and a clamping driving member. The support rod is hinged to the mounting seat, the swing arm is hinged to the support rod, and the first end of the swing arm is hinged to the movable clamping block, and the second end of the swing arm is hinged to the clamping driving member. The clamping driving member is hinged to the mounting seat. The swing arm is a labor-saving lever and can provide a greater clamping force to the movable clamping block, so as to effectively clamp the workpiece in the clamping space. According to the bending requirements of the steel bar, one or two steel bar bending devices can be provided. Taking two steel bar bending devices as an example, the two steel bar bending devices are respectively located on opposite sides of the steel bar bending support clamping mechanism, and based on the setting of the guide rail, the steel bar bending devices are all slidably arranged on the guide rail to adjust the bending position according to the length of the steel bar. The steel bar bending support clamping mechanism clamps the steel bar when the steel bar bending device bends the steel bar to prevent the steel bar from falling off.

[0080] The steel bar bending die 21 may include a base, a locking component, and a bending component. The base is provided with a locking groove, a first receiving groove, and a second receiving groove. The locking groove is used for passing through the fixed shaft 30 of the bending center die; the locking component includes a first locking member, a first elastic member, a second locking member, and a second elastic member. The first elastic member is arranged in the first receiving groove, the first locking member abuts against the first elastic member, the second elastic member is arranged in the second receiving groove, and the second locking member abuts against the second elastic member. The first locking member and the second locking member are used for clamping the fixed shaft 30 of the bending center die. The fixed shaft 30 of the bending center die can rotate to push open the first locking member and the second locking member, so that the fixed shaft 30 of the bending center die can be disengaged from the locking groove; the bending component includes a first bending die block and a second bending die block arranged at intervals on the base, and the first bending die block and the second bending die block have a corresponding relationship with the base. According to the required bending radius of the steel bar, the sizes of the first bending die block and the second bending die block and their positions relative to the base are set.

[0081] The specific process of locking and unlocking the steel bar bending mold 21 can be: a plurality of circumferentially distributed first protrusions are arranged on the top of the bending center mold fixed shaft 30, a first groove is formed between adjacent first protrusions, a second protrusion is arranged in the locking groove, and a second groove is formed between adjacent second protrusions. When the bending center mold fixed shaft 30 passes through the locking groove of the base, the first protrusion is aligned with the second groove and passes through the second groove. When the first protrusion completely enters the locking groove, it will push open the first locking member and the second locking member and compress the first elastic member and the second elastic member. At this time, the bending center mold fixed shaft 30 rotates forward under the action of the driving force, so that the first protrusion is aligned and locked with the second protrusion, so that the bending center mold fixed shaft 30 is axially limited and locked to prevent the bending center mold fixed shaft 30 from axially disengaging from the locking groove. At the same time, the first locking member and the second locking member are respectively stuck in the first groove between the adjacent first protrusions on the top of the bending center mold fixed shaft 30 by the elastic force of the first elastic member and the second elastic member. The first and second locking members clamp the bending center mold fixed shaft 30 extending into the locking groove under the elastic force of the first elastic member and the second elastic member, respectively, so that the bending center mold fixed shaft 30 is locked by the circumferential limit. When there is no external force, the bending center mold fixed shaft 30 cannot rotate freely, thereby realizing the locking of the steel bar bending mold 21 and the steel bar bending equipment. The bending center mold fixed shaft 30 can rotate in the opposite direction under the action of the driving force, so that the first protrusion on the top of the bending center mold fixed shaft 30 pushes open the first locking member and the second locking member, overcoming the elastic force of the first elastic member and the second elastic member, and then the first protrusion of the bending center mold fixed shaft 30 is staggered with the second protrusion of the locking groove without interference, so that the first protrusion can pass through the second groove, and the bending center mold fixed shaft 30 can be disengaged from the locking groove, thereby realizing the unlocking of the steel bar bending mold 21 and the steel bar bending equipment, realizing the automatic locking function of the steel bar bending mold 21, and facilitating the automation of mold switching, reducing labor costs, and reducing mold switching time.

[0082] A small bending axis assembly structure 89 and multiple sets of large bending axis assembly structures 90 are provided in the steel bar bending mechanism, which automatically select the corresponding bending axis according to different steel bar diameters; after the selection is completed, the bending motor 67 starts, driving the small synchronous pulley 87 and the large synchronous pulley 83 to rotate, thereby driving the bending center shaft 23 to rotate, so that the steel bar is bent into a desired shape.

[0083] When the bending operation of a steel bar is completed, the steel bar ejection cylinder 55 and the cylinders in the steel bar bending support clamping mechanism are extended simultaneously to eject the steel bar.

[0084] The steel bar bending mechanism is also equipped with bending limit, hard limit, soft limit and origin position.

[0085] Pneumatic circuit layout of the steel bar bending mechanism: Due to the setting of the small bending shaft assembly structure 89 and multiple groups of large bending shaft assembly structures 90, a large number of air pipes are used. An intermediate transition air pipe is designed through the bending air pipe transition plate 48. The reversible drag chain can be placed in the first bending drag chain box 49 and the second bending drag chain box 50, so that the air pipe enters the reversible drag chain and is transmitted to the main air circuit.

[0086] This embodiment also provides a steel bar bending method, which uses the above-mentioned steel bar bending equipment to perform steel bar bending operations, including the following steps:

[0087] The steel bar clamped by the steel bar bending die 21 is bent and formed by the steel bar bending mechanism;

[0088] The bent and formed steel bar is ejected by the steel bar ejection mechanism;

[0089] When bending steel bars with different diameters or different bending radius requirements, it is necessary to replace the steel bar bending die 21. The traveling mechanism drives the entire steel bar bending equipment to travel to the steel bar bending die storage bin mechanism;

[0090] The steel bar bending die 21 is ejected by the die ejection mechanism;

[0091] The steel bar bending die 21 is replaced by the die conversion mechanism.

[0092] The steel bar clamped by the steel bar bending die 21 is bent and formed by the steel bar bending mechanism, and the bent and formed steel bar is ejected by the steel bar ejection mechanism. When bending steel bars with different diameters or different bending radius requirements, it is necessary to replace the steel bar bending die 21. The traveling mechanism drives the entire steel bar bending equipment to travel to the steel bar bending die storage bin mechanism, the steel bar bending die 21 is ejected by the die ejection mechanism, and the steel bar bending die 21 is replaced by the die conversion mechanism. The steel bar bending die 21 can be quickly replaced, saving time and effort. This steel bar bending equipment can be applied to steel bar bending operations with different diameters or different bending radius requirements of steel bars, with high processing efficiency, low processing cost, and small occupied space.

[0093] Note that the above is only the preferred embodiment of the present invention and the applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Steel bar bending equipment, characterized in that: include: A mold ejection mechanism, used for ejecting the steel bar bending mold (21); A mold conversion mechanism, used for converting the steel bar bending mold (21); A walking mechanism capable of driving the entire steel bar bending device to move to the steel bar bending die storage bin mechanism so that the die conversion mechanism can replace the steel bar bending die (21); A steel bar bending mechanism, used for bending the steel bar clamped by the steel bar bending mold (21); The steel bar ejection mechanism is used to eject the bent steel bars.

2. The steel bar bending equipment according to claim 1, characterized in that: The walking mechanism comprises a curved walking support plate (2), a first support plate (1), a second support plate (6), a heavy-loaded roller (5), an anti-collision screw (4), an anti-collision shaft (8), a curved center steering fixed seat (7), a positioning block (9), a lubricating block (11), a lubricating mounting plate (10), a motor reducer (12), a motor mounting seat (3), a gear spacer (13), a driving gear (14), a gear pressure cover (20), a roller bearing (15) and a walking shaft (19); the first support plate (1) and the second support plate (6) are both fixed on the curved walking support plate (2); a plurality of heavy-loaded rollers (5) are respectively fixed on the first support plate (1) and the second support plate (6); the anti-collision screw (4) is fixed on the anti-collision shaft (8), and the anti-collision shaft (8) is fixed on the curved walking support plate (2); the curved center steering fixed seat (7) is fixed on the curved walking support plate (2); the positioning block (9) is fixed on the curved walking support plate (2); the lubricating block (11) is installed on the lubricating mounting plate (10), and the lubricating mounting plate (10) is installed on the curved walking support plate (2); the motor reducer (12) is fixed on the motor mounting seat (3); the gear spacer (13) passes through the motor reducer (12); the driving gear (14) passes through the motor reducer (12); the gear pressure cover (20) passes through the motor reducer (12) and is connected concentrically; the roller bearing (15) is installed on the walking shaft (19), and the roller bearing (15) is axially fixed by a first shaft elastic retaining ring (17); the walking shaft (19) is fixed on the curved walking support plate (2) by a flat washer (16) and a first nut (18).

3. The steel bar bending equipment according to claim 2, characterized in that: The steel bar bending mechanism comprises a first dustproof sealing ring (26), an upper center mold top shaft (31), a first plastic bearing (35), a second plastic bearing (37), a third plastic bearing (45), a lower center mold top shaft (42), an upper steel bar top shaft (39), a lower steel bar top shaft (40), a bending center mold fixed shaft (30), a second dustproof sealing ring (36) and a first bearing (38), wherein the first dustproof sealing ring (26) is mounted on the upper center mold top shaft (31); two of the first plastic bearings (35) are mounted on the upper center mold top shaft (31); the third plastic bearing (45) is mounted on the lower center mold top shaft (42); the upper center mold top shaft (31) and the second plastic bearing (37) are connected to each other. The lower center mold top shaft (42) is connected together; the upper steel bar top shaft (39) is connected with the lower steel bar top shaft (40) together; the upper steel bar top shaft (39) and the lower steel bar top shaft (40) pass through the upper center mold top shaft (31) and the lower center mold top shaft (42); the second plastic bearing (37) is fixed on the bending center mold fixed shaft (30); the second dustproof sealing ring (36) is installed on the bending center mold fixed shaft (30); the upper center mold top shaft (31) and the lower center mold top shaft (42) pass through the bending center mold fixed shaft (30) concentrically; the first bearing (38) is installed on the bending center mold fixed shaft (30).

4. The steel bar bending equipment according to claim 3, characterized in that: The steel bar bending mechanism comprises a star ring (28), a star-shaped sealing ring copper sleeve (29), a mold rotating sleeve (27), an O-ring (32), a gearbox central sleeve (41), a second bearing (43), a gearbox lower fixed plate (54), a large synchronous pulley (83), a rib (84), a bending gearbox (53), a first skeleton oil seal (34) and a second skeleton oil seal (44), wherein the star ring (28) is mounted on the star-shaped sealing ring copper sleeve (29); the star ring (28) is also mounted on the bending center mold fixed shaft (30); the star ring (28) is also mounted on the mold rotating sleeve (27); the O-ring (32) is mounted on the The gearbox center sleeve (41) is mounted on the mold rotating sleeve (27) and the bent center mold fixed shaft (30) concentrically; the second bearing (43) is fixed on the gearbox lower fixed plate (54); the large synchronous pulley (83) is connected to the retaining edge (84); the retaining edge (84) is mounted on the bent gearbox (53) through an oil seal spacer (33); the first skeleton oil seal (34) is mounted on the gearbox lower fixed plate (54); the second skeleton oil seal (44) is mounted on the oil seal spacer (33); the gearbox center sleeve (41) is fixed on the bent gearbox (53).

5. The steel bar bending equipment according to claim 4, characterized in that: The steel bar bending mechanism comprises a gearbox upper fixed plate (52), a bending center rotating shaft (23), a left side supporting sheet metal (24), a right side supporting sheet metal (25), a bending center steel bar supporting sheet metal (22), a bending center rotating plate (46), a bending drag chain box transition plate (51), a first bending drag chain box (49), a second bending drag chain box (50), a bending air pipe transition plate (48) and an L-shaped two-way (47); the gearbox upper fixed plate (52) is connected to the gearbox lower fixed plate (54) through the bending gearbox (53); the bending center rotating shaft (23) is fixed on the bending gearbox (53); the bending center mold fixed shaft (30) and the mold rotating sleeve (27) are integrally mounted concentrically on the bending center rotating shaft (23); the left side supporting sheet metal (24) and the right side supporting sheet metal (25) are mounted together on the gearbox lower fixed plate (54). ; The bending center steel bar support sheet metal (22) is installed together with the left support sheet metal (24) and the right support sheet metal (25); the bending center turntable (46) is connected to the bending center rotating shaft (23) and axially positions the bending center mold fixed shaft (30) and the mold rotating sleeve (27); the steel bar bending mold (21) is placed on the bending center mold fixed shaft (30); the bending drag chain box transition plate (51) is fixed on the fixed plate (52) on the gearbox; the first bending drag chain box (49) is connected to the second bending drag chain box (50); the bending drag chain box transition plate (51) is connected to the first bending drag chain box (49); the bending air pipe transition plate (48) is installed on the bending center rotating shaft (23); a plurality of L-shaped two-way valves (47) are installed on the bending air pipe transition plate (48).

6. The steel bar bending equipment according to claim 4, characterized in that: The steel bar bending mechanism comprises a motor fixing plate (71), a bending mechanism base (82), a bending motor (67), a first spacer (72), a small synchronous pulley (87), a tensioning connecting sleeve (86), a synchronous belt structure (88), a synchronous pulley shield (85) and a floating joint (81); the mold ejection mechanism comprises a mold ejection cylinder (63), a cylinder connecting shaft (62), an adjustable joint (61), a cylinder mounting plate (58), a flanged bearing (79) and a cover (80); the motor fixing plate (71) is fixed on the bending mechanism base (82); the bending mechanism base (82) is connected to the bending center steering fixing seat (7); the bending motor (67) is installed on the motor fixing plate (71); the first spacer (72) passes through the bending motor (67); the small synchronous pulley (87) is connected to the tensioning connecting sleeve (86), the synchronous belt structure (88), the synchronous pulley shield (85) and the floating joint (81); the mold ejection mechanism comprises a mold ejection cylinder (63), a cylinder connecting shaft (62), an adjustable joint (61), a cylinder mounting plate (58), a flanged bearing (79) and a cover (80); The connecting sleeve (86) is integrally connected to the bending motor (67); the synchronous belt structure (88) connects the small synchronous pulley (87) and the large synchronous pulley (83); the synchronous pulley shield (85) is mounted on the motor fixing plate (71); the floating joint (81) is connected to the mold ejection cylinder (63); the cylinder connecting shaft (62) is connected to the mold ejection cylinder (63); the adjustable joint (61) and the floating joint (81) are inserted together; the mold ejection cylinder (63) is fixed on the cylinder mounting plate (58); the flanged bearing (79) is mounted on the cylinder mounting plate (58); the blind cover (80) is fixed on the cylinder mounting plate (58); the gearbox lower fixing plate (54) is connected to the bending mechanism base (82).

7. The steel bar bending equipment according to claim 6, characterized in that: The steel bar ejection mechanism comprises an ejection shaft (60), a lower ejection plate (57), a steel bar ejection cylinder (55), a long connecting shaft (56), a cylinder mounting seat (64), a supporting fixed shaft (74), an ejection guide shaft (78), an upper ejection plate (73), a linear bearing (77), a bearing fixing seat (76) and a second shaft elastic retaining ring (75); the ejection shaft (60) is connected to the lower ejection plate (57); the ejection shaft (60) passes through the cylinder mounting plate (58) and is connected to the adjustable joint (61); the steel bar ejection cylinder (55) is connected to the lower ejection plate (57); the lower end steel bar ejection shaft (40) is connected to the steel bar The ejection cylinder (55) is connected together; the long connecting shaft (56) is connected together with the cylinder mounting plate (58) and the bending mechanism base (82); the cylinder mounting seat (64) is connected together with the bending mechanism base (82) and the cylinder mounting plate (58); the two supporting fixed shafts (74) and the ejection guide shaft (78) jointly connect the lower ejection plate (57) and the upper ejection plate (73); the linear bearing (77) is installed in the bearing fixing seat (76); the second shaft is clamped in the bearing fixing seat (76) with an elastic retaining ring (75) to prevent the linear bearing (77) from axial movement.

8. The steel bar bending equipment according to claim 7, characterized in that: The mold conversion mechanism comprises a cylinder fixing frame (68), a flange seat bearing (66), a mold conversion cylinder (65) and a cone-mouth fixing block (70); the cylinder fixing frame (68) is installed on the cylinder mounting seat (64); the flange seat bearing (66) and the mold conversion cylinder (65) are inserted together; the flange seat bearing (66) and the cylinder fixing frame (68) are connected together; the cone-mouth fixing block (70) is fixed on the upper push plate (73); the lower end center mold top shaft (42) and the cone-mouth fixing block (70) are connected together through a large flat washer (92) and a second nut (93).

9. The steel bar bending device according to any one of claims 1 to 8, characterized in that: The steel bar bending mechanism comprises a first curling copper sleeve (101), a small bending shaft upper sleeve (95), a small bending shaft core shaft (102), a small bending shaft pressure cover (100), a small bending shaft lower sleeve (96), a first hexagonal cone end set screw (97), a first bending cylinder transition mounting plate (98), a first bending shaft ejection cylinder (99) and a first bending cylinder joint (103); the first curling copper sleeve (101) is mounted on the small bending shaft upper sleeve (95); the small bending shaft core shaft (102) is coaxially mounted on the first curling copper sleeve (101); the small bending shaft pressure cover (100) is mounted on the small bending shaft upper sleeve (95) The small bending shaft center shaft (102) is coaxially mounted on the small bending shaft lower sleeve (96); the first hexagon socket cone end set screw (97) is mounted on the small bending shaft lower sleeve (96) for locking the small bending shaft center shaft (102); the first bending cylinder transition mounting plate (98) is mounted on the first bending shaft ejection cylinder (99); the first bending cylinder joint (103) is mounted on the first bending shaft ejection cylinder (99); the first bending cylinder joint (103) and the small bending shaft lower sleeve (96) are interlaced together; the steel bar bending mechanism includes a second curling copper sleeve (110), a third curling copper sleeve (112), a large curved shaft upper sleeve (104), a large curved shaft center shaft (111), a large curved shaft pressure cover (109), a large curved shaft lower sleeve (105), a second hexagonal cone end set screw (106), a second curved cylinder transition mounting plate (107), a second curved shaft ejector cylinder (108) and a second curved cylinder joint (113); the second curled copper sleeve (110) and the third curled copper sleeve (112) are installed together on the large curved shaft upper sleeve (104); the large curved shaft center shaft (111) is coaxially installed on the second curled copper sleeve (110) and the third curled copper sleeve (112); the large curved shaft pressure cover (109) is installed on the large bending shaft upper sleeve (104); the large bending shaft center shaft (111) is coaxially installed on the large bending shaft lower sleeve (105); the second hexagonal cone-end set screw (106) is installed on the large bending shaft lower sleeve (105) for locking the large bending shaft center shaft (111); the second bending cylinder transition mounting plate (107) is installed on the second bending shaft ejection cylinder (108); the second bending cylinder joint (113) is installed on the second bending shaft ejection cylinder (108); the second bending cylinder joint (113) and the large bending shaft lower sleeve (105) are interlaced together.

10. A steel bar bending method, characterized in that: The steel bar bending operation is performed using the steel bar bending equipment as described in any one of claims 1 to 9, comprising the following steps: The steel bar clamped by the steel bar bending mold (21) is bent into shape by a steel bar bending mechanism; The bent steel bars are ejected through the steel bar ejection mechanism; When bending steel bars with different steel bar diameters or different bending radius requirements, it is necessary to replace the steel bar bending mold (21), and the walking mechanism drives the entire steel bar bending equipment to move to the steel bar bending mold storage bin mechanism; ejecting the steel bar bending mold (21) through a mold ejection mechanism; The steel bar bending die (21) is replaced by a die conversion mechanism.

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