A reinforcing steel bar straightening, cutting and heading integrated machine

Abstract

The application discloses a reinforcing steel bar straightening, cutting and heading integrated machine and relates to the technical field of reinforcing steel bar processing equipment. The reinforcing steel bar straightening, cutting and heading integrated machine comprises a cutting structure located on a reinforcing steel bar transmission path, a first hydraulic cylinder drives a cutting structure cutter to move to cut the reinforcing steel bar, a rotating drum is arranged on one side of the reinforcing steel bar cutting path, clamping structures are arranged around the rotating drum in the circumferential direction, the first hydraulic cylinder drives the rotating drum to rotate in the cutter resetting process of the cutting structure, and a heading structure is arranged on one side of the rotating path of the clamping structures. The reinforcing steel bar can be gradually and progressively extended, and the length of the base material required for heading processing is gradually supplied, so that the reinforcing steel bar has the capacity of graded heading, the problems of the end part cracking, deformation and incomplete forming of the reinforcing steel bar caused by one-time heading are effectively avoided, and on the other hand, new plastic base material is continuously provided by gradually controlling the extension and supply of the deformed base material during each graded heading, so that the cold upsetting deformation amount is shared and the end part cracking is avoided.

Description

Technical Field

[0001] This invention relates to the field of steel bar processing equipment technology, specifically to an integrated machine for straightening, cutting, and piercing steel bars. Background Technology

[0002] Steel bars are an indispensable core building material in infrastructure construction such as building engineering and road and bridge engineering. In the prefabrication process of steel bars, a series of processing operations such as straightening, cutting to a fixed length, and end capping are usually required to pre-fit and assemble them with various steel cages, steel frame and so on.

[0003] Among these processes, the upsetting technique, as a core method of rebar pre-processing, reduces the required anchorage length by forming an end for tensioning and anchoring at the rebar's end. However, existing upsetting equipment typically performs upsetting in a single step, with excessive deformation and excessive tensile stress on the end surface, easily leading to longitudinal splitting, radial cracks on the end face, and root folds. Although a few existing devices have the capability for graded upsetting, after the rebar is fixedly clamped (extending to a fixed length and only compressing the existing bulge), all deformation in graded upsetting relies on the initial extended section of metal, limiting the upper limit of the total deformation. Furthermore, at large expansion ratios, the circumferential tensile stress of the metal is very high, easily causing surface cracking and root folds. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an integrated machine for straightening and cutting rebar, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rebar straightening, cutting, and piercing integrated machine, comprising at least one set of straightening rollers for straightening and conveying rebar, further comprising: a cutting structure located on the rebar conveying path, wherein a first hydraulic cylinder is provided on one side of the cutting structure, the first hydraulic cylinder driving the cutting structure cutter to move and cut the rebar; a rotating drum located on one side of the rebar cutting path, wherein a clamping structure is provided around the rotating drum in its circumference, the clamping structure forming an annular channel after mold closing for clamping the cut rebar; the first hydraulic cylinder driving the cutting structure cutter to reset. During the process, the rotating drum is driven to rotate, which on the one hand drives the clamping structure holding the reinforcing bars to rotate and offset from the cutting structure, and on the other hand drives the clamping structure without clamped reinforcing bars to rotate until it coincides with the cut part of the cutting structure. The pier head structure is located on one side of the rotation path of the clamping structure and is used to clamp the graded pier head of the reinforcing bars in the clamping structure. The limiting push handle is located in the annular channel. The limiting push handle is provided with a sloping track on one side. The sloping track is directly opposite the pier head path of the pier head structure. When the limiting push handle passes through the sloping track, it drives the reinforcing bars to extend in stages, providing the required length of parent material for the pier head reinforcing bars of the pier head structure step by step.

[0006] Furthermore, the slope track includes a truncated cone located on one side of the limiting push handle, wherein the truncated cone is provided with a horizontal slide rail around its circumference, and the track path of the horizontal slide rail is provided with a progressively ascending inclined slide rail, and a stopping platform is provided at the top of the slope of each set of inclined slide rails, with the stopping platform facing the pier head path of the pier head structure.

[0007] Furthermore, it also includes a rotating sleeve located at the center of the rotation path of the limiting push handle, wherein the rotating sleeve is provided with a support rod around its circumference, one end of the support rod is provided with a support arm for supporting the limiting push handle, and the other end is provided with a sliding column; the sliding column passes through the sloping track, causing the sliding column to climb up the inclined slide rail step by step, and stop when passing through the parking platform, driving the limiting push handle to push the steel bar to extend in a controlled manner step by step and replenish the steel bar deformation base material.

[0008] Furthermore, it also includes a lead screw guide rail that passes through the frustum and the rotating sleeve. The lead screw guide rail has a lead screw inside and a slide table along the lead screw axis. The slide table is fixed to the frustum and rotatably connected to the rotating sleeve, and is used to adjust the initial advancing position of the limiting push handle.

[0009] Furthermore, the clamping structure includes a first semicircular mold and a second semicircular mold, wherein the first semicircular mold and the second semicircular mold are provided with a pin on one side, so that the second semicircular mold rotates around the pin as the axis, and closes and opens with the first semicircular mold.

[0010] Furthermore, a fixed cylinder is provided on the outer side of the rotating cylinder. The inner wall of the fixed cylinder is adapted to the clamping structure after the mold is closed, so as to maintain the mold-closed state of the clamping structure. A discharge opening is provided at the bottom of the fixed cylinder so that the clamping structure can open the mold under the action of gravity when it rotates through the discharge opening, and the steel bars behind the discharge pier are discharged.

[0011] Furthermore, it also includes: a worm gear, located at one end of the rotating drum shaft; a one-way gear structure, located on one side of the worm gear, and the one-way gear structure and the worm gear are connected by a second gear pair; a rack, which is slidably engaged with the one-way gear structure and connected to the first hydraulic cylinder, so that when the first hydraulic cylinder drives the cutting structure cutter to cut the steel bar, it drives the rack and the one-way gear structure to run unloaded, and when the first hydraulic cylinder drives the cutting structure cutter to reset, it drives the rack and the one-way gear structure to run under load, driving the rotating drum to rotate periodically, and pushing the clamping structure to alternately pass through the cutting section of the cutting structure.

[0012] Furthermore, the one-way gear structure includes: a one-way gear rotatably mounted on one side of the second gear pair shaft; a ratchet fixedly connected to the second gear pair shaft; the one-way gear has a pawl arranged around its circumference inside, the pawl being located on the teeth of the ratchet, so that when the one-way gear is subjected to force and rotates to one side, it drives the pawl to slide through the ratchet, driving the one-way gear structure to run under no-load, and when the one-way gear is subjected to force and rotates to the other side, it drives the pawl to push the ratchet to rotate, driving the one-way gear structure to run under load.

[0013] Furthermore, the cutting structure includes: a rebar traction mold located on the transmission path of the straightened rebar; a support guide rail located on one side of the extension path of the first hydraulic cylinder, and a cutter installed along its slide rail direction; the first hydraulic cylinder is connected to the cutter, driving the cutter to perform a shearing motion relative to the rebar traction mold to cut the rebar.

[0014] Furthermore, the pier head structure includes a second hydraulic cylinder fixed to one end of the fixed cylinder. The telescopic end of the second hydraulic cylinder is provided with a tooling plate, and a graded pier head mold is provided on the tooling plate. The graded pier head mold is positioned on the rotation and stopping path of the clamping structure to grade and pierce the steel bars that extend step by step.

[0015] The present invention has the following beneficial effects: (1) The integrated machine for straightening, cutting and piercing the steel bar can achieve the progressive extension of the steel bar in stages, and gradually replenish the length of the base material required for the piercing process. It can complete the tiered piercing process in conjunction with the tiered piercing mold. On the one hand, it has the ability to tiered piercing, which can effectively avoid problems such as cracking, deformation and incomplete forming of the steel bar end caused by one-time piercing. On the other hand, during each tiered piercing, by controlling the extension of the steel bar and replenishing the deformable base material, it continuously provides new plastic base material, distributes the amount of cold heading deformation each time, avoids end cracking, greatly improves the piercing processing accuracy and forming quality, and ensures product consistency.

[0016] (2) The steel bar straightening, cutting and piercing machine realizes the steel bar cutting operation by the cutting and resetting action of the cutting structure through the action of the first hydraulic cylinder. Furthermore, the timing difference generated by the cutting and resetting action drives the rotating drum to rotate periodically, ensuring the stability of the cutting operation while realizing the replacement of the clamping structure. The cut steel bar is pierced step by step in a step-by-step piercing method, which has higher production continuity and does not require additional drive mechanism. It realizes continuous cutting and piercing operation of steel bars by utilizing the differentiated transmission of the equipment itself. The equipment has a compact structure, lower energy consumption and stronger operation stability.

[0017] (3) The integrated rebar straightening, cutting and piercing machine integrates rebar straightening, cutting, graded progressive feeding, precise piercing and automatic unloading functions. It abandons the traditional step-by-step processing mode of separate equipment, eliminates the need for manual transfer and loading / unloading, greatly simplifies the processing procedures, significantly improves the efficiency of rebar processing, reduces the intensity of manual labor and equipment investment costs, and at the same time reduces the equipment footprint, improves site utilization, and is more practical for promotion. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first structure of the present invention; Figure 2 This is a schematic diagram of the second structure of the present invention; Figure 3 This is a schematic diagram of the first combination of the straightening roller group and the conveying roller group in this invention; Figure 4 This is a schematic diagram of the second combination of the straightening roller group and the conveying roller group in this invention; Figure 5 This is a schematic diagram of the combination of the cutting structure, the pier head structure, and the clamping structure in this invention; Figure 6 This is a schematic diagram of the force driving mechanism of the clamping structure in this invention; Figure 7 This is an assembly diagram of the clamping structure in this invention; Figure 8 This is a schematic diagram of the clamping structure in this invention. Figure 9 This is a schematic diagram of the mold opening of the clamping structure in this invention; Figure 10 This is a schematic diagram of the operating state of the clamping structure in this invention; Figure 11 This is a schematic diagram of the assembly of the limiting push handle in this invention; Figure 12 This is a schematic diagram of the force driving of the limiting push handle in this invention; Figure 13 This is an exploded view of the force-driven limiting push handle in this invention; Figure 14 This is a schematic diagram showing the force driving of the cutting structure and the rack in this invention; Figure 15 This is a schematic diagram of the first force driving mechanism of the unidirectional gear structure in this invention; Figure 16 This is a schematic diagram of the second force driving mechanism of the one-way gear structure in this invention; Figure 17 This is a schematic diagram of the pier head structure in this invention.

[0019] In the diagram, 1. Straightening roller assembly; 2. Conveying roller assembly; 210. Motor; 220. First gear pair; 230. Transmission belt; 3. Fixed cylinder; 310. Discharge opening; 4. Cutting structure; 410. Rebar traction mold; 420. Support guide rail; 430. Cutting blade; 5. Anchoring structure; 510. Second hydraulic cylinder; 520. Tooling plate; 530. Graded anchoring mold; 6. Rotary drum; 610. Second clearance groove; 7. Clamping structure; 710. Annular channel; 720. First semi-circular mold; 721. First clearance groove; 730. Second semi-circular mold 740, Pin; 8, First hydraulic cylinder; 9, Rack; 10, One-way gear structure; 1010, One-way gear; 1020, Pawl; 1030, Ratchet; 11, Second gear pair; 12, Worm gear; 13, Limiting push handle; 14, Lead screw guide rail; 15, Frustum; 1510, Horizontal slide rail; 1520, Inclined slide rail; 1530, Parking platform; 16, Rotating sleeve; 1610, Support rod; 1620, Support arm; 1630, Spring; 1640, Sliding column; 17, Lead screw; 1710, Slide table; 1720, Crank handle. Detailed Implementation

[0020] The following is based on Figures 1-17 This invention describes the integrated rebar straightening and cutting machine provided in an embodiment of the present invention.

[0021] Please see Figures 1-4 This invention provides a technical solution: a rebar straightening, cutting, and piercing integrated machine, comprising at least one set of straightening rollers 1, such as two sets of vertically opposite straightening rollers 1, to straighten the rebar in different directions. The straightening rollers 1 adopt a multi-roller symmetrical arrangement structure to continuously squeeze and straighten bent and twisted rebars. At the same time, a conveying roller group 2 is also provided on one side of the straightening rollers 1. The roller shaft of the conveying roller group 2 is provided with a first gear pair 220, and a motor 210 is installed on one set of roller shafts. When there are multiple sets of roller shafts, the transmission belt 230 can be used to realize the integrated transmission of multiple sets of roller shafts. Then, the active roller pressing and conveying of the conveying roller group 2 drives the straightened rebar to be transported at a uniform speed along a preset path.

[0022] In this implementation plan, such as Figure 5 , Figure 7As shown, a cutting structure 4 is also provided on the rebar transmission path. A first hydraulic cylinder 8 is provided on one side of the cutting structure 4. The first hydraulic cylinder 8 is the cutting power source. Through the extension and retraction action, it drives the cutter of the cutting structure 4 to complete the shearing and resetting action, realizing the fixed length cutting of the rebar. At the same time, a rotating cylinder 6 is also provided on one side of the rebar cutting path. The rotating cylinder 6 is an annular rotating base. Multiple sets of clamping structures 7 are evenly assembled around its circumference. The clamping structures 7 are openable and closable. After the mold is closed, a circular annular channel 710 is formed. The diameter of the annular channel 710 is adapted to the outer diameter of the rebar to be processed, which can stably "wrap" it. "After the steel bar is cut, it is prevented from shifting or bending locally when the steel bar is subjected to force in the subsequent pier. In addition, the extension and retraction stroke of the first hydraulic cylinder 8 and the rotation of the rotating drum 6 are coordinated. The specific working logic is as follows: After the first hydraulic cylinder 8 drives the cutter to cut the steel bar, it drives the rotating drum 6 to rotate at a certain angle during the reset process. At this time, the clamping structure 7 that holds the cut steel bar rotates with the rotating drum 6 and is offset from the cutting position of the cutting structure 4, and is removed from the cutting position. At the same time, the unloaded clamping structure 7 rotates to the cutting position, waiting for the next steel bar cutting and clamping, realizing the alternating operation of the work positions."

[0023] As a further solution to this embodiment, such as Figure 5 , Figures 8-9 As shown, a pier head structure 5 is assembled on the side of the rotation path of the clamping structure 7 (on the rotation path of the clamping structure 7 that clamps the reinforcing bars). As the core execution mechanism for piercing the end of the reinforcing bars, it performs graded piercing shaping on the end of the clamped and fixed reinforcing bars. At the same time, a limiting push handle 13 is assembled inside the annular channel 710 of the clamping structure 7. The limiting push handle 13 can slide along the axial direction of the reinforcing bars. A slope track is set on one side of the movement path of the limiting push handle 13. The slope track is precisely aligned with the piercing processing path of the pier head structure 5. When the limiting push handle 13 rotates with the rotating cylinder 6 and passes through the slope track, it is guided by the slope of the track and pushes the reinforcing bars in the corresponding annular channel 710 to extend out of the clamping structure 7 in a quantitative and progressive manner. This provides sufficient reinforcing bar material for piercing processing step by step. By replenishing the material in stages, graded piercing processing of the end of the reinforcing bars is achieved, avoiding damage to the reinforcing bars caused by single large deformation piercing.

[0024] like Figure 9 , Figures 11-13As shown, to ensure that the limiting push handle 13 pushes out the deformed steel reinforcement in an orderly and step-by-step manner, the sloping track includes a frustum 15 located on one side of the limiting push handle 13. The frustum 15 has a horizontal slide rail 1510 arranged around its circumference, serving as a reference sliding track to ensure the consistent sliding of the limiting push handle 13. Multiple sets of progressively ascending inclined slide rails 1520 are evenly arranged along the track path of the horizontal slide rail 1510. The slope of the inclined slide rails 1520 increases uniformly, and a stopping platform 1530 is provided at the top of the slope of each set of inclined slide rails 1520 for stopping. Platform 1530 is a horizontal platform, precisely aligned with the processing path of the pier head structure 5. As the limiting push handle 13 rotates periodically with the clamping structure 7, it slides along the inclined slide rail 1520, climbing up the slope step by step. Each step corresponds to one rebar feeding. After reaching the stopping platform 1530, it pauses briefly to provide stable processing time for the pier head structure 5, completing the first stage of pier head processing. Multiple sets of inclined slide rails 1520 cooperate with the stopping platform 1530 to achieve multi-stage progressive feeding and multi-stage precise pier head formation, ensuring that the pier head is formed uniformly and regularly.

[0025] As a further embodiment, a rotating sleeve 16 is provided at the center of the rotation path of the limiting push handle 13. The rotating sleeve 16 can rotate synchronously with the rotating cylinder 6. Multiple sets of support rods 1610 are slidably mounted around the rotating sleeve 16. Each support rod 1610 corresponds to a clamping structure 7. One end of each support rod 1610 has a support arm 1620 supporting the limiting push handle 13, and the other end has a sliding column 1640. The sliding column 1640 travels along the inclined track, gradually climbing up the inclined slide rail 1520 and stopping at the stopping platform 1530. This drives the limiting push handle 13 to push the reinforcing bar out in a controlled manner, replenishing the reinforcing bar deformation matrix. During operation, the rotating sleeve 16 rotates with the cylinder. The cylinder 6 rotates, causing the sliding column 1640 to climb up the inclined slide rail 1520 of the truncated cone 15 step by step. During the climbing process, the support rod 1610 and the support arm 1620 simultaneously push the limiting push handle 13 to move axially, realizing the step-by-step controlled extension of the steel bars, accurately supplying the base material required for the deformation of the pier head. The parking platform 1530 can ensure that the position is fixed after each feeding, eliminating processing deviation and greatly improving the processing accuracy of the pier head. In addition, the support rod 1610 is also equipped with a spring 1630, which is used to drive the sliding column 1640 to return to the horizontal slide rail 1510 after moving to the top of the inclined slide rail 1520. This allows the limiting push handle 13 to push the steel bars to extend step by step and then self-reset, preparing for the step-by-step extension of the next set of steel bars.

[0026] Furthermore, a screw guide rail 14 connecting the frustum 15 and the rotating sleeve 16 is set as a fixed base, providing support for the frustum 15 and the rotating sleeve 16. At the same time, a screw 17 is provided inside the screw guide rail 14, with a crank handle 1720 at one end of the screw 17, and a slide 1710 along the axial direction of the screw 17. The slide 1710 is fixed to the frustum 15 and rotatably connected to the rotating sleeve 16 (allowing the rotating sleeve 16 to rotate relative to the frustum 15, guiding the rotation of the limiting push handle 13 through the inclined slide rail 1520). By rotating the screw 17, the slide 1710 can be driven to move along the axial direction of the screw 17, simultaneously driving the overall axial displacement of the frustum 15 and the rotating sleeve 16, accurately adjusting the initial pushing position of the limiting push handle 13, adapting to the contact limiting of steel bars of different lengths and subsequent graded ejection, greatly improving the versatility and adaptability of the equipment.

[0027] It should be noted that by utilizing the annular channel 710 formed after the clamping structure 7 is closed, the reinforcing bar is circumferentially "wrapped" and limited. The limiting push handle 13 provided in the annular channel 710 is used to limit the contact of one end of the reinforcing bar, so that the entire reinforcing bar structure is "bound" and clamped in the clamping structure 7, completing the self-clamping and limiting of the reinforcing bar after cutting, which prepares for the subsequent reinforcing bar piering operation. Furthermore, since the entire reinforcing bar is "bound" in the clamping structure 7, it will not be subjected to local stress bending when subjected to the pressure of the pier, thus maintaining the overall straightness characteristics of the reinforcing bar.

[0028] like Figures 7-10 As shown, in order to realize the mold opening and closing actions of the clamping structure 7, the clamping structure 7 includes a first semi-circular mold 720 and a second semi-circular mold 730. The first semi-circular mold 720 is mounted on the rotating cylinder 6, and a pin 740 is provided on one side of the first semi-circular mold 720 and the second semi-circular mold 730, so that the second semi-circular mold 730 rotates around the pin 740 as the axis, and closes and opens with the first semi-circular mold 720. In addition, a first clearance groove 721 is also provided on the first semi-circular mold 720. The first clearance groove 721 coincides with the second clearance groove 610 provided on the rotating cylinder 6 to provide the space required for the support arm 1620 to drive the limit push handle 13 to move.

[0029] In this implementation plan, such as Figure 10As shown, a fixed cylinder 3 is also provided on the outside of the rotating cylinder 6. The rotating cylinder 6 is rotatably mounted on the fixed cylinder 3. The fixed cylinder 3 is a fixed cylindrical structure. The inner wall of the fixed cylinder 6 is precisely matched with the shape of the clamping structure 7 in the mold-closed state. When the clamping structure 7 rotates with the rotating cylinder 6 to the inner area of ​​the fixed cylinder 3, the inner wall of the fixed cylinder 3 limits and constrains the second semi-circular mold 730, forcibly maintaining the mold-closed state of the clamping structure 7 and maintaining the clamping limit of the cut steel bar to avoid the subsequent pressure of the pier head driving the steel bar to bend again. In addition, the bottom of the fixed cylinder 3 is provided with a discharge opening 310. When the clamping structure 7 rotates through the discharge opening 310, it loses the constraint of the cylinder wall. The second semi-circular mold 730 automatically flips and opens the mold around the pin 740 under its own weight and the weight of the steel bar, so that the steel bar after the pier head is processed can automatically fall and be discharged, realizing a fully automatic unloading process without manual operation. After the unloading is completed, as the rotating cylinder 6 continues to rotate, it drives the clamping structure 7 to close the mold again after opening and closing, preparing for the subsequent steel bar pier head.

[0030] It should be noted that the fixed cylinder 3 not only serves as a constraint support for the clamping structure 7 during mold closing and opening, but also as a fixed support platform for the cutting structure 4, the first hydraulic cylinder 8, the jacking structure 5, and the lead screw guide rail 14.

[0031] like Figures 5-6 , Figures 14-16 As shown, to achieve coordinated action between the rotating drum 6 and the cutting structure 4, a worm gear 12 is provided at one end of the rotating shaft of the rotating drum 6 (utilizing the self-locking characteristic of the worm gear 12 to achieve a stable static state when the rotating drum 6 is not under force). A one-way gear structure 10 is provided on one side of the worm gear 12, and the one-way gear structure 10 and the worm gear 12 are connected by a second gear pair 11 mounted on the rotating drum 6 (the second gear pair 11 can be set as a differential gear pair structure to amplify the driving force of the one-way gear structure 10 on the worm gear 12). At the same time, a rack 9 is slidably meshed on one side of the one-way gear structure 10. The rack 9 is connected to the first hydraulic cylinder 8, so that when the first hydraulic cylinder 8 drives the cutter of the cutting structure 4 to cut the steel bar, it drives the rack 9 and the one-way gear structure 10 to run unloaded. When the first hydraulic cylinder 8 drives the cutter of the cutting structure 4 to reset, it drives the rack 9 and the one-way gear structure 10 to run under load, driving the rotating drum 6 to rotate periodically, pushing the clamping structure 7 to alternately pass through the cutting part of the cutting structure 4. Specifically: The one-way gear structure 10 includes a one-way gear 1010 rotatably mounted on one side of the shaft of the second gear pair 11 and a ratchet 1030 fixedly connected to the shaft of the second gear pair 11. The one-way gear 1010 has a pawl 1020 circumferentially arranged inside it, located on the teeth of the ratchet 1030. When the one-way gear 1010 is subjected to force and rotates to one side (the first hydraulic cylinder 8 drives the cutting structure 4 to cut the steel bar, and the rack 9 drives the one-way gear 1010 to rotate to one side), the pawl 1020 slides through the ratchet 1030, driving the one-way gear structure 10 to run unloaded. During this process, the rotating drum 6 remains stationary. When the one-way gear 1010 is subjected to force and rotates to the other side (the first hydraulic cylinder 8 drives the cutting structure 4 to cut the steel bar), the pawl 1020 slides through the ratchet 1030, driving the one-way gear structure 10 to run unloaded. The reset movement drives the rack 9 to rotate the one-way gear 1010 to the other side, which in turn drives the pawl 1020 to push the ratchet 1030 to rotate, driving the one-way gear structure 10 to operate under load, which in turn drives the second gear pair 11 to rotate. Through the worm gear 12, the rotating drum 6 is driven to rotate at a certain angle. On the one hand, the clamping structure 7 holding the steel bar is rotated and transferred to the pier head structure 5. On the other hand, the unloaded clamping structure 7 is rotated to the cutting side of the cutting structure 4 to prepare for subsequent clamping of steel bars. Then, by utilizing the timing difference generated by the cutting and reset actions of the first hydraulic cylinder 8, the steel bar cutting operation and the periodic rotation of the clamping structure 7 are realized. The cut steel bars are then pierced step by step in a step-by-step manner, without the need for an additional drive mechanism.

[0032] like Figure 5 , Figure 14 As shown, in order to realize the cutting operation of the steel bar, the cutting structure 4 includes a steel bar traction mold 410 fixedly installed at one end of the fixed cylinder 3. The steel bar traction mold 410 is located on the transmission path of the straightened steel bar. At the same time, the steel bar traction mold 410 is provided with a support guide rail 420 with the same extension and retraction path as the first hydraulic cylinder 8, and a cutter 430 is installed along its slide rail direction. The first hydraulic cylinder 8 is connected to the cutter 430. By using the extension and retraction action of the first hydraulic cylinder 8, the cutter 430 is driven to perform a shearing motion relative to the steel bar traction mold 410 to cut the steel bar.

[0033] like Figure 5 , Figure 17 As shown, to achieve the reinforcement head forming operation, the reinforcement head structure 5 includes a second hydraulic cylinder 510 fixed to one end of the fixed cylinder 3. The telescopic end of the second hydraulic cylinder 510 is provided with a tooling plate 520, and a detachable graded reinforcement head mold 530 is provided on the tooling plate 520. The graded reinforcement head mold 530 is directly opposite the rotation and stopping path of the clamping structure 7. When the clamping structure 7 clamping the reinforcement rotates to the reinforcement head processing position and stops, the second hydraulic cylinder 510 pushes the graded reinforcement head mold 530 to move towards the reinforcement, and performs graded extrusion and reinforcement head forming on the end of the reinforcement that extends step by step from the limit push handle 13, thereby realizing multi-stage progressive reinforcement head forming and effectively improving the compactness and forming accuracy of the reinforcement head.

[0034] During use (working), the steel bar to be processed is passed through the straightening roller group 1. The straightening of the steel bar is completed by the squeezing and straightening of the straightening roller group 1. After the straightening is completed, the steel bar is uniformly transported to the cutting station through the conveying roller group 2. The straightened steel bar passes through the steel bar traction mold 410 and is transferred to the annular channel 710 of the clamping structure 7 after the mold is closed. After reaching the specified length, the first hydraulic cylinder 8 drives the cutter 430 to slide along the support guide rail 420 and cooperate with the steel bar traction mold 410 to cut the steel bar. During this process, the rack 9 moves synchronously with the first hydraulic cylinder 8 and runs unloaded with the one-way gear structure 10, while the rotating drum 6 remains stationary. After the cutting is completed, the first hydraulic cylinder 8 drives the cutter 430 to reset and move, and synchronously drives the rack 9 to move in the opposite direction. It operates under load with the one-way gear structure 10. Through the transmission of the second gear pair 11 and the worm gear 12, it drives the rotating drum 6 to rotate at a fixed angle, turns the clamping structure 7 that has clamped the steel bar out of the cutting position, and turns the unloaded clamping structure 7 into the cutting position, waiting for the next clamping operation. The clamping structure 7 for holding the reinforcing bars rotates with the rotating cylinder 6 to the head processing position. During this process, the rotating sleeve 16 drives the sliding column 1640 to climb up the inclined slide rail 1520 of the truncated cone 15 step by step, driving the limit push handle 13 to push the reinforcing bars to extend in stages. After each stage of extension, the reinforcing bars stop at the stopping platform 1530. The head structure 5 is used to perform the corresponding stage heading of the progressively extending reinforcing bars, thus completing the heading operation of the reinforcing bars in a staged and progressive manner. After the rebar pier head is processed, the clamping structure 7 continues to rotate with the rotating drum 6. When it passes the unloading opening 310 at the bottom of the fixed cylinder 3, the clamping structure 7 loses its limit constraint and automatically opens the mold. The processed rebar automatically falls and is unloaded under the action of gravity, completing a single processing cycle. Then the clamping structure 7 continues to rotate with the rotating drum 6 and is constrained by the fixed cylinder 3 to close the mold again, maintaining the continuous reciprocating operation of the equipment and realizing automated continuous processing.

Claims

1. A rebar straightening, cutting, and piercing integrated machine, comprising at least one set of straightening rollers (1), said straightening rollers (1) being used for straightening and conveying rebar, characterized in that, Also includes: The cutting structure (4) is located on the transmission path of the reinforcing bar. A first hydraulic cylinder (8) is provided on one side of the cutting structure (4). The first hydraulic cylinder (8) drives the cutting structure (4) to move and cut the reinforcing bar. Rotary drum (6) is located on one side of the rebar cutting path. The rotating drum (6) is provided with a clamping structure (7) around its circumference. After the clamping structure (7) is closed, it forms an annular channel (710) for clamping the cut rebar. During the process of the first hydraulic cylinder (8) driving the cutting structure (4) to reset the cutter, the rotating drum (6) is driven to rotate. On the one hand, the clamping structure (7) that clamps the steel bar is driven to rotate and be offset from the cutting structure (4). On the other hand, the clamping structure (7) that does not clamp the steel bar is driven to rotate until it coincides with the cutting part of the cutting structure (4). The pier head structure (5) is located on one side of the rotation path of the clamping structure (7) and is used to clamp the graded pier head of the steel bars in the clamping structure (7); The limiting push handle (13) is located in the annular channel (710). A slope track is provided on one side of the limiting push handle (13). The slope track is directly opposite the pier head path of the pier head structure (5). When the limiting push handle (13) passes through the slope track, it drives the steel bar to extend in stages, providing the required length of parent material for the pier head steel bar of the pier head structure (5) step by step.

2. The integrated machine for straightening, cutting, and piercing reinforcing bars according to claim 1, characterized in that, The slope track includes a truncated cone (15) located on one side of the limiting push handle (13). The truncated cone (15) is provided with a horizontal slide rail (1510) around its circumference. The track path of the horizontal slide rail (1510) is provided with a progressively ascending inclined slide rail (1520). A parking platform (1530) is provided at the top of the slope of each set of inclined slide rails (1520). The parking platform (1530) is directly opposite the pier head path of the pier head structure (5).

3. The integrated machine for straightening, cutting, and piercing reinforcing bars according to claim 2, characterized in that, It also includes a rotating sleeve (16) located at the center of the rotation path of the limiting push handle (13), wherein the rotating sleeve (16) is provided with a support rod (1610) around its circumference, one end of the support rod (1610) is provided with a support arm (1620) supporting the limiting push handle (13), and the other end is provided with a sliding column (1640). The sliding column (1640) travels along the sloping track, causing the sliding column (1640) to climb up the inclined slide rail (1520) step by step, and stop when it passes the parking platform (1530), driving the limit push handle (13) to push the steel bar to extend in a controlled manner step by step and replenish the steel bar deformation base material.

4. The integrated machine for straightening, cutting, and piercing reinforcing bars according to claim 3, characterized in that, It also includes a lead screw guide rail (14) that passes through the frustum (15) and the rotating sleeve (16), wherein the lead screw guide rail (14) is provided with a lead screw (17) inside, and a slide (1710) is provided along the axial direction of the lead screw (17), wherein the slide (1710) is fixed to the frustum (15) and rotatedly connected to the rotating sleeve (16) for adjusting the initial pushing position of the limiting push handle (13).

5. A rebar straightening, cutting, and piercing integrated machine according to any one of claims 2-4, characterized in that, The clamping structure (7) includes a first semicircular mold (720) and a second semicircular mold (730). A pin (740) is provided on one side of the first semicircular mold (720) and the second semicircular mold (730), so that the second semicircular mold (730) rotates around the pin (740) as the axis, and closes and opens with the first semicircular mold (720).

6. The integrated machine for straightening, cutting, and piercing reinforcing bars according to claim 5, characterized in that, The outer side of the rotating cylinder (6) is also provided with a fixed cylinder (3), wherein the inner wall of the fixed cylinder (3) is adapted to the clamping structure (7) after the mold is closed, and is used to maintain the mold closed state of the clamping structure (7). A discharge opening (310) is provided at the bottom of the fixed cylinder (3), so that the clamping structure (7) is opened by gravity when it rotates through the discharge opening (310), and the steel bars after the discharge pier are discharged.

7. The integrated machine for straightening, cutting, and piercing reinforcing bars according to claim 6, characterized in that, Also includes: Worm gear (12) is located at one end of the rotating shaft of the drum (6); A one-way gear structure (10) is provided on one side of the worm gear (12), and the one-way gear structure (10) and the worm gear (12) are connected by a second gear pair (11). The rack (9) is slidably engaged with the one-way gear structure (10) and connected to the first hydraulic cylinder (8). When the first hydraulic cylinder (8) drives the cutting structure (4) to cut the steel bar, the rack (9) and the one-way gear structure (10) are driven to run unloaded. When the first hydraulic cylinder (8) drives the cutting structure (4) to reset, the rack (9) and the one-way gear structure (10) are driven to run under load, driving the rotating drum (6) to rotate periodically and pushing the clamping structure (7) to alternately pass through the cutting part of the cutting structure (4).

8. The integrated machine for straightening, cutting, and piercing reinforcing bars according to claim 7, characterized in that, The one-way gear structure (10) includes: One-way gear (1010) is rotatably mounted on one side of the shaft of the second gear pair (11); The ratchet (1030) is fixed to the shaft of the second gear pair (11); The one-way gear (1010) has a pawl (1020) arranged around its circumference inside. The pawl (1020) is located on the teeth of the ratchet (1030). When the one-way gear (1010) is subjected to force and rotates to one side, it drives the pawl (1020) to slide through the ratchet (1030), driving the one-way gear structure (10) to run without load. When the one-way gear (1010) is subjected to force and rotates to the other side, it drives the pawl (1020) to push the ratchet (1030) to rotate, driving the one-way gear structure (10) to run under load.

9. A rebar straightening, cutting, and pier head integrated machine according to claim 7, characterized in that, The cutting structure (4) includes: The rebar pulling mold (410) is located on the transmission path of the straightened rebar; A support rail (420) is located on one side of the extension and retraction path of the first hydraulic cylinder (8), and a cutter (430) is installed along its slide rail direction. The first hydraulic cylinder (8) is connected to the cutter (430) and drives the cutter (430) to shear relative to the steel bar traction mold (410) to cut the steel bar.

10. A rebar straightening, cutting, and pier head integrated machine according to claim 7, characterized in that, The pier structure (5) includes a second hydraulic cylinder (510) fixed to one end of the fixed cylinder (3). The extension end of the second hydraulic cylinder (510) is provided with a tooling plate (520), and a graded pier mold (530) is provided on the tooling plate (520). The graded pier mold (530) is directly opposite the rotation and stopping path of the clamping structure (7) to grade and pierce the steel bars that extend step by step.

Images