Processing system for steel rebar connecting threads that can withstand aircraft impacts

Abstract

This application relates to a processing system for rebar connection threads resistant to aircraft impact, comprising: a forming machine operable to form one end of a rebar and including a die; a thread rolling machine operable to process external threads on the formed rebar end, thereby forming a rebar connection thread resistant to aircraft impact; a first conveyor configured to convey the rebar forward to the forming machine and backward in a longitudinal direction during conveying; and a second conveyor configured to convey the rebar forward to the thread rolling machine and backward in a longitudinal direction during conveying, wherein the transfer devices of the first and second conveyors are configured to cooperate during transfer to transfer the rebar from the first to the second conveyor, and the die includes multiple segments with different inner diameters along its centerline. This application provides core equipment support for the high-quality, large-scale automated production of rebar connection threads resistant to aircraft impact.

Description

Technical Field

[0001] This application relates to the technical field of processing metal parts, such as rebar connecting threads, and more specifically, to a processing system for rebar connecting threads that can withstand aircraft impacts. Background Technology

[0002] In the civil construction of nuclear-grade safety structures such as nuclear power plants, the quality of the connections between the various reinforcing bars in the concrete structure is crucial, especially for structures such as shielded buildings that need to withstand extreme events (such as aircraft impacts). To prevent brittle fracture of the connections between the reinforcing bars, i.e., the connections between the reinforcing bar sleeves and the threaded ends of the reinforcing bars, under impact, and to avoid weak points in the concrete structure, it is necessary to adopt reinforcing bar connection technology that can withstand high-speed impacts and even aircraft impacts. However, the current processing of rebar connecting threads still mainly relies on skilled workers operating specialized machine tools, facing the following prominent technical bottlenecks: high labor intensity and low efficiency. The heavy weight of the rebar raw materials necessitates manual labor in loading, positioning, handling, and unloading, resulting in long processing cycles for individual rebar connecting threads and low overall production efficiency. Insufficient quality stability is another issue. Key parameters such as the external thread accuracy, perpendicularity, and surface quality of the rebar connecting threads are highly dependent on the operator's skill level and sense of responsibility. Human factors introduce significant quality fluctuations, making it difficult to ensure that each rebar connecting thread meets nuclear-grade safety standards. Furthermore, material and cost losses are high. Manual operation easily leads to processing errors, resulting in waste of rebar raw materials and rebar sleeves. The reliance on highly skilled operators also increases labor and management costs. Finally, there is a lack of traceability. Processing parameters and quality inspection results for rebar connecting threads are mostly based on paper records or manual judgment, making it difficult to create digital archives and achieve full-process quality traceability. This falls short of the high-standard quality management requirements of the nuclear industry. Summary of the Invention

[0003] One objective of this application is to provide a processing system for steel rebar connecting thread that can withstand aircraft impacts, which can overcome the technical bottlenecks of existing steel rebar connecting thread processing methods.

[0004] According to one aspect of this application, a processing system for steel rebar connecting threads resistant to aircraft impact is provided, wherein the processing system comprises:

[0005] A shaping machine that can be operated to shape one end of a steel bar so that the shaped end of the steel bar has a preset geometric size and surface finish;

[0006] A thread rolling machine is operable to process external threads on one end of a shaped steel bar, thereby forming a steel bar connection thread end that can withstand aircraft impact.

[0007] A first conveyor, arranged longitudinally adjacent to a forming machine, includes a conveying device and a transfer device. The conveying device of the first conveyor is configured to convey the reinforcing bars forward to the forming machine and backward during the conveying process.

[0008] The second conveyor, arranged longitudinally adjacent to the thread rolling machine and transversely adjacent to the first conveyor, includes a conveying device and a transfer device. The conveying device of the second conveyor is configured to convey the reinforcing bars forward to the thread rolling machine and backward during the conveying process. The transfer device of the first conveyor and the transfer device of the second conveyor are configured to cooperate during the transfer process to transfer the reinforcing bars from the first conveyor to the second conveyor.

[0009] The forming machine includes a forming device, which includes a mold core. The mold core has a through hole extending along its center line. The forming device is configured to move longitudinally so that one end of the reinforcing bar is shaped as it passes through the through hole.

[0010] The mold core includes multiple sections along its centerline that define through holes, and these multiple sections have different inner diameters.

[0011] Optionally, the plurality of segments include:

[0012] The guide section includes a first sub-section, the inner circumferential surface of which is formed by an arc surface to guide one end of the reinforcing bar into the through hole of the mold core;

[0013] The first working section has an inner circumferential surface that forms a first conical angle relative to the center line of the mold core, such that the inner diameter of the first working section decreases as it extends away from the guide section along the center line of the mold core, in order to extrude one end of the reinforcing bar that enters the through hole of the mold core.

[0014] The second working section has a constant inner diameter for sizing one end of the extruded steel bar; and

[0015] The release section has an inner circumferential surface that forms a second conical angle relative to the center line of the mold core. This causes the inner diameter of the release section to expand as it extends away from the second working section along the center line of the mold core, allowing stress to be released at one end of the sized steel bar.

[0016] Optionally, the guide section also includes a second sub-section located between the first sub-section and the first working section, and the second sub-section forms a third conical angle relative to the mold core centerline, such that the inner diameter of the second sub-section decreases as it extends along the mold core centerline toward the first working section, in order to guide one end of the reinforcing bar into the mold core through hole along the mold core centerline.

[0017] Optionally, the shaping machine also includes:

[0018] A pair of longitudinal guide rods, and the shaping device further includes a housing movably disposed on the pair of longitudinal guide rods in the longitudinal direction and a mold sleeve assembled to the housing, wherein the mold core is assembled to the mold sleeve;

[0019] A rebar positioning device, configured to align one end of an auxiliary rebar with the through hole in the mold core; and

[0020] A clamping device configured to clamp reinforcing bars.

[0021] Optionally, the thread rolling machine includes a pair of thread rolling wheels, each of the first and second thread rolling wheels having an outer peripheral surface with external threads, defining a predetermined gap between the outer peripheral surfaces of the first and second thread rolling wheels, and each of the first and second thread rolling wheels being configured to be driven to rotate about a third longitudinal axis parallel to the longitudinal direction, such that one end of the shaped steel bar, after entering the gap, is rotated and pressed by the outer peripheral surfaces of the first and second thread rolling wheels to form external threads.

[0022] Optionally, the thread rolling machine further includes a pressure stabilizing device, which includes: a pair of vertical guide rods; a carriage movably disposed on the pair of vertical guide rods in a vertical direction; a pressure stabilizing plate movably connected to the carriage in a vertical direction; and a spring between the carriage and the pressure stabilizing plate to provide a preload force downward in a vertical direction to the pressure stabilizing plate, wherein the pressure stabilizing plate is configured to abut against the reinforcing bar downward in a vertical direction.

[0023] Optionally, each of the conveying devices of the first and second conveyors has multiple pairs of rollers, each pair of rollers being configured to be driven to rotate about a transverse axis parallel to the transverse direction during conveying, and each of the first and second rollers in each pair of rollers having a working end face, defining a predetermined interval between the working end faces of the first and second rollers to allow the reinforcing bar to contact at least one of the working end faces of the first and second rollers within the interval during conveying;

[0024] Each of the transfer devices of the first and second conveyors has a plurality of rotating supports, each rotating support configured to be driven during transfer to rotate about a first longitudinal axis parallel to the longitudinal direction, and each rotating support having a first support portion and a second support portion angledly connected to the first support portion, wherein the first longitudinal axis extends through the second support portion, and wherein the first support portion is configured to carry the reinforcing bar during transfer, and the second support portion is configured to guide the transfer of the reinforcing bar during transfer; and

[0025] The second conveyor includes at least one suspension device, each of the at least one suspension device including a pair of rollers and a drive mechanism, each of the first roller and the second roller being configured to rotate about a second longitudinal axis parallel to the longitudinal direction, and each of the first roller and the second roller having an outer peripheral surface defining a predetermined gap between the outer peripheral surfaces of the first roller and the second roller, and the drive mechanism being configured to drive the pair of rollers to move within the gap so that at least one of the outer peripheral surfaces of the first roller and the second roller contacts the reinforcing bar.

[0026] Optionally, the processing system further includes:

[0027] A thread inspection machine, operable to determine the quality of steel rebar connection threads that can withstand aircraft impacts; and

[0028] The third conveyor, which is arranged adjacent to the second conveyor in the transverse direction, includes a conveying device and a transfer device. The conveying device of the third conveyor is configured to convey the steel bars forward to the thread inspection machine in the longitudinal direction and to retract them backward during the conveying process. The transfer devices of the second and third conveyors are configured to cooperate during the transfer process to transfer the steel bars from the second conveyor to the third conveyor.

[0029] Optionally, the thread inspection machine includes:

[0030] Clamping device, configured to clamp reinforcing bars; and

[0031] The detection device includes:

[0032] The system includes: a go / no-go gauge with internal threads that match those of qualified rebar connection threads; a torque supply and measuring device configured to supply and measure torque to the go / no-go gauge; and a flexible connector that torsionally connects the go / no-go gauge to the torque supply and measuring device to allow the go / no-go gauge to undergo compensating displacement in the radial direction relative to the torque supply and measuring device. The detection device is configured to drive the go / no-go gauge to a rebar connection thread resistant to aircraft impact via the torque supply and measuring device and to measure the torque generated during the tightening process to determine whether the rebar connection thread resistant to aircraft impact is qualified.

[0033] Optionally, the processing system further includes:

[0034] The chamfering machine is operable to form a chamfer on one end of the rebar before it is shaped, and the fourth conveyor is arranged adjacent to the first conveyor in the transverse direction and includes a conveying device and a transfer device. The conveying device of the fourth conveyor is configured to convey the rebar forward to the chamfering machine in the longitudinal direction and to retract it backward during the conveying process, and the transfer device of the fourth conveyor is configured to cooperate with the transfer device of the first conveyor during the transfer process to transfer the rebar from the fourth conveyor to the first conveyor.

[0035] The fifth conveyor is equipped with a capping machine and a fifth conveyor. The capping machine is operable to put a capping cap on the threaded ends of steel bars that are resistant to aircraft impact. The fifth conveyor is arranged adjacent to the third conveyor in the lateral direction and includes a conveying device and a transfer device. The conveying device of the fifth conveyor is configured to convey the steel bars forward to the capping machine in the longitudinal direction and to retract them backward during the conveying process. The transfer device of the third conveyor and the transfer device of the fifth conveyor are configured to cooperate during the transfer process to transfer the steel bars from the third conveyor to the fifth conveyor.

[0036] A feeding device and a sixth conveyor, the sixth conveyor having a transfer device, the feeding device being configured to upwardly convey the reinforcing bars to the transfer device of the sixth conveyor, the transfer device of the sixth conveyor and the transfer device of the fourth conveyor being configured to cooperate during the transfer process to transfer the reinforcing bars from the sixth conveyor to the fourth conveyor; and

[0037] The feeding device and the seventh conveyor, the seventh conveyor having a transfer device, the transfer device of the fifth conveyor and the transfer device of the seventh conveyor are configured to cooperate during the transfer process to transfer the steel bars with the packaging cap on from the fifth conveyor to the seventh conveyor, the transfer device of the seventh conveyor transfers the steel bars with the packaging cap on to the feeding device, and the feeding device conveys the steel bars with the packaging cap on downward.

[0038] The processing system provided in this application achieves fully automated continuous operation from end forming to thread processing of reinforcing bars through the integrated design of a forming machine, a thread rolling machine, and a first and second conveyor working in parallel. The conveying device of each of the first and second conveyors is responsible for conveying and positioning in the longitudinal direction, and the transfer device of each of the first and second conveyors realizes smooth and precise lateral handover between the two stations (i.e., the forming station containing the forming machine and the thread rolling station containing the thread rolling machine). While significantly improving production efficiency and processing stability, it effectively compresses the system layout space and constructs a modular conveyor foundation that is easy to expand laterally. Thus, it provides core equipment support for the high-quality, large-scale, automated production of reinforcing bar connection threads that can withstand aircraft impacts. Furthermore, the processing system can also include a feeding device, a chamfering machine, a thread inspection machine, a capping machine, and a unloading device, to achieve fully automated operation from automatic feeding of steel bar raw materials, pre-treatment of one end of the steel bar, online quality inspection, finished product protection to automated unloading. This further integrates discrete processes into a continuous intelligent production line, which not only comprehensively covers all key links in thread processing, ensuring seamless connection and process control between processes, but also significantly improves the reliability, product consistency, and quality traceability of the overall production line through closed-loop quality inspection. This provides a smart manufacturing solution for steel bar connection threads that is resistant to aircraft impacts, with a complete process chain, high stability, and full-process data traceability, to meet the high-standard quality management requirements of the nuclear industry.

[0039] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0040] The accompanying drawings, which form part of this specification, illustrate embodiments of this application and, together with the specification, serve to explain the principles of this application.

[0041] Figure 1 This is a top block diagram of a processing system for steel bar connecting thread ends that can withstand aircraft impact, according to one embodiment of this application.

[0042] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the shaping machine in the processing system.

[0043] Figure 3 yes Figure 2 A cross-sectional view of the mold core of one embodiment of the shaping machine of this application.

[0044] Figure 4 yes Figure 2 A cross-sectional view of the mold core of another embodiment of the shaping machine of this application.

[0045] Figure 5 yes Figure 1 A three-dimensional schematic diagram of a thread rolling machine in a machining system.

[0046] Figure 6 yes Figure 5 A partial 3D schematic diagram of a thread rolling machine.

[0047] Figure 7 yes Figure 1 A three-dimensional schematic diagram of the second conveyor in the processing system.

[0048] Figure 8 yes Figure 7 A partial three-dimensional schematic diagram of the second conveyor.

[0049] Figure 9 yes Figure 7 Another partial three-dimensional schematic diagram of the second conveyor.

[0050] Figure 10 yes Figure 1 A three-dimensional schematic diagram of the wire inspection machine in the processing system.

[0051] Figure 11 yes Figure 10 A partial 3D schematic diagram of a wire end inspection machine.

[0052] Figure 12 yes Figure 1 A three-dimensional schematic diagram of the chamfering machine in the machining system.

[0053] Figure 13 yes Figure 1 A three-dimensional schematic diagram of the cap-wearing machine in the processing system.

[0054] Figure 14 yes Figure 1 A three-dimensional schematic diagram of the feeding device in the processing system.

[0055] Figure 15 yes Figure 1 A three-dimensional schematic diagram of the sixth conveyor in the processing system. Detailed Implementation

[0056] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0057] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0058] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary implementations may have different values.

[0059] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0060] In this document, the terms “first” and “second” are used only to distinguish different components and should not be construed as indicating or implying the number, order, or relative importance of different components.

[0061] For ease of description, this application uses an orthogonal coordinate system to represent the orientation of the processing system for steel bar connecting threads resistant to aircraft impact (hereinafter referred to as the processing system). The X-axis represents the longitudinal direction, with the positive direction of the X-axis being rear and the negative direction being front; the Y-axis represents the transverse direction; and the Z-axis represents the vertical direction, with the positive direction of the Z-axis being up and the negative direction being down. However, this orthogonal coordinate system is for illustrative purposes only and does not constitute a limitation on the actual installation or use direction of the processing system.

[0062] Unless otherwise stated, the relevant terms in this application are defined as follows:

[0063] "Adjacent arrangement" refers to the arrangement relationship between two components without the intervention of other components;

[0064] "Detachable assembly" means that two components can be disassembled and reassembled without causing structural damage;

[0065] "Upstream" refers to the location of the process or workstation preceding the current process or workstation; and

[0066] "Downstream" refers to the location of the process or workstation following the current process or workstation.

[0067] like Figure 1 As shown, the processing system 10 has a compact system layout space. Specifically, the processing system 10 may include a forming machine 12 and a first conveyor 14 arranged adjacent to each other in the longitudinal direction on the forming station A, and a thread rolling machine 16 and a second conveyor 18 arranged adjacent to each other in the longitudinal direction on the thread rolling station B. The thread rolling station B is downstream of the forming station A. Correspondingly, the forming machine 12 and the thread rolling machine 16 are arranged adjacent to each other in the transverse direction, and the first conveyor 14 and the second conveyor 18 are arranged adjacent to each other in the transverse direction.

[0068] Additionally, the processing system 10 also includes a thread end inspection machine 20 and a third conveyor 22 arranged adjacent to each other in the longitudinal direction at the inspection station C, wherein the inspection station C is downstream of the thread rolling station B, and correspondingly, the thread rolling machine 16 and the thread end inspection machine 20 are arranged adjacent to each other in the transverse direction, and the second conveyor 18 and the third conveyor 22 are arranged adjacent to each other in the transverse direction.

[0069] Additionally, the processing system 10 also includes a chamfering machine 24 and a fourth conveyor 26 arranged adjacent to each other in the longitudinal direction at the chamfering station D, wherein the chamfering station D is upstream of the shaping station A, and correspondingly, the chamfering machine 24 and the shaping machine 12 are arranged adjacent to each other in the transverse direction, and the first conveyor 14 and the fourth conveyor 26 are arranged adjacent to each other in the transverse direction.

[0070] Additionally, the processing system 10 also includes a capping machine 28 and a fifth conveyor 30 arranged adjacent to each other in the longitudinal direction at the capping station E, wherein the capping station E is downstream of the inspection station C, and correspondingly, the capping machine 28 and the thread inspection machine 20 are arranged adjacent to each other in the transverse direction, and the third conveyor 22 and the fifth conveyor 30 are arranged adjacent to each other in the transverse direction.

[0071] Additionally, the processing system 10 also includes a loading device 32 and a sixth conveyor 34 at the loading station F, which are arranged adjacent to each other in the lateral direction. The loading station F is upstream of the chamfering station D, and correspondingly, the sixth conveyor 34 is arranged adjacent to the fourth conveyor 26 in the lateral direction.

[0072] Additionally, the processing system 10 also includes a feeding device 36 and a seventh conveyor 38 at the feeding station G, which are arranged adjacent to each other in the lateral direction. The feeding station G is downstream of the capping station E, and correspondingly, the seventh conveyor 38 is arranged adjacent to the fifth conveyor 30 in the lateral direction.

[0073] The following section will describe the various details of the machines in the processing system 10 (e.g., the shaping machine 12, the thread rolling machine 16, etc.).

[0074] Figure 2 The image shows a shaping machine 12 in a processing system 10 according to one embodiment of the present application. The shaping machine 12 is operable to shape one end of a steel bar so that the shaped end of the steel bar has a preset geometric dimension and surface finish.

[0075] Specifically, the shaping machine 12 includes: a pair of longitudinal guide rods 40; and a shaping device 42 movably disposed on the pair of longitudinal guide rods 40 in the longitudinal direction.

[0076] The shaping device 42 may include a housing having a housing through-hole extending through the housing along a housing centerline parallel to the longitudinal direction. For example, the housing includes: a base plate 44 having a base plate through-hole extending through the base plate 44, and the base plate 44 passing through the pair of longitudinal guide rods 40 to be slidably disposed on the pair of longitudinal guide rods 40 in the longitudinal direction; and a housing portion 46 having a housing portion through-hole 48 extending through the housing portion 46, the housing portion 46 being detachably assembled to the base plate 44, wherein when the housing portion 46 is assembled to the base plate 44, the base plate through-hole and the housing portion through-hole 48 together form the housing through-hole.

[0077] The shaping device 42 may further include a mold sleeve (not shown) having a mold sleeve through-hole extending through the mold sleeve along its centerline. The mold sleeve is fitted to the housing, for example, by interference fit within a housing through-hole, specifically within a base plate through-hole of the base plate 44 and / or a housing portion through-hole 48 of the housing portion 46. When the mold sleeve is fitted to the housing, the centerline of the mold sleeve coincides with the centerline of the housing.

[0078] The shaping device 42 may also include, for example, Figure 3 The mold core 52 shown has a mold core through hole 50 that runs through the mold core along the mold core center line H. When the forming machine 12 is operated, the forming device 42 moves in the longitudinal direction on the pair of longitudinal guide rods 40 so that one end of the steel bar is shaped as it passes through the mold core through hole 50.

[0079] Before the mold set is assembled to the outer shell, the mold core 52 can be assembled to the mold set first. For example, the mold core 52 can be assembled into the mold set through hole of the mold set with an interference fit, so that the center line H of the mold core coincides with the center line of the mold set. Then, the mold set with the mold core 52 assembled is assembled to the outer shell, so that the center line H of the mold core also coincides with the center line of the outer shell.

[0080] like Figure 3 As shown, the mold core 52 may include multiple sections defining the mold core through hole 50 along the mold core center line H (in the assembled state, the mold core center line H is parallel to the longitudinal direction), and the multiple sections have different inner diameters.

[0081] For example, the guide section includes a first sub-section 52a1, the inner circumferential surface of which is formed by an arc surface that smoothly transitions from the rear end face 52-2 of the mold core 52, so as to guide one end of the reinforcing bar smoothly into the mold core through hole 50 when the shaping device 42 moves backward in the longitudinal direction.

[0082] The first working section 52b, also referred to as the working cone, has an inner circumferential surface that forms a first conical angle F with respect to the mold core centerline H within the range of 10° to 30°. This results in the first working section 52b having an inner diameter that gradually decreases as it extends along the mold core centerline H away from the guide section or towards the second working section 52c, for pressing one end of the reinforcing bar that enters the mold core through hole 50 from the guide section. It can be understood that the maximum inner diameter of the first working section 52b is set to be smaller than the diameter of one end of the reinforcing bar.

[0083] The second working section 52c can also be referred to as the sizing zone, and has a constant inner diameter G for sizing one end of the extruded steel bar (i.e., so that one end of the extruded steel bar can be shaped to maintain the diameter after extrusion). It can be understood that the constant inner diameter G of the second working section 52c is set to be equal to the minimum inner diameter of the first working section 52b.

[0084] The inner circumferential surface of the release section 52d forms a second conical angle J relative to the center line H of the mold core, so that the release section 52d has an inner diameter that gradually expands as it extends away from the second working section 52c, so as to allow one end of the sized steel bar to gradually release stress after entering the release section 52d.

[0085] Then, when the shaping device 42 moves forward in the longitudinal direction, the end of the reinforcing bar after stress relief can re-enter the core hole 50 and be squeezed a second time, especially in the second working section 52c, so that the end of the shaped reinforcing bar can finally reach the preset geometric dimensions and surface finish by relying on the geometry and surface finish of the second working section 52c.

[0086] exist Figure 3 In the middle, the guiding section consists only of the first sub-section 52a1, that is, the arc surface of the first sub-section 52a1 smoothly transitions to the first working section 52b. Figure 3 The mold core 52 shown is particularly suitable for shaping one end of a steel bar with a short length and / or small diameter.

[0087] exist Figure 4The guiding section also includes a second sub-section 52a2 located between the first sub-section 52a1 and the first working section 52b. That is, the arc surface of the first sub-section 52a1 smoothly transitions to the second sub-section 52a2. The second sub-section 52a2 forms a third conical angle M within the range of 30° to 50° relative to the mold core centerline H, such that the second sub-section 52a2 has an inner diameter that decreases as it extends away from the first sub-section 52a1 or towards the first working section 52b along the mold core centerline H. This is used to guide one end of the reinforcing bar into the mold core through-hole 50 along the mold core centerline H, thereby ensuring the coaxiality requirement between the end of the reinforcing bar and the mold core through-hole 50. It can be understood that the diameter of one end of the reinforcing bar is set to be smaller than the minimum inner diameter of the second sub-section 52a2, so that the end of the reinforcing bar is finely adjusted radially and aligned when passing through the second sub-section 52a2, without being squeezed.

[0088] Figure 4 The mold core 52 shown is particularly suitable for shaping one end of a steel bar that is long and / or has a large diameter.

[0089] On the one hand, the die sleeve can be made of alloy structural steel (e.g., 40Cr). On the other hand, the die core 52 can be made of tungsten-cobalt cemented carbide (e.g., YG8), which has extremely high hardness and wear resistance and is suitable for extrusion processes.

[0090] Return to Figure 2 The forming machine 12 may also include a rebar positioning device 54, configured (or adapted) to assist one end of the rebar in aligning with the housing portion through-hole 48 and thus with the housing through-hole after the conveying process and before the operation of the forming machine 12. For example, the rebar positioning device 54 may include a track 56 and a movable member (not shown) movably (e.g., slidably) disposed on the track 56, the movable member having a positioning slot and movable between a first position and a second position, in which the movable member is retracted relative to the forming device 42 to avoid the forming device 42 from shaping one end of the rebar, and in the second position, the positioning slot of the movable member is aligned with the housing through-hole 48, and one end of the rebar can be calibrated by means of the positioning slot, after the movable member has moved to the first position, the forming device 42 can be moved longitudinally so that one end of the rebar passes through the housing through-hole 48 and thus through the mold core through-hole 50.

[0091] The forming machine 12 also includes a clamping device 58, which is configured to clamp the reinforcing bar downwards, for example, in a vertical direction before the forming device 42 is operated, and to maintain the clamped reinforcing bar during the operation of the forming device 42. For example, the clamping device 58 is driven by a hydraulic cylinder 60, but this is not necessary.

[0092] Figure 5The diagram shows a thread rolling machine 16 in a processing system 10 according to one embodiment of the present application. The thread rolling machine 16 is operable to process external threads on one end of a shaped reinforcing bar to form a reinforcing bar connection thread end (hereinafter simply referred to as a reinforcing bar connection thread end) that can withstand aircraft impact.

[0093] The thread rolling machine 16 includes a thread rolling device, which includes a pair of rotating shafts 61 and a pair of thread rolling wheels 62 driven by the pair of rotating shafts 61 respectively. Each of the first and second thread rolling wheels 62 has an outer peripheral surface with external threads. A predetermined gap is defined between the outer peripheral surfaces of the first and second thread rolling wheels. Each of the first and second thread rolling wheels is configured to be driven to rotate about a third longitudinal axis parallel to the longitudinal direction during operation of the thread rolling machine 16, such that one end of the shaped steel bar is rotated and squeezed by the outer peripheral surfaces of the first and second thread rolling wheels to form external threads after entering the gap.

[0094] The thread rolling machine 16 may also include a pressure stabilizing device 59, such as Figure 6 As shown, the pressure stabilizing device 59 includes: a first support frame 61a fixed to the base 16a of the thread rolling machine 16; a second support frame 63 rotatably connected to the first support frame 61a via a flipping rod 65 extending in the lateral direction, the second support frame 63 being fixed to the first support frame 61a via a detachable fastener 67 so that the second support frame 63 is held in a fixed working position relative to the first support frame 61a; a pair of vertical guide rods 64 mounted to the second support frame 63; a carriage 66 vertically movably (e.g., slidably) disposed on the pair of vertical guide rods 64; a pressure stabilizing plate 68 vertically movably connected to the carriage 66; and a spring 70 located between the carriage 66 and the pressure stabilizing plate 68 to provide a downward preload force in the vertical direction to the pressure stabilizing plate 68. The pressure plate 68 is configured to press against the reinforcing bar vertically downwards during the operation of the thread rolling machine 16, thereby applying a force at least equal to the preload force to the reinforcing bar. When the reinforcing bar is rotated and squeezed by the pair of thread rolling wheels 62, the pressure plate 68 can effectively suppress the upward movement of the reinforcing bar, ensuring the stability of the thread rolling process. Such movement is mainly caused by two factors: one is the vibration caused by the change in the size of the transverse and longitudinal ribs on the surface of the reinforcing bar relative to the center of the circle during rotation, and the other is the impact brought by the rotation and squeezing itself. If necessary, the slide 66 can be driven to move vertically upwards and downwards by the drive assembly 69 to ensure that the pressure plate 68 always effectively presses against the reinforcing bar. If necessary, the fastener 67 can also be removed to allow the second support frame 63 to rotate from the working position to the maintenance position relative to the first support frame 61a, so as to facilitate maintenance of the pair of thread rolling wheels 62, etc.

[0095] Figure 7 The illustration shows a second conveyor 18 in a processing system 10 according to one embodiment of the present application. The second conveyor 18 includes a conveyor frame 72 and a conveying device and a transfer device mounted to the conveyor frame 72.

[0096] like Figure 7 and Figure 8 As shown, the conveying device of the second conveyor 18 includes multiple pairs of rollers evenly distributed longitudinally on the conveyor frame 72. Each pair of rollers is configured to be driven to rotate about a transverse axis parallel to the transverse direction during conveying. Each of the first roller 74 and the second roller 75 in each pair has a working end face. A predetermined interval (approximately equal to or slightly larger than the diameter of the reinforcing bar 86) is defined between the working end faces 74a of the first roller 74 and the second roller 75, such that during conveying, the reinforcing bar 86 can contact at least one of the working end faces 74a of the first roller 74 and the second roller 75 within the interval. Thus, the reinforcing bar 86 can be moved longitudinally by dry friction between the reinforcing bar 86 and at least one of the working end faces 74a of the first roller 74 and the second roller 75. The multiple pairs of rollers can be driven simultaneously by a motor 76 and multiple drive sprockets 78a that transmit power via multiple transmission belts, but this is not mandatory. Therefore, the conveying device of the second conveyor 18 is configured to convey the steel bar 86 forward to the thread rolling machine 16 in the longitudinal direction and to retract it backward during the conveying process.

[0097] like Figure 8 As shown, the transfer device of the second conveyor 18 includes a plurality of rotating supports 78, each rotating support 78 having a first support portion 80 and a second support portion 82 angled to the first support portion 80 such that each rotating support 78 has a shape similar to a hockey stick. The second support portion 82 of each rotating support 78 is fixed to, for example, a longitudinal support rod 84 having the highest point of the conveyor frame 72 and is evenly distributed along the longitudinal direction on the longitudinal support rod 84. Therefore, the plurality of rotating supports 78 are configured to be driven during transfer to rotate to a first transfer position about a first longitudinal axis parallel to the longitudinal direction and coinciding with the axis of the longitudinal support rod 84 (therefore, the first longitudinal axis will be higher than the transverse axis). In the first transfer position, the first support portion 80 of each rotating support 78 is close to or aligned with a corresponding pair of rollers along the longitudinal direction, and the first support portion 80 has an upward-facing interface 80a and a bearing surface 80b with a height lower than the interface 80a, the bearing surface 80b being configured to bear the reinforcing bar 86 during transfer.

[0098] Continue to refer to Figure 8The second conveyor 18 further includes at least one suspension device, each of which includes a pair of rollers 88 and a drive mechanism. Each of the first and second rollers of the pair of rollers 88 is configured to rotate about a second longitudinal axis parallel to the longitudinal direction, and each of the first and second rollers has an outer peripheral surface defining a predetermined gap (smaller than the diameter of the reinforcing bar 86) between the outer peripheral surfaces of the first and second rollers. The drive mechanism is configured to drive the pair of rollers 88 to move within the gap before the thread rolling machine 16 is operated, so that at least one of the outer peripheral surfaces of the first and second rollers contacts the reinforcing bar 86. When the reinforcing bar 86 is rotated and squeezed by the pair of thread rolling wheels 62 during the operation of the thread rolling machine 16, the at least one suspension device can suppress the downward movement of the reinforcing bar 86 caused by the rotational squeezing. Therefore, the at least one suspension device can cooperate with the pressure stabilizing device 59 to ensure the stability of the thread rolling process.

[0099] The structure of the first conveyor 14 is the same as that of the second conveyor 18, except that the first conveyor 14 omits the at least one suspension device. The conveying device of the first conveyor 14 is configured to convey the reinforcing bar 86 forward to the forming machine 12 in the longitudinal direction and to retract it backward during the conveying process. The transfer device of the first conveyor 14 and the transfer device of the second conveyor 18 are configured to cooperate during the transfer process to transfer the reinforcing bar 86 from the first conveyor 14 to the second conveyor 18. Specifically, the plurality of rotating supports 78 of the transfer device of the first conveyor 14 are configured to be driven to rotate about a first longitudinal axis to a second transfer position. In the second transfer position, the free end of the second support portion 82 of each of the plurality of rotating supports 78 of the transfer device of the first conveyor 14 is aligned longitudinally with the intersection surface 80a of the second support portion 82 of each of the plurality of rotating supports 78 of the transfer device of the second conveyor 18 without interfering with the bearing surface 80b. At this time, the reinforcing bar 86 will roll or slide from the first support portion 80 to the second support portion 82 of each of the plurality of rotating supports 78 of the transfer device of the first conveyor 14, and the reinforcing bar 86 is guided by the second support portion 82 of each of the plurality of rotating supports 78 of the transfer device of the first conveyor 14 to continue rolling or sliding to the intersection surface 80a of the first support portion 80 of each of the plurality of rotating supports 78 of the transfer device of the second conveyor 18, until it is carried by the bearing surface 80b of the first support portion 80 of each of the plurality of rotating supports 78 of the transfer device of the second conveyor 18. Afterwards, the plurality of rotating supports 78 of the transfer device of the first conveyor 14 can rotate back to the first transfer position to complete one transfer.

[0100] Here, the drive mechanism can be configured, for example, as a first cylinder 90 to drive the pair of rollers 88 to move in a vertical direction. Alternatively or supplementarily, as... Figure 9 As shown, the pair of rollers 88 are fixed to one end of the rotating rod 89, and the other end of the rotating rod 89 is rotatably connected to the conveyor frame 72. The drive mechanism can be configured, for example, as a second cylinder 92, which can drive the rotating rod 89 to rotate relative to the conveyor frame 72 in a vertical plane defined by the longitudinal and vertical directions, so as to move in a forward and upward direction to contact the reinforcing bar 86.

[0101] Figure 10 A thread inspection machine 20 in a processing system 10 according to one embodiment of this application is shown. The thread inspection machine 20 is operable to determine whether the thread ends of a rebar connection are qualified. The thread inspection machine 20 includes: two inspection devices 94; and a clamping device 96 configured to be driven after the transfer process and before the operation of one of the inspection devices 94 to clamp the rebar, and to maintain the clamping of the rebar during the operation of one of the inspection devices 94. Specifically, as Figure 11 As shown, each testing device 94 includes: a go / no-go gauge 98 having an internal thread that matches the thread of a qualified rebar connection; the purpose of providing two testing devices 94 is to provide two go / no-go gauges, one of which has a different internal thread than the other, to define the range of qualified threads; a torque supply and measuring device configured to supply and measure torque to the go / no-go gauge 98, for example, the torque supply and measuring device includes a rotary motor 100 for supplying torque and a torque sensor 102 for measuring torque; and a flexible connector 104 that torsionally connects the go / no-go gauge 98 to the torque supply and measuring device to allow the go / no-go gauge 98 to produce a compensated displacement in the radial direction relative to the torque supply and measuring device, wherein the flexible connector 104 may be made of rubber or any other flexible coupling known in the prior art. Therefore, one of the detection devices 94 is configured to provide torque to the measuring device during the operation of the thread inspection machine 20, driving the go / no-go gauge 98 to tighten to the rebar connection thread and measuring the torque generated during tightening, in order to determine whether the rebar connection thread is qualified. Data generated during the operation of the thread inspection machine 20 can be stored in a memory for traceability. Optionally, return to... Figure 10 The thread inspection machine 20 also includes a longitudinal screw slide 106, a transverse screw slide 108, and a vertical screw slide 110, for moving the two inspection devices 94 in these three directions to assist the go / no-go gauge 98 in aligning with the thread of the rebar connection.

[0102] The structure of the third conveyor 22 is the same as that of the first conveyor 14. The conveying device of the third conveyor 22 is configured to convey the steel bar 86 forward to the thread inspection machine 20 in the longitudinal direction during the conveying process and to retract it backward. The transfer device of the third conveyor 22 is configured to cooperate with the transfer device of the second conveyor 18 during the transfer process to transfer the steel bar 86 from the second conveyor 18 to the third conveyor 22. This is similar to the cooperation between the transfer device of the first conveyor 14 and the transfer device of the second conveyor 18.

[0103] Figure 12 A chamfering machine 24 in a processing system 10 according to one embodiment of this application is shown. The chamfering machine 24 is operable to form a chamfer on one end of a reinforcing bar before it is shaped. The chamfering machine 24 may include: a chamfering device 112 including a chamfering rotary cutter configured to be driven to rotate about a third longitudinal axis parallel to the longitudinal direction, the chamfering rotary cutter forming a chamfer on one end of the reinforcing bar during operation of the chamfering machine 24; and a clamping device 114 configured to be driven after the transfer process and before operation of the chamfering device 112 to clamp the reinforcing bar 86, and to maintain the clamped reinforcing bar 86 during operation of the chamfering device 112.

[0104] The structure of the fourth conveyor 26 is the same as that of the first conveyor 14. The conveying device of the fourth conveyor 26 is configured to convey the steel bar 86 forward to the chamfering machine 24 in the longitudinal direction and to retract it backward during the conveying process. The transfer device of the fourth conveyor 26 is configured to cooperate with the transfer device of the first conveyor 14 during the transfer process to transfer the steel bar 86 from the fourth conveyor 26 to the first conveyor 14. This is similar to the cooperation between the transfer device of the first conveyor 14 and the transfer device of the second conveyor 18.

[0105] Figure 13 A capping machine 28 in a processing system 10 according to one embodiment of this application is shown. The capping machine 28 is operable to apply a capping cap to the end of a rebar connector thread. For example, the capping machine 28 includes: a storage compartment 116 for storing a plurality of capping caps; a capping device 118 for attaching one of the plurality of capping caps from the storage compartment 116 to the corresponding rebar connector thread; and a clamping device 120 configured to be driven after the transfer process and before the capping device 118 is operated to clamp the rebar 86, and to retain the clamped rebar 86 during the operation of the capping device 118.

[0106] The structure of the fifth conveyor 30 is the same as that of the first conveyor 14. The conveying device of the fifth conveyor 30 is configured to convey the steel bar 86 forward to the capping machine 28 in the longitudinal direction and to retract it backward during the conveying process. The transfer device of the third conveyor 22 and the transfer device of the fifth conveyor 30 are configured to cooperate during the transfer process to transfer the steel bar 86 from the third conveyor 22 to the fifth conveyor 30. This is similar to the cooperation between the transfer device of the first conveyor 14 and the transfer device of the second conveyor 18.

[0107] Figure 14 A loading device 32 in a processing system 10 according to one embodiment of this application is shown. The loading device 32 includes: a first platform 128 of lower height, on which each of a plurality of steel bars can be placed longitudinally; a plurality of cooperative and independent lifting mechanisms (shown only schematically herein, with first lifting mechanism 122, second lifting mechanism 124, and third lifting mechanism 126 as examples); and a second platform 130 of higher height. Each lifting mechanism includes a sloping top surface and a sloping side surface, and each lifting mechanism can descend to a first position and rise to a second position. The height of the sloping top surface 122a of the first lifting mechanism 122 in the first position is substantially equal to the height of the first platform 128. The height of the sloping top surface 122a of the first lifting mechanism 122 in the second position is substantially equal to the height of the sloping top surface 124 of the second lifting mechanism 124 in the second position is substantially equal to the height of the sloping top surface 126a of the third lifting mechanism 126 in the first position. The height of the sloping top surface 126a of the third lifting mechanism 126 in the second position is substantially equal to the height of the second platform 130. Thus, each reinforcing bar can be transported step by step from the first platform 128 to the second platform 130 via a stepped upward transport process. Specifically, for example, each reinforcing bar can be moved from the first platform 128 to the inclined top surface 122a of the first lifting mechanism 122 in the first position, and then the first lifting mechanism 122 rises to the second position. With the cooperation of the inclined top surface 122a of the first lifting mechanism 122 and the inclined side surface 124b of the second lifting mechanism 124, the reinforcing bar is smoothly transferred to the inclined top surface of the second lifting mechanism 124 in the first position. Then, the reinforcing bar is smoothly transferred in a similar manner to the inclined top surface 126a of the third lifting mechanism 126 in the first position, until it reaches the second platform 130.

[0108] Figure 15A sixth conveyor 34 in a processing system 10 according to one embodiment of this application is shown. The structure of the sixth conveyor 34 is the same as that of the first conveyor 14, except that the sixth conveyor 34 omits the conveying device. That is, the sixth conveyor 34 has a transfer device. The reinforcing bars arriving at the second platform 130 can be transferred to the transfer device of the sixth conveyor 34, and then the transfer device of the sixth conveyor 34 is configured to cooperate with the transfer device of the fourth conveyor 26 during the transfer process to transfer the reinforcing bars from the sixth conveyor 34 to the fourth conveyor 26.

[0109] The structure of the seventh conveyor 38 is the same as that of the sixth conveyor 34. That is, the seventh conveyor 38 also has a transfer device. The transfer devices of the fifth conveyor 30 and the seventh conveyor 38 are configured to cooperate during the transfer process to transfer the steel bars, capped with packaging, from the fifth conveyor 30 to the seventh conveyor 38. Then, the transfer device of the seventh conveyor 38 transfers the capped steel bars to the unloading device 36.

[0110] The structure of the unloading device 36 can be similar to or the same as that of the loading device 32. Thus, each rebar with a packaging cap can be transported step-by-step from the second platform to the first platform via a step-down transport process that is the reverse of the step-up transport process. Specifically, each rebar can move from the second platform to the inclined top surface of the third lifting mechanism in the second position. Then, the third lifting mechanism descends to the first position. With the cooperation of the inclined top surface of the third lifting mechanism and the inclined side surface of the second lifting mechanism, the rebar is smoothly transferred to the inclined top surface of the second lifting mechanism 124 in the second position. Then, the rebar is smoothly transferred in a similar manner to the inclined top surface of the first lifting mechanism in the second position, until it reaches the first platform.

[0111] Alternatively, some of the lifting mechanisms in the unloading device 36 can be omitted.

[0112] While some specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A processing system (10) for steel bar connecting thread ends that can withstand aircraft impact, characterized in that, The processing system (10) includes: A shaping machine (12) is operable to shape one end of a steel bar so that the shaped end of the steel bar has a preset geometric size and surface finish. Thread rolling machine (16), which is operable to process external threads on one end of the shaped steel bar, thereby forming a steel bar connection thread end that can withstand aircraft impact; A first conveyor (14), arranged longitudinally adjacent to the forming machine (12) and including a conveying device and a transfer device, wherein the conveying device of the first conveyor (14) is configured to convey the reinforcing bar (86) forward to the forming machine (12) and backward during the conveying process; and The second conveyor (18) is arranged adjacent to the thread rolling machine (16) in the longitudinal direction and adjacent to the first conveyor (14) in the transverse direction, and includes a conveying device and a transfer device. The conveying device of the second conveyor (18) is configured to convey the reinforcing bar (86) forward to the thread rolling machine (16) in the longitudinal direction and to retract it backward during the conveying process. The transfer device of the first conveyor (14) and the transfer device of the second conveyor (18) are configured to cooperate during the transfer process to transfer the reinforcing bar (86) from the first conveyor (14) to the second conveyor (18). The forming machine (12) includes a forming device (42), which includes a mold core (52). The mold core (52) has a mold core through hole (50) that runs through the mold core (52) along the mold core centerline (H). The forming device (42) is configured to move in the longitudinal direction so that one end of the reinforcing bar is shaped as it passes through the mold core through hole (50). The mold core (52) includes multiple sections defining the through hole (50) along the center line (H) of the mold core, and the multiple sections have different inner diameters. The conveying device of each of the first and second conveyors has multiple pairs of rollers, each pair of rollers being driven to rotate about a transverse axis parallel to the transverse direction during the conveying process, so as to allow the steel bar (86) to be conveyed between the working end face (74a) of the first roller (74) and the working end face of the second roller (75). Each of the first and second conveyors has a transfer device comprising a plurality of rotating supports (78), each rotating support having a first support portion (80) and a second support portion (82) angled to the first support portion such that each rotating support has the shape of a hockey stick. Each first support portion has an upward-facing interface (80a) and a bearing surface (80b) lower than the interface (80a). The plurality of rotating supports are configured to be driven to rotate to a first transfer position and to a second transfer position during the transfer process about a first longitudinal axis parallel to the longitudinal direction, extending through each second support portion and higher than the transverse axis. In the first transfer position, each first support portion is aligned longitudinally with a corresponding pair of rollers and the bearing surface (80b) of each first support portion bears a reinforcing bar (86). In the second transfer position, the free end of each second support portion (82) of the first conveyor is aligned longitudinally with the interface (80a) of the corresponding first support portion of the second conveyor without interfering with the bearing surface (80b). The second conveyor includes at least one suspension device, each of which includes a pair of rollers (88) and a rotating rod (89). The pair of rollers are rotatable about a second longitudinal axis parallel to the longitudinal direction and fixed to one end of the rotating rod. The other end of the rotating rod is rotatably connected to the conveyor frame (72) of the second conveyor. The rotating rod is configured to be driven to rotate before the thread rolling machine is operated, so that the pair of rollers move in a forward and upward direction to contact the reinforcing bar, thereby suppressing the downward movement of the reinforcing bar during the operation of the thread rolling machine. The thread rolling machine also includes a pressure stabilizing device (59), which includes a pressure stabilizing plate (68). The pressure stabilizing plate (68) is configured to press against the reinforcing bar downwards during the operation of the thread rolling machine to suppress the upward movement of the reinforcing bar.

2. The processing system (10) according to claim 1, characterized in that, The multiple segments include: The guiding section includes a first sub-section (52a1), the inner circumferential surface of which is formed by an arc surface to guide one end of the reinforcing bar into the core through hole (50). The first working section (52b) has an inner circumferential surface that forms a first conical angle (F) relative to the mold core centerline (H), such that the inner diameter of the first working section (52b) decreases as it extends away from the guide section along the mold core centerline (H) to extrude one end of the reinforcing bar into the mold core through hole (50). The second working section (52c) has a constant inner diameter (G) for sizing one end of the extruded steel bar; and The release section (52d) has an inner circumferential surface that forms a second conical angle (J) relative to the mold core centerline (H), such that the inner diameter of the release section (52d) expands as it extends away from the second working section (52c) along the mold core centerline (H), allowing stress to be released at one end of the sized steel bar.

3. The processing system (10) according to claim 2, characterized in that, The guiding section also includes a second sub-section (52a2) located between the first sub-section (52a1) and the first working section (52b), and the second sub-section (52a2) forms a third conical angle (M) relative to the core centerline (H), such that the inner diameter of the second sub-section (52a2) decreases as it extends along the core centerline (H) toward the first working section (52b) to guide one end of the reinforcing bar into the core through hole (50) along the core centerline (H).

4. The processing system (10) according to any one of claims 1 to 3, characterized in that, The shaping machine (12) also includes: A pair of longitudinal guide rods (40), and the shaping device (42) further includes a housing movably disposed on the pair of longitudinal guide rods (40) in the longitudinal direction and a mold sleeve assembled to the housing, wherein the mold core (52) is assembled to the mold sleeve; The rebar positioning device (54) is configured to align one end of the auxiliary rebar with the through hole (50) of the mold core; and A clamping device (58) is configured to clamp the reinforcing bar (86).

5. The processing system (10) according to any one of claims 1 to 3, characterized in that, The thread rolling machine (16) includes a pair of thread rolling wheels (62), each of the first thread rolling wheel and the second thread rolling wheel having an outer peripheral surface with external threads, defining a preset gap between the outer peripheral surfaces of the first thread rolling wheel and the second thread rolling wheel, each of the first thread rolling wheel and the second thread rolling wheel being configured to be driven to rotate about a third longitudinal axis parallel to the longitudinal direction, such that one end of the shaped steel bar is rotated and squeezed by the outer peripheral surfaces of the first thread rolling wheel and the second thread rolling wheel to form an external thread after entering the gap.

6. The processing system (10) according to claim 5, characterized in that, The stabilizing device (59) further includes: a pair of vertical guide rods (64); a carriage (66) movably disposed on the pair of vertical guide rods (64) in the vertical direction, a stabilizing plate (68) movably connected in the vertical direction to the carriage (66); and a spring (70) between the carriage (66) and the stabilizing plate (68) to provide a preload force downward in the vertical direction to the stabilizing plate (68), wherein the stabilizing plate (68) is configured to abut downward against the reinforcing bar (86) by means of the preload force.

7. The processing system (10) according to claim 1, characterized in that, A predetermined interval is defined between the working end face (74a) of the first roller (74) and the working end face of the second roller (75) to allow the reinforcing bar (86) to contact at least one of the working end face (74a) of the first roller (74) and the working end face of the second roller (75) within the interval; and a predetermined gap is defined between the outer peripheral surfaces of the first roller and the second roller of the pair of rollers (88), and the pair of rollers (88) is driven to move upward to contact the reinforcing bar (86) within the gap with at least one of the outer peripheral surfaces of the first roller and the second roller.

8. The processing system (10) according to any one of claims 1 to 3, characterized in that, The processing system (10) also includes: Thread inspection machine (20), operable to determine whether the thread ends of steel rebar connections resistant to aircraft impact are qualified; and The third conveyor (22), which is arranged adjacent to the second conveyor (18) in the transverse direction and includes a conveying device and a transfer device, is configured to convey the steel bar (86) forward to the thread inspection machine (20) in the longitudinal direction and to retract it backward during the conveying process, and the transfer device of the second conveyor (18) and the transfer device of the third conveyor (22) are configured to cooperate during the transfer process to transfer the steel bar (86) from the second conveyor (18) to the third conveyor (22).

9. The processing system (10) according to claim 8, characterized in that, The thread inspection machine (20) includes: Clamping device (96), configured to clamp reinforcing bar (86); and Detection device (94), comprising: A go / no-go gauge (98) having an internal thread that matches a qualified rebar connection thread; a torque supply and measuring device configured to supply and measure torque to the go / no-go gauge (98); a flexible connector (104) that torsionally connects the go / no-go gauge (98) to the torque supply and measuring device to allow the go / no-go gauge (98) to generate a compensated displacement relative to the torque supply and measuring device in the radial direction, wherein a detection device (94) is configured to drive the go / no-go gauge (98) to a rebar connection thread resistant to aircraft impact via the torque supply and measuring device and measure the torque generated during the tightening process for determining whether the rebar connection thread resistant to aircraft impact is qualified.

10. The processing system (10) according to claim 8, characterized in that, The processing system (10) also includes: A chamfering machine (24) and a fourth conveyor (26) are provided. The chamfering machine (24) is operable to form a chamfer on one end of the reinforcing bar before it is shaped. The fourth conveyor (26) is arranged adjacent to the first conveyor (14) in the transverse direction and includes a conveying device and a transfer device. The conveying device of the fourth conveyor (26) is configured to convey the reinforcing bar (86) forward to the chamfering machine (24) in the longitudinal direction and to retract it backward during the conveying process. The transfer device of the fourth conveyor (26) is configured to cooperate with the transfer device of the first conveyor (14) during the transfer process to transfer the reinforcing bar (86) from the fourth conveyor (26) to the first conveyor (14). The capping machine (28) and the fifth conveyor (30) are configured to cap the steel rebar connecting thread end, which is resistant to aircraft impact. The fifth conveyor (30) is arranged adjacent to the third conveyor (22) in the lateral direction and includes a conveying device and a transfer device. The conveying device of the fifth conveyor (30) is configured to convey the steel rebar (86) forward to the capping machine (28) in the longitudinal direction and to retract it backward during the conveying process. The transfer device of the third conveyor (22) and the transfer device of the fifth conveyor (30) are configured to cooperate during the transfer process to transfer the steel rebar (86) from the third conveyor (22) to the fifth conveyor (30). The feeding device (32) and the sixth conveyor (34), the sixth conveyor (34) having a transfer device, the feeding device (32) being configured to upwardly convey the reinforcing bar (86) to the transfer device of the sixth conveyor (34), the transfer device of the sixth conveyor (34) being configured to cooperate with the transfer device of the fourth conveyor (26) during the transfer process to transfer the reinforcing bar (86) from the sixth conveyor (34) to the fourth conveyor (26); and The feeding device (36) and the seventh conveyor (38) have a transfer device. The transfer device of the fifth conveyor (30) and the transfer device of the seventh conveyor (38) are configured to cooperate during the transfer process to transfer the steel bar (86) with the packaging cap on from the fifth conveyor (30) to the seventh conveyor (38). The transfer device of the seventh conveyor (38) transfers the steel bar (86) with the packaging cap on to the feeding device (36), and the feeding device (36) conveys the steel bar (86) with the packaging cap on downward.

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