Fully automated composite production line for straightening steel bars

Abstract

This utility model belongs to the field of steel bar manufacturing technology and discloses a fully automatic composite production line for straightening steel bars. The steel bar butt welding device is configured to weld the ends of two coils of steel bars together. A butt weld head detection device is located downstream of the steel bar butt welding device to detect the position of the butt weld head at the ends of the steel bars. A traction straightening device is located downstream of the butt weld head detection device to traction and straighten the steel bars. A counting device is located downstream of the traction straightening device to record the length of the steel bars. A flying shear device is located downstream of the counting device to cut the steel bars. A double-sided unloading device is located downstream of the flying shear device to separate steel bars containing butt weld heads from those without. A bundling device is located downstream of the double-sided unloading device to bundle steel bars without butt weld heads, thereby improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steel bar production technology, and in particular to a fully automatic composite production line for straightening steel bars. Background Technology

[0002] Continuous high-speed straightening of small-diameter wire rods requires cold straightening. However, the straightening machines on the market have relatively simple functions, slow straightening speed, low efficiency, high labor requirements, and complex processes. They cannot meet the needs of high-speed continuous straightening, automatic bundling, automatic transportation, automatic weighing, and automatic storage, resulting in low production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a fully automatic composite production line for straightening steel bars, thereby improving production efficiency.

[0004] To achieve this objective, the present invention adopts the following technical solution: The fully automated composite production line for straightening reinforcing bars includes: A rebar butt welding device, configured to butt weld two coils of rebar end to end; A butt weld head detection device is located downstream of the rebar butt welding device, and the butt weld head detection device is configured to detect the position of the butt weld head of the rebar at both ends. A traction straightening device is located downstream of the weld head detection device, and the traction straightening device is configured to traction and straighten the reinforcing bar; A counting device is located downstream of the traction straightening device, and the counting device is configured to record the length of the reinforcing bar. A flying shear device is disposed downstream of the counting device, and the flying shear device is configured to cut the reinforcing bar; A double-sided unloading device is disposed downstream of the flying shear device, and the double-sided unloading device is configured to separate the reinforcing bar containing the weld head and the reinforcing bar not containing the weld head; A bundling device is located downstream of the double-sided unloading device, and the bundling device is configured to bundle the reinforcing bars that do not contain the butt weld heads.

[0005] In some embodiments, the weld head inspection device includes: A conductive component, comprising a first conductive element and a second conductive element, wherein the first conductive element and the second conductive element are spaced apart along the conveying direction of the reinforcing bar, and the first conductive element and the second conductive element are capable of contacting the reinforcing bar, and both the first conductive element and the second conductive element are conductors; the first conductive element and the second conductive element are insulated from each other; A power source, wherein the positive terminal of the power source is connected to one of the first conductive element and the second conductive element, and the negative terminal of the power source is connected to the other of the first conductive element and the second conductive element; A monitoring device is connected to the circuit where the conductive component is connected to the power supply to identify whether the circuit is conducting.

[0006] In some embodiments, the welding head detection device further includes a frame, wherein a plurality of first conductive elements are spaced apart along the horizontal direction of the frame and staggered along the height direction of the frame, and the first conductive elements are insulated from the frame, so as to be able to clamp the reinforcing bar between the first conductive elements.

[0007] In some embodiments, the traction straightening device includes a housing and a first straightening mechanism and a second straightening mechanism disposed on the housing; The first straightening mechanism includes at least one set of first manual clamping components, at least one set of first electric clamping components, and at least three first rollers. The sliding end of the first manual clamping component is provided with a first manual pressure roller, and the sliding end of the first electric clamping component is provided with a first electric pressure roller. The first manual pressure roller and the first electric pressure roller are located above the first rollers and are staggered from the first rollers. The first manual clamping component and the first electric clamping component can respectively drive the first manual pressure roller and the first electric pressure roller to move toward the first rollers to clamp the reinforcing bar. The second straightening mechanism includes multiple sets of pneumatic clamping assemblies arranged sequentially along the direction of rebar conveying and multiple second rollers corresponding one-to-one with the multiple sets of pneumatic clamping assemblies. Each set of pneumatic clamping assemblies has a pneumatic pressure roller located above the corresponding second roller at its sliding end. The pneumatic clamping assembly can drive the pneumatic pressure roller to move toward the second roller to clamp the rebar.

[0008] In some embodiments, the traction straightening device further includes a third straightening mechanism disposed in the housing and located downstream of the second straightening mechanism. The third straightening mechanism includes a second electric clamping assembly, a lowering assembly, and a second manual clamping assembly arranged sequentially along the rebar conveying direction. The sliding end of the second electric clamping assembly is provided with a second electric pressure roller. The sliding end of the lowering assembly is provided with a plurality of lowering rollers arranged sequentially along the rebar conveying direction. The sliding end of the second manual clamping assembly is provided with a second manual pressure roller. The third straightening mechanism further includes multiple third rollers, with the second electric pressure roller, the lower pressure roller, and the second manual pressure roller located above the third rollers and offset from them; The second manual clamping assembly, the lowering assembly, and the second manual clamping assembly can respectively drive the second electric pressure roller, the lowering roller, and the second manual pressure roller to move toward the third roller to clamp the reinforcing bar.

[0009] In some embodiments, the double-sided unloading device includes: Frame body; The material distribution assembly includes a material distribution frame, a first material distribution arm, a second material distribution arm, a first material distribution drive, and a second material distribution drive. The material distribution frame is disposed on the frame body and has a first guide surface and a second guide surface arranged at an angle. The first guide surface and the second guide surface are both inclined upward from the side away from each other to the side closer to each other. The first material distribution arm and the second material distribution arm are respectively disposed above the first guide surface and the second guide surface. The first material distribution drive is used to drive the first material distribution arm to move closer to or away from the second material distribution arm, and the second material distribution drive is used to drive the second material distribution arm to move closer to or away from the first material distribution arm. The first material distribution arm and the second material distribution arm can close together to form an accommodating space. When the first material distribution arm moves away from the second material distribution arm, the steel bar falls from the accommodating space to the first guide surface. When the second material distribution arm moves away from the first material distribution arm, the steel bar falls from the accommodating space to the second guide surface.

[0010] In some embodiments, the material distribution assembly further includes a first rotating arm, a first swing arm, a second rotating arm, and a second swing arm. The first rotating arm is rotatably connected to the frame body via a first rotating shaft. One end of the first swing arm is connected to the first rotating shaft, and the other end is connected to the first material distribution drive. The second rotating arm is rotatably connected to the frame body via a second rotating shaft. One end of the second swing arm is connected to the second rotating shaft, and the other end is connected to the second material distribution drive. And / or, the double-sided unloading device further includes two sets of screw feeding assemblies, one set of which is connected to the downstream end of the first guide surface, and the other set is connected to the downstream end of the second guide surface. Each screw feeding assembly includes a conveying shaft, a conveying spring, and a conveying drive component. The conveying drive component is used to drive the conveying shaft to rotate, and the conveying spring is sleeved on the conveying shaft and can rotate with the conveying shaft. The conveying springs in the two sets of screw feeding assemblies have opposite directions of rotation, and the two conveying shafts on the same axis are connected to the same conveying drive component.

[0011] In some embodiments, the bundling device includes: A roller conveyor for conveying bundles of steel bars formed from the steel bars; A first binding mechanism and a second binding mechanism are arranged at intervals along the conveying direction of the roller conveyor. An alignment mechanism is disposed upstream of the first binding mechanism, and the alignment mechanism is used to push the end of the reinforcing bar; A clamping mechanism, used to clamp the bundle of reinforcing bars; In both the first and second binding mechanisms, at least the first binding mechanism has the clamping mechanism at both the front and rear.

[0012] In some embodiments, the clamping mechanism includes a first clamping arm, a second clamping arm, a clamping seat, a first clamping drive member, and a second clamping drive member. The first clamping arm and the second clamping arm are both rotatably mounted on the clamping seat. The first clamping drive member is connected to the first clamping arm and is used to drive the first clamping arm to rotate. The second clamping drive member is connected to the second clamping arm and is used to drive the second clamping arm to rotate.

[0013] A production method is also provided, implemented based on the fully automated composite production line for straightening steel bars as described above, which includes the following steps: The rebar welding machine welds the ends of two coils of rebar together. An insulating ring is wrapped around the outside of the weld joint of the reinforcing bar; The welding head detection device identifies the position of the welding head; The traction straightening device straightens the reinforcing bar, and the counting device records the length of the reinforcing bar; The flying shear device cuts the reinforcing bar; The double-sided unloading device separates the reinforcing bar containing the weld head from the reinforcing bar not containing the weld head; The bundling device bundles the reinforcing bars that do not contain the weld joints.

[0014] The beneficial effects of this utility model are: The fully automated composite production line for straightening steel bars described above can weld two steel bars together using a steel bar welding device, thereby achieving uninterrupted feeding for straightening. Since the properties of the weld joint formed by the two steel bars are different from those of the steel bars themselves, the position of the weld joint can be identified by a weld joint detection device. Combined with the length recorded by a counting device, the steel bars are cut by a flying shear device. A double-sided unloading device can distinguish between steel bars with and without weld joints. Subsequently, steel bars without weld joints are bundled by a bundling device, achieving continuous production and improving production efficiency. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the fully automated composite production line for straightening steel bars according to an embodiment of this utility model; Figure 2 This is a schematic diagram of the welding head detection device described in an embodiment of the present invention; Figure 3 This is a partial cross-sectional view of the online detection device for steel bar butt welds described in this embodiment of the present invention; Figure 4 yes Figure 3 An enlarged view of point A; Figure 5 This is a schematic diagram of the traction straightening device described in an embodiment of the present utility model; Figure 6 yes Figure 5 Cross-sectional view at point AA; Figure 7 yes Figure 5 Cross-sectional view at point BB; Figure 8 yes Figure 5 Cross-sectional view at point CC; Figure 9 yes Figure 5 Cross-sectional view at point DD; Figure 10 yes Figure 5 Cross-sectional view at EE; Figure 11 This is a three-dimensional structural diagram of the double-sided unloading device described in one embodiment of the present utility model; Figure 12 This is a three-dimensional structural diagram of the double-sided unloading device described in another embodiment of the present invention; Figure 13 This is a side view of the double-sided unloading device described in an embodiment of this utility model; Figure 14 This is a cross-sectional view of the double-sided unloading device described in an embodiment of this utility model; Figure 15 yes Figure 14 Enlarged view of point B in the middle; Figure 16 This is a front view of the rebar bundling device described in this embodiment of the utility model; Figure 17 This is a top view of the rebar bundling device described in this embodiment of the utility model; Figure 18 This is a view showing the steel bar entering the first binding mechanism from the side, as described in this embodiment of the utility model. Figure 19 This is a view of the first bundling mechanism in the present invention when it is closed and bundled. Figure 20This is a schematic diagram of the production method described in an embodiment of the present invention.

[0016] In the picture: 1. Rebar butt welding device; 2. Weld head inspection device; 21. First conductive component; 211. Wheel seat; 212. Wheel body; 22. Second conductive component; 23. Power supply; 24. Wire; 25. Frame; 26. Insulating plate; 27. Insulating sleeve; 271. Insulating collar; 272. Insulating sheet; 28. Insulating ring; 3. Traction straightening device; 31. Box body; 311. First top cover; 312. Second top cover; 32. First straightening mechanism; 321. First manual clamping assembly; 3211. First manual pressure roller; 3212. Manual nut seat; 3213. Manual screw; 3214. Manual slider; 3215. First compression spring; 3216. First thrust ball bearing; 322. First electric clamping assembly; 3221. First electric pressure roller; 3222. First motor reducer; 3223. Electric nut seat; 3224. First electric screw; 3225. Electric slider; 3226. Second compression spring; 3227. Second thrust ball bearing; 323. First roller; 33. Second straightening mechanism; 331. Pneumatic clamping assembly; 3311. Pneumatic pressure roller; 3312. Cylinder; 3313. Pneumatic slider; 332. Second roller; 34. Third straightening mechanism; 341. Second electric clamping assembly; 3411. Second electric pressure roller; 342. Lowering assembly; 3421. Lower pressure roller; 3422. Sliding mounting body; 3423. Second motor reducer; 3424. Threaded sleeve; 3425. Second electric screw; 3426. Third thrust ball bearing; 3427. Third compression spring; 343. Second manual clamping assembly; 3431. Second manual pressure roller; 344. Third roller; 35. First traction mechanism; 351. First traction motor; 352. First large pulley; 353. First small pulley; 354. First belt; 36. Second traction mechanism; 361. Second traction motor; 362. Second large pulley; 363. Second small pulley; 364. Second belt; 4. Counting device; 5. Flying shear device; 6. Double-sided unloading device; 61. Frame body; 62. Material distribution assembly; 621. Material distribution frame; 6211. First guide surface; 6212. Second guide surface; 622. First material distribution arm; 623. Second material distribution arm; 624. First material distribution drive component; 625. Second material distribution drive component; 626. First rotating arm; 627. Second rotating arm; 628. First swing arm; 629. Second swing arm; 63. Screw feeding assembly; 631. Conveyor shaft; 632. Conveyor spring; 633. Conveyor drive component; 64. Material blocking assembly; 641. Material blocking drive component; 642. Material blocking arm; 65. Material receiving assembly; 651. Material receiving drive component; 652. Material receiving plate; 66. Material dropping plate; 67. Head-trimming baffle; 7. Bundling device; 71. Roller conveyor; 72. Alignment mechanism; 73. First binding mechanism; 74. Second binding mechanism; 75. Clamping mechanism; 751. First clamping arm; 752. Second clamping arm; 753. Clamping seat; 754. First clamping drive; 755. Second clamping drive; 8. Automatic feeding trolley; 9. Passive straightening device; 10. Inclined loading device; 20. Conveying platform; 30. Weighing platform; 40. Storage platform. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1 to 19 As shown, this utility model provides a fully automatic composite production line for straightening reinforcing bars, which includes a reinforcing bar butt welding device 1, a butt weld head detection device 2, a traction straightening device 3, a counting device 4, a flying shear device 5, a double-sided unloading device 6, and a bundling device 7. The reinforcing bar butt welding device 1 is configured to butt weld the ends of two coils of reinforcing bars; the butt weld head detection device 2 is located downstream of the reinforcing bar butt welding device 1 (upstream and downstream are based on the direction of reinforcing bar conveying), and is configured to detect the position of the butt weld head of the butt weld at the ends of the reinforcing bars; the traction straightening device 3 is located after the butt weld head detection device. Downstream of 2, a traction straightening device 3 is configured to traction and straighten the reinforcing bars; a counting device 4 is located downstream of the traction straightening device 3 and is configured to record the length of the reinforcing bars; a flying shear device 5 is located downstream of the counting device 4 and is configured to cut the reinforcing bars; a double-sided unloading device 6 is located downstream of the flying shear device 5 and is configured to separate reinforcing bars containing butt welds from reinforcing bars without butt welds; and a bundling device 7 is located downstream of the double-sided unloading device 6 and is configured to bundle the reinforcing bars without butt welds.

[0022] The fully automated composite production line for straightening steel bars described above can weld two steel bars together using the steel bar welding device 1, thereby achieving uninterrupted feeding for straightening. Since the performance of the weld head formed by the two steel bars is different from that of the steel bar itself, the position of the weld head can be identified by the weld head detection device 2. Combined with the length recorded by the counting device 4, the steel bar is cut by the flying shear device 5. The double-sided unloading device 6 can distinguish between steel bars with and without weld heads. Then, the steel bars without weld heads are bundled by the bundling device 7, achieving continuous production and improving production efficiency.

[0023] like Figure 1As shown, the fully automated composite production line for straightening rebar also includes an automatic feeding trolley 8. The automatic feeding trolley 8 can adopt a commonly used feeding moving device in the prior art. The automatic feeding trolley 8 can be used in conjunction with existing wire rod turning machines and vertical wire feeding frames to feed materials to the rebar welding device 1. The wire rod turning mechanism and vertical wire feeding frame are also commonly used structures in the prior art. The two wire rod turning machines alternately supply wire rod raw materials to the vertical wire feeding frame. When one of the wire rod turning machines runs out of rebar, it rotates to a horizontal position, the automatic pushing trolley moves, pushing the wire rod to the wire rod turning machine, the automatic feeding trolley 8 retracts, the wire rod turning machine becomes vertical, and then the two coils of rebar are welded end-to-end by the rebar welding device 1. It should also be noted that the structure of the rebar welding device 1 is not specifically limited and can be any commonly used device for welding rebar in the prior art.

[0024] After the two steel bars are welded, they enter the weld joint detection device 2 to detect the position of the weld joint. Figures 2 to 4 As shown, in some embodiments, the welding head detection device 2 includes a conductive component, a power supply 23, and a monitoring component. The conductive component includes a first conductive element 21 and a second conductive element 22, which are spaced apart along the conveying direction of the reinforcing bar. The first conductive element 21 and the second conductive element 22 can contact the reinforcing bar, and both the first conductive element 21 and the second conductive element 22 are conductors. The first conductive element 21 and the second conductive element 22 are insulated from each other. The positive terminal of the power supply 23 is connected to one of the first conductive element 21 and the second conductive element 22, and the negative terminal of the power supply 23 is connected to the other of the first conductive element 21 and the second conductive element 22. The monitoring component (not shown in the figure) is connected in the circuit where the conductive component and the power supply 23 are connected to identify whether the circuit is conductive.

[0025] After the reinforcing bars are welded by the reinforcing bar welding device 1, an insulating ring 28 can be wrapped or fitted around the weld joint of the reinforcing bar. When the reinforcing bars with weld joints are conveyed on the first conductive element 21 and the second conductive element 22, since the first conductive element 21 and the second conductive element 22 are both conductors, the power supply 23, the reinforcing bars, the first conductive element 21 and the second conductive element 22 can form a complete circuit. However, when the insulating ring 28 contacts the first conductive element 21 or the second conductive element 22, the reinforcing bars are isolated from the first conductive element 21 or the second conductive element 22 by the insulating ring 28, and a circuit cannot be formed. This allows the reinforcing bars to be positioned at the first conductive element 21 or the second conductive element 22 where the weld joint is formed. The above positioning is not affected by the environment, making the position of the weld joint more accurate.

[0026] In some embodiments, the monitoring device can be a PLC. The PLC can be connected to the first conductive element 21 and / or the second conductive element 22 via a resistor (the specific connection method is a basic common sense of circuits in the prior art and will not be described in detail). This allows the PLC to pinpoint the location of the welding head by identifying which part of the first conductive element 21 or the second conductive element 22 has not formed a circuit. In the current embodiment, the second conductive element 22 is located upstream of the first conductive element 21, and the PLC is connected to the first conductive element 21. This allows the PLC to determine whether the welding head is located at the first conductive element 21 by checking whether the insulating ring 28 passes through the first conductive element 21.

[0027] In some embodiments, to facilitate the installation of the second conductive element 22 and the first conductive element 21, the welding head detection device 2 further includes a frame 25, on which the first conductive element 21 and / or the second conductive element 22 are disposed and insulated from the frame 25. In the current embodiment, the first conductive element 21 is disposed on the frame 25, while the second conductive element 22 can be any component used for guiding or supporting contact in the preceding process, as long as it is properly insulated; for example, a welding mechanism, a wire rod turning machine, or a vertical wire feeding frame. Exemplarily, the voltage of the power supply 23 is 5V-36V, thereby ensuring that the operator is not affected by voltage during operation. Of course, the second conductive element 22 can also be disposed in a subsequent process of the welding head detection device 2, such as on the traction straightening device 3 or the counting device 4, as long as it can contact the reinforcing bar to form a passage.

[0028] In some embodiments, to improve detection accuracy, multiple first conductive elements 21 are provided on the frame 25. These multiple first conductive elements 21 are spaced apart along the horizontal direction of the frame 25 and staggered along the vertical direction of the frame 25, so that the reinforcing bar is positioned between two adjacent first conductive elements 21. For example, two first conductive elements 21 are provided. The staggered distribution of the two first conductive elements 21 improves the contact efficiency between the reinforcing bar and the first conductive element 21 when the reinforcing bar is not in a straight position, ensuring that at least one of the first conductive elements 21 is in contact, thereby improving the accuracy of detection and positioning.

[0029] In some embodiments, the conductive component further includes an insulating plate 26, which is fixed to the frame 25. The first conductive element 21 is disposed on the insulating plate 26, thereby insulating the first conductive element 21 from the frame 25. Exemplarily, the first conductive element 21 includes a wheel seat 211 and a wheel body 212. The wheel seat 211 is disposed on the insulating plate 26, and the wheel body 212 rotates on the wheel seat 211. A power supply 23 is connected to the wheel seat 211 via a wire 24. Both the wheel seat 211 and the wheel body 212 are conductive, allowing current to be conducted to the wheel body 212 through the wheel seat 211. This reduces the direct connection of the wire 24 to the wheel body 212, preventing the wire 24 from interfering with the rotation of the wheel body 212. The wheel body 212 can be connected to the wheel seat 211 via a bearing. The wheel body 212 can be, but is not limited to, a V-shaped wheel or a U-shaped wheel, further enhancing the wheel body 212's ability to limit the movement of the reinforcing bar and reducing the possibility of the reinforcing bar detaching from the wheel body 212.

[0030] In some embodiments, to facilitate fixing the insulating plate 26, the frame 25 is provided with screw holes, and the insulating plate 26 and the wheel seat 211 are provided with through holes. Bolts are screwed into the screw holes through the through holes, thereby fixing the insulating plate 26 between the frame 25 and the wheel seat 211. To prevent the bolt from conducting current to the frame 25, an insulating sleeve 27 is also provided on the bolt. The insulating sleeve 27 includes an insulating sheet 272 and an insulating sleeve 27 ring. The insulating sheet 272 is connected to one end of the insulating sleeve 27 ring, and the insulating sleeve 27 ring is fitted onto the bolt post. The insulating sheet 272 is clamped between the wheel seat 211 and the bolt head, thereby insulating the bolt from the wheel seat 211.

[0031] Because of the presence of the insulating sleeve 27, the wire 24 can be clamped between the insulating sheet 272 and the wheel seat 211, which facilitates the fixing of the wire 24, and the removable insulating sleeve 27 facilitates later maintenance.

[0032] Of course, in other alternative embodiments, the wire 24 may also be connected to the first conductive element 21 by other means such as winding or welding.

[0033] In some embodiments, the second conductive element 22 may, but is not limited to, employ the same mechanism as the first conductive element 21, and the specific details will not be elaborated further.

[0034] like Figures 5 to 10As shown, in some embodiments, the traction straightening device 3 includes a housing 31 and a first straightening mechanism 32 and a second straightening mechanism 33 disposed on the housing 31; wherein, the first straightening mechanism 32 includes a first manual clamping assembly 321, a first electric clamping assembly 322 and three first rollers 323 sequentially distributed along the rebar conveying direction, and the sliding end of the first manual clamping assembly 321 is provided with a first manual pressure roller 3211 located above the two upstream first rollers 323, so that the first manual pressure roller 3211 and the two upstream first rollers 323 are aligned. The first rollers 323 form a triangular structure, and the first manual pressing assembly 321 can drive the first manual pressure roller 3211 to move toward the first rollers 323 to press the reinforcing bar. The sliding end of the first electric pressing assembly 322 is provided with a first electric pressure roller 3221 located above the two downstream first rollers 323, so that the first electric pressure roller 3221 and the two downstream first rollers 323 form a triangular structure, and the first electric pressing assembly 322 can drive the first electric pressure roller 3221 to move toward the first rollers 323 to press the reinforcing bar. As a preferred embodiment, the first manual pressure roller 3211 is located directly above the two upstream first rollers 323, and the first electric pressure roller 3221 is located directly above the two downstream first rollers 323. It is understandable that the first manual pressing component 321 in the first straightening mechanism 32 can be provided in two, three or more sets, and the first electric pressing component 322 can also be provided in two, three or more sets. Taking the first electric pressing component 322 being provided in two sets and the first manual pressing component 321 being provided in one set as an example, there are four first rollers 323. The first manual pressing roller 3211 is located above the two upstream first rollers 323, one first electric pressing roller 3221 is located above the two middle first rollers 323, and another first electric pressing roller 3221 is located above the two downstream first rollers 323.

[0035] The second straightening mechanism 33 includes multiple sets of pneumatic clamping components 331 arranged sequentially along the direction of rebar conveying and second rollers 332 corresponding to each set of pneumatic clamping components 331. Each set of pneumatic clamping components 331 has a pneumatic pressure roller 3311 located above the corresponding second roller 332 at its sliding end. The pneumatic clamping component 331 can drive the cylinder 3312 to move the pressure roller toward the second roller 332 to clamp the rebar.

[0036] The traction straightening device 3 uses multiple methods—the first manual clamping component 321, the first electric clamping component 322, and the pneumatic clamping component 331—to clamp the reinforcing bars, enabling straightening of the bars during transport with high consistency. Furthermore, the first electric clamping component 322 allows for memorizing the straightness of the reinforcing bars and one-button straightening, making the straightening operation more convenient. The overall structure is simple and easy to disassemble and maintain.

[0037] Specifically, the first manual clamping assembly 321 includes a manual nut seat 3212, a manual screw 3213, and a manual slider 3214. The manual nut seat 3212 is fixedly mounted on the first upper cover 311 of the housing 31; the manual slider 3214 is slidably connected to the housing 31, and the first manual pressure roller 3211 is connected to the manual slider 3214, so that when the manual slider 3214 moves up and down reciprocally, it can drive the first manual pressure roller 3211 to approach or move away from the first roller 323, so as to clamp or loosen the steel bar; the manual screw 3213 is screwed to the manual nut seat 3212. When the manual screw 3213 is manually rotated, the manual screw 3213 can move toward the manual slider 3214 and push the manual slider 3214 to drive the first manual pressure roller 3211 toward the first roller 323, so as to clamp and straighten the steel bar with the first manual pressure roller 3211. In this embodiment, a first thrust ball bearing 3216 is provided at the end of the manual screw 3213 facing the manual slider 3214. By pressing the manual slider 3214 with the first thrust ball bearing 3216, the rotational friction can be reduced, and wear between the manual screw 3213 and the manual slider 3214 can be avoided.

[0038] Furthermore, to enable the manual slider 3214 to reset, the first manual clamping assembly 321 also includes a first compression spring 3215 disposed between the end of the manual slider 3214 facing away from the manual screw 3213 and the housing 31. When the manual screw 3213 is rotated to push the manual slider 3214 downward, causing the first manual pressure roller 3211 to move toward the first roller 323, the manual slider 3214 compresses the first compression spring 3215 to store energy; when the manual screw 3213 is rotated in the opposite direction, the manual screw 3213 moves upward, and the first compression spring 3215 releases its elastic potential energy to reset the manual slider 3214.

[0039] Specifically, the first electric clamping assembly 322 includes a first motor reducer 3222, an electric nut seat 3223, a first electric screw 3224, and an electric slider 3225. An electric nut seat 3223 is mounted on the first upper cover 311 of the housing 31; an electric slider 3225 is slidably connected to the housing 31, and a first electric pressure roller 3221 is connected to the electric slider 3225, so that when the electric slider 3225 moves up and down, it can drive the first electric pressure roller 3221 to move closer to or away from the first roller 323, so as to tighten or loosen the steel bar; a first electric screw 3224 is screwed to the electric nut seat 3223 and simultaneously keyed to the output hole of the first motor reducer 3222. When the first motor reducer 3222 drives the first electric screw 3224 to rotate, the first electric screw 3224 can move axially along the output hole and push the electric slider 3225 to drive the first electric pressure roller 3221 toward the first roller 323, so as to achieve the first electric pressure roller 3221 to tighten and straighten the steel bar. In this embodiment, a second thrust ball bearing 3227 is provided at the end of the first electric screw 3224 facing the electric slider 3225. By pressing the electric slider 3225 with the second thrust ball bearing 3227, the rotational friction can be reduced, and wear between the first electric screw 3224 and the electric slider 3225 can be avoided.

[0040] Furthermore, to enable the electric slider 3225 to reset, the first electric clamping assembly 322 also includes a second compression spring 3226 disposed between the end of the electric slider 3225 away from the first electric screw 3224 and the housing 31. When the first motor reducer 3222 drives the first electric screw 3224 to rotate, causing the first electric screw 3224 to push the electric slider 3225 downward and move the first electric pressure roller 3221 toward the first roller 323, the electric slider 3225 compresses the second compression spring 3226 to store energy; when the first electric screw 3224 is driven to rotate in the opposite direction, the first electric screw 3224 moves upward, and the second compression spring 3226 releases its elastic potential energy to reset the electric slider 3225.

[0041] Specifically, the pneumatic clamping assembly 331 includes a cylinder 3312 and a pneumatic slider 3313. The cylinder 3312 is mounted on the first upper cover 311 of the housing 31; the pneumatic slider 3313 is slidably connected to the housing 31, and the pneumatic pressure roller 3311 is connected to the pneumatic slider 3313, so that the pneumatic slider 3313 can simultaneously move the pneumatic pressure roller 3311 when it moves up and down; the end of the output rod of the cylinder 3312 is connected to the pneumatic slider 3313, so that the output rod of the cylinder 3312 can simultaneously move the pneumatic slider 3313 up and down when it extends or retracts. When the cylinder 3312 drives the pneumatic slider 3313 to move the pneumatic pressure roller 3311 towards the second roller 332, the pneumatic pressure roller 3311 can clamp and straighten the reinforcing bar. In this embodiment, the pneumatic clamping assembly 331 is provided with six sets.

[0042] In this embodiment, a floating connector is provided at the output end of the cylinder 3312, and a connector connecting seat is installed on the side of the pneumatic slider 3313 facing the cylinder 3312. The floating connector is connected to the connector connecting seat so that the output rod of the cylinder 3312 drives the pneumatic slider 3313 to move up and down.

[0043] Optionally, the traction straightening device 3 further includes a third straightening mechanism 34 disposed in the housing 31 and located downstream of the second straightening mechanism 33. The third straightening mechanism 34 includes a second electric clamping assembly 341, a lowering assembly 342, and a second manual clamping assembly 343 arranged sequentially along the rebar conveying direction. The sliding end of the second electric clamping assembly 341 is provided with a second electric pressure roller 3411, the sliding end of the lowering assembly 342 is provided with a plurality of lowering rollers 3421 arranged sequentially along the rebar conveying direction, and the sliding end of the second manual clamping assembly 343 is provided with a second manual clamping assembly 343. The third straightening mechanism 34 also includes a moving pressure roller 3431; the second electric pressure roller 3411, the lower pressure roller 3421, and the second manual pressure roller 3431 are located above the third rollers 344 and are staggered with them; the second manual pressing assembly 343, the lower pressing assembly 342, and the second manual pressing assembly 343 can respectively drive the second electric pressure roller 3411, the lower pressure roller 3421, and the second manual pressure roller 3431 to move toward the third rollers 344 to press the reinforcing bar, which further improves the stability of reinforcing bar straightening. In this embodiment, two sets of the second manual pressing assembly 343 are provided.

[0044] Optionally, the pressing assembly 342 includes a pressing drive component and a sliding mounting body 3422. The sliding mounting body 3422 is slidably connected to the housing 31. The pressing rollers 3421 are distributed at intervals along the rebar conveying direction and connected to the sliding mounting body 3422. The pressing drive component can drive the sliding mounting body 3422 to move the pressing rollers 3421 toward the third roller 344 to clamp the rebar. This structure arranges multiple pressing rollers 3421 sequentially and installs them on the sliding mounting body 3422, so that when the pressing drive component drives the sliding mounting body 3422 to press down, it can drive multiple pressing rollers 3421 to clamp the rebar with multiple corresponding third rollers 344 respectively, so that multiple pressing rollers 3421 and multiple third rollers 344 respectively form multiple sets of simultaneous pressing structures to improve the stability of rebar straightening.

[0045] In this embodiment, the clamping drive component includes two second motor reducers 3423, two second electric screws 3425, and two threaded sleeves 3424. The two threaded sleeves 3424 are fixedly mounted on the housing 31 at intervals along the direction of rebar conveying. The two second motor reducers 3423 are mounted on the housing 31. The two second electric screws 3425 are screwed to the two threaded sleeves 3424 respectively, and the two second electric screws 3425 are also keyed to the output holes of the two second motor reducers 3423 respectively. When the two second motor reducers 3423 simultaneously drive the two second electric screws 3425 to rotate, the two second electric screws 3425 can push the sliding mounting body 3422 downward. In this embodiment, a ring platform is provided in the middle of the second electric screw 3425, and a third thrust ball bearing 3426 is sleeved on the second electric screw 3425. The two ends of the third thrust ball bearing 3426 abut against the ring platform and the sliding mounting body 3422 respectively.

[0046] Furthermore, to enable the sliding mount 3422 to reset, the clamping drive component also includes a third compression spring 3427 disposed between the end of the sliding mount 3422 facing away from the second electric screw 3425 and the housing 31. When the sliding mount 3422 moves downward, driving the lower pressure roller 3421, the third compression spring 3427 is compressed and stores energy; when the second electric screw 3425 rotates and moves upward, the third compression spring 3427 releases its elastic potential energy to reset the sliding mount 3422.

[0047] In this embodiment, the second electric clamping assembly 341 and the first electric clamping assembly 322 have the same structure, which will not be described again here.

[0048] In this embodiment, the second manual clamping component 343 and the first manual clamping component 321 have the same structure. The manual nut seat 3212 of the second manual clamping component 343 is disposed on the second upper cover 312 on the housing 31. The rest of the structure will not be described here.

[0049] Optionally, the first roller 323 is rotatably mounted on the housing 31 via a first gear shaft, and the second roller 332 is rotatably mounted on the housing 31 via a second gear shaft. First steering gear shafts mesh between any adjacent first gear shafts, between any adjacent second gear shafts, and between adjacent first and second gear shafts. A first bearing is provided between each first roller 323 and its corresponding first gear shaft. To achieve the traction of the reinforcing bar, the traction straightening device 3 further includes a first traction mechanism 35. The output end of the first traction mechanism 35 is connected to the first gear shaft with the first bearing. The first traction mechanism 35 provides power for the movement of the reinforcing bar, and by connecting the output end of the first traction mechanism 35 to the first gear shaft with the first bearing, speed mismatches between the first roller 323 connected to the output end of the first traction mechanism 35 and the other first rollers 323 and second rollers 332 are avoided.

[0050] Furthermore, the third roller 344 is rotatably mounted on the housing 31 via a third gear shaft, and a second steering gear shaft meshes between any adjacent third gear shafts. A second bearing is provided between each third roller 344 and its corresponding third gear shaft. To make the movement of the reinforcing bar smoother, the traction straightening device 3 also includes a second traction mechanism 36. The output end of the second traction mechanism 36 is connected to the third gear shaft with the second bearing. The second traction mechanism 36 provides power to the reinforcing bar, and by connecting the output end of the second traction mechanism 36 to the third gear shaft with the second bearing, speed mismatch between the third roller 344 connected to the output end of the second traction mechanism 36 and the other third rollers 344 is avoided.

[0051] It is understood that, except for the first roller 323 and the first gear shaft which are provided with the first bearing, and except for the third roller 344 and the third gear shaft which are provided with the second bearing, the remaining first roller 323 and the first gear shaft, the second roller 332 and the second gear shaft, and the remaining third roller 344 and the third gear shaft are all fixedly connected.

[0052] In this embodiment, the first traction mechanism 35 includes a first traction motor 351, a first large pulley 352, and a first small pulley 353. The first small pulley 353 is disposed on the output shaft of the first traction motor 351. The first large pulley 352 is rotatably connected to the housing 31 and is driven by the first small pulley 353 via a first belt 354. The first large pulley 352 is connected to a first gear shaft equipped with a first bearing. The first traction motor 351 drives the first large pulley 352 to rotate, thereby realizing the rotation of the corresponding first gear shaft, and thus realizing the simultaneous rotation of the remaining first rollers 323 and second rollers 332.

[0053] In this embodiment, the second traction mechanism 36 includes a second traction motor 361, a second large pulley 362, and a second small pulley 363. The second small pulley 363 is disposed on the output shaft of the second traction motor 361. The second large pulley 362 is rotatably connected to the housing 31 and is driven by the second small pulley 363 via a second belt 364. The second large pulley 362 is connected to a third gear shaft equipped with a second bearing. The second traction motor 361 drives the second large pulley 362 to rotate, thereby rotating the corresponding third gear shaft, and consequently, rotating the remaining third rollers 344 simultaneously.

[0054] It is understandable that the outer circumferential surfaces of the first manual pressure roller 3211, the first electric pressure roller 3221, the pneumatic pressure roller 3311, the second manual pressure roller 3431, the second electric pressure roller 3411, the lower pressure roller 3421, the first roller 323, the second roller 332, and the third roller 344 are all provided with grooves for accommodating reinforcing bars.

[0055] The aforementioned traction device ensures the power of the reinforcing bar during operation and guarantees speed stability. After passing through the traction and straightening device 3, the reinforcing bar enters the counting device 4 to record its movement length. The recorded length provides feedback on the position of the weld head on the reinforcing bar. Subsequently, it enters the flying shear device 5 for cutting. In this embodiment, the counting device 4 can replace the existing encoder-driven counting device 4. During the movement of the reinforcing bar, the counting wheel of the counting device 4 presses against the reinforcing bar, causing the encoder to rotate passively, thereby accurately counting the length. The flying shear device 5 can, but is not limited to, the existing synchronous feeding flying shear device 5, to achieve continuous and uniform flying shearing of the reinforcing bar, ensuring stable and reliable production without affecting the surface and performance of the reinforcing bar, and providing good long-term shearing stability.

[0056] like Figure 1 As shown, in some embodiments, a passive straightening device 9 may also be provided between the counting device 4 and the flying shear device 5. The passive straightening device 9 adopts a roller straightening device with multiple sets of opposing straightening wheel groups, thereby clamping the steel bar with the straightening wheel groups and using multiple wheels to repeatedly bend the steel bar to further straighten it, so as to ensure that the steel bar is accurately straightened without damaging the surface of the steel bar.

[0057] like Figures 11 to 15As shown, in some embodiments, the double-sided unloading device 6 includes a frame body 61 and a material distribution assembly 62. The material distribution assembly 62 includes a material distribution frame 621, a first material distribution arm 622, a second material distribution arm 623, a first material distribution drive 624, and a second material distribution drive 625. The material distribution frame 621 is disposed on the frame body 61 and has a first guide surface 6211 and a second guide surface 6212 arranged at an angle. The first guide surface 6211 and the second guide surface 6212 are both inclined upward from the side that is far apart from each other to the side that is close to each other. The first material distribution arm 622 and the second material distribution arm 623 are respectively disposed above the first guide surface 6211 and the second guide surface 6212. The first material distribution drive 624 is used to drive the material distribution device 625. The first distributing arm 622 moves closer to or further away from the second distributing arm 623. The second distributing drive 625 drives the second distributing arm 623 to move closer to or further away from the first distributing arm 622. When the first distributing arm 622 moves toward the second distributing arm 623 or the second distributing arm 623 moves toward the first distributing arm 622, the first distributing arm 622 and the second distributing arm 623 can close together to form a receiving space for accommodating the reinforcing bars. When the first distributing arm 622 moves away from the second distributing arm 623, the reinforcing bars can fall from the receiving space onto the first guide surface 6211. When the second distributing arm 623 moves away from the first distributing arm 622, the reinforcing bars can fall from the receiving space onto the second guide surface 6212.

[0058] The aforementioned double-sided unloading device 6 has a first guide surface 6211 and a second guide surface 6212 on the sorting rack 621. By controlling the individual movement of the first sorting arm 622 and the second sorting arm 623, the reinforcing bars are selectively dropped onto the first guide surface 6211 or the second guide surface 6212. Then, under the action of gravity, the reinforcing bars roll off the first guide surface 6211 or the second guide surface 6212, realizing the sorting and screening function of reinforcing bars without butt welds and reinforcing bars with butt welds. In the current embodiment, when the reinforcing bar does not have a butt weld, the first sorting drive 624 drives the first sorting arm 622 to open the accommodating space, and the reinforcing bar falls onto the first guide surface 6211; when the reinforcing bar has a butt weld, the second sorting drive 625 drives the second sorting arm 623 to open the accommodating space, and the reinforcing bar falls onto the second guide surface 6212. To facilitate the storage of steel bars with weld heads, a storage rack is also provided on the side of the double-sided unloading device 6 near the second guide surface 6212, and the storage rack has a storage trough with the slot facing upward.

[0059] To achieve automatic opening and closing of the accommodating space, the PLC is communicatively connected to both the first material distribution drive 624 and the second material distribution drive 625. If the reinforcing bar does not have a welding head, the PLC sends a start signal to the first material distribution drive 624, which then drives the first material distribution arm 622 to move away from the second material distribution arm 623. If the reinforcing bar has a welding head, the PLC sends a start signal to the second material distribution drive 625, which then drives the second material distribution arm 623 to move away from the first material distribution arm 622.

[0060] Of course, the first material distribution drive 624 and the second material distribution drive 625 can also be driven manually.

[0061] In some embodiments, the longitudinal cross-sections of the first dividing arm 622 and the second dividing arm 623 are both L-shaped, and the accommodating space formed by the first dividing arm 622 and the second dividing arm 623 is rectangular. For example, both the first dividing arm 622 and the second dividing arm 623 are made of angle steel. The first guide surface 6211 and the second guide surface 6212 intersect at a connecting line. When the first dividing arm 622 and the second dividing arm 623 abut to form the accommodating space, both the first dividing arm 622 and the second dividing arm 623 are in contact with the connecting line to ensure that when the first dividing arm 622 moves away from the second dividing arm 623, the reinforcing bar can fall onto the first guide surface 6211, and when the second dividing arm 623 moves away from the first dividing arm 622, the reinforcing bar can fall onto the second guide surface 6212.

[0062] To improve the sealing of the accommodating space along its length, the material distribution assembly 62 further includes a first rotating arm 626 and a first swing arm 628. Multiple first rotating arms 626 are spaced apart from the first material distribution arm 622 along its length, and each first rotating arm 626 is rotatably connected to the frame body 61 via the same first rotating shaft. One end of the first swing arm 628 is connected to the first rotating shaft, and the other end is connected to the first material distribution drive member 624, so that the first rotating arm 626 is driven to rotate under the drive of the first material distribution drive member 624, thereby driving the first material distribution arm 622 to rotate. Similarly, the material distribution assembly 62 also includes a second rotating arm 627 and a second swing arm 629. Multiple second rotating arms 627 are spaced apart along the length of the second material distribution arm 623, and each second rotating arm 627 is rotatably connected to the frame body 61 via a second rotating shaft. One end of the second swing arm 629 is connected to the second rotating shaft, and the other end is connected to the second material distribution drive member 625, so that under the drive of the second material distribution drive member 625, the second rotating arm 627 rotates, thereby driving the second material distribution arm 623 to rotate. Both the first material distribution drive member 624 and the second material distribution drive member 625 can be either a pneumatic cylinder 3312 or a hydraulic cylinder.

[0063] It is understandable that the number of the first swing arms 628 is the same as the number of the first material distribution drive components 624, but the number of the first swing arms 628 is less than the number of the first rotating arms 626, so as to reduce the number of the first material distribution drive components 624 used. The number of the second swing arms 629 is the same as the number of the second material distribution drive components 625 but less than the number of the second rotating arms 627, thereby effectively reducing the manufacturing cost of the double-sided unloading device 6 while ensuring the enclosure of the accommodating space.

[0064] In some embodiments, the double-sided unloading device 6 further includes a screw feeding assembly 63. The downstream ends of both the first guide surface 6211 and the second guide surface 6212 are connected to the screw feeding assembly 63 to respectively convey reinforcing bars without butt welds and reinforcing bars with butt welds. Specifically, the screw feeding assembly 63 includes a conveying shaft 631, a conveying spring 632, and a conveying drive component 633. The conveying drive component 633 can be a geared motor used to drive the conveying shaft 631 to rotate. The conveying spring 632 is sleeved on the conveying shaft 631 and can rotate with the conveying shaft 631. After the reinforcing bar rolls off the first guide surface 6211 or the second guide surface 6212, it can fall between two adjacent turns of the conveying spring 632. At this time, the conveying drive component 633 is activated. When the conveying drive component 633 drives the conveying shaft 631 to rotate, the conveying spring 632 rotates accordingly, thereby transporting the reinforcing bar away from the first guide surface 6211 or the second guide surface 6212. Compared to dropping directly to the target placement position via the first guide surface 6211 or the second guide surface 6212, the unloading speed of the steel bars is controllable.

[0065] More specifically, multiple conveyor shafts 631 are spaced apart along the length of the first distribution arm 622 or the second distribution arm 623, and conveyor springs 632 are arranged in a one-to-one correspondence with the conveyor shafts 631. To reduce operating costs, the conveyor springs 632 in the two sets of screw feeding assemblies 63 used for conveying steel bars without butt welds and steel bars with butt welds have opposite rotation directions, and the two conveyor shafts 631 in the two sets of screw feeding assemblies 63 that are on the same axis are connected to the same conveying drive component 633.

[0066] In other embodiments, the screw feeding assembly 63 includes a conveying screw and a conveying drive 633. The conveying drive 633 drives the conveying screw to rotate, and the conveying screw conveys the reinforcing bars through its own threads. Compared to the conveying screw, the conveying spring 632, in conjunction with the conveying shaft 631, conveys the reinforcing bars at a lower manufacturing cost and is easier to disassemble and maintain.

[0067] The double-sided unloading device 6 also includes a baffle plate 67. The spiral feeding assembly 63 is provided with baffle plates 67 on both sides that are arranged opposite each other along the length direction of the first material distribution arm 622. When the conveying shaft 631 conveys the steel bars, the conveying spring 632 can drive the steel bars to move simultaneously toward the target dropping position and along the length direction of the steel bars. When the steel bars abut against the baffle plate 67, automatic alignment is achieved.

[0068] Based on the arrangement of the spiral feeding assembly 63, in order to ensure that the reinforcing bar is perpendicular to the conveying shaft 631 when it falls onto the conveying shaft 631, the double-sided unloading device 6 also includes a baffle assembly 64. The baffle assembly 64 is located above the first guide surface 6211 and is arranged between the first material distribution arm 622 and the spiral feeding assembly 63. The baffle assembly 64 can abut against the first guide surface 6211, thereby restricting the reinforcing bar from continuing to fall along the first guide surface 6211 and adjusting the two ends of the reinforcing bar to the same height.

[0069] Specifically, the material-stopping assembly 64 includes a material-stopping drive 641 and a material-stopping arm 642. The material-stopping arm 642 is also made of angle steel. The material-stopping drive 641 drives the angle steel to abut against or disengage from the first guide surface 6211. The material-stopping drive 641 is also made of a cylinder 3312 or a hydraulic cylinder. When the material-stopping arm 642 abuts against the first guide surface 6211, the reinforcing bar abuts against the material-stopping arm 642, and the two ends of the reinforcing bar are at the same height. Then the material-stopping arm 642 disengages from the first guide surface 6211, and the reinforcing bar continues to roll down along the first guide surface 6211.

[0070] The double-sided unloading device 6 also includes a dropping plate 66. One end of the dropping plate 66 is connected to the unloading end of the first guide surface 6211, and the other end extends downward at an inclination away from the first guide surface 6211. The dropping plate 66 has a recessed hole, and the conveying shaft 631 is embedded in the recessed hole and protrudes from the dropping plate 66. After the reinforcing bar falls from the conveying shaft 631, it rolls down the dropping plate 66 to the target dropping position. Specifically, to reduce the processing difficulty, the end-cutting baffle 67 is integrally formed on the dropping plate 66.

[0071] In some embodiments, the double-sided unloading device 6 further includes a receiving assembly 65 disposed downstream of the screw feeding assembly 63. The receiving assembly 65 includes a receiving drive 651 and a receiving plate 652. The receiving plate 652 is rotatably connected to the frame body 61 and can extend or retract the dropping plate 66. The receiving drive 651 is connected to the receiving plate 652 to drive the receiving plate 652 to rotate, thereby causing the receiving plate 652 to retract into or extend out of the dropping plate 66.

[0072] When the receiving plate 652 extends out of the dropping plate 66, the reinforcing bars are restricted by the receiving plate 652. When the number of reinforcing bars reaches the set quantity, the receiving drive 651 drives the receiving plate 652 to retract, and the reinforcing bars fall in batches into the target dropping position.

[0073] In some embodiments, when the steel bars without weld heads are screened by the double-sided unloading device 6, they can smoothly enter the bundling device 7. The receiving assembly 65 that receives steel bars without weld heads is also provided with an inclined feeding device 10 on one side. The inclined feeding device 10 is prior art, and its specific structure will not be described in detail. It is used to transport steel bars without weld heads to the bundling device 7.

[0074] like Figures 16 to 19 As shown, in some embodiments, the rebar bundling device 7 includes a first bundling mechanism 73, a second bundling mechanism 74, a clamping mechanism 75, an alignment mechanism 72, and a roller conveyor 71. The roller conveyor 71 is used to transport multiple rebars that do not reach the butt weld joint to form a rebar bundle. The roller conveyor 71 is prior art and can be any conveying component used in existing rebar bundling machines that has the function of conveying rebars, which will not be elaborated here. The first bundling mechanism 73 and the second bundling mechanism 74 are arranged at intervals along the conveying direction of the roller conveyor 71. The alignment mechanism 72 is arranged upstream of the first bundling mechanism 73 and is used to push the ends of the rebars to align the rebars used to form the rebar bundle. At least the first bundling mechanism 73 has clamping mechanisms 75 arranged before and after it for clamping the rebar bundle.

[0075] The aforementioned rebar bundling device 7 utilizes the alignment mechanism 72 to push the ends of the rebars, which is more efficient than manual pushing. Furthermore, the clamping mechanism 75 can clamp the rebars before bundling. Then, the first bundling mechanism 73 performs the first bundling of the rebars before conveying them, increasing the friction between the rebars and ensuring that the rebars move at a consistent speed. The bundled rebars run on the roller conveyor 71 to the second bundling mechanism 74, where the clamping mechanism 75 clamps the rebar bundles again. The second bundling mechanism 74 performs the second bundling of the rebar bundles, completing the bundling process. The final bundled rebars exhibit high neatness and tightness.

[0076] In some embodiments, the alignment mechanism 72 is located at the upstream end of the roller conveyor 71 and includes an alignment drive and a pusher plate. The alignment drive is used to push the pusher plate to move along the conveying direction of the roller conveyor 71, thereby aligning the reinforcing bars. Exemplarily, the alignment drive is a hydraulic cylinder. To reduce the power required by the alignment drive, and thus reduce the manufacturing cost of the reinforcing bar bundling device 7, the reinforcing bar bundles can be fed into the roller conveyor 71 in batches, and the alignment mechanism 72 aligns the reinforcing bar bundles in batches.

[0077] Based on this, to avoid interference between the reinforcing bars and the impact of the alignment mechanism 72 on the feeding device 10 on the inclined surface, the first bundling mechanism 73 adopts a piercing bundling machine, which can be opened and closed from the side. The distance between the first bundling mechanism 73 and the second bundling mechanism 74 is greater than the length of the reinforcing bar. The reinforcing bar enters the first bundling mechanism 73 from the side for the first bundling before conveying, and then moves towards the second bundling mechanism 74 via the roller conveyor 71 for the remaining bundling. Taking a bundle of reinforcing bars containing 300 reinforcing bars as an example, it can be divided into 6 batches, with 50 reinforcing bars in each batch fed onto the roller conveyor 71, that is, the alignment mechanism 72 pushes 50 reinforcing bars at the same time.

[0078] The second binding mechanism 74 can be either a piercing binding machine or a ring binding machine. In the current embodiment, the second binding mechanism 74 uses a ring punching machine, and the reinforcing bar bundle is inserted into the ring binding machine along the length of the reinforcing bar. Both piercing punching machines and ring punching machines are existing technologies and will not be described in detail here.

[0079] In the current embodiment, the clamping mechanism 75 includes a first clamping arm 751, a second clamping arm 752, a clamping seat 753, a first clamping drive member 754, and a second clamping drive member 755. Both the first clamping arm 751 and the second clamping arm 752 are rotatably mounted on the clamping seat 753. The first clamping drive member 754 is connected to the first clamping arm 751 and drives the first clamping arm 751 to rotate. The second clamping drive member 755 is connected to the second clamping arm 752 and drives the second clamping arm 752 to rotate. Both the first clamping arm 751 and the second clamping arm 752 are semi-circular and symmetrically arranged. The first clamping drive member 754 and the second clamping drive member 755 can be hydraulic cylinders or pneumatic cylinders 3312.

[0080] Specifically, in order to improve the clamping ability, at least two clamping mechanisms 75 are provided at the front and rear of both the first binding mechanism 73 and the second binding mechanism 74.

[0081] In other embodiments, the clamping mechanism 75 also includes a first clamping arm 751, a second clamping arm 752, and a clamping seat 753. The clamping mechanism 75 also includes a clamping drive and a transmission assembly. The first clamping arm 751 and the second clamping arm 752 are still rotatably mounted on the clamping seat 753, and both the first clamping arm 751 and the second clamping arm 752 are configured as semi-circular, symmetrically arranged. The first clamping arm 751 is rotatably connected to the clamping seat 753 via a first rotating shaft, and the second clamping arm 752 is rotatably connected to the clamping seat 753 via a second rotating shaft. The clamping drive is connected to the first clamping arm 751 and the second clamping arm 752 via the transmission assembly to drive the first clamping arm 751 and the second clamping arm 752 to move synchronously towards or away from each other.

[0082] For example, the transmission assembly includes a first transmission gear and a second transmission gear, the first transmission gear and the second transmission gear meshing, and the first transmission gear is sleeved on a first rotating shaft, and the second transmission gear is sleeved on a second rotating shaft.

[0083] In some embodiments, to facilitate the collection of bundled rebar bundles, a weighing platform 30 and a storage platform 40 are also provided downstream of the bundling device 7. The bundled rebar is conveyed to the end of the roller conveyor 71, and then the bundled rebar can be moved to the weighing platform 30 for weighing and marking, and then moved to the storage platform 40. In the current embodiment, the weighing platform 30 and the storage platform 40 are commonly used devices for weighing and storing rebar bundles in the prior art. Exemplarily, the transfer of rebar can also be carried out using, but is not limited to, a lifting device or a conveyor platform 20 that is raised on one or both sides.

[0084] It should be noted that, in order to further improve production efficiency, the two fully automated composite production lines for straightening steel bars can be connected using the double-sided conveyor platform 20, so that the steel bar bundles produced by the two fully automated composite production lines for straightening steel bars can be weighed and stored in a unified manner.

[0085] like Figure 20 As shown, this application also provides a production method based on the fully automated composite production line for straightening steel bars as described above, which includes the following steps: The coiled steel bars are placed on the automatic feeding trolley 8 by an overhead crane or forklift, and two coiled steel bar turning machines alternately supply the coiled steel bars to the vertical wire feeding frame; Two steel bar ends are pulled out of the steel bar coil bundle and butt-welded to the tail end of another coiled steel bar being produced using a steel bar butt welding machine; After welding, an insulating ring 28 is wrapped around the outside of the weld joint of the two steel bars. The insulating ring 28 can be, but is not limited to, a sleeve of insulating ring 28 or directly wrapped with insulating tape. The reinforcing bars pass sequentially through the second conductive element 22 and the first conductive element 21; during this process, the power supply 23 needs to be kept energized. In this embodiment, the PLC is connected to the first conductive element 21. When the monitoring device detects that the circuit is broken, it indicates that the insulating ring 28 is located at the first conductive element 21, which means that the welding head is located at the first conductive element 21; thus, the position of the welding head can be identified online. The reinforcing bar continues to advance to the traction straightening device 3 to straighten it, and the length of the reinforcing bar is recorded by the counting device 4; Flying shear device 5 cuts steel bars; The double-sided unloading device 6 separates the steel bars containing butt welds and the steel bars without butt welds to the first guide surface 6211 and the second guide surface 6212, and screens them; Rebars without weld joints are conveyed to bundling device 7 via inclined loading device 10. Bundling device 7 bundles rebars without weld joints. The bundled steel bars are then weighed and marked on the weighing platform 30 before being moved to the storage platform 40.

[0086] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A full-automatic combined production line for straightening reinforcing bars, characterized in that, include: A rebar butt welding device (1) is configured to butt weld two coils of rebar end to end; A butt weld head detection device (2) is located downstream of the butt weld device (1) for reinforcing bars. The butt weld head detection device (2) is configured to detect the position of the butt weld head of the butt weld at the beginning and end of the reinforcing bars. A traction straightening device (3) is disposed downstream of the butt weld head detection device (2), and the traction straightening device (3) is configured to traction and straighten the reinforcing bar; A counting device (4) is disposed downstream of the traction straightening device (3), and the counting device (4) is configured to record the length of the reinforcing bar; A flying shear device (5) is disposed downstream of the counting device (4), and the flying shear device (5) is configured to cut the reinforcing bar; A double-sided unloading device (6) is disposed downstream of the flying shear device (5), and the double-sided unloading device (6) is configured to separate the steel bar containing the butt joint and the steel bar not containing the butt joint; A bundling device (7) is located downstream of the double-sided unloading device (6), and the bundling device (7) is configured to bundle the reinforcing bars that do not contain the butt weld heads.

2. The full-automatic combined production line for reinforcing bar straightening according to claim 1, characterized in that, The welding head inspection device (2) includes: A conductive component, comprising a first conductive element (21) and a second conductive element (22), wherein the first conductive element (21) and the second conductive element (22) are spaced apart along the conveying direction of the reinforcing bar, and the first conductive element (21) and the second conductive element (22) are capable of contacting the reinforcing bar, and both the first conductive element (21) and the second conductive element (22) are conductors; the first conductive element (21) and the second conductive element (22) are insulated from each other; A power source (23) is provided, the positive terminal of which is connected to one of the first conductive element (21) and the second conductive element (22), and the negative terminal of which is connected to the other of the first conductive element (21) and the second conductive element (22). A monitoring device is connected to the circuit in which the conductive component is connected to the power supply (23) to identify whether the circuit is conducting.

3. The full-automatic combined production line for reinforcing bar straightening according to claim 2, characterized in that, The welding head detection device (2) further includes a frame (25), a plurality of first conductive elements (21) are distributed at intervals along the horizontal direction of the frame (25) and are staggered on the frame (25) along the height direction of the frame (25). The first conductive elements (21) are insulated from the frame (25) so that the reinforcing bar can be clamped between the first conductive elements (21).

4. The full-automatic combined production line for reinforcing bar straightening according to claim 1, characterized in that, The traction straightening device (3) includes a housing (31) and a first straightening mechanism (32) and a second straightening mechanism (33) disposed on the housing (31); The first straightening mechanism (32) includes at least one set of first manual clamping components (321), at least one set of first electric clamping components (322), and at least three first rollers (323). The sliding end of the first manual clamping component (321) is provided with a first manual pressure roller (3211), and the sliding end of the first electric clamping component (322) is provided with a first electric pressure roller (3221). The first manual pressure roller (3211) and the first electric pressure roller (3221) are located above the first roller (323) and are staggered from the first roller (323). The first manual clamping component (321) and the first electric clamping component (322) can respectively drive the first manual pressure roller (3211) and the first electric pressure roller (3221) to move toward the first roller (323) to clamp the steel bar. The second straightening mechanism (33) includes multiple sets of pneumatic clamping assemblies (331) arranged sequentially along the direction of the steel bar conveying and multiple second rollers (332) corresponding one-to-one with the multiple sets of pneumatic clamping assemblies (331). Each set of pneumatic clamping assemblies (331) has a pneumatic pressure roller (3311) located above the corresponding second roller (332) at its sliding end. The pneumatic clamping assembly (331) can drive the pneumatic pressure roller (3311) to move toward the second roller (332) to clamp the steel bar.

5. The fully automated composite production line for straightening reinforcing bars according to claim 4, characterized in that, The traction straightening device (3) further includes a third straightening mechanism (34) disposed in the housing (31) and located downstream of the second straightening mechanism (33). The third straightening mechanism (34) includes a second electric clamping assembly (341), a lowering assembly (342), and a second manual clamping assembly (343) arranged sequentially along the direction of rebar conveying. The sliding end of the second electric clamping assembly (341) is provided with a second electric pressure roller (3411). The sliding end of the lowering assembly (342) is provided with a plurality of lowering rollers (3421) arranged sequentially along the direction of rebar conveying. The sliding end of the second manual clamping assembly (343) is provided with a second manual pressure roller (3431). The third straightening mechanism (34) further includes a plurality of third rollers (344), wherein the second electric pressure roller (3411), the lower pressure roller (3421) and the second manual pressure roller (3431) are located above the third rollers (344) and are staggered from the third rollers (344); The second manual clamping assembly (343), the lowering assembly (342), and the second manual clamping assembly (343) can respectively drive the second electric pressure roller (3411), the lowering roller (3421), and the second manual pressure roller (3431) to move toward the third roller (344) to clamp the reinforcing bar.

6. The fully automated composite production line for straightening reinforcing bars according to claim 1, characterized in that, The double-sided unloading device (6) includes: Frame body (61); The material dispensing assembly (62) includes a material dispensing frame (621), a first material dispensing arm (622), a second material dispensing arm (623), a first material dispensing drive (624), and a second material dispensing drive (625). The material dispensing frame (621) is mounted on the frame body (61). The material dispensing frame (621) has a first guide surface (6211) and a second guide surface (6212) arranged at an angle. Both the first guide surface (6211) and the second guide surface (6212) are inclined upward from the side that is far apart from each other to the side that is close to each other. The first material dispensing arm (622) and the second material dispensing arm (623) are respectively disposed above the first guide surface (6211) and the second guide surface (6212). The first material distribution drive (624) is used to drive the first material distribution arm (622) to move closer to or away from the second material distribution arm (623). The second material distribution drive (625) is used to drive the second material distribution arm (623) to move closer to or away from the first material distribution arm (622). The first material distribution arm (622) and the second material distribution arm (623) can surround and form a receiving space. When the first material distribution arm (622) moves away from the second material distribution arm (623), the steel bar falls from the receiving space to the first guide surface (6211). When the second material distribution arm (623) moves away from the first material distribution arm (622), the steel bar falls from the receiving space to the second guide surface (6212).

7. The fully automated composite production line for straightening reinforcing bars according to claim 6, characterized in that, The material distribution assembly (62) further includes a first rotating arm (626), a first swing arm (628), a second rotating arm (627), and a second swing arm (629). The first rotating arm (626) is rotatably connected to the frame body (61) via a first rotating shaft. One end of the first swing arm (628) is connected to the first rotating shaft, and the other end is connected to the first material distribution drive (624). The second rotating arm (627) is rotatably connected to the frame body (61) via a second rotating shaft. One end of the second swing arm (629) is connected to the second rotating shaft, and the other end is connected to the second material distribution drive (625).

8. The fully automated composite production line for straightening reinforcing bars according to claim 6, characterized in that, The double-sided unloading device (6) further includes two sets of spiral feeding assemblies (63), one set of which is connected to the downstream end of the first guide surface (6211), and the other set is connected to the downstream end of the second guide surface (6212). The spiral feeding assembly (63) includes a conveying shaft (631), a conveying spring (632), and a conveying drive (633). The conveying drive (633) is used to drive the conveying shaft (631) to rotate. The conveying spring (632) is sleeved on the conveying shaft (631) and can rotate with the conveying shaft (631). The conveying springs (632) in the two sets of spiral feeding assemblies (63) have opposite directions of rotation, and the two conveying shafts (631) on the same axis are connected to the same conveying drive (633).

9. The fully automated composite production line for straightening reinforcing bars according to claim 1, characterized in that, The bundling device (7) includes: Roller conveyor (71) for conveying the steel bars formed into bundles; A first binding mechanism (73) and a second binding mechanism (74) are provided at intervals along the conveying direction of the roller conveyor (71); An alignment mechanism (72) is disposed upstream of the first binding mechanism (73), the alignment mechanism (72) being used to push the end of the reinforcing bar; A clamping mechanism (75) is used to clamp the bundle of reinforcing bars; In the first binding mechanism (73) and the second binding mechanism (74), at least the first binding mechanism (73) is provided with the clamping mechanism (75) at both the front and rear.

10. The fully automated composite production line for straightening reinforcing bars according to claim 9, characterized in that, The clamping mechanism (75) includes a first clamping arm (751), a second clamping arm (752), a clamping seat (753), a first clamping drive (754), and a second clamping drive (755). The first clamping arm (751) and the second clamping arm (752) are rotatably mounted on the clamping seat (753). The first clamping drive (754) is connected to the first clamping arm (751) and is used to drive the first clamping arm (751) to rotate. The second clamping drive (755) is connected to the second clamping arm (752) and is used to drive the second clamping arm (752) to rotate.

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