Precise positioning and clamping device for steel reinforcement prefabricated parts

Abstract

The application provides a steel bar prefabricated part precision positioning and clamping device, and relates to the technical field of positioning and clamping. The base plate is equipped with a conveying part for conveying the steel bar. The base plate is equipped with a cutting part, a first trigger part and a second trigger part. When the conveying part conveys the steel bar to a certain distance, the second trigger part is triggered. When the second trigger part is triggered, the first trigger part is driven to rotate. The conveying part is equipped with a second driving part for extruding the rotated first trigger part to trigger the cutting part to cut the steel bar. The base plate is equipped with a clamping device for clamping the steel bar when the cutting part cuts the steel bar. By adjusting the fixed position of the sliding block in the sliding groove and inserting and fixing the pin rod and the different limiting holes on the sliding plate, the fixed-length triggering distance of the steel bar can be quickly changed without disassembling and replacing any equipment parts, the processing requirements of different length specifications of steel bar prefabricated parts are met, and the equipment change efficiency and the universal performance are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of positioning and clamping technology, and in particular to a precision positioning and clamping device for precast steel bars. Background Technology

[0002] In the field of prefabricated building construction, steel precast components are the core components of the main building structure. The fixed-length cutting of steel bars is the first key process in the production of steel precast components. The accuracy of the cutting length, the quality of the cross-section forming, and the processing efficiency directly determine the subsequent binding and forming accuracy of steel precast components, and even the final assembly quality and structural safety of the main building.

[0003] Automatic conveying and cutting steel bar processing equipment still has technical defects in practical applications: the fixed length limiting structure is mostly a fixed design, and the limiting component needs to be disassembled and replaced when adjusting the cutting length of the steel bar, which is cumbersome and has low production change efficiency. Moreover, the adjustable length range is limited, making it difficult to adapt to the processing needs of various specifications of precast steel bars. The conveying, clamping and cutting mechanisms are mostly controlled by independent drive units, and the synchronization of the actions of each mechanism is difficult to guarantee, which easily leads to deviations in the timing of actions, causing problems such as delayed or premature clamping that hinders the conveying of steel bars. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a precision positioning and clamping device for precast steel reinforcement components.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a precision positioning and clamping device for precast steel bars, comprising a base plate, a conveying component mounted on the base plate for conveying the steel bars, a cutting component, a first trigger component, and a second trigger component mounted on the base plate, wherein the second trigger component is triggered when the conveying component conveys the steel bars to a certain distance, and the second trigger component drives the first trigger component to rotate when triggered, a second driving component mounted on the conveying component for pressing the rotated first trigger component to trigger the cutting component to cut the steel bars, a clamping device mounted on the base plate for clamping the steel bars to prevent them from jumping around when cut by the cutting component, and a first driving component mounted on the base plate for driving the clamping device to clamp the steel bars and for driving the conveying component to convey the steel bars.

[0006] The effects achieved by the above components are as follows: By synchronously driving the conveying component and clamping device through the first driving component, the linkage between the steel bar conveying and clamping actions is realized, ensuring synchronous clamping when the steel bar is cut, and fundamentally avoiding the safety hazard of steel bar jumping; through the step-by-step cooperation of the second trigger component, the first trigger component and the second driving component, the cutting action is automatically triggered after the steel bar is conveyed to the set length, which greatly improves the positioning accuracy of the fixed length cutting of the steel bar, and realizes the automated linkage of the entire process of conveying, clamping and cutting, simplifies the overall structure of the device and improves the processing efficiency of steel bar prefabrication.

[0007] Preferably, the conveying component is provided with an assembly plate, which is mounted on the base plate. A limiting groove is provided on the assembly plate for the nut block to slide. A threaded rod is rotatably connected in the limiting groove of the assembly plate. The threaded rod is threadedly connected to the nut block. Two transmission wheels that are close to each other are rotatably connected on the nut block and on the assembly plate via a rotating shaft. Limiting grooves are provided on the two transmission wheels for the reinforcing bar to move within one of the output wheels when it rotates.

[0008] The effects achieved by the above components are as follows: through the threaded transmission of the threaded rod and the nut block, the distance between the two transmission wheels can be flexibly adjusted to adapt to the conveying needs of steel bars of different diameters and specifications, significantly improving the versatility of the device; the limiting groove on the transmission wheel can limit and guide the steel bars throughout the entire process, avoiding lateral deviation during the conveying of steel bars, ensuring the straightness and accuracy of the conveying path, and providing a basic guarantee for the accuracy of subsequent steel bar length cutting.

[0009] Preferably, the first drive component is equipped with a first motor, which is mounted on the base plate by means of a mounting bracket. The output shaft of the first motor passes through the support plate on the base plate and extends to the outside of the support plate. The end of the output shaft of the first motor located outside the support plate is connected to a synchronous pulley by means of a coupling. Another synchronous pulley is connected to the rotating shaft of one of the transmission pulleys, and the two synchronous pulleys are connected by a synchronous belt drive.

[0010] The effects achieved by the above components are as follows: through the transmission structure of the No. 1 motor in conjunction with the synchronous pulley and synchronous belt, a stable and uniform conveying power is provided to the transmission wheel, ensuring the consistency of the steel bar conveying speed, and thus ensuring the uniformity of the steel bar cutting length during batch processing; at the same time, the use of a single motor to drive the conveying action simplifies the power system of the device, reduces the equipment failure rate and manufacturing cost, and the synchronous belt drive has the advantages of precise transmission ratio and shock absorption, further improving the stability of the conveying action.

[0011] Preferably, the clamping device includes a guide wheel, which is mounted on the output shaft of a first motor. The guide wheel has a guide groove for guiding the movement of the reinforcing bar. The output shaft of the first motor is fitted with connecting blocks on both sides of the guide wheel. A trigger wheel is connected to the connecting block by means of a vertical rod. A clamping component is installed on the guide wheel for clamping the reinforcing bar after being triggered by the trigger wheel.

[0012] The effects achieved by the above components are as follows: the guide wheel is directly mounted on the output shaft of motor No. 1, realizing the same driving source for clamping and conveying actions, ensuring complete synchronization between rebar conveying and clamping, and completely avoiding clamping failure caused by timing deviations; the guide groove on the guide wheel provides secondary guidance for the rebar, further improving the straightness of rebar conveying; at the same time, with the mechanical cooperation between the trigger wheel and the clamping component, automatic triggering clamping is achieved when the rebar is cut, eliminating the need for an additional independent clamping drive mechanism, further simplifying the device structure and reducing control difficulty.

[0013] Preferably, the clamping member includes protrusions, and protrusions are fixedly connected to both sides of the guide wheel on the guide groove. A trigger block is rotatably connected to the protrusion via a shaft. The trigger block is provided with an inclined surface for being squeezed when it rotates to the trigger wheel as the guide wheel rotates. A spring is connected between the two trigger blocks. A clamping plate is fixedly connected between the opposite sides of the two trigger blocks and on both sides of the guide groove. An anti-slip rubber pad is installed on the clamping plate. When the two trigger blocks rotate to the trigger wheel as the guide wheel rotates, the inclined surface of the trigger blocks is squeezed by the trigger wheel, causing the two trigger blocks to rotate and move closer to each other via the shaft. At this time, the spring is compressed, and the compression of the two trigger blocks causes the clamping plate to move closer to each other and clamp onto the outer surface of the rebar, so that the clamping block clamps the rebar tightly. At the same time, the anti-slip rubber pad helps to prevent slippage during clamping.

[0014] The aforementioned components achieve the following effects: by pressing the inclined surface of the trigger block with the trigger wheel, the rotation of the guide wheel is converted into the opposite rotation of the two trigger blocks, thereby realizing the automatic clamping of the steel bar by the clamping plate. The structure is ingeniously designed, and the clamping action responds quickly without delay. The spring setting can realize the automatic reset of the trigger block and the clamping plate after the clamping action is completed, ensuring the smooth continuous operation of the device. The anti-slip rubber pad on the clamping plate can greatly increase the friction between the steel bar and the steel bar, avoiding slippage and movement of the steel bar during clamping. At the same time, it can buffer the clamping force, prevent the surface of the steel bar from being damaged, ensure the processing quality of the precast steel bar components, and further improve the safety of the cutting operation.

[0015] Preferably, the second drive component includes a mounting bracket, the top of the assembly plate is mounted with the mounting bracket, the mounting bracket is equipped with an electric actuator, and the output rod of the electric actuator is connected to a pressing block.

[0016] The effects achieved by the above components are as follows: the mounting bracket provides stable installation support for the electric actuator, ensuring the verticality and stability of the output power of the electric actuator; the structure of the electric actuator in conjunction with the extrusion block can output stable linear extrusion force, accurately trigger the cutting action of the cutting component, with fast action response speed and high control precision, which can ensure the instantaneity of the cutting action, improve the flatness of the cut surface of the rebar, and avoid problems such as skewed cross-section and excessive burrs.

[0017] Preferably, the first triggering element includes a sleeve, a slide rod is slidably connected to the inner wall of the sleeve, a pad is fixedly connected to the outer surface of the slide rod, a first torsion spring is sleeved at the upper end of the slide rod and connected to the pad and the slide rod at both ends respectively, and a second spring is sleeved at the lower end of the slide rod and connected to the sleeve and the slide rod at both ends respectively.

[0018] The aforementioned components achieve the following effects: through the sliding cooperation between the sleeve and the slide rod, a stable guide is provided for the lifting and rotation of the pad, ensuring the straightness of the pad's movement under force and the accuracy of its rotation; the first torsion spring can drive the slide rod and the pad to rotate precisely under the trigger of the second trigger, realizing the positional correspondence between the pad and the extrusion block, completing the trigger preparation for the cutting action, and maintaining the initial position of the pad when not triggered to avoid accidental triggering; the second spring can drive the slide rod and the pad to automatically lift and reset after the cutting action is completed, working with the first torsion spring to realize the full-stroke reset of the pad, ensuring the cyclical nature of continuous operation of the device and improving the reliability of the device's operation.

[0019] Preferably, the second trigger includes an adjustment plate, which is mounted on a base plate. A slider is slidably connected to the adjustment plate, and a rotating plate is rotatably connected to the slider via a hinge rod. A second torsion spring is sleeved on the hinge rod, with its two ends respectively connected to the hinge rod and the rotating plate. A sliding plate is slidably connected to the adjustment plate, and a pin is inserted into the sliding plate. The end of the pin away from the sliding plate passes through the end of the rotating plate away from the slider and extends to the outside.

[0020] The effects achieved by the above components are as follows: the initial installation position of the rotating plate can be flexibly adjusted by sliding the slider on the adjusting plate, thereby adjusting the conveying length of the rotating plate triggered by the rebar, and realizing flexible adjustment of the rebar cutting length; the second torsion spring can drive the rotating plate to automatically rotate and reset after the rebar is disengaged from the trigger, ensuring the continuous operation capability of the device; the rotating plate and the sliding plate are detachably connected by the pin, which not only ensures that the rotating plate can stably drive the sliding plate to move horizontally when rotating, but also facilitates quick adjustment of the connection position between the rotating plate and the sliding plate, further expanding the adjustment range of the rebar cutting length and adapting to the processing needs of rebar precast components of different specifications.

[0021] Preferably, the adjusting plate has a groove for the slider to slide, and several adjusting holes are provided on one side of the inner wall of the groove, with bolts used to fix the slider's position within the groove. The adjusting plate also has a track groove for the sliding plate to slide. A trigger plate is mounted on the rotating plate, and a limit hole is provided on the sliding plate, with a pin passing through the rotating plate to fix the connection between the rotating plate and the sliding plate. When the reinforcing bar is conveyed by the transmission wheel, it moves forward along the bearing groove on the bearing block. When the reinforcing bar reaches the trigger plate, it presses against the trigger plate, causing the clamping plate to clamp the reinforcing bar. This causes the trigger plate to drive the rotating plate to rotate via the hinge rod. The other end of the rotating plate, via the pin, drives the sliding plate to slide within the track groove. The sliding plate then presses against the pad, causing the pad to rotate within the sleeve via the sliding rod. The first torsion spring is twisted, causing the pad to move below the pressing block, and the second spring is compressed. At this point, the electric actuator drives the extrusion block to descend and extrudes the pad block, causing the pad block to slide down within the sleeve via the slide rod. The pad block extrudes the cutting blade holder, causing the cutting blade on the cutting blade holder to slide within the column via the bearing rod. The No. 3 spring is compressed, and the cutting blade cuts the rebar on the bearing block. Because the clamping plate holds the rebar, the cut rebar will not be extruded out of the equipment by the subsequent rebar. The cut rebar can then be manually removed. At this point, the trigger plate is no longer compressed. Under the rebound force of the No. 2 spring, the No. 1 torsion spring, and the No. 3 spring, the pad block, trigger plate, and cutting blade holder all return to their original positions, waiting for the next extrusion of a fixed length of rebar. When the fixed length of the rebar needs to be changed, the pin is pulled out and the slider is released from its restriction in the groove. The slider is then slid to the appropriate adjustment hole, and then the slider is fixed. At the same time, the pin is reinserted into the new limiting hole. In this way, the length of the rebar extrusion trigger plate can be changed.

[0022] The aforementioned components achieve the following effects: Through the cooperation of the sliding groove and multiple sets of adjustment holes, the fixed position of the slider can be quickly adjusted, ensuring convenient operation and precise positioning, and enabling graded adjustment of the rebar cutting length; the track groove provides stable limiting guidance for the movement of the sliding plate, preventing deviation during movement and ensuring the accuracy of the triggering action; the trigger plate increases the contact area with the end of the rebar, ensuring stable triggering of the rotating plate and preventing trigger failure; through the cooperation of multiple adjustment structures, a wide range of flexible adjustment of the rebar cutting length can be achieved, adapting to the production of precast rebar components with different processing requirements. Simultaneously, the entire triggering, clamping, cutting, and resetting process is fully automated, significantly improving the efficiency and precision of rebar processing, while fundamentally eliminating the safety hazard of rebar jumping during cutting and enhancing the safety of the operation process.

[0023] Preferably, the cutting component includes an assembly block, on which a bearing block is mounted. The bearing block has a bearing groove for the rebar to slide. Columns are fixedly connected to both sides of the assembly block and the bearing block. Bearing rods are slidably connected inside the columns. The two bearing rods are connected to a cutting blade holder. A cutting blade is mounted on the cutting blade holder. A No. 3 spring is sleeved on the bearing rod, with its two ends connected to the columns and the cutting blade holder respectively. A guide groove is provided on the bearing block for the sliding guidance of the cutting blade in the cutting blade holder after cutting the rebar.

[0024] The aforementioned components achieve the following effects: the bearing groove on the bearing block provides stable support and final positioning guidance for the reinforcing bar, ensuring the accuracy of the reinforcing bar cutting position and preventing the reinforcing bar from jumping up and down during cutting; the sliding cooperation between the column and the bearing rod provides stable vertical guidance for the lifting and lowering of the cutting blade holder, preventing the cutting blade from swaying during the cutting process and ensuring the flatness of the cut surface of the reinforcing bar; the No. 3 spring can drive the cutting blade holder and cutting blade to quickly move upward and reset after the cutting action is completed, preparing for the next cutting operation and improving the continuous operation capability of the device; the guide groove on the bearing block can limit and guide the downward stroke of the cutting blade, preventing the cutting blade from overcutting, while also protecting the cutting edge of the cutting blade and extending the service life of the device.

[0025] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, the adjustable structure design of the second trigger element enables rapid and flexible adjustment of the rebar cutting length. By adjusting the fixed position of the slider in the groove, and cooperating with the pin and the different limit holes on the sliding plate for fixing, the fixed length trigger distance of the rebar can be quickly changed without disassembling or replacing any equipment parts. This adapts to the processing needs of rebar precast components of different lengths and specifications, significantly improving the equipment's production changeover efficiency and versatility. At the same time, the mechanical contact fixed length trigger structure replaces the traditional manual marking and positioning method, resulting in high fixed length trigger accuracy and good consistency in the length of finished rebar products during batch processing. This fundamentally reduces the dimensional error of rebar cutting and ensures the processing accuracy of rebar precast components.

[0026] 2. This invention employs a single-power, homogeneous drive structure. A primary drive component synchronously drives the conveying component and clamping device, achieving complete synchronization between the rebar conveying and clamping actions. Combined with a mechanically triggered clamping structure using guide wheels and trigger wheels, the rebar can be automatically clamped and positioned simultaneously when it is conveyed to a fixed length position and the cutting action is triggered. This completely eliminates the timing deviation caused by multi-power drives, avoiding problems such as delayed or premature clamping that hinder rebar conveying. The clamping plate, combined with an anti-slip rubber pad, stably clamps rebars of different diameters, significantly increasing clamping friction and effectively preventing the rebar from shifting or bouncing under shear force during cutting. This ensures the flatness of the cut surface, improves the quality of rebar processing, and completely eliminates safety hazards caused by rebar bouncing, greatly enhancing the safety of the operation.

[0027] 3. In this invention, through the hierarchical mechanical linkage of the No. 2 trigger, No. 1 trigger, No. 2 drive, and the cutting component, a fully automated linkage operation is achieved, encompassing fixed-length rebar conveying, automatic triggering, synchronous clamping, precise cutting, and automatic reset. The entire device uses only a single No. 1 motor as the main power source for the conveying and clamping processes, along with a single electric actuator as the execution component for the cutting process. This significantly simplifies the equipment's power system and overall structure, reduces manufacturing costs and operational failure rates, and features simple and convenient control logic with low on-site maintenance difficulty. Furthermore, the mechanical linkage triggering method ensures fast action response and smooth, delay-free connection between processes, enabling continuous automated rebar processing and significantly improving the production efficiency of precast rebar components. This aligns with the large-scale and standardized production needs of prefabricated buildings.

[0028] 4. In this invention, the conveying component adopts a threaded adjustment structure of threaded rod and nut block, which can quickly adjust the clamping distance between the two sets of conveying wheels to adapt to the conveying and clamping requirements of steel bars of different diameters and specifications. It can realize the continuous processing of steel bars of multiple specifications without changing parts, further expanding the application range of the equipment. The limiting groove on the conveying wheel, together with the guide groove of the guide wheel, can provide double guidance and limitation for the conveying path of the steel bars, effectively avoiding the problems of slippage and lateral deviation during the conveying of steel bars, ensuring the straightness of the steel bar conveying, and further improving the accuracy of steel bar length cutting and the stability of operation. Attached Figure Description

[0029] Figure 1 This invention provides a three-dimensional structural schematic diagram of a precision positioning and clamping device for precast steel bars; Figure 2 This invention provides a three-dimensional structural diagram of a precision positioning and clamping device for precast steel bars from another angle. Figure 3 This invention provides a three-dimensional structural diagram of a precision positioning and clamping device for precast steel bars; Figure 4 This invention proposes a precision positioning and clamping device for precast steel reinforcement components. Figure 3 A structural diagram from another angle; Figure 5 This invention provides a schematic diagram of the structure of the first and second driving components of a precision positioning and clamping device for precast steel bars; Figure 6 This invention provides a schematic diagram of the clamping device for a precision positioning and clamping device for precast steel bars; Figure 7 This invention provides a schematic diagram of the structure of the No. 1 triggering element and the cutting element of a precision positioning and clamping device for precast steel bars; Figure 8 This invention provides a structural schematic diagram of the No. 2 trigger element, the No. 1 trigger element, and the cutting element of a precision positioning and clamping device for precast steel bars; Figure 9 The present invention provides a schematic diagram of the second trigger element of a precision positioning and clamping device for precast steel bars.

[0030] Legend: 1. Base plate; 2. Clamping device; 21. Guide wheel; 22. Guide groove; 23. Connecting block; 24. Trigger wheel; 25. Clamping component; 251. Protrusion; 252. Shaft; 253. Trigger block; 2531. Inclined surface; 254. Spring No. 1; 255. Clamping plate; 256. Rubber pad; 3. Driving component; 31. Motor No. 1; 32. Synchronous pulley; 33. Synchronous belt; 4. Adjusting component; 41. Assembly plate; 42. Limit groove; 43. Threaded rod; 44. Nut block; 45. Transmission wheel; 5. Driving component No. 2; 51. Mounting bracket; 52. Electric actuator; 53. Extrusion. 6. Block; 6. No. 1 trigger element; 61. Sleeve; 62. Slide rod; 63. Pad block; 64. No. 1 torsion spring; 65. No. 2 spring; 7. No. 2 trigger element; 71. Adjusting plate; 711. Slide groove; 712. Adjusting hole; 713. Track groove; 72. Rotating plate; 721. Pin rod; 722. Trigger plate; 73. Sliding plate; 731. Limiting hole; 74. Slider; 75. Hinge rod; 76. No. 2 torsion spring; 8. Cut-off piece; 81. Assembly block; 82. Bearing block; 821. Bearing groove; 822. Guide groove; 83. Column; 84. Bearing rod; 85. No. 3 spring; 86. Cut-off knife holder. Detailed Implementation

[0031] like Figure 1-9As shown, a precision positioning and clamping device for precast steel bars uses a base plate 1 as the mounting base. The base plate 1 adopts a horizontally arranged plate structure, providing a stable mounting and support foundation for all functional components of the device. The upper surface of the base plate 1 is sequentially arranged with a conveying component 4, a clamping device 2, a first driving component 3, a second trigger component 7, a first trigger component 6, a second driving component 5, and a cutting component 8. These components are arranged sequentially according to the steel bar conveying path, ensuring the continuous execution of steel bar conveying, clamping, fixed-length triggering, and cutting actions.

[0032] The conveyor 4 is provided with an assembly plate 41, which is vertically fixed to the upper surface of the base plate 1 by fasteners. The side wall of the assembly plate 41 is provided with a limiting groove 42, which extends vertically. A threaded rod 43 is rotatably connected inside the limiting groove 42. The two ends of the threaded rod 43 are respectively rotatably engaged with the upper and lower inner walls of the limiting groove 42 through bearings. A nut block 44 is threadedly connected to the rod body of the threaded rod 43. The outer wall of the nut block 44 slides against the inner wall of the limiting groove 42. By rotating the threaded rod 43, the nut block 44 can be driven to slide up and down along the limiting groove 42 to adjust the installation height of the nut block 44. The side wall of the nut block 44 is rotatably connected to a transmission wheel 45 via a rotating shaft. The side wall of the assembly plate 41, corresponding to the lower position of the transmission wheel 45, is also rotatably connected to another set of transmission wheels 45 via a rotating shaft. The two sets of transmission wheels 45 are arranged close to each other in the vertical direction. Limiting grooves are opened on the circumferential surface of both sets of transmission wheels 45. The limiting grooves are arranged in a closed loop along the circumferential direction of the transmission wheel 45. The steel bar to be processed can be inserted between the limiting grooves of the two sets of transmission wheels 45. The rotation of the transmission wheel 45 drives the steel bar to be transported in a straight line in the horizontal direction.

[0033] The first drive unit 3 is equipped with a first motor 31, which is fixedly mounted on the upper surface of the base plate 1 via a mounting base. A bearing plate is fixed on the upper surface of the base plate 1 corresponding to the output end of the first motor 31. The output shaft of the first motor 31 passes horizontally through the side wall of the bearing plate and extends to the outside of the bearing plate. One end of the output shaft of the first motor 31 located outside the bearing plate is fixedly connected to a synchronous pulley 32 via a coupling. The rotating shaft end of the lower transmission wheel 45 is also fixedly connected to another synchronous pulley 32. The two synchronous pulleys 32 are in the same vertical plane, and a synchronous belt 33 is wound between the two synchronous pulleys 32. The transmission connection between the two synchronous pulleys 32 is realized through the synchronous belt 33. When the first motor 31 starts, it can drive the lower transmission wheel 45 to rotate through the transmission of the synchronous pulley 32 and the synchronous belt 33, providing power for the conveying of steel bars.

[0034] The clamping device 2 includes a guide wheel 21, which is fixedly mounted on the output shaft of the first motor 31. The guide wheel 21 rotates coaxially with the output shaft of the first motor 31. A guide groove 22 is formed on the circumferential surface of the guide wheel 21. The guide groove 22 is arranged in a closed loop along the circumferential direction of the guide wheel 21. The steel bar conveyed by the transmission wheel 45 can be clamped into the guide groove 22. The rotation of the guide wheel 21 coordinates the horizontal conveying of the steel bar and provides secondary guidance for the conveying path of the steel bar. Connecting blocks 23 are fixedly sleeved on both sides of the output shaft of the first motor 31. The upper ends of the two sets of connecting blocks 23 are vertically fixed with uprights. The top of the uprights is fixedly connected to trigger wheels 24. The axis of the trigger wheels 24 is parallel to the axis of the guide wheel 21. The two sets of trigger wheels 24 are symmetrically arranged on both sides of the guide wheel 21, and the circumferential surface of the trigger wheels 24 extends to the area above the guide wheel 21. A clamping member 25 is installed on the guide wheel 21. The clamping member 25 can rotate synchronously with the guide wheel 21 and is squeezed by the trigger wheel 24 when it rotates to the position of the trigger wheel 24, thus completing the clamping action of the steel bar.

[0035] The clamping member 25 includes protrusions 251. Protrusions 251 are fixedly connected to both sides of the guide groove 22 on the end face of the guide wheel 21. Two sets of protrusions 251 are symmetrically arranged. A shaft 252 is fixedly threaded through each set of protrusions 251. The axis of the shaft 252 is parallel to the axis of the guide wheel 21. A trigger block 253 is rotatably connected to the shaft 252, and the trigger block 253 can rotate freely around the axis of the shaft 252. An inclined surface 2531 is provided at the end of the trigger block 253 facing the trigger wheel 24. The inclined surface 2531 is inclined along the rotation direction of the trigger block 253. A spring is fixedly connected between the two sets of trigger blocks 253, with both ends of the spring fixedly connected to the opposite surfaces of the two sets of trigger blocks 253, providing a restoring force for the trigger blocks 253. Between the two sets of trigger blocks 253 facing each other, clamping plates 255 are fixedly connected to both sides of the guide groove 22. The surface of the clamping plate 255 is perpendicular to the conveying direction of the steel bar. A rubber pad 256 is fixedly installed on the side of the clamping plate 255 facing the steel bar. The rubber pad 256 is made of anti-slip and wear-resistant material to increase the friction during clamping and prevent the steel bar from slipping.

[0036] The second drive unit 5 includes a mounting bracket 51, which is fixedly mounted on the top of the assembly plate 41 by fasteners. The mounting bracket 51 adopts an L-shaped bending structure. An electric actuator 52 is vertically fixedly mounted on the horizontal section of the mounting bracket 51. The output rod of the electric actuator 52 is vertically downward. An extrusion block 53 is fixedly connected to the bottom end of the output rod of the electric actuator 52. The extrusion block 53 adopts a block structure. When the electric actuator 52 is started, it can drive the extrusion block 53 to move up and down in the vertical direction, outputting downward extrusion force.

[0037] The trigger element 6 includes a sleeve 61, which is vertically fixed to the upper surface of the base plate 1. A slide rod 62 is slidably connected to the inner wall of the sleeve 61. The slide rod 62 can slide up and down along the axis of the sleeve 61 and rotate around the axis of the sleeve 61. A pad 63 is fixedly connected to the outer surface of the slide rod 62. The pad 63 is horizontally arranged, and one end of the pad 63 extends to the area below the pressing block 53. A torsion spring 64 is sleeved on the upper end of the slide rod 62 at the pad 63. The two ends of the torsion spring 64 are fixedly connected to the pad 63 and the slide rod 62, respectively, providing a reset torque for the rotation of the slide rod 62. A second spring 65 is sleeved on the lower end of the slide rod 62 at the pad 63. The two ends of the second spring 65 are fixedly connected to the top end of the sleeve 61 and the stepped surface of the slide rod 62, respectively, providing a reset spring force for the up and down sliding of the slide rod 62.

[0038] The second trigger element 7 includes an adjusting plate 71, which is fixedly mounted on the upper surface of the base plate 1 by fasteners. A groove 711 is formed on the side wall of the adjusting plate 71, extending horizontally along the conveying direction of the reinforcing bar. A slider 74 is slidably connected to the inner wall of the groove 711. Several adjusting holes 712 are formed on one side of the inner wall of the groove 711 in a horizontal direction. The slider 74 can be fixed at any position in the groove 711 by bolts inserted into the adjusting holes 712. A hinge rod 75 is fixed to the side wall of the slider 74. A rotating plate 72 is rotatably connected to the body of the hinge rod 75. The rotating plate 72 can rotate around the axis of the hinge rod 75. A second torsion spring 76 is sleeved on the body of the hinge rod 75. The two ends of the second torsion spring 76 are fixedly connected to the hinge rod 75 and the rotating plate 72 respectively, providing a reset torque for the rotation of the rotating plate 72. A track groove 713 is provided on the side wall of the adjusting plate 71 above the slide groove 711. The track groove 713 extends horizontally along the conveying direction of the reinforcing bar. A sliding plate 73 is slidably connected to the inner wall of the track groove 713, and the sliding plate 73 can slide horizontally along the track groove 713. Several limiting holes 731 are provided on the plate body of the sliding plate 73 in the horizontal direction. A pin 721 is inserted into the end of the rotating plate 72 away from the slider 74. One end of the pin 721 passes through the rotating plate 72 and is inserted into the limiting hole 731 on the sliding plate 73, so as to realize the fixed connection between the rotating plate 72 and the sliding plate 73. A trigger plate 722 is fixedly installed on the side of the rotating plate 72 facing the reinforcing bar conveying path. The surface of the trigger plate 722 is perpendicular to the conveying direction of the reinforcing bar. When the reinforcing bar is conveyed to a set length, the end can squeeze the trigger plate 722 to drive the rotating plate 72 to rotate.

[0039] The cutting component 8 includes an assembly block 81, which is fixed to the upper surface of the base plate 1 by fasteners. A bearing block 82 is fixedly installed on the upper surface of the assembly block 81. A bearing groove 821 is formed on the upper surface of the bearing block 82, which extends horizontally along the conveying direction of the reinforcing bar. The reinforcing bar conveyed by the guide wheel 21 can slide into the bearing groove 821, and the bearing block 82 provides stable bearing support for the reinforcing bar. Vertical columns 83 are vertically fixedly connected to both sides of the upper surface of the assembly block 81 corresponding to the bearing block 82. The two sets of columns 83 are symmetrically arranged, and each set of columns 83 has a vertical sliding hole inside. A bearing rod 84 is slidably connected in the sliding hole and can slide up and down along the axis of the sliding hole. A cutting blade holder 86 is fixedly connected to the top of both sets of bearing rods 84. The cutting blade holder 86 is horizontally arranged, and a cutting blade is fixedly installed on the lower surface of the cutting blade holder 86, with the cutting edge of the cutting blade facing the bearing block 82. A No. 3 spring 85 is fitted onto the body of the support rod 84. The two ends of the No. 3 spring 85 are fixedly connected to the top of the column 83 and the lower surface of the cutting blade holder 86, respectively, providing a restoring force for the lifting and lowering of the cutting blade holder 86. A guide groove 822 is formed on the upper surface of the support block 82, corresponding to the position directly below the cutting blade. The guide groove 822 is adapted to the shape of the cutting edge of the cutting blade and can accommodate the cutting edge when the cutting blade moves downward, providing guidance and limiting for the cutting action.

[0040] Working principle: Before operation, adjust the length setting parameter of trigger 7 according to the design length of the precast steel bar to be processed. During adjustment, first pull out pin 721 to disconnect the connection between rotating plate 72 and sliding plate 73, then loosen the fixing bolt on slider 74 to release the limit of slider 74 in slide groove 711. Slide slider 74 along slide groove 711 to the position of corresponding adjustment hole 712. After adjustment, tighten the bolt to fix the position of slider 74. Then insert pin 721 into the corresponding limit hole 731 on sliding plate 73 to re-fix the connection position of rotating plate 72 and sliding plate 73, thus completing the setting of steel bar cutting length. At the same time, rotate threaded rod 43 to drive nut block 44 to slide along limit groove 42, adjusting the distance between two sets of transmission wheels 45 so that the limit grooves of the two sets of transmission wheels 45 can stably clamp the steel bar to be processed, adapting to the processing requirements of steel bars of different diameters.

[0041] After the device is started, the No. 1 motor 31 starts running, and drives the transmission wheel 45 below to rotate through the synchronous pulley 32 and synchronous belt 33. The two sets of transmission wheels 45 cooperate to clamp the steel bars and drive the steel bars to be continuously transported in the horizontal direction. The steel bars move forward by passing through the guide groove 22 of the guide wheel 21 and the bearing groove 821 of the bearing block 82 in sequence. At the same time, the output shaft of the No. 1 motor 31 drives the guide wheel 21 to rotate synchronously, and the clamping parts 25 on the guide wheel 21 rotate synchronously with the guide wheel 21.

[0042] When the front end of the rebar is delivered to the set length, the end of the rebar presses against the trigger plate 722, causing the rotating plate 72 to rotate around the hinge rod 75. While the rotating plate 72 is rotating, the sliding plate 73 is driven to slide horizontally along the track groove 713 through the pin 721. During the sliding process, the sliding plate 73 presses against the pad 63, causing the sliding rod 62 to rotate around the axis of the sleeve 61. The first torsion spring 64 is twisted and stores force, causing the pad 63 to rotate to the position directly below the pressing block 53. At the same time, the sliding rod 62 compresses the second spring 65 during rotation, completing the trigger preparation for the cutting action.

[0043] While the trigger plate 722 is pressed against the end of the rebar, the guide wheel 21 drives the clamping member 25 to rotate to the position of the trigger wheel 24. The trigger wheel 24 presses against the inclined surface 2531 on the trigger block 253, causing the two sets of trigger blocks 253 to rotate towards each other around the shaft 252. When the two sets of trigger blocks 253 rotate, they drive the clamping plate 255 to move closer to each other, while stretching the spring to store force. The two sets of clamping plates 255, together with the rubber pad 256, stably clamp the outer surface of the rebar, completing the clamping and positioning of the rebar and preventing the rebar from moving or jumping during the cutting process.

[0044] After the rebar is clamped and positioned, the electric actuator 52 is activated, causing the extrusion block 53 to move vertically downward. The extrusion block 53 presses against the pad 63 below, causing the slide rod 62 to slide downward along the inner wall of the sleeve 61. During the downward movement of the slide rod 62, the second spring 65 is further compressed. At the same time, the pad 63 presses against the cutting blade holder 86 as it moves downward, causing the cutting blade holder 86 and the cutting blade to move vertically downward. When the cutting blade holder 86 moves downward, it causes the bearing rod 84 to slide downward along the sliding hole of the column 83, while simultaneously compressing the third spring 85 to store power. The cutting blade moves downward and contacts the rebar in the bearing groove 821, completing the fixed-length cutting of the rebar. During the cutting process, the bearing block 82 provides stable support for the rebar, and the guide groove 822 provides downward guidance for the cutting blade, ensuring the flatness of the cut surface.

[0045] After the rebar is cut, the electric actuator 52 drives the pressing block 53 to move upward and reset. The cut rebar is removed manually, and the end of the rebar is released from the trigger plate 722. The second torsion spring 76 releases torque and drives the rotating plate 72 to rotate in the opposite direction around the hinge rod 75 to reset. The rotating plate 72 drives the sliding plate 73 to slide in the opposite direction along the track groove 713 to reset. The sliding plate 73 is released from the pressure on the pad 63. The first torsion spring 64 releases torque and drives the sliding rod 62 and the pad 63 to rotate in the opposite direction to reset. At the same time, the second spring 65 releases elasticity and drives the sliding rod 62 to move upward along the sleeve 61 to reset. The third spring 85 releases elasticity and drives the bearing rod 84, the cutting knife holder 86 and the cutting knife to move upward and reset, completing the reset of the cutting mechanism.

[0046] At the same time, the guide wheel 21 drives the clamping member 25 to rotate and disengage from the squeezing range of the trigger wheel 24. The spring releases its elastic force and drives the two sets of trigger blocks 253 to rotate in opposite directions around the shaft 252 to reset. This causes the clamping plates 255 to move away from each other, releasing the clamping of the steel bar. The first motor 31 continues to run, driving the transmission wheel 45 to continue conveying the steel bar, entering the next cycle of fixed-length conveying, clamping, triggering, cutting, and resetting, thus realizing the continuous automated processing of steel bar precast components.

Claims

1. A precision positioning and clamping device for precast steel bars, comprising a base plate (1), characterized in that: The base plate (1) is equipped with a conveying component (4) for conveying the reinforcing bars. The base plate (1) is equipped with a cutting component (8), a first trigger component (6), and a second trigger component (7). When the conveying component (4) conveys the reinforcing bars to a certain distance, it triggers the second trigger component (7). When the second trigger component (7) is triggered, it drives the first trigger component (6) to rotate. The conveying component (4) is equipped with a second driving component (5) for squeezing the rotated first trigger component (6) to trigger the cutting component (8) to cut the reinforcing bars. The base plate (1) is equipped with a clamping device (2) for clamping the reinforcing bars to prevent them from jumping around when they are cut by the cutting component (8). The base plate (1) is equipped with a first driving component (3) for driving the clamping device (2) to clamp the reinforcing bars and for driving the conveying component (4) to convey the reinforcing bars.

2. The precision positioning and clamping device for precast steel reinforcement components according to claim 1, characterized in that: The conveyor (4) is provided with an assembly plate (41), which is mounted on the base plate (1). A limiting groove (42) is provided on the assembly plate (41) for the nut block (44) to slide. A threaded rod (43) is rotatably connected in the limiting groove (42) of the assembly plate (41). The threaded rod (43) is threadedly connected to the nut block (44). Two transmission wheels (45) are rotatably connected to each other on the nut block (44) and the assembly plate (41) via a rotating shaft. A limiting groove is provided on the two transmission wheels (45) for the reinforcing bar to move in one of the transmission wheels (45) when it rotates.

3. The precision positioning and clamping device for precast steel bars according to claim 2, characterized in that: The first drive unit (3) is equipped with a first motor (31). The first motor (31) is mounted on the base plate (1) by means of a mounting base. The output shaft of the first motor (31) passes through the support plate on the base plate (1) and extends to the outside of the support plate. The end of the output shaft of the first motor (31) located outside the support plate is connected to a synchronous pulley (32) by means of a coupling. Another synchronous pulley (32) is connected to the rotating shaft of one of the transmission wheels (45). The two synchronous pulleys (32) are connected by a synchronous belt (33).

4. The precision positioning and clamping device for precast steel bars according to claim 3, characterized in that: The clamping device (2) includes a guide wheel (21), which is mounted on the output shaft of a first motor (31). The guide wheel (21) has a guide groove (22) for guiding the movement of the reinforcing bar. The output shaft of the first motor (31) is fitted with connecting blocks (23) on both sides of the guide wheel (21). The connecting blocks (23) are connected to a trigger wheel (24) by means of a vertical rod. The guide wheel (21) is equipped with a clamping component (25) for clamping the reinforcing bar after being triggered by the trigger wheel (24).

5. The precision positioning and clamping device for precast steel bars according to claim 4, characterized in that: The clamping member (25) contains a protrusion (251). The guide wheel (21) is fixedly connected to both sides of the guide groove (22). The protrusion (251) is rotatably connected to the trigger block (253) by means of the shaft (252). The trigger block (253) is provided with a slope (2531) for being squeezed when it rotates to the trigger wheel (24) as the guide wheel (21) rotates. A No. 1 spring (254) is connected between the two trigger blocks (253). The clamping plate (255) is fixedly connected between the opposite sides of the two trigger blocks (253) and on both sides of the guide groove (22). The clamping plate (255) is equipped with an anti-slip rubber pad (256).

6. The precision positioning and clamping device for precast steel bars according to claim 5, characterized in that: The second drive component (5) includes a mounting bracket (51), the top of the assembly plate (41) is equipped with the mounting bracket (51), the mounting bracket (51) is equipped with an electric push rod (52), and the output rod of the electric push rod (52) is connected to an extrusion block (53).

7. The precision positioning and clamping device for precast steel bars according to claim 6, characterized in that: The first trigger (6) includes a sleeve (61), and a slide rod (62) is slidably connected to the inner wall of the sleeve (61). A pad (63) is fixedly connected to the outer surface of the slide rod (62). A first torsion spring (64) is sleeved at the upper end of the slide rod (62) and connected to the pad (63) and the slide rod (62) at both ends respectively. A second spring (65) is sleeved at the lower end of the slide rod (62) and connected to the sleeve (61) and the slide rod (62) at both ends respectively.

8. The precision positioning and clamping device for precast steel bars according to claim 7, characterized in that: The second trigger (7) includes an adjustment plate (71), which is mounted on the base plate (1). A slider (74) is slidably connected to the adjustment plate (71). The slider (74) is rotatably connected to a rotating plate (72) via a hinge rod (75). A second torsion spring (76) is sleeved on the hinge rod (75) and connected at both ends to the hinge rod (75) and the rotating plate (72) respectively. A sliding plate (73) is slidably connected to the adjustment plate (71). A pin (721) is inserted into the sliding plate (73). The end of the pin (721) away from the sliding plate (73) passes through the end of the rotating plate (72) away from the slider (74) and extends to the outside.

9. The precision positioning and clamping device for precast steel bars according to claim 8, characterized in that: The adjusting plate (71) has a groove (711) for sliding the slider (74). The inner wall of the groove (711) has several adjusting holes (712) and the slider (74) is fixed in the groove (711) by bolts. The adjusting plate (71) has a track groove (713) for sliding the sliding plate (73). The rotating plate (72) is equipped with a trigger plate (722). The sliding plate (73) has a limit hole (731) and a pin (721) passes through the rotating plate (72) to fix the connection between the rotating plate (72) and the sliding plate (73).

10. The precision positioning and clamping device for precast steel bars according to claim 9, characterized in that: The cutting component (8) includes an assembly block (81), on which a bearing block (82) is installed. The bearing block (82) has a bearing groove (821) for the steel bar to slide. The assembly block (81) is fixedly connected to two columns (83) on both sides of the bearing block (82). A bearing rod (84) is slidably connected inside the column (83). The two bearing rods (84) are connected to a cutting blade holder (86). A cutting blade is installed on the cutting blade holder (86). A No. 3 spring (85) is sleeved on the bearing rod (84) with its two ends connected to the column (83) and the cutting blade holder (86) respectively. A guide groove (822) is provided on the bearing block (82) for the sliding guide of the cutting blade in the cutting blade holder (86) after cutting the steel bar.

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