Steel bar uncoiling and cutting device and method

Abstract

The invention provides a reinforcing steel bar uncoiling and cutting device and method, relates to the field of reinforcing steel bar processing, and aims to solve the problems that the existing reinforcing steel bar cutting length is uncontrollable and short reinforcing steel bar sections cannot be processed, a straightening assembly is configured to adjust a reinforcing steel bar from a curled state to a linear state through a straightening wheel, a tensioning wheel and a cutting mechanism and ensure that the reinforcing steel bar keeps tension in the conveying process. Meanwhile, preliminary cutting is achieved; the cutting assembly guides the reinforcing steel bars to enter through a guide rod, the clamping mechanism fixes the reinforcing steel bars, the cutting mechanism accurately cuts the reinforcing steel bars under the driving of a pushing rod through a blade, the cutting length of the reinforcing steel bars is flexibly adjusted by accurately controlling the clamping and cutting process, and the machining requirements of the reinforcing steel bars with different lengths are met; and the accuracy and flexibility of steel bar cutting are improved, so that the processing degree of a steel bar preprocessing machine better meets the requirements of subsequent processes, and the overall processing efficiency and quality are improved.

Description

Technical Field

[0001] The invention relates to the field of steel bar processing, and in particular to a steel bar uncoiling and cutting device and method. Background Art

[0002] Steel bars can enhance the tensile strength of concrete structures, making them more stable and safer. When concrete structures are subjected to tension, the concrete itself has a low tensile strength and is prone to cracking, while steel bars can bear the tension and prevent the concrete structure from being damaged by excessive tension. Steel bars are in coils when they leave the factory, and steel bar coils cannot be used directly for processing. Only steel bar segments that have been straightened and cut to a fixed length can be used for subsequent steel bar forming.

[0003] The prior art discloses a variety of steel bar cutting devices, which realize the transportation of steel bars through a feeding device, on which a steel bar clamp is provided. While fixing the steel bars, the steel bar cutting device continuously cuts the steel bars. The device improves the cutting efficiency, but the cutting length of the steel bars cannot be controlled; the positioning effect can also be achieved by a movable clamping plate that clamps or releases the steel bars as the movable cutter moves, and the steel bars are cut by the relative movement of the movable cutter and the fixed cutter. The device does not need to set a driving source for the clamping mechanism, saves energy, simplifies the structure, and improves the compactness of the device; but the current steel bar pre-processing machine cannot process shorter steel bar segments, and the length of the steel bar cut cannot be controlled, resulting in the steel bar pre-processing machine The degree of processing of the steel bars does not meet the requirements of subsequent processes. Summary of the invention

[0004] The purpose of the present invention is to provide a steel bar uncoiling and cutting device and method in view of the defects existing in the prior art. The straightening component adjusts the steel bar from a curled state to a straight state through a straightening wheel, a tensioning wheel and a cutting mechanism, and ensures that the steel bar maintains tension during transportation, while achieving preliminary cutting; the cutting component guides the steel bar into the machine through a guide rod, the clamping mechanism fixes the steel bar, and the cutting mechanism uses a blade to accurately cut the steel bar under the drive of a push rod. By accurately controlling the clamping and cutting process, the steel bar cutting length can be flexibly adjusted to meet the processing requirements of steel bars of different lengths; the accuracy and flexibility of steel bar cutting are improved, so that the processing degree of the steel bar pre-processing machine is more in line with the requirements of subsequent processes, thereby improving the overall processing efficiency and quality.

[0005] The first object of the present invention is to provide a steel bar uncoiling and cutting device, which adopts the following scheme:

[0006] include:

[0007] A reel support, used to carry the rebar coil;

[0008] The straightening assembly comprises a straightening mechanism, a tensioning mechanism and a cutting mechanism which are sequentially distributed along the conveying direction of the steel bars. The straightening mechanism is provided with a plurality of straightening wheels which are spaced apart from each other. The tensioning mechanism comprises tensioning wheels which are arranged in pairs, and a tensioning channel for the steel bars to pass through is formed between the tensioning wheels. The cutting mechanism comprises an upper cutting knife and a lower cutting knife which match each other, and a cutting channel is formed between the two.

[0009] The cutting assembly includes a guide rod and a clamping mechanism and a cutting mechanism arranged along the guide rod. The guide rod is provided with a guide groove for receiving the steel bars output by the straightening assembly, the clamping mechanism is provided with a clamping part for accommodating the steel bars, and the cutting mechanism is provided with a blade. When the blade is driven by the propulsion rod, it cuts the steel bars clamped by the clamping part.

[0010] Furthermore, the straightening wheels are installed on the straightening wheel bracket, and the plurality of straightening wheels are divided into two groups and are staggeredly installed at the vertical ends of the straightening wheel bracket.

[0011] Furthermore, the straightening mechanism also includes a rotating straightening wheel, which is rotatably mounted on a straightening wheel bracket, and a channel for the steel bars to pass through is provided at the center of the rotating straightening wheel.

[0012] Furthermore, in the direction of steel bar conveying, limiting wheels are respectively provided upstream of the straightening mechanism, between the modulation mechanism and the tensioning mechanism, and the limiting wheels form limiting channels for the steel bars to pass through.

[0013] Furthermore, a return spring is installed between the upper cutter and the lower cutter, the upper cutter is abutted against a knock hammer, and the rotating rod is connected to the knock hammer to drive the knock hammer to push the upper cutter to move, so that the upper cutter and the lower cutter form a shearing action.

[0014] Furthermore, the downstream of the cut-off mechanism is connected to a guide rod.

[0015] Furthermore, the clamping mechanism includes a fixed clamping mechanism and a movable clamping mechanism. The fixed clamping mechanism includes a fixed push rod and a fixed clamping plate, and a clamping portion is formed between the fixed push rod and the fixed clamping plate; the movable clamping mechanism includes a movable push rod, a movable clamping block and a movable clamping plate, and a clamping portion is formed between the movable clamping block and the movable clamping plate and slides relative to the guide groove. The movable push rod is connected to the movable clamping block to drive the movable clamping block and the movable clamping plate to move, thereby adjusting the clamping portion position of the movable clamping mechanism.

[0016] Furthermore, the cutting mechanism also includes a driving element, an output end of the driving element is connected to the blade, and the push rod is connected to the driving element to drive the driving element and the blade to move relative to the clamping part.

[0017] A second object of the present invention is to provide a method for uncoiling and cutting a steel bar, using the uncoiling and cutting device for the steel bar as described in the first object, comprising:

[0018] The steel bar coil is installed on the reel support, and one end of the steel bar on the steel bar coil is sent into the straightening assembly;

[0019] After the steel bar passes through the straightening mechanism, it cooperates with the tensioning wheel. Driven by the tensioning wheel, the steel bar coil gradually releases the steel bar wound thereon;

[0020] The steel bar is initially straightened under the action of the straightening wheel, and the straightened steel bar enters the tensioning mechanism for stretching and straightening, and the straightened steel bar is cut once by the cutting mechanism;

[0021] The cut steel bars are fed into the cutting assembly, clamped and stabilized by the clamping mechanism according to the required length, and then cut for the second time by the cutting mechanism.

[0022] Furthermore, the guide rod receives the steel bars output by the cutting mechanism, clamps the steel bars after adjusting their positions, and then cuts the steel bars to obtain the required length.

[0023] Compared with the prior art, the present invention has the following advantages and positive effects:

[0024] In view of the current problems that the cutting length of steel bars cannot be controlled and short steel bar segments cannot be processed, a straightening component is configured to adjust the steel bars from a curled state to a straight state through straightening wheels, tensioning wheels and cutting mechanisms, and ensure that they maintain tension during transportation, while achieving preliminary cutting; the cutting component guides the steel bars in through guide rods, the clamping mechanism fixes the steel bars, and the cutting mechanism uses a blade to accurately cut the steel bars under the drive of the push rod. By accurately controlling the clamping and cutting process, the flexible adjustment of the steel bar cutting length is achieved, meeting the processing requirements of steel bars of different lengths; the accuracy and flexibility of steel bar cutting are improved, so that the processing degree of the steel bar pre-processing machine is more in line with the requirements of subsequent processes, and the overall processing efficiency and quality are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] Figure 1 It is a front view of a steel bar pretreatment line in Embodiments 1 and 2 of the present invention;

[0027] Figure 2 It is an overall axial side schematic diagram of a steel bar pretreatment line in Examples 1 and 2 of the present invention;

[0028] Figure 3 It is an overall isometric view of the steel bar coil in Examples 1 and 2 of the present invention;

[0029] Figure 4 It is an overall cross-sectional view of the steel bar coil in Examples 1 and 2 of the present invention;

[0030] Figure 5It is a front view of the straightening and stretching system in Examples 1 and 2 of the present invention;

[0031] Figure 6 It is a partial explosion schematic diagram of the straightening and stretching system in Examples 1 and 2 of the present invention;

[0032] Figure 7 It is a partial cross-sectional view of the transmission system of the straightening and stretching system in Embodiments 1 and 2 of the present invention;

[0033] Figure 8 It is a front view of the transmission system of the straightening and stretching system in Embodiments 1 and 2 of the present invention;

[0034] Fig. 9 It is a right side view of the transmission system of the straightening and stretching system in Embodiments 1 and 2 of the present invention;

[0035] Fig.10 It is an exploded schematic diagram of the straightening wheel of the straightening and stretching system in Examples 1 and 2 of the present invention;

[0036] Fig.11 It is an exploded schematic diagram of the cutting device of the straightening and stretching system in Examples 1 and 2 of the present invention;

[0037] Fig.12 It is a front view of the cutting system in Examples 1 and 2 of the present invention;

[0038] Fig.13 It is an isometric schematic diagram of the cutting system in Examples 1 and 2 of the present invention;

[0039] Fig.14 It is an exploded view of the push rod cylinder in Examples 1 and 2 of the present invention;

[0040] Fig.15 It is a partial enlarged view of the cutting device of the cutting system in Examples 1 and 2 of the present invention;

[0041] Among them, Ⅰ reel support; Ⅱ straightening assembly; Ⅲ cutting assembly; Ⅰ-01 steel bar roll support; Ⅰ-02 steel bar roll; Ⅱ-01 machine body; Ⅱ-02 limit wheel one; Ⅱ-03 straightening wheel support; Ⅱ-04 straightening wheel; Ⅱ-05 rotating straightening wheel; Ⅱ-06 limit wheel two; Ⅱ-07 limit wheel three; Ⅱ-08 operating lever; Ⅱ-09 tensioning upper wheel; Ⅱ-10 tensioning lower wheel; Ⅱ-11 power upper wheel; Ⅱ-12 power lower wheel; Ⅱ-13 transmission belt two; Ⅱ-14 rotating wheel one; Ⅱ-15 rotating rod; Ⅱ-16 striking hammer; Ⅱ-17 guide rod; Ⅱ-18 upper cutter; Ⅱ-19 lower cutter; Ⅱ-20 reset spring; Ⅱ-2 1 Motor; Ⅱ-22 Transmission wheel one; Ⅱ-23 Transmission rod; Ⅱ-24 Transmission wheel two; Ⅱ-25 Transmission belt one; Ⅱ-26 Transmission wheel three; Ⅱ-27 Gear one; Ⅱ-28 Transmission wheel three; Ⅱ-29 Straightening roller; Ⅱ-30 Straightening roller bracket; Ⅲ-01 Guide rod one; Ⅲ-02 Control console; Ⅲ-03 Push rod; Ⅲ-04 Motor; Ⅲ-05 Blade; Ⅲ-06 Guide rod two; Ⅲ-07 Bracket; Ⅲ-08 Power supply; Ⅲ-09 PLC; Ⅲ-10 Push rod one; Ⅲ-11 Push rod two; Ⅲ-12 Transverse clamping rod; Ⅲ-13 Longitudinal feed rod; Ⅲ-14 Stop block; Ⅲ-15 Blade guard; Ⅲ-16 Adjustment rod. DETAILED DESCRIPTION

[0042] Example 1

[0043] In a typical embodiment of the present invention, Figure 1-Figure 15 As shown, a steel bar uncoiling and cutting device is provided.

[0044] In the prior art, the steel bar cutting device realizes the conveying and cutting of the steel bars in different ways. Some devices use a feeding device in conjunction with a steel bar clamp, which can continuously cut the steel bars while fixing them, thereby improving the cutting efficiency. However, these devices have deficiencies in controlling the cutting length of the steel bars and cannot achieve precise control, such as being unable to process shorter steel bar segments and the uncontrollable cutting length of the steel bars, resulting in the processed steel bars being unable to meet the requirements of subsequent processes. Based on this, the present embodiment provides a steel bar uncoiling and cutting device and method, which aims to solve the problem in the prior art that the cutting length of the steel bars is uncontrollable and short steel bar segments cannot be processed.

[0045] like Figure 1As shown, the steel bar unwinding and cutting device includes a reel support Ⅰ, a straightening assembly Ⅱ and a cutting assembly Ⅲ which are sequentially distributed. The reel support Ⅰ includes a steel bar reel support Ⅰ-01 for carrying a steel bar reel Ⅰ-02; the straightening assembly Ⅱ includes a straightening mechanism, a tensioning mechanism and a cutting mechanism which are sequentially distributed along the steel bar conveying direction. The straightening mechanism is provided with a plurality of straightening wheels Ⅱ-04 which are spaced apart. The tensioning mechanism includes tensioning wheels arranged in pairs. The tensioning wheels include an upper tensioning wheel Ⅱ-09 and a lower tensioning wheel Ⅱ-10. The upper tensioning wheel A tensioning channel for the steel bars to pass through is formed between Ⅱ-09 and the tensioning lower wheel Ⅱ-10, and the cutting mechanism includes a matching upper cutter Ⅱ-18 and a lower cutter Ⅱ-19, and a cutting channel is formed between the two; the cutting assembly III includes a guide rod and a clamping mechanism and a cutting mechanism arranged along the guide rod, the guide rod is provided with a guide groove for receiving the steel bars output by the straightening assembly, the clamping mechanism is provided with a clamping part for accommodating the steel bars, and the cutting mechanism is provided with a blade Ⅲ-05, which cuts the steel bars clamped by the clamping part when the blade is driven by the propulsion rod Ⅲ-03.

[0046] Specifically, the reel support I is used to carry the rebar coil I-02, which is the starting point of the entire device and provides the rebar material to be processed. The straightening assembly II includes a straightening mechanism, a tensioning mechanism and a cutting mechanism. The straightening mechanism is provided with a plurality of spaced straightening wheels II-04, which are used to adjust the rebar from a curled state to a straight state. The tensioning mechanism includes tensioning wheels II-09 and II-10 arranged in pairs, forming a tensioning channel for the rebar to pass through, ensuring that the rebar maintains a certain tension during transportation to prevent relaxation. The cutting mechanism includes a matching upper cutter II-18 and a lower cutter II-19, and a cutting channel is formed between the two, which is used for preliminary cutting during the rebar transportation process to meet subsequent processing requirements.

[0047] The cutting assembly III includes a guide rod III-01, a clamping mechanism and a cutting mechanism. The guide rod III-01 is provided with a guide groove for receiving the steel bars output by the straightening assembly II, and guides the steel bars into the cutting assembly III. The clamping mechanism is provided with a clamping part for accommodating the steel bars, which is used to fix the steel bars before cutting to ensure the accuracy of the cutting position. The cutting mechanism is provided with a blade III-05, which is driven by the push rod III-03 to cut the steel bars clamped by the clamping part to achieve accurate cutting.

[0048] In order to solve the problem of uncontrollable steel bar cutting length, the clamping mechanism and cutting mechanism in the cutting component III are used to accurately control the steel bar cutting length. The coordinated work of the straightening component II and the cutting component III enables the device to process shorter steel bar segments. The accuracy and flexibility of steel bar cutting are improved to meet the processing requirements of steel bars of different lengths. The device structure is optimized, the compactness and practicality of the device are improved, and the energy consumption is reduced. The processing degree of the steel bar pre-processing machine is more in line with the requirements of the subsequent process, and the overall processing efficiency and quality are improved.

[0049] Specifically, Figure 2 As shown, the steel bar coil Ⅰ-02 of the reel support Ⅰ stores the steel bars to be processed; the straightening component Ⅱ straightens and stretches the steel bars sent by the previous system; the cutting component Ⅲ performs secondary cutting of the steel bars sent by the previous system through the up and down reciprocating motion of the upper cutter Ⅱ-18 and the lower cutter Ⅱ-19. The pre-processing of the steel bar coil Ⅰ-02 is completed, and the steel bar segment is taken out and the subsequent operation is carried out.

[0050] The steel bar coil Ⅰ-01 is connected with the straightening component Ⅱ, and the straightening component Ⅱ is connected with the cutting component Ⅲ; the steel bar coil Ⅰ-01 sends the steel bar to be processed into the straightening component Ⅱ through the traction of the power wheel, stretches, straightens and cuts the steel bar for the first time, and then sends the cut steel bar to the cutting component Ⅲ; the cutting component Ⅲ drives the blade Ⅲ-05 through the motor Ⅲ-04 to cut the steel bar for the second time.

[0051] In this embodiment, the difficulty of cutting steel bars of different diameters is taken into consideration, and the straightening and stretching of the steel bars are taken into account. The steel bars enter the straightening component II and the cutting component III in sequence through the traction of the internal power wheel of the straightening component II; under the action of the shear force, the steel bars are cut twice; the steel bar pretreatment line has a simple structure, is easy to maintain, and has a low cost of use. It improves the productivity of steel bar pretreatment, automates and mechanizes the equipment, reduces labor costs, liberates labor, and has broad application prospects.

[0052] like Figure 5-Figure 11 As shown, the straightening assembly II includes a body II-01, a limiting wheel 1 II-02, a straightening wheel bracket II-03, a straightening wheel II-04, a rotating straightening wheel II-05, a limiting wheel II-06, a limiting wheel III II-07, a joystick II-08, a tensioning upper wheel II-09, a tensioning lower wheel II-10, a power upper wheel II-11, a power lower wheel II-12, a transmission belt II II-13, a rotating wheel I II-14, a rotating wheel II-15, a rotating wheel II-16, a rotating wheel II-17, a rotating wheel II-18, a rotating wheel II-19, a rotating wheel II-20, a rotating wheel II-21, a rotating wheel II-22, a rotating wheel II-23, a rotating wheel II-24, a rotating wheel II-25, a rotating wheel II-26, a rotating wheel II-27, a rotating wheel II-28, a rotating wheel II-29 Rod Ⅱ-15, hammer Ⅱ-16, guide rod Ⅱ-17, upper cutter Ⅱ-18, lower cutter Ⅱ-19, reset spring Ⅱ-20, motor Ⅱ-21, transmission wheel 1 Ⅱ-22, transmission rod Ⅱ-23, transmission wheel 2 Ⅱ-24, transmission belt 1 Ⅱ-25, transmission wheel 3 Ⅱ-26, gear 1 Ⅱ-27, transmission wheel 3 Ⅱ-28, modulation roller Ⅱ-29 and straightening roller bracket Ⅱ-30;

[0053] The machine body Ⅱ-01 plays a supporting role, and the components or mechanisms included in the straightening assembly Ⅱ are directly or indirectly installed on the machine body Ⅱ-01; the limiting wheel 1 Ⅱ-02 and the limiting wheel 2 Ⅱ-06 are fixed on the machine body Ⅱ-01 to play a role in positioning the steel bars; the straightening wheel Ⅱ-04 is installed and fixed through the straightening wheel bracket Ⅱ-03 to play a straightening role for the steel bars; multiple straightening wheels Ⅱ-04 are divided into two groups and are staggered and installed at the vertical ends of the straightening wheel bracket Ⅱ-03. Fig.10As shown, the straightening wheel II-04 includes a straightening roller II-29 and a straightening roller bracket II-30. The straightening roller II-29 is installed on the straightening roller bracket II-30 through a bearing and a wheel axle. The straightening roller bracket II-30 is fixed on the straightening wheel bracket II-03. The straightening roller II-29 is a groove wheel, which is provided with a wheel groove for accommodating and guiding the steel bars, thereby assisting the straightening of the steel bars.

[0054] The straightening mechanism also includes a rotating straightening wheel Ⅱ-05, which is rotatably mounted on the straightening wheel bracket Ⅱ-03, and a channel for the steel bars to pass through is provided at the center of the rotating straightening wheel Ⅱ-05. The rotating straightening wheel Ⅱ-05 is a rotary rotating structure, which is connected to the motor Ⅱ-21 through a chain drive or a belt drive to obtain a rotary power.

[0055] In the direction of steel bar conveying, there are limit wheels respectively arranged upstream of the straightening mechanism, between the modulation mechanism and the tensioning mechanism, and the limit wheels form a limit channel for the steel bars to pass through. Specifically, the limit wheel upstream of the straightening mechanism is the limit wheel 1 Ⅱ-02, which guides the steel bars entering the straightening mechanism; the limit wheel 2 Ⅱ-06 and the limit wheel 3 Ⅱ-07 are located between the modulation mechanism and the tensioning mechanism, and the limit wheels 2 Ⅱ-06 and 3 Ⅱ-07 are spaced and installed on the machine body Ⅱ-01, respectively, to play a secondary straightening role for the steel bars passing through the straightening mechanism.

[0056] The tensioning upper wheel Ⅱ-09 is connected to the operating rod Ⅱ-08, and the tensioning upper wheel Ⅱ-09 is installed above the tensioning lower wheel Ⅱ-10. The operating rod Ⅱ-08 controls the distance between the tensioning upper wheel Ⅱ-09 and the tensioning lower wheel Ⅱ-10. The power wheel includes the power upper wheel Ⅱ-11 and the power lower wheel Ⅱ-12, which are installed on the machine body in pairs. The two jointly clamp and drive the steel bar to move, providing power for the feeding of the steel bar. A cut-off channel is formed between the upper cutter Ⅱ-18 and the lower cutter Ⅱ-19, which is used as a cutting position to cut the steel bar once, and a reset spring Ⅱ-20 is installed between the upper cutter Ⅱ-18 and the lower cutter Ⅱ-19. The upper cutter Ⅱ-18 and the lower cutter Ⅱ-19 are cut by approaching each other. After cutting, the reset spring Ⅱ-20 is used to reset the upper cutter Ⅱ-18 and the lower cutter Ⅱ-19, so that the subsequent steel bar to be cut can pass through. The rotating rod Ⅱ-15 is connected with the percussion hammer Ⅱ-16, and the rotating wheel Ⅱ-14 drives the rotating rod Ⅱ-15 and then drives the percussion hammer Ⅱ-16 to hit the upper cutter Ⅱ-18 to cut the steel bar for the first time; the guide rod Ⅱ-17 is installed on the lower cutter Ⅱ-19 to play a role in conveying the steel bar;

[0057] During operation, motor Ⅱ-21 provides power source, which is connected to transmission wheel 1 Ⅱ-22 through a belt, and transmits power to transmission wheel 2 Ⅱ-24 through transmission rod Ⅱ-23, and then is transmitted to transmission wheel 3 Ⅱ-26 through belt after speed change. The coaxial gear 1 Ⅱ-27 of transmission wheel 3 Ⅱ-26 rotates through speed change with power lower wheel Ⅱ-12, and the rotation of power upper wheel Ⅱ-11 and power lower wheel Ⅱ-12 drives the steel bars forward, and the bent steel bars are straightened 360 degrees when passing through straightening wheel Ⅱ-04.

[0058] The power upper wheel Ⅱ-11 and the power lower wheel Ⅱ-12 rotate to drive the continuous feeding under traction. When passing through the tensioning wheel, the friction force on the surface of the steel bar increases due to the clamping effect of the tensioning upper wheel Ⅱ-09 and the tensioning lower wheel Ⅱ-10. Under the action of traction and friction, the steel bar is stretched axially to complete the application of prestress; the rotating wheel Ⅱ-14 and the rotating rod Ⅱ-15 drive the percussion hammer Ⅱ-16 to make a circular motion, and the percussion hammer Ⅱ-16 hits the upper cutter Ⅱ-18 during the descending process to complete the cutting of the steel bar.

[0059] refer to Figure 12-14 As shown, the guide rod includes a guide rod 1 III-01 and a rod 2 III-06, the clamping mechanism includes a fixed clamping mechanism and a movable clamping mechanism, the fixed clamping mechanism includes a fixed push rod and a fixed clamping plate, a clamping portion is formed between the fixed push rod and the fixed clamping plate; the movable clamping mechanism includes a movable push rod, a movable clamping block and a movable clamping plate, a clamping portion is formed between the movable clamping block and the movable clamping plate and slides relative to the guide groove, the movable push rod is connected to the movable clamping block to drive the movable clamping block and the movable clamping plate to move, thereby adjusting the clamping portion position of the movable clamping mechanism. Specifically, the cutting assembly III includes: guide rod 1 III-01, control console III-02, push rod III-03, motor III-04, blade III-05, guide rod 2 III-06, bracket III-07, power supply III-08, PLC III-09, push rod 1 III-10, push rod 2 III-11, transverse clamping rod III-12, longitudinal feed rod III-13, stop block III-14, blade guard III-15 and adjustment rod III-16.

[0060] The guide rod III-01 of the cutting component III is connected to the guide rod II-17 of the straightening component II. The guide rod III-01 is connected to the bracket III-07 to transport the steel bars. The control console III-02 and PLC III-09 are installed on the bracket III-07 to control. The propulsion rod III-03 is connected to the blade III-05 to propel. The bracket III-07 supports the PLC control console III-02. The main shaft of the motor III-04 is connected to the blade III-05 to provide a power source.

[0061] For the fixed clamping mechanism, the fixed push rod includes push rod one III-10 and push rod two III-11, which are respectively installed on the frame, and cooperate with the fixed clamping plates corresponding to push rod one III-10 and push rod two III-11 to form a clamping part, which plays a role in positioning and clamping the steel bars. For the movable clamping mechanism, the transverse clamping rod III-12 serves as a mobile clamping block, and the longitudinal feed rod III-13 serves as a movable push rod. A mobile clamping plate is provided at the relative position of the mobile clamping block. The mobile clamping block and the mobile clamping plate can move together with the longitudinal feed rod III-13 to adjust the position of the clamping part. The transverse clamping rod III-12 can drive the mobile clamping block to move relative to the mobile clamping plate, thereby forming a clamping action. The moving directions of the transverse clamping rod III-12 and the longitudinal feed rod III-13 are distributed vertically. The block III-14 can carry the steel bars and serves as the bottom supporting position of the clamping part, which together play a role in clamping and positioning the steel bars. The end of the cutting component III is provided with a guide rod two III-06 connected to the clamping part.

[0062] like Fig.15 As shown, the outer part of the blade III-05 is partially covered with a blade guard III-15, and the blade guard III-15 is connected to the adjustment rod III-16 to serve as a protective device.

[0063] When the cutting assembly III is working, the steel bar is transported to the guide rod Ⅲ-01, and is further transported to the transverse clamping rod Ⅲ-12 and the longitudinal feeding rod Ⅲ-13 under the guidance of the guide rod Ⅲ-01. The product of the feeding speed of the steel bar and the up and down movement time of the blade is the cutting length of the steel bar. When the steel bar reaches the predetermined length, the push rod Ⅲ-10 and the push rod Ⅲ-11 move forward at the same time, and clamp the steel bar with the transverse clamping rod Ⅲ-12 at the same time, playing a positioning and clamping role. Under the control of PLCⅢ-09, the push rod Ⅲ-03 pushes the blade Ⅲ-05 to cut the steel bar for the second time. After the cutting is completed, the steel bar continues to be fed under the guidance of the guide rod Ⅲ-06.

[0064] For controlling the length of the steel bar segment, the time interval from the last completion of the tapping to the start of the next rotation of the rotating rod II-15 (the time to complete one tapping) is calculated. The length of the steel bar fed during this period is the slice thickness at this time. Therefore, the purpose of controlling the slice thickness is achieved by controlling the conveying speed of the steel bar feed.

[0065] Cut-off time interval calculation:

[0066] Figure 7 The transmission mechanism diagram of the straightening and stretching system is shown in the figure. The motor Ⅱ-21 is connected to the transmission wheel 1 Ⅱ-22 through a synchronous pulley. The diameters of the two wheels are equal. The torque is transmitted to the transmission wheel 2 Ⅱ-24 under the action of the transmission shaft Ⅱ-23. The transmission wheel 2 Ⅱ-24 is decelerated through the transmission belt 1 Ⅱ-25 and transmits a larger torque to the transmission wheel 3 Ⅱ-26. The radius of the transmission wheel 1 Ⅱ-22 is r 22 Radius r of transmission wheel II-24 24Equal, ω 22 With ω 24 is 1:1. The speed of motor II-21 is Z 21 .

[0067] The relationship between the rotation speed z and the angular velocity ω is:

[0068]

[0069] Z 21 -The speed of the motor is z revolutions per minute (RPM)

[0070] The radius of transmission wheel 2 Ⅱ-24 is half of the radius of transmission wheel 3 Ⅱ-26. The angular velocity of transmission wheel 3 Ⅱ-26 is ω 26 ω 21 half.

[0071] Therefore, the time it takes for hammer II-16 to complete one circular motion is:

[0072]

[0073] T-Percussion Hammer II-16 The time it takes for one circular motion

[0074] In this time T, the conveying distance of the steel bar is the length of the steel bar, which can be obtained by multiplying the conveying speed by the time:

[0075] The specific values ​​are:

[0076] L=v×T

[0077] Where, L is the length of the steel bar; v is the conveying speed.

[0078] Example 2

[0079] In another typical embodiment of the present invention, Figure 1-Figure 15 As shown, a method for uncoiling and cutting steel bars is provided, using the uncoiling and cutting device for steel bars as in Example 1.

[0080] A steel bar uncoiling and cutting method, comprising:

[0081] The steel bar coil Ⅰ-02 is installed on the reel support Ⅰ, and one end of the steel bar on the steel bar coil Ⅰ-02 is sent into the straightening component Ⅱ;

[0082] After the steel bar passes through the straightening mechanism, it cooperates with the tensioning wheel. Driven by the tensioning wheel, the steel bar coil gradually releases the steel bar wound thereon;

[0083] The steel bar is initially straightened by the straightening wheel Ⅱ-04, and the straightened steel bar enters the tensioning mechanism for stretching and straightening, and the straightened steel bar is cut once by the cutting mechanism;

[0084] The cut steel bars are fed into the cutting assembly III, and after being clamped and stabilized by the clamping mechanism according to the required length, they are cut a second time using the cutting mechanism.

[0085] Guide rod II III-06 receives the steel bars output by the cutting mechanism, clamps them after adjusting their positions, and then cuts them to obtain the required length.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel bar uncoiling and cutting device, characterized in that: include: A reel support, used to carry the rebar coil; The straightening assembly comprises a straightening mechanism, a tensioning mechanism and a cutting mechanism which are sequentially distributed along the conveying direction of the steel bars. The straightening mechanism is provided with a plurality of straightening wheels which are spaced apart from each other. The tensioning mechanism comprises tensioning wheels which are arranged in pairs, and a tensioning channel for the steel bars to pass through is formed between the tensioning wheels. The cutting mechanism comprises an upper cutting knife and a lower cutting knife which match each other, and a cutting channel is formed between the two. The cutting assembly includes a guide rod and a clamping mechanism and a cutting mechanism arranged along the guide rod. The guide rod is provided with a guide groove for receiving the steel bars output by the straightening assembly, the clamping mechanism is provided with a clamping part for accommodating the steel bars, and the cutting mechanism is provided with a blade. When the blade is driven by the propulsion rod, it cuts the steel bars clamped by the clamping part.

2. The steel bar uncoiling and cutting device according to claim 1, characterized in that: The straightening wheels are installed on the straightening wheel bracket, and the plurality of straightening wheels are divided into two groups and are staggeredly installed at the vertical ends of the straightening wheel bracket.

3. The steel bar uncoiling and cutting device according to claim 2, characterized in that: The straightening mechanism also includes a rotating straightening wheel, which is rotatably mounted on a straightening wheel bracket, and a channel for the steel bars to pass through is arranged at the center of the rotating straightening wheel.

4. The steel bar uncoiling and cutting device according to claim 1, characterized in that: In the direction of steel bar conveying, limiting wheels are respectively arranged upstream of the straightening mechanism, between the modulation mechanism and the tensioning mechanism, and the limiting wheels form limiting channels for the steel bars to pass through.

5. The steel bar uncoiling and cutting device according to claim 1, characterized in that: A return spring is installed between the upper cutter and the lower cutter, the upper cutter is abutted with a knock hammer, and the rotating rod is connected to the knock hammer to drive the knock hammer to push the upper cutter to move, so that the upper cutter and the lower cutter form a shearing action.

6. The steel bar uncoiling and cutting device according to claim 5, characterized in that: The downstream of the cut-off mechanism is connected with a guide rod.

7. The steel bar uncoiling and cutting device according to claim 1, characterized in that: The clamping mechanism includes a fixed clamping mechanism and a movable clamping mechanism. The fixed clamping mechanism includes a fixed push rod and a fixed clamping plate, and a clamping portion is formed between the fixed push rod and the fixed clamping plate; the movable clamping mechanism includes a movable push rod, a movable clamping block and a movable clamping plate, and a clamping portion is formed between the movable clamping block and the movable clamping plate and slides relative to the guide groove. The movable push rod is connected to the movable clamping block to drive the movable clamping block and the movable clamping plate to move and adjust the clamping portion position of the movable clamping mechanism.

8. The steel bar uncoiling and cutting device according to claim 7, characterized in that: The cutting mechanism further comprises a driving element, an output end of which is connected to the blade, and a pushing rod is connected to the driving element to drive the driving element and the blade to move relative to the clamping part.

9. A method for uncoiling and cutting a steel bar, using the uncoiling and cutting device for steel bars as claimed in any one of claims 1 to 8, characterized in that: include: The steel bar coil is installed on the reel support, and one end of the steel bar on the steel bar coil is sent into the straightening assembly; After the steel bar passes through the straightening mechanism, it cooperates with the tensioning wheel. Under the drive of the tensioning wheel, the steel bar coil gradually releases the steel bar wound thereon; the steel bar is initially straightened under the action of the straightening wheel, and the straightened steel bar enters the tensioning mechanism for stretching and straightening, and the straightened steel bar is cut once by the cutting mechanism; The cut steel bars are fed into the cutting assembly, clamped and stabilized by the clamping mechanism according to the required length, and then cut for the second time by the cutting mechanism.

10. The steel bar uncoiling and cutting method according to claim 9, characterized in that: The guide rod receives the steel bars output by the cutting mechanism, clamps the steel bars after adjusting their positions, and then cuts the steel bars to obtain the required length.

Images