A steel bar cutting device for construction engineering construction

Abstract

The present invention relates to the technical field of steel bar cutting, and specifically relates to a steel bar cutting device for construction engineering construction, which includes a frame. Along the steel bar feeding direction on the bracket, a heating and guiding component, a rotatable shaping rotary frame, a distance adjusting mechanism, and a cutting and blanking mechanism are sequentially installed. An inner wall of the shaping rotary frame is provided with a reciprocating frame that can reciprocate within the shaping rotary frame. Two straightening rollers are rotatably installed on the reciprocating frame. Two symmetrically arranged and reciprocatingly adjustable alignment frames are drivingly connected to the distance adjusting mechanism, and a reciprocating stroke adjusting component is installed on the distance adjusting mechanism. The beneficial effects of the present invention are as follows: Through the rotatable shaping rotary frame, the reciprocating straightening rollers, and in cooperation with structures such as a differential shaft, the present invention realizes 360° multi-directional shaping and bending of the steel bar. During the rotation of the shaping rotary frame, the eccentric wheel on the convex shaft drives the reciprocating frame and the straightening rollers to perform multi-directional bending on the steel bar, fully releasing the internal stress of the steel bar after unwinding.

Description

[0001] The present invention relates to the technical field of steel bar cutting, and particularly to a steel bar cutting device for construction engineering construction. Background Art

[0002] In the prior art, a patent document with the publication number CN118616612B discloses a steel bar cutting device for construction engineering construction. The above device adopts a pre-action principle, sets up a continuous fixed-length cutting component, pre-sets the cutting length, and uses the cut-off button as the cutting node, which improves the automation level and realizes the continuity of the fixed-length cutting of steel bars. Moreover, when cutting, both ends of the steel bar are clamped to ensure the stability of the steel bar cutting. However, the above device has the following technical problems when performing continuous fixed-length cutting and feeding of steel bars:

[0003] 1. Insufficient stress release: There are major defects in the stress release link before the cutting and feeding of steel bars in the prior art. Most devices can only achieve simple one-way or limited-angle bending operations and cannot perform 360° multi-directional shaping and bending of steel bars like the present invention. This results in the internal stress of the steel bar not being fully released after uncoiling, and the residual stress will cause the deformation of the steel bar during subsequent processing and use, affecting its bonding effect with concrete;

[0004] 2. Single straightening method: Most existing straightening devices use straightening rollers at fixed positions and can only straighten from the local outer circumference of the steel bar, unable to achieve 360° cyclic straightening. This single straightening method leaves dead angles in the straightening of the steel bar;

[0005] 3. Non-adjustable straightening parameters: When facing steel bars with different outer diameters, it is difficult for the existing device to flexibly adjust the distance between the straightening rollers and the straightening stroke;

[0006] 4. Low overall processing efficiency: Due to the deficiencies in the stress release and straightening functions of the prior art, the steel bar needs to be reworked multiple times, increasing the processing time and cost;

[0007] Based on this, the present invention provides a steel bar cutting device for construction engineering construction to solve the problems raised in the above background art. Summary of the Invention

[0008] In view of the technical problems existing in the prior art, the present invention provides a steel bar cutting device for construction engineering construction to solve the problems of insufficient stress release, single straightening method, non-adjustable straightening parameters, and low overall processing efficiency of the existing device.

[0009] The technical solution of the present invention to solve the above technical problems is as follows: A steel bar cutting device for construction engineering construction includes a frame. Along the steel bar feeding direction on the frame, a heating and guiding component, a rotatable shaping rotary frame, a distance adjusting mechanism, and a cutting and blanking mechanism are sequentially installed. An inner wall of the shaping rotary frame is provided with a reciprocating frame that can reciprocate within the shaping rotary frame. Two straightening rollers are rotatably installed on the reciprocating frame. Two symmetrically arranged and reciprocatingly adjustable straightening frames are drivingly connected to the distance adjusting mechanism. A reciprocating stroke adjusting component is installed on the distance adjusting mechanism. The reciprocating stroke adjusting component is used to adjust the reciprocating stroke of the straightening frames. A transmission pressure ring is rotatably installed on an inner wall of each of the two straightening frames. The transmission pressure rings are driven to rotate by the distance adjusting mechanism. A group of straightening modules arranged in a circumferential array are installed between the two transmission pressure rings;

[0010] The straightening module includes a pressing frame. A connecting rod is hinged between the pressing frame and each of the two transmission pressure rings. A straightening roller is rotatably installed on an inner wall of the pressing frame;

[0011] The cutting and blanking mechanism is used for fixed-length cutting and blanking of steel bars.

[0012] The beneficial effects of the present invention are:

[0013] 1. The present invention realizes 360° multi-directional shaping and bending of steel bars through a rotatable shaping rotary frame, reciprocating straightening rollers, and a differential shaft structure. During the rotation of the shaping rotary frame, the eccentric wheel on the convex shaft drives the reciprocating frame and the straightening rollers to perform multi-directional bending on the steel bar, fully releasing the internal stress of the steel bar after unwinding, effectively avoiding the deformation of the steel bar caused by residual stress in subsequent processing and use, significantly improving the bonding effect between the steel bar and concrete, and fundamentally ensuring the stability and safety of the building structure.

[0014] 2. The present invention is provided with straightening rollers that can rotate in a 360° circular revolution, which can straighten the steel bar from all directions on its outer circumference. The distance adjusting mechanism can adjust the distance between the two straightening frames, thereby adjusting the distance between the straightening rollers and the steel bar. The stroke adjusting component can flexibly adjust the reciprocating stroke of the straightening frames according to the outer diameter of the steel bar, and further limit the reciprocating displacement stroke and the maximum straightening distance of the straightening rollers, meeting the straightening requirements of steel bars with different outer diameters, greatly improving the straightening efficiency and strength, and solving the problems of single straightening method in traditional devices, mostly using straightening rollers at fixed positions, which can only straighten from the local outer circumference of the steel bar, having straightening dead corners, and the straightening parameters being non-adjustable.

[0015] 3. Through efficient stress release and precise straightening, the present invention greatly improves the one-time processing forming rate of steel bars, reduces the number of reworks, significantly shortens the processing time, reduces the labor and material costs. The cutting and blanking mechanism can complete precise fixed-length cutting and construction blanking, further improving the accuracy and practicality of the overall processing, and improving the production efficiency.

[0016] 4. The heating and guiding component of the present invention pre-heats the steel bars. The temperature of the induction heating coil is between 200°C and 400°C, which can reduce the hardness of the steel bars and facilitate subsequent processing. The electric heating rods installed inside the shaping rollers and straightening rollers have a heating temperature of 250°C - 400°C, further softening the steel bars and making the stress release and straightening operations more efficient.

[0017] 5. The present invention optimizes the transmission structure. The cross-sections of the first square shaft, the second square shaft, the first square groove, and the second square groove are all regular hexagons, ensuring stable power transmission, avoiding relative rotation, and ensuring the accurate operation of each component. The semi-conical surface transmission column and the driven bevel wheel are provided with friction patterns, and cooperate with the torsion spring to achieve stable reciprocating displacement of the straightening frame. These designs improve the reliability and stability of the transmission, ensure the efficient and accurate operation of the device, and enhance the overall performance.

[0018] Based on the above technical solutions, the present invention can be further improved as follows.

[0019] Further, the heating and guiding component includes a material guiding pipe installed on the frame. An induction heating coil is sleeved on the material guiding pipe. The temperature heating range of the induction heating coil is 200°C - 400°C. Two guiding frames are installed on the frame, and a set of first guiding wheels for guiding the steel bar feeding are rotatably installed on each of the two guiding frames.

[0020] The beneficial effects of adopting the above solution are as follows: Before use, the steel bars are sequentially passed through the material guiding pipe and the two sets of first guiding wheels. When the steel bars are inside the material guiding pipe, the induction heating coil is energized to generate heat, and the steel bars are heated through heat transfer to reach a temperature conducive to subsequent processing. In the range of 200°C - 400°C, this temperature can reduce the hardness of the steel bars and facilitate subsequent process operations. The two sets of first guiding wheels, on the one hand, play a guiding role when feeding the steel bars, ensuring that the steel bars can move stably along the central axis of the device and avoiding the influence of subsequent processing accuracy caused by skewed feeding. On the other hand, they reduce the friction loss between the steel bars and other components and extend the service life of the components. In the prior art, some blanking devices lack pre-heating treatment for steel bars. When facing steel bars with a large degree of bending, the subsequent shaping and straightening are difficult and the effect is not good. This solution effectively solves this problem through the heating and guiding component and improves the processing adaptability to steel bars in different states.

[0021] Furthermore, the distance adjustment mechanism includes a servo motor installed on the frame and a bidirectional lead screw rotatably connected to the frame. A torsion spring is fixedly arranged at the rotational connection of the bidirectional lead screw and the frame. The bidirectional lead screw is driven by the servo motor and reciprocally rotates. A first square shaft driven by the servo motor is rotatably installed on the frame. A hollow shaft is rotatably installed on the inner wall of a straightening frame. A first square groove with both ends open and slidably connected to the first square shaft is fixedly formed inside the hollow shaft. A transmission gear is installed on the hollow shaft. A passive gear ring meshing with the transmission gear is fixedly installed on a transmission pressure ring.

[0022] The beneficial effects of adopting the above scheme are as follows: During use, the servo motor starts and drives the bidirectional lead screw to reciprocally rotate. Due to the thread characteristics of the bidirectional lead screw, the two straightening frames will perform reciprocating movements of approaching or separating in opposite directions along the lead screw, thereby adjusting the distance between the two straightening frames. After the distance between the two straightening frames changes, the distance between the straightening rollers relative to the steel bar is then adjusted.

[0023] When cutting the steel bar, according to the outer diameter of the steel bar, the reciprocating stroke of the two straightening frames is adjusted by setting the stroke adjustment component. Through the reciprocating displacement stroke adjustment of the two straightening frames, the reciprocating displacement stroke of the straightening rollers and the maximum straightening distance of the straightening rollers are limited, thereby enabling this device to meet the straightening requirements of steel bars with different outer diameters.

[0024] Meanwhile, the servo motor also drives the first square shaft to rotate. The first square shaft drives the hollow shaft to rotate through the sliding connection with the first square groove inside the hollow shaft, and then drives the transmission gear to rotate. Since the transmission gear meshes with the passive gear ring, the transmission pressure ring rotates accordingly. After the transmission pressure ring rotates, the 360° cyclic revolution rotation of the straightening rollers during the straightening process is realized. Through the 360° cyclic revolution rotation of multiple straightening rollers, the 360° cyclic straightening of the steel bar is achieved from the outer circumference of the steel bar, thereby reducing the straightening dead angle of the steel bar and improving the straightening efficiency and straightening strength of the steel bar.

[0025] Furthermore, the stroke adjustment component includes a second square shaft installed at the output shaft end of the servo motor, a tensioning frame slidably connected to the frame, and a linear transmission module installed on the frame. An adjustment seat is drivingly installed on the linear transmission module. A semi-cone surface transmission column is rotatably installed on the adjustment seat. A second square groove slidably connected to the second square shaft is fixedly formed at the axis position of the semi-cone surface transmission column. A tensioning spring limited by the frame is installed on the bottom surface of the tensioning frame. A tensioning shaft is rotatably installed on the tensioning frame. A driven bevel wheel fitting the semi-cone surface transmission column is installed at the tail of the tensioning shaft. An elastic transmission belt is drivingly connected to the tensioning shaft. The elastic transmission belt is respectively drivingly connected to the bidirectional lead screw and the first square shaft.

[0026] The beneficial effects of adopting the above solution are as follows: Before the servo motor operates, according to the outer diameter of the steel bar to be cut, by driving the linear transmission module, the position of the adjustment seat is adjusted, and the position of the semi-cone surface transmission column relative to the driven bevel gear and the transmission stroke of the semi-cone surface transmission column on the driven bevel gear are adjusted;

[0027] By limiting and adjusting the transmission stroke, the straightening roller can be made to meet the straightening requirements of steel bars with different outer diameters;

[0028] When the servo motor operates, the second square shaft at the output shaft end rotates accordingly, and then drives the tensioning shaft to rotate. The tensioning shaft is respectively connected to the bidirectional lead screw and the first square shaft through an elastic transmission belt to adjust the transmission ratio of the bidirectional lead screw and the first square shaft, thereby adjusting the reciprocating stroke of the straightening frame;

[0029] The elastic transmission belt is made of elastic rubber material. When the transmission stroke of the semi-cone surface transmission column on the driven bevel gear changes, the elastic transmission belt can continuously drive the bidirectional lead screw and the first square shaft;

[0030] When the position of the semi-cone surface transmission column changes, the position of the tensioning frame on the machine frame changes accordingly;

[0031] Through the stroke adjustment component in this solution, the stroke of the straightening frame can be flexibly adjusted according to the outer diameter of the steel bar, improving the straightening effect and the versatility of the device.

[0032] Furthermore, a transmission cone surface and a transmission notch are fixedly arranged on the semi-cone surface transmission column. The central angles corresponding to the transmission cone surface and the transmission notch are both 180°, and friction lines are arranged on both the transmission cone surface and the driven bevel gear.

[0033] The beneficial effects of adopting the above further solution are as follows: During use, the 180° central angle transmission cone surface on the semi-cone surface transmission column fits with the driven bevel gear. When the position of the semi-cone surface transmission column changes, the contact position between the transmission cone surface and the driven bevel gear changes. Since friction lines are arranged on both the transmission cone surface and the driven bevel gear, the friction force between the two is increased, ensuring stable transmission. The driven bevel gear can follow the rotation of the semi-cone surface transmission column more accurately, thereby realizing precise control of the rotation of the tensioning shaft.

[0034] When the transmission cone surface and the driven bevel gear are not in contact, under the action of the torsion spring, the bidirectional lead screw automatically resets and rotates, thereby realizing the reciprocating displacement of the straightening frame;

[0035] Furthermore, the cross-sections of the first square shaft, the second square shaft, the first square groove, and the second square groove are all regular hexagons.

[0036] The beneficial effect of adopting the above scheme is that when in use, the first square shaft with a regular hexagonal cross-section cooperates with the first square groove, and the second square shaft cooperates with the second square groove, which can ensure the stable transmission of power during the transmission process, and no relative rotation occurs, ensuring that the first square shaft can accurately drive the hollow shaft to rotate, and the second square shaft drives the semi-conical transmission column on the adjustment seat to rotate synchronously. In the prior art, if the shape of the shaft and the groove is unreasonable, power transmission interruption or delay is likely to occur, affecting the operating efficiency and straightening accuracy of the device. This scheme improves the reliability and stability of the transmission through this special shape design, thereby improving the overall performance of the device.

[0037] The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with toothed rails with toothed rails.

[0038] The beneficial effects of the above scheme are as follows: when the servo motor drives the first square shaft to rotate, the first square shaft drives the upper coupling shaft to rotate through the toothed synchronous belt, the first bevel gear on the upper coupling shaft meshes with the first bevel gear on the lower coupling shaft to rotate the lower coupling shaft, and the transmission bevel gear at the bottom end of the lower coupling shaft is connected with the two driven bevel gear rings on the shaping rotating frame to drive the shaping rotating frame to rotate;

[0039] At the same time, the active bevel gear ring is connected with the transmission component on the cam shaft to drive the cam shaft to rotate, and the eccentric wheel on the cam shaft is connected with the vibration transmission wheel on the reciprocating frame to make the reciprocating frame reciprocate in the shaping rotating frame. In the prior art, the driving structure of the shaping rotating frame and the reciprocating frame is complex and the transmission efficiency is low. This solution simplifies the power transmission path and improves the transmission efficiency through the transmission structure, so that the rotation of the shaping rotating frame and the movement of the reciprocating frame can be coordinated.

[0040] In this process, the reciprocating shaping rollers in the shaping rotary frame play a key role. They can bend the steel bars in multiple directions and release the stress when the steel bars are released from the steel bar unwinding device, so as to better shape the steel bars in the future, improve the shaping quality of the steel bars, and lay a good foundation for subsequent straightening and other processes.

[0041] Furthermore, a differential shaft is rotatably mounted on the shaping rotating frame, a passive bevel gear is installed at the bottom of the differential shaft and is transmission-connected to the active bevel gear ring, a second bevel gear is installed on both the differential shaft and the cam shaft, the two second bevel gears are meshed with each other, and the two driven bevel gear rings are respectively arranged on both sides of the transmission bevel gear.

[0042] The beneficial effect of adopting the above further solution is that when the active bevel gear ring rotates, the passive bevel gear at the bottom of the differential shaft is driven to rotate the differential shaft, and the differential shaft and the second bevel gear on the cam shaft are meshed with each other to achieve differential transmission between the two. Since the two driven bevel gear rings are respectively arranged on both sides of the transmission bevel gear, the shaping rotating frame can achieve more flexible speed adjustment and motion control during the rotation process.

[0043] The shaping rotating frame can be rotated to achieve 360° multi-directional shaping and bending of the steel bar, so that the stress released by the steel bar can be fully released in multiple directions;

[0044] Furthermore, the cutting and unloading mechanism includes a cutting frame and a tool holder, a group of second guide wheels for guiding the steel bar limit position are installed on the cutting frame, a group of cutting push rods are installed between the cutting frame and the tool holder, a cutting knife is installed on the bottom surface of the tool holder, and a limit frame for limiting the steel bar position is installed on the cutting frame and at a position corresponding to the position directly below the cutting knife, and a knife groove adapted to the cutting knife is fixedly opened on the limit frame.

[0045] The beneficial effect of adopting the above scheme is as follows: after the steel bar has passed the previous processing steps, it enters the cutting frame, and the second guide wheel on the cutting frame limits and guides the steel bar to ensure that the steel bar is in the correct cutting position. The cutting push rod is started to push the knife frame to move downward, and the cutting knife on the bottom of the knife frame drops accordingly to cut the steel bar. The limit frame limits the steel bar during cutting to prevent the steel bar from shaking. The knife groove is adapted to the cutting knife to make the cutting more accurate.

[0046] In the prior art, the cutting and unloading device often has problems such as large cutting position deviation and uneven steel bar cut end surface. The present solution realizes the precise length cutting of steel bars and the construction unloading after the fixed-length steel bars are cut through the cutting and unloading mechanism.

[0047] Furthermore, each of the correcting rollers and each of the straightening rollers is internally installed with an electric heating rod, the heating temperature range of the electric heating rod is 250° C.-400° C., and the correcting rollers and the straightening rollers are both made of chrome twelve.

[0048] The beneficial effects of adopting the above solution are as follows: During use, the electric heating rods inside the shaping roller and the straightening roller are energized to generate heat, raising the temperature of the roller body to 250°C - 550°C. This temperature range further softens the steel bars. For the shaping roller, when bending the steel bars in multiple directions to release stress, the softened steel bars are more likely to deform, enabling more efficient stress release operations. For the straightening roller, the softened steel bars are more convenient to straighten, facilitating the shaping and straightening operations of the roller body on the steel bars.

[0049] The roller body made of chromium twelve material has high hardness and wear resistance, and is not easily deformed and worn in a high-temperature working environment, extending the service life of the roller body. In the prior art, some roller bodies do not have a heating function and the materials are not heat-resistant, resulting in poor processing effects on steel bars and frequent replacement of the roller body. Through this setting in this solution, the processing effect of steel bars is significantly improved, and the equipment maintenance cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic diagram of the overall structure of a steel bar cutting device for construction engineering construction according to the present invention;

[0051] Figure 2 For the present invention Figure 1 front view structure schematic diagram;

[0052] Figure 3 It is a schematic diagram of the structure of the tool rest and the limit frame of the present invention;

[0053] Figure 4 It is a schematic diagram of the structure of the first guide wheel and the guide frame of the present invention;

[0054] Figure 5 It is a schematic diagram of the structure of the linear drive module and the straightening frame of the present invention;

[0055] Figure 6 For the present invention Figure 5 partial enlarged structure schematic diagram at A in;

[0056] Figure 7 It is a schematic diagram of the structure of the upper coupling and the shaping rotating frame of the present invention;

[0057] Figure 8 For the present invention Figure 7 partial enlarged structure schematic diagram at B in;

[0058] Figure 9 It is a schematic diagram of the structure of the upper coupling and the passive gear ring of the present invention;

[0059] Figure 10 For the present invention Figure 9 partial enlarged structure schematic diagram at C in;

[0060] Figure 11This is a schematic structural diagram of the torsion spring and the tensioning frame of the present invention.

[0061] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0062] 1. Frame; 2. Shaping rotary frame; 3. Reciprocating frame; 4. Orthopedic roller; 5. Straightening frame; 6. Transmission pressure ring; 7. Pressing frame; 8. Connecting rod; 9. Straightening roller; 10. Steel bar; 11. Material guiding pipe; 12. Induction heating coil; 13. Guiding frame; 14. First guiding wheel; 15. Servo motor; 16. Bidirectional lead screw; 17. Torsion spring; 18. Hollow shaft; 19. First square shaft; 20. Transmission gear; 21. Passive gear ring; 22. Second square shaft; 23. Tensioning frame; 24. Linear transmission module; 25. Adjusting seat; 26. Semi-conical surface transmission column; 27. Tensioning spring; 28. Tensioning shaft; 29. Driven bevel wheel; 30. Elastic transmission belt; 31. Eccentric wheel; 32. Vibration transmission wheel; 33. Return spring; 34. Differential shaft; 35. Cutting frame; 36. Tool rest; 37. Second guiding wheel; 38. Cutting push rod; 39. Cutting tool; 40. Limit frame; 41. Lower coupling; 42. Upper coupling; 43. Active bevel gear ring; 44. Convex shaft. Specific embodiments

[0063] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0064] The present invention provides the following preferred embodiments

[0065] As Figure 1-11 shown, a steel bar cutting device for construction engineering construction includes a frame 1. Along the feeding direction of the steel bar 10, a heating guiding component, a rotatable shaping rotary frame 2, a distance adjusting mechanism, and a cutting and blanking mechanism are sequentially installed on the frame.

[0066] The heating guiding component includes a material guiding pipe 11 installed on the frame 1. An induction heating coil 12 is sleeved on the material guiding pipe 11. The heating temperature of the induction heating coil 12 is 400 °C. Two guiding frames 13 are installed on the frame 1. A set of first guiding wheels 14 for guiding the feeding of the steel bar 10 are rotatably installed on each of the two guiding frames 13.

[0067] Before use, the steel bar 10 is sequentially passed through the material guiding pipe 11 and two groups of first guiding wheels 14. When the steel bar 10 is inside the material guiding pipe 11, the induction heating coil 12 is energized to generate heat, and the steel bar 10 is heated through heat transfer to make it reach a temperature beneficial for subsequent processing. Within 400°C, this temperature can reduce the hardness of the steel bar 10 and facilitate the operation of subsequent processes. The two groups of first guiding wheels 14, on the one hand, play a guiding role when the steel bar 10 is fed, ensuring that the steel bar 10 can move forward stably along the central axis of the device and avoiding the influence of subsequent processing accuracy caused by skewed feeding. On the other hand, they reduce the frictional loss between the steel bar 10 and other components and extend the service life of the components. In the prior art, some blanking devices lack pre-heating treatment for the steel bar 10. When facing steel bars 10 with a large bending degree, the subsequent shaping and straightening are difficult and the effect is not good. This solution effectively solves this problem by heating and guiding components and improves the processing adaptability to steel bars 10 in different states.

[0068] On the inner wall of the shaping rotary frame 2, a reciprocating frame 3 that can reciprocate within the shaping rotary frame 2 is installed. Two straightening rollers 4 are rotatably installed on the reciprocating frame 3. Two symmetrically arranged and reciprocatingly adjustable straightening frames 5 are drivingly connected on the distance adjusting mechanism. A reciprocating stroke adjusting component is installed on the distance adjusting mechanism and is used to adjust the reciprocating stroke of the straightening frame 5. On the inner walls of the two straightening frames 5, a driving pressure ring 6 is rotatably installed. The driving pressure ring 6 is driven to rotate by the distance adjusting mechanism. A group of straightening modules arranged in a circumferential array are installed between the two driving pressure rings 6;

[0069] The straightening module includes a pressing frame 7. A connecting rod 8 is hinged between the pressing frame 7 and the two driving pressure rings 6. A straightening roller 9 is rotatably installed on the inner wall of the pressing frame 7;

[0070] The cutting and blanking mechanism is used for the fixed-length cutting and blanking of the steel bar 10.

[0071] The distance adjusting mechanism includes a servo motor 15 installed on the frame 1 and a bidirectional lead screw 16 rotatably connected to the frame 1. A torsion spring 17 is fixedly arranged at the rotational connection of the bidirectional lead screw 16 and the frame 1. The bidirectional lead screw 16 is driven by the servo motor 15 and reciprocally rotates. A first square shaft 19 driven by the servo motor 15 is rotatably installed on the frame 1. A hollow shaft 18 is rotatably installed on the inner wall of a straightening frame 5. A first square groove with both ends open and slidably connected to the first square shaft 19 is fixedly opened inside the hollow shaft 18. A transmission gear 20 is installed on the hollow shaft 18. A passive gear ring 21 meshing with the transmission gear 20 is fixedly installed on a driving pressure ring 6.

[0072] During use, the servo motor 15 starts, driving the bidirectional lead screw 16 to rotate reciprocally. Due to the thread characteristics of the bidirectional lead screw 16, the two straightening frames 5 will reciprocate closer to or farther from each other along the lead screw, thereby adjusting the distance between the two straightening frames 5. After the distance between the two straightening frames 5 changes, the distance between the straightening rollers 9 and the steel bar 10 is then adjusted;

[0073] When the steel bar 10 is cut, according to the outer diameter of the steel bar 10, the reciprocating stroke of the two straightening frames 5 is adjusted by setting the stroke adjustment component. Through the adjustment of the reciprocating displacement stroke of the two straightening frames 5, the reciprocating displacement stroke of the straightening rollers 9 and the maximum straightening distance of the straightening rollers 9 are limited, and then this device is made suitable for the straightening requirements of steel bars 10 with different outer diameters;

[0074] At the same time, the servo motor 15 also drives the first square shaft 19 to rotate. The first square shaft 19 drives the hollow shaft 18 to rotate through the sliding connection with the first square groove in the hollow shaft 18, and then the transmission gear 20 rotates. Since the transmission gear 20 meshes with the passive gear ring 21, the transmission pressure ring 6 rotates accordingly. After the transmission pressure ring 6 rotates, the 360° cyclic revolution rotation of the straightening rollers 9 during the straightening process is realized. Through the 360° cyclic revolution rotation of multiple straightening rollers 9, the 360° cyclic straightening of the steel bar 10 is achieved from the outer circumference of the steel bar 10, thereby reducing the straightening dead angle of the steel bar 10 and improving the straightening efficiency and straightening strength of the steel bar 10.

[0075] The stroke adjustment component includes a second square shaft 22 installed at the output shaft end of the servo motor 15, a tensioning frame 23 slidably connected to the frame 1, a linear transmission module 24 installed on the frame 1. An adjustment seat 25 is drivingly installed on the linear transmission module 24. A semi-cone surface transmission column 26 is rotatably installed on the adjustment seat 25. A second square groove for slidably connecting with the second square shaft 22 is fixedly opened at the axial position of the semi-cone surface transmission column 26. A tensioning spring 27 limited by the frame 1 is installed on the bottom surface of the tensioning frame 23. A tensioning shaft 28 is rotatably installed on the tensioning frame 23. A driven bevel wheel 29 that fits with the semi-cone surface transmission column 26 is installed at the tail of the tensioning shaft 28. An elastic transmission belt 30 is drivingly connected to the tensioning shaft 28. The elastic transmission belt 30 is respectively drivingly connected to the bidirectional lead screw 16 and the first square shaft 19.

[0076] Before the servo motor 15 operates, according to the outer diameter of the steel bar 10 to be cut, the position of the adjustment seat 25 is adjusted by driving the linear transmission module 24, and the position of the semi-cone surface transmission column 26 relative to the driven bevel wheel 29 and the transmission stroke of the semi-cone surface transmission column 26 on the driven bevel wheel 29 are adjusted;

[0077] Through the limitation and adjustment of the transmission stroke, the straightening rollers 9 can then be made suitable for the straightening requirements of steel bars 10 with different outer diameters;

[0078] When the servo motor 15 is running, the second square shaft 22 at the output shaft end rotates accordingly, thereby driving the tensioning shaft 28 to rotate. The tensioning shaft 28 is respectively connected to the bidirectional screw rod 16 and the first square shaft 19 through the elastic transmission belt 30, so as to adjust the transmission ratio of the bidirectional screw rod 16 and the first square shaft 19, thereby adjusting the reciprocating stroke of the straightening frame 5;

[0079] The elastic transmission belt 30 is made of elastic rubber, so that during the change of the transmission stroke of the semi-conical transmission column 26 to the driven bevel wheel 29, the elastic transmission belt 30 can continuously drive the bidirectional screw rod 16 and the first square shaft 19;

[0080] When the position of the semi-conical transmission column 26 changes, the position of the tensioning frame 23 on the frame 1 changes accordingly;

[0081] This solution uses a stroke adjustment component to flexibly adjust the stroke of the straightening frame 5 according to the outer diameter of the steel bar 10, thereby improving the straightening effect and the versatility of the device.

[0082] A transmission cone surface and a transmission notch are fixedly provided on the semi-conical transmission column 26 , and the central angles of the transmission cone surface and the transmission notch are both 180°. The transmission cone surface and the driven bevel wheel 29 are both provided with friction patterns.

[0083] When in use, the transmission cone surface with a central angle of 180° on the semi-conical transmission column 26 fits with the driven bevel wheel 29. When the position of the semi-conical transmission column 26 changes, the contact position between the transmission cone surface and the driven bevel wheel 29 changes. Since friction patterns are provided on both the transmission cone surface and the driven bevel wheel 29, the friction force between the two is increased, ensuring transmission stability. The driven bevel wheel 29 can more accurately follow the rotation of the semi-conical transmission column 26, thereby realizing precise control of the rotation of the tensioning shaft 28.

[0084] When the transmission cone surface is out of contact with the driven bevel wheel 29, under the action of the torsion spring 17, the bidirectional screw rod 16 automatically resets and rotates, thereby realizing the reciprocating displacement of the straightening frame 5;

[0085] The cross sections of the first square axis 19 , the second square axis 22 , the first square groove and the second square groove are all regular hexagons.

[0086] When in use, the first square shaft 19 with a regular hexagonal cross-section cooperates with the first square groove, and the second square shaft 22 cooperates with the second square groove, which can ensure the stable transmission of power during the transmission process without relative rotation, ensuring that the first square shaft 19 can accurately drive the hollow shaft 18 to rotate, and the second square shaft 22 drives the semi-conical transmission column 26 on the adjustment seat 25 to rotate synchronously. In the prior art, if the shape of the shaft and the groove is unreasonable, power transmission interruption or delay is likely to occur, affecting the operating efficiency and straightening accuracy of the device. This solution improves the reliability and stability of the transmission through this special shape design, thereby improving the overall performance of the device.

[0087] An upper coupling shaft 42 and a lower coupling shaft 41 are rotatably mounted on the frame 1, and the upper coupling shaft 42 is connected to the first square shaft 19 through a toothed synchronous belt. A first bevel gear is mounted on both the upper coupling shaft 42 and the lower coupling shaft 41, and the two first bevel gears are meshed with each other. The shaping rotating frame 2 is rotatably connected to the frame 1 through a bearing, and an active bevel gear ring 43 is rotatably mounted on the shaping rotating frame 2, and a driven bevel gear ring 43 and the shaping rotating frame 2 are both mounted with a driven bevel gear ring. The bottom end of the lower coupling shaft 41 is fixed A transmission bevel gear is fixedly installed, and the two driven bevel gear rings are both connected to the transmission bevel gear. A convex shaft 44 driven by an active bevel gear ring 43 is rotatably installed on the shaping rotary frame 2, and two eccentric wheels 31 are installed on the convex shaft 44. A vibration transmission wheel 32 is rotatably installed on the reciprocating frame 3 and corresponds to the position of the two eccentric wheels 31. The two vibration transmission wheels 32 are respectively adapted and connected to the two eccentric wheels 31, and a return spring 33 limited by the shaping rotary frame 2 is installed on the side of the reciprocating frame 3.

[0088] When the servo motor 15 drives the first square shaft 19 to rotate, the first square shaft 19 drives the upper coupling shaft 42 to rotate through the toothed synchronous belt, and the first bevel gear on the upper coupling shaft 42 meshes with the first bevel gear on the lower coupling shaft 41 to rotate the lower coupling shaft 41, and the transmission bevel gear at the bottom end of the lower coupling shaft 41 is connected to the two driven bevel gear rings on the shaping rotating frame 2, driving the shaping rotating frame 2 to rotate;

[0089] At the same time, the active bevel gear ring 43 is connected with the transmission component on the convex shaft 44 to drive the convex shaft 44 to rotate, and the eccentric wheel 31 on the convex shaft 44 is adapted to be connected with the vibration transmission wheel 32 on the reciprocating frame 3, so that the reciprocating frame 3 reciprocates in the shaping rotating frame 2. In the prior art, the driving structure of the shaping rotating frame 2 and the reciprocating frame 3 is complex and the transmission efficiency is low. The present solution simplifies the power transmission path and improves the transmission efficiency through the transmission structure, so that the rotation of the shaping rotating frame 2 and the movement of the reciprocating frame 3 can be coordinated.

[0090] In this process, the reciprocating shaping roller 4 in the shaping rotating frame 2 plays a key role. It can perform multi-directional bending on the steel bar 10 and release the stress of the steel bar 10 when it is released from the steel bar 10 unwinding device, so as to better shape the steel bar 10 in the future, improve the shaping quality of the steel bar 10, and lay a good foundation for subsequent straightening and other processes.

[0091] A differential shaft 34 is rotatably mounted on the shaping rotating frame 2, a passive bevel gear drivingly connected to the active bevel gear ring 43 is mounted at the bottom of the differential shaft 34, a second bevel gear is mounted on both the differential shaft 34 and the cam shaft 44, the two second bevel gears mesh with each other, and two driven bevel gear rings are respectively arranged on both sides of the driving bevel gear.

[0092] When the active bevel gear ring 43 rotates, it drives the passive bevel gear at the bottom of the differential shaft 34 to rotate the differential shaft 34, and the differential shaft 34 and the second bevel gear on the cam shaft 44 mesh with each other to achieve differential transmission therebetween. Since the two driven bevel gear rings are respectively arranged on both sides of the transmission bevel gear, the shaping rotating frame 2 can achieve more flexible speed adjustment and motion control during the rotation process.

[0093] The shaping rotating frame 2 is rotated to achieve 360° multi-directional shaping and bending of the steel bar 10, so that the stress released by the steel bar 10 can be fully released in multiple directions;

[0094] The cutting and unloading mechanism includes a cutting frame 35 and a knife frame 36. A group of second guide wheels 37 for limiting the position and guiding the steel bars 10 are installed on the cutting frame 35. A group of cutting push rods 38 are installed between the cutting frame 35 and the knife frame 36. A cutting knife 39 is installed on the bottom surface of the knife frame 36. A limiting frame 40 for limiting the position of the steel bars 10 is installed on the cutting frame 35 and at a position corresponding to the position directly below the cutting knife 39. A knife groove adapted to the cutting knife 39 is fixedly opened on the limiting frame 40.

[0095] After the previous processing steps, the steel bar 10 enters the cutting frame 35. The second guide wheel 37 on the cutting frame 35 limits and guides the steel bar 10 to ensure that the steel bar 10 is in the correct cutting position. The cutting push rod 38 is started to push the knife frame 36 to move downward, and the cutting knife 39 on the bottom of the knife frame 36 drops accordingly to cut the steel bar 10. The limit frame 40 limits the steel bar 10 during cutting to prevent the steel bar 10 from shaking. The knife groove is adapted to the cutting knife 39 to make the cutting more accurate.

[0096] In the prior art, the cutting and unloading device often has problems such as large cutting position deviation and uneven cut end surface of the steel bar 10. The present solution realizes the precise length cutting of the steel bar 10 and the construction unloading of the fixed-length steel bar 10 after cutting through the cutting and unloading mechanism.

[0097] Each of the correction rollers 4 and the straightening rollers 9 is internally installed with an electric heating rod, the heating temperature range of the electric heating rod is 400° C. The correction rollers 4 and the straightening rollers 9 are both made of chromium-12 material.

[0098] When in use, the electric heating rods inside the correcting roller 4 and the straightening roller 9 are energized to generate heat, so that the temperature of the roller body is increased and maintained at 400°C. This temperature range further softens the steel bar 10. For the correcting roller 4, when the steel bar 10 is bent in multiple directions to release stress, the softened steel bar 10 is more likely to deform, and the stress release operation can be completed more efficiently; for the straightening roller 9, the softened steel bar 10 is easier to straighten, which is beneficial for the roller body to perform shaping and straightening operations on the steel bar 10.

[0099] The roll body made of chromium twelve has high hardness and wear resistance, and is not easily deformed and worn in a high-temperature working environment, which extends the service life of the roll body. In the prior art, some roll bodies do not have a heating function and the material is not heat-resistant, resulting in poor processing effect on the steel bar 10 and frequent replacement of the roll body. Through this setting, this solution significantly improves the processing effect of the steel bar 10 and reduces the equipment maintenance cost.

[0100] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A steel bar cutting device for construction engineering construction, comprising a frame (1), characterized in that, Along the feeding direction of the steel bar (10) on the bracket, a heating and guiding component, a rotatable shaping rotary frame (2), a distance adjusting mechanism, and a cutting and blanking mechanism are sequentially installed. A reciprocating frame (3) that can reciprocate within the shaping rotary frame (2) is installed on the inner wall of the shaping rotary frame (2). Two straightening rollers (4) are rotatably installed on the reciprocating frame (3). Two symmetrically arranged and reciprocating distance-adjustable straightening frames (5) are drivingly connected to the distance adjusting mechanism. A reciprocating stroke adjusting component is installed on the distance adjusting mechanism. The reciprocating stroke adjusting component is used to adjust the reciprocating stroke of the straightening frame (5). A driving pressure ring (6) is rotatably installed on the inner wall of each of the two straightening frames (5). The driving pressure ring (6) is driven to rotate by the distance adjusting mechanism. A group of straightening modules distributed in a circumferential array are installed between the two driving pressure rings (6); The straightening module includes a pressing frame (7). A connecting rod (8) is hinged between the pressing frame (7) and each of the two driving pressure rings (6). A straightening roller (9) is rotatably installed on the inner wall of the pressing frame (7); The cutting and blanking mechanism is used for the fixed-length cutting and blanking of the steel bar (10); The heating and guiding component includes a material guiding pipe (11) installed on the frame (1). An induction heating coil (12) is sleeved on the material guiding pipe (11). The temperature heating range of the induction heating coil (12) is 200°C - 400°C. Two guiding frames (13) are installed on the frame (1). A group of first guiding wheels (14) for guiding the feeding of the steel bar (10) are rotatably installed on each of the two guiding frames (13); The distance adjusting mechanism includes a servo motor (15) installed on the frame (1) and a bidirectional lead screw (16) rotatably connected to the frame (1). A torsion spring (17) is fixedly arranged at the rotational connection of the bidirectional lead screw (16) and the frame (1). The bidirectional lead screw (16) is driven by the servo motor (15) and reciprocally rotates. A first square shaft (19) driven by the servo motor (15) is rotatably installed on the frame (1). A hollow shaft (18) is rotatably installed on the inner wall of one of the straightening frames (5). A first square groove with both ends open and slidably connected to the first square shaft (19) is fixedly opened inside the hollow shaft (18). A transmission gear (20) is installed on the hollow shaft (18). A passive gear ring (21) meshing with the transmission gear (20) is fixedly installed on one of the driving pressure rings (6); The stroke adjustment assembly comprises a second square shaft (22) mounted on the output shaft end of the servo motor (15), a tensioning frame (23) slidably connected to the frame (1), and a linear transmission module (24) mounted on the frame (1); an adjustment seat (25) is rotatably mounted on the linear transmission module (24); a semi-conical transmission column (26) is rotatably mounted on the adjustment seat (25); and an axial position of the semi-conical transmission column (26) is fixedly provided with a slidably connected to the second square shaft (22). The second square groove is connected to the tensioning frame (23), the bottom surface of which is installed with a tensioning spring (27) limited by the frame (1), the tensioning frame (23) is rotatably installed with a tensioning shaft (28), the tail of which is installed with a driven inclined wheel (29) that fits with the semi-conical transmission column (26), the tensioning shaft (28) is transmission-connected with an elastic transmission belt (30), and the elastic transmission belt (30) is transmission-connected with the bidirectional screw rod (16) and the first square shaft (19) respectively.

2. The bar cutting device for construction engineering construction according to claim 1, wherein, A transmission cone surface and a transmission notch are fixedly provided on the semi-conical transmission column (26), the central angles of the transmission cone surface and the transmission notch are both 180°, and friction patterns are provided on the transmission cone surface and the driven bevel wheel (29).

3. A steel bar cutting device for construction engineering construction according to claim 1, characterized in that The cross-sections of the first square axis (19), the second square axis (22), the first square groove and the second square groove are all regular hexagons.

4. A steel bar cutting device for construction engineering construction according to claim 1, characterized in that, An upper coupling shaft (42) and a lower coupling shaft (41) are rotatably mounted on the frame (1); the upper coupling shaft (42) is transmission-connected to the first square shaft (19) via a toothed synchronous belt; a first bevel gear is mounted on each of the upper coupling shaft (42) and the lower coupling shaft (41); the two first bevel gears are meshed with each other; the shaping rotating frame (2) is rotatably connected to the frame (1) via a bearing; an active bevel gear ring (43) is rotatably mounted on the shaping rotating frame (2); a driven bevel gear ring (43) and the shaping rotating frame (2) are both mounted with a driven bevel gear ring; the lower coupling shaft (41) is A transmission bevel gear is fixedly mounted on the bottom end, and the two driven bevel gear rings are both in transmission connection with the transmission bevel gear. A convex shaft (44) driven by an active bevel gear ring (43) is rotatably mounted on the shaping rotating frame (2), and two eccentric wheels (31) are mounted on the convex shaft (44). A vibration transmission wheel (32) is rotatably mounted on the reciprocating frame (3) at positions corresponding to the two eccentric wheels (31), and the two vibration transmission wheels (32) are respectively matched and connected with the two eccentric wheels (31). A return spring (33) limited by the shaping rotating frame (2) is mounted on the side of the reciprocating frame (3).

5. A steel bar cutting device for construction engineering construction according to claim 4, characterized in that, A differential shaft (34) is rotatably mounted on the shaping rotating frame (2); a passive bevel gear drivingly connected to a driving bevel gear ring (43) is mounted at the bottom of the differential shaft (34); a second bevel gear is mounted on both the differential shaft (34) and the cam shaft (44); the two second bevel gears are meshed with each other; and the two driven bevel gear rings are respectively arranged on both sides of the driving bevel gear.

6. The bar cutting device for construction engineering construction according to claim 1, characterized in that, The cutting and blanking mechanism includes a cutting frame (35) and a tool rest (36). A set of second guide wheels (37) for limiting and guiding the steel bars (10) are installed on the cutting frame (35). A set of cutting push rods (38) are installed between the cutting frame (35) and the tool rest (36). A cutting tool (39) is installed on the bottom surface of the tool rest (36). A limiting frame (40) for limiting the steel bars (10) is installed on the cutting frame (35) at a position directly below the cutting tool (39). A tool slot adapted to the cutting tool (39) is fixedly provided on the limiting frame (40).

7. A steel bar cutting device for construction engineering construction according to claim 1, characterized in that, Electric heating rods are installed inside each of the shaping rollers (4) and each of the straightening rollers (9). The heating temperature range of the electric heating rods is 250°C - 400°C. The shaping rollers (4) and the straightening rollers (9) are both made of chromium twelve material.

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