Building construction steel bar cutting device and cutting process

Abstract

The invention relates to the field of reinforcing steel bar cutting, and discloses a building construction reinforcing steel bar cutting device and a cutting technology.According to the technical scheme, the building construction reinforcing steel bar cutting device is characterized by comprising a workbench; the two supporting frames are arranged on the workbench, and a plurality of roll shafts are arranged on the supporting frames; the positioning pipe is arranged on one side of the supporting frame; by introducing the technical scheme of step-by-step feeding and rotary cutting, the problems that in the prior art, cutting precision is low, impact force is large, reinforcing steel bars are prone to bending, and blades are rapidly abraded are effectively solved. In the operation process, the blade gradually cuts into the reinforcing steel bar, so that overlarge impact force caused by the fact that the blade cuts into the reinforcing steel bar too deep at a time is avoided, and the risks of reinforcing steel bar deformation and blade damage are remarkably reduced. And meanwhile, splashing of chippings generated in the cutting process can be reduced through gradual feeding, the operation safety is improved, and the follow-up cleaning workload is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar cutting, and in particular to a steel bar cutting device and a cutting process for building construction. Background Art

[0002] As an important material in construction, steel bars play a vital role in structural construction. With the continuous expansion of the scale of construction projects, the demand for steel bar cutting is increasing. Especially when steel bars need to be cut quickly and accurately at the construction site, traditional manual cutting methods or single cutting technologies often cannot meet the requirements of high precision, high efficiency and strong safety. Therefore, the development of efficient and stable steel bar cutting equipment is of great practical significance.

[0003] There are some rebar cutting devices on the market, but most of them still have some limitations. For example, most existing cutting devices use a single blade to cut directly into the rebar, which easily leads to a large impact force during cutting, resulting in deformation of the rebar, damage to the blade, uneven cutting process and high-frequency maintenance requirements. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a construction steel bar cutting device and a cutting process, aiming to alleviate the above-mentioned problems at least to a certain extent.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A steel bar cutting device for construction, characterized by comprising:

[0007] Workbench;

[0008] Two support frames arranged on the workbench, wherein a plurality of rollers are arranged on the support frames;

[0009] A positioning tube disposed on one side of the support frame;

[0010] A knife rack is provided between the two support racks, and two sets of blades are provided on the knife rack;

[0011] A support rod is arranged on the support frame, the inner wall of the knife frame is provided with a support groove, the support rod extends into the knife frame and cooperates with the support groove, and there are at least two support rods;

[0012] The sliding frames arranged on both sides of the tool holder are slidably connected to the tool holder, the support frame is slidably connected to a limit rod, the sliding frames are provided with a slide rail, and the limit rod cooperates with the slide rail;

[0013] A feeding component disposed between the slide frame and the blade, used to move the position of the blade,

[0014] A driving component disposed between the support rod and the sliding frame, used for driving the sliding frame and the tool holder to rotate;

[0015] A positioning component is arranged between the positioning tube and the sliding frame and is used for positioning the steel bars in the positioning tube.

[0016] Preferably, the driving component includes a connecting frame slidably connected to the workbench, the connecting frame is fixed on the limiting rod, guide rods are respectively connected to both sides of the tool holder, the sliding frame is slidably connected to the guide rods, one side of the sliding frame is connected to a gear a, the connecting frame is connected to a motor, and the driving shaft of the motor is connected to a gear b that meshes with the gear a.

[0017] Preferably, the feeding component can move the two groups of blades toward the axis of the tool holder when the sliding holder moves away from the tool holder;

[0018] The feeding component includes a connecting plate connected to the sliding frame, the tool holder is provided with a cutting edge adapted to the blade, the blade is slidably connected to the cutting edge, the top of the blade is connected to a connecting platform slidably connected to the tool holder, a spring a is connected between the connecting platform and the tool holder, and the bottom of the connecting plate is rotatably connected to a connecting rod a rotatably connected to the connecting platform.

[0019] Preferably, the positioning component includes positioning ports opened at the top and bottom of the positioning tube, a positioning platform is slidably connected in the positioning port, a spring b is connected between the positioning platform and the positioning tube, two connecting rods b are rotatably connected to the positioning platform, a connecting rod a is provided on one side of the connecting frame, and one end of the connecting rod b is rotatably connected to the connecting rod a.

[0020] Preferably, the feeding component is capable of feeding the blade at a predetermined time interval a, so that the blade advances a predetermined distance a each time, and maintains the current feeding position for a predetermined time a1 after each feeding;

[0021] The feeding component also includes a connecting port opened on the workbench, the connecting frame is slidably connected to the connecting port, a linear driving member is fixed in the connecting port, the linear driving member is a double-rod hydraulic cylinder, two groups of moving platforms are slidably connected in the connecting port, the two groups of moving platforms are respectively located at the two ends of the linear driving member, corresponding to the two connecting frames, a connecting rod c rotatably connected to the moving platform and connected to the connecting frame, two upper and lower adjacent moving platforms are respectively provided with progressive openings on both sides close to each other, the progressive openings include an inclined section and a straight section, the thickness of the moving platform gradually increases when it approaches the adjacent connecting frame, progressive push plates are connected to the piston shafts at both ends of the linear driving member, and a spring c is connected between the connecting frame and the connecting port.

[0022] Preferably, the positioning component can fix the steel bars in the positioning tube when the sliding frame moves away from the tool holder, and release the fixation of the steel bars when the sliding frame moves closer to the tool holder;

[0023] The positioning component also includes a connecting rod b connected to the connecting frame, and the connecting rod b is slidably connected to the connecting rod a. A plurality of wedge-shaped openings are provided in the connecting rod a. A wedge-shaped strip adapted to the wedge-shaped opening is slidably connected to the connecting rod b, and a spring d is connected between the wedge-shaped strip and the connecting rod b.

[0024] Preferably, a connecting roller is rotatably connected to the support frame on the left side, the roller shaft is fixed to the connecting roller, a gear c is connected to the roller shaft, a gear d meshing with the gear c is provided on the support frame, a rack meshing with the gear d is provided on the connecting frame, and a ratchet mechanism is provided between the gear c and the connecting roller.

[0025] Preferably, a connecting opening is provided on the support frame, the connecting roller is arranged in the connecting opening, a connecting ring is slidably connected in the connecting opening, the connecting roller is rotatably connected to the connecting ring, a spring e is connected between the connecting ring and the connecting opening, a bracket is fixed on the connecting ring, the gear d is rotatably connected to the bracket, a push rod is connected to one side of the connecting frame, the rack is slidably connected to the push rod, and a spring f is connected between the rack and the push rod, and a rubber pad is provided on the roller shaft.

[0026] Preferably, the support frame is also rotatably connected to a plurality of stabilizing shafts, the support frame is slidably connected to a sliding shaft, the stabilizing shaft is rotatably connected to the sliding shaft, and a spring e is also connected between the sliding shaft and the support frame.

[0027] A steel bar cutting process is applicable to any of the above-mentioned steel bar cutting devices for construction, and the specific steps are as follows:

[0028] Step 1: Pass the steel bar from one end of the support frame into the support frame on the left side of the workbench, through the roller shaft, the stabilizing shaft, the positioning tube knife holder, and finally out of the support frame on the right side;

[0029] Step 2: The motor drives the sliding frame to rotate through the gear transmission, driving the knife holder and the blade to rotate, and the feeding component starts to work. The sliding frame generates displacement while rotating, pushing the blade to gradually feed toward the axis of the steel bar, and the positioning component fixes the steel bar;

[0030] Step 3: the feeding component feeds the blade at a predetermined time interval a, advances a predetermined distance a each time, and maintains a pause time a1 at the current feeding position;

[0031] Step 4: When the cutting is completed, the sliding frame starts to reset, and the positioning component unlocks the steel bar when the sliding frame 108 returns to its position;

[0032] Step 5: The rollers rotate when the sliding frame returns to the preset distance, and the steel bars are transported to a predetermined length;

[0033] Step 6: After the blade returns to its original position, repeat step 3.

[0034] In summary, the present invention mainly has the following beneficial effects:

[0035] This application effectively solves the problems of low cutting accuracy, high impact force, easy bending of steel bars, and fast blade wear in the prior art by introducing the technical solutions of gradual feeding and rotary cutting. During the operation, the blade gradually cuts into the steel bar, avoiding excessive impact force caused by the blade cutting too deep at one time, thereby significantly reducing the risk of steel bar deformation and blade damage. At the same time, gradual feeding can also reduce the splash of debris generated during cutting, improve the safety of the operation, and reduce the subsequent cleaning workload. Since the blade rotates around the steel bar and the cutting position changes continuously, the blade wears more evenly, avoiding the blade wear being concentrated in the same position in the one-way cutting mode, thereby extending the service life of the blade and reducing the maintenance frequency.

[0036] In addition, the cutting method in the present application is more uniform than the traditional single-way downward pressure cutting, and this cutting method controls the cutting depth of each feed. Each time the feed is made, the blade will only cut into a smaller distance, avoiding the blade from cutting into the steel bar at a large scale at one time, causing excessive damage or pulling of the surface. This makes the cutting more uniform and smooth, reduces the burrs formed by cutting too fast, improves the smoothness of the cut end face, and reduces the need for subsequent finishing. Multiple blades act on the steel bar at the same time, making the cutting force more uniform, reducing local stress concentration, and further improving the accuracy and quality of the cutting. The pause time maintained after each feed allows the blade to have enough time to stabilize the cutting position, ensuring that the cutting depth, cutting force, etc. of each feed remain consistent, thereby improving the accuracy and uniformity of the cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the hidden workbench structure of the present invention;

[0039] Figure 3 It is a schematic diagram of the structure of the feeding component of the present invention;

[0040] Figure 4 is another schematic diagram of the feed component of the present invention;

[0041] Figure 5 It is a schematic diagram of the structure of a mobile station of the present invention;

[0042] Figure 6 It is a schematic diagram of the tool holder structure of the present invention;

[0043] Figure 7 is another schematic diagram of the tool holder structure of the present invention;

[0044] Figure 8 is another schematic diagram of the tool holder structure of the present invention;

[0045] Fig. 9 It is a schematic diagram of the blade structure of the present invention;

[0046] Fig.10 is another schematic diagram of the blade structure of the present invention;

[0047] Fig.11 It is a schematic diagram of the support frame structure of the present invention;

[0048] Fig.12 is another schematic diagram of the support frame structure of the present invention;

[0049] Fig.13 It is a schematic diagram of the positioning platform structure of the present invention;

[0050] Fig.14 is a cross-sectional schematic diagram of the connecting rod a structure of the present invention;

[0051] Fig.15 yes Fig.14 A schematic diagram of the enlarged local structure at a in the middle;

[0052] Fig.16 It is a schematic diagram of the roller structure of the present invention;

[0053] Fig.17 It is a schematic diagram of the connecting ring structure of the present invention;

[0054] Fig.18 It is a schematic diagram of the ratchet mechanism structure of the present invention.

[0055] Reference numerals:

[0056] 100, workbench; 101, support frame; 102, roller; 103, positioning tube; 104, knife holder; 105, blade; 106, support rod; 107, support groove; 108, sliding frame; 109, limit rod; 110, slide rail;

[0057] 200, connecting frame; 201, guide rod; 202, gear a; 203, motor; 204, gear b;

[0058] 300, connecting plate; 301, connecting platform; 302, spring a; 303, connecting rod a; 304, positioning port; 305, positioning platform; 306, spring b; 307, connecting rod b; 308, connecting rod a;

[0059] 400, connection port; 401, linear drive member; 402, connecting rod c; 403, progressive opening; 404, inclined section; 405, linear section; 406, progressive push plate; 407, spring c; 408, moving platform;

[0060] 500, connecting rod b; 501, wedge-shaped opening; 502, wedge-shaped strip; 503, spring d;

[0061] 600, connecting roller; 601, gear c; 602, gear d; 603, rack; 604, ratchet mechanism; 605, connecting opening; 606, connecting ring; 607, spring e; 608, bracket; 609, push rod; 610, spring f; 611, stabilizing shaft; 612, sliding shaft. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] refer to Figure 1-Figure 18 , a construction steel bar cutting device, comprising:

[0064] Workbench 100;

[0065] Two support frames 101 are arranged on the workbench 100, and a plurality of rollers 102 are arranged on the support frames 101;

[0066] A positioning tube 103 provided on one side of the support frame 101;

[0067] A knife holder 104 is provided between the two support frames 101, and two sets of blades 105 are provided on the knife holder 104;

[0068] A support rod 106 is arranged on the support frame 101, and a support groove 107 is opened on the inner wall of the knife frame 104. The support rod 106 extends into the paper knife frame 104 and cooperates with the support groove 107. There are at least two support rods 106;

[0069] The sliding frames 108 disposed on both sides of the tool holder 104 are slidably connected to the tool holder 104. The support frame 101 is slidably connected to a limit rod 109. The sliding frames 108 are provided with a slide rail 110, and the limit rod 109 cooperates with the slide rail 110.

[0070] The feeding member disposed between the slide frame 108 and the blade 105 is used to move the position of the blade 105.

[0071] A driving component disposed between the support rod 106 and the sliding frame 108, for driving the sliding frame 108 and the tool holder 104 to rotate;

[0072] A positioning component provided between the positioning tube 103 and the sliding frame 108, used for positioning the steel bars in the positioning tube 103;

[0073] The feeding component can move the two sets of blades 105 toward the axis of the tool holder 104 when the slide holder 108 moves away from the tool holder 104;

[0074] The positioning component can fix the steel bars in the positioning tube 103 when the sliding frame 108 moves away from the tool holder 104, and release the fixing of the steel bars when the sliding frame 108 moves closer to the tool holder 104;

[0075] The feeding component can feed the blade 105 at a predetermined time interval a, so that the blade 105 advances a predetermined distance a each time, and maintains the current feeding position for a predetermined time a1 after each feeding;

[0076] By setting the support frame 101, the steel bar to be cut can be inserted from the support frame 101 at one end, and then pass through the positioning tube 103 and the knife holder 104 in sequence, and then pass through the support frame 101 at the other end. Multiple blades 105 arranged on the knife holder 104 face the steel bar to cut the steel bar.

[0077] Specifically, the support rod 106 cooperates with the tool holder 104 through the support groove 107 to limit the position of the tool holder 104 so that it can only rotate around the axis without additional displacement. The limit rod 109 cooperates with the sliding frame 108 through the slide rail 110 and is slidably connected to the support frame 101, so that the sliding frame 108 can be forced to move along the direction of the limit rod 109 while rotating.

[0078] During operation, the operator can drive the sliding frame 108 to rotate through the driving component, and the sliding frame 108 further drives the tool holder 104 and the multiple blades 105 on the tool holder 104 to rotate synchronously. At the same time, the feeding component pushes the sliding frame 108 to move along the limit rod 109 away from the tool holder 104 during the rotation of the sliding frame 108. In this process, the positioning component provided can fix the steel bars inserted in the positioning tube 103 when the sliding frame 108 moves away from the tool holder 104, so as to ensure that the steel bars will not be axially or radially offset during the cutting process, thereby ensuring the cutting accuracy. When the sliding frame 108 moves away from the tool holder 104, the two sets of blades 105 can be synchronously moved toward the axis of the tool holder 104, that is, the steel bars, and the blades 105 can be fed at a predetermined time interval a, so that the blades 105 advance a predetermined distance a each time, and maintain the current feeding position for a predetermined time a1 after each feeding, thereby realizing a step-by-step cutting method, making the cutting process more stable, avoiding excessive impact caused by the blade 105 cutting too deep at one time, and reducing the risk of steel bar deformation and blade 105 damage. In addition, the gradual feeding method can also reduce the splashing of debris generated during cutting, improve the safety of the operation, and reduce the subsequent cleaning workload. Since the blade 105 rotates around the steel bar and gradually approaches the axis, this cutting method is more uniform than the traditional single-down pressure cutting method, which can reduce the burrs on the surface of the steel bar during the cutting process, improve the smoothness of the cut end face, and reduce the need for subsequent finishing. At the same time, multiple blades 105 act on the steel bar at the same time, making the cutting force more uniform, reducing local stress concentration, and further improving the cutting accuracy and quality. Maintaining a pause time a1 after each feed can allow the blade 105 to have enough time to stabilize the cutting position, ensuring that the cutting depth, cutting force, etc. of each feed remain consistent, thereby improving the cutting accuracy and uniformity. The pause time a1 helps to reduce uneven cutting caused by too fast feeding and ensures consistent cutting effect of the blade 105.

[0079] Moreover, the blade 105 in the present application is designed as a bevel wedge. On the basis of the rectangular base, a bevel chamfer is made at the front end. The blade is not facing the cutting direction, but arranged obliquely, and multiple blades 105 are arranged in a ring around the steel bar. Compared with the cutting device in the prior art, the present application cuts in an oblique manner, and the blade gradually contacts the material, rather than cutting hard from the front, which can effectively reduce the cutting load and reduce the impact. Intermittent feeding means that the blade 105 does not cut into the steel bar in full at one time, but advances gradually, so that the cutting force is smaller during each feeding, avoiding instantaneous overload. During the rotation process, the cutting depth during each feeding is controllable, reducing the violent collision between the tool and the steel bar and improving stability. At the same time, the blade 105 rotates around the steel bar, and the blade constantly changes the cutting position, and will not always wear the same point, making the wear of the blade 105 more uniform. Compared with unidirectional cutting, the rotary cutting method allows the blade 105 to act on the steel bar from multiple directions, avoiding cutting deformation caused by unidirectional force.

[0080] Compared with the steel bar cutting device in the prior art, the present application solves the problems of low cutting accuracy, large impact force and fast wear of the blade 105 in the prior art by introducing the technical solutions of gradual feeding and rotary cutting, thereby improving the efficiency, safety and quality of steel bar cutting.

[0081] As a further solution of the present invention, the driving component includes a connecting frame 200 slidably connected to the workbench 100, the connecting frame 200 is fixed on the limit rod 109, the two sides of the tool holder 104 are respectively connected to the guide rods 201, the sliding frame 108 is slidably connected to the guide rods 201, one side of the sliding frame 108 is connected to the gear a202, the connecting frame 200 is connected to the motor 203, and the driving shaft of the motor 203 is connected to the gear b204 meshing with the gear a202;

[0082] By setting the connecting frame 200, when in use, the limiting rod 109 can be moved by moving the connecting frame 200, and the limiting rod 109 slides at one end of the support frame 101. At this time, the limiting rod 109 can pull the position of the sliding frame 108 through the slide rail 110, and the sliding frame 108 can slide on the guide rod 201, so as to achieve the purpose of sliding the sliding frame 108 on one side of the tool holder 104. In addition, when cutting, the motor 203 can be used to drive the gear b204 to rotate, and the gear b204 can drive the gear a202 to rotate, so that the sliding frame 108 can rotate. When the sliding frame 108 rotates, it can drive the tool holder 104 to rotate through the guide rod 201, and the tool holder 104 can rotate around the steel bar under the lateral limit of the support rod 106. Such a setting ensures that the tool holder 104 can rotate under precise limiting conditions, and the lateral displacement of the sliding frame 108 will not interfere with the rotation transmission of the tool holder 104 by the motor 203.

[0083] As a further solution of the present invention, the feeding component includes a connecting plate 300 connected to the sliding frame 108, a cutting edge adapted to the blade 105 is opened on the knife frame 104, the blade 105 is slidably connected to the cutting edge, the top of the blade 105 is connected to a connecting platform 301 slidably connected to the knife frame 104, a spring a302 is connected between the connecting platform 301 and the knife frame 104, and a connecting rod a303 rotatably connected to the connecting platform 301 is rotatably connected to the bottom of the connecting plate 300;

[0084] By setting the connecting plate 300, the sliding frame 108 can drive the connecting plate 300 to move when moving, and at the same time, the position of the connecting platform 301 is pressed by the connecting rod a303, so that the spring a302 is compressed. When the sliding frame 108 continues to move, the connecting rod a303 gradually tends to the vertical state, thereby allowing the blade 105 to feed along the blade edge. In this way, the blade 105 can be accurately fed each time the sliding frame 108 is displaced, so that the purpose of feeding the blade 105 to the steel bar can be achieved when the sliding frame 108 moves away from the knife holder 104. When the sliding frame 108 is subsequently reset, the restoring force of the spring a302 will prompt the blade 105 to move in the opposite direction along the blade edge, so as to achieve the reset of the blade 105. As the sliding frame 108 moves, the connecting rod a303 gradually returns to the original position from the vertical state, and the blade 105 can be pulled back to the initial position by the elastic force of the spring a302.

[0085] As a further solution of the present invention, the positioning component includes a positioning port 304 opened at the top and bottom of the positioning tube 103, a positioning platform 305 is slidably connected in the positioning port 304, a spring b306 is connected between the positioning platform 305 and the positioning tube 103, two connecting rods b307 are rotatably connected to the positioning platform 305, a connecting rod a308 is provided on one side of the connecting frame 200, and one end of the connecting rod b307 is rotatably connected to the connecting rod a308;

[0086] By setting the connecting rod a308, when the connecting frame 200 moves and pulls the sliding frame 108 through the limiting rod 109, the set connecting rod a308 moves with the connecting frame 200, and can press the position of the positioning platform 305 through the connecting rod b307, so that the spring b306 can be extended, and the two positioning platforms 305 move closer to the steel bars in the positioning tube 103, and the steel bars can be pressed and positioned, thereby ensuring that the steel bars will not be axially or radially offset during the cutting process, and the cutting accuracy is maintained.

[0087] As a further solution of the present invention, the feeding component also includes a connecting port 400 opened on the workbench 100, the connecting frame 200 is slidably connected in the connecting port 400, a linear driving member 401 is fixed in the connecting port 400, the linear driving member 401 is a double-rod hydraulic cylinder, two groups of moving platforms 408 are slidably connected in the connecting port 400, the two groups of moving platforms 408 are respectively located at both ends of the linear driving member 401, corresponding to the two connecting frames 200, a connecting rod c402 rotatably connected to the moving platform 408 and rotatably connected to the connecting frame 200, two upper and lower adjacent moving platforms 408 are respectively provided with progressive openings 403 on both sides close to each other, the progressive openings 403 include an inclined section 404 and a straight section 405, the moving platform 408 is close to the adjacent connecting frame 200, and its thickness gradually increases, the piston shafts at both ends of the linear driving member 401 are connected with progressive push plates 406, and a spring c407 is connected between the connecting frame 200 and the connecting port 400;

[0088] By setting a linear drive member 401, when cutting, the linear drive member 401 can be used to drive the progressive push plate 406 to move. The linear drive member 401 can be a double-rod hydraulic cylinder, and the piston shafts at both ends of the hydraulic cylinder drive the progressive push plate 406 to move synchronously and at the same rate. During the initial movement, the progressive push plate 406 moves on a straight section 405 of the progressive opening 403, and when the progressive push plate 406 moves to the end of a straight section 405, it is released from the inclined section 404. As the progressive push plate 406 goes deeper, it can touch the inclined section 404, forcing one moving platform 408 to move upward and the other to move downward. The position of the connecting frame 200 can be pressed by the connecting rod c402, so that the connecting frame 200 is displaced by a predetermined distance, and the blade 105 can be fed by a predetermined distance. The length of each straight segment 405 is equal, the angle and length of each inclined segment 404 are equal, the time for the progressive push plate 406 to slide on one of the straight segments 405 is a1, that is, the time for the current blade 105 to maintain the feed amount, and when the inclined segment 404 is pressed by the progressive push plate 406 until the next straight segment 405 is reached, the distance moved by the moving table 408 is a, that is, the predetermined distance a of each feed of the blade 105. Ensure that the blade 105 can cut with a consistent step length and uniform pressure during the cutting process. Through this precise control, the feeding process can achieve a high degree of stability and consistency, avoid the situation where the blade 105 is overloaded or underloaded during the cutting process, and ensure the consistency of parameters such as cutting depth and cutting force. In the setting, the piston shaft of the linear drive 401 is in a state of continuous motion, and moves in the opposite direction after reaching the limit telescopic distance. The design of continuous motion can avoid frequent starting and stopping, which helps to reduce the load of the linear drive 401, and eliminates the need to recalculate and set the appropriate stop and start time after each feeding of the blade 105, thereby avoiding the impact of setbacks. When cutting the steel bars, the movement of the connecting frame 200 can compress the spring c407 to generate potential energy. After the steel bars are completely cut off, that is, when the piston shaft of the linear drive member 401 extends to the limit position and begins to reset, the progressive push plate 406 gradually moves away from the connecting frame 200. The connecting frame 200 can gradually return to its original position under the action of the spring c407, and then the moving platform 408 can gradually return to its original position through the connecting rod c402, so that the blade 105 can return to its original position stably after the cutting is completed, ensuring the smooth progress of the next cutting process.

[0089] As a further solution of the present invention, the positioning component further includes a connecting rod b500 connected to the connecting frame 200, the connecting rod b500 is slidably connected to the connecting rod a308, a plurality of wedge-shaped openings 501 are provided in the connecting rod a308, a wedge-shaped strip 502 adapted to the wedge-shaped openings 501 is slidably connected to the connecting rod b500, and a spring d503 is connected between the wedge-shaped strip 502 and the connecting rod b500;

[0090] By setting the spring d503, the elastic potential energy of the spring d503 is greater than that of the spring b306. The spring b306 can give the wedge-shaped strip 502 a force to touch the wedge-shaped opening 501, so that the wedge-shaped strip 502 and the wedge-shaped opening 501 can form a certain friction force, which is greater than the elastic potential energy of the spring b306. That is, when the connecting frame 200 moves toward the positioning tube 103, the wedge-shaped strip 502 can be moved through the connecting rod b500. The wedge-shaped strip 502 cooperates with the wedge-shaped opening 501 through the force given by the spring b306 to form a friction force. When the connecting rod b500 moves, the connecting rod a308 can be driven to move. The connecting rod a308 moves and presses the positioning platform 305 through the connecting rod b307, so that the steel bar can be positioned. After the positioning platform 305 contacts the steel bar, the movement of the positioning platform 305 is restricted to maintain the current position, while the connecting frame 200 needs to continue to move. At this time, the force of the connecting frame 200 moving can overcome the potential energy of the spring b306, so that the wedge strip 502 rubs against the wedge-shaped opening 501 and produces displacement, shrinks toward the connecting rod b500 and leaves the wedge-shaped opening 501, and releases the follow-up of the connecting rod a308 and the connecting rod b500. The purpose of this setting is that when the positioning platform 305 presses the steel bar and no longer moves, the connecting frame 200 can continue to move without being restricted. For fixing steel bars, it can adapt to steel bars of different diameters. The timing of releasing the follow-up of steel bars with large diameters is advanced, and the timing of releasing the follow-up of steel bars with small diameters is slightly later, which can ensure that when the steel bars are about to be cut, the purpose of positioning and fixing steel bars of different diameters can be achieved. In addition, after the cutting is completed, the resetting of the connecting frame 200 can allow the connecting rod b500 to move synchronously. At this time, the cooperation between the wedge strip 502 and the wedge opening 501 can timely move the connecting rod a308, and then the positioning platform 305 can be returned to its position in time. After the cutting is completed, the fixing of the steel bar can be immediately released, which is conducive to the next subsequent cutting.

[0091] As a further solution of the present invention, a connecting roller 600 is rotatably connected to the support frame 101 on the left side, a roller shaft 102 is fixed to the connecting roller 600, a gear c601 is connected to the roller shaft 102, a gear d602 meshing with the gear c601 is provided on the support frame 101, a rack 603 meshing with the gear d602 is provided on the connecting frame 200, and a ratchet mechanism 604 is provided between the gear c601 and the connecting roller 600;

[0092] like Fig.16As shown, by setting the rack 603, when the connecting frame 200 moves away from the knife holder 104 and is about to cut the steel bar, the rack 603 moves with the connecting frame 200 and can drive the gear d602 to rotate counterclockwise, and the gear d602 can drive the gear c601 to rotate clockwise due to the meshing relationship. At this time, the ratchet mechanism 604 takes effect, allowing the gear c601 to idle on the connecting roller 600 without driving the roller shaft 102 to rotate, so as to prevent the rotation of the roller shaft 102 from affecting the predetermined cutting position of the steel bar. When the connecting frame 200 has not yet moved to the extreme position, due to the limited number of tooth blocks on the rack 603, the rack 603 and the gear d602 will be out of mesh. When the cutting is completed, the connecting frame 200 begins to gradually return to the knife holder 104. At this time, the rack 603 slides on the gear d602, but because the tooth blocks have not yet re-engaged with the gear d602, the rack 603 will not drive the gear d602. This design can make up for the time difference when the blade 105 returns to its original position, ensuring that the blade 105 can be reset to a certain distance before the roller shaft 102 starts to rotate, providing enough space for the steel bar to pass through multiple blades 105. As the connecting frame 200 moves, the rack 603 can mesh with the gear d602 again, and start to drive the gear d602 and gear c601 to rotate. At this time, the ratchet mechanism 604 plays a role again, allowing the rotation of the gear c601 to be transmitted to the connecting roller 600. The connecting roller 600 rotates counterclockwise, and cooperates with the positioning component to release the positioning of the steel bar in time. The rotation of the connecting roller 600 and the roller shaft 102 can transport the steel bar. In the above, by using the limited and determined moving distance of the connecting frame 200, the moving distance of the connecting frame 200 determines the meshing time of the rack 603 and the gear d602, thereby controlling the rotation of the gear c601. When the connecting frame 200 starts to return to its position, due to the meshing of the rack 603 and the gear d602, the gear d602 drives the gear c601 to rotate, thereby driving the connecting roller 600 to rotate. Since the meshing of the rack 603 and the gear d602 is based on a fixed number of tooth blocks and a predetermined transmission ratio, the number of rotations of the roller 102 is limited and determined. This limited number of rotations can accurately control the conveying distance of the steel bars. The returning action of the connecting frame 200 can be effectively combined with the number of rotations of the roller 102, and the fixed-length conveying of the steel bars can be achieved through a precise mechanical transmission system. After each cutting, while the connecting frame 200 returns to its position, the roller 102 rotates according to the preset number of circles, pushing the steel bars forward to ensure that the steel bars can be accurately moved to the next cutting position, thereby achieving efficient fixed-length cutting and continuous processing. In addition, the diameter of gear d602 is larger than that of gear c601, and by adding gear d602 between rack 603 and gear c601, the limited moving distance of connecting frame 200 can be effectively utilized to increase the number of rotations of roller shaft 102 as much as possible.In this way, the larger diameter of the gear d602 can enlarge the rotation range of the roller 102 by meshing with the gear c601, so that even if the moving distance of the connecting frame 200 is relatively short, a large number of rotations of the roller 102 can be achieved. The operator can also adjust the size and transmission ratio of the gear d602 and the gear c601 by installing gears d602 and c601 of different diameters to meet different fixed-length conveying requirements.

[0093] As a further solution of the present invention, a connecting opening 605 is opened on the support frame 101, and a connecting roller 600 is arranged in the connecting opening 605. A connecting ring 606 is slidably connected in the connecting opening 605. The connecting roller 600 is rotatably connected to the connecting ring 606. A spring e607 is connected between the connecting ring 606 and the connecting opening 605. A bracket 608 is fixed on the connecting ring 606. The gear d602 is rotatably connected to the bracket 608. A push rod 609 is connected to one side of the connecting frame 200. The rack 603 is slidably connected to the push rod 609, and a spring f610 is connected between the rack 603 and the push rod 609. A rubber pad is provided on the roller shaft 102.

[0094] By providing a connection opening 605, a connection ring 606 and a spring e607, the support frame 101 can provide a flexible structure, so that the connection roller 600 can be adaptively adjusted according to the diameter of the steel bar. Specifically, the connection roller 600 is rotatably connected to the connection opening 605 through the connection ring 606, and a spring e607 is connected between the connection ring 606 and the connection opening 605. The elasticity of the spring e607 can adjust the position of the connection roller 600 within a certain range, so that the connection roller 600 can adapt to the needs of steel bars of different diameters. When the diameter of the steel bar changes, the connection roller 600 can be displaced accordingly through the elastic action of the spring e607, thereby ensuring the stability of the contact between the roller shaft 102 and the steel bar, and avoiding poor contact due to differences in the diameter of the steel bar. The spring f610 is provided so that the rack 603 can always maintain meshing with the gear d602. Specifically, when the roller 102 and the connecting shaft are adaptively adjusted according to the diameter of the steel bar, the connecting ring 606 synchronously displaces the gear d602 through the bracket 608, maintaining the meshing of the gear d602 and the gear c601, and the spring f610 can press the rack 603 to make the rack 603 mesh with the gear d602. In this way, with the friction between the rubber pad and the steel bar, it can be ensured that the roller 102 can still effectively transport the steel bars with different diameters.

[0095] As a further solution of the present invention, the support frame 101 is also rotatably connected to a plurality of stabilizing shafts 611, the support frame 101 is slidably connected to a sliding shaft 612, the stabilizing shaft 611 is rotatably connected to the sliding shaft 612, and a spring e607 is also connected between the sliding shaft 612 and the support frame 101;

[0096] By setting the stabilizing shaft 611, when cutting the steel bars, the steel bars first pass through the support frame 101 and between the multiple rollers 102, and then pass through between the multiple stabilizing shafts 611 to reach the positioning tube 103, ensuring that the steel bars maintain a stable path during transmission and avoiding deviation of the steel bars.

[0097] A steel bar cutting process is applicable to any of the above-mentioned steel bar cutting devices for construction, and the specific steps are as follows:

[0098] Step 1: Pass the steel bar from one end of the support frame 101 into the support frame 101 on the left side of the workbench 100, through the roller 102, the stabilizing shaft 611, the positioning tube 103 and the tool holder 104, and finally pass through the support frame 101 on the right side;

[0099] Step 2: The motor 203 drives the slide frame 108 to rotate through the gear transmission, driving the tool holder 104 and the blade 105 to rotate, and the feeding component starts to work. The slide frame 108 generates displacement while rotating, pushing the blade 105 to gradually feed toward the axis of the steel bar, and the positioning component fixes the steel bar;

[0100] Step 3: the feeding component feeds the blade 105 at a predetermined time interval a, advances a predetermined distance a each time, and maintains a pause time a1 at the current feeding position;

[0101] Step 4: When the cutting is completed, the sliding frame 108 starts to reset, and the positioning component unlocks the steel bar when the sliding frame 108 returns to its original position;

[0102] Step 5: The roller 102 rotates when the sliding frame 108 returns to the preset distance, and the steel bar is conveyed to a predetermined length;

[0103] Step 6: After the blade 105 returns to the origin, repeat step 3.

[0104] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel bar cutting device for construction, characterized in that: include: Workbench; Two support frames are arranged on the workbench, and a plurality of rollers are arranged on the support frames; A positioning tube disposed on one side of the support frame; A knife rack is provided between the two support racks, and two sets of blades are provided on the knife rack; A support rod is arranged on the support frame, the inner wall of the knife frame is provided with a support groove, the support rod extends into the knife frame and cooperates with the support groove, and there are at least two support rods; The sliding frames arranged on both sides of the tool holder are slidably connected to the tool holder, the support frame is slidably connected to a limit rod, the sliding frames are provided with a slide rail, and the limit rod cooperates with the slide rail; A feeding component disposed between the slide frame and the blade, used to move the position of the blade, A driving component disposed between the support rod and the sliding frame, used for driving the sliding frame and the tool holder to rotate; A positioning component is arranged between the positioning tube and the sliding frame and is used for positioning the steel bars in the positioning tube.

2. A construction steel bar cutting device according to claim 1, characterized in that: The driving component includes a connecting frame slidably connected to the workbench, the connecting frame is fixed on the limiting rod, guide rods are respectively connected to both sides of the tool holder, the sliding frame is slidably connected to the guide rods, one side of the sliding frame is connected to a gear a, the connecting frame is connected to a motor, and the driving shaft of the motor is connected to a gear b meshing with the gear a.

3. A construction steel bar cutting device according to claim 1, characterized in that: The feeding component can move the two sets of blades toward the axis of the tool holder when the slide holder moves away from the tool holder; The feeding component includes a connecting plate connected to the sliding frame, the tool holder is provided with a cutting edge adapted to the blade, the blade is slidably connected to the cutting edge, the top of the blade is connected to a connecting platform slidably connected to the tool holder, a spring a is connected between the connecting platform and the tool holder, and the bottom of the connecting plate is rotatably connected to a connecting rod a rotatably connected to the connecting platform.

4. A construction steel bar cutting device according to claim 2, characterized in that: The positioning component includes positioning openings opened at the top and bottom of the positioning tube, a positioning platform is slidably connected in the positioning opening, a spring b is connected between the positioning platform and the positioning tube, two connecting rods b are rotatably connected to the positioning platform, a connecting rod a is provided on one side of the connecting frame, and one end of the connecting rod b is rotatably connected to the connecting rod a.

5. A construction steel bar cutting device according to claim 2, characterized in that: The feeding component is capable of feeding the blade at a predetermined time interval a, so that the blade advances a predetermined distance a each time, and maintains the current feeding position for a predetermined time a1 after each feeding; The feeding component also includes a connecting port opened on the workbench, the connecting frame is slidably connected to the connecting port, a linear driving member is fixed in the connecting port, the linear driving member is a double-rod hydraulic cylinder, two groups of moving platforms are slidably connected in the connecting port, the two groups of moving platforms are respectively located at the two ends of the linear driving member, corresponding to the two connecting frames, a connecting rod c rotatably connected to the moving platform and connected to the connecting frame, two upper and lower adjacent moving platforms are respectively provided with progressive openings on both sides close to each other, the progressive openings include an inclined section and a straight section, the thickness of the moving platform gradually increases when it approaches the adjacent connecting frame, progressive push plates are connected to the piston shafts at both ends of the linear driving member, and a spring c is connected between the connecting frame and the connecting port.

6. A construction steel bar cutting device according to claim 4, characterized in that: The positioning component can fix the steel bars in the positioning tube when the sliding frame moves away from the tool holder, and release the fixation of the steel bars when the sliding frame moves closer to the tool holder; The positioning component also includes a connecting rod b connected to the connecting frame, and the connecting rod b is slidably connected to the connecting rod a. A plurality of wedge-shaped openings are provided in the connecting rod a. A wedge-shaped strip adapted to the wedge-shaped opening is slidably connected to the connecting rod b, and a spring d is connected between the wedge-shaped strip and the connecting rod b.

7. A construction steel bar cutting device according to claim 2, characterized in that: A connecting roller is rotatably connected to the support frame on the left side, the roller shaft is fixed to the connecting roller, a gear c is connected to the roller shaft, a gear d meshing with the gear c is provided on the support frame, a rack meshing with the gear d is provided on the connecting frame, and a ratchet mechanism is provided between the gear c and the connecting roller.

8. A construction steel bar cutting device according to claim 7, characterized in that: The support frame is provided with a connecting opening, the connecting roller is arranged in the connecting opening, a connecting ring is slidably connected in the connecting opening, the connecting roller is rotatably connected to the connecting ring, a spring e is connected between the connecting ring and the connecting opening, a bracket is fixed on the connecting ring, the gear d is rotatably connected to the bracket, a push rod is connected to one side of the connecting frame, the rack is slidably connected to the push rod, and a spring f is connected between the rack and the push rod, and a rubber pad is provided on the roller shaft.

9. A construction steel bar cutting device according to claim 1, characterized in that: The support frame is also rotatably connected to a plurality of stabilizing shafts, the support frame is slidably connected to a sliding shaft, the stabilizing shaft is rotatably connected to the sliding shaft, and a spring e is also connected between the sliding shaft and the support frame.

10. A steel bar cutting process, applicable to a steel bar cutting device for construction according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: Step 1: Pass the steel bar from one end of the support frame into the support frame on the left side of the workbench, through the roller shaft, the stabilizing shaft, the positioning tube knife holder, and finally out of the support frame on the right side; Step 2: The motor drives the sliding frame to rotate through the gear transmission, driving the knife holder and the blade to rotate, and the feeding component starts to work. The sliding frame generates displacement while rotating, pushing the blade to gradually feed toward the axis of the steel bar, and the positioning component fixes the steel bar; Step 3: the feeding component feeds the blade at a predetermined time interval a, advances a predetermined distance a each time, and maintains a pause time a1 at the current feeding position; Step 4: When the cutting is completed, the sliding frame starts to reset, and the positioning component unlocks the steel bar when the sliding frame 108 returns to its position; Step 5: When the sliding frame returns to the preset distance, the roller shaft rotates to convey the steel bar to a predetermined length; Step 6: After the blade returns to its original position, repeat step 3.

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