A reinforcing bar cutting machine

Abstract

The application relates to a reinforcing steel bar cutting machine, belonging to the field of material cutting and processing technology, which comprises a rack, an operation table installed on the rack, two groups of knife holders oppositely arranged on the operation table, cutting blades which can be detachably installed on each group of knife holders, and a cutting driving element for driving one group of knife holders to move towards the other group of knife holders to cut the reinforcing steel bar, a cutting gap for placing the reinforcing steel bar is formed between the two groups of knife holders, and the application further comprises a clamping assembly installed on the end of the operation table far from the knife holders and used for clamping the reinforcing steel bar and a protective cover assembly installed on the operation table and covering the outer side of the knife holders; the clamping assembly comprises two groups of clamping jaws oppositely arranged and used for clamping the reinforcing steel bar, sliding blocks installed on the bottom of the clamping jaws and used for allowing the two groups of clamping jaws to oppositely slide, and a bidirectional screw rod screw-installed on the bottom of the sliding blocks and used for driving the two groups of clamping jaws to synchronously approach or move away from each other, and the operation table is provided with sliding grooves for allowing the two groups of sliding blocks to slide. The application has the effect of effectively preventing safety accidents.

Description

Technical Field

[0001] This utility model relates to the field of material cutting and processing technology, and in particular to a rebar cutting machine. Background Technology

[0002] Steel bars are a basic material used in construction. In today's standardized production society, steel bars are generally produced according to fixed specifications according to current standards. This means that in actual use, when there are special circumstances requiring shorter steel bars, the steel bars need to be cut.

[0003] In existing technology, rebar cutting machines typically include a machine body, an operating table, and a foot switch. A blade holder is mounted on the machine body, equipped with two cutting blades. During operation, the operator first places the rebar on the operating table and holds it securely. Then, the foot switch is activated, and the two blades move towards each other, applying pressure to the rebar. Because the two blades are staggered for cutting, during the cutting process, the iron bar held by the operator can bend in the opposite direction of the blade force, causing the operator's hand to be pulled towards the blade holder by the iron bar, posing a serious safety hazard.

[0004] In view of the above-mentioned related technologies, in order to effectively prevent safety accidents, the inventors believe that it is necessary to provide a rebar cutting machine. Utility Model Content

[0005] In order to effectively prevent safety accidents, this application provides a rebar cutting machine.

[0006] This application provides a rebar cutting machine, which adopts the following technical solution: A rebar cutting machine includes a frame, an operating table mounted on the frame, two sets of blade holders arranged opposite to each other on the operating table, cutting blades detachably mounted on each set of blade holders, and a cutting drive unit for driving one set of blade holders to move towards the other set of blade holders to cut rebar. A cutting gap is formed between the two sets of blade holders for inserting rebar. The machine also includes a clamping assembly mounted on the operating table away from the blade holders for clamping rebar and a protective cover assembly mounted on the operating table and covering the outside of the blade holders. The clamping assembly includes two sets of jaws arranged opposite to each other for clamping rebar, a slider mounted on the bottom of the jaws for relative sliding of the two sets of jaws, and a bidirectional screw threaded on the bottom of the slider for driving the two sets of jaws to move synchronously closer or further apart. The operating table is provided with a sliding groove for sliding of the two sets of sliders.

[0007] By adopting the above technical solution, the reinforcing bar can be placed in the cutting gap first, and the bidirectional screw drives the two sets of jaws to approach synchronously to clamp the reinforcing bar; then, the cutting drive drives one set of blade holders to move to the other set of blade holders to cut the reinforcing bar. This can prevent the reinforcing bar from bending during cutting and causing the operator's hand to be pinched by the blade holder. In addition, the protective cover assembly covering the outside of the blade holder can prevent the debris generated during the cutting process from flying and injuring people, thus effectively preventing safety accidents.

[0008] Optionally, a first gear is fixedly sleeved in the middle of the bidirectional screw, a drive motor is installed at the bottom of the operating table, and the output shaft of the drive motor is fixedly connected to a second gear that meshes with the first gear.

[0009] By adopting the above technical solution, by fixing the first gear in the middle of the bidirectional screw, installing the drive motor at the bottom of the operating table, and connecting the output shaft of the drive motor to the second gear meshing with the first gear, the drive motor can drive the bidirectional screw to rotate through gear transmission, thereby making the two sets of grippers move closer or further apart synchronously, which facilitates automatic control of the opening and closing of the grippers to clamp the steel bars.

[0010] Optionally, the gripper is detachably mounted on the top of the slider, and the bottom of the gripper has a locking rod mounted on the slider. The slider has a locking through hole for the locking rod to be inserted. The locking rod has a locking protrusion symmetrically arranged circumferentially at one end near the slider, and the inner wall of the locking through hole has a locking groove that engages with the locking protrusion.

[0011] By adopting the above technical solution, the gripper can be detachably installed on the top of the slider. The locking rod is inserted into the locking through hole, and the locking protrusion engages with the locking groove to achieve a detachable connection between the gripper and the slider. This facilitates the replacement of the gripper and adapts to the clamping and fixing of different types of steel bars.

[0012] Optionally, the locking groove includes a first groove arranged circumferentially and a second groove connected to the first groove and arranged axially along the locking through hole.

[0013] By adopting the above technical solution, the specific structure of the locking groove is disclosed. The locking rod at the bottom of the gripper is inserted into the locking through hole of the slider, so that the locking protrusion moves axially along the second groove and then rotates circumferentially along the first groove, thereby realizing the detachable installation of the gripper and the slider.

[0014] Optionally, the end face of the locking protrusion is provided with a plunger hole and a ball spring plunger is installed in the plunger hole, and the slider is provided with a snap-fit ​​groove on the inner wall of the first groove for the ball spring plunger to snap into the plunger ball.

[0015] By adopting the above technical solution, a plunger hole is opened on the locking protrusion end face of the locking rod at the bottom of the gripper and a ball spring plunger is installed. The slider is provided with a locking groove on the inner wall of the first groove, so that the plunger ball of the ball spring plunger can be locked in the locking groove, thereby achieving a more stable connection between the gripper and the slider, preventing the gripper from accidentally loosening during operation, and enhancing the stability and reliability of the clamping assembly of the rebar cutter.

[0016] Optionally, the inner side of the gripper is fitted with a rubber anti-slip layer.

[0017] By adopting the above technical solution, a rubber anti-slip layer is embedded on the inner side of the gripper, which can increase the friction between the gripper and the steel bar, allowing the gripper to better hold the steel bar and prevent the steel bar from slipping during the cutting process, thereby improving the stability and safety of the cutting.

[0018] Optionally, the tool holder has a blade mounting slot for mounting a blade, the side wall of the tool holder has a threaded hole communicating with the blade mounting slot, the side of the cutting blade has a mounting through hole corresponding to the threaded hole, and the side wall of the tool holder is threaded with a locking bolt in the threaded hole and the mounting through hole.

[0019] By adopting the above technical solution, the cutter holder and the cutting blade are connected through the blade mounting groove, threaded hole, mounting through hole and locking bolt, so that the cutting blade can be detached and installed, which facilitates the replacement and maintenance of the cutting blade.

[0020] Optionally, the protective cover assembly includes a protective cover body rotatably hinged to the operating table and a touch sensor mounted on the operating table and cooperating with the protective cover body. The top of the protective cover body also has a transparent viewing window. The touch sensor is linked to the cutting switch of the cutting drive.

[0021] The specific structure of the protective cover assembly is disclosed by adopting the above technical solution. The main body of the protective cover is rotatably hinged to the operating table, allowing for flexible rotation and easy opening and closing for placing and cutting reinforcing bars. Furthermore, the touch sensor, which works in conjunction with the main body of the protective cover, is linked to the start switch of the cutting drive. This ensures that the start switch of the cutting drive is activated only when the main body of the protective cover is closed and covering the cutting assembly in the installation position. The transparent window at the top of the main body of the protective cover allows the operator to observe the cutting process, preventing operational errors due to obstructed vision and effectively preventing safety accidents.

[0022] Optionally, the operating platform is also equipped with a feeding hopper for easy feeding, and the operating platform is also equipped with a downwardly inclined conveyor seat at the discharge end of the two sets of cutter holders.

[0023] By adopting the above technical solution, the feeding hopper facilitates the feeding of steel bars, and the conveyor seat facilitates the discharge of steel bars after cutting.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. A rebar cutting machine, wherein the rebar is first placed in the cutting gap, and a bidirectional screw drives two sets of jaws to approach synchronously to clamp the rebar; subsequently, a cutting drive unit drives one set of blade holders to move towards another set of blade holders to cut the rebar; this can prevent the rebar from bending during cutting and causing the operator's hand to be pinched by the blade holders, and the protective cover assembly covering the outside of the blade holders can prevent debris generated during the cutting process from flying and injuring people, thereby effectively preventing safety accidents; 2. By embedding a rubber anti-slip layer on the inside of the gripper and setting anti-slip texture, the friction between the gripper and the rebar can be increased, allowing the gripper to better hold the rebar; 3. The cutting blade can be detached and installed by means of blade mounting groove, threaded hole, mounting through hole and locking bolt between the blade holder and the cutting blade, which facilitates the replacement and maintenance of the cutting blade. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of a rebar cutting machine according to an embodiment of this application.

[0026] Figure 2 This is a partial structural schematic diagram of a rebar cutting machine according to an embodiment of this application.

[0027] Figure 3 This is an exploded view of the installation and assembly of the tool holder and the cutting blade in an embodiment of this application.

[0028] Figure 4 This is a top view of the clamping component in an embodiment of this application.

[0029] Figure 5 yes Figure 2 A magnified view of a portion of point A in the middle.

[0030] Figure 6 This is a cross-sectional schematic diagram of the clamping component in an embodiment of this application.

[0031] Figure 7 This is a cross-sectional schematic diagram of the locking rod and slider being installed in cooperation in an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Operating table; 21. Guide groove; 22. Feed hopper; 23. Conveyor seat; 24. Slide rail; 3. Tool holder; 31. Blade mounting groove; 32. Threaded hole; 33. Locking bolt; 4. Cutting blade; 41. Mounting through hole; 5. Cutting drive component; 6. Clamping assembly; 61. Gripper; 611. Rubber anti-slip layer; 6111. Anti-slip texture; 62. Slider; 621. Locking through hole; 622, Locking groove; 6221, First groove; 62211, Snap-fit ​​groove; 6222, Second groove; 63, Bidirectional screw; 631, First gear; 632, Second gear; 633, Drive motor; 64, Locking rod; 641, Locking protrusion; 6411, Plunger hole; 6412, Ball spring plunger; 7, Protective cover assembly; 71, Protective cover body; 711, Transparent window; 72, Touch sensor. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0034] This application discloses a rebar cutting machine. (Refer to...) Figure 1 and Figure 2 A rebar cutting machine includes a frame 1, an operating table 2 mounted on the frame 1, two sets of blade holders 3 arranged opposite each other on the operating table 2, cutting blades 4 detachably mounted on each set of blade holders 3, a cutting drive 5 for driving one set of blade holders 3 to move towards the other set of blade holders 3 to cut rebar, a clamping assembly 6 mounted on the end of the operating table 2 away from the blade holders 3 for clamping rebar, and a protective cover assembly 7 mounted on the operating table 2 and covering the outside of the blade holders 3. One set of blade holders 3 is fixed to the operating table 2, and the other set of blade holders 3 is fixed to the output end of the cutting drive 5, forming a cutting gap between the two sets of blade holders 3 for inserting rebar. During operation, the reinforcing bar is first placed in the cutting gap, then the clamping assembly 6 clamps and fixes the reinforcing bar. Subsequently, the cutting drive unit drives one set of cutter holders 3 to move to another set of cutter holders 3 to cut the reinforcing bar. This prevents the reinforcing bar from bending during cutting and causing injury to the operator's hand from being pinched by the cutter holders 3. Furthermore, the protective cover assembly 7 covering the outside of the cutter holders 3 effectively prevents flying debris from injuring people during the cutting process, thus effectively preventing safety accidents. In this embodiment, the cutting drive unit 5 is a hydraulic cylinder, wherein the piston rod of the hydraulic cylinder is fixedly connected to another set of movable cutter holders 3.

[0035] Reference Figure 1 and Figure 2 The operating platform 2 is also equipped with a feeding hopper 22 for easy feeding of steel bars. The operating platform 2 is also equipped with a downwardly inclined conveyor seat 23 at the discharge end of the two sets of cutter holders 3. The conveyor seat 23 allows the cut steel bars to slide down automatically for easy collection.

[0036] Reference Figure 3 The cutter holder 3 has a blade mounting groove 31 for mounting the blade. A threaded hole 32 communicating with the blade mounting groove 31 is formed on the side wall of the cutter holder 3. A mounting through hole 41 corresponding to the threaded hole 32 is formed on the side of the cutting blade 4. A locking bolt 33 is threaded onto the side wall of the cutter holder 3, connecting the threaded hole 32 and the mounting through hole 41. The locking bolt 33 secures the cutting blade 4 to the cutter holder 3, allowing for detachable installation and replacement, and facilitating maintenance.

[0037] Reference Figure 4 The clamping assembly 6 includes two sets of opposing jaws 61 for clamping reinforcing bars, a slider 62 mounted on the bottom of the jaws 61 for relative sliding of the two sets of jaws 61, and a bidirectional screw 63 threadedly mounted on the bottom of the slider 62 for driving the two sets of jaws 61 to move synchronously closer or further apart. The operating table 2 is provided with a slide groove 24 for the two sets of sliders 62 to slide. The two sets of sliders 62 respectively engage with two threaded sections of the bidirectional screw.

[0038] Reference Figure 5 The inner side of the gripper 61 is fitted with a rubber anti-slip layer 611, and the surface of the rubber anti-slip layer 611 is provided with anti-slip texture 6111. By fitting the rubber anti-slip layer 611 inside the gripper 61, the friction between the gripper 61 and the reinforcing bar can be increased, so that the gripper 61 can better clamp the reinforcing bar.

[0039] Reference Figure 6 A first gear 631 is fixedly sleeved in the middle of the bidirectional screw 63. A drive motor 633 is installed at the bottom of the operating table 2. The output shaft of the drive motor 633 is fixedly connected to a second gear 632 that meshes with the first gear 631. After the drive motor 633 starts, it drives the first gear 631 to rotate through the second gear 632, thereby rotating the bidirectional screw 63 and realizing the synchronous movement of the two sets of grippers 61. This enables the clamping and releasing of the reinforcing bars, thus stably clamping reinforcing bars of different diameters.

[0040] Reference Figure 6 and Figure 7 The gripper 61 is detachably mounted on the top of the slider 62. The bottom of the gripper 61 has a locking rod 64 mounted on the slider 62. The slider 62 has a locking through hole 621 for the locking rod 64 to be inserted. The locking rod 64 has a locking protrusion 641 symmetrically arranged around one end near the slider 62. The inner wall of the locking through hole 621 has a locking groove 622 that engages with the locking protrusion 641.

[0041] Reference Figure 6 and Figure 7The locking groove 622 includes a first groove 6221 arranged circumferentially and a second groove 6222 connected to the first groove 6221 and arranged axially along the locking through hole 621. A plunger hole 6411 is provided on the end face of the locking protrusion 641, and a ball-head spring plunger 6412 is installed in the plunger hole 6411. The slider 62 has a locking groove 62211 on the inner wall of the first groove 6221 for the ball-head spring plunger 6412 to engage with its ball bearings. When installing the gripper 61, the locking rod 64 is inserted into the locking through hole 621, causing the locking protrusion 641 to slide down along the second groove 6222. Then, the gripper 61 is rotated to allow the locking protrusion 641 to enter the first groove 6221 for engagement. The end face of the locking protrusion 641 is provided with a plunger hole 6411 and a ball spring plunger 6412 is installed in the plunger hole 6411. The slider 62 is provided with a snap-fit ​​groove 62211 on the inner wall of the first groove 6221 for the ball spring plunger 6412 to snap into the plunger ball. The ball spring plunger 6412 can further fix the clamp 61 and prevent it from loosening.

[0042] Reference Figure 1 The protective cover assembly 7 includes a protective cover body 71 rotatably hinged to the operating table 2 and a touch sensor 72 mounted on the operating table 2 and cooperating with the protective cover body 71. A transparent viewing window 711 is also provided on the top of the protective cover body 71. The touch sensor 72 is linked to the start switch of the cutting drive component 5. In this embodiment, the touch sensor 72 is a force sensor. During operation, when the protective cover body 71 closes down and covers the cutting component, it touches the force sensor. The force sensor then sends an electrical signal to the start switch of the cutting drive component 5, triggering the system to start and thus beginning the cutting of the reinforcing steel. This ensures that cutting can only be performed when the protective cover is completely closed, providing a safety interlock.

[0043] The implementation principle of a rebar cutting machine according to an embodiment of this application is as follows: When the rebar cutting machine is working, the rebar is first placed in the cutting gap, then the clamping assembly 6 clamps and fixes the rebar, and then the cutting drive drives a set of blade holders 3 to move to another set of blade holders 3 to cut the rebar. This can prevent the rebar from bending during cutting and causing the operator's hand to be pinched by the blade holders 3. In addition, the protective cover assembly 7 covering the outside of the blade holders 3 can effectively prevent the debris generated during the cutting process from flying and injuring people, thereby effectively preventing safety accidents.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rebar cutting machine, comprising a frame (1), an operating table (2) mounted on the frame (1), two sets of blade holders (3) arranged opposite to each other on the operating table (2), cutting blades (4) detachably mounted on each set of blade holders (3), and a cutting drive (5) for driving one set of blade holders (3) to move towards the other set of blade holders (3) to cut rebar, wherein a cutting gap for inserting rebar is formed between the two sets of blade holders (3), characterized in that, It also includes a clamping assembly (6) installed on the end of the operating table (2) away from the knife holder (3) for clamping the reinforcing bar and a protective cover assembly (7) installed on the operating table (2) and covering the outside of the knife holder (3); the clamping assembly (6) includes two sets of oppositely arranged jaws (61) for clamping the reinforcing bar, a slider (62) installed on the bottom of the jaws (61) for the two sets of jaws (61) to slide relative to each other, and a bidirectional screw (63) threaded on the bottom of the slider (62) and driving the two sets of jaws (61) to move closer or further away synchronously. The operating table (2) is provided with a sliding groove (24) for the two sets of sliders (62) to slide.

2. A rebar cutting machine according to claim 1, characterized in that, The first gear (631) is fixedly sleeved in the middle of the bidirectional screw (63), and a drive motor (633) is installed at the bottom of the operating table (2). The output shaft of the drive motor (633) is fixedly connected to a second gear (632) that meshes with the first gear (631).

3. A rebar cutting machine according to claim 1, characterized in that, The gripper (61) is detachably mounted on the top of the slider (62). The bottom of the gripper (61) has a locking rod (64) mounted on the slider (62). The slider (62) has a locking through hole (621) for the locking rod (64) to be inserted. The locking rod (64) has a locking protrusion (641) symmetrically arranged around one end near the slider (62). The inner wall of the locking through hole (621) has a locking groove (622) that engages with the locking protrusion (641).

4. A rebar cutting machine according to claim 3, characterized in that, The locking groove (622) includes a first groove (6221) arranged circumferentially and a second groove (6222) connected to the first groove (6221) and arranged axially along the locking through hole (621).

5. A rebar cutting machine according to claim 4, characterized in that, The end face of the locking protrusion (641) is provided with a plunger hole (6411) and a ball spring plunger (6412) is installed in the plunger hole (6411). The slider (62) is provided with a snap-fit ​​groove (62211) on the inner wall of the first groove (6221) for the ball spring plunger (6412) to snap into the plunger ball.

6. A rebar cutting machine according to claim 1, characterized in that, The inner side of the gripper (61) is fitted with a rubber anti-slip layer (611).

7. A rebar cutting machine according to claim 1, characterized in that, The protective cover assembly (7) includes a protective cover body (71) rotatably hinged to the operating table (2) and a touch sensor (72) mounted on the operating table (2) and cooperating with the protective cover body (71). The top of the protective cover body (71) is also provided with a transparent window (711). The touch sensor (72) is linked to the start switch of the cutting drive (5).

8. A rebar cutting machine according to claim 1, characterized in that, The blade holder (3) has a blade mounting groove (31) for mounting the blade. The side wall of the blade holder (3) has a threaded hole (32) that connects to the blade mounting groove (31). The side of the cutting blade (4) has a mounting through hole (41) corresponding to the threaded hole (32). The side wall of the blade holder (3) is threaded with a locking bolt (33) in the threaded hole (32) and the mounting through hole (41).

9. A rebar cutting machine according to claim 1, characterized in that, The operating table (2) is also equipped with a feeding bin (22) for easy feeding, and the operating table (2) is also equipped with a downwardly inclined conveyor seat (23) at the discharge end of the two sets of knife holders (3).

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