Portable building metal material cutting machine and using method thereof

Abstract

The invention discloses a portable building metal material cutting machine and a using method thereof.The cutting machine comprises a box body, an opening is formed in one side of the upper surface of the box body, and the cutting machine further comprises a protection mechanism located at the position, close to the opening, of the upper surface of the box body; a cutting mechanism is arranged in the box body, the cutting mechanism comprises a cutting motor, and the output end of the cutting motor is in transmission connection with a cutting blade; clamping mechanisms are arranged on the two sides of the opening, each clamping mechanism comprises cushion blocks which are symmetrically and fixedly arranged at the opening, a fixed clamping block is fixedly connected to one side of the upper surface of each cushion block, and a movable clamping block is movably connected to the other side of the upper surface of each cushion block. The invention belongs to the technical field of building construction equipment, and effectively solves the problems that a steel bar cutting device is inconvenient to carry and move, and certain potential safety hazards exist in the using process.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction equipment, and specifically refers to a portable building metal material cutting machine and a use method thereof. Background Art

[0002] Steel is an indispensable material in people's daily production and life, especially on construction sites, where it is widely demanded and used. Most of the steel used in construction are long round steel bars, round and square steel pipes and other metal materials. Construction workers often cut long round steel bars, round and square steel pipes and other metal materials into the required length according to construction needs.

[0003] However, in the prior art, most of the steel bar cutting devices currently on the market are large in size and heavy in weight, which are not easy to carry and move, causing inconvenience to the operation at the construction site. In addition, the existing steel bar cutting devices also have certain safety hazards during use, such as the cutting blades are easy to break and splash, the operators are easy to be burned by cutting sparks, and the sparks flying during the cutting process are easy to cause fires. Therefore, it is necessary to design a portable, safe and practical construction metal material cutting machine.

[0004] Through semantic search, a technical solution close to the present application was retrieved: CN215746113U is a steel bar cutting device for construction, belonging to the technical field of cutting devices, including a base, a cutting machine, a support plate, a first servo motor, a first screw, an intermediate block, a screw block, a sliding rod, a first clamping block, a second clamping block, a convex slide groove, a convex slide bar, a threaded hole, a long axis bolt, an inverted concave cover plate, a second servo motor, a control panel, a second screw and a lifting plate. Compared with traditional cutting devices, the positions of the two second clamping blocks in the device can be adjusted up and down, and steel bars of different diameters can be clamped. When the cutting machine cuts the steel bars, the second arc groove on the pressure plate can press the upper end surface of the steel bars. The surface of the steel bars can be clamped in all directions through the two second clamping blocks and the pressure plate, thereby improving the stability of the cutting machine when cutting the steel bars.

[0005] Through semantic search, another technical solution close to the present application was retrieved: a construction cutting machine according to CN112536848A comprises a frame, first slide grooves are symmetrically provided at both ends of the upper surface of the frame, a rectangular frame is slidably connected to the inner wall of the first slide groove, a first threaded hole is provided at the bottom of the rectangular frame, and a first threaded rod is rotatably connected to the inner wall of the two ends of the first slide groove through a bearing, a first motor is fixedly installed on one side of the frame, the output end of the first motor is fixedly connected to the first threaded rod, a height adjustment device is installed on the inner wall of the rectangular frame, a moving device is installed on one side of the height adjustment device, and a cutting device with a changeable rotation angle is rotatably connected to the bottom end of the moving device through a bearing, and clamping devices are installed on both sides of the frame. This invention facilitates cutting of building panels at different angles and different lengths according to specific sizes, improves the cutting efficiency of building panels, is easy to operate, and provides convenience for construction personnel.

[0006] However, the above-mentioned reference document is not suitable for cutting objects of different sizes and shapes when used, and sparks splash from both sides during cutting, which cannot protect the safety of the operator;

[0007] Secondly, the above-mentioned equipment is inconvenient to move and carry, lacks other portable functional designs, and is greatly restricted by usage scenarios.

[0008] This application is compared with the reference document:

[0009] 1. The present invention adopts a portable design: the box is made of metal material, which is light and strong, and is provided with a handle for easy carrying, and is suitable for various construction sites.

[0010] 2. The present invention is provided with protective mechanisms such as protective covers, fireproof covers, transparent high-temperature resistant glass, etc., which effectively prevent the cutting blade from breaking and splashing, cutting sparks from burning operators, and sparks from causing fires.

[0011] 3. The present invention can clamp steel bars of different diameters, square and round steel pipes and other metal materials by setting a clamping mechanism, and has a wide range of applications. The cutting mechanism is driven by a motor and has high cutting efficiency.

[0012] The invention has a simple structure, is easy to implement, is convenient and quick to construct, and has cheap materials and is easy to promote, which is obviously superior to the comparative documents. Summary of the invention

[0013] The technical problem to be solved by the present invention is that it is inconvenient to place objects of different sizes and shapes into the steel bar cutting device, and sparks are easily splashed from both sides during cutting, which poses certain safety hazards and is inconvenient to carry and move.

[0014] In order to achieve the above object, the present invention adopts the following technical solutions:

[0015] A portable construction metal material cutting machine comprises a box body, one side of the upper surface of the box body is provided with an opening, and further comprises a protection mechanism located on the upper surface of the box body near the opening;

[0016] A cutting mechanism is arranged inside the box, and the cutting mechanism comprises a cutting motor, and an output end of the cutting motor is transmission-connected with a cutting blade;

[0017] Clamping mechanisms are arranged on both sides of the opening, and the clamping mechanisms include pads that are symmetrically and fixedly arranged at the openings, one side of the upper surface of the pad is fixedly connected to a fixed clamping block, and the other side of the upper surface of the pad is movably connected to a movable clamping block.

[0018] Furthermore, the protection mechanism includes a protection cover, a fireproof cover is fixedly provided on the lower surface of the protection cover, transparent soft door curtain narrow pieces are symmetrically provided at both ends of the lower surface of the protection cover, transparent high-temperature resistant glass is provided at the center of the surface of the protection cover, a magnetic block is fixedly provided at the lower part of the protection cover, and a magnetic groove assembled with the magnetic block is opened on the upper part of the box body.

[0019] Furthermore, a movable groove is provided on the upper part of the cushion block, and a screw is rotatably connected to the inner cavity of the movable groove. The screw is threadably connected to the movable clamping block, and one end of the screw extends through and extends to the outside of the box body.

[0020] Furthermore, a handle is fixedly connected to the outside of the box body, the outer side walls of the fixed clamp block and the movable clamp block are both provided with grooves, the inner cavity of the groove is fixedly provided with a guide rod, and a connecting block is slidably provided on the surface of the guide rod inside the fixed clamp block.

[0021] Furthermore, a limiting rod is fixedly connected to the connecting block, a sliding groove is provided at the other end of the limiting rod, and a slider is slidably provided in the inner cavity of the sliding groove, and the slider is slidably connected to a guide rod arranged in the inner cavity of the groove, and the connecting block and the slider are fixedly connected to the inner top wall of the groove through a fourth spring.

[0022] Furthermore, a third spring which is relatively distributed and symmetrical to each other is fixed inside the protective cover, one end of the third spring is fixedly connected to a connecting rod, and the connecting rod is slidably connected to the protective cover, a Z-shaped groove is provided on the upper surface of the protective cover, a Z-shaped block is slidably connected inside the Z-shaped groove, and one end of the Z-shaped block is fixedly connected to the upper end of the connecting rod.

[0023] Furthermore, an L-shaped plate is fixedly provided on the lower surface of the cutting motor, a limiting groove for sliding connection with the L-shaped plate is opened inside the box, the outer side of the L-shaped plate is fixedly connected to the inner wall of the box through a second spring, an electric telescopic rod is fixedly provided inside the box and in the middle of the L-shaped plate, and the output end of the electric telescopic rod is fixedly connected to the outer side of the L-shaped plate.

[0024] Furthermore, a control end is fixedly provided on one side of the upper surface of the box body close to the protective cover, and the control end is electrically connected to the cutting motor and the electric telescopic rod respectively. A charging interface is provided on one end of the box body close to the control end, and the charging interface is electrically connected to the control end.

[0025] Furthermore, a battery compartment is provided on the outside of the box body, a removable lithium battery is slidably connected to the inner cavity of the battery compartment, a plurality of first springs are fixedly connected to the inner top wall and the inner bottom wall of the battery compartment, one end of the first spring is fixedly connected to a limit plate, a T-block is fixedly connected to the limit plate, and linear grooves are symmetrically provided on the outer wall of the box body and at both ends of the battery compartment, and the T-blocks are slidably connected to the linear grooves.

[0026] The present invention provides a method for using a portable building metal material cutting machine, comprising the following steps:

[0027] Step 1: First, flip the protective cover 90 degrees to separate the magnetic block from the magnetic slot;

[0028] Step 2: After placing the steel bars, flip the protective cover to reset it and use the fireproof cover to protect the processing;

[0029] Step 3: The limit rod is moved downward to constrain and fix the steel bars, so as to fix steel bars of different diameters;

[0030] Step 4: The cutting motor drives the cutting blade to rotate at high speed for cutting;

[0031] Step 5: The L-shaped plate slides in the limiting groove and drives the cutting motor and the cutting disc to move to one side of the steel bar for cutting.

[0032] The beneficial effects achieved by the present invention using the above structure are as follows:

[0033] 1. The present invention adopts a portable design: the box is made of metal material, which is light and strong, and is equipped with a handle for easy carrying, and is suitable for various construction sites;

[0034] 2. The present invention is provided with protective covers, fireproof covers, transparent high-temperature resistant glass and other protective mechanisms to effectively prevent the cutting blade from breaking and splashing, cutting sparks from burning operators, and sparks from causing fires, etc.;

[0035] 3. The present invention can clamp steel bars of different diameters, square and round steel pipes and other metal materials by setting a clamping mechanism, and has a wide range of applications. The cutting mechanism is driven by a motor and has high cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the overall structure of a portable construction metal material cutting machine provided by the present invention;

[0037] Figure 2 A portable building metal material cutting machine provided by the present invention Figure 1 A schematic diagram of the structure enlargement in the middle;

[0038] Figure 3 A schematic side cross-sectional view of the overall structure of a portable construction metal material cutting machine provided by the present invention;

[0039] Figure 4 A portable building metal material cutting machine provided by the present invention Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0040] Figure 5 A schematic structural diagram of a clamping mechanism of a portable construction metal material cutting machine provided by the present invention.

[0041] Among them, 1. box body; 2. handle; 3. cutting motor; 4. cutting blade; 5. protective cover; 6. fixed clamp block; 7. movable clamp block; 8. screw; 9. fireproof cover; 10. transparent high temperature resistant glass; 11. transparent soft door curtain narrow piece; 12. charging interface; 13. magnetic block; 14. magnetic groove; 15. pad; 16. moving groove; 17. control terminal; 18. battery compartment; 19. removable lithium battery; 20. limit plate; 21. first spring; 22. T-block; 23. linear groove; 24. limit groove; 25. L-plate; 26. second spring; 27. electric telescopic rod; 28. third spring; 29. ​​connecting rod; 30. Z-block; 31. Z-groove; 32. groove; 33. guide rod; 34. fourth spring; 35. connecting block; 36. limit rod; 37. slide groove; 38. slider. DETAILED DESCRIPTION

[0042] 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.

[0043] See also Figure 1-5 The present invention provides a technical solution: a portable building metal material cutting machine, comprising a box body 1, an opening is provided on one side of the upper surface of the box body 1, and a protective mechanism is provided on the upper surface of the box body 1 near the opening, the protective mechanism comprises a protective cover 5, a fireproof cover 9 is fixedly provided on the lower surface of the protective cover 5, transparent soft door curtain narrow pieces 11 are symmetrically provided at both ends of the lower surface of the protective cover 5, and a transparent high-temperature resistant glass 10 is provided at the center of the surface of the protective cover 5;

[0044] It should be noted that the design of the protective cover 5, the fireproof cover 9 and the transparent soft door curtain narrow piece 11 is convenient for placing the cutting object into the box body 1, and can be suitable for cutting objects of different sizes and shapes, ensuring that sparks are blocked from splashing from both sides during cutting to the maximum extent, protecting the safety of the operator, and the transparent high-temperature resistant glass 10 is convenient for observing the fixing state of the cutting object in the box body 1;

[0045] A cutting mechanism is arranged inside the box body 1, and the cutting mechanism includes a cutting motor 3, and the output end of the cutting motor 3 is transmission-connected with a cutting blade 4; clamping mechanisms are arranged on both sides of the opening, and the clamping mechanism includes pads 15 that are symmetrically and fixedly arranged at the opening, one side of the upper surface of the pad 15 is fixedly connected with a fixed clamping block 6, and the other side of the upper surface of the pad 15 is movably connected with a movable clamping block 7, and a movable groove 16 is opened on the upper part of the pad 15, and a screw 8 is rotatably connected to the inner cavity of the movable groove 16, and the screw 8 is threadedly connected to the movable clamping block 7, and one end of the screw 8 extends through to the outside of the box body 1.

[0046] A handle 2 is fixedly connected to one side of the outer surface of the box body 1, and a groove 32 is provided on the outer side walls of the fixed clamp block 6 and the movable clamp block 7. A guide rod 33 is fixedly provided in the inner cavity of the groove 32, and a connecting block 35 is slidably provided on the surface of the guide rod 33 located inside the fixed clamp block 6; a limit rod 36 is fixedly connected to the connecting block 35, and a slide groove 37 is provided at the other end of the limit rod 36, and a slider 38 is slidably provided in the inner cavity of the slide groove 37, and the slider 38 is slidably connected to the guide rod 33 provided in the inner cavity of the groove 32, and the connecting block 35 and the slider 38 are fixedly connected to the inner top wall of the groove 32 through a fourth spring 34;

[0047] It should be noted that the box body 1 is a rectangular structure made of light steel, and is light, strong and corrosion-resistant. The cutting blade 4 is made of high-strength alloy steel, has a sharp blade and good wear resistance, and can quickly and accurately cut steel bars of various specifications. The handle 2 is designed for easy carrying, and the purpose of the opening is to put in or take out the steel bars, which improves the convenience and practicality of the device and is suitable for various construction sites. The limit rod 36 is lifted upward, and the limit rod 36 drives the connecting block 35 and the slider 38 to slide along the limit rod 33 and compress the fourth spring 34, and then the screw rod 8 is turned, the screw rod 8, the screw rod 8 drives the movable clamping block 7 to move along the movable groove 16 to one side of the fixed clamping block 6, and the movable clamping block 7 drives the slider 38 to move along the slide groove 37 to one side of the fixed clamping block 6, and the fourth spring 34 drives the limit rod 36 to move downward through the connecting block 35 and the slider 38 to constrain and fix the steel bars, which is convenient for subsequent cutting.

[0048] like Figure 3 , 4As shown, the protective cover 5 is fixedly connected with third springs 28 which are relatively distributed and symmetrical to each other, one end of the third spring 28 is fixedly connected with a connecting rod 29, and the connecting rod 29 is slidably connected to the protective cover 5, and the upper surface of the protective cover 5 is provided with a Z-shaped groove 31, and a Z-shaped block 30 is slidably connected inside the Z-shaped groove 31, and one end of the Z-shaped block 30 is fixedly connected to the upper end of the connecting rod 29;

[0049] When in use, the protective cover 5 and the box body 1 are set to be detachable. When installing, the Z-shaped block 30 is pushed inward, and the Z-shaped block 30 drives the connecting rod 29 to compress the third spring 28, so that the protective cover 5 and the box body 1 are rotatably installed, which is convenient for subsequent maintenance of the device.

[0050] like Figure 4 As shown, an L-shaped plate 25 is fixedly provided on the lower surface of the cutting motor 3, and a limiting groove 24 for sliding connection with the L-shaped plate 25 is opened inside the box body 1. The outer side of the L-shaped plate 25 is fixedly connected to the inner wall of the box body 1 through a second spring 26. An electric telescopic rod 27 is fixedly provided inside the box body 1 and located in the middle of the L-shaped plate 25, and the output end of the electric telescopic rod 27 is fixedly connected to the outer side of the L-shaped plate 25. The electric telescopic rod 27 drives the L-shaped plate 25 to slide on the limiting groove 24 through the extension and contraction of the output end, thereby realizing the movement of the cutting motor 3 and the cutting blade 4. Due to the design of the second spring 26 and the limiting groove 24, the stable operation of the cutting motor 3 is guaranteed.

[0051] like Figure 1 As shown, a control terminal 17 is fixedly provided on one side of the upper surface of the box body 1 close to the protective cover 5, and the control terminal 17 is electrically connected to the cutting motor 3 and the electric telescopic rod 27 respectively. A charging interface 12 is provided on one end of the box body 1 close to the control terminal 17, and the charging interface 12 is electrically connected to the control terminal 17; a one-button start design is adopted, and the operator only needs to press a button to start the cutting process without complicated settings.

[0052] like Figure 2 As shown, a battery compartment 18 is provided on the outside of the box body 1, and a removable lithium battery 19 is slidably connected to the inner cavity of the battery compartment 18, and a plurality of first springs 21 are fixedly connected to the inner top wall and the inner bottom wall of the battery compartment 18, and one end of the first spring 21 is fixedly connected to a limit plate 20, and a T-shaped block 22 is fixedly connected to the upper part of the limit plate 20, and a linear groove 23 is symmetrically provided on the outer wall of the box body 1 and at both ends of the battery compartment 18, and the T-shaped block 22 is slidably connected to the linear groove 23;

[0053] When the device is out of power, you only need to replace the removable lithium battery 19. When replacing, push the T-block 22 upward to move in the linear groove 23, and simultaneously drive the limit plate 20 to move and compress the first spring 21, and then take out the removable lithium battery 19. Repeat the operation to install the removable lithium battery 19, which is convenient to carry and more convenient to use.

[0054] like Figure 3 As shown, a magnetic block 13 is fixedly provided at the lower part of the protective cover 5, and a magnetic groove 14 assembled with the magnetic block 13 is opened at the upper part of the box body 1. The protective cover 5 is fixed by magnetic attraction, which is more convenient to use.

[0055] The present invention provides a method for using a portable building metal material cutting machine, comprising the following steps:

[0056] Step 1: First, turn the protective cover 5 90 degrees to separate the magnetic block 13 from the magnetic groove 14;

[0057] Step 2: After placing the steel bars, flip the protective cover 5 and reset it for protection;

[0058] Step 3: The limit rod constrains and fixes the steel bar;

[0059] Step 4: The cutting motor 3 drives the cutting blade 4 to rotate at high speed for cutting;

[0060] Step 5: The L-shaped plate 25 drives the cutting motor 3 and the cutting blade 4 to move and cut.

[0061] Working principle: When in use, first flip the protective cover 5 90 degrees to disengage the magnetic block 13 from the magnetic groove 14, place the steel bar at the top opening of the box body 1, and make the steel bar located on the upper surface of the pad 15, flip the protective cover 5 to reset and cooperate with the fireproof cover 9 to protect the processing process, lift the limit rod 36 upward, the limit rod 36 drives the connecting block 35 and the slider 38 to slide along the limit rod 33 and compress the fourth spring 34, then screw the screw 8, screw 8, screw 8 drives the movable clamp 7 to move along the movable groove 16 to one side of the fixed clamp 6, and the movable clamp 7 drives the slider 38 along the slide groove 37 to the fixed clamp 6 moves to one side, the fourth spring 34 drives the limit rod 36 to move down through the connecting block 35 and the slider 38 to constrain and fix the steel bar, which is convenient for subsequent cutting to fix steel bars of different diameters, and then presses the control end 17, which supplies power to the cutting motor 3 and the electric telescopic rod 27 through wires, and the cutting motor 3 drives the cutting blade 4 to rotate at high speed, and the control end 17 extends forward and drags the L-shaped plate 25, and the L-shaped plate 25 slides in the limit groove 24 and drives the cutting motor 3 and the cutting blade 4 to move to one side of the steel bar, thereby completing the cutting. During the cutting process, the protective cover 5, the fireproof cover 9, and the transparent high-temperature resistant glass 10 The transparent soft door curtain narrow piece 11 can effectively protect the safety of the operator. At the same time, the removable lithium battery 19 is changed to a detachable design, and a charging interface 12 is added. When the device is out of power, it only needs to conveniently replace the removable lithium battery 19 or charge it through the charging interface 12 to continue using it. The portable construction metal material cutting device provided by the present invention has a simple structure, easy operation, safety and reliability, is suitable for various construction sites, can effectively improve work efficiency, reduce labor intensity, and ensure the safety of operators.

[0062] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A portable construction metal material cutting machine, comprising a housing (1), wherein one side of the upper surface of the housing (1) is provided with an opening, wherein: It also includes a protective mechanism located on the upper surface of the box body (1) near the opening; A cutting mechanism is arranged inside the box (1), the cutting mechanism comprising a cutting motor (3), and the output end of the cutting motor (3) is drivingly connected to a cutting blade (4); Clamping mechanisms are provided on both sides of the opening, and the clamping mechanisms include cushion blocks (15) that are symmetrically and fixedly arranged at the opening, one side of the upper surface of the cushion block (15) being fixedly connected to a fixed clamp block (6), and the other side of the upper surface of the cushion block (15) being movably connected to a movable clamp block (7).

2. A portable construction metal material cutting machine according to claim 1, characterized in that: The protective mechanism comprises a protective cover (5), a fireproof cover (9) is fixedly arranged on the lower surface of the protective cover (5), transparent soft door curtain narrow pieces (11) are symmetrically arranged at both ends of the lower surface of the protective cover (5), a transparent high-temperature resistant glass (10) is arranged at the center of the surface of the protective cover (5), a magnetic attraction block (13) is fixedly arranged at the lower part of the protective cover (5), and a magnetic attraction groove (14) assembled with the magnetic attraction block (13) is opened on the upper part of the box body (1).

3. A portable construction metal material cutting machine according to claim 1, characterized in that: A movable groove (16) is provided on the upper portion of the cushion block (15), and a screw rod (8) is rotatably connected to the inner cavity of the movable groove (16). The screw rod (8) is threadably connected to the movable clamp block (7), and one end of the screw rod (8) extends through and extends to the outside of the box body (1).

4. A portable construction metal material cutting machine according to claim 1, characterized in that: The box body (1) is fixedly connected to a handle (2) on the outside, the outer side walls of the fixed clamp block (6) and the movable clamp block (7) are provided with a groove (32), the inner cavity of the groove (32) is fixedly provided with a guide rod (33), and a connecting block (35) is slidably provided on the surface of the guide rod (33) inside the fixed clamp block (6).

5. A portable construction metal material cutting machine according to claim 4, characterized in that: A limiting rod (36) is fixedly connected to the connection block (35), a slide groove (37) is provided at the other end of the limiting rod (36), and a slider (38) is slidably provided in the inner cavity of the slide groove (37), the slider (38) is slidably connected to a guide rod (33) provided in the inner cavity of the groove (32), and the connection block (35) and the slider (38) are both fixedly connected to the inner top wall of the groove (32) via a fourth spring (34).

6. The portable construction metal material cutting machine according to claim 1, characterized in that: The protective cover (5) is fixedly connected to a third spring (28) which is relatively distributed and symmetrical to each other. One end of the third spring (28) is fixedly connected to a connecting rod (29), and the connecting rod (29) is slidably connected to the protective cover (5). The upper surface of the protective cover (5) is provided with a Z-shaped groove (31), and a Z-shaped block (30) is slidably connected to the inside of the Z-shaped groove (31), and one end of the Z-shaped block (30) is fixedly connected to the upper end of the connecting rod (29).

7. The portable construction metal material cutting machine according to claim 1, characterized in that: An L-shaped plate (25) is fixedly provided on the lower surface of the cutting motor (3); a limiting groove (24) for sliding connection with the L-shaped plate (25) is provided inside the box (1); the outer side of the L-shaped plate (25) is fixedly connected to the inner side wall of the box (1) via a second spring (26); an electric telescopic rod (27) is fixedly provided inside the box (1) and located in the middle of the L-shaped plate (25); and the output end of the electric telescopic rod (27) is fixedly connected to the outer side of the L-shaped plate (25).

8. The portable construction metal material cutting machine according to claim 1, characterized in that: A control terminal (17) is fixedly provided on one side of the upper surface of the box body (1) close to the protective cover (5), and the control terminal (17) is electrically connected to the cutting motor (3) and the electric telescopic rod (27), respectively. A charging interface (12) is provided on one end of the box body (1) close to the control terminal (17), and the charging interface 12 is electrically connected to the control terminal 17.

9. The portable construction metal material cutting machine according to claim 1, characterized in that: A battery compartment (18) is provided on the outside of the box body (1), a removable lithium battery (19) is slidably connected to the inner cavity of the battery compartment (18), a plurality of first springs (21) are fixedly connected to the inner top wall and the inner bottom wall of the battery compartment (18), one end of the first spring (21) is fixedly connected to a limit plate (20), a T-shaped block (22) is fixedly connected to the limit plate (20), and a linear groove (23) is symmetrically provided on the outer wall of the box body (1) and at both ends of the battery compartment (18), and the T-shaped block (22) is slidably connected to the linear groove (23).

10. The method for using the portable construction metal material cutting machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: First, turn the protective cover (5) 90 degrees to separate the magnetic block (13) from the magnetic groove (14); Step 2: After placing the steel bars, the protective cover (5) is turned over and reset and cooperated with the fireproof cover (9) to provide protection during the processing; Step 3: The limiting rod (36) is moved downward to constrain and fix the steel bars, so as to fix steel bars of different diameters; Step 4: The cutting motor (3) drives the cutting blade (4) to rotate at high speed to perform cutting; Step 5: The L-shaped plate (25) slides in the limiting groove (24) and drives the cutting motor (3) and the cutting blade (4) to move to one side of the steel bar for cutting.

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