Cutting device for processing automobile steel pipe

Abstract

This invention discloses a cutting device for automotive steel pipe processing, relating to the field of steel pipe cutting technology. It includes a cutting section, on which a feeding and cleaning component is installed for wiping and cleaning the steel pipe; a shielding and protective component is installed on the cutting section to prevent damage to the cutting section; a protection control component is installed on the cutting section to drive the shielding and protective component to rotate; and a rotation protection component is installed on the cutting section. By using the protection control component in conjunction with the shielding and protective component, automatic control can be achieved. After the worker completes the cutting work, the rotating shield automatically closes and protects the saw blade of the cold-cutting machine body. During cutting, the protection of the saw blade can be automatically released in advance. This solves the problem of the safety hazard posed by the exposed saw blade in current automotive steel pipe processing cutting devices, which makes automatic saw blade protection difficult.

Description

Technical Field

[0001] This invention relates to the field of steel pipe cutting technology, specifically a cutting device for processing automotive steel pipes. Background Technology

[0002] Automotive steel tubing is widely used in the manufacture of automotive components such as shock absorbers. During processing, long automotive steel tubing typically undergoes heat treatment before being cut into sections using cutting equipment. Cutting is a core process in automotive steel tubing manufacturing, directly affecting the subsequent assembly accuracy and the quality of automotive parts. Cutting is often performed quickly using cold-cutting saws. However, current cutting devices for automotive steel tubing cannot automatically clean the outer wall of the tubing before clamping it. Impurities remaining on the tubing surface can easily affect clamping stability and even scratch the outer wall. Furthermore, traditional cold-cutting saws have poor safety features; after manual cutting, the cold-cutting saw... Although the machine stops operating, the saw blade will decelerate due to inertia until it stops completely. The exposed saw blade poses a safety hazard and is not easy to automatically protect. Traditional protective covers require frequent disassembly and assembly, which is inefficient. At the same time, because it is necessary to prevent damage to the automotive steel pipe during clamping, the clamping force on the automotive steel pipe should not be too large. If the saw blade has problems such as missing teeth or excessive wear, the cutting resistance will increase accordingly. When the saw blade approaches the automotive steel pipe, it is easy to rub against the automotive steel pipe, causing the automotive steel pipe to rotate in the opposite direction. While causing displacement, it is very easy to scratch the surface of the automotive steel pipe. It is difficult to detect manually in time, which directly affects the cutting quality and also increases the risk of saw blade breakage.

[0003] Therefore, the present invention proposes a cutting device for processing automotive steel pipes. Summary of the Invention

[0004] The purpose of this invention is to provide a cutting device for processing automotive steel pipes, in order to solve the problem mentioned in the background art that the exposed saw blades of current automotive steel pipe cutting devices pose safety hazards and are not convenient for automatic saw blade protection.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cutting device for processing automotive steel pipes, comprising a cutting section, wherein a feeding cleaning component is installed on the cutting section for wiping and cleaning the steel pipe; a shielding protective component is installed on the cutting section for preventing damage to the cutting section; a protective control component is installed on the cutting section for driving the shielding protective component to rotate; and a rotation protection component is installed on the cutting section for indicating loose clamping. The cutting section includes: a cold cutting machine base, a cold cutting machine body, a return torsion spring, and a saw blade protective cover. The cold cutting machine base is provided with a handle. The end of the cold cutting machine body is rotatably mounted on the cold cutting machine base via a rotating shaft. The cold cutting machine body is used for cutting automotive steel pipes. A return torsion spring is provided on the outer side of the rotating shaft at the end of the cold cutting machine body. One end of the return torsion spring is fixedly connected to the rotating shaft at the end of the cold cutting machine body, and the other end of the return torsion spring is fixedly connected to the cold cutting machine base. A saw blade protective cover is fixedly installed on the cold cutting machine body.

[0006] Preferably, the cutting section further includes a switch pressing plate, which is fixedly installed on the saw blade protective cover.

[0007] Preferably, the cutting section further includes: a fixed clamping block, a movable clamping block, and a push screw. Two fixed clamping blocks are fixedly installed on the cold cutting machine base by bolts, and the fixed clamping blocks have V-shaped grooves on their sides. Two movable clamping blocks are slidably attached to the cold cutting machine base, and the two movable clamping blocks have V-shaped grooves on their sides. Two push screws are threadedly connected to the cold cutting machine base, and the ends of the two push screws are respectively rotatably installed on the two movable clamping blocks. The movable clamping blocks are used to move and clamp the automotive steel pipe.

[0008] Preferably, the feed cleaning component includes a cleaning retaining ring and a sponge ring. The cleaning retaining ring is fixedly installed on the side of the cold cutting machine base; the sponge ring is fixedly installed on the cleaning retaining ring; the sponge ring is used to fit the automotive steel pipe.

[0009] Preferably, the protective shield includes: a mounting plate, a rotating cover, a rotating shaft, and a stop post; the mounting plate is fixedly mounted on the side of the saw blade protective cover; the rotating cover is located inside the saw blade protective cover; a rotating shaft is fixedly mounted on the rotating cover and rotatably mounted on the mounting plate; the rotating cover is used to protect the saw blade on the main body of the cold cutting machine; a stop post is fixedly mounted on the side of the rotating cover; the stop post is fitted against the bottom of the saw blade protective cover; the rotating cover is made of transparent material.

[0010] Preferably, the shielding and protective component further includes: a rotary gear and a protective torsion spring, wherein the rotary gear is fixedly sleeved on the rotary shaft; a protective torsion spring is provided on the outer side of the rotary shaft; one end of the protective torsion spring is fixedly connected to the rotary gear, and the other end of the protective torsion spring is fixedly connected to the mounting plate; the protective torsion spring is used to drive the rotating shield to rotate.

[0011] Preferably, the protective control component includes: a protective fixing rod, a meshing rack, and a protrusion. The protective fixing rod is fixedly installed on the cold cutting machine base by bolts. The meshing rack is fixedly installed on the protective fixing rod, and the meshing rack has an arc-shaped structure. The meshing rack can mesh with a rotary gear. The protrusion is fixedly installed on the meshing rack. The meshing rack is used to drive the rotary gear to rotate.

[0012] Preferably, the protection control component further includes: a control switch, wherein the control switch is fixedly installed at the bottom of the protection fixing rod; the control switch is capable of abutting against the switch pressing plate; the switch pressing plate is used to press the control switch.

[0013] Preferably, the rotation protection component includes: a mounting shell, an electromagnet, a lifting slider, a push spring, and a roller. The mounting shell is fixedly mounted on the base of the cold cutting machine. An electromagnet is fixedly mounted on the bottom of the mounting shell. A lifting slider is slidably sleeved on the mounting shell. A push spring is provided at the bottom of the lifting slider, and the push spring is connected between the electromagnet and the lifting slider. A roller is rotatably mounted on the lifting slider, and the roller is used to elastically fit the automotive steel pipe. The outer side of the roller is provided with a rubber coating.

[0014] Preferably, the rotation protection component further includes: a swing plate, a tension spring mounting bracket, a central tension spring, a contact spring, and an indicator light. The swing plate is fixedly mounted on the roller. A tension spring mounting bracket is fixedly mounted on the lifting slider, and the tension spring mounting bracket has a U-shaped structure. A central tension spring is fixedly mounted on the tension spring mounting bracket, and the top of the central tension spring is fixedly connected to the bottom of the swing plate. Two contact springs are fixedly mounted inside the mounting housing. An indicator light is fixedly mounted on the cold cutting machine base, and the indicator light and the two contact springs are connected in series with a battery power supply. The swing plate is located in the middle of the tension spring mounting bracket.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention employs a protective control component in conjunction with a shielding protective component. It can achieve automatic control so that after the worker completes the cutting work, the saw blade of the cold cutting machine body is automatically sealed and protected by a rotating shield. When cutting, the protective shield on the saw blade can be automatically released in advance to carry out the cutting work normally. This avoids the safety hazard caused by manual touch of the saw blade on the cold cutting machine body continuing to rotate under the action of inertia after the cold cutting machine body stops.

[0016] The use of a rotation protection component can automatically detect the stability of automotive steel pipes during cutting, preventing the steel pipes from rotating undetected by humans due to factors such as loose clamping or increased frictional resistance of the saw blade. This structure can automatically provide prompts, improving cutting safety, facilitating timely inspection or adjustment by staff, promptly detecting abnormalities, preventing the steel pipe from shifting position and causing surface scratches due to rotation, ensuring accurate cutting dimensions, no damage to pipe ends, and improving product qualification rate.

[0017] Using a feed cleaning component makes it easy to wipe and clean the outer wall of the automotive steel pipe, preventing impurities from remaining on the outer wall. However, when clamped by fixed and movable clamping blocks, the clamping stability is affected, and the fixed and movable clamping blocks can easily damage the outer wall of the automotive steel pipe when clamping impurities. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a cutting device for processing automotive steel pipes according to the present invention; Figure 2 This is a schematic diagram of the bottom structure of a cutting device for processing automotive steel pipes according to the present invention; Figure 3 This is a schematic diagram of the installation position of the drive screw of the present invention; Figure 4 For the present invention Figure 2 Enlarged view of the structure of region D in the middle; Figure 5 This is a schematic diagram of the shielding and protective component structure of the present invention; Figure 6 This is a schematic diagram of the rotating protective cover structure of the present invention; Figure 7 For the present invention Figure 2 Enlarged view of the structure of region B in the middle; Figure 8 For the present invention Figure 1 Enlarged view of the structure of region C in the middle; Figure 9 This is a cross-sectional view of the rotating protective component structure of the present invention; Figure 10 This is a cross-sectional view of the mounting position of the propulsion spring of the present invention.

[0019] In the diagram: 1. Cutting section; 101. Cold cutting machine base; 102. Cold cutting machine body; 1021. Return torsion spring; 1022. Saw blade protective cover; 103. Switch pressing plate; 104. Fixed clamping block; 105. Moving clamping block; 106. Push screw; 2. Feed cleaning component; 201. Cleaning fixing ring; 202. Sponge ring; 3. Shielding and protective component; 301. Mounting plate; 302. Rotating cover; 3021. Rotating shaft; 303. Stop post; 304. Rotary gear; 305. Protective torsion spring; 4. Protective control component; 401. Protective fixing rod; 402. Meshing rack; 4021. Protrusion; 403. Control switch; 5. Rotation protection component; 501. Mounting housing; 502. Electromagnet; 503. Lifting slider; 5031. Push spring; 504. Roller; 505. Swing plate; 506. Tension spring mounting bracket; 5061. Centering tension spring; 507. Electrical contact spring; 508. Indicator light. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 10 As shown: This invention provides a technical solution: a cutting device for processing automotive steel pipes, comprising a cutting section 1, a feeding cleaning component 2 installed on the cutting section 1 for wiping and cleaning the steel pipe; a shielding protection component 3 installed on the cutting section 1 for preventing damage to the cutting section 1; a protection control component 4 installed on the cutting section 1 for driving the shielding protection component 3 to rotate; and a rotation protection component 5 installed on the cutting section 1 for indicating clamping looseness; the cutting section 1 includes: a cold cutting machine base 101, a cold cutting machine body 102, and a composite... A torsion spring 1021 and a saw blade guard 1022 are provided. A handle is provided on the cold cutting machine base 101. The end of the cold cutting machine body 102 is rotatably mounted on the cold cutting machine base 101 via a rotating shaft. The cold cutting machine body 102 is used to cut automotive steel pipes. A return torsion spring 1021 is provided on the outer side of the rotating shaft at the end of the cold cutting machine body 102. One end of the return torsion spring 1021 is fixedly connected to the rotating shaft at the end of the cold cutting machine body 102, and the other end of the return torsion spring 1021 is fixedly connected to the cold cutting machine base 101. A saw blade guard 1022 is fixedly installed on the cold cutting machine body 102.

[0022] The cutting section 1 further includes: a switch pressing plate 103, which is fixedly installed on the saw blade protective cover 1022; the cutting section 1 also includes: a fixed clamping block 104, a movable clamping block 105, and a push screw 106; two fixed clamping blocks 104 are fixedly installed on the cold cutting machine base 101 by bolts, and the fixed clamping blocks 104 have V-shaped grooves on their sides; two movable clamping blocks 105 are slidably attached to the cold cutting machine base 101, and the two movable clamping blocks 105 have V-shaped grooves on their sides; two push screws 106 are threadedly connected to the cold cutting machine base 101, and the ends of the two push screws 106 are respectively rotatably installed on the two movable clamping blocks 105; the movable clamping blocks 105 are used for moving... The machine uses a moving clamp to hold automotive steel pipes. The feeding cleaning component 2 includes a cleaning fixing ring 201 and a sponge ring 202. The cleaning fixing ring 201 is fixedly installed on the side of the cold cutting machine base 101. The sponge ring 202 is fixedly installed on the cleaning fixing ring 201. The sponge ring 202 is used to fit the automotive steel pipe. The cutting part 1 can easily and quickly clamp the automotive steel pipe for cutting, which is efficient. At the same time, the feeding cleaning component 2 can easily wipe and clean the outer wall of the automotive steel pipe, which can prevent impurities from being present on the outer wall of the automotive steel pipe. When clamped by the fixed clamping block 104 and the moving clamping block 105, the clamping stability is affected. When the fixed clamping block 104 and the moving clamping block 105 clamp impurities, they can also easily damage the outer wall of the automotive steel pipe.

[0023] The protective element 3 includes: a mounting plate 301, a rotating guard 302, a rotating shaft 3021, and a stop post 303. The mounting plate 301 is fixedly installed on the side of the saw blade protective cover 1022; the rotating guard 302 is located inside the saw blade protective cover 1022; the rotating shaft 3021 is fixedly installed on the rotating guard 302, and the rotating shaft 3021 is rotatably installed on the mounting plate 301; the rotating guard 302 is used to protect the saw blade on the cold cutting machine body 102; the stop post 303 is fixedly installed on the side of the rotating guard 302; the stop post 303 stops and fits against the bottom of the saw blade protective cover 1022; the rotating guard 302 is made of transparent material; the protective element 3 also includes: a return... A rotating gear 304 and a protective torsion spring 305 are provided. The rotating gear 304 is fixedly sleeved on the rotating shaft 3021. A protective torsion spring 305 is provided on the outer side of the rotating shaft 3021. One end of the protective torsion spring 305 is fixedly connected to the rotating gear 304, and the other end of the protective torsion spring 305 is fixedly connected to the mounting plate 301. The protective torsion spring 305 is used to drive the rotating guard 302 to rotate. The protective control component 4 includes: a protective fixing rod 401, a meshing rack 402, and a protrusion 4021. The protective fixing rod 401 is fixedly installed on the cold cutting machine base 101 by bolts. The meshing rack 402 is fixedly installed on the protective fixing rod 401, and the meshing rack 402 has an arc-shaped structure. The rack 402 can mesh with the rotary gear 304; a protrusion 4021 is fixedly installed on the meshing rack 402; the meshing rack 402 is used to drive the rotary gear 304 to rotate; by using the protective control component 4 in conjunction with the shielding protection component 3, automatic control can be achieved. After the worker completes the cutting work, the rotating shield 302 automatically closes and protects the saw blade on the main body 102 of the cold cutting machine. During cutting, the protective shield on the saw blade can be automatically released in advance to carry out the cutting work normally. The structure is simple and reasonable, which can effectively avoid the saw blade on the main body 102 of the cold cutting machine being exposed when manually clamping and adjusting automobile steel pipes, causing scratches and other safety hazards. It can also prevent the saw blade from being covered by dust and debris. This design prevents the saw blade from being contaminated or damaged by external impacts, extending its service life. It also prevents the saw blade from continuing to rotate on the main body 102 of the cold cutting machine after it stops due to inertia, thus avoiding safety hazards caused by manual touch. The structure is simple to control. After cutting, the main body 102 of the cold cutting machine can be manually lifted. With the help of the elastic torque of the reset torsion spring 1021, the main body 102 of the cold cutting machine can rotate upwards to reset, driving the rotary gear 304 to move together. When the rotary gear 304 approaches the meshing rack 402, it can be meshed and driven to rotate by the meshing rack 402, driving the rotating guard 302 to rotate together, shielding and protecting the saw blade of the main body 102 of the cold cutting machine.

[0024] In Example 2, based on Example 1, the protective control component 4 further includes: a control switch 403, with the control switch 403 fixedly installed at the bottom of the protective fixing rod 401; the control switch 403 can abut against the switch pressing plate 103; the switch pressing plate 103 is used to press the control switch 403; the rotation protection component 5 includes: a mounting shell 501, an electromagnet 502, a lifting slider 503, a push spring 5031, and a roller 504; the mounting shell 501 is fixedly installed on the cold cutting machine base 101; the electromagnet 502 is fixedly installed at the bottom of the mounting shell 501; the lifting slider is slidably sleeved on the mounting shell 501. 503; The bottom of the lifting slider 503 is provided with a push spring 5031, and the push spring 5031 is connected between the electromagnet 502 and the lifting slider 503; A roller 504 is rotatably mounted on the lifting slider 503, and the roller 504 is used to elastically fit the automotive steel tube; The outer side of the roller 504 is provided with a rubber coating; The rotation protection component 5 also includes: a swing plate 505, a tension spring mounting bracket 506, a centering tension spring 5061, a contact spring 507, and an indicator light 508. The swing plate 505 is fixedly mounted on the roller 504; The lifting slider 503 is fixedly mounted with a tension spring mounting bracket 506, and the tension spring mounting bracket 5061 is also fixedly mounted on the roller 504. 6 is a U-shaped structure; a central tension spring 5061 is fixedly installed on the tension spring mounting bracket 506, and the top of the central tension spring 5061 is fixedly connected to the bottom of the swing plate 505; two electrical contact springs 507 are fixedly installed inside the mounting shell 501; an indicator light 508 is fixedly installed on the cold cutting machine base 101, and the indicator light 508 and the two electrical contact springs 507 are connected in series with a battery power supply; the swing plate 505 is located in the middle of the tension spring mounting bracket 506; the rotation protection component 5 can automatically detect the stability of the automotive steel pipe during cutting, and avoid the automotive steel pipe from rotating due to factors such as loose clamping or increased frictional resistance of the saw blade. Since manual inspection may not be possible in time, this structure can automatically provide prompts, improving cutting safety and facilitating timely maintenance or adjustments by staff. It also helps detect abnormalities promptly, preventing positional shifts and surface scratches caused by pipe rotation, ensuring accurate cutting dimensions and undamaged pipe ends, and improving product qualification rates. Furthermore, it prevents uneven force on the saw blade due to pipe rotation, reducing the risk of saw blade breakage. Combined with protective control component 4, it automatically controls the detection to occur only during cutting, preventing accidental activation during operations such as clamping automotive steel pipes. The simple and reasonable structure is more suitable for processing needs requiring high cutting quality and precision.

[0025] The working principle of this embodiment is as follows: Place the cold-cutting machine base 101 on the ground or a steel pipe conveyor line, insert the automotive steel pipe into the sponge ring 202, and clean the automotive steel pipe using the sponge ring 202. Then, place the automotive steel pipe between the fixed clamping block 104 and the movable clamping block 105. The cutting position of the automotive steel pipe can be pre-measured. Rotate the two push screws 106 respectively to drive the two movable clamping blocks 105 to move, thereby clamping the automotive steel pipe. Manually pressing down on the cold-cutting machine body 102 will perform the cutting work, as shown in the attached figure. Figure 1 The state shown is that when cutting automotive steel pipes, the rotating guard 302 is kept inside the saw blade guard 1022 by the elastic action of the protective torsion spring 305, which does not affect the normal cutting process. However, after the cutting is completed, the main body 102 of the cold cutting machine is manually lifted. With the assistance of the elastic torque of the reset torsion spring 1021, the main body 102 of the cold cutting machine can rotate upwards to reset, driving the rotary gear 304 to move together. When the rotary gear 304 approaches the meshing rack 402, it can be meshed and driven to rotate by the meshing rack 402, thus driving the machine to rotate. The rotating guard 302 rotates together, shielding and protecting the saw blade of the cold cutting machine body 102 until the rotary gear 304 is stopped and limited by the protrusion 4021. The switch pressing plate 103 will also press and adhere to the control switch 403. When it is necessary to cut automotive steel pipes, the cold cutting machine body 102 can be manually pressed down again to carry out the cutting work. When the cold cutting machine body 102 moves down, the rotary gear 304 will be driven to rotate by the meshing rack 402, controlling the rotating guard 302 to retract and no longer shield the saw blade of the cold cutting machine body 102, so that the cutting work can be carried out normally. When the control switch 403 is pressed, the electromagnet 502 is energized and generates a magnetic force to attract the lifting slider 503, compressing the push spring 5031 and keeping the roller 504 in an inward-retracted state. This serves to avoid obstruction when installing automotive steel pipes. However, when the cold cutting machine body 102 is pressed down, the switch pressing plate 103 no longer presses against the control switch 403. At this time, the control switch 403 can de-energize the electromagnet 502 and stop magnetically attracting the lifting slider 503. Under the elastic push of the push spring 5031, the slider 503 is no longer in motion. The lifting slider 503 can move upward, causing the roller 504 to extend out of the mounting shell 501 and fit tightly and elastically against the outside of the clamped car steel pipe. Once the car steel pipe rotates due to friction from the saw blade, it will rub against the roller 504, causing the swing plate 505 to rotate and stretch the central tension spring 5061. After the swing plate 505 rotates, it will abut against the electrical contact spring 507 on the rotating side. At this time, the two electrical contact springs 507 are connected, and the indicator light 508 will be powered on and illuminated to indicate that manual inspection is required in a timely manner.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for processing automotive steel pipes, comprising a cutting section (1), wherein a feeding cleaning component (2) is installed on the cutting section (1), characterized in that: A shielding and protective component (3) is installed on the cutting part (1); A protective control component (4) is installed on the cutting section (1); the protective control component (4) is used to drive the shielding protective component (3) to rotate; A rotation protection component (5) is installed on the cutting part (1); The cutting part (1) includes: a cold cutting machine base (101), a cold cutting machine body (102), a reset torsion spring (1021), and a saw blade protective cover (1022). The end of the cold cutting machine body (102) is rotatably mounted on the cold cutting machine base (101) via a rotating shaft. A reset torsion spring (1021) is provided on the outer side of the rotating shaft at the end of the cold cutting machine body (102). A saw blade protective cover (1022) is fixedly installed on the cold cutting machine body (102).

2. The cutting device for processing automotive steel pipes according to claim 1, characterized in that: The cutting section (1) further includes a switch pressing plate (103), and the switch pressing plate (103) is fixedly installed on the saw blade protective cover (1022).

3. The cutting device for processing automotive steel pipes according to claim 2, characterized in that: The cutting section (1) further includes: a fixed clamping block (104), a movable clamping block (105), and a push screw (106). Two fixed clamping blocks (104) are fixedly installed on the cold cutting machine base (101); two movable clamping blocks (105) are slidably attached to the cold cutting machine base (101); two push screws (106) are threadedly connected to the cold cutting machine base (101), and the ends of the two push screws (106) are respectively rotatably installed on the two movable clamping blocks (105).

4. The cutting device for processing automotive steel pipes according to claim 1, characterized in that: The feed cleaning component (2) includes a cleaning fixing ring (201) and a sponge ring (202). The cleaning fixing ring (201) is fixedly installed on the side of the cold cutting machine base (101); the sponge ring (202) is fixedly installed on the cleaning fixing ring (201).

5. The cutting device for processing automotive steel pipes according to claim 3, characterized in that: The shielding and protective component (3) includes: a mounting plate (301), a rotating guard (302), a rotating shaft (3021), and a stop post (303). The mounting plate (301) is fixedly installed on the side of the saw blade protective cover (1022). The rotating guard (302) is located inside the saw blade protective cover (1022). The rotating shaft (3021) is fixedly installed on the rotating guard (302), and the rotating shaft (3021) is rotatably installed on the mounting plate (301). The stop post (303) is fixedly installed on the side of the rotating guard (302).

6. The cutting device for processing automotive steel pipes according to claim 5, characterized in that: The shielding and protective component (3) further includes: a rotary gear (304) and a protective torsion spring (305). The rotary gear (304) is fixedly sleeved on the rotary shaft (3021). The protective torsion spring (305) is provided on the outside of the rotary shaft (3021). The protective torsion spring (305) drives the rotating cover (302) to rotate, so that the stop post (303) stops and fits against the bottom of the saw blade protective cover (1022).

7. The cutting device for processing automotive steel pipes according to claim 6, characterized in that: The protective control component (4) includes: a protective fixing rod (401), a meshing rack (402), and a protrusion (4021). The protective fixing rod (401) is fixedly installed on the cold cutting machine base (101). The meshing rack (402) is fixedly installed on the protective fixing rod (401), and the meshing rack (402) has an arc-shaped structure. The meshing rack (402) can mesh with the rotary gear (304). The protrusion (4021) is fixedly installed on the meshing rack (402).

8. The cutting device for processing automotive steel pipes according to claim 7, characterized in that: The protection control component (4) further includes a control switch (403), and the control switch (403) is fixedly installed at the bottom of the protection fixing rod (401); the control switch (403) can abut against the switch pressing plate (103).

9. A cutting device for processing automotive steel pipes according to claim 8, characterized in that: The rotation protection component (5) includes: a mounting shell (501), an electromagnet (502), a lifting slider (503), a push spring (5031), and a roller (504). The mounting shell (501) is fixedly mounted on the cold cutting machine base (101). An electromagnet (502) is fixedly mounted on the bottom of the mounting shell (501). A lifting slider (503) is slidably sleeved on the mounting shell (501). A push spring (5031) is provided at the bottom of the lifting slider (503), and the push spring (5031) is connected between the electromagnet (502) and the lifting slider (503). A roller (504) is rotatably mounted on the lifting slider (503).

10. A cutting device for processing automotive steel pipes according to claim 9, characterized in that: The rotation protection component (5) further includes: a swing plate (505), a tension spring mounting bracket (506), a centering tension spring (5061), a power contact spring (507), and an indicator light (508). The swing plate (505) is fixedly mounted on the roller (504). The lifting slider (503) is fixedly mounted with the tension spring mounting bracket (506). The tension spring (5061) is fixedly mounted on the tension spring mounting bracket (506), and the top of the centering tension spring (5061) is fixedly connected to the bottom of the swing plate (505). Two power contact springs (507) are fixedly mounted inside the mounting shell (501). An indicator light (508) is fixedly mounted on the cold cutting machine base (101), and the indicator light (508) and the two power contact springs (507) are connected in series with a battery power supply.

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