A laser safety protection device for a numerical control machine tool

Abstract

The application discloses a kind of numerical control machine tool laser safety protection device, it is related to numerical control machine tool technical field.The present application includes: device main body, two electric sliding rails are symmetrically arranged in device main body inner side wall, bearing plate is slidably installed between the end of two electric sliding rails, observation mechanism top end is internally provided with electric push rod, cutting mechanism is fixedly installed at the bottom of electric push rod telescopic end, protective shell is fixedly installed and penetrates the circumferential outer wall of electric push rod, two L-shaped plates are symmetrically and fixedly installed on the outer side wall of protective shell.The present application is dynamically attached by detection roller, so that cutting mechanism can be adjusted in real time according to the sensing data conducted by inductor, avoid because laser beam intensity is always constant, after cutting material thin place, laser beam is burned on bearing plate or other mechanism, so that safety accident occurs in device main body inner.

Description

Technical Field

[0001] This invention belongs to the field of CNC machine tool technology, specifically relating to a laser safety protection device for CNC machine tools. Background Technology

[0002] CNC machine tools are equipment that automatically control the machining motion and process of the machine tool through digital program instructions. Its core is the computer numerical control system, which, together with servo drives, detection feedback and other components, can complete the machining of complex parts efficiently and with high precision. However, when CNC machine tools use lasers for machining, it is easy to bring certain safety hazards.

[0003] Patent publication number CN223198315U discloses a laser safety protection device for CNC machine tools, including a machine tool body, a support frame installed at the rear end of the machine tool body, a laser instrument body installed at the top of the support frame, a protective mechanism installed at the center of the support frame, the protective mechanism including a protective cover, a dust collection device installed on the right side of the protective cover, and a lifting mechanism on the right side of the protective mechanism. A right trapezoidal slider and a left trapezoidal slider are fitted into trapezoidal slide rails installed on the inner wall of the support frame for easy adjustment and protection. A mounting block installed on the right trapezoidal slider can fix the dust collection device for convenient and quick dust removal. An L-shaped pipe installed at the bottom of the dust collector can be installed in the air extraction port for synchronous lifting and lowering with the laser instrument body. The lifting mechanism, driven by a servo motor, can adjust the height of the protective mechanism to protect objects of different thicknesses, improving the applicability of the device.

[0004] The aforementioned device also has the following problems: While the device uses a protective mechanism to protect the laser instrument, when laser cutting materials with varying heights on the left and right sides, the material thickness changes. If the laser beam intensity remains constant, the laser beam can easily burn the support plate after cutting the thinner part of the material, thus increasing the possibility of safety accidents inside the device. Furthermore, it is difficult to ensure that materials with varying heights on the left and right sides maintain a flat posture during laser cutting. Additionally, it is difficult to continuously control and detect the material's posture before processing, and to adjust the equipment operation accordingly in a timely manner. Summary of the Invention

[0005] The purpose of this invention is to provide a laser safety protection device for CNC machine tools, in order to solve the problem mentioned in the background art that when laser cutting materials with different heights on the left and right sides, the material thickness changes, and if the laser beam intensity remains constant, the laser beam can easily burn the support plate after cutting the thinner part of the material, thereby increasing the possibility of safety accidents inside the device.

[0006] To achieve the above objectives, the present invention provides a laser safety protection device for CNC machine tools, comprising: a main body, wherein two electric slide rails are symmetrically arranged on the inner sidewall of the main body, and a bearing plate is slidably installed between the two electric slide rails at one end close to each other; an electric push rod is arranged inside the top of the observation mechanism, and a cutting mechanism is fixedly installed at the bottom of the telescopic end of the electric push rod; a protective shell is fixedly installed through the outer circumference of the electric push rod; two L-shaped plates are symmetrically and fixedly installed on the outer sidewall of the protective shell; an anti-side-lifting device is arranged below the L-shaped plates to ensure that the material to be cut, which has a height difference between the left and right sides, remains parallel; an anti-interference device is arranged around the anti-side-lifting device to prevent external light sources from affecting the cutting mechanism during cutting; a T-shaped plate is slidably installed on the sidewall of the L-shaped plate by a spring; a detection roller is rotatably installed inside the bottom end of the T-plate; simultaneously, the protective shell drives the L-shaped plate to move downward, and the L-shaped plate drives the T-shaped plate to move synchronously; the T-shaped plate drives the detection roller to move closer to the top of the bearing plate. When the movable detection roller comes into contact with the material, it generates a resistance force. At this time, the detection roller is under force and causes the T-shaped plate to slide vertically along the side wall of the L-shaped plate. The T-shaped plate, through the spring force, keeps the detection roller in close contact with the top surface of the material. Thus, the detection roller continuously changes the deformation stroke of the spring according to the change in material thickness. That is, the detection roller transmits the data change to the cutting mechanism by means of the built-in sensor. An electric rotating rod is rotatably installed between the two L-shaped plates on their side. After the material to be cut is placed on the top of the support plate, the electric slide rail, electric push rod and electric rotating rod start synchronously. The output end of the electric slide rail moves slower than the electric push rod, and the electric push rod moves slower than the electric rotating rod. At this time, the extension end of the electric push rod drives the cutting mechanism and the protective shell to move down. The protective shell protects the cutting mechanism and prevents external objects from hitting the cutting mechanism and causing damage. A gear is fixedly installed through the outer wall of the electric rotating rod. A toothed plate is slidably installed at the bottom end of the protective shell. A cleaning roller is rotatably installed inside the toothed plate at the end away from the gear.

[0007] According to another advantageous design of the present invention, an observation mechanism is provided on the front of the main body of the device, the electric push rod is telescopic, the cutting mechanism is laser-based, and the bottom plane of the cutting mechanism is a focusing lens. The protective shell prevents the cutting mechanism from being bumped by external objects. Two square grooves are symmetrically opened on the top of the protective shell, and the T-shaped plate is slidably installed inside the main body of the device on the side away from the L-shaped plate.

[0008] According to another advantageous design of the invention, the detection roller has a built-in sensor. During the cutting process, the detection roller transmits the thickness changes at both ends of the material to the cutting mechanism in real time through the sensor. The toothed plate meshes with the gear. The circumferential surface of the clean roller contacts the focusing lens at the bottom of the cutting mechanism. The L-shaped plate drives the electric rotating rod to move downward. When the electric rotating rod rotates, it drives the gear to revolve. When the gear rotates, it causes the meshing toothed plate to slide horizontally along the bottom of the protective shell. The toothed plate drives the clean roller to move synchronously. The rotating clean roller contacts the focusing lens at the bottom of the cutting mechanism. The horizontal movement of the clean roller wipes the focusing lens.

[0009] According to another advantageous design of the present invention, the anti-side-lift device includes an elastic telescopic column, which is fixedly installed on the inner side wall of the device body. A centering plate is fixedly installed on the telescopic end side wall of the elastic telescopic column, and a plurality of limiting rollers are equidistantly and rotatably installed inside the right end of the centering plate.

[0010] According to another advantageous design of the present invention, the right end of the centering plate is hollow, and the surface friction of the plurality of limiting rollers increases from bottom to top. When the detection roller presses down, if the material is placed at a low position on the top of the support plate, under the contact of the detection roller, the material will be subjected to force at one end, causing the other end to tilt and flip upward. At this time, the side wall of the other end of the material contacts the outer wall of the equidistant and rotatably arranged limiting rollers. That is, the greater the material thickness and the difference between the left and right heights, the greater the tilting and flipping amplitude. Therefore, the limiting rollers with gradually increasing friction gradually increase the limiting strength of the material.

[0011] According to another advantageous design of the present invention, the anti-side-lift device further includes a fixed frame, which is fixedly installed on the side wall of the L-shaped plate near the protective shell. A trapezoidal frame is slidably installed inside the fixed frame by a spring. The top arc surface of the centering plate is located on the movement trajectory of the inclined surface of the trapezoidal frame. When the L-shaped plate moves vertically, it drives the fixed frame to move synchronously. The fixed frame drives the trapezoidal frame to move synchronously. When the trapezoidal frame descends, its inclined surface contacts and abuts the top arc surface of the centering plate. At this time, the centering plate generates a horizontal movement force. The centering plate pulls the telescopic end of the elastic telescopic column to extend synchronously. The centering plates at both ends move closer to each other to contact and push the side wall of the material, thereby ensuring that the material is always in a horizontal and centered position on the top of the bearing plate.

[0012] According to another advantageous design of the present invention, the anti-interference device includes a crossbar, the left end of which is fixedly installed on the right side wall of the fixed frame. A U-shaped frame is slidably installed through the outer wall of the crossbar. A level is installed inside the U-shaped frame and is connected to the cutting mechanism. An L-shaped block is fixedly installed between the side wall of the U-shaped frame and the left side of the T-shaped plate. The fixed frame drives the crossbar to move synchronously, the crossbar drives the U-shaped frame to move synchronously, and the U-shaped frame drives the level to move synchronously. At the same time, the L-shaped block ensures that when the T-shaped plate rises, it can pull the U-shaped frame and the level upward along the crossbar. That is, the bottom of the U-shaped frame is always flush with the bottom of the circumferential surface of the detection roller. At this time, the bottom of the U-shaped frame detects the top of the material on the top of the support plate.

[0013] According to another advantageous design of the present invention, a U-shaped frame is fixedly installed on the top of the U-shaped frame, a round rod is fixedly installed inside the square groove of the protective shell, and a mirror panel is rotatably installed on the outer wall of the round rod. When the U-shaped frame rises, it drives the U-shaped frame to move synchronously. When the U-shaped frame rises, it disengages from the contact with the mirror panel, and the mirror panel is limited by the round rod at this time.

[0014] According to another advantageous design of the present invention, a torsion spring is provided between the round rod and the mirror panel, the side wall of the mirror panel contacts the side wall of the U-shaped frame near the center of the protective shell, and the mirror panel shields the external light source when the cutting mechanism is working. The rotational force is generated by the elastic force of the torsion spring, that is, the mirror panel flips along the outer wall of the round rod towards the center of the protective shell, and then the mirror panel is tilted to block the square groove of the protective shell.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by cooperating with the electric push rod, cutting mechanism, protective shell, L-shaped plate, T-shaped plate, detection roller, electric rotating rod, gear, toothed plate and clean roller, the dynamic contact of the detection roller enables the cutting mechanism to adjust the cutting laser intensity in real time according to the sensing data transmitted by the sensor. This avoids the laser beam burning the support plate or other mechanisms after cutting a thin part of the material due to the constant laser beam intensity, which could lead to a safety accident inside the main body of the device. By rotating the clean roller, the focusing lens of the cutting mechanism is kept clear and transparent without scratching it, preventing dirt from adhering and water vapor from condensing, and preventing the laser beam of the cutting mechanism from scattering or refracting, which could cause damage to the surrounding structure.

[0016] By using an anti-side-lift device, which consists of an L-shaped plate, an elastic telescopic column, a centering plate, a limiting roller, a fixed frame, and a trapezoidal frame, and with the limiting rollers and the horizontally moving centering plate configured with different friction forces, the device ensures that the flipped material is quickly and horizontally centered before being reattached to the top of the support plate. This prevents the material from being laser-cut due to an inclined posture, thus avoiding any difference between the material's thickness during laser cutting and the laser beam intensity adjusted by the cutting mechanism. This further prevents the laser beam from damaging the internal structure of the device or the material.

[0017] By incorporating an anti-interference device, a combination of a fixed frame, crossbar, U-shaped frame, level, L-shaped block, round rod, and mirror panel, the level can detect whether the material is horizontal or within acceptable limits before laser cutting. If the material's posture is unsatisfactory, the support plate slows down to allow the limiting rollers to adjust the material, thus ensuring the laser beam intensity remains within safe processing standards. The mirror panel's flip-out mechanism blocks the top of the protective shell during cutting, preventing interference from the top light source with the internal photosensitive elements and thus affecting the operation of the cutting mechanism. In non-working conditions, the square groove on the top of the protective shell ensures ventilation for the cutting mechanism. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the entire invention; Figure 2 This is a cross-sectional schematic diagram of the entire invention; Figure 3 This is a schematic diagram of the internal structure of the main body of the device of the present invention; Figure 4 This is a schematic diagram of the peripheral structure of the cutting mechanism of the present invention; Figure 5 This is a schematic diagram of the anti-side-lift device of the present invention; Figure 6 This is a schematic diagram from the right side view of the anti-side-lift device of the present invention; Figure 7 This is a schematic diagram of the anti-interference device of the present invention; Figure 8 This is a cross-sectional schematic diagram of the anti-interference device of the present invention.

[0019] Explanation of key figure labels: 1. Main body of the device; 2. Observation mechanism; 3. Electric slide rail; 4. Bearing plate; 5. Electric push rod; 6. Cutting mechanism; 7. Protective shell; 8. L-shaped plate; 9. T-shaped plate; 10. Detection roller; 11. Electric rotating rod; 12. Gear; 13. Toothed plate; 131. Cleaning roller; 14. Anti-side lifting device; 141. Elastic telescopic column; 142. Centering plate; 143. Limiting roller; 144. Fixing frame; 145. Trapezoidal frame; 15. Anti-interference device; 151. Crossbar; 152. U-shaped frame; 153. Level; 154. L-shaped block; 155. U-shaped frame; 156. Round rod; 157. Mirror panel. Detailed Implementation

[0020] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] like Figures 1-8 As shown, one embodiment of the present invention provides: a laser safety protection device for CNC machine tools, comprising: a device body 1, two electric slide rails 3 symmetrically arranged on the inner sidewall of the device body 1, a bearing plate 4 slidably installed between the two electric slide rails 3 at one end close to each other, an electric push rod 5 arranged inside the top of the observation mechanism 2, a cutting mechanism 6 fixedly installed at the bottom of the telescopic end of the electric push rod 5, a protective shell 7 fixedly installed through the outer circumference of the electric push rod 5, two L-shaped plates 8 symmetrically and fixedly installed on the outer sidewall of the protective shell 7, and a height guarantee mechanism 6 provided below the L-shaped plates 8 to ensure height difference between the left and right sides. A side-lifting device 14 is provided to ensure that the material to be cut remains parallel to the material with different dimensions. An anti-interference device 15 is provided around the side of the side-lifting device 14 to prevent external light sources from affecting the cutting mechanism 6 during cutting. A T-shaped plate 9 is slidably installed on the side wall of the L-shaped plate 8 via a spring. A detection roller 10 is rotatably installed inside the bottom end of the T-shaped plate 9. An electric rotating rod 11 is rotatably installed between the two L-shaped plates 8 on one side close to each other. A gear 12 is fixedly installed through the outer wall of the electric rotating rod 11. A toothed plate 13 is slidably installed on the bottom end of the protective shell 7. A clean roller 131 is rotatably installed inside the toothed plate 13 at the end away from the gear 12.

[0022] The main body 1 of the device has an observation mechanism 2 on the front, an electric push rod 5 with a telescopic design, a cutting mechanism 6 with a laser design, and a focusing lens on the bottom plane of the cutting mechanism 6. A protective shell 7 prevents the cutting mechanism 6 from being bumped by external objects. Two square slots are symmetrically opened on the top of the protective shell 7. The T-shaped plate 9 is slidably installed inside the main body 1 of the device on the side away from the L-shaped plate 8.

[0023] The detection roller 10 has a built-in sensor. During the cutting process, the detection roller 10 transmits the thickness changes at both ends of the material to the cutting mechanism 6 in real time through the sensor. The toothed plate 13 meshes with the gear 12, and the circumferential surface of the clean roller 131 contacts the focusing lens at the bottom of the cutting mechanism 6.

[0024] By dynamically fitting the detection roller 10, the cutting mechanism 6 can adjust the cutting laser intensity in real time based on the sensor data transmitted by the sensor. This avoids the laser beam burning the support plate 4 or other mechanisms after cutting a thin section of the material due to the constant laser beam intensity, which could lead to a safety accident inside the main body 1. By rotating the cleaning roller 131, the focusing lens of the cutting mechanism 6 is kept clear and transparent without scratching it. This prevents dirt from adhering and water vapor from condensing, and avoids the laser beam of the cutting mechanism 6 from scattering or refracting, which could damage the surrounding structure.

[0025] In use, after the material to be cut is placed on top of the support plate 4, the electric slide rail 3, electric push rod 5, and electric rotating rod 11 start synchronously. The output speed of the electric slide rail 3 is slower than that of the electric push rod 5, and the electric push rod 5 is slower than that of the electric rotating rod 11. At this time, the telescopic end of the electric push rod 5 drives the cutting mechanism 6 and the protective shell 7 to move downwards. The protective shell 7 protects the cutting mechanism 6 from external objects hitting it and causing damage. At the same time, the protective shell 7 drives the L-shaped plate 8 to move downwards, and the L-shaped plate 8 drives the T-shaped plate 9 to move synchronously. The T-shaped plate 9 drives the detection roller 10 to move closer to the top of the support plate 4. When the rotating detection roller 10 comes into contact with the material, it generates a resistance force. At this time, the detection roller 10 is subjected to force and causes the T-shaped plate to move. 9 slides vertically along the side wall of the L-shaped plate 8, and the T-shaped plate 9, through the spring force, keeps the detection roller 10 in close contact with the top surface of the material. Thus, the detection roller 10 continuously changes the deformation stroke of the spring according to the change in material thickness. That is, the detection roller 10 transmits the data change to the cutting mechanism 6 by means of the built-in sensor. The L-shaped plate 8 drives the electric rotating rod 11 to move down, and when the electric rotating rod 11 rotates, it drives the gear 12 to revolve. When the gear 12 rotates, it causes the meshing toothed plate 13 to slide horizontally along the bottom of the protective shell 7. The toothed plate 13 drives the cleaning roller 131 to move synchronously. The rotating cleaning roller 131 contacts the focusing lens at the bottom of the cutting mechanism 6, and the horizontal movement of the cleaning roller 131 wipes the focusing lens.

[0026] According to the above embodiments, the dynamic bonding of the detection roller 10 enables the cutting mechanism 6 to adjust the cutting laser intensity in real time based on the sensing data transmitted by the sensor. This avoids the laser beam burning the support plate 4 or other mechanisms after cutting a thin section of the material due to the constant laser beam intensity, which could lead to a safety accident inside the main body 1. By rotating the cleaning roller 131, the focusing lens of the cutting mechanism 6 is kept clear and transparent without scratching it. This prevents dirt from adhering and water vapor from condensing, and avoids the laser beam of the cutting mechanism 6 from scattering or refracting, which could damage the surrounding structure.

[0027] like Figures 1-8 As shown, based on the above embodiment: anti-side-start device 14; The anti-side-lift device 14 includes an elastic telescopic column 141, which is fixedly installed on the inner side wall of the device body 1. A centering plate 142 is fixedly installed on the telescopic end side wall of the elastic telescopic column 141. Several limiting rollers 143 are equidistantly and rotatably installed inside the right end of the centering plate 142.

[0028] The right end of the center plate 142 is hollow, and the surface friction of several limiting rollers 143 increases from bottom to top.

[0029] The anti-side-lift device 14 also includes a fixed frame 144, which is fixedly installed on the side wall of the L-shaped plate 8 near the protective shell 7. A trapezoidal frame 145 is slidably installed inside the fixed frame 144 by a spring, and the top arc surface of the center plate 142 is located on the inclined movement trajectory of the trapezoidal frame 145.

[0030] By using the limiting rollers 143 with different friction forces and the horizontally moving centering plate 142, it is possible to ensure that the flipped material is quickly and horizontally centered and then reattached to the top of the support plate 4. This prevents the material from being laser-cut due to an inclined posture, which would change the thickness of the material during laser cutting. It also avoids the difference between the thickness of the material when it is being cut in an inclined posture and the intensity of the laser beam adjusted by the cutting mechanism 6, further preventing the laser beam from damaging the internal structure or material of the main body 1 of the device.

[0031] In use, when the L-shaped plate 8 moves vertically, it drives the fixed frame 144 to move synchronously. The fixed frame 144 drives the trapezoidal frame 145 to move synchronously. When the trapezoidal frame 145 descends, its inclined surface contacts and abuts the top arc surface of the centering plate 142. At this time, the centering plate 142 generates a horizontal force. The centering plate 142 pulls the telescopic end of the elastic telescopic column 141 to extend synchronously. The centering plates 142 at both ends move closer to each other to contact and push the side wall of the material in a centered position. This ensures that the material is always in a horizontal and centered position on the top of the bearing plate 4. Then, when the detection roller 10 presses down, if the material is placed at a low position on the top of the bearing plate 4, under the contact of the detection roller 10, the material will be subjected to force at one end, causing the other end to tilt and flip upward. At this time, the side wall of the other end of the material contacts the outer wall of the equidistant and rotating limit roller 143. That is, the greater the material thickness and the difference between the left and right heights, the greater the tilting and flipping amplitude. Therefore, the limit roller 143, with its gradually increasing friction, gradually increases the limiting strength of the material.

[0032] According to the above embodiments, by using the limiting rollers 143 with different friction forces and the horizontally moving centering plate 142, it is possible to ensure that the flipped material is quickly and horizontally centered and then reattached to the top of the support plate 4. This prevents the material from being laser-cut due to an inclined posture, thereby changing the thickness of the material during laser cutting. It also avoids the difference between the thickness of the material when it is cut in an inclined posture and the laser beam intensity adjusted by the cutting mechanism 6, further preventing the laser beam from damaging the internal structure or material of the device body 1.

[0033] like Figures 1-8 As shown, based on the above embodiments: anti-interference device 15; The anti-interference device 15 includes a crossbar 151. The left end of the crossbar 151 is fixedly installed on the right side wall of the fixed frame 144. A U-shaped frame 152 is slidably installed through the outer wall of the crossbar 151. A level 153 is installed inside the U-shaped frame 152. The level 153 is connected to the cutting mechanism 6. An L-shaped block 154 is fixedly installed between the side wall of the U-shaped frame 152 and the left side of the T-shaped plate 9.

[0034] A U-shaped frame 155 is fixedly installed on the top of the U-shaped frame 152. A round rod 156 is fixedly installed inside the square groove of the protective shell 7. A mirror panel 157 is rotatably installed on the outer wall of the round rod 156.

[0035] A torsion spring is provided between the round rod 156 and the mirror panel 157. The side wall of the mirror panel 157 contacts the side wall of the U-shaped frame 155 near the center of the protective shell 7, and the mirror panel 157 shields the external light source when the cutting mechanism 6 is working.

[0036] The level 153 can detect whether the material is horizontal or within acceptable limits before laser cutting. If the material is not in good condition, the bearing plate 4 slows down to allow the limiting roller 143 to adjust the material, thus ensuring that the intensity of the laser beam is always within the safe processing standard. The mirror panel 157 is flipped to block the top of the protective shell 7 when the cutting mechanism 6 is cutting the material, preventing the top light source from interfering with the photosensitive element inside the cutting mechanism 6 and thus affecting the operation of the cutting mechanism 6. When not in operation, the square groove on the top of the protective shell 7 ensures that the cutting mechanism 6 is always in a ventilated state.

[0037] In use, the fixed frame 144 drives the crossbar 151 to move synchronously, the crossbar 151 drives the U-shaped frame 152 to move synchronously, and the U-shaped frame 152 drives the level 153 to move synchronously. At the same time, the L-shaped block 154 enables the T-shaped plate 9 to rise, pulling the U-shaped frame 152 and the level 153 to move upward along the crossbar 151. That is, the bottom of the U-shaped frame 152 is always flush with the bottom of the circumferential surface of the detection roller 10. At this time, the bottom of the U-shaped frame 152 detects the top of the material on the top of the support plate 4. When the U-shaped frame 152 rises, it drives the U-shaped frame 155 to move synchronously. When the U-shaped frame 155 rises, it disengages from the mirror panel 157. At this time, the mirror panel 157, which is limited by the round rod 156, generates a rotational force through the torsion spring. That is, the mirror panel 157 flips along the outer wall of the round rod 156 towards the center of the protective shell 7. Then, the mirror panel 157 is tilted to block the square groove of the protective shell 7.

[0038] According to the above embodiments, the level 153 can detect in a timely manner whether the material is in a horizontal position or in a slightly flawed position within an acceptable range before laser cutting. If the material position is not good, the support plate 4 slows down its movement speed, which makes it easier for the limiting roller 143 to adjust the material, thereby ensuring that the intensity of the laser beam is always within the safe processing standard. By flipping and blocking the mirror panel 157, the mirror panel 157 blocks the top of the protective shell 7 when the cutting mechanism 6 cuts the material, preventing the top light source from interfering with the photosensitive element inside the cutting mechanism 6, thereby affecting the operation of the cutting mechanism 6. When not in operation, the square groove on the top of the protective shell 7 ensures that the cutting mechanism 6 is always in a ventilated state.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser safety protection device for CNC machine tools, characterized in that, include: The device body (1) has an observation mechanism (2) on its front side. Two electric slide rails (3) are symmetrically arranged on the inner side wall of the device body (1). A bearing plate (4) is slidably installed between the two electric slide rails (3) at one end close to each other. An electric push rod (5) is arranged inside the top of the observation mechanism (2). A cutting mechanism (6) is fixedly installed at the bottom of the telescopic end of the electric push rod (5). A protective shell (7) is fixedly installed through the outer circumference of the electric push rod (5). Two L-shaped plates (8) are symmetrically installed on the outer side wall of the protective shell (7). The material to be cut is arranged below the L-shaped plates (8) to ensure a height difference between the left and right sides. The anti-side-lift device (14) is parallel to the end. The anti-side-lift device (14) is surrounded by an anti-interference device (15) to prevent external light sources from affecting the cutting mechanism (6) during cutting. The side wall of the L-shaped plate (8) is slidably mounted with a T-shaped plate (9) by a spring. The bottom end of the T-shaped plate (9) is rotatably mounted with a detection roller (10). The two L-shaped plates (8) are rotatably mounted between each other on one side. The outer wall of the electric rotating rod (11) is penetrated and fixedly mounted with a gear (12). The bottom end of the protective shell (7) is slidably mounted with a toothed plate (13). The end of the toothed plate (13) away from the gear (12) is rotatably mounted with a cleaning roller (131).

2. The laser safety protection device for CNC machine tools according to claim 1, characterized in that, The electric push rod (5) is telescopic, the cutting mechanism (6) is laser-designed, and the bottom plane of the cutting mechanism (6) is a focusing lens. The protective shell (7) prevents the cutting mechanism (6) from being bumped by external objects. The top of the protective shell (7) has two square slots symmetrically opened. The T-shaped plate (9) is slidably installed inside the main body (1) of the device on the side away from the L-shaped plate (8).

3. The laser safety protection device for CNC machine tools according to claim 2, characterized in that, The detection roller (10) has a built-in sensor. During the cutting process, the detection roller (10) transmits the thickness change at both ends of the material to the cutting mechanism (6) in real time through the sensor. The toothed plate (13) meshes with the gear (12). The circumferential surface of the clean roller (131) contacts the bottom focusing lens of the cutting mechanism (6).

4. The laser safety protection device for CNC machine tools according to claim 3, characterized in that, The anti-side-lift device (14) includes an elastic telescopic column (141), which is fixedly installed on the inner side wall of the device body (1). A centering plate (142) is fixedly installed on the telescopic end side wall of the elastic telescopic column (141), and several limiting rollers (143) are equidistantly and rotatably installed inside the right end of the centering plate (142).

5. A laser safety protection device for CNC machine tools according to claim 4, characterized in that, The right end of the center plate (142) is hollow, and the surface friction of the limiting rollers (143) increases from bottom to top.

6. A laser safety protection device for CNC machine tools according to claim 5, characterized in that, The anti-side-lift device (14) also includes a fixed frame (144), which is fixedly installed on the side wall of the L-shaped plate (8) near the protective shell (7). A trapezoidal frame (145) is slidably installed inside the fixed frame (144) by a spring. The top arc surface of the center plate (142) is located on the inclined movement trajectory of the trapezoidal frame (145).

7. A laser safety protection device for CNC machine tools according to claim 6, characterized in that, The anti-interference device (15) includes a crossbar (151), the left end of which is fixedly installed on the right side wall of the fixed frame (144). A U-shaped frame (152) is slidably installed through the outer wall of the crossbar (151). A level (153) is installed inside the U-shaped frame (152). The level (153) is connected to the cutting mechanism (6). An L-shaped block (154) is fixedly installed between the side wall of the U-shaped frame (152) and the left side of the T-shaped plate (9).

8. A laser safety protection device for CNC machine tools according to claim 7, characterized in that, A U-shaped frame (155) is fixedly installed on the top of the U-shaped frame (152), and a round rod (156) is fixedly installed inside the square groove of the protective shell (7). A mirror panel (157) is rotatably installed on the outer wall of the round rod (156).

9. A laser safety protection device for CNC machine tools according to claim 8, characterized in that, A torsion spring is provided between the round rod (156) and the mirror panel (157). The side wall of the mirror panel (157) contacts the side wall of the U-shaped frame (155) near the center of the protective shell (7). The mirror panel (157) shields the external light source when the cutting mechanism (6) is working.

Images