Metal cutting device with protection function
By adopting a combination structure of front protection plate, rear protection plate, infrared grating switch and pop-up protection box in the metal cutting device, the problem of easy occlusion of cutting position in the protective structure of the traditional metal cutting device is solved, and higher operating safety is achieved .
Patent Information
- Application Number
- CN202411751992.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-02-07
AI Technical Summary
Traditional metal cutting devices lack a complete protection system and easily block the cutting position, resulting in safety hazards for operators.
A metal cutting device with protective function was designed, using a structure that combines the front protection plate, rear protection plate, infrared grating switch and pop-up protection box. The pop-up protection box is triggered by infrared grating switch to quickly shield the cutting. to prevent the operator from touching the cutting sheet directly with his hands.
Effectively block the hand from entering the cutting area from the front and back, avoiding the operator's hand from directly contacting the cutting sheet, solving the problem that the protective structure of the traditional metal cutting device can easily block the cutting position, and improving operational safety.
Smart Images
Figure CN119387680A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cutting tools, and in particular to a metal cutting device with a protective function. Background Art
[0002] Metal cutting is a critical basic operation in many industrial fields such as profile processing, hardware, mechanical processing, construction, and automobile manufacturing. Although traditional metal cutting devices can meet basic cutting needs, they have many safety and environmental defects that need to be solved urgently.
[0003] For some small batch cutting, most of them use some simple cutting tools, including circular saws, handheld cutting saws, etc., but in factories, most of them require batch cutting. For example, for profiles and plates of a certain size, continuous processing is required. For this processing method, a cutting table is needed for processing. On the one hand, it depends on the cutting table to adapt to long-term processing, and on the other hand, the accuracy is easier to control.
[0004] However, in terms of cutting safety, most traditional cutting devices lack a complete protection system. One is that the cutting blade is directly exposed to the outside, which makes it easy for the operator to observe the cutting position, but if the operator is negligent, the limbs are very likely to get close to the high-speed rotating blade and cause serious cutting accidents. Another is to use a simple shielding cover, but the shielding range is limited and it is inconvenient to observe the cutting process, and it cannot flexibly adapt to the cutting protection needs of workpieces of different sizes; or the guardrail is fixed, which causes obstacles when loading and unloading workpieces and reduces work efficiency. Summary of the invention
[0005] The object of the present invention is to provide a metal cutting device with a protective function, so as to solve the problem in the prior art that the protective structure of the metal cutting device easily blocks the cutting position.
[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A metal cutting device with a protective function comprises a workbench, a cutting slot penetrating the upper and lower sides is arranged on the workbench in the front-to-back direction, a cutting blade is rotatably arranged in the cutting slot, the upper side of the cutting blade is placed on the upper side of the workbench, a motor for driving the cutting blade is arranged on the lower side of the workbench, a front protective plate and a rear protective plate are respectively installed on the upper side of the workbench at the front and rear sides of the cutting slot, a pop-up protective box is installed on the rear protective plate, the pop-up protective box can pop out a protective strip along the top of the cutting blade toward the front protective plate, a transmitting end and a receiving end for constituting an infrared grating switch are respectively installed on the rear protective plate and the front protective plate, the infrared grating switch is used to control the pop-up protective box to pop out the protective strip, and a plurality of transmitting ends and a plurality of receiving ends are arranged on each of the transmitting ends and the receiving ends.
[0007] A further technical solution is that a first pop-up hole is provided at the front end of the pop-up protective box, a protective strip is slidably arranged in the first pop-up hole, a piston slidingly fitted with the first pop-up hole is installed at one end of the protective strip facing the bottom of the first pop-up hole, and a high-pressure gas tank is installed on the upper side of the rear end of the pop-up protective box. The high-pressure gas tank is connected to the first pop-up hole through a ventilation pipe, and the connection between the ventilation pipe and the first pop-up hole is located between the bottom of the first pop-up hole and the piston; an electronic valve for controlling its on and off is installed on the ventilation pipe.
[0008] A further technical solution is that the protective strip includes a main strip and a sub-strip, the main strip is placed in the first pop-up hole, and the rear end of the main strip is connected to the piston, the front end of the main strip is provided with a second pop-up hole, the sub-strip is slidably arranged in the second pop-up hole, the bottom of the second pop-up hole is connected to the rear end of the sub-strip through a spring, and the front end of the pop-up protective box is magnetically installed with a sealing plate for sealing the first pop-up hole and the second pop-up hole.
[0009] A further technical solution is that electromagnets are installed on the upper and lower sides of the front end of the pop-up protective box, and iron blocks are installed on the same side of the sealing plate near the upper and lower ends.
[0010] A further technical solution is that first limiting grooves are arranged along the front and rear of the upper and lower hole walls of the first ejection hole, first sliders are arranged on the upper and lower sides of the piston, and the two first sliders are slidably arranged in the two first limiting grooves respectively.
[0011] A further technical solution is that the upper and lower hole walls of the second pop-up hole are both provided with second limiting sliding grooves along the front and back, and second sliding blocks are both provided on the upper and lower sides of the rear end of the auxiliary strip, and the two second sliding blocks are respectively slidably set in the two first limiting sliding grooves.
[0012] A further technical solution is that the rear end of the pop-up protection box is provided with an exhaust hole connected to the first pop-up hole and a sealing plug for sealing the exhaust hole.
[0013] A further technical solution is that the cutting slit extends to the rear side of the rear guard plate, and a passing slit for the cutting blade to pass through is provided on the rear guard plate, and a protective cover for covering the cutting slit is provided on the rear side of the rear guard plate.
[0014] A further technical solution is that a slide rail is provided on the lower side of the workbench along the front-to-back direction, a moving seat is slidably connected to the slide rail, and an electric push rod is also installed on the lower side of the workbench for driving the moving seat to move forward and backward along the slide rail. The cutting blade is rotatably installed on the upper side of the moving seat through a transmission shaft, and the motor is installed on the upper side of the moving seat and is connected to the transmission shaft through a transmission belt.
[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting the front guard plate and the rear guard plate, the front guard plate and the rear guard plate can be used to block the hands from entering the cutting area from the front and back during cutting; 2. By setting the infrared grating switch and the pop-up protection box in coordination, when the operator's hand bypasses the front guard plate or the rear guard plate to enter the cutting area, the pop-up protection box is triggered to pop out the protection strip to quickly shield the cutting blade, thereby avoiding the operator's hand from directly contacting the cutting blade, solving the problem in the prior art that the protection structure of the metal cutting device easily blocks the cutting position. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The figure is an overall schematic diagram of a metal cutting device with a protective function according to the present invention.
[0017] Figure 2 This is a schematic diagram above a workbench of a metal cutting device with a protective function according to the present invention.
[0018] Figure 3 The present invention is a schematic cross-sectional view of a pop-up protection box of a metal cutting device with a protection function.
[0019] Figure 4 The present invention is a schematic diagram of a slide rail and a moving seat of a metal cutting device with a protective function.
[0020] Icons: 1- workbench, 2- cutting slit, 3- cutting disc, 4- motor, 5- front protective plate, 6- rear protective plate, 7- pop-up protective box, 8- transmitting end, 9- receiving end, 10- first pop-up hole, 11- piston, 12- high-pressure gas tank, 13- ventilation pipe, 14- electronic valve, 15- main bar, 16- secondary bar, 17- second pop-up hole, 18- spring, 19- sealing plate, 20- electromagnet, 21- first limiting slide, 22- first slider, 23- second limiting slide, 24- second slider, 25- exhaust hole, 26- sealing plug, 27- slide rail, 28- moving seat, 29- electric push rod, 30- transmission shaft, 31- through slit, 32- protective cover. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0022] Figures 1 to 4 An embodiment of the present invention is shown.
[0023] Example: A metal cutting device with a protective function comprises a workbench 1, a cutting slit 2 penetrating the upper and lower sides is arranged on the workbench 1 along the front-to-back direction, a cutting blade 3 is rotatably arranged in the cutting slit 2, the upper side of the cutting blade 3 is placed on the upper side of the workbench 1, a motor 4 for driving the cutting blade 3 is arranged on the lower side of the workbench 1, a front guard plate 5 and a rear guard plate 6 are respectively installed on the upper side of the workbench 1 at the front and rear sides of the cutting slit 2, a pop-up protective box 7 is installed on the rear guard plate 6, the pop-up protective box 7 can pop out a protective strip along the upper side of the cutting blade 3 toward the front guard plate 5, a transmitting end 8 and a receiving end 9 for constituting an infrared grating switch are respectively installed on the rear guard plate 6 and the front guard plate 5, the infrared grating switch is used to control the pop-up protective box 7 to pop out the protective strip, and a plurality of transmitting ends 8 and receiving ends 9 are arranged. By arranging the front guard plate 5 and the rear guard plate 6, the front guard plate 5 and the rear guard plate 6 can be used to prevent hands from entering the cutting area from the front and the back during cutting. By setting up an infrared grating switch and a pop-up protective box 7, when the operator's hand bypasses the front protective plate 5 or the rear protective plate 6 to enter the cutting area, the pop-up protective box 7 is triggered to pop out a protective strip to quickly shield the cutting blade 3, thereby avoiding direct contact between the operator's hand and the cutting blade 3, thereby solving the problem in the prior art that the protective structure of the metal cutting device easily blocks the cutting position.
[0024] The front end of the pop-up protection box 7 is provided with a first pop-up hole 10, a protection strip is slidably provided in the first pop-up hole 10, and a piston 11 is installed at one end of the protection strip facing the bottom of the first pop-up hole 10, which is slidably fitted with the first pop-up hole 10. A high-pressure gas tank 12 is installed on the upper side of the rear end of the pop-up protection box 7, and the high-pressure gas tank 12 is connected to the first pop-up hole 10 through a vent pipe 13, and the connection between the vent pipe 13 and the first pop-up hole 10 is disposed between the bottom of the first pop-up hole 10 and the piston 11; an electronic valve 14 for controlling its on and off is installed on the vent pipe 13. During normal use, the electronic valve 14 is in a closed state, and the high-pressure gas tank 12 stores high-pressure gas. With the help of the infrared grating switch as a trigger condition, when the operator's hand blocks the infrared rays, the infrared grating switch is triggered, and the infrared grating switch opens the electronic valve 14 through the controller, and the high-pressure gas in the high-pressure gas tank 12 instantly rushes into the first pop-up hole 10, pushing the piston 11 to move toward the outside of the first pop-up hole 10, so that the piston 11 will push the protective strip to pop out from the first pop-up hole 10 in a very short time, thereby forming a protection above the cutting blade 3. When the operator is in direct contact with the cutting blade 3, and as a linkage, the infrared grating switch will also control the motor 4 to stop rotating through the controller when it is triggered, thereby driving the cutting blade 3 to decelerate until it stops.
[0025] The protective strip includes a main strip 15 and a sub-strip 16. The main strip 15 is placed in the first pop-up hole 10, and the rear end of the main strip 15 is connected to the piston 11. The front end of the main strip 15 is provided with a second pop-up hole 17. The sub-strip 16 is slidably arranged in the second pop-up hole 17. The bottom of the second pop-up hole 17 is connected to the rear end of the sub-strip 16 by a spring 18. The front end of the pop-up protective box 7 is magnetically mounted with a sealing plate 19 for blocking the first pop-up hole 10 and the second pop-up hole 17. When the sealing plate 19 seals the second pop-up hole 17, the sub-strip 16 compresses the spring 18. When the high-pressure gas pushes out the main strip 15, the sealing plate 19 is pushed open. The elastic potential energy accumulated by the spring 18 will push the sub-strip 16 to quickly pop out of the second pop-up hole 17. The two-stage pop-up protection is formed by the main strip 15 and the sub-strip 16, which can accelerate the protection of the protective strip above the cutting blade 3. Furthermore, when the operator's hand is already between the front end of the protective strip and the front protective plate 5 when the protective strip pops out, the protective strip will hit the operator's hand when it pops out, pushing the hand toward the front protective plate 5. At this time, with the help of the auxiliary strip 16 and the spring 18, even if the operator's hand is squeezed by the auxiliary strip 16 and the front protective plate 5, the auxiliary strip 16 can compress the spring 18 to reduce the damage, thereby avoiding serious damage caused by the strong impact.
[0026] Electromagnets 20 are installed on the upper and lower sides of the front end of the pop-up protective box 7, and iron blocks are installed on the same side of the sealing plate 19 near the upper and lower ends. By setting the electromagnet 20, the magnetic force can be controlled by powering on and off. When the cutting device is used normally, the electromagnet 20 is powered on, and the sealing plate 19 is adsorbed on the front end of the pop-up protective box 7 to close the main strip 15 and the secondary strip 16. When the infrared grating switch is triggered, the electromagnet 20 is powered off by the controller, so that when the main strip 15 and the secondary strip 16 pop out, they will not be blocked by the sealing plate 19 and can pop out quickly. Since the sealing plate 19 will be pushed to move at high speed when the main strip 15 and the secondary strip 16 pop out, two solutions can be adopted to avoid accidental injury to the operator when flying out. One is that the surface of the sealing plate 19 is coated with rubber, silicone and other materials as a buffer layer, and the other is to use steel ropes and the like to connect with the rear protective plate 6. When popping out, the sealing plate 19 will not fly out under the action of the steel rope.
[0027] The first pop-up hole 10 is provided with first limiting grooves 21 along the front and rear of the upper and lower hole walls, and the piston 11 is provided with first sliders 22 on the upper and lower sides, and the two first sliders 22 are respectively slidably arranged in the two first limiting grooves 21. By providing the first limiting grooves 21 and the first sliders 22, the main bar 15 will not be completely ejected from the first pop-up hole 10 when it is ejected.
[0028] The second pop-up hole 17 is provided with second limiting sliding grooves 23 along the front and rear of the upper and lower hole walls, and the second sliders 24 are provided at the upper and lower sides of the rear end of the auxiliary bar 16, and the two second sliders 24 are respectively slidably disposed in the two first limiting sliding grooves 21. With the help of the second limiting sliding grooves 23 and the second sliders 24, the auxiliary bar 16 will not be completely ejected from the second pop-up hole 17 when it is ejected.
[0029] The rear end of the pop-up protection box 7 is provided with an exhaust hole 25 connected to the first pop-up hole 10 and a sealing plug 26 for sealing the exhaust hole 25. By providing the sealing plug 26, when resetting after popping up, the sealing plug 26 can be opened, so that when the main strip 15 is pushed into the first pop-up hole 10, the gas in the first pop-up hole 10 is discharged through the exhaust hole 25. After resetting is completed, the exhaust hole 25 can be re-sealed by the sealing plug 26.
[0030] A slide rail 27 is provided on the lower side of the workbench 1 along the front-back direction, and a moving seat 28 is slidably connected to the slide rail 27. An electric push rod 29 for driving the moving seat 28 to move forward and backward along the slide rail 27 is also installed on the lower side of the workbench 1. The cutting blade 3 is rotatably installed on the upper side of the moving seat 28 through the transmission shaft 30. The motor 4 is installed on the upper side of the moving seat 28 and is connected to the transmission shaft 30 through a transmission belt. The metal workpiece to be cut is fixed at the position of the cutting seam 2. When cutting, the moving seat 28 is driven to move by the electric push rod 29, so that the cutting blade 3 can be driven to move along the cutting seam 2. The cutting blade 3 starts cutting after contacting the metal workpiece.
[0031] The cutting slit 2 extends to the rear side of the rear guard plate 6, and a through slit 31 for the cutting blade 3 to pass through is provided on the rear guard plate 6, and a protective cover 32 for covering the cutting slit 2 is provided on the rear side of the rear guard plate 6. By providing the protective cover 32 and the through slit 31, before cutting, the electric push rod 29 drives the moving seat 28 and the cutting blade 3 to move, so that the cutting blade 3 is stored in the protective cover 32. When cutting, the cutting blade 3 moves from the protective cover 32 through the through slit 31 to between the front guard plate 5 and the rear guard plate 6 to cut the metal workpiece.
[0032] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and modifications may be made to the components and / or layout of the subject combination layout. In addition to the variations and modifications made to the components and / or layout, other uses will also be apparent to those skilled in the art.
Claims
1. A metal cutting device with a protective function, comprising a workbench (1), wherein a cutting slot (2) penetrating the upper and lower sides is arranged on the workbench (1) along the front-to-back direction, a cutting blade (3) is rotatably arranged in the cutting slot (2), the upper side of the cutting blade (3) is placed on the upper side of the workbench (1), and a motor (4) for driving the cutting blade (3) is arranged on the lower side of the workbench (1), characterized in that: A front protective plate (5) and a rear protective plate (6) are respectively installed on the upper side of the workbench (1) at the front and rear sides of the cutting seam (2); a pop-up protective box (7) is installed on the rear protective plate (6); the pop-up protective box (7) can pop out a protective strip along the top of the cutting blade (3) toward the front protective plate (5); a transmitting end (8) and a receiving end (9) for constituting an infrared grating switch are respectively installed on the rear protective plate (6) and the front protective plate (5); the infrared grating switch is used to control the pop-up protective box (7) to pop out the protective strip; a plurality of the transmitting ends (8) and the receiving ends (9) are provided.
2. A metal cutting device with protective function according to claim 1, characterized in that: The front end of the pop-up protection box (7) is provided with a first pop-up hole (10), the protection strip is slidably arranged in the first pop-up hole (10), and one end of the protection strip facing the bottom of the first pop-up hole (10) is provided with a piston (11) which is slidably fitted with the first pop-up hole (10), and a high-pressure gas tank (12) is installed on the upper side of the rear end of the pop-up protection box (7), the high-pressure gas tank (12) is connected to the first pop-up hole (10) through a ventilation pipe (13), and the connection between the ventilation pipe (13) and the first pop-up hole (10) is disposed between the bottom of the first pop-up hole (10) and the piston (11); the ventilation pipe (13) is provided with an electronic valve (14) for controlling its on and off.
3. A metal cutting device with protective function according to claim 2, characterized in that: The protective strip comprises a main strip (15) and a secondary strip (16); the main strip (15) is disposed in the first ejection hole (10), and the rear end of the main strip (15) is connected to the piston (11); the front end of the main strip (15) is provided with a second ejection hole (17); the secondary strip (16) is slidably disposed in the second ejection hole (17); the bottom of the second ejection hole (17) is connected to the rear end of the secondary strip (16) by a spring (18); and a sealing plate (19) for sealing the first ejection hole (10) and the second ejection hole (17) is magnetically mounted at the front end of the pop-up protective box (7).
4. The metal cutting device with protective function according to claim 3, characterized in that: Electromagnets (20) are installed on the upper and lower sides of the front end of the pop-up protection box (7), and iron blocks are installed on the same side of the sealing plate (19) at positions close to the upper and lower ends.
5. The metal cutting device with protective function according to claim 3, characterized in that: The upper and lower hole walls of the first ejection hole (10) are both provided with first limiting sliding grooves (21) along the front and rear, and the upper and lower sides of the piston (11) are both provided with first sliding blocks (22), and the two first sliding blocks (22) are respectively slidably disposed in the two first limiting sliding grooves (21).
6. The metal cutting device with protective function according to claim 3, characterized in that: The upper and lower hole walls of the second ejection hole (17) are both provided with second limiting sliding grooves (23) along the front and rear, and the upper and lower sides of the rear end of the auxiliary strip (16) are both provided with second sliding blocks (24), and the two second sliding blocks (24) are respectively slidably disposed in the two first limiting sliding grooves (21).
7. The metal cutting device with protective function according to claim 3, characterized in that: The rear end of the pop-up protection box (7) is provided with an exhaust hole (25) connected to the first ejection hole (10) and a sealing plug (26) for sealing the exhaust hole (25).
8. The metal cutting device with protective function according to claim 1, characterized in that: A slide rail (27) is provided on the lower side of the workbench (1) along the front-to-back direction, a movable seat (28) is slidably connected to the slide rail (27), an electric push rod (29) for driving the movable seat (28) to move forward and backward along the slide rail (27) is also installed on the lower side of the workbench (1), the cutting blade (3) is rotatably installed on the upper side of the movable seat (28) via a transmission shaft (30), the motor (4) is installed on the upper side of the movable seat (28), and is transmission-connected to the transmission shaft (30) via a transmission belt.
9. The metal cutting device with protective function according to claim 1, characterized in that: The cutting slit (2) extends to the rear side of the rear protective plate (6), and the rear protective plate (6) is provided with a passing slit (31) for the cutting blade (3) to pass through, and the rear side of the rear protective plate (6) is provided with a protective cover (32) for covering the cutting slit (2).