A table saw with safety protection

Abstract

The present invention discloses a table saw with safety protection, which relates to the technical field of table saws; it includes a support table with a saw slot in the middle. One end of the support table is rotatably connected to a swing shaft, and one end of the swing shaft is fixedly connected to a swing frame. One end of the swing frame is fixedly connected with two pulse signal sensors, a motor support frame, an electromagnet assembly one and an electromagnet assembly two. One end of the motor support frame is slidably connected with a drive motor, and the power output end of the drive motor is fixedly connected with a saw blade. One end of the pulse signal sensor is movably connected to the saw blade. The support table is fixedly connected with a chain box below, and a plurality of chain drive components are rotatably connected inside the chain box; when a person's hand touches the saw blade, the circuit is connected, the electromagnet assembly one and the electromagnet assembly two are powered on and started, and each adsorbs the chain limit rod on one side to move, so that the rigid chains on both sides move inward at the same time, pushing up the push plate and pushing the person's hand away from the saw blade to separate, realizing the separation of the person's hand and the saw blade and reducing the injury.

Description

Technical Field

[0001] The present invention relates to the technical field of table saws, and particularly to a table saw with safety protection. Background Art

[0002] A table saw is an important woodworking tool used for cutting wood. It is a desktop machine driven by an electric motor and can achieve precise cutting. The design of the table saw aims to provide efficient and precise cutting functions and is suitable for various wood processing needs. This tool is very common in the woodworking industry because it can perform a variety of cutting operations, including straight cutting, miter cutting, dado cutting, etc., covering almost all basic woodworking cutting needs. However, if not operated carefully, it is easy to cut the worker's fingers and cause safety accidents. Therefore, a safety protection device is an important part of the table saw. Currently, a relatively good protection method on the market is to apply weak electricity to the saw blade. When a finger touches the saw blade, the circuit is connected immediately, and a brake plate is used to stop the saw blade to prevent the rotating saw blade from hurting the finger.

[0003] After retrieval, a patent with the Chinese patent publication number CN111844246A discloses a safe and reliable push table saw assembly, including a base. The inside of the left side of the base is fixedly connected with a first vertical rod, and the right side of the bottom of the first vertical rod is fixedly connected with a first button. For this safe and reliable push table saw assembly, when a wooden board passes through the first contact, the first contact will control the first inclined block to press the first striker, so that the first striker presses the first button, thereby starting the device. When the wooden board touches the second contact, the second contact will control the second inclined block to press the second striker. The above patent has the problem that it lacks a function that can quickly bounce the finger away from the saw blade when the user's finger touches the saw blade, preventing the saw blade from continuing to contact the finger and aggravating the injury. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies in the prior art and propose a table saw with safety protection.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A table saw with safety protection comprises a supporting table with a saw groove in the middle, one end of the supporting table is rotatably connected to a swing shaft, one end of the swing shaft is fixedly connected to a swing frame, one end of the swing frame is fixedly connected to two pulse signal sensors, a motor supporting frame, an electromagnet assembly 1 and an electromagnet assembly 2, one end of the motor supporting frame is slidably connected to a driving motor, a power output end of the driving motor is fixedly connected to a saw blade, one end of the pulse signal sensor is movably connected to the saw blade, a chain box is fixedly connected below the supporting table, a plurality of chain driving assemblies are rotatably connected inside the chain box, one end of the chain driving assembly is transmission-connected to two rigid chains, one end of the rigid chain is fixedly connected to a plurality of rubber columns, the other end of the rigid chain is fixedly connected to a push plate, one end of the chain box is slidably connected to a chain limiting rod, one end of the chain limiting rod is fixedly connected to a limiting plug rod 2, one end of the limiting plug rod 2 is slidably connected to one end of a chain driving assembly on one side, and a spring 2 is fixedly connected to the chain limiting rod and one end of the chain box.

[0007] Preferably: the chain drive assembly includes two chain drive wheels, two transmission gears, an idler wheel, a spring five and a positioning groove one, one end of the chain drive wheel is fixedly connected to the transmission gear, one end of the chain drive wheel, the transmission gear and the idler wheel are rotatably connected to the chain box, one end of the transmission gear and the chain box is fixedly connected to the spring five, one end of the positioning groove one is opened at one end of the transmission gear on one side, one end of the limit rod two is slidably connected to the positioning groove one, and both sides of the idler wheel are meshed with the transmission gear; after the limit rod two is disengaged from the positioning groove one, the chain drive wheels on both sides rotate under the drive of the spring five, so that the rigid chains on both sides move inward at the same time; when the two rigid chains move inward and contact, they can bite through the rubber column, and the rigid chain moves upward to push up the push plate.

[0008] Further: one end of the driving motor is fixedly connected to a support plate, one end of the electromagnet assembly is slidably connected to a motor limit rod, one end of the motor limit rod is fixedly connected to multiple limit rods, and one end of the motor limit rod and the motor support frame is fixedly connected to a spring.

[0009] Furthermore: an air suction port and a saw groove are opened at one end of the support platform, an air suction hood is fixedly connected to the bottom of the support platform, one end of the air suction hood is fixedly connected to a filter box, one end of the filter box is fixedly connected to a dust collector, and one end of the dust collector is fixedly connected to an exhaust pump.

[0010] As a preferred solution of the present invention: one end of the swing frame is fixedly connected to a brake support platform, one end of the brake support platform is rotatably connected to a brake clamping plate, one end of the brake clamping plate is provided with a brake groove, a spring four is fixedly connected to one end of the brake clamping plate and the brake support platform, and one end of the brake support platform is slidably connected to a locking assembly.

[0011] As a further solution of the present invention: The locking assembly includes a movable clamping plate, spring three, a claw and positioning groove two. One end of the movable clamping plate is slidably connected to the braking support platform. One end of the movable clamping plate and the braking support platform are fixedly connected to spring three. One end of the claw is fixedly connected to the movable clamping plate. One end of the braking clamping plate is provided with positioning groove two.

[0012] As a still further solution of the present invention: A blowing pump is fixedly connected above the support platform. One end of the blowing pump is fixedly connected to a paint spraying pipe. One end of the paint spraying pipe is slidably connected to a lifting spray nozzle. One end of the lifting spray nozzle is rotatably connected to a rotating spray nozzle.

[0013] On the basis of the foregoing solution: One side of one end of the chain drive wheel is fixedly connected to a crown gear one. One end of the crown gear one is drivingly connected to a crown gear two. One end of the crown gear two is rotatably connected to the support platform.

[0014] On the basis of the foregoing solution: A limiting box is fixedly connected below the support platform. A rotating shaft is rotatably connected inside the limiting box. An observation window is opened at one end of the support platform. One end of a push plate is fixedly connected to a limiting belt. One end of the limiting belt is fixedly connected to the rotating shaft.

[0015] On the basis of the foregoing solution: A worm is rotatably connected to one end of the support platform. One end of the worm is drivingly connected to a worm gear. One end of the worm gear is fixedly connected to the rotating shaft.

[0016] The beneficial effects of the present invention are as follows:

[0017] A table saw with safety protection. When a person's hand touches the saw blade, the electromagnetic solenoid assembly one and the electromagnetic solenoid assembly two are powered on and started, respectively adsorbing the chain limiting rods on one side to move, so that the rigid chains on both sides move inward at the same time, pushing up the push plate, pushing the person's hand away from the saw blade, realizing the separation of the person's hand and the saw blade, and reducing injuries.

[0018] A table saw with safety protection. When the electromagnetic solenoid assembly one starts to work, it can adsorb the motor limiting rod to make the limiting insertion rod one leave the opening inside the support plate. At this time, the driving motor drives the saw blade to drop while the push plate pushes the person's hand away, which can further prevent the saw blade from hurting the hand.

[0019] A table saw with safety protection. The exhaust pump and the blowing pump can absorb the debris generated during work, prevent dust from filling the air and debris from accumulating during work, enable the user to more intuitively see the position of the fingers, and prevent cuts.

[0020] A table saw with safety protection. When the electromagnetic solenoid assembly one and the electromagnetic solenoid assembly two are started, the braking clamping plate pops up, and the teeth of the saw blade are fixed by the braking groove, so that the saw blade stops rotating. At the same time, the electromagnetic solenoid assembly one and the electromagnetic solenoid assembly two can adsorb the metal debris generated by the impact from both sides to prevent the metal debris from popping out and hurting people.

[0021] A table saw with safety protection restricts the height to which the push board can pop out through a limit belt, sets different heights to which the push boards on both sides can pop out, causes the material to fall to the side with a lower pop-up height after being pushed up, and allows people to stand on the other side to work and prevent being injured by smashing. Description of the Drawings

[0022] Figure 1 is a front view structural schematic diagram of a table saw with safety protection proposed by the present invention;

[0023] Figure 2 is an internal structural schematic diagram of a table saw with safety protection proposed by the present invention;

[0024] Figure 3 is a partial structural schematic diagram of the saw slot of a table saw with safety protection proposed by the present invention;

[0025] Figure 4 is an installation structural schematic diagram of the electromagnet assembly of a table saw with safety protection proposed by the present invention;

[0026] Figure 5 is an installation structural schematic diagram of the chain limit rod of a table saw with safety protection proposed by the present invention;

[0027] Figure 6 is an internal structural schematic diagram of the chain box of a table saw with safety protection proposed by the present invention;

[0028] Figure 7 is an installation structural schematic diagram of the rigid chain of a table saw with safety protection proposed by the present invention;

[0029] Figure 8 is a side view schematic diagram of the electromagnet assembly of a table saw with safety protection proposed by the present invention;

[0030] Figure 9 is an installation structural schematic diagram of the brake clamping plate of a table saw with safety protection proposed by the present invention;

[0031] Figure 10 is an exploded structural schematic diagram of the movable clamping plate of a table saw with safety protection proposed by the present invention.

[0032] In the figure: 1, support platform; 2, saw blade; 3, saw slot; 4, air suction port; 5, air suction hood; 6, filter box; 7, dust collector; 8, exhaust pump; 9, air blowing pump; 10, paint spraying pipe; 11, lifting spray nozzle; 12, rotating spray nozzle; 13, push plate; 14, swing shaft; 15, swing frame; 16, pulse signal sensor; 17, drive motor; 18, support plate; 19, electromagnet assembly one; 20, motor support frame; 21, motor limit rod; 22, spring one; 23, limit insertion rod one; 24, limit box; 25, chain box; 26, chain limit rod; 27, spring two; 28, limit insertion rod two; 29, crown gear one; 30, crown gear two; 31, worm; 32, worm gear; 33, rotating shaft; 34, limit belt; 35, chain drive wheel; 36, transmission gear; 37, idler gear; 38, rigid chain; 39, rubber column; 40, positioning slot one; 41, braking support platform; 42, braking clamping plate; 43, braking slot; 44, movable clamping plate; 45, spring three; 46, claw; 47, spring four; 48, electromagnet assembly two; 49, positioning slot two; 50, spring five; 51, observation window. Detailed implementation mode

[0033] The technical solution of this patent will be further described in detail below in combination with the specific implementation mode.

[0034] The embodiments of this patent will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation to this patent.

[0035] Embodiment 1: A table saw with safety protection, as Figures 1-10As shown, it includes a support table 1 with a saw groove 3 in the middle, a control component is installed inside the support table 1, one end of the support table 1 is rotatably connected to a swing shaft 14, one end of the swing shaft 14 is fixedly connected to a swing frame 15, one end of the swing frame 15 is fixedly connected to two pulse signal sensors 16, a motor support frame 20, an electromagnet component 19 and an electromagnet component 2 48, one end of the motor support frame 20 is slidably connected to a drive motor 17, a power output end of the drive motor 17 is fixedly connected to a saw blade 2, one end of the pulse signal sensor 16 is movably connected to the saw blade 2, the pulse signal sensor 16 is electrically connected to the control component, the electromagnet component 19 and the electromagnet component 2 48 in the support table 1, and the two pulse signal sensors 16 are respectively located on both sides of the saw blade 2, one is used to apply a 12v, 200kHz pulse signal to the saw blade, and the other is used to receive the pulse signal and transmit the signal to the support table 1 The internal control component is detected; the pulse signal received when the device cuts a dry object is a normal value. When the human body contacts the saw blade, the pulse signal will fluctuate violently. When multiple violently fluctuating pulse signals appear, it means that the human body is in contact with the saw blade. At this time, the electromagnet component 19 and the electromagnet component 2 48 can be started. A chain box 25 is fixedly connected below the support table 1. The chain box 25 is internally rotatably connected with multiple chain drive components. One end of the chain drive component is transmission-connected with two rigid chains 38. One end of the rigid chain 38 is fixedly connected with multiple rubber columns 39. The other end of the rigid chain 38 is fixedly connected with a push plate 13. One end of the chain box 25 is slidably connected with a chain limit rod 26. One end of the chain limit rod 26 is fixedly connected with a limit plug rod 28. One end of the limit plug rod 28 is slidably connected to one end of the chain drive component on one side. The chain limit rod 26 and one end of the chain box 25 are fixedly connected with a spring 27;

[0036] The chain drive assembly includes two chain drive wheels 35, two transmission gears 36, an idler wheel 37, a spring 50 and a positioning groove 1 40. One end of the chain drive wheel 35 is fixedly connected to the transmission gear 36. One end of the chain drive wheel 35, the transmission gear 36 and the idler wheel 37 are rotatably connected to the chain box 25. One end of the transmission gear 36 and the chain box 25 is fixedly connected to the spring 50. One end of the positioning groove 1 40 is opened at one end of the transmission gear 36. One end of the limiting plug rod 28 is slidably connected to the positioning groove 1 40. Both sides of the idler wheel 37 are meshed with the transmission gear 36.

[0037] When the device is cutting, the driving motor 17 can drive the saw blade 2 to rotate in the saw slot 3. The user can push the material from one side to the saw blade 2 for cutting. When it is detected that a human body touches the saw blade 2, at this time, the driving motor 17 stops working, and the electromagnet assembly one 19 and the electromagnet assembly two 48 are energized and started. Each adsorbs the chain limit rod 26 located on one side to move, so that the limit insertion rod two 28 disengages from the positioning slot one 40. Subsequently, under the drive of the spring five 50, the chain drive wheels 35 on both sides rotate back, so that the rigid chains 38 on both sides move inward at the same time. When the two rigid chains 38 contact, they can bite through the rubber column 39, and at the same time push up the push plate 13 to push the human hand away from the saw blade 2, realizing the separation of the human hand and the saw blade 2 and reducing the injury.

[0038] The idler wheel 37 can make the transmission gears 36 on both sides rotate in opposite directions to push the rigid chains 38 from both sides.

[0039] In order to solve the problem of further reducing the injury by making the saw blade 2 fall while pushing away the human hand; as Figures 1-10 shown, one end of the driving motor 17 is fixedly connected with a support plate 18. One end of the electromagnet assembly one 19 is slidably connected with a motor limit rod 21. One end of the motor limit rod 21 is fixedly connected with a plurality of limit insertion rods one 23. One end of the motor limit rod 21 and the motor support frame 20 is fixedly connected with a spring one 22;

[0040] There are openings at one end of the support plate 18 and the motor support frame 20. When the driving motor 17 is working normally, the limit insertion rod one 23 is inserted into the hole to fix the driving motor 17. When the electromagnet assembly one 19 starts to work, it can adsorb the motor limit rod 21 and make the limit insertion rod one 23 leave the opening inside the support plate 18. At this time, the driving motor 17 drives the saw blade 2 to fall while the push plate 13 pushes away the human hand, which can further prevent the saw blade 2 from hurting the hand.

[0041] In order to solve the problem that a large amount of debris will be generated when the device is working; as Figures 1-10 shown, one end of the support table 1 is provided with an air suction port 4 and a saw slot 3. The air suction cover 5 is fixedly connected below the support table 1. One end of the air suction cover 5 is fixedly connected with a filter box 6. One end of the filter box 6 is fixedly connected with a dust collector 7. One end of the dust collector 7 is fixedly connected with an exhaust pump 8;

[0042] When the exhaust pump 8 works, it can suck the debris from the air suction port 4 and one side of the saw slot 3, and filter and collect the debris through the filter box 6 and the dust collector 7, preventing dust from diffusing and debris from accumulating during work, so that the user can more intuitively see the position of the finger and prevent cutting.

[0043] In order to solve the problem of making the saw blade 2 stop working instantly when the finger touches the saw blade 2; as Figures 1-10As shown, one end of the swing frame 15 is fixedly connected to a brake support platform 41. One end of the brake support platform 41 is rotatably connected to a brake clamping plate 42. One end of the brake clamping plate 42 is provided with a brake groove 43. A spring four 47 is fixedly connected between one end of the brake clamping plate 42 and the brake support platform 41. One end of the brake support platform 41 is slidably connected to a locking assembly;

[0044] The locking assembly includes a movable clamping plate 44, a spring three 45, a claw 46 and a positioning groove two 49. One end of the movable clamping plate 44 is slidably connected to the brake support platform 41. A spring three 45 is fixedly connected between one end of the movable clamping plate 44 and the brake support platform 41. One end of the claw 46 is fixedly connected to the movable clamping plate 44. A positioning groove two 49 is provided at one end of the brake clamping plate 42;

[0045] When the electromagnet assembly one 19 and the electromagnet assembly two 48 are activated, they can adsorb the movable clamping plate 44 to move outward from both sides. At this time, the claw 46 disengages from the positioning groove two 49 and no longer fixes the brake clamping plate 42. Under the action of the spring four 47, the brake clamping plate 42 bounces up to fix the saw teeth of the saw blade 2 through the brake groove 43, so that the saw blade 2 stops rotating. At the same time, the electromagnet assembly one 19 and the electromagnet assembly two 48 can adsorb the metal debris generated by the impact from both sides to prevent the metal debris from popping out and hurting people.

[0046] In order to further solve the problem that debris will accumulate on the surface of the material during work; as Figures 1-10 shown, a blowing pump 9 is fixedly connected above the support platform 1. One end of the blowing pump 9 is fixedly connected to a paint spraying pipe 10. One end of the paint spraying pipe 10 is slidably connected to a lifting spray nozzle 11. One end of the lifting spray nozzle 11 is rotatably connected to a rotating spray nozzle 12;

[0047] The rotating spray nozzle 12 can adjust the jet angle and can blow away the debris accumulated on the surface of the material from above to prevent accumulation.

[0048] When this embodiment is in use, when the device is cutting, the driving motor 17 can drive the saw blade 2 to rotate in the saw slot 3. The user can push the material from one side to the saw blade 2 for cutting. When it is detected that a person touches the saw blade 2, at this time, the driving motor 17 stops working, and the electromagnet assembly one 19 and the electromagnet assembly two 48 are powered on and activated, and each adsorbs the chain limiting rod 26 located on one side to move, so that the limiting insertion rod two 28 disengages from the positioning groove one 40. Subsequently, under the drive of the spring five 50, the chain drive wheels 35 on both sides rotate back, so that the rigid chains 38 on both sides move inward at the same time. When the two rigid chains 38 contact, they can bite through the rubber column 39, and at the same time push up the push plate 13 to push the human hand away from the saw blade 2, realizing the separation of the human hand and the saw blade 2 and reducing the injury;

[0049] The support plate 18 and one end of the motor support frame 20 are provided with openings. When the driving motor 17 is working properly, the first limit insertion rod 23 is inserted into the opening to fix the driving motor 17. When the first electromagnet assembly 19 starts to work, it can adsorb the motor limit rod 21 and make the first limit insertion rod 23 leave the opening inside the support plate 18. At this time, the driving motor 17 drops while the push plate 13 pushes away the human hand, which can further prevent the saw blade 2 from hurting the hand.

[0050] When the exhaust pump 8 works, it can suck the debris from the suction port 4 and one side of the saw slot 3, and filter and collect the debris through the filter box 6 and the dust collector 7, preventing dust from spreading and debris from accumulating during work, allowing the user to more intuitively see the position of the fingers and preventing cuts.

[0051] When the first electromagnet assembly 19 and the second electromagnet assembly 48 are activated, they can adsorb the movable clamping plate 44 to move outward from both sides. At this time, the clamping claw 46 disengages from the second positioning groove 49 and no longer fixes the braking clamping plate 42. Under the action of the fourth spring 47, the braking clamping plate 42 bounces up and fixes the saw teeth of the saw blade 2 through the braking groove 43, stopping the rotation of the saw blade 2. At the same time, the first electromagnet assembly 19 and the second electromagnet assembly 48 can adsorb the metal debris generated by the impact from both sides, preventing the metal debris from popping out and hurting people.

[0052] The rotating nozzle 12 can adjust the jet angle and can blow away the debris accumulated on the surface of the material from above to prevent accumulation.

[0053] Embodiment 2: To solve the problem of retracting the push plate 13 and the rigid chain 38 after the push plate 13 pops out; the following improvements are made in this embodiment on the basis of Embodiment 1: One side of one end of the chain drive wheel 35 is fixedly connected with a first crown gear 29. One end of the first crown gear 29 is drivingly connected with a second crown gear 30. One end of the second crown gear 30 is rotatably connected to the support table 1.

[0054] One end of the second crown gear 30 has a hexagon bolt, and the transmission gear 36 can be driven to rotate by a hexagon wrench to recover the rigid chain 38 and the push plate 13.

[0055] To solve the problem that when the push plates 13 on both sides pop out, it is necessary to control the falling direction of the material when pushing away the hand and the material by adjusting different popping heights to prevent injury; as Figures 1-10 shown, a limit box 24 is fixedly connected below the support table 1. A return rotation shaft 33 is rotatably connected inside the limit box 24. An observation window 51 is opened at one end of the support table 1. One end of the push plate 13 is fixedly connected with a limit belt 34. One end of the limit belt 34 is fixedly connected to the return rotation shaft 33.

[0056] One end of the support table 1 is rotatably connected with a worm 31. One end of the worm 31 is drivingly connected with a worm gear 32. One end of the worm gear 32 is fixedly connected to the return rotation shaft 33.

[0057] The rotation of the worm 31 can drive the rotation of the return shaft 33. The retractable limit belt 34 restricts the height to which the push plate 13 can pop out. At the same time, by setting different pop-out heights for the push plates 13 on both sides, the material can fall to the side with a lower pop-up height after being pushed up, and people can stand on the other side to prevent being injured. At the same time, the self-locking property of the meshing of the worm gear 32 and the worm 31 can be used to prevent the return shaft 33 from being driven to rotate when the push plate 13 pops up.

[0058] Length data can be printed on the limit belt 34. When the return shaft 33 is retracted, the pop-up height of the push plate 13 can be confirmed by observing the length data above through the observation window 51.

[0059] The above is the preferred specific embodiment of the present invention. The protection scope of the present invention is not limited thereto. Any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the technical scope disclosed by the present invention in combination with the prior art or common knowledge, within the spirit and principle of the present invention, should be covered by the protection scope of the present invention.

Claims

1. A table saw with safety protection, comprising a support table (1) with a saw groove (3) in the middle, characterized in that: One end of the support platform (1) is rotatably connected to a swing shaft (14), one end of the swing shaft (14) is fixedly connected to a swing frame (15), one end of the swing frame (15) is fixedly connected to two pulse signal sensors (16), a motor support frame (20), an electromagnet assembly 1 (19) and an electromagnet assembly 2 (48), one end of the motor support frame (20) is slidably connected to a drive motor (17), a power output end of the drive motor (17) is fixedly connected to a saw blade (2), one end of the pulse signal sensor (16) is movably connected to the saw blade (2), and a chain box (25) is fixedly connected to the bottom of the support platform (1). A plurality of chain drive assemblies are rotatably connected inside the chain box (25), one end of the chain drive assembly is drivingly connected to two rigid chains (38), one end of the rigid chain (38) is fixedly connected to a plurality of rubber columns (39), the other end of the rigid chain (38) is fixedly connected to a push plate (13), one end of the chain box (25) is slidably connected to a chain limit rod (26), one end of the chain limit rod (26) is fixedly connected to a second limit rod (28), one end of the second limit rod (28) is slidably connected to one end of the chain drive assembly on one side, and one end of the chain limit rod (26) and the chain box (25) is fixedly connected to a second spring (27).

2. A table saw with safety protection according to claim 1, characterized in that: The chain drive assembly comprises two chain drive wheels (35), two transmission gears (36), an idler wheel (37), a spring five (50) and a positioning groove one (40), one end of the chain drive wheel (35) is fixedly connected to the transmission gear (36), one end of the chain drive wheel (35), the transmission gear (36) and the idler wheel (37) are rotatably connected to the chain box (25), one end of the transmission gear (36) and the chain box (25) is fixedly connected to the spring five (50), one end of the positioning groove one (40) is opened on one side of the transmission gear (36), and one end of the positioning groove one (40) is opened on the transmission gear (36). One end of the moving gear (36) and one end of the limiting rod (28) are slidably connected in the positioning groove (40), and both sides of the idler wheel (37) are meshed with the transmission gear (36); after the limiting rod (28) is separated from the positioning groove (40), the chain driving wheels 35 on both sides rotate under the drive of the spring (50), so that the rigid chains (38) on both sides move inward at the same time; when the two rigid chains (38) move inward and contact, they can bite through the rubber column (39), and the rigid chains (38) move upward to push up the push plate (13).

3. A table saw with safety protection according to claim 2, characterized in that: One end of the driving motor (17) is fixedly connected to a support plate (18), one end of an electromagnet assembly (19) is slidably connected to a motor limit rod (21), one end of the motor limit rod (21) is fixedly connected to a plurality of limit plug rods (23), and one end of the motor limit rod (21) and a motor support frame (20) is fixedly connected to a spring (22).

4. A table saw with safety protection according to claim 3, characterized in that: An air suction port (4) and a saw groove (3) are formed at one end of the support platform (1); an air suction hood (5) is fixedly connected to the lower side of the support platform (1); a filter box (6) is fixedly connected to one end of the air suction hood (5); a dust collector (7) is fixedly connected to one end of the filter box (6); and an exhaust pump (8) is fixedly connected to one end of the dust collector (7).

5. A table saw with safety protection according to claim 4, characterized in that: One end of the swing frame (15) is fixedly connected to a brake support platform (41), one end of the brake support platform (41) is rotatably connected to a brake clamping plate (42), one end of the brake clamping plate (42) is provided with a brake groove (43), one end of the brake clamping plate (42) and the brake support platform (41) are fixedly connected to a spring four (47), and one end of the brake support platform (41) is slidably connected to a locking assembly.

6. A table saw with safety protection according to claim 5, characterized in that: The locking assembly comprises a movable clamping plate (44), a spring three (45), a claw (46) and a positioning groove two (49); one end of the movable clamping plate (44) is slidably connected to the brake support platform (41); one end of the movable clamping plate (44) and the brake support platform (41) is fixedly connected to the spring three (45); one end of the claw (46) is fixedly connected to the movable clamping plate (44); and one end of the brake clamping plate (42) is provided with a positioning groove two (49).

7. A table saw with safety protection according to claim 6, characterized in that: An air blowing pump (9) is fixedly connected to the top of the support platform (1), one end of the air blowing pump (9) is fixedly connected to a paint spraying pipe (10), one end of the paint spraying pipe (10) is slidably connected to a lifting nozzle (11), and one end of the lifting nozzle (11) is rotatably connected to a rotating nozzle (12).

8. A table saw with safety protection according to claim 2, characterized in that: One side of the chain driving wheel (35) at one end is fixedly connected to a crown gear 1 (29), one end of the crown gear 1 (29) is drivingly connected to a crown gear 2 (30), and one end of the crown gear 2 (30) is rotatably connected to the support platform (1).

9. A table saw with safety protection according to claim 8, characterized in that: A limit box (24) is fixedly connected to the bottom of the support platform (1), a rotary shaft (33) is rotatably connected to the interior of the limit box (24), an observation window (51) is provided at one end of the support platform (1), one end of the push plate (13) is fixedly connected to the limit belt (34), and one end of the limit belt (34) is fixedly connected to the rotary shaft (33).

10. A table saw with safety protection according to claim 9, characterized in that: One end of the support platform (1) is rotatably connected to a worm (31), one end of the worm (31) is transmission-connected to a worm wheel (32), and one end of the worm wheel (32) is fixedly connected to a rotary shaft (33).

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