Punching equipment used for watertight door machining and provided with anti-breaking tool bit

Abstract

The invention relates to the technical field of watertight door machining, in particular to a watertight door machining drilling device with an anti-breaking tool bit, which comprises a machine tool, a mounting base is fixedly connected to the bottom end of the inner wall of the machine tool, a matching block is slidably connected to the upper end of the mounting base, and a driving adjusting mechanism is fixedly mounted between the matching block and the machine tool. The matching block is connected with a connecting frame through a driving adjusting mechanism, compressed air is rapidly exhausted, an elastic contraction rod is pushed to be instantly extended, a connecting rod and an abutting block are driven to move upwards, the abutting block is clamped with another conical block, a cutting drill bit rotates reversely, and breakage caused by continuous same-direction rotation is prevented; the rotating direction can be automatically switched at the moment when the drill bit is stuck, stress generated when the drill bit is stuck is effectively released, the drill bit breakage risk is greatly reduced, the service life of a cutter is prolonged, machining safety and efficiency are improved, and the downtime and replacement cost caused by cutter damage are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of watertight door processing, and specifically to a drilling device with a cutter head anti-breaking function for watertight door processing. Background Technique

[0002] In the fields of shipbuilding and ocean engineering, watertight doors are key components to ensure the watertightness of compartments and navigation safety. Their manufacturing materials are mostly high-strength steel or alloys to meet stringent waterproof and compressive requirements. In the drilling process of watertight doors, due to the high hardness and strong toughness of the materials, the processing is difficult, and the drill bits are extremely prone to problems such as jamming, wear, and even breakage, seriously affecting the processing efficiency and product quality. At present, traditional drilling devices have obvious deficiencies in the protection mechanism. When the drill bit encounters abnormalities such as hard particles inside the workpiece or chip blockage and gets jammed, the device cannot perceive and respond in time, and still maintains forward rotation, causing the drill bit to bear excessive torque, which not only exacerbates wear but also easily leads to serious damage such as chipping and breakage. At the same time, existing devices lack effective monitoring of the wear state of the drill bit and cannot take protective measures in time when the tool wear exceeds the limit. Continuing to operate with a severely worn drill bit will not only reduce the drilling accuracy but may also cause the drill bit to break due to sudden changes in cutting force, posing a safety hazard. In addition, even if some devices are equipped with an overload protection function, they can only achieve shutdown operations and cannot release the stress generated when the drill bit is stuck through reverse rotation, making it difficult to fundamentally solve the problem of drill bit damage. Therefore, developing a drilling device that can real-time identify the jamming and wear state of the drill bit and automatically perform reverse rotation protection is of great significance for improving the processing quality of watertight doors, reducing production costs, and ensuring production safety.

[0003] Chinese Patent (Publication No. CN108907734A), this patented technology discloses a drilling method for a drilling device. S1. First, fix the iron plate to be drilled on the fixing plate (3); then connect the protective cover (4) to the fixing plate (3). S2. Then use the drilling device (5) to drill it. S3. Then use the rotating shaft device (10) to connect the protective cover (4) to the base (1). S4. Finally, use the polishing device (2) to polish it.

[0004] According to the above scheme, multiple cutter heads are used for drilling to improve the drilling efficiency. However, during the drilling process, if the cutter head gets stuck by foreign objects, it is easy to break, or if the cutter head wears, it will also cause breakage after a long use time. For this reason, we propose a drilling device with a cutter head anti-breaking function for watertight door processing. Summary of the Invention

[0005] The purpose of the present invention is to provide a drilling device with a cutter head anti-breaking function for watertight door processing to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present invention provides the following technical solutions: A punching device with a knife head anti-breaking function for processing watertight doors, comprising a machine tool. The bottom end of the inner wall of the machine tool is fixedly connected with an installation base. The upper end of the installation base is slidably connected with a matching block. A driving and adjusting mechanism is fixedly installed between the matching block and the machine tool. The matching block is connected with a connecting frame through the driving and adjusting mechanism. An adjusting and steering mechanism is fixedly installed on the outer wall of the connecting frame. The outer wall of the connecting frame is also rotatably connected with a matching frame through a rotating shaft. A triggering protection mechanism is fixedly installed at the bottom of the matching frame. The matching frame is fixedly connected with a cutting drill bit through the triggering protection mechanism.

[0007] Further, as for this solution, the driving and adjusting mechanism includes a gantry. The gantry is slidably connected to the outer wall of the installation base. A first servo motor capable of driving the gantry to move is also fixedly installed at the bottom of the installation base.

[0008] Further, as for this solution, a second servo motor capable of driving the matching block to move is fixedly installed on the outer wall of the gantry. A slider is slidably connected to the outer wall of the matching block. A third servo motor capable of driving the slider to move up and down is also fixedly installed on the outer wall of the matching block.

[0009] Further, as for this solution, the adjusting and steering mechanism includes a fourth servo motor. The fourth servo motor is fixedly installed on the outer wall of the connecting frame. The output end of the fourth servo motor is fixedly connected with a first bevel gear.

[0010] Further, as for this solution, two tapered blocks are rotatably connected to the outer wall of the connecting frame. Matching grooves are formed inside both of the two tapered blocks. Two second bevel gears capable of driving the tapered blocks to rotate are rotatably connected to the outer wall of the connecting frame. Each of the second bevel gears meshes with the first bevel gear.

[0011] Further, as for this solution, an abutting block is clamped inside the inner wall of one of the matching grooves. The upper end of the abutting block is fixedly connected with an electric telescopic arm. The upper end of the electric telescopic arm abuts against the inner wall of the other matching groove.

[0012] Further, as for this solution, the triggering protection mechanism includes an air box. The air box is rotatably connected to the bottom of the matching frame. A rotating circular plate is rotatably connected to the bottom of the air box. The outer wall of the air box is fixedly connected with a transmission circular block through a plurality of connecting arms. A fixed pipe is fixedly connected inside the transmission circular block. Movable pipes with a reset function are slidably sleeved on both the upper and lower ends of the fixed pipe. A pressure sensor is fixedly installed inside each of the movable pipes.

[0013] As a further aspect of this solution, a mating circular plate is fixedly connected to one end of each of the movable pipes away from the fixed pipe. A telescopic circular pipe is fixedly connected to the bottom of the mating circular plate located below the fixed pipe. The bottom of the telescopic circular pipe is fixedly connected to the cutting drill bit. The rotating circular plate is communicated with the nearest mating circular plate through a plurality of flexible hoses. The two mating circular plates are fixedly connected by a plurality of steel ropes. The outer wall of each steel rope slidably penetrates inside the driving circular block.

[0014] As a further aspect of this solution, a corrugated sleeve is rotatably connected between each of the mating circular plates and the driving circular block. The bottom end of the inner wall of the movable pipe located below the fixed pipe is fixedly connected to an elastic telescopic rod. The upper end of the air box is fixedly communicated with an elastic contraction rod. The upper end of the elastic contraction rod is fixedly connected to a connecting rod. The upper end of the connecting rod is fixedly connected to the bottom of the abutting block.

[0015] As a further aspect of this solution, an air discharge pipe is also fixedly communicated with the upper end of the air box. A plurality of air ports are provided on the outer wall of the air discharge pipe. An abutting cylinder is slidably connected to the inner wall of the air discharge pipe. The bottom of the abutting cylinder is fixedly connected to the elastic telescopic rod. A micro hydraulic shock absorber is fixedly connected between the upper end of the abutting cylinder and the top end of the inner wall of the air discharge pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the present invention is in use, when the cutting drill bit gets stuck in the hole of the watertight door, the continuous rotation of the driving circular block will pull the steel rope, causing the mating circular plates to move towards each other and squeeze the movable pipes. The pressure sensor triggers the rapid contraction of the electric telescopic arm, driving the elastic telescopic rod to move upward and squeeze the micro hydraulic shock absorber. When the abutting cylinder disengages from the air port, the compressed gas is quickly discharged, pushing the elastic contraction rod to instantly extend, driving the connecting rod and the abutting block to move upward, so that the abutting block is engaged with another conical block, causing the cutting drill bit to rotate in the reverse direction, preventing breakage caused by continuous rotation in the same direction. Through the linkage of the mechanical structure and the hydraulic system, the rotation direction can be automatically switched instantly when the drill bit gets stuck, effectively releasing the stress when the drill bit is stuck, greatly reducing the risk of drill bit breakage, extending the service life of the tool, improving the processing safety and efficiency, and reducing the downtime and replacement cost caused by tool damage; 2. When the present invention is in use, when the cutting drill bit is severely worn, when the two mating circular plates contract, when the abutting cylinder disengages from the abutment with the outer wall of the air port, the abutting block will disengage from the inner wall of one corresponding mating groove and abut against the inner wall of another mating groove. Moreover, the retractable air rod will also drive the connecting frame to move upward, and the cutting drill bit will disengage from the direct abutment with the watertight door. The wear degree of the drill bit can be detected through the detection of pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of a punching device with an anti-breaking cutter head for processing watertight doors.

[0018] Figure 2 Top view of the mounting base in a punching device with a knife head anti-breaking function for watertight door processing.

[0019] Figure 3 Schematic position structure diagram of the slider in a punching device with a knife head anti-breaking function for watertight door processing.

[0020] Figure 4 Schematic structure diagram of the steering adjustment mechanism in a punching device with a knife head anti-breaking function for watertight door processing.

[0021] Figure 5 Side view of the steering adjustment mechanism in a punching device with a knife head anti-breaking function for watertight door processing.

[0022] Figure 6 Schematic structure diagram of the trigger protection mechanism in a punching device with a knife head anti-breaking function for watertight door processing.

[0023] Figure 7 Schematic internal structure diagram of the elastic contraction rod in a punching device with a knife head anti-breaking function for watertight door processing.

[0024] Figure 8 Schematic position structure diagram of the mating frame in a punching device with a knife head anti-breaking function for watertight door processing.

[0025] Figure 9 Schematic position structure diagram of the cutting drill bit in a punching device with a knife head anti-breaking function for watertight door processing.

[0026] Figure 10 Schematic position structure diagram of the mating circular plate in a punching device with a knife head anti-breaking function for watertight door processing.

[0027] Figure 11 Schematic position structure diagram of the moving pipe in a punching device with a knife head anti-breaking function for watertight door processing.

[0028] Figure 12 Schematic position structure diagram of the rotating air ring in a punching device with a knife head anti-breaking function for watertight door processing.

[0029] In the figure: 1. Machine tool; 2. Sliding door; 3. Mounting base; 4. First servo motor; 5. First slide bar; 6. First threaded rod; 7. Gantry; 8. Second slide bar; 9. Second threaded rod; 10. Second servo motor; 11. Third servo motor; 12. Third threaded rod. 13. Third sliding rod; 14. Slide block; 15. Contracting air rod; 16. Fourth servo motor; 17. Connecting frame; 18. Fitting frame; 19. Cutting drill bit; 20. Rotating air ring; 21. First bevel gear; 22. Transmission belt; 23. First pulley; 24. Tapered block; 25. Abutting block; 26. Air box; 27. Connecting arm; 28. Driving round block; 29. Connecting rod; 30. Elastic contraction rod; 31. Second bevel gear; 32. Electric telescopic arm; 33. Fitting round plate; 34. Corrugated sleeve; 36. Telescopic round tube; 37. Elastic telescopic rod; 38. Air discharge pipe; 39. Abutting cylinder; 40. Air port; 41. Rotating round plate; 42. Steel wire rope; 43. Fixed tube; 44. Moving tube; 45. Fitting block; 46. Second pulley; 101. Driving and adjusting mechanism; 201. Adjusting and steering mechanism; 301. Trigger protection mechanism. Specific implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0031] Please refer to Figures 1 to 4 As shown, in the embodiment of the present invention, a punching device with a knife head anti-breaking function for the processing of watertight doors includes a machine tool 1. The bottom end of the inner wall of the machine tool 1 is fixedly connected with an installation base 3. The upper end of the installation base 3 is slidably connected with a fitting block 45. A driving and adjusting mechanism 101 is fixedly installed between the fitting block 45 and the machine tool 1. The fitting block 45 is connected with a connecting frame 17 through the driving and adjusting mechanism 101. An adjusting and steering mechanism 201 is fixedly installed on the outer wall of the connecting frame 17. The outer wall of the connecting frame 17 is also rotatably connected with a fitting frame 18 through a rotating shaft. A trigger protection mechanism 301 is fixedly installed at the bottom of the fitting frame 18. The fitting frame 18 is fixedly connected with a cutting drill bit 19 through the trigger protection mechanism 301. Two sliding doors 2 are slidably connected to the outer wall of the machine tool 1, and the two sliding doors 2 are symmetrically distributed left and right on the outer wall of the machine tool 1. Embodiment

[0032] Please refer to Figure 2As shown in the figure, the driving and adjusting mechanism 101 includes a gantry 7. The gantry 7 is slidably connected to the outer wall of the mounting base 3. A first servo motor 4 capable of driving the gantry 7 to move is fixedly installed at the bottom of the mounting base 3. Specifically, the output end of the first servo motor 4 is fixedly connected to a first threaded rod 6. The outer wall of the first threaded rod 6 is threadedly connected to the inside of the gantry 7. Two first sliding rods 5 are also fixedly connected to the bottom of the mounting base 3. The gantry 7 is slidably connected to the outer walls of the two first sliding rods 5. A second servo motor 10 capable of driving the mating block 45 to move is fixedly installed on the outer wall of the gantry 7. Specifically, the output end of the second servo motor 10 is fixedly connected to a second threaded rod 9. The outer wall of the second threaded rod 9 is threadedly connected to the inside of the mating block 45. Two second sliding rods 8 are fixedly connected to one end of the gantry 7 close to the second servo motor 10. The two second sliding rods 8 are symmetrically distributed up and down on the outer wall of the gantry 7. The mating block 45 is slidably connected to the outer walls of the two second sliding rods 8; A slider 14 is slidably connected to the outer wall of the mating block 45. A third servo motor 11 capable of driving the slider 14 to move up and down is also fixedly installed on the outer wall of the mating block 45. Specifically, the output end of the third servo motor 11 is fixedly connected to a third threaded rod 12. The outer wall of the third threaded rod 12 is threadedly connected to the inside of the slider 14. Two third sliding rods 13 are also fixedly connected to the outer wall of the mating block 45. The slider 14 is slidably connected to the outer walls of the two third sliding rods 13; Please refer to Figures 3 to 5 As shown in the figure, the steering adjustment mechanism 201 includes a fourth servo motor 16. The fourth servo motor 16 is fixedly installed on the outer wall of the connecting frame 17. The output end of the fourth servo motor 16 is fixedly connected to a first bevel gear 21. Two tapered blocks 24 are also rotatably connected to the outer wall of the connecting frame 17 through a rotating shaft. The two tapered blocks 24 are symmetrically distributed up and down on the outer wall of the connecting frame 17. A mating groove is formed inside each of the two tapered blocks 24, and the inner wall of the mating groove is conical. Two second bevel gears 31 capable of driving the tapered blocks 24 to rotate are also rotatably connected to the outer wall of the connecting frame 17 through a rotating shaft. The two second bevel gears 31 are also symmetrically distributed up and down on the outer wall of the connecting frame 17. Specifically, second belt pulleys 46 are fixedly connected to opposite ends of the two second bevel gears 31, and first belt pulleys 23 are fixedly connected to opposite ends of the two tapered blocks 24. A transmission belt 22 is tensioned and sleeved between each second belt pulley 46 and the corresponding first belt pulley 23. Two tensioners are fixedly installed on the outer wall of the connecting frame 17. The abutting wheel of each tensioner abuts against the outer wall of the corresponding transmission belt 22. The tension degree of the transmission belt 22 can be adjusted through the tensioner, and the tensioner is a prior art and will not be elaborated here. The tensioner is not shown in the figure; Each second bevel gear 31 meshes with the first bevel gear 21. A butting block 25 is clamped on the inner wall of one of the mating grooves. A plurality of engaging teeth are fixedly connected between the outer wall of the butting block 25 and the inner walls of all the mating grooves. The engaging teeth can enhance the friction force between the butting block 25 and the inner wall of the mating groove. The upper end of the butting block 25 is fixedly connected with an electric telescopic arm 32, and the upper end of the electric telescopic arm 32 abuts against the inner wall of another mating groove; Please refer to Figure 3 , Figures 6 to 12 As shown, the trigger protection mechanism 301 includes an air box 26. The air box 26 is rotatably connected to the bottom of the mating frame 18. A rotating circular plate 41 is rotatably connected to the bottom of the air box 26 through a rotating shaft. A driving circular block 28 is fixedly connected to the outer wall of the air box 26 through a plurality of connecting arms 27. The plurality of connecting arms 27 are circumferentially distributed between the air box 26 and the driving circular block 28. A fixed pipe 43 is fixedly connected to the inside of the driving circular block 28. A moving pipe 44 with a reset function is slidably sleeved on both the upper and lower ends of the fixed pipe 43. A pressure sensor is fixedly installed inside each moving pipe 44. A first spring is fixedly connected between each moving pipe 44 and the fixed pipe 43. The first spring is made of high-strength spring steel. One end of each moving pipe 44 away from the fixed pipe 43 is fixedly connected with a mating circular plate 33. A telescopic circular pipe 36 is fixedly connected to the bottom of the mating circular plate 33 located below the fixed pipe 43. The bottom of the telescopic circular pipe 36 is fixedly connected to the cutting drill bit 19. When the two moving pipes 44 are squeezed to pressurize the telescopic circular pipe 36 and the cutting drill bit 19, during the extrusion drilling operation on the watertight door, since the first spring is made of high-strength spring steel, its compressive strength is sufficient to firmly support the pressure borne by the second threaded rod 9 during the drilling process, thereby providing a reliable support guarantee for the drilling operation. The rotating circular plate 41 is communicated with the nearest mating circular plate 33 through a plurality of hoses. A plurality of steel ropes 42 are fixedly connected between the two mating circular plates 33. At this time, all the steel ropes 42 are in a taut state. The plurality of steel ropes 42 are circumferentially distributed between the two mating circular plates 33. The outer wall of each steel rope 42 slidably penetrates through the inside of the driving circular block 28. The steel rope 42 is made of carbon steel. The carbon steel material has the characteristics of high strength, good toughness, low cost, corrosion resistance and high temperature resistance, and is durable. A corrugated sleeve 34 is rotatably connected between each mating circular plate 33 and the driving circular block 28. The corrugated sleeve 34 is made of rubber. The rubber material has good corrosion resistance and high temperature resistance. An elastic telescopic rod 37 is fixedly connected to the bottom end of the inner wall of the moving pipe 44 located below the fixed pipe 43. The outer wall of the elastic telescopic rod 37 penetrates through the inside of the air box 26. The upper end of the air box 26 is fixedly communicated with an elastic contraction rod 30. The upper end of the elastic contraction rod 30 is fixedly connected with a connecting rod 29; The upper end of the connecting rod 29 is fixedly connected to the bottom of the abutting block 25. The outer wall of the connecting rod 29 is slidably inserted through one of the tapered blocks 24 inside the first pulley 23 (specifically, the connecting rod 29 is inserted through the inside of the lower tapered block 24). The upper end of the air box 26 is also fixedly communicated with an air discharge pipe 38. The air discharge pipe 38 is located inside the elastic contraction rod 30. A plurality of air ports 40 are formed in the outer wall of the air discharge pipe 38. The plurality of air ports 40 are circumferentially distributed on the outer wall of the air discharge pipe 38. Abutting cylinder 39 is slidably connected to the inner wall of the air discharge pipe 38, and the bottom of the abutting cylinder 39 is fixedly connected to the elastic telescopic rod 37. A micro hydraulic shock absorber is fixedly connected between the upper end of the abutting cylinder 39 and the top end of the inner wall of the air discharge pipe 38 (its model is ACE shock absorber SC190 in the United States, and the micro hydraulic shock absorber can delay the reset speed of the abutting cylinder 39); The outer wall of the elastic contraction rod 30 is fixedly communicated with a rotating air ring 20. Specifically, a plurality of circular openings are formed in the outer wall of the elastic contraction rod 30, and the circular openings are communicated with the inside of the rotating air ring 20 (refer to Figure 12 ). A contraction air rod 15 is fixedly connected between the slider 14 and the connecting frame 17. The contraction air rod 15 is fixedly communicated with the rotating air ring 20 through a rubber tube. When the inside of the elastic contraction rod 30 is filled with high-pressure gas and then enters the inside of the contraction air rod 15 through the rubber tube, the contraction air rod 15 extends to drive the connecting frame 17 to move upward, and the connecting frame 17 will drive the cutting drill bit 19 to move upward, so that the cutting drill bit 19 will quickly disengage from the clamping with the inner wall of the watertight door hole.

[0033] The working principle of the present invention is: When the present invention is used, the door panel of the watertight door is placed on the upper end of the installation base 3. The first servo motor 4 is started to drive the first threaded rod 6 to rotate. The first threaded rod 6 will drive the gantry 7 to move back and forth along the outer wall of the first slide rod 5, so as to adjust the position movement of the cutting drill bit 19. Then, the second servo motor 10 drives the second threaded rod 9 to drive the matching block 45 to move. The matching block 45 will drive the cutting drill bit 19 to adjust the direction. Then, the third servo motor 11 drives the third threaded rod 12 to rotate. The third threaded rod 12 drives the slider 14 to move up and down, so as to adjust the up and down position movement of the cutting drill bit 19; Start the fourth servo motor 16 to drive the first bevel gear 21 to rotate. The first bevel gear 21 drives two second bevel gears 31 to rotate. Each second bevel gear 31 drives the first pulley 23 to rotate through the corresponding second pulley 46 and the transmission belt 22. The two first pulleys 23 drive the conical blocks 24 to rotate. At this time, the two conical blocks 24 are rotating in two opposite directions. At this time, the abutting blocks 25 are clamped in the inner walls of the corresponding mating grooves. The conical blocks 24 drive the abutting blocks 25 to rotate through the mating grooves. The abutting blocks 25 rotate on the corresponding conical blocks 24. The abutting blocks 25 drive the elastic contraction rods 30 to rotate through the connecting rods 29. The elastic contraction rods 30 drive the transmission circular blocks 28 to rotate through the air boxes 26 and the connecting arms 27. The transmission circular blocks 28 drive all the mating circular plates 33 to rotate through the steel ropes 42. The mating circular plates 33 drive the cutting drill bits 19 to rotate through the telescopic circular tubes 36. The third servo motor 11 drives the third threaded rod 12 to rotate. The slider 14 moves downward along the outer wall of the third threaded rod 12. When the cutting drill bit 19 rotates and abuts against the outer wall of the watertight door, the slider 14 will descend. The slider 14 presses down on the mating frame 18 through the connecting frame 17. The mating frame 18 presses down on the transmission circular block 28 through the connecting arm 27. The transmission circular block 28 presses on the cutting drill bit 19 through the moving tube 44 and the first spring. The first spring inside the moving tube 44 is compressed, but the elastic coefficient of the first spring is greater than the extrusion force received by the cutting drill bit 19. The cutting drill bit 19 will be pushed. At this time, according to the above, the abutting block 25 will be pushed upward. At this time, the electric telescopic arm 32 abuts against the abutting block 25 to prevent the abutting block 25 from disengaging from the inner wall of the corresponding mating groove; When the cutting drill bit 19 gets stuck and the resistance in the watertight door hole becomes larger, the driving circular block 28 will continue to rotate. The driving circular block 28 will pull all the steel ropes 42. The steel ropes 42 will pull the two mating circular plates 33. The two mating circular plates 33 will move closer to each other in opposite directions. At this time, the telescopic circular tube 36 extends and cannot rotate. The mating circular plates 33 will squeeze all the moving tubes 44. The pressure sensor inside the moving tube 44 will be triggered to cause the electric telescopic arm 32 to quickly contract and reset. Note that at this time, the third servo motor 11 will stop driving the third threaded rod 12 to rotate, so that the slider 14 will stop driving the cutting drill bit 19 to move downward. When the moving tube 44 below the fixed tube 43 contracts towards the outer wall of the fixed tube 43, it will drive the elastic telescopic rod 37 to move upward. When the elastic telescopic rod 37 moves, it will drive the abutting cylinder 39 to move upward. At this time, the abutting cylinder 39 will squeeze the micro hydraulic shock absorber. The elastic telescopic rod 37 quickly squeezes the micro hydraulic shock absorber, and the micro hydraulic shock absorber will quickly contract. At this time, the abutting cylinder 39 has not completely disengaged from the outer wall of the air port 40, and all the corrugated sleeves 34 squeeze the internal gas and are in a compressed state, and the gas pressure becomes larger. When the abutting cylinder 39 disengages from the outer wall of the air port 40, the gas will be discharged from the air port 40 through the air box 26 and the air discharge pipe 38. At this time, the elastic contraction rod 30 will instantly extend to drive the connecting rod 29 to move upward. The connecting rod 29 drives the abutting block 25 to move upward. The abutting block 25 will be clamped with the inner wall of the mating groove inside another tapered block 24. At this time, the cutting drill bit 19 rotates in the opposite direction to prevent the cutting drill bit 19 from rotating in the same direction when it is stuck and causing fracture; When the abutting block 25 rotates in the opposite direction, the driving circular block 28 will rotate in the opposite direction at this time. The driving circular block 28 will release the tension on all the steel ropes 42. The pressure sensor inside the moving tube 44 triggers the electric telescopic arm 32 to quickly extend, so that the abutting block 25 abuts against the inner wall of the bottom mating groove. The mating circular plates 33 will reset under the action of the first spring. At this time, the mating circular plates 33 will drive the elastic telescopic rod 37 to reset. When the elastic telescopic rod 37 resets, it will pull the micro hydraulic shock absorber through the abutting cylinder 39. The characteristic of the micro hydraulic shock absorber is that it quickly contracts and resets slowly. The elastic contraction rod 30 and the inner part of the contraction air rod 15 lose the support of high-pressure gas and will reset and contract. The micro hydraulic shock absorber will provide enough time for the gas to quickly return to the inside of all the corrugated sleeves 34. After the abutting cylinder 39 is reset under the action of the contraction of the elastic telescopic rod 37, the next drilling operation can be carried out; Another situation is that when the cutting drill bit 19 is severely worn, according to the above working principle, when the cutting drill bit 19 moves downward at the same speed, when the cutting drill bit 19 is not worn and is very sharp, all the moving tubes 44 are in an unshrunk state. When the cutting drill bit 19 is severely worn and the staff fails to detect it in time, when the cutting drill bit 19 rotates and abuts against the outer wall of the watertight door to drill a hole at the same speed, the drilling friction resistance received by the cutting drill bit 19 at this time becomes larger, and the transmission round block 28 will gradually increase the pulling force on the steel rope 42. According to the above, when the two mating round plates 33 shrink, when the abutting cylinder 39 disengages from the abutment with the outer wall of the air port 40, the abutting block 25 will disengage from the inner wall of one corresponding mating groove and abut against the inner wall of the other mating groove, and the shrinking air rod 15 will also drive the connecting frame 17 to move upward, and the cutting drill bit 19 will disengage from the direct abutment with the watertight door.

[0034] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A punching device with a knife head anti-breaking function for processing watertight doors, comprising a machine tool (1), characterized in that, At the bottom end of the inner wall of the machine tool (1), there is a fixedly connected mounting base (3). A mating block (45) is slidably connected to the upper end of the mounting base (3). A drive adjustment mechanism (101) is fixedly installed between the mating block (45) and the machine tool (1). The mating block (45) is connected to a connecting frame (17) through the drive adjustment mechanism (101). An adjustment steering mechanism (201) is fixedly installed on the outer wall of the connecting frame (17). The outer wall of the connecting frame (17) is also rotatably connected to a mating frame (18) through a rotating shaft. A trigger protection mechanism (301) is fixedly installed at the bottom of the mating frame (18). The mating frame (18) is fixedly connected to a cutting drill bit (19) through the trigger protection mechanism (301).

2. A punching device with a knife head anti-breaking function for processing a watertight door according to claim 1, characterized in that, The drive adjustment mechanism (101) includes a gantry (7). The gantry (7) is slidably connected to the outer wall of the mounting base (3). A first servo motor (4) capable of driving the gantry (7) to move is also fixedly installed at the bottom of the mounting base (3).

3. The punching device with a knife head anti-breaking function for processing a watertight door according to claim 2, wherein, A second servo motor (10) capable of driving the mating block (45) to move is fixedly installed on the outer wall of the gantry (7). A slider (14) is slidably connected to the outer wall of the mating block (45). A third servo motor (11) capable of driving the slider (14) to move up and down is also fixedly installed on the outer wall of the mating block (45).

4. A punching device with a knife head anti-breaking function for processing watertight doors according to claim 1, characterized in that, The adjustment steering mechanism (201) includes a fourth servo motor (16). The fourth servo motor (16) is fixedly installed on the outer wall of the connecting frame (17). The output end of the fourth servo motor (16) is fixedly connected to a first bevel gear (21).

5. A punching device with a knife head anti-breaking function for processing watertight doors according to claim 4, characterized in that, Two tapered blocks (24) are rotatably connected to the outer wall of the connecting frame (17). A mating groove is formed inside each of the two tapered blocks (24). Two second bevel gears (31) capable of driving the tapered blocks (24) to rotate are rotatably connected to the outer wall of the connecting frame (17). Each of the second bevel gears (31) meshes with the first bevel gear (21).

6. A punching device with a knife head anti-breaking function for processing a watertight door according to claim 5, wherein, A butting block (25) is clamped to the inner wall of one of the mating grooves. The upper end of the butting block (25) is fixedly connected to an electric telescopic arm (32). The upper end of the electric telescopic arm (32) abuts against the inner wall of the other mating groove.

7. A punching device with a knife head anti-breaking function for processing watertight doors according to claim 1, characterized in that, The trigger protection mechanism (301) includes an air box (26). The air box (26) is rotatably connected to the bottom of the mating frame (18). A rotating circular plate (41) is rotatably connected to the bottom of the air box (26). The outer wall of the air box (26) is fixedly connected to a transmission circular block (28) through a plurality of connecting arms (27). A fixed tube (43) is fixedly connected inside the transmission circular block (28). Movable tubes (44) with a reset function are slidably sleeved on both the upper and lower ends of the fixed tube (43). A pressure sensor is fixedly installed inside each of the movable tubes (44).

8. A punching device with a knife head anti-breaking function for processing watertight doors according to claim 7, characterized in that, One end of each of the moving tubes (44) away from the fixed tube (43) is fixedly connected with a matching circular plate (33). The bottom of the matching circular plate (33) located below the fixed tube (43) is fixedly connected with a telescopic circular tube (36). The bottom of the telescopic circular tube (36) is fixedly connected with a cutting drill bit (19). The rotating circular plate (41) is communicated with the nearest matching circular plate (33) through a plurality of hoses. The two matching circular plates (33) are fixedly connected through a plurality of steel ropes (42). The outer wall of each steel rope (42) slidably penetrates through the inside of the transmission circular block (28).

9. A punching device with a knife head anti-breaking function for processing watertight doors according to claim 8, characterized in that, A corrugated sleeve (34) is rotatably connected between each of the matching circular plates (33) and the transmission circular block (28). The bottom end of the inner wall of the moving tube (44) located below the fixed tube (43) is fixedly connected with an elastic telescopic rod (37). The upper end of the air box (26) is fixedly communicated with an elastic contraction rod (30). The upper end of the elastic contraction rod (30) is fixedly connected with a connecting rod (29). The upper end of the connecting rod (29) is fixedly connected with the bottom of the abutting block (25).

10. A punching device with a knife head anti-breaking function for processing watertight doors according to claim 9, characterized in that, The upper end of the air box (26) is also fixedly communicated with an air discharge pipe (38). A plurality of air ports (40) are formed in the outer wall of the air discharge pipe (38). An abutting cylinder (39) is slidably connected to the inner wall of the air discharge pipe (38). The bottom of the abutting cylinder (39) is fixedly connected with the elastic telescopic rod (37). A micro hydraulic shock absorber is fixedly connected between the upper end of the abutting cylinder (39) and the top end of the inner wall of the air discharge pipe (38).

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