A quick muffler exhaust pipe punching device

Abstract

The application discloses a kind of quick silencer exhaust pipe punching equipment, including the connecting column of being spliced by multiple spliced tiles, each spliced tile is spliced into connecting column and forms the working cavity of both ends opening inside, a hollow shaft pipe is arranged in the working cavity, both sides shaft pipe cavity are all arranged a sealing piston, both sides openings of shaft pipe cavity are sealed by two sealing pistons, and make that shaft pipe cavity inside forms a closed liquid storage cavity, the both sides of connecting column are each provided with rotary driving part, and each spliced tile is opened by rotary driving part and drives shaft pipe rotation;The application utilizes a connecting column that can expand and shrink, from inside to outside punching from silencer exhaust pipe, overall small and exquisite, can realize a type of rotary punching, more quickly, and has self-positioning capability, simplify overall structure, utilize positioning point to complete punching, there is no position deviation, positioning and punching are integrated, efficiency is greatly improved, and structure design is more reasonable.

Description

Technical Field

[0001] This invention relates to the field of muffler exhaust pipe processing, and specifically to a quick muffler exhaust pipe drilling device. Background Technology

[0002] The exhaust muffler used in automobiles and motorcycles works by using a microporous plate sound-absorbing structure. When the engine produces and discharges high-pressure, high-temperature steam, it enters the inner cavity of the microporous plate muffler through small holes, where it is depressurized and expanded. This forms low-pressure steam that is then ejected from the small holes. Finally, the remaining sound is further reduced by the mouthpiece cover, thus achieving the purpose of noise reduction.

[0003] The exhaust pipe muffler has many small holes on its round tube. Traditionally, these holes are drilled using an electric drilling machine, which can only drill one hole at a time. An automatic rotary feed system, controlled by a PLC, is installed at the end of the tube. However, this method has the following drawbacks:

[0004] 1. Due to the large number of holes to be drilled, each drilling method requires a significant amount of time, resulting in generally low work efficiency;

[0005] 2. Because the muffler exhaust pipe is a hollow tube, the entire hollow body needs to be clamped to complete the positioning when drilling. In order to prevent displacement and vibration during drilling, this method often requires a large clamping force, which may cause the two ends of the hollow tube to be deformed, affecting the quality of the exhaust pipe.

[0006] 3. Because the outer wall of the pipe is an arc surface, it is difficult to position the drill bit between the pipe surface when drilling, which increases the difficulty of drilling or causes the drilling position to shift, resulting in poor positioning effect.

[0007] 4. Because the holes are drilled from the outside in, a lot of iron filings will enter the pipe. During later cleaning, a large amount of iron filings will fall onto the workbench, making cleaning inconvenient.

[0008] 5. Because drilling from the outside in, the rapidly rotating drill bit is exposed, and the flying iron filings can lead to accidents, making it highly dangerous. Summary of the Invention

[0009] To address the aforementioned problems, this invention provides a quick muffler exhaust pipe drilling device. It utilizes an extrusion method to complete positioning from inside the exhaust pipe and performs drilling at the positioning point, making the drilling process more precise. This effectively eliminates the need for clamping structures and prevents deformation of the hollow exhaust pipe caused by rushed positioning, thus effectively solving many shortcomings in the prior art.

[0010] This invention is achieved through the following technical solution: a quick-drilling device for a muffler exhaust pipe, comprising a connecting column composed of multiple spliced ​​tiles. After the spliced ​​tiles are assembled into the connecting column, a working cavity with openings at both ends is formed inside. A hollow shaft tube is installed inside the working cavity, forming a shaft tube cavity with openings at both ends. A sealing piston is installed in each of the two shaft tube cavities, and the two sealing pistons seal the openings on both sides of the shaft tube cavity, thereby forming a closed liquid storage cavity inside the shaft tube cavity. A rotary drive component is installed on each side of the connecting column, which opens each spliced ​​tile and drives the shaft tube to rotate.

[0011] A bearing is installed on each side of the working cavity, and the shaft tube is installed in the shaft hole of the bearing on both sides. A tension rod is provided on the outer ring of the bearing for each spliced ​​bearing. The bearing and each spliced ​​bearing are elastically connected through the tension rod.

[0012] It also includes a drilling mechanism, which is set in a guide sleeve inside the shaft cavity. Each splicing tile is provided with an elastic support sleeve corresponding to the position of each drilling mechanism. When each splicing tile is opened, the elastic support sleeve contacts and presses against the inner wall of the muffler exhaust pipe.

[0013] As a preferred technical solution, each side of the splicing tile has a first inclined contact surface, and a horn-shaped extrusion cavity is formed between each first inclined contact surface. A second inclined contact surface is provided on the rotary drive member at the position corresponding to the first inclined contact surface. The end of the rotary drive member with the second inclined contact surface is inserted into the extrusion cavity, so that the second inclined contact surface and the first inclined contact surface are pressed into contact.

[0014] As a preferred technical solution, the rotary drive component includes a drive shaft, a second inclined contact surface is disposed on one side of the drive shaft, the other end of the drive shaft is connected to a cylinder, a hydraulic cylinder or an electric push rod, the drive shaft has a built-in rotary motor, a connecting block is fixedly installed at the output end of the motor shaft of the rotary motor, a positioning rod is provided at the other end of the connecting block, a positioning shaft hole is provided at the outer end of the sealing piston facing the axial direction of the positioning rod, the push rod is positioned and installed into the positioning shaft hole, and the drive motor drives the connecting block and the positioning rod to rotate.

[0015] As a preferred technical solution, both the positioning rod and the positioning shaft hole have square cross-sectional shapes.

[0016] As a preferred technical solution, a limiting ring is provided on the inner wall of the shaft cavity on the side of the sealing piston away from the rotary drive component. A first spring is installed between the limiting ring and the sealing piston. One end of the first spring is fixedly connected to the limiting ring, and the other end is fixedly connected to the end face of the sealing piston. A slider is provided on one side of the sealing piston. A groove is provided on the inner wall of the shaft cavity corresponding to the position of the slider. The groove extends along the axial direction of the shaft cavity. The outer wall surface of the sealing piston and the outer wall surface of the slider are both covered with a rubber sealing layer.

[0017] As a preferred technical solution, the drilling mechanism is arranged in a straight line in the guide sleeves inside the shaft tube cavity. Each guide sleeve has a liquid inlet chamber. The drilling mechanism includes a drilling motor and a drilling bit. The outer wall of the drilling motor is covered with a rubber sealing layer. The cross-sectional shape of the drilling motor is the same as that of the liquid inlet chamber. The drilling motor is sealed in the liquid inlet chamber by the rubber sealing layer. A second spring is installed in the space at the top of the drilling motor. The second spring pushes the drilling motor out and close to the bottom opening of the liquid inlet chamber. When the sealing pistons on both sides of the shaft tube squeeze inward, the liquid in the storage chamber enters the bottom liquid inlet chamber of each guide sleeve and pushes the drilling motor, causing the second spring to compress elastically.

[0018] As a preferred technical solution, the drilling bit passes through the drill hole opened on the shaft tube and extends into the elastic support sleeve. When the sealing piston pushes inward, the drilling bit passes through the drill hole and the elastic support sleeve and extends to the outside, then contacts the inner wall of the muffler exhaust pipe to make a hole.

[0019] As a preferred technical solution, the elastic support sleeve includes a fixed sleeve and a movable sleeve. The movable sleeve is telescopically inserted into the fixed sleeve, and a third spring is fixedly connected to the bottom of its insertion end. The other end of the third spring is fixedly connected to the stepped surface provided in the fixed sleeve. The movable sleeve is pushed outward by the third spring. Both the movable sleeve and the fixed sleeve are provided with a drilling channel for the drill bit to pass through. A contact rubber ring is provided on the outer end face of the movable sleeve.

[0020] As a preferred technical solution, one end of the tension rod is fixedly welded to the outer wall of the bearing, and the other end is inserted into the tension hole starting from the inner wall of the splicing tile. A fourth spring is fixedly welded into each tension hole, and the other end of the fourth spring is fixedly welded to the end face of the tension rod.

[0021] As a preferred technical solution, an electrical control box is also provided on the outside of the splicing tile, which is connected to each drilling motor and rotary motor, and provides power and control switches for the drilling motor and rotary motor.

[0022] The beneficial effects of this invention are as follows: First, this invention utilizes a rod-shaped structure, which is inserted into the hollow muffler exhaust pipe and positioned by internal compression. Utilizing an elastic support sleeve, it not only completes positioning from the inside out, but also locks the drilling position at the positioned location, that is, positioning and drilling are at the same point, achieving more precise positioning and drilling. The drilling point is determined after the initial clamping is completed, and there will be no positional deviation during drilling, making it more accurate.

[0023] II. This invention utilizes connecting columns composed of expandable and contractible spliced ​​tiles. When drilling, applying pressure to both sides completes the positioning and drilling. Releasing the pressure drives each drilling mechanism to rotate, changing the drilling position. The entire drilling process is a linear, concentrated drilling method. Drilling is completed after one rotation, greatly improving efficiency. The overall structure is simple, requiring no large and complex mechanical structures, reducing costs, and the structural design is more reasonable.

[0024] Third, because the present invention drills from the inside out, the entire processing is safer, the drill bit is not exposed, iron filings will not fly, and it is convenient for later cleaning.

[0025] Fourth, since the present invention uses an elastic support sleeve as a positioning support, the positioning method of the elastic support sleeve eliminates the traditional clamping positioning method, effectively prevents the hollow exhaust pipe from deforming, increases the quality of the product after processing, reduces the defect rate, and combines positioning with drilling to solve the problem of space occupation caused by clamping the drilling point. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the present invention during drilling;

[0028] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 3 This is a cross-sectional schematic diagram of the present invention during drilling;

[0030] Figure 4 For the present invention Figure 3 A magnified view of a section at point A in the middle;

[0031] Figure 5 For the present invention Figure 3 A magnified view of a section at point B in the middle;

[0032] Figure 6 This is a schematic diagram of one end face of the present invention;

[0033] Figure 7 This is a three-dimensional cross-sectional schematic diagram of the present invention;

[0034] Figure 8 For the present invention Figure 7 A magnified view of a section at point C;

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Rotary drive component; 2. Splicing tile; 3. Muffler exhaust pipe; 4. Movable sleeve; 5. Fixed sleeve; 6. Electrical control box; 7. Second inclined contact surface; 8. Positioning rod; 9. Rotary motor; 10. Second inclined contact surface; 11. Connecting block; 12. Positioning shaft hole; 13. Guide bushing; 14. Liquid storage chamber; 15. Drilling motor; 16. Liquid inlet chamber; 17. Tensioning rod; 18. Fourth spring; 19. Drill bit; 20. Third spring; 21. Stepped surface; 22. Bearing; 23. Shaft tube; 24. First spring; 25. Limiting ring; 26. Sealing piston; 40. Second spring. Detailed Implementation

[0037] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0038] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0039] In the description of this invention, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0040] Furthermore, in the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] The terms used in this invention, such as “above,” “over,” “below,” and “under,” indicating spatial relative position, are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms of spatial relative position may be intended to include different orientations of the device in use or operation other than those shown in the figures. For example, if the device in the figures is flipped, a unit described as being “below” or “under” other units or features would be located “above” other units or features. Therefore, the exemplary term “under” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or otherwise) and the spatially related descriptive terms used herein shall be interpreted accordingly.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] like Figures 1-3 As shown, the present invention provides a quick muffler exhaust pipe drilling device, which includes a connecting column composed of multiple spliced ​​tiles 2. After the spliced ​​tiles 2 are assembled into the connecting column, a working cavity with open ends is formed inside. A hollow shaft tube 23 is provided in the working cavity. The shaft tube 23 forms a shaft tube 23 cavity with open ends. A sealing piston 26 is provided in each of the two shaft tube 23 cavities. The two sealing pistons 26 seal the two openings of the shaft tube 23 cavity, and a closed liquid storage cavity 14 is formed inside the shaft tube 23 cavity. The liquid storage cavity 14 can store some coolant, etc., to increase the heat dissipation capacity of the drilling part in contact with it.

[0044] A rotary drive component 1 is provided on each side of the connecting column. The rotary drive component 1 opens up each splicing tile 2 and drives the shaft tube 23 to rotate. The rotary drive component 1 has the functions of rotation and compression. The rotary drive component 1 can be used to compress the splicing tile 2 and rotate the shaft tube 23.

[0045] In order to make the shaft tube 23 rotate under the action of the rotary drive 1, a bearing 22 is provided on each side of the working cavity. The shaft tube 23 is installed in the shaft hole of the bearing 22 on both sides. A tension rod 17 is provided on the outer ring of the bearing 22 for each splicing bearing. The bearing 22 and each splicing tile 2 are elastically connected through the tension rod 17. When the rotary drive 1 squeezes the splicing tiles 2 on both sides, the bearing 22 and the shaft tube 23 do not move, and the splicing tile 2 is stretched and expanded relative to the bearing 22. The tension rod 17 is stretched. At this time, the distance between the splicing tile 2 and the bearing 22 is widened, so that the splicing tile 2 moves closer to the inner wall of the muffler exhaust pipe 3.

[0046] It also includes a drilling mechanism, which is set in the guide sleeve 13 set in the cavity of the shaft tube 23. Each splicing tile 2 is provided with an elastic support sleeve corresponding to the position of the drilling mechanism. When each splicing tile 2 is expanded, the elastic support sleeve contacts and presses against the inner wall of the muffler exhaust pipe 3. The expanded splicing tile 2 carries the elastic support sleeve toward the inner wall of the muffler exhaust pipe 3, and finally makes the elastic support sleeve contact and press against the muffler exhaust pipe 3, thus completing the positioning of the entire device in the muffler exhaust pipe 3.

[0047] In order to achieve the compression between the rotary drive component 1 and the spliced ​​tile 2, each side of the spliced ​​tile 2 has a first inclined contact surface, and a horn-shaped compression cavity is formed between each first inclined contact surface. A second inclined contact surface 10 is provided on the rotary drive component 1 at the position corresponding to the first inclined contact surface. One end of the rotary drive component 1 with the second inclined contact surface 10 is inserted into the compression cavity, so that the second inclined contact surface 10 and the first inclined contact surface are in compression contact. Therefore, when it is necessary to position this device with the muffler exhaust pipe 3, as long as the rotary drive component 1 is pushed out, the compression between the inclined contact surfaces can be used to open each spliced ​​tile 2, thereby making the elastic support sleeve contact and position itself with the inner wall of the muffler exhaust pipe 3. Figure 3 and Figure 6 As shown.

[0048] like Figure 3As shown, each rotary drive component 1 includes a drive shaft. A second inclined contact surface 10 is disposed on one side of the drive shaft. The other end of the drive shaft is connected to a cylinder, a hydraulic cylinder, or an electric push rod. A rotary motor 9 is built into the drive shaft. A connecting block 11 is fixedly installed at the output end of the motor shaft of the rotary motor 9. A positioning rod is provided at the other end of the connecting block 11. A positioning shaft hole 12 is provided on the outer end of the sealing piston 26 facing the axial direction of the positioning rod. The push rod is positioned and inserted into the positioning shaft hole 12. The drive motor drives the connecting block 11 and the positioning rod to rotate. In the figure, when the rotary drive component 1 is pressing and splicing the tile 2, that is, when the cylinder, hydraulic cylinder, or electric push rod is not applying force, the positioning rod is only inserted into the positioning shaft hole 12 at its head. Therefore, the positioning rod is in the positioning shaft hole 12. There is still a relatively long feasible distance within 2. Therefore, when the cylinder, hydraulic cylinder, or electric push rod applies force, the drive shaft is used to squeeze the splicing tile 2. At this time, the positioning rod has not yet reached the bottom of the positioning shaft hole 12, so what is being stretched open is the splicing tile 2. Therefore, the initial squeezing of the cylinder, hydraulic cylinder, or electric push rod only completes the positioning support between the splicing tile 2 and the muffler exhaust pipe 3, and does not squeeze the sealing piston 26. As the squeezing continues, the positioning rod is continuously inserted into the positioning shaft hole 12 and eventually contacts the bottom of the positioning shaft hole 12. At this time, the squeezing force will push the sealing piston 26, and use the sealing piston 26 to squeeze the liquid in the liquid storage chamber 14, thereby pushing out the drilling mechanism, and finally making the drilling mechanism squeeze and contact the inner wall of the muffler exhaust pipe 3 to complete the drilling.

[0049] like Figure 6 As shown, in order to drive the sealing piston 26 and the shaft tube 23 to rotate, in this embodiment, the cross-sectional shape of the positioning rod and the positioning shaft hole 12 are both square. Therefore, the rotary motor 9 can be used to drive the connecting block 11 to rotate, thereby driving the positioning rod to rotate, and the rotation of the positioning rod drives the sealing piston 26 to rotate.

[0050] To allow the sealing piston 26 to return to its position after being pushed away, in this embodiment, a limit ring 25 is provided on the inner wall of the shaft tube 23 on the side of the sealing piston 26 facing away from the rotary drive 1. Figure 5 As shown, a first spring 24 is installed between the limiting ring 25 and the sealing piston 26. One end of the first spring 24 is fixedly connected to the limiting ring 25, and the other end is fixedly connected to the end face of the sealing piston 26.

[0051] In order to enable the sealing piston 26 to drive the shaft tube 23 to rotate when it rotates, in this embodiment, a slider is provided on one side of the sealing piston 26, and a groove is provided on the inner wall of the shaft tube 23 corresponding to the position of the slider. The groove extends along the axial direction of the shaft tube 23. The slider slides into the groove, so that the rotation of the sealing piston 26 can drive the shaft tube 23 to rotate. In order to improve the sealing performance, the outer wall surface of the sealing piston 26 and the outer wall surface of the slider are both wrapped with a rubber sealing layer.

[0052] To improve drilling efficiency, the drilling mechanism in this embodiment is arranged in a straight line within the guide sleeves 13 inside the shaft tube 23. Each guide sleeve 13 has a liquid inlet chamber 16. Figure 3 and Figure 4 As shown, the drilling mechanism includes a drilling motor 15 and a drilling bit 19. The outer wall of the drilling motor 15 is covered with a rubber sealing layer. The drilling motor 15 has the same cross-sectional shape as the liquid inlet chamber 16, so the entire drilling motor 15 is waterproof and insulated. It acts as a piston to seal the liquid inlet chamber 16. The drilling motor 15 is sealed in the liquid inlet chamber 16 by the rubber sealing layer. A second spring 40 is installed in the space at the top of the drilling motor 15. The second spring 40 pushes the drilling motor 15 out and close to the bottom opening of the liquid inlet chamber 16. When the sealing pistons 26 on both sides of the shaft tube 23 are squeezed inward, the liquid in the storage chamber 14 enters the bottom liquid inlet chamber 16 of each guide sleeve 13 and pushes the drilling motor 15 up, causing the second spring 40 to be elastically compressed. The function of the second spring 40 is to reset the drilling motor 15. When the sealing pistons 26 on both sides of the storage chamber 14 are squeezed, the liquid will enter the liquid inlet chamber 16, thereby pushing the drilling motor 15 to achieve the purpose of drilling.

[0053] The drilling bit 19 passes through the drill hole on the shaft tube 23 and extends into the elastic support sleeve. When the sealing piston 26 pushes inward, the drilling bit 19 passes through the drill hole and the elastic support sleeve and extends to the outside, contacting the inner wall of the muffler exhaust pipe 3 to make a hole. It should be noted that when the shaft tube 23 is rotated by the rotary motor 9 to change different drilling positions, the drilling bit 19 needs to retract from the elastic support sleeve in order to rotate. Therefore, when rotating the shaft tube 23, the sealing piston 26 on both sides of the liquid storage chamber 14 needs to be released, and then the rotary motor 9 needs to be controlled to rotate to switch the drilling position. In this embodiment, four sets of drilling mechanisms are set in the circumferential direction. Therefore, the rotation angle of the rotary motor 9 is 90 degrees each time. The rotation angle of the rotary motor 9 each time can be determined according to the number of sets of drilling mechanisms.

[0054] like Figure 4 , Figure 7 and Figure 8As shown, the elastic support sleeve includes a fixed sleeve 5 and a movable sleeve 4. The movable sleeve 4 is telescopically inserted into the fixed sleeve 5. A third spring 20 is fixedly connected to the bottom of its insertion end. The other end of the third spring 20 is fixedly connected to the stepped surface 21 set in the fixed sleeve 5. The third spring 20 pushes the movable sleeve 4 outward. Both the movable sleeve 4 and the fixed sleeve 5 are provided with a drilling channel for the drill bit 19 to pass through. A contact rubber ring is provided on the outer end face of the movable sleeve 4. When the splicing tile 2 is stretched open, the movable sleeve 4 on the elastic support sleeve will first contact the inner wall of the muffler exhaust pipe 3 and be squeezed. When the squeezing continues and pushes the sealing piston 26, the movable sleeve 4 is squeezed, the third spring 20 is compressed, and the drill bit extends out and contacts the muffler exhaust pipe 3 to drill a hole.

[0055] One end of the tension rod 17 is fixedly welded to the outer wall of the bearing 22, and the other end is inserted into the tension hole at the beginning of the inner wall of the splicing tile 2. A fourth spring 18 is fixedly welded into each tension hole. The other end of the fourth spring 18 is fixedly welded to the end face of the tension rod 17. When the splicing tile 2 is squeezed and expanded, the tension rod 17 is stretched and the fourth spring 18 is stretched, but the two always remain in a positional connection, so that the splicing tile 2 has a certain expansion and stretching capacity relative to the bearing 22.

[0056] Among them, an electrical control box 6 is also installed on the outside of the splicing tile 2. The electrical control box 6 is connected to each drilling motor 15 and rotary motor 9, and provides power to the drilling motor 15 and rotary motor 9 and controls the switches.

[0057] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A quick muffler exhaust pipe punching apparatus characterized by: The connecting column is composed of a plurality of spliced tiles (2), each spliced tile (2) forms an open-ended working cavity after being spliced into the connecting column, a hollow shaft tube (23) is arranged in the working cavity, a shaft tube (23) cavity is formed in the shaft tube (23), a sealing piston (26) is arranged in each side of the shaft tube (23) cavity, the two sealing pistons (26) seal the two side openings of the shaft tube (23) cavity, and the inside of the shaft tube (23) cavity forms a closed liquid storage cavity (14), each side of the connecting column is provided with a rotary driving member (1), each spliced tile (2) is expanded by the rotary driving member (1), and the shaft tube (23) is driven to rotate; Each side of the working cavity is provided with a bearing (22), the shaft tube (23) is installed in the shaft hole of the bearing (22), and a stretching rod (17) is arranged on the outer ring of the bearing (22) corresponding to each spliced tile (2); the bearing (22) and each spliced tile (2) are elastically connected through the stretching rod (17); A punching mechanism is arranged in the guide sleeve (13) arranged in the shaft tube (23) cavity, and each spliced tile (2) is provided with an elastic supporting sleeve corresponding to the position of each punching mechanism; when each spliced tile (2) is expanded, the elastic supporting sleeve is in contact and pressed against the inner wall surface of the muffler exhaust pipe (3); Each side surface of the spliced tile (2) has a first inclined contact surface, each first inclined contact surface forms a horn-shaped extrusion cavity, the rotary driving member (1) is provided with a second inclined contact surface (10) corresponding to the position of the first inclined contact surface, one end of the rotary driving member (1) having the second inclined contact surface (10) is arranged in the extrusion cavity, the second inclined contact surface (10) is in extrusion contact with the first inclined contact surface, the rotary driving member (1) includes a driving shaft, the second inclined contact surface (10) is arranged on one side of the driving shaft, the other end of the driving shaft is connected with a gas cylinder, an oil cylinder or an electric push rod, a rotary motor (9) is arranged in the driving shaft, a connecting block (11) is fixedly installed on the motor shaft output end of the rotary motor (9), the other end of the connecting block (11) is provided with a positioning rod, the outer side end of the sealing piston (26) opposite to the axial direction of the positioning rod is provided with a positioning shaft hole (12), and the positioning rod is positioned and arranged in the positioning shaft hole (12) and is rotated by the driving motor. When the sealing pistons (26) on both sides of the shaft tube (23) are extruded inward, the liquid in the liquid storage cavity (14) enters the bottom liquid inlet cavity (16) of each guide sleeve (13) and pushes the punching mechanism, so that the punching purpose is achieved.

2. The quick muffler exhaust pipe punching apparatus of claim 1, wherein: The cross-sectional shape of the positioning rod and the positioning shaft hole (12) is square.

3. The quick muffler exhaust pipe punching apparatus of claim 1, wherein: The inner wall of the shaft tube (23) cavity on the side away from the rotary drive (1) of the sealing piston (26) is provided with a limiting ring (25), the limiting ring (25) is provided with a first spring (24) between the sealing piston (26), one end of the first spring (24) is fixedly connected with the limiting ring (25), the other end is fixedly connected with the end surface of the sealing piston (26), the sealing piston (26) is provided with a sliding block on one side, the inner wall of the shaft tube (23) cavity is provided with a sliding groove corresponding to the position of the sliding block, the sliding groove extends along the axial direction of the shaft tube (23) cavity, the outer wall surface of the sealing piston (26) and the outer wall surface of the sliding block are wrapped with a rubber sealing layer.

4. The quick muffler exhaust pipe punching apparatus of claim 1, wherein: The punching mechanism is arranged in the guide sleeve (13) in the shaft tube (23) cavity in a linear arrangement, each guide sleeve (13) is provided with a liquid inlet cavity (16), the punching mechanism comprises a punching motor (15) and a punching drill bit (19), the outer wall surface of the punching motor (15) is wrapped with a rubber sealing layer, the punching motor (15) and the liquid inlet cavity (16) have the same cross-sectional shape, the punching motor (15) is sealingly arranged in the liquid inlet cavity (16) through the rubber sealing layer, a second spring (40) is arranged at the top of the punching motor (15), the punching motor (15) is pushed out and close to the bottom opening position of the liquid inlet cavity (16) through the second spring (40), when the sealing pistons (26) on both sides of the shaft tube (23) are extruded inward, the liquid in the liquid storage cavity (14) enters the bottom liquid inlet cavity (16) of each guide sleeve (13) and pushes the punching motor (15), so that the second spring (40) is elastically compressed.

5. The quick muffler exhaust pipe punching apparatus of claim 4, wherein: The punching drill bit (19) penetrates the drill bit hole formed in the shaft tube (23) and extends into the elastic support sleeve, and when the sealing piston (26) is extruded and pushed, the punching drill bit (19) penetrates the drill bit hole and the elastic support sleeve and extends to the outside to contact the inner wall surface of the muffler exhaust pipe (3).

6. The quick muffler exhaust pipe punching apparatus of claim 1, wherein: The elastic support sleeve comprises a fixed sleeve (5) and a movable sleeve (4), the movable sleeve (4) is telescopically inserted into the fixed sleeve (5), a third spring (20) is fixedly connected to the bottom of the insertion end of the movable sleeve (4), the other end of the third spring (20) is fixedly connected to the step surface (21) arranged in the fixed sleeve (5), the movable sleeve (4) is pushed out by the third spring (20), the movable sleeve (4) and the fixed sleeve (5) are provided with a punching channel for the punching drill bit (19) to pass through, and the outer side end surface of the movable sleeve (4) is provided with a contact rubber ring.

7. The quick muffler exhaust pipe punching apparatus of claim 1, wherein: One end of the stretching rod (17) is fixedly welded with the outer wall surface of the bearing (22), the other end is inserted into the stretching hole formed in the inner wall surface of the spliced tile (2), a fourth spring (18) is fixedly welded in the stretching hole, the other end of the fourth spring (18) is fixedly welded with the end surface of the stretching rod (17).

8. The quick muffler exhaust pipe punching apparatus of claim 4, wherein: The outer part of the spliced tile (2) is further provided with an electric control box (6), each punching motor (15) and rotary motor (9) is connected by the electric control box (6), and the electric control box (6) supplies power and controls the switch of the punching motor (15) and the rotary motor (9).

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