Riveting device of electrical control circuit breaker

Abstract

The invention relates to the technical field of circuit breaker assembly, in particular to a riveting device of an electrical control circuit breaker, which comprises a riveting part and feeding parts positioned on two sides of one end of the riveting part, and the riveting part comprises a bracket II and a riveting mechanism mounted at the top of the bracket II; the riveting mechanism is composed of a material pushing module used for intermittently pushing a shell to be riveted and a riveting module used for automatically penetrating rivets and completing the riveting action, the feeding part comprises a first bracket fixedly connected with a second bracket, and a material conveying belt is installed at the top end of the first bracket. A transposition adjusting mechanism used for adjusting the direction of a shell to be riveted is fixedly installed in the middle of the top of the first bracket, and a discharging mechanism used for sequentially placing the shell to be riveted and an overturning assembly used for erecting the shell to be riveted after position calibration are installed at the two ends of the first bracket correspondingly. According to the automatic riveting machine, full-automatic feeding and position adjustment can be achieved, automatic rivet penetrating and riveting actions can be synchronously completed, and continuous riveting machining is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breaker assembly, in particular to a riveting device for an electrical control circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and interrupt the current under normal circuit conditions and close, carry and interrupt the current under abnormal circuit conditions within a specified time. At present, during the assembly and production process of circuit breakers, it is necessary to fix the left and right shells together by riveting or connect multiple circuit breakers by rivets.

[0003] The prior art discloses a Chinese patent with publication number CN 112908784 B: an integrated automatic riveting device for circuit breaker rivets, and discloses a material shifting and positioning device, a primary riveting and rivet-inserting device and a secondary riveting device. The riveting effect is improved by using the material shifting and positioning device to intermittently move the circuit breaker, and using the primary riveting and rivet-inserting device and the secondary riveting device to perform secondary riveting on the circuit breaker.

[0004] However, the above-mentioned prior art still has certain defects, that is, during use, when the circuit breaker is transported by the material moving and positioning device, if the circuit breaker is placed incorrectly, the subsequent riveting action may easily damage the circuit breaker, and nails may be easily missed during the riveting action. Summary of the invention

[0005] The object of the present invention is to provide a riveting device for an electrical control circuit breaker to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A riveting device for an electrical control circuit breaker comprises a riveting part and feeding parts located at both sides of one end of the riveting part, the riveting part comprises a bracket 2 and a riveting mechanism installed on the top of the bracket 2, the riveting mechanism comprises a pushing module for intermittently pushing a shell to be riveted and a riveting module for automatically inserting rivets and completing the riveting action, two side plates are fixedly arranged on the top of the bracket 2, the pushing module is installed between the two side plates, and the riveting module is installed in the middle of one of the side plates;

[0008] The feeding part includes a bracket one fixedly connected to a bracket two, a feeding belt is installed on the top of the bracket one, a rotation adjustment mechanism for adjusting the direction of the shell to be riveted is fixedly installed on the middle of the top of the bracket one, and a discharge mechanism for sequentially placing the shell to be riveted and a flip assembly for standing up the shell to be riveted after position calibration are respectively installed at both ends of the bracket one.

[0009] In a preferred embodiment, the discharging mechanism includes a guide frame fixedly connected to the outer side of a bracket, three brackets are fixedly connected to the bottom of the guide frame, a mounting frame is fixedly connected between the three brackets, a turntable is rotatably installed on the bottom inner side of the guide frame, and a drive motor for driving the turntable to rotate is fixedly installed on the inner side of the mounting frame.

[0010] In a preferred embodiment, the indexing adjustment mechanism comprises two U-shaped frames fixedly mounted on the top of a bracket, a disc is fixedly mounted between the top surfaces of the two U-shaped frames, a convex column groove is opened at the bottom of the disc, and a CCD camera is fixedly mounted on the top of the inner side of the convex column groove;

[0011] Two arc-shaped supporting plates are fixedly provided at the bottom end of the inner side of the convex column groove, and arc-shaped recessed grooves are provided at the top of the bracket corresponding to the gap formed between the opposite ends of the two arc-shaped supporting plates. Clamping assemblies are provided inside the two arc-shaped recessed grooves, and cylinder 2 for driving the clamping assembly to rise and fall is fixedly installed at the bottom of the bracket corresponding to the positions of the two arc-shaped recessed grooves, and a power assembly for driving the clamping assembly to change its position after rising is installed at the top of the disc.

[0012] In a preferred embodiment, the clamping assembly includes an arc block adapted to the arc-shaped groove, a rack is fixedly provided on the top of the arc block, a receiving groove is opened in the middle of one side of the arc block, a cylinder one is fixedly installed inside the receiving groove, the telescopic end of the cylinder one is fixedly connected with a clamp, a T-shaped arc groove is opened through the bottom of the arc block, a T-shaped slider fixedly connected to the telescopic end of the cylinder two is slidably installed inside the T-shaped arc groove, and clamps are fixedly provided at both ends of the rack.

[0013] In a preferred embodiment, the power assembly includes a cross ring groove opened inside the convex column groove, and two cross arc bars corresponding to the arc-shaped support plates are slidably connected inside the cross ring groove, and a tooth groove is opened at the top of the cross arc bar, and a clamping groove adapted to the clamping head is opened at both ends of the cross arc bar;

[0014] The power assembly also includes a through groove opened on the top of the disc and connected to the cross ring groove, and a servo motor fixedly installed on the top of the disc. The end of the output shaft of the servo motor is fixedly connected to a gear meshing with the tooth groove at the top of the cross arc bar.

[0015] In a preferred embodiment, the flip assembly includes a slot passing through bracket two and the corresponding side panel, and a flip seat is rotatably installed on the inner side of the slot at the position where bracket two and the side panel intersect. The flip seat consists of a roller and four L-shaped flaps evenly distributed in a ring shape fixed on the outside of the roller, and a servo motor for driving the corresponding roller to rotate is fixedly installed on the outside of bracket two.

[0016] In a preferred embodiment, the pusher module includes a mounting plate fixed between opposite sides of one end of the two side plates and a pusher plate located on one side of the side plate, a cylinder three is fixedly installed in the middle of the other side of the mounting plate, the telescopic end of the cylinder three movably passes through the mounting plate and is fixedly connected to the pusher plate, and anti-dumping components are installed on opposite sides of one end of the two side plates close to the bracket one;

[0017] The anti-dumping assembly includes an L-shaped plate fixed at the inner top edge position of the corresponding side plate, a baffle is provided on the inner side of the L-shaped plate, and a spring telescopic rod is fixedly connected between the baffle and the inner wall of the L-shaped plate;

[0018] The pushing module also includes a groove opened in the middle of the inner side of the side plate away from the riveting module, a negative pressure adsorption platform is provided inside the groove, and a cylinder four is fixedly installed on the outer side of the side plate with the groove, and the telescopic end of the cylinder four movably passes through the corresponding side plate and is fixedly connected to the negative pressure adsorption platform.

[0019] In a preferred embodiment, the riveting module includes a seat block fixedly embedded in the middle of the corresponding side plate, a mounting column slot is opened through the middle of the seat block, a rotating column is rotatably installed inside the mounting column slot, and a driving motor 2 for driving the rotating column to rotate is fixedly installed on one side of the seat block;

[0020] A plurality of brackets evenly distributed in a ring shape are provided in the middle of the outer side of the rotating column, a rivet bin is provided at the top of the seat block, a leakage groove connected to the mounting column groove is provided at the bottom of the rivet bin, a plurality of vertical grooves connected to the mounting column groove are provided at the bottom of the seat block, through holes are provided on both sides of the bottom end of each vertical groove, and a U-shaped bracket is fixedly provided in the middle of the inner bottom end of each vertical groove.

[0021] In a preferred embodiment, the riveting module further comprises a support platform fixed on the outside of the bracket 2 and a fixed plate fixed on the outside of the seat block, a fixed seat is fixed on the top of the support platform, a movable seat is overlapped on the top of the fixed seat, a discharge hole is penetrated and opened at the position corresponding to each perforation on one side of the movable seat, and a round tube movably plugged into the corresponding perforation is fixedly connected at the position corresponding to each discharge hole on the outside of the movable seat, and a spring 1 for fixing the seat block and the movable seat is sleeved on the outside of each round tube;

[0022] The bottom of the fixed plate is fixedly installed with a cylinder 5, the telescopic end of the cylinder 5 is fixedly connected with a push block, the bottom of the push block is fixedly connected with an inclined plate, and the top of the movable seat is penetrated with an inclined slot;

[0023] A slot is provided on one side of the movable seat away from the seat block, a collection frame is movably inserted in the slot, and a limit clamp for clamping the collection frame is provided between the collection frame and the movable seat, and a support plate that fits the support platform is fixedly provided at one end of the bottom of the collection frame away from the movable seat;

[0024] A rivet clamping assembly is provided at a position corresponding to each round tube between the movable seat and the seat block, and the rivet clamping assembly includes a plurality of evenly distributed annular embedding grooves opened on the outer side of the round tube and a trapezoidal block fixed on the outer side of the seat block and corresponding to the embedding grooves. A through groove connected to the corresponding embedding groove is provided at one end of the inner side of the round tube close to the seat block, and an L-shaped clamping strip is movably embedded in each embedding groove, and a plurality of spring telescopic rods are fixedly connected between the inner side of the L-shaped clamping strip and the inner bottom end surface of the embedding groove;

[0025] A groove cavity is also provided on one side of the seat block away from the movable seat, a cylinder six is ​​fixedly installed on the top of the inner side of the groove cavity, a lifting bar is fixedly connected to the telescopic end of the cylinder six, and a stop fork is fixedly connected to the bottom of the lifting bar at the position corresponding to each perforation.

[0026] In a preferred embodiment, a marking mechanism is provided at one end of the top of the side plate on which the riveting module is installed, and the marking mechanism includes an L-shaped pressing plate fixed to one side of the push block and an L-shaped seat fixed to the top of the side plate on which the riveting module is embedded, and four vertical rods distributed in a rectangular shape are fixedly provided on the top of the L-shaped seat, and a lifting plate is movably sleeved between the four vertical rods, and a spring 2 for fixing the lifting plate and the L-shaped seat is sleeved on the outer side of each vertical rod, and a marking machine is fixedly installed at the bottom of the lifting plate, and a laser head is installed at the working end of the marking machine;

[0027] The working end of the marking machine is also provided with a protective component, which includes a rotating cylinder threadedly connected to the working end of the marking machine, a cover cylinder movably sleeved on the outside of the rotating cylinder, and a spring three for fixedly connecting the marking machine and the cover cylinder is sleeved on the outside of the rotating cylinder, an air pipe is connected to the bottom end of the outside of the cover cylinder, and a clamping seat for fixing the air pipe is fixedly connected to the outside of the L-shaped seat.

[0028] Beneficial effects of the present invention:

[0029] 1. The present invention uses a discharge mechanism to place the shells to be riveted and push them onto the conveyor belt, and uses a transfer adjustment mechanism to adjust the orientation of the shells to be riveted during the conveying process, and then uses a flip assembly to flip the shells to be riveted 90 degrees after the orientation adjustment, and uses a push module to synchronously transport the left and right shells placed vertically to the riveting station, thereby realizing continuous automatic feeding and workpiece position calibration;

[0030] 2. The present invention uses the inclined plate that moves up and down with the push block to control the movable seat to move back and forth, and uses the blocking fork that moves up and down with the lifting bar inside the groove cavity to complete the multi-hole synchronous automatic nailing and riveting action;

[0031] 3. The present invention intermittently pushes the marking machine downward by using an L-shaped pressure plate that moves up and down synchronously with the push block, and uses a laser head to complete the marking action of the circuit breaker after riveting. At the same time, the smoke and harmful gases generated during the marking process can be extracted and processed centrally. In addition, the cover tube can also be used to shield the laser to prevent glare. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle;

[0034] Figure 2 is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0035] Figure 3 It is a schematic diagram of the structure of the discharging mechanism of the present invention;

[0036] Figure 4 It is a schematic diagram of the structure of the indexing adjustment mechanism of the present invention;

[0037] Figure 5 It is a schematic side cross-sectional view of the entire indexing adjustment mechanism of the present invention;

[0038] Figure 6 The present invention Figure 4 A schematic diagram of the structure enlargement of part A;

[0039] Figure 7 The present invention Figure 5 A schematic diagram of the structure of part B in the middle is enlarged;

[0040] Figure 8 The present invention Figure 5 The enlarged schematic diagram of the structure of part C in the middle;

[0041] Fig. 9 It is a schematic diagram of the structure of the riveting mechanism of the present invention;

[0042] Fig.10 It is a schematic diagram of the structure of the anti-dumping assembly of the present invention;

[0043] Fig.11 is a side cross-sectional schematic diagram of a riveting portion of the riveting mechanism of the present invention;

[0044] Fig.12 It is a front cross-sectional schematic diagram of the riveting part of the riveting mechanism of the present invention;

[0045] Fig.13 It is a schematic diagram of the structure of the rivet clamping assembly of the present invention;

[0046] Fig.14 It is a structural schematic diagram of the marking mechanism of the present invention;

[0047] Fig.15 It is a schematic diagram of a finished product after riveting of the present invention.

[0048] The reference numerals in the figure are as follows: 1, bracket 1; 2, conveyor belt; 3, discharge mechanism; 31, guide frame; 32, turntable; 33, bracket; 34, mounting frame; 4, indexing adjustment mechanism; 41, U-shaped frame; 42, disc; 43, convex column groove; 44, CCD camera; 45, arc support plate; 46, clamping assembly; 461, arc block; 462, rack; 463, T-shaped arc groove; 464, containing groove; 465, cylinder 1; 466, clamping plate; 47, arc sinker slot; 48, cylinder 2; 49, cross ring slot; 410, cross arc strip; 411, slot; 412, tooth slot; 413, through slot; 414, gear; 415, servo motor; 5, flip assembly; 51, notch; 52, flip seat; 6, riveting mechanism; 61, mounting plate; 62, cylinder 3; 63, push plate; 64, anti-dumping assembly; 641, L-shaped plate; 642, baffle; 643, spring telescopic rod 1; 65, negative pressure adsorption table; 66, cylinder 4; 67, seat block; 68, rotating column; 69, rivet bin; 610, drain groove; 611, bracket; 612, vertical groove; 613, perforation; 614, U-shaped bracket; 615, round tube; 616, movable seat; 617, collection frame; 618, spring one; 619, inclined groove; 620, fixed plate; 621, cylinder five; 622, push block; 623, inclined plate; 624, slot; 625, support plate; 626, support platform; 627, limit card; 628, discharge hole; 629, through slot; 630, trapezoidal block; 631, embedded slot; 632, L-shaped clamp; 633, spring telescopic rod II; 634, stop fork; 635, lifting strip; 636, cylinder six; 7, bracket II; 8, marking mechanism; 81, L-shaped seat; 82, vertical rod; 83, lifting plate; 84, spring II; 85, marking machine; 86, laser head; 87, rotating drum; 88, cover drum; 89, spring III; 810, air pipe; 811, holder; 812, L-shaped pressure plate. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] The electrical control circuit breaker of the present invention is a kind of power electronic component in the smart grid industry, wherein the riveting device is a part of the equipment in the production process of the circuit breaker, and is used to assemble the left and right shells of the circuit breaker.

[0051] Example 1

[0052] Refer to the instruction manual Figure 1-2 A riveting device for an electrical control circuit breaker according to an embodiment of the present invention comprises a riveting portion and a feeding portion located at both sides of one end of the riveting portion, the riveting portion comprises a bracket 7 and a riveting mechanism 6 installed on the top of the bracket 7, the riveting mechanism 6 comprises a pushing module for intermittently pushing a housing to be riveted and a riveting module for automatically inserting rivets and completing the riveting action, two side plates are fixedly provided on the top of the bracket 7, the pushing module is installed between the two side plates, and the riveting module is installed in the middle of one of the side plates;

[0053] The feeding part includes a bracket 1 fixedly connected to a bracket 2 7, a feeding belt 2 is installed on the top of the bracket 1, a rotation adjustment mechanism 4 for adjusting the direction of the shell to be riveted is fixedly installed on the middle of the top of the bracket 1, and a discharge mechanism 3 for sequentially placing the shell to be riveted and a flip component 5 for erecting the shell to be riveted after position calibration are respectively installed at both ends of the bracket 1.

[0054] It should be noted that the present invention uses the discharge mechanism 3 to place the shells to be riveted and push them onto the conveyor belt 2, and uses the indexing adjustment mechanism 4 to adjust the orientation of the shells to be riveted during the conveying process, and then uses the flip assembly 5 to flip the shells to be riveted 90 degrees after the orientation adjustment, and uses the push module to synchronously transport the left and right shells placed vertically to the riveting station, so as to complete the multi-hole synchronous automatic nailing and riveting;

[0055] Furthermore, the riveting method mentioned in the present invention adopts core-pulling riveting.

[0056] Specifically, Figure 1 and Figure 3 As shown, the discharge mechanism 3 includes a guide frame 31 fixedly connected to the outer side of the bracket 1, wherein the inner area of ​​the guide frame 31 is divided into a shell material stacking area to be riveted and a sequential discharge area, and the discharge end of the sequential discharge area is through-set with the corresponding side of the bracket 1, three brackets 33 are fixedly connected to the bottom of the guide frame 31, and a mounting frame 34 is fixedly connected between the three brackets 33. A turntable 32 is rotatably installed at the bottom of the inner side of the guide frame 31, and a driving motor 1 for driving the turntable 32 to rotate is fixedly installed on the inner side of the mounting frame 34.

[0057] It should be noted that, in the process of sequentially placing the target shells to be riveted, the left and right shells to be riveted are first stacked with the snap-fitting surfaces facing upward in the stacking area inside the guide frame 31, and then the drive motor 1 is used to drive the turntable 32 to rotate, so that the shells to be riveted inside the stacking area are conveyed to the sequential discharge area, and the tapered design of the feed end of the sequential discharge area is used to make the shells to be riveted that have completely entered the sequential discharge area enter the conveyor belt 2 in a manner that the side end face is vertical to the bracket 1.

[0058] Specifically, Figure 1 and Figure 4-8 As shown, the indexing adjustment mechanism 4 includes two U-shaped frames 41 fixedly mounted on the top of the bracket 1, a disk 42 is fixedly mounted between the top surfaces of the two U-shaped frames 41, a convex column groove 43 is opened at the bottom of the disk 42, and a CCD camera 44 for detecting whether the orientation of the shell to be riveted is correct is fixedly mounted on the top of the inner side of the convex column groove 43 to ensure that the buckling surfaces of the left and right shells to be riveted after entering the riveting station are in the correct orientation (i.e., Fig.15 shown) are consistent;

[0059] Two arc-shaped supporting plates 45 are fixedly provided at the bottom inner side of the convex column groove 43, arc-shaped sinking grooves 47 are provided at the top of the bracket 1 corresponding to the gap formed between the opposite ends of the two arc-shaped supporting plates 45, and clamping components 46 are provided inside the two arc-shaped sinking grooves 47, and cylinders 48 for driving the clamping components 46 to move up and down are fixedly installed at the positions of the two arc-shaped sinking grooves 47 at the bottom of the bracket 1, and a power component for driving the clamping components 46 to change positions after they are raised is installed at the top of the disc 42;

[0060] The clamping assembly 46 includes an arc block 461 adapted to the arc-shaped sink groove 47, a rack 462 arranged in an arc shape is fixedly arranged on the top of the arc block 461, a receiving groove 464 is provided in the middle of one side of the arc block 461, a cylinder 1 465 is fixedly installed inside the receiving groove 464, a clamping plate 466 is fixedly connected to the telescopic end of the cylinder 1 465, a T-shaped arc groove 463 is provided through the bottom of the arc block 461, a T-shaped slider fixedly connected to the telescopic end of the cylinder 2 48 is slidably installed inside the T-shaped arc groove 463, and clamps are fixedly provided at both ends of the rack 462;

[0061] The power assembly includes a cross ring groove 49 opened inside the convex column groove 43, and the cross ring groove 49 is slidably connected with two cross arc bars 410 corresponding to the arc-shaped support plates 45. The top of the cross arc bar 410 is provided with a tooth groove 412, and both ends of the cross arc bar 410 are provided with a clamping groove 411 adapted to the clamping head, so that after the two arc blocks 461 are completely pushed into the convex column groove 43, the rack 462 arranged in the shape of a top of the arc block 461 can form a complete tooth ring with the cross arc bar 410;

[0062] The power assembly also includes a through groove 413 opened at the top of the disc 42 and connected to the cross ring groove 49, and a servo motor 415 fixedly installed on the top of the disc 42. The output shaft end of the servo motor 415 is fixedly connected to a gear 414 that meshes with the tooth groove 412 at the top of the cross arc bar 410.

[0063] It should be noted that, in the process of the shell to be riveted entering the conveyor belt 2 and being conveyed to the flipping station step by step with the conveyor belt 2, when the shell to be riveted enters directly under the disc 42, the CCD camera 44 will be used to detect the direction of the shell to be riveted at the current position. If the direction is correct, only the cylinder 1 465 inside the groove 464 on the two arc blocks 461 is controlled to synchronously push the clamping plate 466 to approach the shell to be riveted, and the two clamping plates 466 that move toward each other are used to clamp the shell to be riveted so that it faces the flipping component 5 and enters the flipping station with the conveyor belt 2. If the direction is opposite, the cylinder 1 465 inside the groove 464 on the two arc blocks 461 is controlled to synchronously push the clamping plate 466 to approach the shell to be riveted, and the two clamping plates 466 that move toward each other are used to clamp the shell to be riveted so that it faces the flipping component 5, and then the cylinder 2 48 is controlled to push the arc block 461 at the corresponding position to move upward and enter the convex column groove 43 at the bottom end of the disc 42.

[0064] In the process of pushing the arc block 461 upward to enter the convex column groove 43, the arc block 461 will pass through the gap formed between the opposite ends of the two arc-shaped support plates 45 to enter the convex column groove 43. After the arc block 461 completely enters the convex column groove 43 (that is, the bottom end surface of the arc block 461 is exactly coplanar with the upper end surface of the arc-shaped support plate 45), the clamps at both ends of the rack 462 at the top of the arc block 461 are also completely inserted into the clamping grooves 411 at the opposite ends of the two cross arc bars 410, and a completed gear ring is formed. At this time, the servo motor 415 can be controlled by the control end to drive The movable gear 414 rotates 180°, and the rotating gear 414 is used to drive the gear ring to rotate 180°, driving the shell to be riveted clamped by the two clamping plates 466 to rotate 180° synchronously, completing the adjustment of the direction of the shell to be riveted. During this process, the T-shaped sliding blocks fixedly connected to the telescopic ends of the two cylinders 48 will disengage from the T-shaped arc groove 463 on the initial arc block 461 and enter the T-shaped arc groove 463 on the other arc block 461. After the direction adjustment is completed, the shell to be riveted will fall back onto the conveyor belt 2 again under the action of the cylinder 48, waiting to be transported to the flipping station.

[0065] Specifically, Figure 1 and Fig. 9 As shown, the flip assembly 5 includes a slot 51 passing through the bracket 2 7 and the corresponding side plate, and a flip seat 52 is rotatably installed on the inner side of the slot 51 at the position where the bracket 2 7 and the side plate intersect. The flip seat 52 consists of a roller and four L-shaped flaps fixed on the outside of the roller and evenly distributed in a ring shape. A servo motor for driving the corresponding roller to rotate is fixedly installed on the outside of the bracket 2 7.

[0066] It should be noted that the horizontal surface of the inner side of the L-shaped flap close to the conveyor belt 2 is coplanar with the upper surface of the conveyor belt 2, wherein, after the shell to be riveted after position correction enters the inner side of the corresponding L-shaped flap along the conveyor belt 2, the control end will control the servo motor to drive the roller to rotate 90°, so as to drive the L-shaped flap supporting the shell to be riveted to synchronously flip 90°. At this time, the inner horizontal surface of the L-shaped flap supporting the shell to be riveted is coplanar with the upper surface of the bracket 2 7, waiting for the pushing module to simultaneously transport the left and right shells to be riveted to the riveting station.

[0067] Specifically, Figure 1 and Figure 9-10 As shown, the pusher module includes a mounting plate 61 fixed between opposite sides of one end of two side plates and a pusher plate 63 located on one side of the side plate, a cylinder 3 62 is fixedly installed in the middle of the other side of the mounting plate 61, and the telescopic end of the cylinder 3 62 movably passes through the mounting plate 61 and is fixedly connected to the pusher plate 63, and anti-dumping components 64 are installed on opposite sides of one end of the two side plates close to the bracket 1;

[0068] The anti-dumping assembly 64 includes an L-shaped plate 641 fixed at the top edge position of the inner side of the corresponding side plate, a baffle 642 is provided on the inner side of the L-shaped plate 641, and a spring telescopic rod 643 is fixedly connected between the baffle 642 and the inner wall of the L-shaped plate 641, wherein the ends of the opposite sides of the two baffles 642 close to the flip assembly 5 are flared to ensure that the shell to be riveted fits the corresponding side plate and is transported to the riveting station, and the spring telescopic rod 643 is composed of a sleeve rod fixedly connected to the baffle 642, a sleeve fixedly connected to the inner side of the L-shaped plate 641, and a straight spring fixedly connected to the baffle 642 and the L-shaped plate 641, and the sleeve rod and the opposite ends of the sleeve are movably sleeved, and the straight spring is sleeved on the outside of the sleeve to ensure that the baffle 642 can only be telescopically changed along the axial direction of the spring telescopic rod 643;

[0069] The pushing module also includes a groove opened in the middle of the inner side of the side panel away from the riveting module, and a negative pressure adsorption platform 65 is arranged inside the groove, wherein the negative pressure adsorption platform 65 is a currently commercially available product, and the specific structure is not described here. A cylinder four 66 is fixedly installed on the outer side of the side panel with the groove, and the telescopic end of the cylinder four 66 is movably penetrated through the corresponding side panel and fixedly connected with the negative pressure adsorption platform 65.

[0070] It should be noted that, after the two flipping assemblies 5 flip the corresponding shells to be welded until their mating surfaces are in a relative setting state, the control end controls the cylinder three 62 to push the push plate 63 to synchronously transport the two flipped and upright shells to be riveted to the riveting station. During this process, as the shells to be riveted are gradually pushed forward, the shells to be riveted will enter the L-shaped plate 641 on the corresponding side anti-dumping assembly 64, and be transported to the riveting station in accordance with the corresponding side plate under the restriction of the baffle 642. After the left and right shells to be riveted enter the riveting station at the same time, the negative pressure adsorption platform 65 will absorb the shells to be riveted at the current position, and then the control end controls the cylinder four 66 to push the vacuum platform closer to the other shell to be riveted, which can effectively avoid the problem of the pushed shells to be riveted tipping over during the movement.

[0071] Specifically, Figure 1 and Figure 9-13 As shown, the riveting module includes a seat block 67 fixedly embedded in the middle of the corresponding side plate, a mounting column slot is opened through the middle of the seat block 67, a rotating column 68 is rotatably installed inside the mounting column slot, and a driving motor 2 for driving the rotating column 68 to rotate is fixedly installed on one side of the seat block 67;

[0072] A plurality of evenly distributed annular brackets 611 are provided in the middle of the outer side of the rotating column 68, wherein the bracket 611 is composed of a thick head section of a U-shaped structure and a thin head section of a Y-shaped structure, so that the rivet is kept in a state of being arranged parallel to the extension direction of the bracket 611 and enters the inside of the bracket 611, a rivet bin 69 is provided at the top of the seat block 67, a leakage groove 610 connected to the installation column groove is provided at the bottom of the rivet bin 69, and a plurality of holes 610 connected to the installation column groove are provided at the bottom of the seat block 67. Vertical grooves 612, each of which has through holes 613 on both sides of the bottom end, and a U-shaped bracket 614 is fixedly provided at the middle of the inner bottom end of each vertical groove 612, wherein the inner side of the U-shaped bracket 614 is also configured as a Y-shaped structure, and has the same structure as the thin head section of the bracket 611, and the U-shaped bracket 614 can be used to support the mandrel of the rivet, so that the axis of the rivet located inside the vertical groove 612 and the axis of the through hole 613 are maintained in a colinear arrangement state;

[0073] The riveting module also includes a support platform 626 fixed on the outside of the bracket 27 and a fixed plate 620 fixed on the outside of the seat block 67. A fixed seat is fixed on the top of the support platform 626, and a movable seat 616 is overlapped on the top of the fixed seat. The movable seat 616 can be supported by the fixed seat so that the movable seat 616 can only move horizontally along the direction of the through hole 613. A discharge hole 628 is penetrated and opened at a position corresponding to each through hole 613 on one side of the movable seat 616, and a circular tube 615 movably plugged into the corresponding through hole 613 is fixedly connected at a position corresponding to each discharge hole 628 on the outside of the movable seat 616. A spring 1 618 is sleeved on the outside of each circular tube 615 for fixing the seat block 67 and the movable seat 616. When the spring 1 618 is in a natural state, the end of the circular tube 615 still remains plugged into the corresponding through hole 613, but does not prevent the rivet in the vertical slot 612 from falling to the position of the through hole 613 under its own gravity.

[0074] A cylinder 621 is fixedly installed at the bottom of the fixed plate 620, a push block 622 is fixedly connected to the telescopic end of the cylinder 621, an inclined plate 623 is fixedly connected to the bottom of the push block 622, and an inclined slot 619 is opened through the top of the movable seat 616;

[0075] A slot 624 is provided on one side of the movable seat 616 away from the seat block 67, and a collection frame 617 is movably inserted in the slot 624, and a limit clamp 627 for clamping the collection frame 617 is provided between the collection frame 617 and the movable seat 616, wherein the limit clamp 627 is composed of positioning holes provided at both ends of the outer side of the collection frame 617 and a spring positioning column installed on the outer side of the movable seat 616, and when the spring of the spring positioning column is in a natural state, the end of the positioning column extends into the slot 624, that is, after one end of the collection frame 617 is inserted into the slot 624, the positioning column can be inserted into the corresponding positioning hole under the action of the spring, so as to limit the position of the collection frame 617, and a support plate 625 that fits the support table 626 is fixedly provided at one end of the bottom of the collection frame 617 away from the movable seat 616;

[0076] A rivet clamping assembly is provided at a position corresponding to each round tube 615 between the movable seat 616 and the seat block 67. The rivet clamping assembly includes a plurality of evenly distributed annular embedding grooves 631 opened on the outside of the round tube 615 and a trapezoidal block 630 fixed on the outside of the seat block 67 and corresponding to the embedding grooves 631. A through groove 629 connected to the corresponding embedding groove 631 is provided at one end of the inner side of the round tube 615 close to the seat block 67. An L-shaped clamping strip 632 is movably embedded in each embedding groove 631. A plurality of spring telescopic rods are fixedly connected between the inner side of the L-shaped clamping strip 632 and the inner bottom end surface of the embedding groove 631. The spring telescopic rod 633 is composed of a sleeve rod fixedly connected to the L-shaped clamp 632, a sleeve fixedly connected to the inner side of the embedded groove 631, and a straight spring fixedly connected to the L-shaped clamp 632 and the inner side of the embedded groove 631. The sleeve rod and the sleeve are movably sleeved at the opposite ends. The straight spring is sleeved on the outer side of the sleeve to ensure that the L-shaped clamp 632 can only be telescoped along the axial direction of the spring telescopic rod 633. When the spring telescopic rod 633 is in the initial state, the end of the L-shaped clamp 632 away from the spring telescopic rod 633 is in a state of protruding from the embedded groove 631 (such as Fig.13 shown);

[0077] A groove cavity is further provided on the side of the seat block 67 away from the movable seat 616, and a cylinder 636 is fixedly installed on the top of the inner side of the groove cavity. A lifting bar 635 is fixedly connected to the telescopic end of the cylinder 636, and a stop fork 634 is fixedly connected to the bottom of the lifting bar 635 at the position corresponding to each through hole 613, wherein the inner width of the stop fork 635 is equal to the diameter of the nail rod of the rivet but smaller than the diameter of the pipe cap end, so that the movable seat 616 will not drive the pipe cap end to retreat synchronously during the retreat process.

[0078] It should be noted that in Fig.15 In the process of riveting the left and right housings of the circuit breaker shown in the figure, when the left and right housings to be riveted enter the riveting station, and the cylinder 4 66 pushes the housing adsorbed away from the seat block 67 to approach the housing in contact with the seat block 67, the cylinder 5 621 will simultaneously push the push block 622 to move downward, thereby pushing the inclined plate 623 to move downward along the inclined groove 619, and in the process of the inclined plate 623 moving downward, it will simultaneously push the movable seat 616 to move in the direction close to the seat block 67, and use the movable seat 616 to push the round tube 615 to continue to insert into the corresponding through hole 613, and at the same time compress the corresponding spring 1 618;

[0079] When the round tube 615 continues to extend into the corresponding through hole 613, the round tube 615 will first be sleeved on the outside of the nail rod of the rivet, and as the round tube 615 continues to extend, the part protruding from the embedding groove 631 will first contact the trapezoidal block 630, and then the corresponding spring telescopic rod 2 633 will be compressed under the extrusion of the trapezoidal block 630, so that the end of the L-shaped clamping strip 632 away from the movable seat 616 passes through the corresponding through groove 629 and tightly clamps the nail rod of the rivet. Then, under the continued advancement of the round tube 615, the rivet is pushed out from the other through hole 613, and the cap end of the rivet is inserted into the rivet hole on the shell to be riveted. When the two shells to be riveted are tightly fitted under the push of the cylinder 4 66, the movable seat 616 also pushes the round tube 615 under the action of the cylinder 5 621 to complete the rivet clamping and automatic riveting action;

[0080] Then, the cylinder 636 pushes the lifting bar 635 downward, so that the blocking fork 634 is forked on the outside of the nail rod of the rivet to block the pipe cap end of the rivet, and then the cylinder 521 pulls the push block 622 upward, so that the movable seat 616 moves away from the seat block 67, and the round tube 615 that clamps the nail rod of the rivet drives the nail rod to move away from the seat block 67 synchronously, completing the riveting and extracting the nail rod. Finally, while the next round of nail extraction is in progress, the nail rod separated in the previous order is discharged into the collection frame 617 through the discharge hole 628 for collection;

[0081] Before riveting, the rivets need to be placed in the rivet bin 69 in advance, and then the second driving motor is used to drive the rotating column 68 to rotate, so that the brackets 611 on the outside of the rotating column 68 are alternately aligned with the leakage grooves 610, and the rivets in the rivet bin 69 enter the brackets 611. Then, as the rotating column 68 rotates, the rivets in the brackets 611 are arranged in each vertical slot 612 for standby use.

[0082] Example 2

[0083] Refer to the instruction manual Figure 1 and Fig.14 , a riveting device for an electrical control circuit breaker according to an embodiment of the present invention, a marking mechanism 8 is provided at one end of the top of the side plate where the riveting module is installed, the marking mechanism 8 comprises an L-shaped pressing plate 812 fixed to one side of the push block 622 and an L-shaped seat 81 fixed to the top of the side plate where the riveting module is embedded, four vertical rods 82 distributed in a rectangular shape are fixedly provided on the top of the L-shaped seat 81, a lifting plate 83 is movably sleeved between the four vertical rods 82, and a spring 84 for fixing the lifting plate 83 and the L-shaped seat 81 is sleeved on the outer side of each vertical rod 82, a marking machine 85 is fixedly installed at the bottom of the lifting plate 83, and a laser head 86 is installed at the working end of the marking machine 85;

[0084] The working end of the marking machine 85 is also provided with a protective component, which includes a rotating cylinder 87 threadedly connected to the working end of the marking machine 85, a cover cylinder 88 is movably sleeved on the outer side of the rotating cylinder 87, and a spring three 89 is sleeved on the outer side of the rotating cylinder 87 for fixedly connecting the marking machine 85 and the cover cylinder 88, wherein when the spring three 89 is in a natural state, the laser head 86 is in a state of being completely hidden inside the cover cylinder 88, and the top end of the cover cylinder 88 still remains sleeved on the outer side of the rotating cylinder 87, the outer bottom end of the cover cylinder 88 is connected to an air pipe 810, and the outer side of the L-shaped seat 81 is fixedly connected to a holder 811 for fixing the air pipe 810.

[0085] It should be noted that, in the process of riveting the shell to be riveted at the current riveting station, as the push block 622 moves downward, the L-shaped pressure plate 812 will be synchronously driven to move downward, and after the L-shaped pressure plate 812 contacts the lifting plate 83, as the push block 622 continues to move downward, the lifting plate 83 will continue to move downward under the action of the L-shaped pressure plate 812, and push the marking machine 85 to approach the circuit breaker that has been riveted in the previous sequence. When the bottom end of the cover cylinder 88 contacts the upper surface of the circuit breaker that has been riveted in the previous sequence, the marking machine 85 that continues to move downward will cause the cover cylinder 88 to move upward to compress the spring three 89. A pressure sensor (not specifically drawn in the accompanying drawings) can be used here to detect whether the bottom end of the cover cylinder 88 contacts the upper surface of the circuit breaker that has been riveted in the previous sequence, and thereby control whether the laser head 86 starts the marking action, that is, when it is detected that the cover cylinder 88 contacts the upper surface of the circuit breaker that has been riveted in the previous sequence, the laser head 86 is started to mark;

[0086] At the same time, the exhaust end of the air pipe 810 can also be connected to an external exhaust device to extract the smoke and harmful gases generated during the marking process for centralized treatment. In addition, the hood 88 can be used to shield the laser to prevent glare.

[0087] In the above technical scheme, the driving motor mentioned is an AC motor of model Y2-132S-4; the CCD camera 44 mentioned is an industrial CCD camera of model Hikvision MV-CA030-10GM / GC; the cylinder mentioned is a single-acting cylinder of model DSA25N200; the servo motor 415 and the servo motor mentioned are both servo drivers of model JSDL2-10A1; the negative pressure adsorption platform 65 mentioned is a vacuum adsorption platform of model PVT60-50.8; the pressure sensor mentioned is a chip differential pressure sensor of model FSR-A406; the marking machine 85 mentioned is a semiconductor laser marking machine, and the specific selection is made according to actual production.

[0088] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A riveting device for an electrical control circuit breaker, characterized in that: The invention comprises a riveting part and a feeding part located at both sides of one end of the riveting part, wherein the riveting part comprises a bracket (7) and a riveting mechanism (6) installed on the top of the bracket (7), the riveting mechanism (6) comprises a pushing module for intermittently pushing the shell to be riveted and a riveting module for automatically inserting rivets and completing the riveting action, two side plates are fixedly provided on the top of the bracket (7), the pushing module is installed between the two side plates, and the riveting module is installed in the middle of one of the side plates; The feeding part comprises a bracket one (1) fixedly connected to a bracket two (7), a feeding belt (2) being installed at the top of the bracket one (1), a rotation adjustment mechanism (4) for adjusting the direction of the shell to be riveted being fixedly installed at the middle of the top of the bracket one (1), and a discharge mechanism (3) for sequentially placing the shell to be riveted and a flip assembly (5) for standing up the shell to be riveted after position calibration being installed at both ends of the bracket one (1).

2. The riveting device for an electrical control circuit breaker according to claim 1, characterized in that: The discharging mechanism (3) comprises a guide frame (31) fixedly connected to the outside of a bracket (1); three brackets (33) are fixedly connected to the bottom of the guide frame (31); a mounting frame (34) is fixedly connected between the three brackets (33); a turntable (32) is rotatably mounted on the bottom of the inner side of the guide frame (31); and a driving motor (1) for driving the turntable (32) to rotate is fixedly mounted on the inner side of the mounting frame (34).

3. The riveting device for an electrical control circuit breaker according to claim 1, characterized in that: The indexing adjustment mechanism (4) comprises two U-shaped frames (41) fixedly mounted on the top of the bracket (1), a disc (42) is fixedly mounted between the top surfaces of the two U-shaped frames (41), a convex column groove (43) is formed at the bottom of the disc (42), and a CCD camera (44) is fixedly mounted on the top of the inner side of the convex column groove (43); Two arc-shaped supporting plates (45) are fixedly provided at the bottom inner end of the convex column groove (43); arc-shaped recessed grooves (47) are provided at the top of the bracket (1) at positions corresponding to the gap formed between the opposite ends of the two arc-shaped supporting plates (45); clamping assemblies (46) are provided inside the two arc-shaped recessed grooves (47); cylinders (48) for driving the clamping assemblies (46) to move up and down are fixedly provided at positions corresponding to the two arc-shaped recessed grooves (47) at the bottom of the bracket (1); and a power assembly for driving the clamping assemblies (46) to move up and down is provided at the top of the disc (42).

4. The riveting device for an electrical control circuit breaker according to claim 3, characterized in that: The clamping assembly (46) comprises an arc block (461) adapted to the arc-shaped sink groove (47), a rack (462) being fixedly provided on the top of the arc block (461), a receiving groove (464) being provided in the middle of one side of the arc block (461), a cylinder 1 (465) being fixedly installed inside the receiving groove (464), a clamping plate (466) being fixedly connected to the telescopic end of the cylinder 1 (465), a T-shaped arc groove (463) being provided through the bottom of the arc block (461), a T-shaped sliding block being fixedly connected to the telescopic end of the cylinder 2 (48) being slidably installed inside the T-shaped arc groove (463), and clamps being fixedly provided at both ends of the rack (462).

5. The riveting device for an electrical control circuit breaker according to claim 4, characterized in that: The power assembly comprises a cross ring groove (49) formed inside the convex column groove (43), two cross arc bars (410) corresponding to the arc-shaped support plates (45) are slidably connected inside the cross ring groove (49), a tooth groove (412) is formed at the top of the cross arc bar (410), and both ends of the cross arc bar (410) are formed with a clamping groove (411) adapted to the clamping head; The power assembly also includes a through groove (413) opened at the top of the disc (42) and connected to the cross ring groove (49), and a servo motor (415) fixedly mounted on the top of the disc (42), wherein the end of the output shaft of the servo motor (415) is fixedly connected to a gear (414) meshing with the tooth groove (412) at the top of the cross arc bar (410).

6. The riveting device for an electrical control circuit breaker according to claim 1, characterized in that: The flip assembly (5) comprises a notch (51) penetrating the second bracket (7) and the corresponding side plate, a flip seat (52) is rotatably mounted on the inner side of the notch (51) at the position where the second bracket (7) and the side plate meet, the flip seat (52) comprising a roller and four L-shaped flaps evenly distributed in an annular shape fixed on the outer side of the roller, and a servo motor for driving the corresponding roller to rotate is fixedly mounted on the outer side of the second bracket (7).

7. The riveting device for an electrical control circuit breaker according to claim 1, characterized in that: The pusher module comprises a mounting plate (61) fixed between opposite sides of one end of two side plates and a pusher plate (63) located on one side of the side plate, a cylinder three (62) is fixedly mounted in the middle of the other side of the mounting plate (61), the telescopic end of the cylinder three (62) movably passes through the mounting plate (61) and is fixedly connected to the pusher plate (63), and an anti-dumping assembly (64) is installed on the opposite sides of one end of the two side plates close to the bracket one (1); The anti-dumping assembly (64) comprises an L-shaped plate (641) fixed at the inner top edge of the corresponding side plate, a baffle (642) is provided on the inner side of the L-shaped plate (641), and a spring telescopic rod (643) is fixedly connected between the baffle (642) and the inner wall of the L-shaped plate (641); The pushing module also includes a groove opened in the middle of the inner side of the side plate away from the riveting module, and a negative pressure adsorption platform (65) is arranged inside the groove. A cylinder four (66) is fixedly installed on the outer side of the side plate where the groove is opened, and the telescopic end of the cylinder four (66) movably passes through the corresponding side plate and is fixedly connected to the negative pressure adsorption platform (65).

8. The riveting device for an electrical control circuit breaker according to claim 1, characterized in that: The riveting module comprises a seat block (67) fixedly embedded in the middle of the corresponding side plate, a mounting column slot is provided through the middle of the seat block (67), a rotating column (68) is rotatably installed inside the mounting column slot, and a driving motor 2 for driving the rotating column (68) to rotate is fixedly installed on one side of the seat block (67); A plurality of evenly distributed brackets (611) are provided in the middle of the outer side of the rotating column (68); a rivet bin (69) is provided at the top of the seat block (67); a drain groove (610) connected to the mounting column groove is provided at the bottom of the rivet bin (69); a plurality of vertical grooves (612) connected to the mounting column groove are provided at the bottom of the seat block (67); through holes (613) are provided on both sides of the bottom of each vertical groove (612); and a U-shaped bracket (614) is fixedly provided at the middle of the inner bottom of each vertical groove (612).

9. The riveting device for an electrical control circuit breaker according to claim 8, characterized in that: The riveting module also includes a support platform (626) fixed on the outside of the bracket (7) and a fixed plate (620) fixed on the outside of the seat block (67); a fixed seat is fixedly provided on the top of the support platform (626); a movable seat (616) is overlapped on the top of the fixed seat; a discharge hole (628) is penetrated and opened at a position corresponding to each through hole (613) on one side of the movable seat (616); and a round tube (615) movably plugged into the corresponding through hole (613) is fixedly connected to the position of each discharge hole (628) on the outside of the movable seat (616); and a spring (618) for fixedly connecting the seat block (67) and the movable seat (616) is sleeved on the outside of each round tube (615); The bottom of the fixed plate (620) is fixedly mounted with a cylinder five (621), the telescopic end of the cylinder five (621) is fixedly connected with a push block (622), the bottom of the push block (622) is fixedly connected with an inclined plate (623), and the top of the movable seat (616) is penetrated with an inclined groove (619); A slot (624) is provided on a side of the movable seat (616) away from the seat block (67), a collection frame (617) is movably inserted into the slot (624), and a limit clamp (627) for clamping the collection frame (617) is provided between the collection frame (617) and the movable seat (616), and a support plate (625) that fits the support platform (626) is fixedly provided at one end of the bottom of the collection frame (617) away from the movable seat (616); A rivet clamping assembly is provided at a position corresponding to each circular tube (615) between the movable seat (616) and the seat block (67), and the rivet clamping assembly includes a plurality of evenly distributed annular embedding grooves (631) opened on the outer side of the circular tube (615) and a trapezoidal block (630) fixed on the outer side of the seat block (67) and corresponding to the embedding grooves (631); a through groove (629) connected to the corresponding embedding groove (631) is provided at one end of the inner side of the circular tube (615) close to the seat block (67); an L-shaped clamping strip (632) is movably embedded in each embedding groove (631); and a plurality of spring telescopic rods (633) are fixedly connected between the inner side of the L-shaped clamping strip (632) and the inner bottom end surface of the embedding groove (631); A groove cavity is also provided on one side of the seat block (67) away from the movable seat (616), and a cylinder six (636) is fixedly installed on the top of the inner side of the groove cavity. The telescopic end of the cylinder six (636) is fixedly connected to a lifting bar (635), and a stop fork (634) is fixedly connected to the bottom of the lifting bar (635) at a position corresponding to each through hole (613).

10. The riveting device for an electrical control circuit breaker according to claim 9, characterized in that: A marking mechanism (8) is provided at one end of the top of the side plate on which the riveting module is installed. The marking mechanism (8) comprises an L-shaped pressing plate (812) fixed to one side of the push block (622) and an L-shaped seat (81) fixed to the top of the side plate on which the riveting module is embedded. Four vertical rods (82) distributed in a rectangular shape are fixedly provided on the top of the L-shaped seat (81). A lifting plate (83) is movably sleeved between the four vertical rods (82). A spring (84) for fixing the lifting plate (83) and the L-shaped seat (81) is sleeved on the outer side of each vertical rod (82). A marking machine (85) is fixedly installed at the bottom of the lifting plate (83). A laser head (86) is installed at the working end of the marking machine (85); The working end of the marking machine (85) is also provided with a protection assembly, which includes a rotating cylinder (87) threadedly connected to the working end of the marking machine (85), a cover cylinder (88) movably sleeved on the outer side of the rotating cylinder (87), and a spring three (89) for fixedly connecting the marking machine (85) and the cover cylinder (88) is sleeved on the outer side of the rotating cylinder (87), an air pipe (810) is connected to the outer bottom end of the cover cylinder (88), and a clamping seat (811) for fixing the air pipe (810) is fixedly connected to the outer side of the L-shaped seat (81).

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