Automatic assembling device for flange machining

Abstract

The invention relates to the technical field of industrial robots, and discloses an automatic assembly device for flange machining, comprising a plurality of calibration mechanisms arranged on a first flange; the calibration mechanism comprises a clamp, an air pump is arranged at the upper end of the clamp, an air hole is formed in the lower end of the clamp, the air hole is communicated with one bolt hole in the first flange, two pressure relief holes are symmetrically formed in the air hole, and a first valve assembly and a second valve assembly are arranged in the two pressure relief holes; when the bolt holes in the first flange and the bolt holes in the second flange are not aligned, airflow sprayed out by the air pump is controlled to be sprayed out from one of the pressure relief holes. According to the automatic assembling device for flange machining, dislocation of flange bolt holes is automatically detected through air pressure changes with blocked airflow, the flange is driven to rotate forwards and backwards by switching the tangential air injection direction, and automatic alignment and intelligent compensation of inertia overshoot are achieved.

Description

Technical Field

[0001] This invention relates to the field of industrial robot technology, specifically to an automatic assembly device for flange processing. Background Technology

[0002] Flanges are crucial connecting components in pipelines, pressure vessels, and heavy equipment; their assembly quality directly affects the sealing performance, safety, and long-term operational reliability of the entire system. This is especially true in industrial assembly, particularly for the connection of large flanges (such as those used in wind turbine towers, chemical pipelines, and ship propulsion shafting).

[0003] Currently, the assembly of large flanges mainly relies on the cooperation of hoisting equipment (such as overhead cranes) and manual labor. The operation process is usually as follows: the upper flange is lifted onto the fixed flange using a lifting tool, roughly aligned, and then lowered to fit. After that, the worker needs to manually rotate the first flange or use tools such as pry bars for fine adjustment to ensure that the bolt holes on both flanges are completely aligned before the bolts can be inserted and tightened.

[0004] This method has significant limitations: First, manual visual inspection and adjustment are inefficient and labor-intensive, especially in space-constrained or harsh environments. Second, for heavy flanges, their large inertia makes fine-tuning laborious and difficult to control precisely, easily leading to overshoot due to excessive adjustment, requiring repeated reverse adjustments and extending the assembly cycle. Summary of the Invention

[0005] This invention provides an automatic assembly device for flange processing, which has the beneficial effects of automatically detecting flange bolt hole misalignment by utilizing air pressure changes due to airflow obstruction, and driving the flange to rotate in both directions by switching the tangential jet direction, thereby achieving automatic alignment and intelligent compensation for inertial overshoot, and solving the problems mentioned in the background art.

[0006] The present invention provides the following technical solution: an automatic assembly device for flange processing, used to assemble a first flange and a second flange, wherein both the first flange and the second flange are provided with a plurality of bolt holes in the circumferential direction, and the automatic assembly device for flange processing includes a plurality of calibration mechanisms disposed on the first flange. The calibration mechanism includes a clamp, an air pump is provided at the upper end of the clamp, and an air hole is provided at the lower end of the clamp. The air hole is connected to one of the bolt holes on the first flange. Two pressure relief holes are symmetrically provided in the air hole, and a first valve assembly and a second valve assembly are provided in each of the two pressure relief holes. When the bolt holes on the first flange and the second flange are not aligned, the airflow ejected from the air pump is controlled to be ejected from one of the pressure relief holes, thereby driving the first flange to rotate clockwise or counterclockwise, so that the bolt holes on the first flange and the second flange are aligned.

[0007] As an optional embodiment of the automatic assembly device for flange processing described in this invention, the fixture is further provided with a first triggering mechanism and a second triggering mechanism. Airflow is injected into the air hole by the air pump. When the bolt holes on the first flange and the second flange are not aligned, the first triggering mechanism increases the air pressure in the air hole to drive the two first valve assemblies to open synchronously. At this time, the two second valve assemblies are in the open and closed states respectively, so that the airflow is ejected from one of the pressure relief holes to drive the first flange to rotate and align the bolt holes on the first flange and the second flange. When the bolt holes on the first flange and the second flange are misaligned again due to rotational inertia, the second triggering mechanism controls the opening / closing state switching of the two second valve assemblies, thereby causing airflow to be ejected from the other pressure relief hole to drive the first flange to rotate in the opposite direction, so that the bolt holes on the first flange and the second flange are aligned again.

[0008] As an optional embodiment of the automatic assembly device for flange processing according to the present invention, the first valve assembly includes a first valve groove opened in the pressure relief hole, and a first valve plate is slidably disposed in the first valve groove; the second valve assembly includes a second valve groove opened in the pressure relief hole, and a second valve plate is slidably disposed in the second valve groove.

[0009] As an optional embodiment of the automatic assembly device for flange processing described in this invention, the first triggering mechanism includes a valve core and a valve stem disposed in the air hole, and both first valve plates are connected to the valve stem; A valve seat is slidably disposed inside the air hole, and the valve stem is elastically connected to the valve seat through a first spring. An adjusting seat is also threadedly connected to the clamp, and the valve seat is rotatably connected to the adjusting seat.

[0010] As an optional embodiment of the automatic assembly device for flange processing described in this invention, the second triggering mechanism includes a slide and two connecting rods. The slide is slidably disposed on the fixture. Two first connecting seats are symmetrically disposed on the slide. Two second connecting seats are disposed on each of the two second valve plates. One end of each of the two connecting rods is movably hinged to the two first connecting seats via hinge shafts, and the other end of each of the two connecting rods is movably hinged to the two second connecting seats via hinge shafts.

[0011] As an optional embodiment of the automatic assembly device for flange processing described in this invention, the second triggering mechanism further includes a one-way drive assembly, through which the valve stem pushes the sliding seat to move. The one-way drive assembly includes a push rod disposed on the valve stem, the push rod having two symmetrically arranged first ramps, a rotating shaft rotatably disposed on the slide, a rotating rod disposed on the rotating shaft, the rotating rod having two symmetrically arranged second ramps, a baffle disposed on the slide, and the rotating rod being elastically connected to the slide via a second spring.

[0012] As an optional embodiment of the automatic assembly device for flange processing described in this invention, the second triggering mechanism further includes a self-locking component, which includes a guide groove and a guide rod. The guide groove is formed on the slide, one end of the guide rod is rotatably connected to the clamp, and the other end of the guide rod is slidably connected to the guide groove. The slide is elastically connected to the clamp via a third spring.

[0013] As an optional embodiment of the automatic assembly device for flange processing according to the present invention, the guide groove includes a first guide section, a second guide section, a third guide section, an inclined groove, and a straight groove. The depth of the first guide section and the second guide section is greater than that of the third guide section. The second guide section and the third guide section are connected through the inclined groove, and the third guide section and the first guide section are connected through the straight groove.

[0014] As an optional embodiment of the automatic assembly device for flange processing described in this invention, it further includes a lifting mechanism, which includes a mounting base, a guide rail on the mounting base, a slider slidably mounted on the guide rail, a lifting seat on the slider, a lifting rod rotatably mounted on the lifting seat, and an automatic chuck on the lifting rod. Several jaws of the automatic chuck are respectively connected to several of the clamps.

[0015] As an optional embodiment of the automatic assembly device for flange processing described in this invention, the mounting base is provided with a motor and a lead screw, the output shaft of the motor is connected to the lead screw, the lifting base is provided with a lead screw nut, and the lead screw nut is threadedly connected to the lead screw.

[0016] The present invention has the following beneficial effects:

[0017] 1. This automatic assembly device for flange processing achieves integrated automatic alignment of detection, judgment, and drive: The device innovatively combines air pressure sensing with pneumatic drive. When the air pump supplies air to the air hole, if the bolt holes of the first and second flanges are not aligned, the airflow is obstructed, causing the pressure inside the air hole to rise. This pressure signal directly acts on the valve stem of the first trigger mechanism, causing it to move and open the corresponding first valve assembly, allowing the high-pressure airflow to be ejected tangentially from the pre-set pressure relief hole. The reaction force of the air jet drives the first flange to rotate. The entire process requires no external sensors or electronic control system intervention, achieving fully automatic closed-loop control from "detecting misalignment" to "executing rotation," significantly improving assembly efficiency and accuracy.

[0018] 2. This automatic assembly device for flange processing possesses intelligent correction capabilities, effectively suppressing inertial overshoot and achieving rapid and stable alignment. Addressing the challenge of large rotational inertia and easy over-adjustment of heavy flanges, the device features a cleverly designed second triggering mechanism and self-locking components. When the first flange rotation is initially driven by air jets, briefly aligning the bolt holes, the air pressure in the vent drops, and the valve stem resets under the action of the first spring. This reset is achieved by a unidirectional drive component, such as a push rod and a ramp, which move the slide by one step. The slide, linked by a connecting rod, switches the opening and closing states of the second valve plates in the two second valve assemblies. If the flange continues to rotate due to inertia and becomes misaligned again, the next trigger will cause airflow to be ejected from another pressure relief hole, driving the flange to rotate in the opposite direction. This mechanism, based on automatic switching of drive direction due to air pressure changes, allows the flange to quickly stabilize at a precise alignment position after several decreasing amplitude swings, like a pendulum, perfectly solving the problem of inertial overshoot.

[0019] 3. This automatic assembly device for flange processing features a compact structure, high reliability, and adaptability to industrial environments. The entire alignment module is integrated into the fixture, and the flange is simultaneously lifted by the automatic chuck of the lifting mechanism, eliminating the need to modify existing flanges or workbenches. The control core consists entirely of mechanical components such as valve plates, springs, slides, guide grooves, and pneumatic elements, without any precision electronic components. This purely pneumatic-mechanical design offers strong anti-interference capabilities and resistance to oil, dust, and vibration, making it ideal for use in harsh industrial environments. Furthermore, the adjusting seat in the first triggering mechanism allows for flexible setting of the trigger air pressure threshold, adapting to different working conditions and offering good versatility. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is an exploded structural diagram of the first flange and the second flange in this invention.

[0022] Figure 3 This is a schematic diagram of the first cross-sectional structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the second cross-sectional structure of the present invention.

[0024] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0025] Figure 6 This is an exploded structural diagram of the calibration mechanism in this invention.

[0026] Figure 7 This is a schematic diagram of the explosion structure of the first triggering mechanism in this invention.

[0027] Figure 8 This is a schematic diagram of the explosion structure of the second triggering mechanism in this invention.

[0028] Figure 9 This is a schematic diagram of the slide block in this invention.

[0029] Figure 10 This is an exploded structural diagram of the lifting mechanism in this invention.

[0030] Figure 11 This is a schematic diagram illustrating the working principle of the self-locking component in this invention.

[0031] In the diagram: 100, First flange; 110, Second flange; 120, Bolt hole; 130, Pipeline; 200, Calibration mechanism; 210, Fixture; 220, Air pump; 230, Air port; 240, Pressure relief hole; 250, First valve assembly; 251, First valve groove; 252, First valve plate; 260, Second valve assembly; 261, Second valve groove; 262, Second valve plate; 270, Flow meter; 280, Sealing ring; 300, First triggering mechanism; 310, Valve core; 320, Valve stem; 330, Valve seat; 340, First spring; 350, Adjusting seat; 400, Second triggering mechanism; 410, Slide; 420, Connecting rod; 430, First connecting seat; 4 40. Second connecting seat; 450. One-way drive assembly; 451. Push rod; 452. First ramp; 453. Rotating shaft; 454. Rotating rod; 455. Second ramp; 456. Baffle; 457. Second spring; 460. Self-locking assembly; 461. Guide groove; 4611. First guide section; 4612. Second guide section; 4613. Third guide section; 4614. Inclined groove; 4615. Straight groove; 462. Guide rod; 463. Third spring; 500. Lifting mechanism; 510. Mounting seat; 520. Guide rail; 530. Slider; 540. Lifting seat; 550. Lifting rod; 560. Automatic chuck; 570. Motor; 580. Lead screw; 590. Nut. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1, please refer to Figures 1-10 An automatic assembly device for flange processing includes a plurality of calibration mechanisms 200 disposed on a first flange 100 for assembling the first flange 100 and a second flange 110. Both the first flange 100 and the second flange 110 are provided with a plurality of bolt holes 120 circumferentially.

[0034] The calibration mechanism 200 includes a clamp 210, an air pump 220 is provided at the upper end of the clamp 210, and an air hole 230 is provided at the lower end of the clamp 210. The air hole 230 is connected to one of the bolt holes 120 on the first flange 100. Two pressure relief holes 240 are symmetrically provided in the air hole 230. A first valve assembly 250 and a second valve assembly 260 are provided in each of the two pressure relief holes 240. A flow meter 270 and a sealing ring 280 are provided in the air hole 230.

[0035] The fixture 210 is also equipped with a first triggering mechanism 300 and a second triggering mechanism 400. Air is injected into the air hole 230 by the air pump 220. When the bolt holes 120 on the first flange 100 and the second flange 110 are not aligned, the first triggering mechanism 300 increases the air pressure in the air hole 230 to drive the two first valve assemblies 250 to open synchronously. At this time, the two second valve assemblies 260 are in the open and closed states respectively, so that the air is ejected from one of the pressure relief holes 240 to drive the first flange 100 to rotate and align the bolt holes 120 on the first flange 100 and the second flange 110.

[0036] When the bolt holes 120 on the first flange 100 and the second flange 110 are misaligned again due to rotational inertia, the second triggering mechanism 400 controls the opening / closing state switching of the two second valve assemblies 260, thereby causing airflow to be ejected from another pressure relief hole 240 to drive the first flange 100 to rotate in the opposite direction, so that the bolt holes 120 on the first flange 100 and the second flange 110 are aligned again.

[0037] It also includes a lifting mechanism 500, which includes a mounting base 510, a guide rail 520 on the mounting base 510, a slider 530 slidably mounted on the guide rail 520, a lifting seat 540 on the slider 530, a lifting rod 550 rotatably mounted on the lifting seat 540, and an automatic chuck 560 on the lifting rod 550. Several jaws of the automatic chuck 560 are respectively connected to several clamps 210.

[0038] The mounting base 510 is equipped with a motor 570 and a lead screw 580. The output shaft of the motor 570 is connected to the lead screw 580. The lifting base 540 is equipped with a nut 590, which is threadedly connected to the lead screw 580.

[0039] In this embodiment, the structures of the first flange 100 and the second flange 110 are completely identical. The position of the second flange 110 is fixed, such as when it is installed on the pipe 130. For large flange assembly, a lifting tool is usually used to lift the first flange 100 onto the upper end of the second flange 110, and then the upper and lower bolt holes 120 are connected by bolts.

[0040] First, the lifting mechanism 500 is used to align the first flange 100 with the second flange 110 and lower it. The automatic chuck 560 can be a pneumatic three-jaw chuck, whose three jaws move synchronously radially based on the center of the automatic chuck 560. The three jaws are connected to three clamps 210 respectively. The radial movement of the three jaws drives the three clamps 210 to clamp the first flange 100. Before clamping, pay attention to the alignment of the air hole 230 on the clamp 210 and the bolt hole 120 on the first flange 100.

[0041] Mounting base 510 can be installed on a lifting device or a crane. The crane's movement in the forward / backward and left / right directions aligns the first flange 100 with the second flange 110. Then, motor 570 drives screw 580 to rotate, causing screw nut 590 and lifting seat 540 to descend. Lifting seat 540 then lowers the boom 550, automatic chuck 560, and first flange 100. During this lifting process, slider 530 slides along guide rail 520, acting as a limit switch. The positions of the first flange 100 and automatic chuck 560, which rest on the second flange 110, are fixed, but they can rotate in place based on boom 550.

[0042] The automatic alignment of the bolt holes 120 on the upper and lower sides is achieved using a pneumatic drive principle. Three calibration mechanisms 200 are configured, arranged in a circular array based on three jaws. One set of bolt holes 120 on the first flange 100 and the calibration mechanism 200 installed at these bolt holes 120 are positioned on the right side as shown in the figure. The two pressure relief holes 240 within this calibration mechanism 200 are distributed in a front-to-back direction.

[0043] Take the calibration mechanism 200 located on the right as an example. Air is injected downwards into the air hole 230 at a constant flow rate by an air pump 220. If the bolt holes 120 on the first flange 100 are aligned with the bolt holes 120 on the second flange 110, the air will pass through the two bolt holes 120 and be ejected to the outside. At this time, the air pressure in the air hole 230 is relatively low.

[0044] If the upper and lower bolt holes 120 are not aligned, the airflow will be obstructed because the vent 230 and the upper bolt hole 120 are located below the disc surface of the second flange 110, causing an increase in air pressure inside the vent 230. This increased air pressure triggers the airflow to exit from the pressure relief hole 240 located at the rear. The airflow continues to exit tangentially along the first flange 100, causing the first flange 100 to experience a counterforce, resulting in clockwise rotation. During this rotation, the upper and lower bolt holes 120 will automatically align.

[0045] Furthermore, considering the size and mass of the first flange 100, any attempt to push it for calibration could cause it to over-rotate due to inertia. At this point, the upper and lower bolt holes 120 will misalign again, and the air pressure in the vent 230 will first increase, then decrease, and then increase again. The driving airflow will then be ejected from the pressure relief hole 240 located at the front, causing the first flange 100 to rotate counterclockwise for recalibration. During the first clockwise rotation, if the arc between the two bolt holes 120 is large, the air jet time will be long, and the pushing force on the first flange 100 will be large. During the second counterclockwise rotation, the pushing force and inertia will decrease. By repeatedly controlling the clockwise / counterclockwise rotation of the first flange 100, after two or more calibrations, the first flange 100 and the second flange 110 will be nearly perfectly aligned. Subsequent bolt installation by workers will require little or no effort to adjust, or only minor adjustments.

[0046] Example 2, please refer to Figures 1-6 The first valve assembly 250 includes a first valve groove 251 opened in the pressure relief hole 240, and a first valve plate 252 is slidably disposed in the first valve groove 251. The second valve assembly 260 includes a second valve groove 261 opened in the pressure relief hole 240, and a second valve plate 262 is slidably disposed in the second valve groove 261.

[0047] The first triggering mechanism 300 includes a valve core 310 and a valve stem 320 disposed in the air hole 230, and both first valve plates 252 are connected to the valve stem 320.

[0048] A valve seat 330 is slidably disposed inside the air hole 230. The valve stem 320 is elastically connected to the valve seat 330 through the first spring 340. An adjusting seat 350 is also threadedly connected to the clamp 210. The valve seat 330 is rotatably connected to the adjusting seat 350.

[0049] In this embodiment, a first triggering mechanism 300 is provided to allow airflow to be ejected from one of the pressure relief holes 240 when the air pressure inside the drive vent 230 increases. Specifically, in the initial state, both first valve slots 251 are blocked by both first valve plates 252, while the second valve plate 262 located on the rear side does not block the second valve slot 261, and the second valve plate 262 located on the front side blocks the second valve slot 261. That is, both first valve assemblies 250 are closed, while the second valve assembly 260 located on the front side is closed, and the second valve assembly 260 located on the rear side is open. The valve stem 320 is also blocked by the elastic force of the first spring 340, which blocks the valve core 310.

[0050] When the vent 230 aligns with the lower bolt hole 120, the airflow is ejected downwards to the outside. At this time, the air pressure at the valve core 310 is relatively low and insufficient to push the valve stem 320. When the lower side of the vent 230 is completely or partially blocked by the disc of the second flange 110, the air pressure inside the vent 230 increases due to the obstruction of the airflow passage. The increased pressure on the valve stem 320 pushes it to the left. At this time, the valve stem 320 will drive the two first valve plates 252 to move to the left, opening the two first valve assemblies 250, and the airflow will be ejected from the rear pressure relief hole 240. Until the vent 230 aligns with the lower bolt hole 120, the pressure on the valve stem 320 to the left decreases, and the valve stem 320 returns to its original position under the elastic force of the first spring 340, causing the two first valve assemblies 250 to close again.

[0051] The initial position of the valve seat 330 can be adjusted by adjusting the adjusting seat 350. By turning the adjusting seat 350 clockwise or counterclockwise along the thread, the valve seat 330 can be moved left or right, which in turn changes the initial compression state of the first spring 340, thereby adjusting the specific air pressure value when the trigger valve stem 320 moves to the left.

[0052] In addition, a flow meter 270 installed on the side wall of the vent 230 is used to monitor changes in the air pressure inside the vent 230. When the vent 230 is aligned with the bolt hole 120 on the lower side, the air pressure inside the vent 230 is relatively constant, and the air pump 220 can be turned off. The sealing ring 280 is used to strengthen the seal between the vent 230 and the bolt hole 120 on the upper side.

[0053] Example 3, please refer to Figures 1-9 The second triggering mechanism 400 includes a slide 410 and two connecting rods 420. The slide 410 is slidably mounted on the clamp 210. Two first connecting seats 430 are symmetrically arranged on the slide 410. Two second connecting seats 440 are arranged on each of the two second valve plates 262. One end of each of the two connecting rods 420 is movably hinged to the two first connecting seats 430 via hinge pins. The other end of each of the two connecting rods 420 is movably hinged to the two second connecting seats 440 via hinge pins.

[0054] The second triggering mechanism 400 also includes a one-way drive assembly 450, through which the valve stem 320 pushes the slide block 410 to move.

[0055] The one-way drive assembly 450 includes a push rod 451 mounted on the valve stem 320. Two first ramps 452 are symmetrically provided on the push rod 451. A rotating shaft 453 is rotatably mounted on the slide block 410. A rotating rod 454 is mounted on the rotating shaft 453. Two second ramps 455 are symmetrically provided on the rotating rod 454. A baffle 456 is provided on the slide block 410. The rotating rod 454 is elastically connected to the slide block 410 through a second spring 457.

[0056] The second triggering mechanism 400 also includes a self-locking component 460, which includes a guide groove 461 and a guide rod 462. The guide groove 461 is formed on the slide 410. One end of the guide rod 462 is rotatably connected to the clamp 210, and the other end of the guide rod 462 is slidably connected to the guide groove 461. The slide 410 is elastically connected to the clamp 210 through a third spring 463.

[0057] In this embodiment, a second triggering mechanism 400 is provided to control the airflow from one pressure relief hole 240 to be ejected from the other pressure relief hole 240 each time.

[0058] The slide block 410 slides in the front-back direction. In the initial state, the slide block 410 is close to the front side, so that the second valve plate 262 on the front side blocks the second valve groove 261 on the front side, while the second valve plate 262 on the rear side does not block the second valve groove 261 on the rear side.

[0059] When valve stem 320 is driven to the left by air pressure, such as Figure 7 As shown, as the valve stem 320 moves to the left, the first ramp 452 on the left side of the push rod 451 contacts the second ramp 455 on the right side of the rotating rod 454. At this time, the push rod 451 pushes the rotating rod 454 to rotate clockwise based on the pivot 453, while the slide block 410 itself is not pushed. After both first ramps 452 have passed the rotating rod 454, the rotating rod 454 rotates counterclockwise to reset under the force of the second spring 457.

[0060] When the first flange 100 rotates clockwise for the first time, temporarily aligning the two bolt holes 120, the valve stem 320 experiences a decrease in air pressure and returns to its original position to the right. At this time, the push rod 451 moves to the right along with the valve stem 320, and the first ramp 452 on the right side of the push rod 451 contacts the second ramp 455 on the left side of the rotating rod 454. Since the rotating rod 454 is blocked by the baffle 456, it cannot continue to rotate counterclockwise. At this time, the rightward movement of the push rod 451 will push the rotating rod 454 and the slide block 410 to move backward.

[0061] The slide 410 moves backward, driven by the two connecting rods 420, causing the front second valve plate 262 to move to the left, opening the front second valve assembly 260, and the rear second valve plate 262 to move to the right, blocking the rear second valve assembly 260.

[0062] Due to the self-locking component 460, the slide block 410 will be fixed and unable to move forward when it moves backward for the first time. When the push rod 451 moves back to the left and then to the right, the first ramp 452 on the right side of the push rod 451 can still contact the second ramp 455 on the left side of the rotating rod 454, pushing the slide block 410 backward again.

[0063] Example 4, please refer to Figures 1-11 The guide groove 461 includes a first guide section 4611, a second guide section 4612, a third guide section 4613, an inclined groove 4614, and a straight groove 4615. The depth of the first guide section 4611 and the second guide section 4612 is greater than that of the third guide section 4613. The second guide section 4612 and the third guide section 4613 are connected through the inclined groove 4614, and the third guide section 4613 and the first guide section 4611 are connected through the straight groove 4615.

[0064] In this embodiment: In order to control the slide 410 to be fixed in its current position each time it is pushed by the push rod 451, a self-locking component 460 is provided, which adopts the principle of an existing self-locking switch.

[0065] like Figure 11 As shown, the slide 410 is initially in the leftmost position, at which point the slide 410 is not under any force, and one end of the guide rod 462 is fixed in the first guide section 4611. The slide 410 is in the front position overall.

[0066] When the slide block 410 is pushed backward for the first time, due to the height difference between the first guide section 4611, the second guide section 4612, and the third guide section 4613, one end of the guide rod 462 moves along the primary path shown in the diagram. First, it moves from the first guide section 4611 at the same height into the second guide section 4612. Then, it follows the secondary path shown in the diagram, first passing through the inclined groove 4614 to raise its height, and then reaching the "∧" position of the third guide section 4613, where the guide rod 462 is hooked and fixed. At this time, the slide block 410 is fixed to the rear side.

[0067] When the slide block 410 is pushed backward again from its current position for the second time, one end of the guide rod 462 travels through three paths as shown in the diagram, first descending from the straight groove 4615, and then returning to its initial position within the first guide section 4611. This fixes the slide block 410 to the front side.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0069] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic assembly device for flange processing, used to assemble a first flange (100) and a second flange (110), characterized in that: Both the first flange (100) and the second flange (110) are provided with a plurality of bolt holes (120) in the circumferential direction. The automatic assembly device for flange processing includes a plurality of calibration mechanisms (200) provided on the first flange (100). The calibration mechanism (200) includes a clamp (210), an air pump (220) is provided at the upper end of the clamp (210), and an air hole (230) is provided at the lower end of the clamp (210). The air hole (230) is connected to one of the bolt holes (120) on the first flange (100). Two pressure relief holes (240) are symmetrically provided in the air hole (230). A first valve assembly (250) and a second valve assembly (260) are provided in each of the two pressure relief holes (240). When the bolt holes (120) on the first flange (100) and the second flange (110) are not aligned, the airflow ejected by the air pump (220) is controlled to be ejected from one of the pressure relief holes (240), thereby driving the first flange (100) to rotate clockwise or counterclockwise, so that the bolt holes (120) on the first flange (100) and the second flange (110) are aligned.

2. The automatic assembly device for flange processing according to claim 1, characterized in that: The clamp (210) is also provided with a first triggering mechanism (300) and a second triggering mechanism (400). The air pump (220) sprays air into the air hole (230). When the bolt holes (120) on the first flange (100) and the second flange (110) are not aligned, the first triggering mechanism (300) increases the air pressure in the air hole (230) to drive the two first valve assemblies (250) to open synchronously. At this time, the two second valve assemblies (260) are in the open and closed states respectively, so that the airflow is sprayed out from one of the pressure relief holes (240) to drive the first flange (100) to rotate and align the bolt holes (120) on the first flange (100) and the second flange (110). When the bolt holes (120) on the first flange (100) and the second flange (110) are misaligned again due to the rotational inertia of the first flange (100), the second triggering mechanism (400) controls the opening / closing state switching of the two second valve assemblies (260), thereby causing the airflow to be ejected from the other pressure relief hole (240) to drive the first flange (100) to rotate in the opposite direction, so that the bolt holes (120) on the first flange (100) and the second flange (110) are aligned again.

3. The automatic assembly device for flange processing according to claim 2, characterized in that: The first valve assembly (250) includes a first valve groove (251) opened in the pressure relief hole (240), and a first valve plate (252) is slidably disposed in the first valve groove (251). The second valve assembly (260) includes a second valve groove (261) opened in the pressure relief hole (240), and a second valve plate (262) is slidably disposed in the second valve groove (261).

4. The automatic assembly device for flange processing according to claim 3, characterized in that: The first triggering mechanism (300) includes a valve core (310) and a valve stem (320) disposed in the air hole (230), and both first valve plates (252) are connected to the valve stem (320); A valve seat (330) is slidably disposed inside the air hole (230). The valve stem (320) is elastically connected to the valve seat (330) through a first spring (340). An adjusting seat (350) is also threadedly connected to the clamp (210). The valve seat (330) is rotatably connected to the adjusting seat (350).

5. The automatic assembly device for flange processing according to claim 4, characterized in that: The second triggering mechanism (400) includes a slide (410) and two connecting rods (420). The slide (410) is slidably disposed on the clamp (210). Two first connecting seats (430) are symmetrically disposed on the slide (410). Two second connecting seats (440) are disposed on each of the two second valve plates (262). One end of each of the two connecting rods (420) is movably hinged to the two first connecting seats (430) through a hinge shaft. The other end of each of the two connecting rods (420) is movably hinged to the two second connecting seats (440) through a hinge shaft.

6. The automatic assembly device for flange processing according to claim 5, characterized in that: The second triggering mechanism (400) further includes a one-way drive assembly (450), through which the valve stem (320) pushes the slide (410) to displacement; The one-way drive assembly (450) includes a push rod (451) disposed on the valve stem (320), two first ramps (452) symmetrically provided on the push rod (451), a rotating shaft (453) rotatably provided on the slide (410), a rotating rod (454) disposed on the rotating shaft (453), two second ramps (455) symmetrically provided on the rotating rod (454), a baffle (456) disposed on the slide (410), and the rotating rod (454) elastically connected to the slide (410) through a second spring (457).

7. An automatic assembly device for flange processing according to claim 5, characterized in that: The second triggering mechanism (400) further includes a self-locking component (460), which includes a guide groove (461) and a guide rod (462). The guide groove (461) is formed on the slide (410). One end of the guide rod (462) is rotatably connected to the clamp (210), and the other end of the guide rod (462) is slidably connected to the guide groove (461). The slide (410) is elastically connected to the clamp (210) through a third spring (463).

8. An automatic assembly device for flange processing according to claim 7, characterized in that: The guide groove (461) includes a first guide section (4611), a second guide section (4612), a third guide section (4613), an inclined groove (4614), and a straight groove (4615). The depth of the first guide section (4611) and the second guide section (4612) is greater than that of the third guide section (4613). The second guide section (4612) and the third guide section (4613) are connected through the inclined groove (4614), and the third guide section (4613) and the first guide section (4611) are connected through the straight groove (4615).

9. An automatic assembly device for flange processing according to claim 1, characterized in that: It also includes a lifting mechanism (500), which includes a mounting base (510), a guide rail (520) on the mounting base (510), a slider (530) slidably mounted on the guide rail (520), a lifting seat (540) on the slider (530), a lifting rod (550) rotatably mounted on the lifting seat (540), and an automatic chuck (560) on the lifting rod (550). Several jaws of the automatic chuck (560) are respectively connected to several clamps (210).

10. An automatic assembly device for flange processing according to claim 9, characterized in that: The mounting base (510) is provided with a motor (570) and a lead screw (580). The output shaft of the motor (570) is connected to the lead screw (580). The lifting base (540) is provided with a nut (590), which is threaded onto the lead screw (580).

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