CN114789551B

CN114789551B - Plastic steel air duct flange machining device and machining method

Info

Publication number: CN114789551B
Application number: CN202210708692.XA
Authority: CN
Inventors: 孙年茂
Original assignee: TIANJIN AOLIANTE STEEL STRUCTURE INSTALLATION ENGINEERING CO LTD
Current assignee: TIANJIN AOLIANTE STEEL STRUCTURE INSTALLATION ENGINEERING CO LTD
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-09-09
Anticipated expiration: 2042-06-22
Also published as: CN114789551A

Abstract

The invention provides a device and a method for processing a plastic steel air duct flange, wherein a first servo motor of a fixing component of the device controls an annular workpiece to rotate and move through a main shaft reducer and a quick chuck, a third servo motor of a clamping component controls a screw rod worm gear to rotate through a third planetary reducer and controls a pressing screw rod to push or pull a sliding slider and control a clamping interval between a sliding roller and a fixed bottom roller, a second servo motor of a turnover component controls a rotating gear to crawl along a gear ring through a second planetary reducer and drives a main fixing table to rotate around a central fixing shaft through a second fixing support, and the sliding roller and the fixed bottom roller rotate to drive a clamping part of the workpiece clamped in the middle and extruded and extended to turn over to complete workpiece flanging. The flanging device disclosed by the invention does not need heating in the flanging process, the processed air duct flange is high in precision, the radian formed by flanging is consistent, the end face of the flange is flat, the stress concentration of a bent part can be effectively avoided, and the flanging quality is high.

Description

Plastic steel air duct flange machining device and machining method

Technical Field

The invention belongs to the technical field of air duct flange manufacturing, and particularly relates to a device and a method for processing a plastic steel air duct flange.

Background

The plastic steel pipeline has excellent performances such as rigidity, elasticity, corrosion resistance and ageing resistance, is used for forming a plastic steel air channel in a ventilation scene, has long service life, is favored by the market, the plastic steel air channel is usually required to be connected to form a continuous long channel so as to meet the requirement of the use scene, the end part of the air channel is required to be correspondingly processed to form a flange, and the adjacent air channels are connected and fixed through the flange. The conventional plastic steel air duct flanging process is common mechanical flanging equipment, the end part of an air duct is flanged through a flanging die, the flanging die is often matched with heating, rotating and other modes to facilitate the formation of flanging, during the rotary flanging processing, the flanging die and the air duct are usually required to rotate, the flanging part of the air duct is heated at the same time to facilitate the smooth flanging, the phenomenon that the pipeline has cracks due to overlarge stress of a bending part during flanging is avoided, in addition, a heating device is arranged to improve the flanging cost, the heating temperature needs to be reasonably controlled, the overhigh or overlow temperature is not beneficial to the formation of the flanging, and the flanging is easy to be formed due to different deformation degrees generated by different parts with uneven heating, so that the radian of the flanging is inconsistent or the end part is not flat, namely, the flanging precision is not high, and the shape and the quality of the flanging do not meet the requirements, therefore, the existing air duct plastic steel flange flanging needs to be heated in a manufacturing mode, but also can guarantee the flanging precision and quality of the air duct flange, thereby reducing the processing difficulty and improving the processing precision.

Disclosure of Invention

The invention aims to provide a device and a method for processing a plastic steel air duct flange, which solve the technical problem that the flange precision can still be ensured without heating.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

comprises a fixing clamp, a flanging part and a power supply system;

the fixing clamp is used for fixing the end part of the air duct to be flanged, and the inner periphery of the fixing clamp comprises an arc-shaped part for shaping the shape of the air duct flanging;

the flanging part applies acting force to the end part of the air duct to form a flange flanging, the flanging part comprises a metal sheet ring and a coil, the metal sheet ring is arranged on the outermost layer of the flanging part, and the coil is arranged near the metal sheet ring and is not in contact with the metal sheet ring; one part of the flanging part extends into the air duct to be flanged, the metal sheet ring is concentrically sleeved with the air duct, and the metal sheet ring is not contacted with the air duct;

the power supply system is electrically connected with the coil, and the power supply system is connected with the coil in a power-on or power-off mode.

Furthermore, a fixing clamp and the axis of the flanging part of the plastic steel air duct flange processing device are arranged on the processing table along the horizontal direction.

Further, the flanging part further comprises a supporting part, the supporting part is T-shaped, one end, away from the vertical part of the supporting part, of the metal sheet ring is a fixed end, the fixed end is fixed to the outer side of the horizontal part of the supporting part, one end, close to the vertical part of the supporting part, of the metal sheet ring is a free end, a gap exists between the free end and the outer side of the horizontal part of the supporting part, the coil comprises a first coil, and a first coil is arranged inside the horizontal part of the supporting part.

Further, the coil also comprises a second coil, the second coil is arranged inside the vertical part of the supporting part, and the second coil is arranged on the outer side of the first coil.

Further, a coil III is arranged inside the fixing clamp, the power supply system is electrically connected with the coil III, and the power supply system is connected with the coil III in a power-on or power-off mode.

Furthermore, the metal sheet ring is formed by a plurality of metal sheets, the free ends of the metal sheets are provided with overlapping areas or do not form overlapping areas, and the fixed ends of the metal sheets are of an integral structure or a split structure.

Further, the horizontal portion of the support portion is provided with a step at a fixed end position of the sheet metal ring, the fixed end of the sheet metal ring being inserted inside the step.

A processing method of a plastic steel air duct flange comprises the following steps:

step one, clamping the end part of the air duct by a fixing clamp;

step two, the flanging part extends into the air duct to be flanged, and the metal sheet ring and the air duct are concentrically sleeved to ensure that the metal sheet ring and the air duct are not contacted;

and step three, powering off the power supply system and the coil in the flanging part after the power supply system and the coil are powered on, applying voltage to the coil, generating an electromagnetic field by the coil, generating electromagnetic induction current by the sheet metal ring, receiving the electromagnetic force formed by the electromagnetic field of the coil by the sheet metal ring generating the induction current, turning over the sheet metal ring outwards under the action of the electromagnetic force, acting on the end part of the air duct when the sheet metal ring is turned over, and turning over the end part of the air duct outwards along with the sheet metal ring to form a flange flanging structure to finish flanging of the air duct.

Further, the method also comprises the fourth step of: and powering off the coil III in the fixing clamp after the coil III and the power supply system are powered on, applying voltage to the coil III, generating an electromagnetic field by the coil III, generating electromagnetic induction current by the metal sheet ring, turning over the metal sheet ring inwards under the action of the electromagnetic force by the electromagnetic field of the coil III, and returning the metal sheet ring to the horizontal state.

Further, the method also comprises the following step five: and withdrawing the flanging part from the air duct which completes flanging, and waiting for flanging the air duct next time.

Compared with the prior art, the plastic steel air duct flange processing device has the following advantages:

the flanging device disclosed by the invention does not need heating in the flanging process, the processed air duct flange is high in precision, the radian formed by flanging is consistent, the end face of the flange is flat, the stress concentration of a bent part can be effectively avoided, and the flanging quality is high.

To the unable plastic steel wind channel that receives the electromagnetic force effect, through sheet metal ring and the plastic steel wind channel that cup joints, the electromagnetic force in the twinkling of an eye acts on the sheet metal ring, and the deformation through the sheet metal ring acts on the plastic steel wind channel, the processing that can be convenient forms the flange turn-ups in plastic steel wind channel, only need several seconds the circular telegram can exert sufficient power on the plastic steel wind channel and form the turn-ups, the shaping is fast, high durability and convenient operation, the noise in the course of working is little, it is more friendly to operation workman's healthy, the power consumption is little, low in processing cost and convenient.

The metal sheet ring is of an independent sheet structure, can be repeatedly turned outwards and turned inwards, has small deformation and can be continuously reused.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

fig. 1 is a schematic side view of a circular air duct flange processing apparatus according to a first embodiment of the present invention;

fig. 2 is a schematic top view of a circular air duct flange processing device according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a shaping roller of the circular air duct flange processing device according to the first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a right-angle sizing wheel of the circular air duct flange processing device according to the first embodiment of the invention;

fig. 5 is a schematic structural diagram of an obtuse angle setting wheel of a circular air duct flange processing device according to an embodiment of the present invention;

FIG. 6 is a first cross-sectional view of a plastic steel duct flange processing apparatus according to a second embodiment of the present invention;

FIG. 7 is a second cross-sectional view of the plastic steel duct flange processing apparatus according to the second embodiment of the present invention;

FIG. 8 is a third cross-sectional view of a plastic steel duct flange processing apparatus according to a second embodiment of the present invention;

fig. 9(a) is a view of a non-overlapping area of a metal sheet ring of a plastic steel duct flange processing device according to a second embodiment of the present invention;

FIG. 9(b) is a diagram of an overlapped area of a metal plate ring of the plastic-steel duct flange processing device according to the second embodiment of the present invention;

fig. 10 is a cross-sectional view of a plastic steel duct flange processing device for fixing a coil in another fixing manner in the second embodiment of the invention.

Description of the reference numerals:

10-a workpiece; 11-a quick chuck; 12-a spindle reducer; 13-a first servo motor; 14-a linear guide; 15-guide rail slider seat; 16-a sliding platform; 17-a second servo motor; 18-gear ring; 19-fixed bottom roll; 20-fixing the shaft block; 21-a lift cylinder; 22-a third servomotor; 23-a third planetary reducer; 24-lead screw worm gear; 25-a pressing screw rod; 26-a sliding block; 27-sliding rollers; 28-a central stationary shaft; 29-a first fixed support; 30-a machine tool platform; 31-a second fixed support; 32-a rotating gear; 33-a first ball screw; 34-a fourth bracket; 35-a fourth planetary reducer; 36-a fourth servo motor; 37-a drive shaft; 38-a second planetary reducer; 39-a sizing roller; 40-a second ball screw; 41-moving the sliding table; 42-a fifth servomotor; 50-a primary stationary table; 61-a first forming wheel; 62-a second forming wheel; 63-wheel carrier; 64-right angle sizing wheel; 65-obtuse angle forming wheel; a fixing clamp-70; arcuate-701; coil three-702; flanging part-80; sheet metal ring-801; sheet metal-8011; fixed end-8012 of the foil loop; a first coil-802; a second coil 803; a support portion-804; step-8041; a moving block-805; air duct-90.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example one

Referring to fig. 1-5, the fixing assembly includes a workpiece holding bracket, a fast chuck 11, a spindle reducer 12 and a first servo motor 13, the annular workpiece 10 is fixed on the workpiece holding bracket through the fast chuck 11, the workpiece holding bracket is connected with the first servo motor 13 through the spindle reducer 12, and the first servo motor 13 controls the annular workpiece 10 to rotate and move through the spindle reducer 12 and the fast chuck 11;

the clamping assembly comprises a fixed roller assembly, a movable roller assembly, a main fixed table 50 and a lifting cylinder 21;

the fixed roller assembly comprises a fixed bottom roller 19, a fixed shaft block 20, a first ball screw 33, a fourth support 34, a fourth planetary reducer 35 and a fourth servo motor 36, wherein the fixed bottom roller 19 is arranged on the fixed shaft block 20, the fixed shaft block 20 is arranged on a main fixed table 50, the first ball screw 33, the fourth planetary reducer 35 and the fourth servo motor 36 are sequentially connected, the fourth servo motor 36 controls the first ball screw 33 to extrude the main fixed table 50 through the fourth planetary reducer 35 so as to enable the main fixed table 50 to translate, the main fixed table 50 controls the distance between the fixed bottom roller 19 and the workpiece 10 in a translation mode, and the first ball screw 33, the fourth planetary reducer 35 and the fourth servo motor 36 are arranged on the main fixed table 50 through the fourth support 34; the main fixed table 50 is arranged on the linear guide rail 14 through the guide rail slider seat 15, and the first ball screw 33 controls the main fixed table 50 to translate along the linear guide rail 14. The guide rail slider seat 15 is provided with a locking mechanism, and the main fixed table 50 can be locked on the linear guide rail 14 through the locking mechanism.

The movable roller assembly comprises a sliding roller 27, a sliding slider 26, a pressing screw rod 25, a screw rod worm gear 24, a third support, a third planetary reducer 23 and a third servo motor 22, the sliding roller 27 is arranged on the sliding slider 26, one end of the sliding slider 26 is connected with the screw rod worm gear 24 through the pressing screw rod 25, the screw rod worm gear 24 is connected with the third servo motor 22 through the third planetary reducer 23, the third servo motor 22 controls the screw rod worm gear 24 to rotate through the third planetary reducer 23 and controls the pressing screw rod 25 to push or pull the sliding slider 26 and controls the clamping distance between the sliding roller 27 and the fixed bottom roller 19, and the pressing screw rod 25, the screw rod worm gear 24, the third planetary reducer 23 and the third servo motor 22 are arranged on the main fixed table 50 through the third support;

the lifting cylinder 21 is connected with the main fixing table 50, and the lifting cylinder 21 controls the main fixing table 50 to move, so that the fixed bottom roller 19 and the sliding roller 27 on the main fixing table 50 are controlled to move towards the workpiece 10 or move away from the workpiece 10;

the overturning assembly comprises a gear ring 18, a rotating gear 32, a second planetary reducer 38, a second servo motor 17, a first fixed bracket 29, a second fixed bracket 31 and a central fixed shaft 28;

the gear ring 18 is arranged on a machine tool platform 30, the amplitude of the gear ring 18 is at least 90 degrees, one end, close to a workpiece 10, of a main fixed table 50 is arranged on the machine tool platform 30 through a first fixed support 29 and a central fixed shaft 28, the main fixed table 50 can rotate around the central fixed shaft 28, one end, far away from the workpiece 10, of the main fixed table 50 is connected with the gear ring 18 through a second fixed support 31 and a rotating gear 32, the rotating gear 32 is connected with a second planetary reducer 38 and a second servo motor 17, the second servo motor 17 controls the rotating gear 32 to crawl along the gear ring 18 through the second planetary reducer 38 and drives the main fixed table 50 to rotate around the central fixed shaft 28 through the second fixed support 31, and the second servo motor 17 and the second planetary reducer 38 are arranged on the main fixed table 50 through the second fixed support 31.

The machine tool platform 30 is provided with two gear rings 18 which are arranged in parallel, the two gear rings 18 are symmetrically arranged on two sides of a main fixed table 50, each gear ring 18 is provided with a group of rotating gears 32, a second planetary reducer 38, a second servo motor 17, a first fixed support 29 and a second fixed support 31, and the rotating gears 32 on the two gear rings 18 are connected through a transmission shaft 37 and rotate synchronously.

The device also comprises a flanging shaping assembly; the flanging and sizing assembly comprises a sizing roller 39, a second ball screw 40, a movable sliding table 41 and a fifth servo motor 42, the fifth servo motor 42 is connected with the second ball screw 40, and the fifth servo motor 42 controls the sizing roller 39 to move along the movable sliding table 41 through the second ball screw 40 so as to be close to or far away from the flanging of the workpiece 10.

As shown in fig. 3, the setting roller 39 includes a first forming roller 61 and a second forming roller 62, the first forming roller 61 and the second forming roller 62 are disposed on a wheel frame 63, and the first forming roller 61 and the second forming roller 62 are spaced apart from the workpiece 10 at the same distance.

As shown in fig. 4-5, the forming wheel of the sizing roller 39 is a right-angle sizing wheel 64 or an obtuse-angle forming wheel 65.

This embodiment circular wind channel flange processingequipment adopt the plastic steel board as raw and other materials, choose for use different plastic steel boards to customize according to the size difference of circular wind channel flange work piece and tailor, form the plastic steel wind channel after the welding, make the annular work piece 10 of plastic steel wind channel length as required, extend the annular work piece 10 of circle through the device and press the turn-ups and once only make into circular wind channel flange again, the turn-ups device turn-ups in-process need not heat, the wind channel flange precision of processing is high, the radian that the turn-ups formed can meet the demands, the flange terminal surface is level and smooth, and can effectively avoid the concentration of curved part stress, the turn-ups high quality.

And because the plastic steel plate is customized and cut, the excess materials are less, and the excess materials are also plastic steel plates and can be continuously used, so that the material cost is reduced, and the production cost of the circular air duct flange is reduced.

Based on the circular air duct flange processing device, the processing method comprises the following steps:

a, fixing an annular workpiece 10 on a workpiece clamping frame through a quick chuck 11;

b, controlling the main fixing table 50 to move towards the workpiece 10 by the lifting cylinder 21, and inserting the fixed bottom roller 19 and the sliding roller 27 into two sides of the workpiece 10;

c, the fourth servo motor 36 controls the first ball screw 33 to press the main fixing table 50 through the fourth planetary reducer 35, so that the main fixing table 50 moves towards the workpiece 10 and the distance between the fixed bottom roller 19 and the outer side of the workpiece 10 is controlled;

d, the third servo motor 22 controls the screw rod worm wheel 24 to rotate through the third planetary reducer 23 and controls the pressing screw rod 25 to push the sliding slide block 26 to move, and the sliding slide block 26 moves to drive the sliding roller 27 to move towards the inner side of the workpiece 10 and clamp the workpiece 10 with the fixed bottom roller 19;

e, the first servo motor 13 controls the workpiece 10 to rotate and move through the main shaft reducer 12, and the sliding roller 27 and the fixed bottom roller 19 extrude and extend the clamped part of the workpiece 10 along with the rotation and the movement of the workpiece 10;

f, the second servo motor 17 controls the rotary gear 32 to crawl along the gear ring 18 through the second planetary reducer 38 and drives the main fixed platform 50 to rotate around the central fixed shaft 28 through the second fixed bracket 31, the main fixed platform 50 rotates around the central fixed shaft 28 to drive the sliding roller 27 and the fixed bottom roller 19 to rotate, and the sliding roller 27 and the fixed bottom roller 19 rotate to drive the clamping part of the extruded and extended workpiece 10 clamped in the middle to overturn;

g, the sliding roller 27 and the fixed bottom roller 19 turn over the clamped part of the workpiece 10 to 90 degrees, the fixed bottom roller 19 and the sliding roller 27 on the main fixing table 50 are controlled to be far away from the workpiece 10 through the lifting cylinder 21, and flanging of the workpiece 10 is completed.

h, the fifth servo motor 42 controls the sizing roller 39 to be close to the flanging of the workpiece 10 along the sliding platform 16 through the second ball screw 40, the first servo motor 13 controls the workpiece 10 to rotate and move through the spindle reducer 12 and the quick chuck 11, and the sizing roller 39 finishes sizing the flanging of the workpiece 10.

i, the quick chuck 11 is retracted, the workpiece 10 is taken out, and the apparatus is restored to the initial state.

Example two

Referring to fig. 6-8, fig. 6 is a first cross-sectional view of a plastic steel duct flange processing device according to an embodiment of the present invention, in which a preparation operation is completed before flanging; FIG. 7 is a second cross-sectional view of the plastic steel duct flange processing apparatus according to the embodiment of the present invention, showing a state of completing flanging; fig. 8 is a third cross-sectional view of the plastic steel duct flange processing device according to the embodiment of the invention, wherein the metal sheet ring returns to the original position after the flanging is completed.

Specifically, the plastic steel air duct flange processing device comprises a fixing clamp 70, a flanging part 80 and a power supply system;

the fixing clamp 70 is used for fixing the end part of the air duct to be flanged, and the inner periphery of the fixing clamp 70 comprises an arc part 701 for shaping the shape of the air duct flanging;

the flanging part 80 is used for flanging the end part of the air duct 90 to form a flange, the flanging part 80 comprises a metal sheet ring 801 and a coil, the metal sheet ring 801 is arranged on the outermost layer of the flanging part 80, and the coil is arranged near the metal sheet ring 801 and is not in contact with the metal sheet ring 801; the flanging part 80 extends into the air duct 90 to be flanged, and the metal sheet ring 801 is sleeved with the air duct 90 concentrically without contacting with the air duct 90;

the power supply system is electrically connected with the coil, and the power supply system is electrified or deenergized with the coil to electrify or deenergize the coil;

in the process of powering off the coil after the coil is powered on, the applied voltage of the coil generates a magnetic field, the corresponding parts of the sheet metal ring 801 and the coil generate induction current, the magnetic field of the coil generates normal acting force acting on the sheet metal ring 801 through the action of the induction current, the acting force is electromagnetic force, the generated pressure value is very large, the sheet metal ring 801 deforms outwards under the action of the acting force vertical to the surface of the sheet metal ring 801, and the sheet metal ring deforms instantly to be attached to the end face of the fixing clamp 70; although the plastic steel air duct 90 does not generate induced current under the action of the magnetic field, the plastic steel air duct 90 is sleeved outside the metal sheet ring and acts on the plastic steel air duct 90 when the metal sheet ring is turned outwards, so that the plastic steel air duct 90 is turned over; the plastic steel air duct flanging device provided in the embodiment can be used for processing the flange of the plastic steel air duct conveniently and quickly, heating is not needed in the flanging process, the processed air duct flange is high in precision, the radian formed by the flanging is consistent, the end face of the flange is flat, the stress concentration of a bent part can be effectively avoided, the forming is fast, the operation is convenient, and the problem of high noise during mechanical flanging can be solved.

According to the wall thickness of the plastic steel air duct 90, the appropriate thickness of the metal sheet ring 801, the resistance of the coil and the applied voltage are matched to ensure that the magnetic field force borne by the metal sheet ring 801 is enough to enable the wall of the plastic steel air duct to be turned outwards and deformed; for example, the thicker the wall thickness of the plastic-steel duct, the greater the force required for flanging, and the thicker the metal sheet 8011, the metal sheet ring 801 should be used to apply a greater voltage or reduce the resistance of the coil. In addition, in order to avoid the phenomenon that the metal sheet ring is pressed into the plastic steel air channel directly to form pressing fit when being turned outwards, the applied voltage and the resistance of the coil need to be adjusted and matched, so that the metal sheet ring can complete flanging of the plastic steel air channel and cannot form pressing fit with the plastic steel air channel when being turned outwards.

The axis of the flange processing device is horizontally arranged on the processing table, only the end part of the air duct 90 needs to be horizontally placed into the flange processing device, the fixing clamp 70 is used for fixing the end part of the air duct 90 to be flanged, the flange processing device can be suitable for various air ducts 90 with different length sizes, only the end part of the air duct needs to be clamped in the fixing clamp 70 no matter the length of the air duct, and the air duct is placed horizontally, so that the flange processing device is high in applicability, and is more convenient and easier to implement in space relative to the processing in the height direction; the axes of the fixing clamp 70 and the flanging part 80 of the flange processing device are both arranged on the processing table along the horizontal direction, the fixing clamp 70 is fixed on the processing table, the flanging part 80 is movably arranged, for example, the flanging part 80 is arranged on the processing table in a sliding manner through a guide rail, and a driving device can be arranged to drive the flanging part 80 to slide along the guide rail, so that the flanging part 80 extends into the air duct 90 or withdraws from the air duct 90; wherein the holding fixture 70 is of a conventional fixture type that can be used to hold air ducts of different diameters.

The flanging part 80 further comprises a supporting part 804, the supporting part 804 is in a T shape, one end, away from the vertical part of the supporting part 804, of the metal sheet ring 801 is a fixed end, the fixed end is fixed to the outer side of the horizontal part of the supporting part 804, one end, close to the vertical part of the supporting part 804, of the metal sheet ring 801 is a free end, a gap exists between the free end and the outer side of the horizontal part of the supporting part 804, the coil of the flanging part 80 comprises a coil I802, and the coil I802 is arranged inside the horizontal part of the supporting part 804; when the flanging part 80 extends into the air duct 90, at least a part of the horizontal part of the supporting part 804 extends into the air duct 90, and the vertical part of the supporting part 804 is always outside the air duct 90; when at least a part of the horizontal part extends into the air duct 90, the fixed end 8012 of the metal sheet ring extends into the air duct, and the free end of the metal sheet ring 801 extends into the air duct completely or partially, so that when the metal sheet ring 801 is acted by magnetic force, the metal sheet ring 801 turns over and acts on the inner wall of the air duct, and the end part of the air duct is enabled to turn outwards to form flange flanging.

The coil of the flanging part 80 further comprises a second coil 803, the second coil 803 is arranged inside the vertical part of the supporting part 804, the second coil 803 is arranged on the outer side of the first coil 802, the first coil 802 is powered on and off once, after the sheet metal ring 801 is overturned to enable the end part of the air duct to form flange flanging, in order to further enable the flanging effect to be better, the second coil 803 is powered on and off once after the air duct flanging is formed, the sheet metal ring 801 further presses the air duct flanging part downwards under the action of magnetic force provided by the second coil 803, and the flanged edge after flanging is smoother.

In another fixing mode of the second coil, see fig. 10, the second coil 803 is fixed on the end face of the vertical portion of the supporting portion 804 through an annular moving block 805, the moving block 805 is connected with the vertical portion of the supporting portion 804 through a telescopic rod, once the first coil 802 is powered on and powered off, after the metal sheet ring 801 is turned over to enable the end portion of the air duct to form flange flanging, in order to further enable the flanging effect to be better, the telescopic rod drives the moving block 805 to be close to the flanging portion of the flange, once the second coil 803 is powered on and powered off, because the coil 2 is closer to the flanging portion of the flange, the magnetic action effect is better, the most force can be provided to enable the flanged flange edge to be flat, after the flanging is flat, the telescopic rod drives the moving block 805 to reset, and returns to the end face of the vertical portion of the supporting portion 804.

The third coil 702 is arranged in the fixing clamp 70, the power supply system is electrically connected with the third coil 702, the third coil 702 is powered on and off once, the sheet metal ring 801 rotates and returns to a horizontal state under the action of magnetic force provided by the third coil 702, namely the third coil 702 enables the sheet metal ring 801 to reset, and the rotating force of the sheet metal ring 801 cannot act on the air duct due to the fact that the sheet metal ring 801 is arranged on the outer side of the air duct, and the air duct with the turned edges is not affected.

Referring to fig. 9(a) and 9(b), the sheet metal ring 801 is formed by a plurality of metal sheets 8011, the free ends of the plurality of metal sheets 8011 form an overlapping area or do not form an overlapping area, and the fixed ends of the plurality of metal sheets are of an integral structure or a split structure; the shape of the free end of the metal sheet can be set according to the requirement, when the free end of the metal sheet forms an overlapping area, the overlapping area of the metal sheet is reduced or even disappears after the metal sheet completes flanging of the plastic steel air channel, the metal sheet 8011 is uniformly pressed on the plastic steel air channel, the fixed end of the metal sheet is fixed on the supporting part 804, the fixed end is not deformed when the metal sheet 8011 is turned over, the fixed end of the metal sheet is in an integral structure or a split structure, for example, the fixed end 8012 of a metal sheet ring formed by the metal sheet is in a cylindrical structure and is integrally fixed on the supporting part 804, or the end of the metal sheet 8011 is independently fixed on the supporting part 804 to form a ring finally; the free ends of the metal sheets are independently distributed at intervals, the metal sheets can restore to the original positions under the action of the coil III 702 after being turned over, the generated deformation is negligible, and the metal sheets can be turned over for multiple times.

A step 8041 is arranged at the position of the fixed end 8012 of the metal sheet ring on the horizontal part of the supporting part 804, the fixed end 8012 of the metal sheet ring is inserted into the step 8041, and a certain gap exists between the step 8041 of the supporting part 804 and the inner wall of the air duct 90, so that the supporting part 804 is prevented from generating friction force with the inner wall of the air duct 90 when moving and generating unnecessary abrasion; by arranging the step 8041, a gap with a stable size is formed between the sheet metal ring 801 and the air duct, so that the sheet metal ring 801 is prevented from excessively extruding the inner wall of the air duct.

Based on the plastic steel air duct flange processing device, the processing method comprises the following steps:

step one, clamping the end part of the air duct by a fixing clamp 70;

step two, the flanging part 80 extends into the air duct to be flanged, and the metal sheet ring 801 is concentrically sleeved with the air duct to ensure that the flanging part and the air duct are not contacted;

and step three, powering off the power supply system and the coil in the flanging part 80 after the power supply system and the coil are powered on, applying voltage to the coil, generating a pulse electromagnetic field by the coil, generating electromagnetic induction current by the sheet metal ring 801, subjecting the sheet metal ring 801 generating the induction current to electromagnetic force formed by the electromagnetic field of the coil, turning over the sheet metal ring 801 outwards under the action of the electromagnetic force, and acting on the end part of the air duct when the sheet metal ring 801 is turned over, so that the end part of the air duct is turned over outwards along with the sheet metal ring 801 to form a flange flanging structure, and the flanging of the air duct is completed.

Step four: after the coil III 702 in the fixing clamp 70 is powered on and then powered off with the power supply system, voltage is applied to the coil III 702, an electromagnetic field is generated by the coil III 702, electromagnetic induction current is generated by the sheet metal ring 801, the sheet metal ring 801 generating the induction current is subjected to electromagnetic force formed by the electromagnetic field of the coil III 702, the sheet metal ring 801 is turned inwards under the action of the electromagnetic force, and the sheet metal ring 801 is turned over and restored to a horizontal state.

Step five: and withdrawing the flanging part 80 from the air duct with the flanging completed for flanging the air duct next time.

When the first coil 802 and the second coil 803 are arranged on the supporting portion 804, the flanging of the air duct in the third step can be divided into two steps, firstly, the first coil 802 is electrified, the first coil 802 is applied with voltage, the first coil 802 generates an electromagnetic field, the sheet metal ring 801 generates electromagnetic induction current, the sheet metal ring 801 generating the induction current is subjected to the electromagnetic force formed by the electromagnetic field of the coil, the sheet metal ring 801 is turned outwards under the action of the electromagnetic force, the sheet metal ring 801 acts on the end portion of the air duct when turned, so that the end portion of the air duct is turned outwards along with the sheet metal ring 801 to form a flange flanging structure, and the flanging of the air duct is completed; then, the second coil 803 is electrified, the metal sheet ring 801 further presses down the flanging part of the air duct under the action of the magnetic force provided by the second coil 803, and the flanged flange is more flat.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality" means two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A plastic steel air duct flange processing device is characterized by comprising a fixing clamp (70), a flanging part (80) and a power supply system;

the fixing clamp is used for fixing the end part of the air duct (90) to be flanged, and the inner periphery of the fixing clamp comprises an arc-shaped part (701) for shaping the shape of the air duct flanging;

the flanging part (80) applies acting force to the end part of the air duct to form a flange of the flange, the flanging part (80) comprises a metal sheet ring (801) and a coil, the metal sheet ring (801) is arranged on the outermost layer of the flanging part (80), and the coil is arranged near the metal sheet ring (801) and is not in contact with the metal sheet ring (801); one part of the flanging part (80) extends into the air duct (90) to be flanged, the metal sheet ring (801) is concentrically sleeved with the air duct (90), and the metal sheet ring (801) is not contacted with the air duct (90);

the power supply system is electrically connected with the coil and is connected with the coil in a power-on or power-off manner;

the flanging part (80) further comprises a supporting part (804), the supporting part (804) is T-shaped, one end, away from the vertical part of the supporting part (804), of the sheet metal ring (801) is a fixed end, the fixed end is fixed to the outer side of the horizontal part of the supporting part (804), one end, close to the vertical part of the supporting part (804), of the sheet metal ring (801) is a free end, a gap exists between the free end and the outer side of the horizontal part of the supporting part (804), the coil comprises a coil I (802), and the coil I (802) is arranged inside the horizontal part of the supporting part (804);

the coil further comprises a second coil (803), the second coil (803) is arranged inside the vertical part of the supporting part (804), and the second coil (803) is arranged outside the first coil (802);

a coil III (702) is arranged in the fixing clamp, the power supply system is electrically connected with the coil III (702), and the power supply system is connected with the coil III (702) in a power-on or power-off manner;

the metal sheet ring (801) is formed by a plurality of metal sheets (8011), overlapping areas or non-overlapping areas are formed at free ends of the metal sheets (8011), and fixed ends of the metal sheets are of an integral structure or a split structure.

2. The plastic steel wind channel flange processingequipment of claim 1, characterized in that:

the axes of a fixing clamp (70) and a flanging part (80) of the plastic steel air duct flange processing device are arranged on the processing table along the horizontal direction.

3. The plastic steel wind channel flange processingequipment of claim 1, characterized in that:

the horizontal part of the supporting part (804) is provided with a step (8041) at the position of the fixed end (8012) of the metal sheet ring, and the fixed end (8012) of the metal sheet ring is inserted inside the step (8041).

4. A plastic steel air duct flange processing method based on the plastic steel air duct flange processing device of any one of claims 1 to 3 is characterized in that:

the method comprises the following steps:

step one, clamping the end part of the air duct by a fixing clamp;

step three, powering off the power supply system and the coil in the flanging part after the power supply system and the coil are powered on, applying voltage to the coil, generating an electromagnetic field by the coil, generating electromagnetic induction current by the sheet metal ring, subjecting the sheet metal ring generating the induction current to electromagnetic force formed by the electromagnetic field of the coil, outwards overturning the sheet metal ring under the action of the electromagnetic force, and acting on the end part of the air duct when the sheet metal ring is overturned, so that the end part of the air duct outwards overturns along with the sheet metal ring to form a flange flanging structure, and completing flanging of the air duct;

step four: and powering off the coil III in the fixing clamp after the coil III and the power supply system are powered on, applying voltage to the coil III, generating an electromagnetic field by the coil III, generating electromagnetic induction current by the metal sheet ring, turning over the metal sheet ring inwards under the action of the electromagnetic force by the electromagnetic field of the coil III, and returning the metal sheet ring to the horizontal state.

5. The method for processing a plastic-steel air duct flange according to claim 4,

further comprises the following steps: and withdrawing the flanging part from the air duct which completes flanging, and waiting for flanging the air duct next time.