CN209109915U - A kind of hemming device for kitchen ventilator air duct crimping - Google Patents
A kind of hemming device for kitchen ventilator air duct crimping Download PDFInfo
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- CN209109915U CN209109915U CN201821348385.0U CN201821348385U CN209109915U CN 209109915 U CN209109915 U CN 209109915U CN 201821348385 U CN201821348385 U CN 201821348385U CN 209109915 U CN209109915 U CN 209109915U
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- crimping
- supporting plate
- platen
- hole
- plate
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Abstract
A kind of hemming device for kitchen ventilator air duct crimping belongs to kitchen ventilator manufacturing equipment technical field；Air duct pressing plate is locked in air-duct spiral case body in the fixed plate of air duct by location hole and positioning finger setting, realizes the effect that air-duct spiral case body will not be shifted in crimping；Using stepper motor as power, make slide push rod realize front and back auto-feed, by rotate handwheel, hand wheel rotating screw rod, screw rod push supporting plate, make supporting plate drive sliding bottom realize manually with automatic two kinds of feeding modes；When template rotation, guide wheel is walked about along template involute, in realizations crimping wheel and last volume cincture pass through guide wheel walk about also synchronize walk about, ensure that the phase homogenous quantities of upper and lower crimping；Stepper motor is controlled by controller, stepper motor is made to slowly run, crimping is carried out to upper hem by upper crimping wheel, last volume cincture carries out crimping to lower hem, realizes to upper hem and the slow crimping of lower hem, to guarantee the quality of crimping.
Description
Technical field
The utility model belongs to kitchen ventilator manufacturing equipment technical field, is specifically related to a kind of for kitchen ventilator air duct crimping
Hemming device.
Background technique
Kitchen ventilator uses air duct of range hood system generally to realize the function of suction, and spiral case is range hood
Main component in air duct, the spiral case in usual air duct of range hood include that volute body, volute tongue, exhaust passage, air outlet, motor are solid
Determine frame and air inlet, volute body is helical form disk body, and volute body includes upper housing, lower case and shell side, and the side of volute body is set
There is air inlet, exhaust passage is located in volute body.
Volute body substantially connects formed a entirety by shell side among lower case by upper housing at this stage at present,
The volute body of this connection, in processing and manufacturing, operation is inconvenient, because upper housing and the edge of lower case need infolding, shell
While upper-lower casing is connected close to the inside edge rolled well, it usually needs manually beaten by mechanical-assisted to complete upper housing
It connect, is caused under production efficiency with lower case with the crimping on shell side, and connecting portion quality cannot ensure unification, cause to roll over
Blow-by at side makes volute body when in use, will appear oil leak situation at shell side, for a long time using also result in upper housing and
The case where lower case and shell side are fallen off.
Summary of the invention
The utility model mainly solves technical problem present in the above-mentioned prior art, provides a kind of for lampblack absorber wind
The hemming device of road crimping.
Above technical problems of the utility model are mainly solved by the following technical scheme: a kind of be used for oil smoke
The upper left side of the hemming device of machine air duct crimping, including platen and air duct pressing plate, the platen is equipped with L shape supporting plate, the L shape branch
The left side of plate upper end is equipped with screw rod fixing piece, is equipped with internal thread hole, the internal thread hole at the center of the screw rod fixing piece
Hole in be equipped with screw rod, the internal thread hole and screw rod are intermeshed, and the left end of the screw rod is equipped with handwheel, the L shape supporting plate
Right be equipped with supporting plate, the screw rod passes through L shape supporting plate and connects supporting plate, and the lower end of the supporting plate is equipped with sliding bottom, described
The left side of supporting plate and sliding bottom junction is equipped with two pieces of reinforcing ribs, and the front and rear sides of the sliding bottom are equipped with sliding pressure
Block, the wiper block are in inverted L shape, and the lower end of shown wiper block connects platen, and the upper end of the supporting plate is equipped with upper mounted plate,
The upper right side of the sliding bottom is equipped with rotating cylinder, and the rotating cylinder is at the right of supporting plate, the center of the rotating cylinder upper and lower ends
Be equipped with shaft, the upper end of the shaft connects upper mounted plate, and the lower end of the shaft connects sliding bottom, the shaft with it is upper
The junction of fixed plate and sliding bottom is equipped with bearing, and the platen on the downside of the sliding bottom is equipped with sliding groove, the cunning
Slide push rod is equipped at the center of dynamic Its lower side, the upper end of the slide push rod connects sliding bottom, and the slide push rod is set
In in sliding groove, the lower end of the slide push rod is equipped with motion thread hole, and a biography is equipped in the hole in the motion thread hole
Dynamic screw rod, the drive lead screw and motion thread hole are intermeshed, and the left end of the drive lead screw is equipped with stepper motor, the step
Be set to the lower left side of platen into motor, the right of the sliding bottom is equipped with travel switch, the travel switch be set to platen it
On, the left end of the travel switch is equipped with stroke push rod, and the forward right side of the rotating cylinder lower end is equipped with guide wheel fixed link, described to lead
The front end for taking turns fixed link is equipped with guide wheel, and the middle part of the rotating cylinder right lateral side is equipped with the first fixed link, the rotating cylinder right lateral side
Upper end is equipped with the second fixed link, and the front end of first fixed link is equipped with last volume cincture, the front end of second fixed link
Portion is equipped with upper crimping wheel, and the last volume cincture is identical with the upper and lower position of upper crimping wheel, outside the upper crimping wheel and last volume cincture
It is equipped with crimping slot at the center of side, forms a V-arrangement between the guide wheel fixed link and the first fixed link and the second fixed link
The rear of angle, the L shape supporting plate is equipped with spring anchor block, and spring is equipped between the spring anchor block and the first fixed link,
The upper right side of the platen is equipped with template, and the outside of the template is equipped with template involute, and the top of the template is equipped with air duct
Fixed bottom plate, the outside of the fixed bottom plate upper surface in the air duct are equipped with locating ring, are equipped with pressing plate at the center on the upside of the template
Pillar, the upper end of the pressing plate pillar are equipped with support board, and clamping screw is equipped at the center of the support board upper end, described
Clamping screw is equipped with nut, and the outside of the clamping screw is equipped with positioning pin, and the positioning pin is set to the upper end of support board,
Transmission shaft is equipped at center on the downside of the template, the downside of platen is equipped with retarder below the template, the retarder
Top is equipped with through-hole, and the through-hole is set on platen, and the lower end of the transmission shaft is under through-hole connection retarder, the platen
The two sides at end are equipped with stabilizer blade, and the lower end of the stabilizer blade is equipped with electric machine support, and the both ends of the electric machine support are separately connected two
The stabilizer blade of side, the upside of the electric machine support are equipped with main motor, and the right end of the main motor is equipped with lower driving wheel, the retarder
Left end be equipped with upper driving wheel, between the lower driving wheel and upper driving wheel be equipped with transmission belt, the downside of the platen right part
Equipped with controller, the controller controls stepper motor, main motor and travel switch, is equipped at the center of the pressing plate small logical
The outside in hole, the small through hole is equipped with location hole, and the location hole matches with positioning pin.
As Figure 1-Figure 4, the air duct snail of a kind of matched crimping of hemming device for kitchen ventilator air duct crimping
Shell, the air-duct spiral case body include upper housing, lower case and shell side, and air outlet is equipped at the center of the upper housing, described
Upper hem is equipped at the outer of upper housing, the inside at the upper housing outer is equipped with groove, sets at the outer of the lower case
There is a lower hem, the inside of the lower case is equipped with bulge loop, motor installing hole is equipped at the center of the lower case, on the shell side
The outer of side is equipped with upper fixed edge, and the outer on the downside of the shell side is equipped with lower fixed edge, the radian of the upper hem and lower hem
Size is identical, when combination, shell side is put on the outside of the bulge loop of lower case, upper body is being put on shell side, the upside on shell side is made
Outside below groove, forms an air-duct spiral case body, and after composition, upper hem needs to connect upper fixation by crimping
Side, lower hem need to connect lower fixed edge by crimping, connect upper housing, shell side and lower case, and junction is realized
The effect of sealing.
The utility model has the advantages that be fixed on bottom plate by the way that the air-duct spiral case body to crimping is put into air duct,
Because the inside of lower case is equipped with bulge loop, the downside of bulge loop is blocked by locating ring positioning, is accurately positioned air-duct spiral case body in wind
On the fixed bottom plate in road, air-duct spiral case body will be calibrated when without each crimping；The shape phase of the shape of air duct pressing plate and upper housing
Corresponding matching, air duct pressing plate are locked air duct pressing plate by bolt by location hole and positioning finger setting, nut, make air-duct spiral case
Body is locked in the fixed plate of air duct, realizes the effect that air-duct spiral case body will not be shifted in crimping；It is controlled and is walked by controller
Into motor, stepper motor rotates drive lead screw, when drive lead screw rotates, because drive lead screw and motion thread hole are intermeshed, makes
Slide push rod realizes front and back feeding, and slide push rod is made to drive sliding bottom, realizes sliding bottom auto-feed；By rotating hand
Wheel, hand wheel rotating screw rod, screw rod push supporting plate, make supporting plate that sliding bottom realization be driven manually and automatically can to operate operation；Bullet
Spring is tensed the first fixed link by spring anchor block, and because the first fixed link is connect with rotating cylinder, guide wheel fixed link is connect with rotating cylinder,
After the first fixed link is by spring straining, the guide wheel in guide wheel fixed link is also adjacent on template involute therewith, works as template
When rotation, guide wheel is walked about along template involute, and template involute is the appearance profile line of template, template involute and air-duct spiral case
The upper hem of body is identical with lower hem radian, in realization crimping wheel and last volume cincture by guide wheel walk about also synchronize walk about；This
When utility model is run, stepper motor is controlled by controller, so that sliding bottom is moved feeding along wiper block, by upper crimping wheel
Crimping is carried out to upper hem, last volume cincture carries out crimping to lower hem, and controller control stepper motor slowly feeds, realizes to upper
Flanging and the slow crimping of lower hem, to guarantee the quality of crimping；Because being equipped with travel switch, when sliding bottom touches travel switch
Afterwards, stepper motor inverts, and backs out sliding bottom, and crimping is completed, and realizes and improves production efficiency and the quality of production.Therefore this is practical
It is novel to have the characteristics that simple structure and reasonable design.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of air-duct spiral case body for the utility model crimping；
Fig. 2 is a kind of structural schematic diagram on shell side for the utility model crimping；
Fig. 3 is a kind of structural schematic diagram of lower case for the utility model crimping；
Fig. 4 is a kind of structural schematic diagram of upper housing for the utility model crimping；
Fig. 5 is a kind of structural schematic diagram of the utility model；
Fig. 6 is a kind of overlooking structure diagram of the utility model；
Fig. 7 is a kind of structural schematic diagram of the utility model air duct pressing plate；
Fig. 8 is the enlarged diagram in the portion A in Fig. 5；
Fig. 9 be in Fig. 6 B to schematic cross-sectional view；
Figure 10 is the scheme of installation of a kind of air duct fixed bottom plate and air-duct spiral case body of the utility model；
Figure 11 is the enlarged diagram in the portion C in Figure 10；
Figure 12 is the enlarged diagram in the portion D in Figure 10；
Figure 13 is structural schematic diagram of the utility model to a kind of air-duct spiral case body after air-duct spiral case body crimping.
In figure: 1, platen；2, air duct pressing plate；3, L shape supporting plate；4, screw rod fixing piece；5, internal thread hole；6, screw rod；7, hand
Wheel；8, supporting plate；9, sliding bottom；10, reinforcing rib；11, wiper block；12, upper mounted plate；13, rotating cylinder；14, shaft；15, axis
It holds；16, sliding groove；17, slide push rod；18, motion thread hole；19, drive lead screw；20, stepper motor；21, travel switch；
22, stroke push rod；23, guide wheel fixed link；24, guide wheel；25, the first fixed link；26, the second fixed link；27, last volume cincture；28,
Upper crimping wheel；29, crimping slot；30, spring anchor block；31, spring；32, template；33, template involute；34, the fixed bottom in air duct
Plate；35, locating ring；36, pressing plate pillar；37, support board；38, clamping screw；39, nut；40, positioning pin；41, transmission shaft；
42, retarder；43, through-hole；44, stabilizer blade；45, electric machine support；46, main motor；47, lower driving wheel；48, upper driving wheel；49,
Transmission belt；50, controller；51, small through hole；52, location hole；53, air-duct spiral case body；54, upper housing；55, lower case；56, shell
Side；57, air outlet；58, upper hem；59, groove；60, lower hem；61, bulge loop；62, motor installing hole；63, upper fixed edge；
64, lower fixed edge.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: a kind of hemming device for kitchen ventilator air duct crimping, as shown in Fig. 5-Figure 13, including platen and air duct
Pressing plate, the upper left side of the platen are equipped with L shape supporting plate, and the left side of the L shape supporting plate upper end is equipped with screw rod fixing piece, the spiral shell
It is equipped with internal thread hole at the center of bar fixing piece, is equipped with screw rod, the internal thread hole and screw rod phase in the hole of the internal thread hole
Mutually engagement, the left end of the screw rod are equipped with handwheel, and the right of the L shape supporting plate is equipped with supporting plate, and the screw rod passes through L shape supporting plate
And supporting plate is connected, the lower end of the supporting plate is equipped with sliding bottom, and the supporting plate and the left side of sliding bottom junction are equipped with two pieces
Reinforcing rib, the front and rear sides of the sliding bottom are equipped with wiper block, and the wiper block is in inverted L shape, shown wiper block
Lower end connect platen, the upper end of the supporting plate is equipped with upper mounted plate, and the upper right side of the sliding bottom is equipped with rotating cylinder, described turn
Cylinder is set to the right of supporting plate, is equipped at the center of the rotating cylinder upper and lower ends equipped with shaft, in the upper end connection of the shaft
The lower end of fixed plate, the shaft connects sliding bottom, and the junction of the shaft and upper mounted plate and sliding bottom is equipped with
Bearing, the platen on the downside of the sliding bottom are equipped with sliding groove, are equipped with slide push rod at the center on the downside of the sliding bottom,
The upper end of the slide push rod connects sliding bottom, and the slide push rod is set in sliding groove, the lower end of the slide push rod
Equipped with motion thread hole, a drive lead screw, the drive lead screw and motion thread hole are equipped in the hole in the motion thread hole
Intermeshing, the left end of the drive lead screw are equipped with stepper motor, and the stepper motor is set to the lower left side of platen, the sliding
The right of pedestal is equipped with travel switch, and the travel switch is set on platen, and the left end of the travel switch is pushed away equipped with stroke
Bar, the forward right side of the rotating cylinder lower end are equipped with guide wheel fixed link, and the front end of the guide wheel fixed link is equipped with guide wheel, and described turn
The middle part of cylinder right lateral side is equipped with the first fixed link, and the upper end of the rotating cylinder right lateral side is equipped with the second fixed link, and described first is solid
The front end of fixed pole is equipped with last volume cincture, and the front end of second fixed link is equipped with upper crimping wheel, the last volume cincture and upper
The upper and lower position of crimping wheel is identical, and crimping slot, the guide wheel are equipped at the center on the outside of the upper crimping wheel and last volume cincture
A V-arrangement angle is formed between fixed link and the first fixed link and the second fixed link, the rear of the L shape supporting plate is solid equipped with spring
Determine block, spring is equipped between the spring anchor block and the first fixed link, the upper right side of the platen is equipped with template, the template
Outside be equipped with template involute, the top of the template is equipped with the fixed bottom plate in air duct, the fixed bottom plate upper surface in the air duct
Outside is equipped with locating ring, and pressing plate pillar is equipped at the center on the upside of the template, and the upper end of the pressing plate pillar is equipped with branch and holds round
Plate is equipped with clamping screw at the center of the support board upper end, and the clamping screw is equipped with nut, the clamping screw
Outside is equipped with positioning pin, and the positioning pin is set to the upper end of support board, is equipped with transmission shaft, institute at the center on the downside of the template
The downside for stating platen below template is equipped with retarder, and the top of the retarder is equipped with through-hole, and the through-hole is set on platen, institute
The lower end for stating transmission shaft passes through through-hole and connects retarder, and the two sides of the platen lower end are equipped with stabilizer blade, the lower end of the stabilizer blade
Portion is equipped with electric machine support, and the both ends of the electric machine support are separately connected the stabilizer blade of two sides, and the upside of the electric machine support is equipped with master
Motor, the right end of the main motor are equipped with lower driving wheel, and the left end of the retarder is equipped with upper driving wheel, the lower driving wheel with
It is equipped with transmission belt between upper driving wheel, the downside of the platen right part is equipped with controller, the controller control stepper motor,
Main motor and travel switch are equipped with small through hole at the center of the pressing plate, and the outside of the small through hole is equipped with location hole, described fixed
Position hole matches with positioning pin.
The operation logic of the utility model: by the way that the air-duct spiral case body to crimping to be put on the fixed bottom plate in air duct, such as scheme
Shown in 12, because the inside of lower case is equipped with bulge loop, the downside of bulge loop forms groove, and groove is blocked with locating ring positioning, makes air duct
Volute body is accurately positioned on the fixed bottom plate in air duct, then air duct pressing plate is placed on upper housing, because of the shape of air duct pressing plate
Matching corresponding with the shape of upper housing, bolt pass through the small through hole on the pressing plate of air duct, and air duct pressing plate passes through location hole and positioning
Finger setting, nut are locked air duct pressing plate by clamping screw, are locked in air-duct spiral case body in the fixed plate of air duct；Air duct snail
After the crimping position adjustment of shell, controller, which powers off stepper motor, to be unclamped, by operating handwheel for upper crimping wheel and Rolldown hem
Wheel touches on the side of upper hem and lower hem, and controller opens main motor, and main motor rotates retarder, and retarder exports low turn
Quick-action power to transmission shaft, transmission shaft band moving template rotates, and air-duct spiral case body also follows rotation, and operator passes through handwheel or stepping
Motor can feed upper crimping wheel and last volume cincture, while template rotates, because guide wheel is walked about on template involute,
Crimping slot on upper crimping wheel carries out crimping to upper hem, and the crimping slot on last volume cincture carries out crimping to lower hem, works as sliding
When pedestal touches the stroke push rod of travel switch, controller control main motor stops operating, and stepper motor drives sliding bottom
It moves backward, crimping is completed；As shown in figure 13, E point be crimping after upper hem and lower hem, upper hem bend downward with it is upper solid
Deckle is connected and fixed, and lower hem is folded upward to be connected and fixed with lower fixed edge.
Finally it is pointed out that above embodiments are only the more representational examples of the utility model.Obviously, this is practical new
Type is not limited to the above embodiments, and acceptable there are many deformations.All foundation the technical essence of the utility model are to above embodiments
Made any simple modification, equivalent change and modification are considered as belonging to the protection scope of the utility model.
Claims (1)
1. a kind of hemming device for kitchen ventilator air duct crimping, including platen and air duct pressing plate, it is characterised in that the platen
Upper left side be equipped with L shape supporting plate, the left side of the L shape supporting plate upper end is equipped with screw rod fixing piece, in the screw rod fixing piece
It is equipped with internal thread hole at the heart, screw rod is equipped in the hole of the internal thread hole, the internal thread hole and screw rod are intermeshed, the spiral shell
The left end of bar is equipped with handwheel, and the right of the L shape supporting plate is equipped with supporting plate, and the screw rod passes through L shape supporting plate and connects supporting plate, described
The lower end of supporting plate is equipped with sliding bottom, and the supporting plate and the left side of sliding bottom junction are equipped with two pieces of reinforcing ribs, the sliding
The front and rear sides of pedestal are equipped with wiper block, and the wiper block is in inverted L shape, and the lower end of shown wiper block connects platen,
The upper end of the supporting plate is equipped with upper mounted plate, and the upper right side of the sliding bottom is equipped with rotating cylinder, and the rotating cylinder is set to the right side of supporting plate
It is square, it is equipped at the center of the rotating cylinder upper and lower ends equipped with shaft, the upper end of the shaft connects upper mounted plate, the shaft
Lower end connect sliding bottom, the junction of the shaft and upper mounted plate and sliding bottom is equipped with bearing, the sliding bottom
The platen of seat downside is equipped with sliding groove, is equipped with slide push rod at the center on the downside of the sliding bottom, the slide push rod
Upper end connects sliding bottom, and the slide push rod is set in sliding groove, and the lower end of the slide push rod is equipped with motion thread hole,
A drive lead screw is equipped in the hole in the motion thread hole, the drive lead screw and motion thread hole are intermeshed, the biography
The left end of dynamic screw rod is equipped with stepper motor, and the stepper motor is set to the lower left side of platen, and the right of the sliding bottom is equipped with
Travel switch, the travel switch are set on platen, and the left end of the travel switch is equipped with stroke push rod, the rotating cylinder lower end
The forward right side in portion is equipped with guide wheel fixed link, and the front end of the guide wheel fixed link is equipped with guide wheel, the middle part of the rotating cylinder right lateral side
Equipped with the first fixed link, the upper end of the rotating cylinder right lateral side is equipped with the second fixed link, and the front end of first fixed link is set
There is last volume cincture, the front end of second fixed link is equipped with upper crimping wheel, the upper bottom of the last volume cincture and upper crimping wheel
It sets identical, is equipped with crimping slot at the center on the outside of the upper crimping wheel and last volume cincture, the guide wheel fixed link is solid with first
A V-arrangement angle is formed between fixed pole and the second fixed link, the rear of the L shape supporting plate is equipped with spring anchor block, the spring
Spring is equipped between fixed block and the first fixed link, the upper right side of the platen is equipped with template, and the outside of the template is equipped with mould
Plate involute, the top of the template are equipped with the fixed bottom plate in air duct, and the outside of the fixed bottom plate upper surface in the air duct is equipped with positioning
It encloses, pressing plate pillar is equipped at the center on the upside of the template, the upper end of the pressing plate pillar is equipped with support board, and the branch is held round
Clamping screw is equipped at the center of plate upper end, the clamping screw is equipped with nut, and the outside of the clamping screw is equipped with positioning
Pin, the positioning pin are set to the upper end of support board, transmission shaft, fang platform under the template are equipped at the center on the downside of the template
The downside of plate is equipped with retarder, and the top of the retarder is equipped with through-hole, and the through-hole is set on platen, under the transmission shaft
End connects retarder across through-hole, and the two sides of the platen lower end are equipped with stabilizer blade, and the lower end of the stabilizer blade is equipped with motor branch
Frame, the both ends of the electric machine support are separately connected the stabilizer blade of two sides, and the upside of the electric machine support is equipped with main motor, the main electricity
The right end of machine is equipped with lower driving wheel, and the left end of the retarder is equipped with upper driving wheel, between the lower driving wheel and upper driving wheel
Equipped with transmission belt, the downside of the platen right part is equipped with controller, the controller control stepper motor, main motor and stroke
It switchs, small through hole is equipped at the center of the pressing plate, the outside of the small through hole is equipped with location hole, the location hole and positioning pin
Match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821348385.0U CN209109915U (en) | 2018-08-21 | 2018-08-21 | A kind of hemming device for kitchen ventilator air duct crimping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821348385.0U CN209109915U (en) | 2018-08-21 | 2018-08-21 | A kind of hemming device for kitchen ventilator air duct crimping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209109915U true CN209109915U (en) | 2019-07-16 |
Family
ID=67197270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821348385.0U Expired - Fee Related CN209109915U (en) | 2018-08-21 | 2018-08-21 | A kind of hemming device for kitchen ventilator air duct crimping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209109915U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856414A (en) * | 2018-08-21 | 2018-11-23 | 浙江澳尔电器有限公司 | A kind of hemming device for kitchen ventilator air duct crimping |
-
2018
- 2018-08-21 CN CN201821348385.0U patent/CN209109915U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856414A (en) * | 2018-08-21 | 2018-11-23 | 浙江澳尔电器有限公司 | A kind of hemming device for kitchen ventilator air duct crimping |
| CN108856414B (en) * | 2018-08-21 | 2024-02-02 | 浙江澳尔电器有限公司 | Hemming device for hemming air duct of range hood |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190716 |
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| CF01 | Termination of patent right due to non-payment of annual fee |