CN207958674U - A kind of transmission of wrapped belt and fin-folding mechanism - Google Patents
A kind of transmission of wrapped belt and fin-folding mechanism Download PDFInfo
- Publication number
- CN207958674U CN207958674U CN201721874240.XU CN201721874240U CN207958674U CN 207958674 U CN207958674 U CN 207958674U CN 201721874240 U CN201721874240 U CN 201721874240U CN 207958674 U CN207958674 U CN 207958674U
- Authority
- CN
- China
- Prior art keywords
- wrapped belt
- cylinder
- overturning
- guide plate
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
A kind of wrapped belt transmission of the utility model and fin-folding mechanism, including slide, feeding material component, cutting assembly and folding tail component；Wrapped belt guiding mouth is set between slide and wrapped belt guide plate；Wrapped belt guide plate is equipped with the feeding material component of cooperation slide feeding；Feeding material component includes the rub wheel of servo motor driving；Cylinder is connected on feeding material component；Cylinder pushes and pulls feeding material component to adjust the exposure level of rub wheel and wrapped belt；It is combined with cutting assembly between wrapped belt guide plate and wrapped belt guiding mouth；The setting folding tail component between wrapped belt guiding mouth and the entrance of slide；Cutting assembly includes at least and cuts the upper slitter driven with universal driving shaft；Roll over the overturning guide plate that tail component includes at least transverse shifting；Overturning guide plate is equipped with the overturning movable plate back and forth lifted；Overturn the end of movable plate jacking wrapped belt and by it in bound edge tape motion direction crimping to overturning fixed board；Overturn the wrapped belt pressing plate that Pneumatic elevation is equipped with above fixed board；It is additionally provided with vacuum generator below overturning fixed board.
Description
Technical field
The utility model is related to ground cushion wrapped belts to send folded structure field, and tail machine is transmitted and rolled over more particularly to a kind of wrapped belt
Structure.
Background technology
Taping machine is a kind of sewing device for being used for completing to bind off during producing ground cushion, foot pad.In ground cushion industry, matter
Ground comparatively it is harder cut out after, cutting off the material at the fabric side seam come can scatter because the hardness of itself is relatively high
Or warpage, so need bound edge, the main purpose of bound edge is that the edge of cut-parts will not be dissipated is de-, while with synchronizing at side seam
Vehicle copies a circle side and scatters so as not to edge of materials, can also play beautiful effect.But carrying out the automatic bound edge of fabric in wrapped belt
When bound edge take the lead and bound edge magnetic tape trailer must be beveled tip angle, wrapped belt needs after being sewn on ground cushion in the oblique sharp corner of tail end of wrapped belt
Carry out folding tail process.It rolls over tail cooperation slide feeding and needs smooth transition, the interruption of feeding cannot be generated, bound edge processing is avoided to make
At influence.Therefore, the feeding cooperation wrapped belt cut-out folding tail of wrapped belt is the important research for solving ground cushion bound edge automated production
Object.
Utility model content
The utility model solves bound edge mainly solving the technical problems that providing a kind of transmission of wrapped belt and fin-folding mechanism
Wrapped belt after rolling over tail with slide cooperation wrapped belt and is smoothly sent out slide, reaches machining area by band self-feeding process
Problem.
In order to solve the above technical problems, the technical solution that the utility model uses be to provide a kind of transmission of wrapped belt and
Fin-folding mechanism, including slide, feeding material component, cutting assembly and folding tail component；The slide is docked with wrapped belt guide plate；It is drawing
Wrapped belt guiding mouth is set between cylinder and wrapped belt guide plate；Wrapped belt guide plate is equipped with the feeding of cooperation slide feeding
Component；The feeding material component includes the rub wheel of servo motor driving；Third cylinder is connected on the feeding material component；Third cylinder pushes away
Feeding material component is drawn to adjust the exposure level of rub wheel and wrapped belt；Coordinate between the wrapped belt guide plate and wrapped belt guiding mouth
There is the cutting assembly of cut-out wrapped belt；The folding tail component is set between wrapped belt guiding mouth and the entrance of slide；Cut-out group
Part includes at least and cuts the upper slitter driven with universal driving shaft；The folding tail component includes at least the overturning guide plate of transverse shifting；Institute
It states overturning guide plate and is equipped with the overturning movable plate back and forth lifted；Overturn the end of movable plate jacking wrapped belt and by it along wrapped belt
In direction of motion crimping to overturning fixed board；The wrapped belt pressing plate of Pneumatic elevation is equipped with above the overturning fixed board；In overturning fixed board
Lower section be additionally provided with vacuum generator.
Preferably, the bottom of the wrapped belt guide plate is equipped with substrate；The feeding material component includes that setting is solid in wheel group
On fixed board：First synchronous pulley, the second synchronous pulley, third synchronous pulley and tensioning wheel；One article of synchronous belt links the simultaneously
One synchronous pulley, the second synchronous pulley, third synchronous pulley and tensioning wheel；Second synchronous pulley is directly driven by servo motor
It is dynamic；Respectively match unification rub wheel on the mandrel of the first synchronous pulley and the second synchronous pulley；The wrapped belt guide plate is equipped with
With the guide groove of rub wheel cooperation；The bottom of wheel group fixed plate is set there are two wheel group support base, is passed through between wheel group support base and substrate
Shaft, which is realized, to be relatively rotated；The third cylinder is connected at the top of wheel group fixed plate；Third cylinder push away driving wheel group fixed plate around
Shaft rotates；Third cylinder is fixed workpiece by third cylinder and is connected on substrate.
Preferably, the cutting assembly includes the 4th cylinder；4th cylinder is connected to packet by the 4th cylinder fixing piece
On sideband guide plate；Interlocking bar is connected on the piston rod of 4th cylinder；The other end of interlocking bar is connected to the universal driving shaft
On；Interlocking bar overturning drives universal driving shaft rotation；The other end of universal driving shaft fixes the upper slitter；The upper slitter is being wrapped with setting is cut
The inlet of sideband guiding mouth.
Preferably, the overturning guide plate is by the second cylinder crosswise pushing；Second cylinder is fixed by the second cylinder
Part is connected on the wrapped belt guide plate；Be connected an air cylinder fixed plate on the piston of second cylinder；Air cylinder fixed plate
Bottom connects the overturning guide plate；Guide plate is overturn equipped with the turning groove in raised tip-angled shape；The overturning movable plate passes through
The shaft end of its both sides coordinates in turning groove；The bottom edge of the turning groove is not higher than the feed level of wrapped belt, and turning groove is determined
Side is not less than the feed level of wrapped belt；The overturning fixed board is located at the side of overturning movable plate；It is also set in the air cylinder fixed plate
It is equipped with the first flexible vertically cylinder；A horizontally disposed wrapped belt pressing plate is connected on the piston rod of first cylinder；
The folding trailing edge of the wrapped belt pressing plate and overturning fixed board backfin wrapped belt.
The utility model has the beneficial effects that：A kind of transmission of wrapped belt and fin-folding mechanism are provided,.
Description of the drawings
Fig. 1 is the structure chart of a kind of wrapped belt transmission of the utility model and fin-folding mechanism；
Fig. 2 is the structure chart view of the fuel-injected shipboard of the utility model；
Fig. 3 is the control principle drawing of a kind of transmission of wrapped belt and fin-folding mechanism；
The label of each component is as follows in attached drawing：1, slide；2, the second rub wheel；3, second driven shaft；4, the first copper bush；5、
First synchronous pulley；6, the second synchronous pulley；7, expansion tightening wheel；8, first driven shaft；9, synchronous belt；10, third synchronous pulley；
11, the first cylinder；12, air cylinder fixed plate；13, servo motor；14, the second cylinder；15, third cylinder；16, the first flake axis
It holds；17, wheel group fixed plate；18, wheel group connecting plate；19, first round group support base；20, the first cylinder fixing piece；21, substrate；
22, wrapped belt is oriented to bottom plate；23, wrapped belt defelctor apron；24, the second cylinder fixing piece；25, third cylinder fixing piece；26,
Four cylinders；27, the second flake bearing 28, interlocking bar；29, spring；30, universal driving shaft；31, the first oil-free copper sheathing；32, it first rubs with the hands
Wheel；33, the second copper bush；34, the second wheel group support base；35, the second oil-free copper sheathing；36, upper slitter fixing piece；37, it cuts；38、
Upper slitter；39, wrapped belt guiding mouth；40, guide plate is overturn；41, movable plate is overturn；42, fixed board is overturn；43, wrapped belt pressing plate；44、
Wrapped belt；45, vacuum generator.
Specific implementation mode
The preferred embodiment of the utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear to be made to the scope of protection of the utility model
Define.
Attached drawing 1 to 3 is please referred to, the utility model embodiment includes：
A kind of transmission of wrapped belt and fin-folding mechanism, including slide 1, feeding material component, cutting assembly and folding tail component.Slide 1
It is docked with wrapped belt guide plate, wrapped belt guiding mouth 39 is set between slide 1 and wrapped belt guide plate.Wrapped belt guide plate packet
Include upper and lower closing lid：Wrapped belt is oriented to bottom plate 22 and 23 plate of wrapped belt guide cover, and the bottom of wrapped belt guide plate is equipped with substrate
21, wrapped belt guide plate is equipped with the feeding material component of cooperation 1 feeding of slide.Feeding material component is the rub wheel that servo motor 13 drives；
Third cylinder 15 is connected on feeding material component；Third cylinder 15 pushes and pulls feeding material component to adjust rub wheel and wrapped belt 44
Exposure level；The cutting assembly of cut-out wrapped belt is combined between wrapped belt guide plate and wrapped belt guiding mouth 39；In wrapped belt
Setting folding tail component between guiding mouth 39 and the entrance of slide 1；Cutting assembly include at least cut 37 and universal driving shaft 30 drive
Upper slitter 38；Roll over the overturning guide plate 40 that tail component includes at least transverse shifting；Overturning guide plate 40 is turned over equipped with what is back and forth lifted
Rotor plate 41；Overturning movable plate 41 jack the end of wrapped belt 44 and by it along 44 direction of motion crimping of wrapped belt to overturning fixed board
On 42；Overturn the wrapped belt pressing plate 43 that 42 top of fixed board is equipped with Pneumatic elevation；It is additionally provided with vacuum hair in the lower section of overturning fixed board 42
Raw device 45.
Feeding material component includes being arranged in wheel group fixed plate 17：First synchronous pulley 5, the second synchronous pulley 6, third are same
Walk belt wheel 10 and tensioning wheel 7.One synchronous belt 9 while link the first synchronous pulley 5, the second synchronous pulley 6, third synchronous pulley
10 and tensioning wheel 7.Second synchronous pulley 6 is directly driven by servo motor 13, in the first synchronous pulley 5 and the second synchronous pulley 6
Mandrel on respectively match a unification rub wheel, rub wheel is co-axially mounted by the synchronous pulley that acts on of copper bush.First synchronous pulley 5
Mandrel is first driven shaft 8, and the first rub wheel 32 is installed with first driven shaft 8 by the first copper bush 4；Third synchronous pulley
10 mandrel is second driven shaft 3, and the second rub wheel 2 is installed with second driven shaft 3 by the second copper bush 33；Tensioning wheel 7
It is set between the second synchronous pulley 6 and third synchronous pulley 10.Wrapped belt guide plate is equipped with the guide groove coordinated with rub wheel；Wheel
The bottom of group fixed plate 17 is set there are two wheel group support base：First round group support base 19 and the second wheel group support base 34.Wheel group branch
It supports and realizes that relative rotation, shaft are connected on the base plate (21 by wheel group connecting plate 18 by shaft between seat and substrate 21.Wheel group
The top of fixed plate 17 is connected with third cylinder 15；The piston rod of third cylinder 15 is fixed on wheel group by the first flake bearing 16
In fixed plate 17, third cylinder 15 pushes away driving wheel group fixed plate 17 and rotates around the axis；Third cylinder 15 passes through third cylinder regular worker
Part 25 is connected on substrate 21.
Cutting assembly includes the 4th cylinder 26；4th cylinder 26 is connected to wrapped belt by the 4th cylinder fixing piece 20 and is oriented to
On plate；Interlocking bar 28 is connected by the second flake bearing 27 on the piston rod of 4th cylinder 26；The other end of interlocking bar 28 connects
To universal driving shaft 30；The overturning of interlocking bar 28 drives 30 rotation of universal driving shaft；The other end of universal driving shaft 30 is solid by upper slitter fixing piece 36
Determine upper slitter 38；Upper slitter and cutting is arranged in the inlet of wrapped belt guiding mouth.It is oriented on bottom plate 22 in wrapped belt and is equipped with cooperation connection
The axis hole of moving axis 30 coordinates universal driving shaft by the first oil-free copper sheathing 31 and the second oil-free copper sheathing 35 respectively at the both ends of axis hole
30.A spring 29 is further sleeved on universal driving shaft 30, the spring 29 act on interlocking bar 28 and wrapped belt be oriented to bottom plate 22 it
Between.
Guide plate is overturn by 14 crosswise pushing of the second cylinder；Second cylinder 14 is connected to bound edge by the second cylinder fixing piece 24
On band guide plate；Be connected an air cylinder fixed plate 12 on the piston of second cylinder；The bottom connection overturning of air cylinder fixed plate 12 is oriented to
Plate 40；Guide plate 40 is overturn equipped with the turning groove in raised tip-angled shape；Movable plate 41 is overturn by the shaft end cooperation of its both sides to exist
In turning groove；The bottom edge of turning groove is not higher than the feed level of wrapped belt 44, deckle the sending not less than wrapped belt 44 of turning groove
Material height；Overturn the side that fixed board 42 is located at overturning movable plate 41；The first flexible vertically gas is additionally provided in air cylinder fixed plate 12
Cylinder 11；A horizontally disposed wrapped belt pressing plate 43 is connected on the piston rod of first cylinder 11；Wrapped belt pressing plate 43 and overturning fixed board
The folding trailing edge of 42 backfin wrapped belts 44.
Wrapped belt 44 penetrates in the clip slot that wrapped belt is oriented between bottom plate 22 and wrapped belt defelctor apron 23, servo motor 13
Rotation drives the first rub wheel 2, the second rub wheel 32 by the wheel group of synchronous pulley, expansion tightening wheel 7, the composition of synchronous belt 9, and first rubs with the hands
Taking turns the 2, second rub wheel 32, (this distance is set by servo parameter, with specific reference to sewing type the submitting slide mouth of wrapped belt 44 20mm
Number carry out fixed length), servo motor 13 stalls, and third cylinder 15 stretches out at this time, and two rub wheels is made to be detached from wrapped belt 44.Fabric enters slide
1, tooth, the eedle of the rubbing and sewing machine itself by fabric are automatically taken wrapped belt out of, at this point, the mechanism only takes up bound edge
Guiding role.Fabric bound edge is to ending processing stage, and wrapped belt beveled tip angle notch is immediately below upper slitter 38 at this time, the 4th cylinder 26
It stretches out, cuts off wrapped belt 44.Second cylinder 14 stretches out, and drives overturning guide plate 40, is turned over to drive overturning movable plate 41 to do 180 °
Turn, realizes that the auto-folder of bound edge tail, vacuum generator 45 are opened, the double-deck wrapped belt is sucked in overturning fixed board.Second cylinder
After 14 retract, the wrapped belt 44 rolled well is pushed down in the stretching of the first cylinder 11, and vacuum generator 45 is closed, and sewing machine head operation will be automatic
The wrapped belt 44 rolled well is taken out of and realizes ending function.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Using equivalent structure or equivalent flow shift made by the utility model description, it is applied directly or indirectly in other phases
The technical field of pass, is equally included in the patent within the scope of the utility model.
Claims (4)
1. a kind of wrapped belt transmission and fin-folding mechanism, it is characterised in that：Including slide, feeding material component, cutting assembly and folding tail group
Part；The slide is docked with wrapped belt guide plate；Wrapped belt guiding mouth is set between slide and wrapped belt guide plate；Wrapped belt
Guide plate is equipped with the feeding material component of cooperation slide feeding；The feeding material component includes the rub wheel of servo motor driving；Institute
State connection third cylinder on feeding material component；Third cylinder pushes and pulls feeding material component to adjust the exposure level of rub wheel and wrapped belt；Institute
State the cutting assembly that cut-out wrapped belt is combined between wrapped belt guide plate and wrapped belt guiding mouth；In wrapped belt guiding mouth and drawing
The folding tail component is set between the entrance of cylinder；Cutting assembly includes at least and cuts the upper slitter driven with universal driving shaft；The folding tail
Component includes at least the overturning guide plate of transverse shifting；The overturning guide plate is equipped with the overturning movable plate back and forth lifted；Overturning
Movable plate jacks the end of wrapped belt and by it in bound edge tape motion direction crimping to overturning fixed board；Above the overturning fixed board
Wrapped belt pressing plate equipped with Pneumatic elevation；It is additionally provided with vacuum generator below overturning fixed board.
2. a kind of wrapped belt transmission according to claim 1 and fin-folding mechanism, it is characterised in that：The wrapped belt guide plate
Bottom be equipped with substrate；The feeding material component includes being arranged in wheel group fixed plate：First synchronous pulley, the second synchronous belt
Wheel, third synchronous pulley and tensioning wheel；The first synchronous pulley of linkage, the second synchronous pulley, third synchronize one synchronous belt simultaneously
Belt wheel and tensioning wheel；Second synchronous pulley is directly driven by servo motor；In the first synchronous pulley and the second synchronous pulley
Mandrel on respectively match a unification rub wheel；The wrapped belt guide plate is equipped with the guide groove coordinated with rub wheel；The bottom of wheel group fixed plate
Portion is set there are two wheel group support base, is passed through shaft between wheel group support base and substrate and is realized and relatively rotates；The top of wheel group fixed plate
Portion is connected with the third cylinder；Third cylinder pushes away driving wheel group fixed plate and rotates around the axis；Third cylinder is solid by third cylinder
Determine workpiece to be connected on substrate.
3. a kind of wrapped belt transmission according to claim 1 and fin-folding mechanism, it is characterised in that：The cutting assembly includes
4th cylinder；4th cylinder is connected to by the 4th cylinder fixing piece on wrapped belt guide plate；The piston rod of 4th cylinder
Upper connection interlocking bar；The other end of interlocking bar is connected on the universal driving shaft；Interlocking bar overturning drives universal driving shaft rotation；Universal driving shaft
The other end fix the upper slitter；The upper slitter and cutting is arranged in the inlet of wrapped belt guiding mouth.
4. according to a kind of wrapped belt transmission according to claim 1 and fin-folding mechanism, it is characterised in that：The overturning is oriented to
Plate is by the second cylinder crosswise pushing；Second cylinder is connected to by the second cylinder fixing piece on the wrapped belt guide plate；Institute
State the air cylinder fixed plate that is connected on the piston of the second cylinder；The bottom of air cylinder fixed plate connects the overturning guide plate；Overturning is led
It is equipped with the turning groove in raised tip-angled shape to plate；The overturning movable plate is coordinated by the shaft end of its both sides in turning groove；Institute
The bottom edge for stating turning groove is not higher than the feed level of wrapped belt, and the deckle of turning groove is not less than the feed level of wrapped belt；It is described
Overturn the side that fixed board is located at overturning movable plate；The first flexible vertically cylinder is additionally provided in the air cylinder fixed plate；Described
A horizontally disposed wrapped belt pressing plate is connected on the piston rod of one cylinder；The wrapped belt pressing plate and overturning fixed board backfin packet
The folding trailing edge of sideband.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721874240.XU CN207958674U (en) | 2017-12-28 | 2017-12-28 | A kind of transmission of wrapped belt and fin-folding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721874240.XU CN207958674U (en) | 2017-12-28 | 2017-12-28 | A kind of transmission of wrapped belt and fin-folding mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207958674U true CN207958674U (en) | 2018-10-12 |
Family
ID=63730395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721874240.XU Expired - Fee Related CN207958674U (en) | 2017-12-28 | 2017-12-28 | A kind of transmission of wrapped belt and fin-folding mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207958674U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130658A (en) * | 2017-12-28 | 2018-06-08 | 苏州匠博智能科技有限公司 | A kind of wrapped belt transmission and fin-folding mechanism |
| CN110117876A (en) * | 2019-03-12 | 2019-08-13 | 苏州匠博智能科技有限公司 | A kind of feed device facilitating sewing bound edge |
-
2017
- 2017-12-28 CN CN201721874240.XU patent/CN207958674U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130658A (en) * | 2017-12-28 | 2018-06-08 | 苏州匠博智能科技有限公司 | A kind of wrapped belt transmission and fin-folding mechanism |
| CN108130658B (en) * | 2017-12-28 | 2023-12-29 | 苏州匠博智能科技有限公司 | Wrapping band conveying and tail folding mechanism |
| CN110117876A (en) * | 2019-03-12 | 2019-08-13 | 苏州匠博智能科技有限公司 | A kind of feed device facilitating sewing bound edge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105133206B (en) | A kind of inkle loom with folding material structure | |
| CN207958674U (en) | A kind of transmission of wrapped belt and fin-folding mechanism | |
| CN102345212B (en) | Pneumatic type automatic trousers knot machine | |
| CN105113131B (en) | Lateral incision knife bound edge crosspointer sewing machine for covering chain stitch | |
| CN105133205B (en) | A kind of ribbon processing method for flap | |
| CN104250888B (en) | A kind of efficiently stop mechanism for towel machine | |
| CN105936141B (en) | A kind of wire rope handling refuse bag drawstring flush mounting | |
| CN104233632B (en) | A kind of seam device for mark | |
| CN108532142B (en) | Floor mat edge covering machine | |
| CN105015021B (en) | A kind of full-automatic paper bowl overlay film cutting machine with paper roll set roller function | |
| CN204898271U (en) | Processingequipment binds off | |
| CN105133195B (en) | A kind of inkle loom with press material structure | |
| CN205062406U (en) | Inkle loom with roll over material structure | |
| CN207699799U (en) | A kind of soft fabric control mechanism | |
| CN108130658A (en) | A kind of wrapped belt transmission and fin-folding mechanism | |
| CN205685821U (en) | A kind of wire rope handling refuse bag stay cord flush mounting | |
| CN205062397U (en) | A inkle loom for tongue processing | |
| CN105133200B (en) | A kind of inkle loom for flap processing | |
| CN210657431U (en) | Special roll of surface fabric section seam device | |
| CN104762760B (en) | A kind of guider for transporting sewing machine | |
| CN103981642B (en) | Self-feeding flat seam machine | |
| CN204265976U (en) | One is bound off processing unit (plant) | |
| CN202576870U (en) | Conveying structure for processing magic tape | |
| CN208087894U (en) | A kind of wrapped belt Zhe Song mechanisms | |
| CN209720065U (en) | Intelligent high-speed case unpacker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 13 Shitian Road, Yangchenghu Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: SUZHOU JIANGBO INTELLIGENT TECH Co.,Ltd. Address before: No. 3 Shuangqi Road, Wuzhong Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU JIANGBO INTELLIGENT TECH Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20211228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |