CN114208523A - Pruning cutter is picked in bionic structure tea garden - Google Patents
Pruning cutter is picked in bionic structure tea garden Download PDFInfo
- Publication number
- CN114208523A CN114208523A CN202111537898.2A CN202111537898A CN114208523A CN 114208523 A CN114208523 A CN 114208523A CN 202111537898 A CN202111537898 A CN 202111537898A CN 114208523 A CN114208523 A CN 114208523A
- Authority
- CN
- China
- Prior art keywords
- curve
- cutting teeth
- cutting
- tea
- tea garden
- 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.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
- A01G3/08—Other tools for pruning, branching or delimbing standing trees
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D46/00—Picking of fruits, vegetables, hops, or the like; Devices for shaking trees or shrubs
- A01D46/04—Picking of fruits, vegetables, hops, or the like; Devices for shaking trees or shrubs of tea
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/11—Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
Abstract
The invention discloses a tea garden picking and trimming cutter with a bionic structure, and relates to the technical field of tea picking. The tea garden picking and trimming cutter with the bionic structure comprises a rack, wherein a driving mechanism, a fixed blade and a movable blade are fixedly mounted on the rack, the driving mechanism is in transmission connection with the movable blade, the movable blade comprises a base body and a plurality of cutting teeth fixedly arranged on the base body, and the outer contours of the cutting edges of the cutting teeth are of the bionic structure. The invention discloses a tea garden picking and trimming cutter with a bionic structure, which is used for carrying out bionic design by utilizing biological cutting teeth and leaves, improving and optimizing the outline of a cutting edge of a cutting tooth of a movable blade, and has strong cutting capability, high working efficiency and low energy consumption when tea is picked or trimmed.
Description
Technical Field
The invention relates to the technical field of tea picking, in particular to a tea garden picking and trimming cutter with a bionic structure.
Background
The tea is one of important economic crops in China, and according to statistics, the tea garden picking area in China is about 246.05 ten thousand hectares, and the tea garden picking area accounts for more than 60% of the total planting area of the tea in the world. Tea, as an oriental pearl with a long history, has become an essential part of the daily life of the Chinese. With the continuous development of economy and culture, the requirements of people on healthy diet are increasingly improved, tea is favored by consumers by virtue of various effects of reducing blood pressure, diminishing inflammation, resisting cancer and the like, and tea drinking is gradually changed into fashion of modern life.
In recent years, tea production in China is rapidly developed, and the area and the yield are continuously increased. However, the tea industry in China is large and weak, large and not fine, the technological content and the mechanization level of tea products are low, and the continuous and healthy development of the tea industry is influenced. For tea pruning, the manual picking mode mainly adopted at present wastes time and labor, is low in efficiency, consumes a large amount of manpower and material resources during tea pruning, can save a large amount of power cost every year if consumption reduction is realized by optimizing pruning machines, and has important practical value and significance for sustainable development of tea gardens in China. Therefore, a pruning tool for the tea garden, which can reduce the resistance and the consumption, is urgently needed.
Disclosure of Invention
In view of the above problems, the invention aims to disclose a tea garden picking and trimming cutter with a bionic structure, which utilizes the cutting teeth and leaves of organisms to carry out bionic design, improves and optimizes the outline of the cutting edge of the cutting teeth of a movable blade, and has strong cutting capability, high working efficiency and low energy consumption when tea leaves are picked or trimmed.
The tea garden picking and trimming cutter with the bionic structure comprises a rack, wherein a driving mechanism, a fixed blade and a movable blade are fixedly mounted on the rack, the driving mechanism is in transmission connection with the movable blade, the movable blade comprises a base body and a plurality of cutting teeth fixedly arranged on the base body, and the outer contours of the cutting edges of the cutting teeth are of the bionic structure.
Further, the base member includes fixed connection's drive plate and curved cutting piece, and is a plurality of the cutting tooth is fixed to be set up on the cutting piece, still seted up a plurality of louvres and bar hole on the cutting piece, louvre and bar hole interval set up.
Through the design of bar hole and louvre, not only can reduce the temperature when the cutter uses to a certain extent, can also reduce the quality of movable blade simultaneously to a certain extent for it is lighter to use, is favorable to reducing the energy consumption.
Further, actuating mechanism includes driving motor, pulley assembly and fixed mounting at the epaxial cam of pulley assembly output, the spread groove has been seted up on the drive plate, the cam sets up in the spread groove and with spread groove shape phase-match.
Further, the belt pulley assembly comprises a first belt pulley and a second belt pulley which are connected through belt transmission, the first belt pulley is fixedly connected with an output shaft of the driving motor, and the second belt pulley is fixedly installed on the rack and coaxially arranged with the cam.
Further, the outer contour of the cutting tooth is in a bionic noctuid larva upper jaw incisor leaf structure, the noctuid larva upper jaw comprises five protruding cutting teeth of T1, T2, T3, T4 and T5, the outer contour line of the cutting tooth is a fitting curve of the T2, T3, T4 and T5 cutting teeth, namely, an A-B curve, a B-C curve, a C-D curve and a D-E curve are firstly connected to form a cutting tooth single-side outer contour curve, and then mirror images and connection are carried out to obtain a cutting tooth double-side outer contour curve.
Further, the curve equation of the a-B curve is:
Y＝4.73sin(0.4625x-0.1108)+0.2221sin(2.014x+0.4894)
wherein x belongs to [0,5.95] and the unit is mm;
the curve equation of the B-C curve is:
Y＝6.011sin(0.3697x+4.488)+0.2458sin(1.493x-0.6057)+0.0962sin(2.72x-4.469)
wherein: x belongs to [5.95,11.9] and is in mm;
the curve equation for the C-D curve is:
Y＝10.35sin(0.411x+3.113)+7.227sin(0.6095x+10.18)+0.4837sin(1.735x+17.3)
wherein: x belongs to [11.9,16.5] and is in mm;
the curve equation for the D-E curve is:
Y＝3.673sin(0.4098x+6.903)+0.0811sin(2.534x-23.19)
wherein: x ∈ [16.5,21.4] in mm.
Furthermore, the outer contour of the cutting teeth is of a bionic tea geometrid upper jaw cutting tooth leaf structure, the tea geometrid upper jaw comprises eight protruded cutting teeth of T1, T2, T3, T4, T5, T6, T7 and T8, the outer contour line of each cutting tooth is a fitting curve of the cutting teeth of T3, T4 and T5 sections, namely, the cutting teeth are connected into a single-side outer contour curve through an A-B curve, a B-C curve and a C-D curve, and then the two-side outer contour curves of the cutting teeth are obtained through mirroring and connection.
Further, the curve equation of the a-B curve is:
Y＝9.094sin(0.2902x-0.1011)+6.825sin(1.14x+0.7556)+6.214sin(1.169x+3.821)
wherein: x belongs to [0,10.7] and has the unit of mm;
the curve equation of the B-C curve is:
Y＝5.783sin(0.4539x+1.402)+0.408sin(1.649x+1.531)+84.1sin(3.859x+12.51)+84.14sin(3.857x-3.183)
wherein: x belongs to [10.7,17.7] and is in the unit of mm;
the curve equation for the C-D curve is:
Y＝10.4sin(0.9267x-4.396)+6.493sin(1.152x+6.82)
wherein: x ∈ [17.7,22.2] in mm.
Furthermore, the pitch of the cutting teeth is 30-35mm, and the height of the cutting teeth is 20-23 mm.
The invention has the beneficial effects that:
the invention discloses a tea garden picking and pruning tool with a bionic structure, which is designed in a bionic way by taking biological incisor leaves as prototypes and provides a bionics basis for the design of the structure of the tea tree pruning tool. The bionic tooth design is carried out on the cutting tooth of the movable blade by taking the cutting tooth blade at the front end of the upper jaw of the larva of the noctuid or the larva of the tea geometrid as a prototype, the geometric structure of the bionic tooth design is simulated, the cutting of the leaf blade of the tea tree by a pruning knife is facilitated, the power consumption is reduced, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic view of the construction of the tool of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic structural view of a movable blade according to a first embodiment of the present invention;
FIG. 4 is a scanning electron microscope image of upper palate front incised leaf of spodoptera exigua larva
FIG. 5 is a schematic diagram of a fitted curve according to a first embodiment of the present invention;
fig. 6 is a schematic structural view of a movable blade according to a second embodiment of the present invention;
FIG. 7 is a scanning electron microscope image of incised leaves at the front end of the palate of ectropis obliqua larvae;
FIG. 8 is a schematic view of a fitted curve according to a second embodiment of the present invention;
wherein, the fixed blade 1, the movable blade 2, the base body 21, the driving plate 211, the cutting blade 212, the cutting teeth 22, the heat dissipation holes 23, the strip-shaped holes 24, the upper support plate 3, the side plate 4, the positioning bolt 5, the driving motor 6, the cam 7, the connecting groove 8, the first belt pulley 9, the second belt pulley 10
Detailed Description
The present invention will be described in detail with reference to specific examples below:
example one
The cutter of the embodiment, as shown in fig. 1-5, comprises a frame, a driving mechanism, a fixed blade 1 and a movable blade 2 are fixedly mounted on the frame, the driving mechanism is in transmission connection with the movable blade 2, specifically, the frame comprises an upper supporting plate 3 and side plates 4, two ends of the fixed blade 1 are respectively fixedly mounted on the corresponding side plates 4, the movable blade 2 is arranged above the fixed blade 1 in parallel and is in contact with the fixed blade 1, the movable blade 2 comprises a base 21 and a plurality of cutting teeth 22 fixedly arranged on the base 21, the outer contour of the cutting edge of the cutting teeth 22 is in a bionic structure, a plurality of heat dissipation holes 23 and bar-shaped holes 24 are further formed on the cutting blade, through the design of the bar-shaped holes 24 and the heat dissipation holes 23, the temperature of the cutter during use can be reduced to a certain extent, meanwhile, the mass of the movable blade 2 can be reduced to a certain extent, so that the cutter is lighter to use, is beneficial to reducing energy consumption.
Actuating mechanism includes driving motor 6, pulley assembly and fixed mounting have been seted up at pulley assembly output epaxial cam 7 on drive plate 211, cam 7 set up in spread groove 8 and with spread groove 8 shape phase-match, pulley assembly includes first belt pulley 9 and second belt pulley 10 connected through belt drive, first belt pulley 9 and driving motor 6's output shaft fixed connection, second belt pulley 10 fixed mounting is in the frame, and with the coaxial setting of cam 7, when using, driving motor 6 rotates and drives first belt pulley 9 and rotate, first belt pulley 9 drives second belt pulley 10 through the belt and drives cam 7 again and rotate, thereby cam 7 and spread groove cooperate and drive blade 2 left and right sides reciprocating motion.
The outer contour of the cutting tooth 22 of the embodiment is of a bionic noctuid larva maxilla incisor leaf structure, the noctuid larva maxilla comprises five protruding cutting teeth of T1, T2, T3, T4 and T5, the outer contour line of the cutting tooth 22 is a fitting curve of the T2, T3, T4 and T5 cutting teeth, namely, an A-B curve, a B-C curve, a C-D curve and a D-E curve are firstly connected to form a cutting tooth single-side outer contour curve, and then mirror images and connections are carried out to obtain a cutting tooth double-side outer contour curve, the tooth pitch of the cutting tooth is 30-35mm, and the tooth height is 20-23 mm.
Specifically, the curve equation of the A-B curve is as follows:
Y＝4.73sin(0.4625x-0.1108)+0.2221sin(2.014x+0.4894)
wherein x belongs to [0,5.95] and the unit is mm;
the curve equation of the B-C curve is:
Y＝6.011sin(0.3697x+4.488)+0.2458sin(1.493x-0.6057)+0.0962sin(2.72x-4.469)
wherein: x belongs to [5.95,11.9] and is in mm;
the curve equation for the C-D curve is:
Y＝10.35sin(0.411x+3.113)+7.227sin(0.6095x+10.18)+0.4837sin(1.735x+17.3)
wherein: x belongs to [11.9,16.5] and is in mm;
the curve equation for the D-E curve is:
Y＝3.673sin(0.4098x+6.903)+0.0811sin(2.534x-23.19)
wherein: x ∈ [16.5,21.4] in mm.
Example two
Referring to fig. 1, 2, 6-8, the difference between the first embodiment and the second embodiment is that, in the cutter of the present embodiment, the outer profile of the cutting teeth 22 is in a bionic tea geometrid upper jaw cutting teeth leaf structure, the tea geometrid upper jaw comprises eight protruded cutting teeth of T1, T2, T3, T4, T5, T6, T7 and T8, the outer contour line of the cutting teeth 22 is a fitting curve of the cutting teeth of T3, T4 and T5 segments, that is, the cutting teeth are connected by an a-B curve, a B-C curve and a C-D curve to form a single-side outer profile curve of the cutting teeth, and then the cutting teeth are connected by mirroring, so as to obtain a double-side outer profile curve of the cutting teeth, wherein the pitch of the cutting teeth is 30-35mm, and the tooth height is 20-23 mm.
Specifically, the method comprises the following steps: the curve equation of the A-B curve is:
Y＝9.094sin(0.2902x-0.1011)+6.825sin(1.14x+0.7556)+6.214sin(1.169x+3.821)
wherein: x belongs to [0,10.7] and has the unit of mm;
the curve equation of the B-C curve is:
Y＝5.783sin(0.4539x+1.402)+0.408sin(1.649x+1.531)+84.1sin(3.859x+12.51)+84.14sin(3.857x-3.183)
wherein: x belongs to [10.7,17.7] and is in the unit of mm;
the curve equation for the C-D curve is:
Y＝10.4sin(0.9267x-4.396)+6.493sin(1.152x+6.82)
wherein: x ∈ [17.7,22.2] in mm.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (9)
1. The utility model provides a pruning cutter is picked in biomimetic structure tea garden, a serial communication port, which comprises a frame, fixed mounting has actuating mechanism, stationary blade and moving blade in the frame, actuating mechanism and moving blade transmission are connected, the moving blade includes the base member and a plurality of cutting teeth of fixed setting on the base member, the outline of the cutting edge of cutting tooth is biomimetic structure.
2. The cutter as claimed in claim 1, wherein the base comprises a driving plate and an arc-shaped cutting plate, the driving plate and the arc-shaped cutting plate are fixedly connected, a plurality of cutting teeth are fixedly arranged on the cutting plate, the cutting plate is further provided with a plurality of heat dissipation holes and bar-shaped holes, and the heat dissipation holes and the bar-shaped holes are arranged at intervals.
3. The tea garden harvesting and trimming cutter with bionic structure as claimed in claim 2, wherein the driving mechanism comprises a driving motor, a pulley assembly and a cam fixedly mounted on an output shaft of the pulley assembly, the driving plate is provided with a connecting groove, and the cam is arranged in the connecting groove and matched with the connecting groove in shape.
4. The tea garden harvesting cutter with bionic structure as claimed in claim 3, wherein the pulley assembly comprises a first pulley and a second pulley which are connected through a belt transmission, the first pulley is fixedly connected with the output shaft of the driving motor, and the second pulley is fixedly mounted on the frame and is coaxially arranged with the cam.
5. The tea garden harvesting and pruning tool with a bionic structure as claimed in any one of claims 1 to 4, wherein the outer contour of the cutting teeth is in a bionic noctuid larva maxilla cutting teeth leaf structure, the noctuid larva maxilla comprises five protruded cutting teeth of T1, T2, T3, T4 and T5, the outer contour lines of the cutting teeth are fitting curves of the T2, T3, T4 and T5 cutting teeth, namely, the A-B curve, the B-C curve, the C-D curve and the D-E curve are connected to form a cutting teeth single-side outer contour curve, and the cutting teeth double-side outer contour curves are obtained through mirroring and connection.
6. The biomimetic configuration tea garden harvesting and trimming tool of claim 5, wherein the curve equation of the A-B curve is:
Y＝4.73sin(0.4625x-0.1108)+0.2221sin(2.014x+0.4894)
wherein x belongs to [0,5.95] and the unit is mm;
the curve equation of the B-C curve is:
Y＝6.011sin(0.3697x+4.488)+0.2458sin(1.493x-0.6057)+0.0962sin(2.72x-4.469)
wherein: x belongs to [5.95,11.9] and is in mm;
the curve equation for the C-D curve is:
Y＝10.35sin(0.411x+3.113)+7.227sin(0.6095x+10.18)+0.4837sin(1.735x+17.3)
wherein: x belongs to [11.9,16.5] and is in mm;
the curve equation for the D-E curve is:
Y＝3.673sin(0.4098x+6.903)+0.0811sin(2.534x-23.19)
wherein: x ∈ [16.5,21.4] in mm.
7. The tea garden harvesting and trimming cutter with bionic structure as claimed in any one of claims 1 to 4, wherein the outer contour of the cutting teeth is in a bionic tea geometrid upper jaw cutting tooth leaf structure, the tea geometrid upper jaw comprises eight protruded cutting teeth of T1, T2, T3, T4, T5, T6, T7 and T8, the outer contour line of the cutting teeth is a fitting curve of the T3, T4 and T5 segments of cutting teeth, namely, a-B curve, a-C curve and a C-D curve are firstly connected to form a single-side outer contour curve of the cutting teeth, and then the two-side outer contour curves of the cutting teeth are obtained through mirror image and connection.
8. The biomimetic configuration tea garden harvesting and trimming tool of claim 7, wherein the curve equation of the A-B curve is:
Y＝9.094sin(0.2902x-0.1011)+6.825sin(1.14x+0.7556)+6.214sin(1.169x+3.821)
wherein: x belongs to [0,10.7] and has the unit of mm;
the curve equation of the B-C curve is:
Y＝5.783sin(0.4539x+1.402)+0.408sin(1.649x+1.531)+84.1sin(3.859x+12.51)+84.14sin(3.857x-3.183)
wherein: x belongs to [10.7,17.7] and is in the unit of mm;
the curve equation for the C-D curve is:
Y＝10.4sin(0.9267x-4.396)+6.493sin(1.152x+6.82)
wherein: x ∈ [17.7,22.2] in mm.
9. The biomimetic structured tea garden harvesting and trimming tool according to any one of claims 6 or 8, wherein the pitch of the cutting teeth is: 30-35mm and the tooth height is 20-23 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111537898.2A CN114208523A (en) | 2021-12-15 | 2021-12-15 | Pruning cutter is picked in bionic structure tea garden |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111537898.2A CN114208523A (en) | 2021-12-15 | 2021-12-15 | Pruning cutter is picked in bionic structure tea garden |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114208523A true CN114208523A (en) | 2022-03-22 |
Family
ID=80702651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111537898.2A Pending CN114208523A (en) | 2021-12-15 | 2021-12-15 | Pruning cutter is picked in bionic structure tea garden |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114208523A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101461535A (en) * | 2009-01-14 | 2009-06-24 | 江南大学 | Method for preparing antioxidation gelatine membrane containing tea polyphenol-chitosan nano grain |
| CN105144982A (en) * | 2015-06-17 | 2015-12-16 | 吉林大学 | Corn stubble cutting device with bionic structure |
| CN109156195A (en) * | 2018-09-18 | 2019-01-08 | 赣州双木科技有限公司 | A kind of tea place harvesting robot clipping device and control method |
| CN113039936A (en) * | 2021-03-16 | 2021-06-29 | 浙江理工大学 | Automatic profiling tea picking device with ultrasonic ranging function and tea picking method thereof |
| CN113647254A (en) * | 2021-08-26 | 2021-11-16 | 江苏大学 | Bionic chopping knife, straw chopping device and combine harvester |
-
2021
- 2021-12-15 CN CN202111537898.2A patent/CN114208523A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101461535A (en) * | 2009-01-14 | 2009-06-24 | 江南大学 | Method for preparing antioxidation gelatine membrane containing tea polyphenol-chitosan nano grain |
| CN105144982A (en) * | 2015-06-17 | 2015-12-16 | 吉林大学 | Corn stubble cutting device with bionic structure |
| CN109156195A (en) * | 2018-09-18 | 2019-01-08 | 赣州双木科技有限公司 | A kind of tea place harvesting robot clipping device and control method |
| CN113039936A (en) * | 2021-03-16 | 2021-06-29 | 浙江理工大学 | Automatic profiling tea picking device with ultrasonic ranging function and tea picking method thereof |
| CN113647254A (en) * | 2021-08-26 | 2021-11-16 | 江苏大学 | Bionic chopping knife, straw chopping device and combine harvester |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203344080U (en) | Pickled vegetable cutting device | |
| CN110549384B (en) | Cucumber slicing equipment for cucumber processing | |
| CN103586905B (en) | Clamp type banana stalk cutting device | |
| CN210352914U (en) | Meat product processing is with comminution device | |
| CN114208523A (en) | Pruning cutter is picked in bionic structure tea garden | |
| CN216492076U (en) | Tea leaf picking cutter | |
| CN205021654U (en) | Asparagus root cutter with adjustable cut root range | |
| CN203058076U (en) | Royal jelly generation and wax cutting device | |
| CN208972015U (en) | A kind of electric reciprocating saw formula pepper picking tool | |
| CN208159377U (en) | A kind of animal husbandry herbage rolling cutting device | |
| CN201078929Y (en) | Electric and electric heating leaf shearing machine for tobacco seedling | |
| CN202635452U (en) | Convenient and fast shaved noodle producing machine | |
| CN211982685U (en) | Improved electric portable tea plucking machine | |
| CN213719675U (en) | Slaughtering operation equipment | |
| CN2138892Y (en) | Noodles machine and combined cutting set | |
| CN113681630A (en) | Artificial soybean protein meat copying cutting device | |
| CN108617288B (en) | Straw reducing mechanism convenient to energy saving just reaches promotion work efficiency | |
| CN2626240Y (en) | Dough sheet machine | |
| CN203416610U (en) | Electric-driven beet leaf removing and top cutting machine | |
| CN212653561U (en) | Nougat cutting assembly line | |
| CN214265859U (en) | Pork processing dicing device | |
| CN218398391U (en) | Glossy ganoderma slicer | |
| CN2653893Y (en) | Special shaved noodle knife for wheat rolling mill | |
| CN211682526U (en) | Tag processing and cutting device for livestock meat product | |
| CN219812543U (en) | Fresh corn harvesting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |