CN114607674A - Fixed-axis linear traveling vacuum cylinder - Google Patents
Fixed-axis linear traveling vacuum cylinder Download PDFInfo
- Publication number
- CN114607674A CN114607674A CN202210437294.9A CN202210437294A CN114607674A CN 114607674 A CN114607674 A CN 114607674A CN 202210437294 A CN202210437294 A CN 202210437294A CN 114607674 A CN114607674 A CN 114607674A
- Authority
- CN
- China
- Prior art keywords
- piston
- cylindrical cavity
- cylinder body
- cylinder
- vacuum
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
- B66C1/0237—Multiple lifting units; More than one suction area
- B66C1/0243—Separate cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
- B66C13/14—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices to load-engaging elements or motors associated therewith
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Actuator (AREA)
Abstract
The invention relates to the technical field of vacuum cylinders and discloses a fixed-axis linear traveling vacuum cylinder which comprises a cylinder body, wherein a second cylindrical cavity is arranged in the cylinder body, a first cylindrical cavity is arranged at the bottom of the second cylindrical cavity, the first cylindrical cavity and the second cylindrical cavity are arranged in a stepped manner, a piston is coaxially arranged in the cylinder body, a piston head is arranged at the top of the piston, and the piston head moves up and down along the second cylindrical cavity; the piston is of a hollow structure with the upper end and the lower end communicated with each other, the top of the piston head is provided with an opening communicated with the piston, and the top of the side surface of the second cylindrical cavity is provided with an air outlet so that the interior of the piston is communicated with the interior of the cylinder body; the other end of the piston extends out of the cylinder body from the first cylindrical cavity, the bottom of the cylinder body is coaxially connected with a shaft cylinder, the shaft cylinder and the piston are coaxially arranged, and at least one group of arranged ball holes are formed in the inner surface of the shaft sleeve. The piston is limited by the ball and the limiting groove, only can stretch and retract and cannot rotate, so that the piston is fixed in the circumferential direction and can only do axial linear motion.
Description
Technical Field
The invention relates to the technical field of vacuum cylinders, in particular to a fixed-axis linear running vacuum cylinder.
Background
The cylinder is a mechanism for converting the pressure of compressed air into mechanical energy through pneumatic transmission, a cylinder piston realizes reciprocating motion under the pushing of a piston head, and the piston head can rotate in a cylinder body, so that the circumferential position of the piston is difficult to fix while the cylinder reciprocates, and the position of the piston can deflect after long-time use, so that the fixed-axis linear running vacuum cylinder is provided.
Disclosure of Invention
Aiming at the defects of the existing vacuum cylinder, the invention provides a fixed-axis straight-line running vacuum cylinder which has the advantage that a piston cannot rotate, and solves the problems in the background technology.
The invention provides the following technical scheme:
a designed fixed-axis linear running vacuum cylinder comprises a cylinder body, wherein a second cylindrical cavity is arranged in the cylinder body, a first cylindrical cavity is arranged at the bottom of the second cylindrical cavity, the first cylindrical cavity and the second cylindrical cavity are arranged in a stepped mode, the cylinder body is coaxially provided with a piston, a piston head is arranged at the top of the piston, and the piston head moves up and down along the second cylindrical cavity;
the other end of the piston extends out of the cylinder body from the first cylindrical cavity, the bottom of the cylinder body is coaxially connected with a shaft cylinder, the shaft cylinder and the piston are coaxially arranged, a shaft sleeve is fixedly arranged in the shaft cylinder, at least one group of arranged ball holes are formed in the inner surface of the shaft sleeve, the number of the ball holes in each group is A, A is larger than or equal to 1, the ball holes are arranged at intervals along the axial line direction of the cylinder body, balls are arranged in each ball hole, and the balls extend into the shaft sleeve;
limiting grooves with the number and the positions corresponding to the ball holes are formed in the side face of the piston, and each group of balls are arranged in the limiting grooves; the cylinder body at the first cylindrical cavity is provided with an air suction interface;
the top of the cylinder body is provided with a sealing end cover, the top of the piston is inserted into the piston head and is in threaded connection with the piston head, a flange is arranged on the inner wall of the cylinder body between the shaft cylinder and the first cylindrical cavity, springs are arranged in the first cylindrical cavity and the second cylindrical cavity, the springs are sleeved on the piston, and two ends of the springs are respectively in contact with the flange and the piston head.
Preferably, the suction interface is internally connected with a negative pressure device through a pipeline.
Preferably, the bottom of piston is equipped with vacuum chuck, and vacuum chuck's top is installed on the installation head, and the installation head is hollow structure and threaded connection inside the piston bottom, installs the filter screen in the vacuum chuck.
Preferably, the shaft sleeve and the shaft barrel are fixed through interference fit and glue.
Preferably, the diameter of the opening is larger than that of the gas outlet, so that the air inflow of the opening is larger than the gas flow rate of the gas outlet.
Compared with the existing vacuum cylinder, when the air cylinder is used, only a negative pressure device is connected to the air suction port, air exchange is not carried out at two ends of the cylinder body, the piston is limited by the ball and the limiting groove, and only stretching and rotation can be carried out, so that the piston is fixed in the circumferential direction and only can do axial linear motion.
Drawings
FIG. 1 is a schematic view of the piston of the present invention being lowered;
FIG. 2 is a schematic view of the piston lift of the present invention;
FIG. 3 is a schematic view of the piston of the present invention retracted to the top of the cylinder.
In the figure: the vacuum suction device comprises a cylinder body 1, a piston head 2, a sealing end cover 3, an air outlet 4, an air suction interface 5, a ball 6, a limiting groove 7, a shaft sleeve 8, a piston 9, a mounting head 10, a shaft barrel 11, a first cylindrical cavity 12, a second cylindrical cavity 13, a spring 14, a flange 15, a ball hole 16, an opening 17 and a vacuum sucker 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a fixed-axis linear travel vacuum cylinder comprises a cylinder body 1, wherein a second cylindrical cavity 13 is arranged in the cylinder body 1, a first cylindrical cavity 12 is arranged at the bottom of the second cylindrical cavity 13, the first cylindrical cavity 12 and the second cylindrical cavity 13 are arranged in a stepped manner, a piston 9 is coaxially arranged in the cylinder body 1, a piston head 2 is installed at the top of the piston 9, the piston head 2 moves up and down along the second cylindrical cavity 13, the top of the piston 9 is inserted into the piston head 2, and the piston head are in threaded connection;
the piston 9 is a hollow structure with the upper end and the lower end communicated with each other, the top of the piston head 2 is provided with an opening 17 communicated with the piston 9, as shown in fig. 1, the space between the piston head 2 and the top of the cylinder body 1 is a cavity A, and the top of the side surface of the second cylindrical cavity 13 is provided with an air outlet 4, so that the interior of the piston 9 is communicated with the interior of the cylinder body 1;
the other end of the piston 9 extends out of the cylinder body 1 from the first cylindrical cavity 12, the bottom of the cylinder body 1 is coaxially connected with a shaft barrel 11, the shaft barrel 11 and the piston 9 are coaxially arranged, a shaft sleeve 8 is fixedly installed in the shaft barrel 11, at least one set of arranged ball holes 16 are formed in the inner surface of the shaft sleeve 8, the number of the ball holes 16 in each set is A, A is not less than 1, the ball holes 16 are arranged at intervals along the axis direction of the cylinder body 1, balls 6 are arranged in each ball hole 16, and the balls 6 extend into the shaft sleeve 8; the side face of the piston 9 is provided with limiting grooves 7 with the quantity and the positions corresponding to the ball holes 16, and each group of balls 6 are arranged in the limiting grooves 7.
When the piston 9 extends back and forth, the piston 9 is supported by the shaft sleeve 8, the balls 6 and the piston 9 are in point contact, and the balls can roll in the ball holes 16, so that the friction between the piston 9 and the balls is reduced, the piston can be used for a long time without abrasion, and when the piston 9 is subjected to circumferential deflection force, the balls are limited in the limiting grooves 7, so that the piston 9 is limited in the circumferential direction, and the piston 9 can only do reciprocating motion along the axis of the cylinder body 1;
as shown in fig. 1, the cylinder 1 in the first cylindrical cavity 12 is opened with an air suction port 5. When the air suction port 5 draws air outwards, it should be noted that the diameter of the opening 17 is larger than the diameter of the air outlet 4, so that the air inflow of the opening 17 is larger than the air flow rate of the air outlet 4, outside air enters from the piston 9, so that the pressure in the cavity A is larger than the pressures in the first cylindrical cavity 12 and the second cylindrical cavity 13, and at this time, the piston 9 moves downwards under the driving of the pressure in the cavity A;
the bottom of piston 9 is equipped with vacuum chuck 18, install the filter screen in the vacuum chuck 18, install on installation head 10 at the top of vacuum chuck 18, installation head 10 is hollow structure and threaded connection inside piston 9 bottom, reach the object of being grabbed (as arrow B indicates in fig. 2 and fig. 3) when vacuum chuck 18, along with being bled gradually in cylinder body 1, make vacuum chuck 18 form the negative pressure, absorb the object, at this moment vacuum chuck's bottom is sealed by the object, at this moment the gas in the cavity A is flowed into in gas outlet 4, is inhaled interface 5 and is inhaled away, make atmospheric pressure in the cavity A be less than outside atmospheric pressure, make piston 9 rise, thereby drive the object and rise.
Specifically, when the air suction device is used, due to the fact that the piston 9 and the shaft sleeve 8 are in clearance fit, when the air suction port 5 stops sucking air, air is continuously sucked into a gap between the piston 9 and the shaft sleeve 8 (it needs to be emphasized that the air suction amount of the air suction port 5 is far larger than the air suction amount of the gap), the object is lifted to a preset position, then the negative pressure device stops, outside air gradually enters the cylinder body from the gap, and when the difference of the internal pressure and the external pressure of the cylinder body reaches a certain value, the object automatically falls off. I.e., chamber a pressure is greater than chamber 13 pressure, the piston head is forced downward. The vacuum chuck sucks the conveyed object, closed air enters the vacuum cylinder, the vacuum degree vc of the inner cavity of the vacuum cylinder moves upwards with the piston head, the vacuum chuck and the conveyed object under the action of atmospheric pressure. The vacuum cylinder lifts upward 1/4 pi vacuum vc x dd. The vacuum pump stops sucking air, the piston head is in clearance fit with the shaft sleeve, the atmosphere flows into the inner cavity of the vacuum cylinder from the clearance, the pressure of the inner cavity of the vacuum cylinder is gradually close to the external atmospheric pressure, the piston head and the vacuum sucker are kept at high positions by being propped by the spring, the conveyed object falls off, and a cycle period is completed.
Wherein, the top of the cylinder body 1 is provided with a sealing end cover 3.
As shown in fig. 1, a flange 15 is arranged on the inner wall of the cylinder body 1 between the shaft cylinder 11 and the first cylindrical cavity 12, a spring 14 is arranged in the first cylindrical cavity 12 and the second cylindrical cavity 13, the spring 14 is sleeved on the piston 9, two ends of the spring 14 are respectively contacted with the flange 15 and the piston head 2, the arranged spring 14 can ensure the stable motion of the piston 9, and meanwhile, external air can be added to enter the cylinder body from a gap between the piston 9 and the shaft sleeve 8.
Wherein, interference fit and glue are fixed between the shaft sleeve 8 and the shaft barrel 11.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A fixed-axis linear running vacuum cylinder comprises a cylinder body (1), wherein a second cylindrical cavity (13) is arranged in the cylinder body (1), a first cylindrical cavity (12) is arranged at the bottom of the second cylindrical cavity (13), the first cylindrical cavity (12) and the second cylindrical cavity (13) are arranged in a stepped manner, a piston (9) is coaxially arranged in the cylinder body (1), a piston head (2) is installed at the top of the piston (9), and the piston head (2) moves up and down along the second cylindrical cavity (13), and the fixed-axis linear running vacuum cylinder is characterized in that the piston (9) is of a hollow structure with upper and lower ends mutually communicated, an opening (17) communicated with the piston (9) is formed in the top of the piston head (2), an air outlet (4) is formed in the top of the side surface of the second cylindrical cavity (13), and the interior of the piston (9) is communicated with the interior of the cylinder body (1);
the other end of the piston (9) extends out of the cylinder body (1) from the first cylindrical cavity (12), the bottom of the cylinder body (1) is coaxially connected with a shaft cylinder (11), the shaft cylinder (11) and the piston (9) are coaxially arranged, a shaft sleeve (8) is fixedly arranged in the shaft cylinder (11), at least one set of arranged ball holes (16) are formed in the inner surface of the shaft sleeve (8), the number of each set of ball holes (16) is A, A is larger than or equal to 1, the ball holes (16) are arranged at intervals along the axis direction of the cylinder body (1), balls (6) are arranged in each ball hole (16), and the balls (6) extend into the shaft sleeve (8);
limiting grooves (7) which are arranged in quantity and position and correspond to the ball holes (16) are formed in the side face of the piston (9), and each group of balls (6) are arranged in the limiting grooves (7); an air suction interface (5) is arranged on the cylinder body (1) at the first cylindrical cavity (12);
the top of the cylinder body (1) is provided with a sealing end cover (3), the top of the piston (9) is inserted into the piston head (2) and is in threaded connection with the piston head (2), the inner wall of the cylinder body (1) between the shaft cylinder (11) and the first cylindrical cavity (12) is provided with a flange (15), a spring (14) is arranged in the first cylindrical cavity (12) and the second cylindrical cavity (13), the spring (14) is sleeved on the piston (9), and two ends of the spring (14) are respectively contacted with the flange (15) and the piston head (2); the air suction interface (5) is internally connected with a negative pressure device through a pipeline; the bottom of piston (9) is equipped with vacuum chuck (18), and install on installation head (10) the top of vacuum chuck (18), and installation head (10) are hollow structure and threaded connection inside piston (9) bottom, install the filter screen in vacuum chuck (18).
2. A fixed axis straight travel vacuum cylinder as defined in claim 1, wherein: the shaft sleeve (8) and the shaft cylinder (11) are fixed by interference fit and glue.
3. A fixed axis straight travel vacuum cylinder as defined in claim 1, wherein: the diameter of the opening (17) is larger than that of the air outlet (4), so that the air inflow of the opening (17) is larger than the air flow of the air outlet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210437294.9A CN114607674A (en) | 2022-04-19 | 2022-04-19 | Fixed-axis linear traveling vacuum cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210437294.9A CN114607674A (en) | 2022-04-19 | 2022-04-19 | Fixed-axis linear traveling vacuum cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114607674A true CN114607674A (en) | 2022-06-10 |
Family
ID=81867964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210437294.9A Pending CN114607674A (en) | 2022-04-19 | 2022-04-19 | Fixed-axis linear traveling vacuum cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114607674A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115924533A (en) * | 2023-02-21 | 2023-04-07 | 天津金海通半导体设备股份有限公司 | Air supply telescopic and pickup device |
-
2022
- 2022-04-19 CN CN202210437294.9A patent/CN114607674A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115924533A (en) * | 2023-02-21 | 2023-04-07 | 天津金海通半导体设备股份有限公司 | Air supply telescopic and pickup device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114607674A (en) | Fixed-axis linear traveling vacuum cylinder | |
| CN110039566A (en) | A kind of chip sorting equipment of the high reliablity with dedusting function | |
| CN217129981U (en) | Fixed-axis linear traveling vacuum cylinder | |
| CN108716288B (en) | Building outer wall belt cleaning device | |
| CN202165260U (en) | Hydraulic pump | |
| CN109488552B (en) | High-reliability manual hydraulic pump | |
| CN205047380U (en) | Booster pump | |
| CN201747558U (en) | Unloading device of compressor | |
| CN2834561Y (en) | Air suction and exhaust device for milk-pump | |
| CN203939652U (en) | A kind of oil-gas recovery vacuum pump | |
| CN113719628A (en) | Air pressure sealing structure used in sealing valve and sealing method thereof | |
| CN215213949U (en) | Oil suction cover assembly of horizontal rotor compressor | |
| CN215213843U (en) | Air inlet piston assembly for piston type air compressor | |
| CN113042325B (en) | Vacuum dispensing integrated device | |
| CN201027604Y (en) | Printing ink pump | |
| CN2908850Y (en) | Drive device of energy-saving oil-less compressor | |
| CN221061346U (en) | Hand-pulling type negative pressure suction nose and sputum aspirator | |
| CN220134163U (en) | Forced mechanical valve type air-proof pump with bridge crossing strengthening function | |
| CN212774669U (en) | Air-water dual-purpose pump | |
| CN209622087U (en) | A kind of follow-on high leakproofness pneumatic conveying dome valve | |
| CN219560728U (en) | CNC precision machining is with hydro-cylinder dust blowing device | |
| CN213976064U (en) | Suction nozzle structure with floating suction head | |
| CN220113149U (en) | Cylinder output end connecting piece | |
| CN209115055U (en) | A kind of preventing sucker rod abrading block | |
| CN220151527U (en) | Valve seat |
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 |