CN110538978A - Centrifugal main machine for centrifugal pipe casting machine - Google Patents

Centrifugal main machine for centrifugal pipe casting machine Download PDF

Info

Publication number
CN110538978A
CN110538978A CN201910807416.7A CN201910807416A CN110538978A CN 110538978 A CN110538978 A CN 110538978A CN 201910807416 A CN201910807416 A CN 201910807416A CN 110538978 A CN110538978 A CN 110538978A
Authority
CN
China
Prior art keywords
hook
riding wheel
spring
centrifugal
pipe
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
Application number
CN201910807416.7A
Other languages
Chinese (zh)
Inventor
吴灵
徐砚琛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Shenao Machinery Engineering Co Ltd
Original Assignee
Zhejiang Shenao Machinery Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Shenao Machinery Engineering Co Ltd filed Critical Zhejiang Shenao Machinery Engineering Co Ltd
Priority to CN201910807416.7A priority Critical patent/CN110538978A/en
Publication of CN110538978A publication Critical patent/CN110538978A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00Centrifugal casting; Casting by using centrifugal force
    • B22D13/02Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00Centrifugal casting; Casting by using centrifugal force
    • B22D13/10Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

The invention relates to a centrifugal main machine for a centrifugal pipe casting machine, and belongs to the field of mechanical equipment. The invention comprises a host base, which is characterized in that: the pipe die rotation limiting device comprises a main machine base, a pipe die and a pipe die, and is characterized by further comprising a riding wheel device which plays a supporting role for the pipe die and drives the pipe die to rotate, and a blocking wheel device which is used for limiting the pipe die to move along the axis of the pipe die in the rotation process, wherein the riding wheel device and the blocking wheel device are both installed on the main machine base, and the riding wheel device is matched with the blocking wheel device.

Description

Centrifugal main machine for centrifugal pipe casting machine
Technical Field
The invention relates to a centrifugal main machine for a centrifugal pipe casting machine, and belongs to the field of mechanical equipment.
Background
The ductile iron pipe is widely applied to underground water pipes, a centrifugal host is used for driving a pipe die to rotate for centrifugal pouring in production, centrifugal hosts of different models are required to be adopted according to different pipe diameters of pipe fittings, a hot die centrifuge is generally adopted for processing the pipe fittings when the pipe diameters of the pipe fittings are larger than 1200mm, most of riding wheel bases of the existing centrifugal hosts are independently arranged, each riding wheel base is provided with a riding wheel body, the position of each riding wheel base needs to be readjusted after the pipe die is replaced, the axis of the pipe die after the pipe die is replaced can coincide with the axis of the original pipe die, the adjustment process is relatively troublesome, and the quality of the pipe fittings can be influenced if errors are large.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a centrifugal main machine for a centrifugal pipe casting machine with a reasonable structural design.
The technical scheme adopted by the invention for solving the problems is as follows: this a centrifugal host computer for centrifugal pipe casting machine, including the host computer base, its structural feature lies in: the pipe die rotation limiting device comprises a main machine base, a pipe die and a pipe die, and is characterized by further comprising a riding wheel device which plays a supporting role for the pipe die and drives the pipe die to rotate, and a blocking wheel device which is used for limiting the pipe die to move along the axis of the pipe die in the rotation process, wherein the riding wheel device and the blocking wheel device are both installed on the main machine base, and the riding wheel device is matched with the blocking wheel device.
Further, the riding wheel device comprises a riding wheel base and a riding wheel body, wherein the riding wheel base is installed on the host machine base, and the riding wheel body is installed on the riding wheel base.
Further, the riding wheel base is of an integrated structure.
Further, the riding wheel body is in contact with the outer wall of the pipe die.
Further, the riding wheel device comprises a riding wheel driving motor, and the riding wheel driving motor is connected with the riding wheel body.
Furthermore, the catch wheel device comprises a catch wheel base and a catch wheel body, the catch wheel base is installed on the host base, and the catch wheel body is installed on the catch wheel base.
Further, a pipe die limiting groove is installed at the socket end of the pipe die, and the catch wheel body is located in the pipe die limiting groove.
Furthermore, a core pressing hook used for compressing the sand core is installed at the female end of the pipe die and comprises a hook seat, a hook body, a resetting mechanism and a fixed pin shaft, the hook seat is installed at the female end of the pipe die, the hook body is installed on the hook seat through the fixed pin shaft, one end of the resetting mechanism is rotatably connected with the hook body, and the other end of the resetting mechanism is rotatably connected with the hook seat.
Further, the centrifugal main machine further comprises a lubricating device.
Furthermore, the reset mechanism comprises a spring outer sleeve, a spring inner sleeve and a reset spring, the spring outer sleeve and the spring outer sleeve are rotatably connected with the hook body, the spring inner sleeve is rotatably connected with the hook seat, the reset spring is sleeved on the spring inner sleeve, and the spring outer sleeve is sleeved on the reset spring; one end of the reset spring is abutted against the outer spring sleeve, and the other end of the reset spring is abutted against the inner spring sleeve.
Furthermore, the reset mechanism further comprises an outer sleeve pin shaft and an inner sleeve pin shaft, the outer spring sleeve is installed on the hook body through the outer sleeve pin shaft, and the inner spring sleeve is installed on the hook seat through the inner sleeve pin shaft.
Further, the hook body comprises a hook body head, a hook body seat and a hook body rod, wherein the hook body head and the hook body seat are respectively fixed at two ends of the hook body rod; the hook body rod is arranged on the hook seat through a fixed pin shaft; one end of the reset mechanism is rotationally connected with the hook body seat; the hook body head is arranged in a circular arc structure; the two sides of the hook body are symmetrically arranged.
Compared with the prior art, the invention has the following advantages: this centrifugal host computer uses when being applicable to the pipe fitting that adopts hot mould method processing pipe diameter to be more than 1200mm, left side in this centrifugal host computer, two riding wheel base formula shaping structures as an organic whole on the right side, confirm a left side in advance according to the size of pipe diameter, distance between two riding wheel bases on the right side, can be with corresponding riding wheel pedestal mounting on the host computer base when needing to change the pipe die can, do not need to change the pipe die at every turn before the adjustment left side, distance between two riding wheel bases on the right side, when driving the pipe die through the riding wheel body and rotating, keep off the wheel body and inlay the pipe die spacing groove, in order to prevent the pipe die at the rotation in-process, the pipe die removes along its axis direction, reduce the error, guarantee the pipe fitting quality, the input of human cost has been reduced simultaneously, and work.
In addition, the female end of the pipe die is installed on the hook seat of the core pressing hook, the sand core is placed at the female end of the pipe die, after molten iron is poured into the socket end of the pipe die, the weight of the hook seat is larger than that of the hook body head, the hook body rod rotates at a high speed through the pipe die, the hook body head and the sand core are enabled to be in contact through a core pressing plate under the action of centrifugal force, the hook body head presses the sand core more tightly when the rotating speed of the pipe die is faster, and the hook body head with the arc arrangement is convenient to place the sand core at the female end of the pipe die.
Drawings
Fig. 1 is a schematic front view of a centrifugal main unit according to an embodiment of the present invention.
Fig. 2 is a left side view structural schematic diagram of the centrifugal main machine according to the embodiment of the present invention.
Fig. 3 is a schematic top view of the centrifugal main machine according to the embodiment of the present invention.
Fig. 4 is a schematic view of the sectional structure III-III in fig. 3.
Fig. 5 is a schematic front view of a press core hook according to an embodiment of the present invention.
Fig. 6 is a schematic view of the sectional structure II-II in fig. 5.
Description of reference numerals: a main machine base E1, a riding wheel device E2, a catch wheel device E3, a lubricating device E4,
A riding wheel base E21, a riding wheel body E22, a riding wheel driving motor E23,
A catch wheel base E31, a catch wheel body E32, a pipe die limiting groove E33,
A core pressing hook D,
A hook seat D1, a hook body D2, a reset mechanism D3, a fixed pin shaft D4,
A hook head D21, a hook seat D22, a hook rod D23,
The spring comprises a spring outer sleeve D31, a spring inner sleeve D32, a return spring D33, an outer sleeve pin shaft D34 and an inner sleeve pin shaft D35.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 1 to 6, it should be understood that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the function and the achievable purpose of the present invention. In the present specification, the terms "upper", "lower", "left", "right", "middle" and "one" are used for clarity of description, and are not used to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
The centrifugal main machine for the centrifugal pipe casting machine in the embodiment comprises a main machine base E1, a lubricating device E4, a riding wheel device E2 which has a supporting effect on a pipe die and drives the pipe die to rotate, and a wheel blocking device E3 which is used for limiting the pipe die to move along the axis of the pipe die in the rotating process, wherein the riding wheel device E2 and the wheel blocking device E3 are both installed on the main machine base E1, and the riding wheel device E2 is matched with the wheel blocking device E3.
The riding wheel device E2 in the embodiment comprises a riding wheel base E21, a riding wheel body E22 and a riding wheel driving motor E23, wherein the riding wheel base E21 is installed on a main machine base E1, a riding wheel body E22 is installed on a riding wheel base E21, the riding wheel driving motor E23 is connected with a riding wheel body E22, and the riding wheel body E22 is in contact with the outer wall of a pipe die; the riding wheel base E21 is of a one-piece structure.
The catch wheel device E3 in the embodiment comprises a catch wheel base E31 and a catch wheel body E32, wherein the catch wheel base E31 is installed on a main machine base E1, a catch wheel body E32 is installed on a catch wheel base E31, a pipe die limiting groove E33 is installed at the socket end of a pipe die, and the catch wheel body E32 is located in the pipe die limiting groove E33.
This centrifugal host computer uses when being applicable to the pipe fitting that adopts hot mould method processing pipe diameter to be more than 1200mm, left and right two riding wheel base E21 formula shaping structure as an organic whole in this centrifugal host computer, confirm in advance according to the size of pipe diameter that the distance between left and right two riding wheel base E21, can install corresponding riding wheel base E21 on host computer base E1 when needing to change the pipe die can, do not need to change the pipe die at every turn before the adjustment left, the distance between two riding wheel base E21 on the right side, when driving the pipe die through riding wheel body E22 and rotating, keep off wheel body E32 and inlay pipe die spacing groove E33, in order to prevent the pipe die at the rotation in-process, the pipe die removes along its axis direction, reduce the error, guarantee the pipe fitting quality, the input of human cost has been reduced simultaneously, and work efficiency is improved.
The female end of the pipe die in this embodiment is installed and is used for pressing the pressure core hook D that the psammitolite compressed tightly, and pressure core hook D includes hook seat D1, coupler body D2, canceling release mechanical system D3 and fixed pin D4, and the female end at the pipe die is installed to hook seat D1, and coupler body D2 installs on hook seat D1 through fixed pin D4, and canceling release mechanical system D3's one end is rotated with coupler body D2 and is connected, and canceling release mechanical system D3's the other end is rotated with hook seat D1 and is connected.
The reset mechanism D3 in this embodiment includes a spring outer sleeve D31, a spring inner sleeve D32, a reset spring D33, an outer sleeve pin D34 and an inner sleeve pin D35, the spring outer sleeve D31 is rotatably connected with the hook body D2, the spring outer sleeve D31 is mounted on the hook body D2 through an outer sleeve pin D34 in normal cases, the spring inner sleeve D32 is rotatably connected with the hook base D1, in normal cases, the spring inner sleeve D32 is mounted on the hook base D1 through an inner sleeve pin D35, the reset spring D33 is sleeved on the spring inner sleeve D32, and the spring outer sleeve D31 is sleeved on the reset spring D33; one end of the return spring D33 is abutted against the spring outer sleeve D31, and the other end of the return spring D33 is abutted against the spring inner sleeve D32.
The hook body D2 in the embodiment comprises a hook body head D21, a hook body seat D22 and a hook body rod D23, wherein the hook body head D21 and the hook body seat D22 are respectively fixed at two ends of the hook body rod D23; the hook body rod D23 is installed on the hook seat D1 through a fixed pin shaft D4; one end of the reset mechanism D3 is rotationally connected with the hook body seat D22; the hook head D21 is arranged in a circular arc structure; the hook body D2 is symmetrically arranged on two sides.
This pressure core hook D is to install the female end at the pipe die with hook seat D1, place the psammitolite at the female end of pipe die, pour the back to the socket end pouring molten iron of pipe die, because the weight in hook body seat D22 is greater than the weight of hook body head D21, high-speed rotation through the pipe die, make hook body pole D23 rotate along fixed pin axle D4, make hook body head D21 and psammitolite pass through the contact of pressure core plate under the effect of centrifugal force, hook body head D21 is tighter with the psammitolite pressure when pipe die pivoted speed is faster, hook body head D21 that is the circular arc setting conveniently places the psammitolite at the female end of pipe die.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A centrifugal master for a centrifugal pipe-casting machine, comprising a master base (E1), characterized in that: still include to play supporting role to the pipe mould and drive pipe mould pivoted riding wheel device (E2) to and be used for restricting pipe mould and keep off wheel device (E3) along pipe mould axis removal in the rotation process, riding wheel device (E2) and fender wheel device (E3) are all installed on host computer base (E1), riding wheel device (E2) and fender wheel device (E3) cooperation.
2. The centrifuge mainframe for a centrifugal tube-casting machine of claim 1, wherein: the riding wheel device (E2) comprises a riding wheel base (E21) and a riding wheel body (E22), wherein the riding wheel base (E21) is installed on a main machine base (E1), and the riding wheel body (E22) is installed on a riding wheel base (E21); and/or; the riding wheel base (E21) is of an integrated structure.
3. The centrifugal master for a centrifugal pipe caster of claim 2, wherein: the riding wheel body (E22) is in contact with the outer wall of the pipe die.
4. The centrifugal master for a centrifugal pipe caster of claim 2, wherein: the riding wheel device (E2) comprises a riding wheel driving motor (E23), and the riding wheel driving motor (E23) is connected with the riding wheel body (E22).
5. The centrifuge mainframe for a centrifugal tube-casting machine of claim 1, wherein: catch wheel device (E3) includes catch wheel base (E31) and catch wheel body (E32), catch wheel base (E31) are installed on host computer base (E1), catch wheel body (E32) are installed on catch wheel base (E31).
6. The centrifuge mainframe for a centrifugal tube-casting machine of claim 5, wherein: a pipe die limiting groove (E33) is installed at the socket end of the pipe die, and the catch wheel body (E32) is located in the pipe die limiting groove (E33).
7. The centrifuge mainframe for a centrifugal tube-casting machine of claim 1, wherein: the female end of pipe die installs pressure core hook (D) that is used for compressing tightly the psammitolite, pressure core hook (D) is including hook seat (D1), coupler body (D2), canceling release mechanical system (D3) and fixed pin axle (D4), the female end at the pipe die is installed in hook seat (D1), the coupler body (D2) is installed on hook seat (D1) through fixed pin axle (D4), the one end and the coupler body (D2) of canceling release mechanical system (D3) rotate to be connected, the other end and the hook seat (D1) of canceling release mechanical system (D3) rotate to be connected.
8. The centrifuge mainframe for a centrifugal tube-casting machine of claim 7, wherein: the reset mechanism (D3) comprises a spring outer sleeve (D31), a spring inner sleeve (D32) and a reset spring (D33), the spring outer sleeve (D31) and the spring outer sleeve (D31) are rotatably connected with a hook body (D2), the spring inner sleeve (D32) is rotatably connected with a hook seat (D1), the reset spring (D33) is sleeved on the spring inner sleeve (D32), and the spring outer sleeve (D31) is sleeved on the reset spring (D33); one end of the return spring (D33) is abutted with the outer spring sleeve (D31), and the other end of the return spring (D33) is abutted with the inner spring sleeve (D32).
9. The centrifuge mainframe for a centrifugal tube-casting machine of claim 7, wherein: the resetting mechanism (D3) further comprises an outer sleeve pin shaft (D34) and an inner sleeve pin shaft (D35), the spring outer sleeve (D31) is installed on the hook body (D2) through the outer sleeve pin shaft (D34), and the spring inner sleeve (D32) is installed on the hook seat (D1) through the inner sleeve pin shaft (D35).
10. The centrifuge mainframe for a centrifugal tube-casting machine of claim 7, wherein: the hook body (D2) comprises a hook body head (D21), a hook body seat (D22) and a hook body rod (D23), wherein the hook body head (D21) and the hook body seat (D22) are respectively fixed at two ends of the hook body rod (D23); the hook body rod (D23) is installed on the hook seat (D1) through a fixed pin shaft (D4); one end of the reset mechanism (D3) is rotationally connected with the hook body seat (D22); the hook body head (D21) is arranged in a circular arc structure; the two sides of the hook body (D2) are symmetrically arranged.
CN201910807416.7A 2019-08-29 2019-08-29 Centrifugal main machine for centrifugal pipe casting machine Pending CN110538978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910807416.7A CN110538978A (en) 2019-08-29 2019-08-29 Centrifugal main machine for centrifugal pipe casting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910807416.7A CN110538978A (en) 2019-08-29 2019-08-29 Centrifugal main machine for centrifugal pipe casting machine

Publications (1)

Publication Number Publication Date
CN110538978A true CN110538978A (en) 2019-12-06

Family

ID=68710897

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910807416.7A Pending CN110538978A (en) 2019-08-29 2019-08-29 Centrifugal main machine for centrifugal pipe casting machine

Country Status (1)

Country Link
CN (1) CN110538978A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115846610A (en) * 2023-01-04 2023-03-28 杭州富生电器有限公司 Full-automatic six-station rotor core centrifugal casting production line

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006773A (en) * 1975-06-18 1977-02-08 Pont-A-Mousson S.A. Centrifugally casting machine having an axial support device
CN2325136Y (en) * 1998-05-26 1999-06-23 李洪霞 Equipment for assembling and disassembling sand core for centrifugical casting pipe
CN2329465Y (en) * 1998-03-28 1999-07-21 新兴铸管(集团)有限责任公司 Large-sized spheroidal graphite centrifugal cast tube machine
CN200954536Y (en) * 2006-09-11 2007-10-03 天水华荣铸造机械有限公司 Large centrifugal pipe-casting machine
CN206536000U (en) * 2017-03-10 2017-10-03 新兴铸管股份有限公司 A kind of cast tube pipe die catch wheel device
CN207668460U (en) * 2017-12-22 2018-07-31 嘉善超盛五金材料有限公司 A kind of centrifuge
CN211331244U (en) * 2019-08-29 2020-08-25 浙江深澳机械工程有限公司 Centrifugal main machine for centrifugal pipe casting machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006773A (en) * 1975-06-18 1977-02-08 Pont-A-Mousson S.A. Centrifugally casting machine having an axial support device
CN2329465Y (en) * 1998-03-28 1999-07-21 新兴铸管(集团)有限责任公司 Large-sized spheroidal graphite centrifugal cast tube machine
CN2325136Y (en) * 1998-05-26 1999-06-23 李洪霞 Equipment for assembling and disassembling sand core for centrifugical casting pipe
CN200954536Y (en) * 2006-09-11 2007-10-03 天水华荣铸造机械有限公司 Large centrifugal pipe-casting machine
CN206536000U (en) * 2017-03-10 2017-10-03 新兴铸管股份有限公司 A kind of cast tube pipe die catch wheel device
CN207668460U (en) * 2017-12-22 2018-07-31 嘉善超盛五金材料有限公司 A kind of centrifuge
CN211331244U (en) * 2019-08-29 2020-08-25 浙江深澳机械工程有限公司 Centrifugal main machine for centrifugal pipe casting machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
第一机械工业部天津设计院等: "焊接设备选用手册", 30 April 1974, 机械工业出版社, pages: 206 - 207 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115846610A (en) * 2023-01-04 2023-03-28 杭州富生电器有限公司 Full-automatic six-station rotor core centrifugal casting production line

Similar Documents

Publication Publication Date Title
WO2022252293A1 (en) Gear-machining surface grinding device
CN211331244U (en) Centrifugal main machine for centrifugal pipe casting machine
CN110538978A (en) Centrifugal main machine for centrifugal pipe casting machine
CN105328923A (en) Vertical bead filler-bead ring fitting compaction device
CN110732920B (en) Centrifugal grinding device for inner hole of casting part
CN205291644U (en) Vertical triangle is glued, steel wire winding laminating compaction device
CN206392362U (en) Workpiece spin coating device
CN211249161U (en) Auxiliary device for bearing production and processing
CN209426050U (en) A kind of rotating device of injection mold maintenance
CN211135457U (en) Core pressing hook for centrifugal pipe casting machine
CN217617228U (en) Pipe bending machine
CN102837730A (en) Auto steering gear casing structure
CN201437135U (en) Rotating arm device for dual-head pipe bender
CN203124499U (en) Tumbler type tube bending machine
CN206736082U (en) A kind of chuck portion for quartz pushrod post forming machine fills
CN210849166U (en) Vertical milling machine for metal castings
CN208450602U (en) Helical gear die structure for powder metallurgy forming press
CN206500822U (en) A kind of pressing device
CN102205364B (en) Pipe bender and avoidance type connected main clamp mechanism for same
CN220806726U (en) Foundry goods grinding device
CN214025222U (en) Fixing clamp for polishing clutch disc
CN204324490U (en) Axial restraint frame height adjustable coiled material folding and unfolding rotary head
CN211539453U (en) Pouring cup for casting
CN218799586U (en) Cutting positioning tool
CN109129182B (en) A kind of automobile brake disc processing positioning tool

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