CN115334766A - Probe control method and device - Google Patents

Probe control method and device Download PDF

Info

Publication number
CN115334766A
CN115334766A CN202211015924.XA CN202211015924A CN115334766A CN 115334766 A CN115334766 A CN 115334766A CN 202211015924 A CN202211015924 A CN 202211015924A CN 115334766 A CN115334766 A CN 115334766A
Authority
CN
China
Prior art keywords
probe
driving motor
feedback current
product
preset
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
CN202211015924.XA
Other languages
Chinese (zh)
Inventor
陆昱成
陈则立
朱正西
张启胜
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.)
Suzhou Keyun Laser Technology Co Ltd
Original Assignee
Suzhou Keyun Laser Technology 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 Suzhou Keyun Laser Technology Co Ltd filed Critical Suzhou Keyun Laser Technology Co Ltd
Priority to CN202211015924.XA priority Critical patent/CN115334766A/en
Publication of CN115334766A publication Critical patent/CN115334766A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/225—Correcting or repairing of printed circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)

Abstract

The application discloses a probe control method and a probe control device, wherein the probe control method comprises the following steps: judging whether the probe reaches a preset position, if so, starting to monitor the feedback current of a driving motor, and controlling the driving motor to drive the probe to move; and judging whether the feedback current of the driving motor reaches a preset feedback current, if so, controlling the driving motor to stop running, and enabling the probe to reach the surface of the product to be processed. The application provides a probe control method and a probe control device, which monitor the pressure and the position of a probe by monitoring the feedback current of a driving motor, and avoid the damage to a product caused by the fact that the probe has a large pricking mark on the surface of the product to be processed.

Description

Probe control method and device
Technical Field
The application relates to the technical field of printed circuit board testing, in particular to a probe control method and a probe control device.
Background
Printed circuit boards and the like are susceptible to defects, and inspection and repair are required for this purpose. When the probe is detected and repaired, the driving motor is required to drive the probe to move to the surface of the printed circuit board, so that the probe can be conveniently sprayed with conductive fluid and the like for repairing. In order to prevent the probe from generating a large pricking mark on the printed circuit board, which causes the condition that the quality of the printed circuit board is damaged after detection and repair, the probe needs to be controlled, particularly the pressure and the position of the probe are controlled.
In a traditional probe pressure and position control method, a pressure sensor is mainly used for detecting a pressure signal fed back by a probe to achieve the control purpose. Since the contact pressure between the probe and the printed circuit board is small, the conventional pressure sensor has high accuracy, and is difficult to accurately measure the pressure and position, so that the accurate pressure and position control is difficult to perform, and the pricking mark of the probe on the printed circuit board is large.
The problem also occurs in the scenes of repair of other products and the like.
Therefore, how to improve the control accuracy of the probe pressure and position becomes a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The application provides a probe control method and a probe control device, which can improve the control precision of the pressure and the position of a probe.
In order to solve one or more of the above technical problems, the present application adopts the following technical solutions:
the application provides a probe control method, which comprises the following steps:
judging whether the probe reaches a preset position, if so, starting to monitor the feedback current of a driving motor, and controlling the driving motor to drive the probe to move;
and judging whether the feedback current of the driving motor reaches a preset feedback current, if so, controlling the driving motor to stop running, and enabling the probe to reach the surface of the product to be processed.
Further, before the probe reaches a preset position, the current position of the probe is determined by using a pulse signal output by a grating ruler and the initial position of the probe, and whether the probe reaches the preset position is judged according to the current position.
Further, the driving motor is controlled to drive the probe to move at a first speed until the probe reaches the preset position; when the probe reaches the preset position, controlling the driving motor to drive the probe to move at a second speed until the current feedback current of the driving motor reaches the preset feedback current; the first speed is higher than the second speed.
Further, the distance between the initial position of the probe and the surface of the product is a first distance, the distance between the initial position of the probe and the preset position of the probe is a second distance, and the second distance is 50% -75% of the first distance. Preferably, the second distance is 60% of the first distance.
Further, the preset feedback current reaches the surface of the product corresponding to the probe and keeps a preset curvature on the surface of the product.
Further, after the current feedback current from the driving motor reaches the preset feedback current preset time, the driving motor is started to drive the probe to leave the surface of the product, and the preset time is 40-60ms. Preferably, the preset time is 50ms.
Further, when the product to be processed is a defective product to be repaired, the method further includes:
and when judging that the current feedback current of the driving motor reaches a preset feedback current, controlling the probe to spray conductive fluid on the defective product for repair. The conductive fluid comprises silver paste or copper paste and the like.
Further, the driving motor includes at least one of a voice coil motor, a servo motor, or a stepping motor.
Corresponding to the probe control method, the application also provides a probe control device, which comprises:
the controller is used for monitoring the current feedback current of the driving motor and stopping the driving motor when judging that the current feedback current of the driving motor reaches the preset feedback current;
the driving motor is used for driving the probe to move under the control of the controller, and the preset feedback current corresponds to the probe and reaches the surface of a product to be processed;
the grating ruler is used for outputting pulse signals and feeding back the pulse signals to the controller, the controller controls the emission of the pulses, and the probe can be controlled to accurately move to a preset position by emitting a certain number of pulses.
According to the specific embodiments provided herein, the present application discloses the following technical effects:
the embodiment of the application monitors the pressure and the position of the probe by monitoring the feedback current of the driving motor, stops the operation of the driving motor when judging that the current feedback current of the driving motor reaches the preset feedback current, and can accurately control the probe to move to the surface of a product to be processed by setting the preset feedback current in the driving motor due to the fact that the preset feedback current is associated with the position and the pressure of the probe, and the probe is in contact with the surface of the product to be processed and keeps a certain pressure, so that the probe can repair the product to be processed by spraying a conductive fluid and the like.
Furthermore, the movement process of the probe is divided into two stages in the embodiment of the application, the first stage is to control the driving motor to drive the probe to move from the initial position to the preset position at a first speed, and the second stage is to control the driving motor to drive the probe to move from the preset position at a second speed until the current feedback current of the driving motor reaches the preset feedback current, namely the probe moves to the surface of the product to be processed, wherein the second speed is smaller than the first speed. The first stage adopts faster moving speed can guarantee a higher work efficiency, and the second stage reduces the moving speed of probe, has avoided being difficult to carry out the control of accurate probe pressure and position to further avoid the probe to prick the trace on waiting to handle the product and slightly big and treat the damage of handling the product.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a probe control method according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a probe control device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely below, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.
The movement of the probe requires position monitoring in order to know in time whether the probe has reached the surface of the product. If the position is monitored by pressure, the pressure is generated when the product surface is reached, and hysteresis is provided. It is therefore a problem that needs to be solved at present how to accurately detect the arrival of the probe at the surface of the product at once.
Current probes are moved by a drive motor, such as a voice coil motor. The spring deformation of the driving motor corresponds to the feedback current of the driving motor, and the spring deformation of the driving motor corresponds to the moving distance of the probe, namely, the feedback current of the driving motor is related to the moving distance of the probe. Therefore, the present application creatively proposes that a preset feedback current when the probe reaches the surface of the product can be obtained in advance, and then in the probe control process, whether the probe moves to the surface of the product is judged by using whether the feedback current of the driving motor reaches the preset feedback current. Based on the accuracy and timeliness of current monitoring, whether the probe moves to the surface of the product can be accurately and timely judged.
In summary, the method comprises the steps as shown in fig. 1:
s1: judging whether the probe reaches a preset position, if so, starting to monitor the feedback current of a driving motor, and controlling the driving motor to drive the probe to move;
s2: and judging whether the feedback current of the driving motor reaches a preset feedback current, if so, controlling the driving motor to stop running, and enabling the probe to reach the surface of the product to be processed.
Example 1
The monitoring of the current needs a higher frequency to collect and judge, and the probe needs a certain time to move from the original initial position (the probe needs to be located at a certain position when not used, in the probe control device, the general initial position corresponds to a fixed position) to the surface of the product, so the whole process relies on the monitoring of the current to waste resources, for this reason, the application further creatively selects a point between the initial position of the probe and the surface of the product as the preset position, the position monitoring is carried out between the initial position and the preset position through the grating ruler, and the more accurate current monitoring is selected between the preset position and the surface of the product.
Before the probe reaches a preset position, firstly, determining the current position of the probe by using a pulse signal output by a grating ruler and the initial position of the probe. During specific implementation, the distance from the probe to the preset position is converted into specific pulse number, and as one pulse corresponds to a certain distance, the probe is controlled to move through the certain number of pulses until the probe reaches the preset position. In the embodiment of the application, the upper computer controls the emission of the pulse, and the probe can be controlled to accurately move to the preset position by emitting a certain number of pulses.
The feedback current corresponds to the spring deformation of the driving motor, and in order to obtain the feedback current of the driving motor when the corresponding probe reaches the surface of the product, the preset feedback current needs to be determined through testing in advance. The current of the drive motor varies linearly with the movement of the probe when the probe is not in contact with the surface of the product. And controlling the probe to move to the surface of the product from the initial position according to the initial current value set by the driving motor, recording the feedback current magnitude when the probe is in contact with the surface of the product, and acquiring a prick mark image. When the probe is in contact with the surface of a product, because the probe has a certain force in motion, a pricking mark corresponding to the force is left on the surface of the product, and the required force is judged according to different pricking mark images so as to further determine the required feedback current. And a preset feedback current value can be obtained through the mapping relation between the feedback current and the downward moving distance of the probe and the comparison of the pricking mark images.
Furthermore, the probe needs to maintain a preset curvature on the surface of the product so that the probe can spray a conductive fluid on the defective product for repair. During specific implementation, repeated experiments can be carried out for multiple times aiming at each sampling point of the same product, then the feedback current value obtained by the repeated experiments is used as an average value, the average value is used as a preset feedback current of the product in the actual measurement process, and the preset feedback current reaches the surface of the product and keeps a preset curvature on the surface of the product corresponding to the probe.
When the current feedback current of the driving motor reaches the preset feedback current, the controller controls the driving motor to stop moving, so that the probe is guaranteed to stop timely after contacting the surface of the product, the product is repaired by spraying conductive fluid on the probe, and the large pricking mark generated on the product by the probe is further avoided.
In a specific implementation mode, the driving motor descends at a designated speed, and in the descending process of the driving motor, the controller starts a data acquisition function for the driving motor, and acquires and records the driving motor position of the driving motor in the descending process and the current feedback current value corresponding to each driving motor position according to a set sampling frequency. The lowering speed of the driving motor is determined by the resolution and sampling frequency of the driving motor. The controller collects current data according to the set sampling frequency, so that the controller can determine whether the current feedback current data reaches the preset feedback current or not according to the collected current data. When the feedback current reaches the preset feedback current, the controller controls the driving motor to stop, namely, the probe does not continuously descend.
In summary, the method comprises the steps as shown in fig. 1:
s0: determining the current position of the probe by using a pulse signal output by a grating ruler and the initial position of the probe, and judging whether the probe reaches the preset position according to the current position;
s1: judging whether the probe reaches a preset position, if so, starting to monitor the feedback current of a driving motor, and controlling the driving motor to drive the probe to move;
s2: and judging whether the feedback current of the driving motor reaches a preset feedback current, if so, controlling the driving motor to stop running, and enabling the probe to reach the surface of the product to be processed.
In the embodiment of the application, the control on the position and the pressure of the probe is converted into the monitoring on the feedback current of the driving motor through the distance between the probe and the surface of the product and the relation between the pressure and the feedback current of the driving motor. When the feedback current of the driving motor reaches the preset feedback current, the probe can be accurately controlled to stop moving in time, so that the probe can repair a product to be treated by spraying conductive fluid and the like.
Example 2
On the basis of example 1, the present application performs stepwise control of the speed of the probe.
Since the distance between the probe and the product is short and the moving speed of the probe is fast, the contact pressure between the probe and the product is not easy to control, and if the problem is solved by only reducing the probe speed, the detection and repair efficiency is reduced. The embodiment of the application divides the motion process of the probe into two stages:
the first stage, controlling the driving motor to drive the probe to move at a first speed until the probe reaches the preset position;
and in the second stage, when the probe reaches the preset position, controlling the driving motor to drive the probe to move at a second speed until the current feedback current of the driving motor reaches the preset feedback current, wherein the first speed is higher than the second speed.
A preset position is arranged between the initial position of the probe and the surface of the product, and the distance between the initial position of the probe and the surface of the product is divided into two parts through the preset position. Wherein the distance between the initial position of the probe and the surface of the product is a first distance and the distance between the initial position of the probe and the predetermined position is a second distance, where the second distance also corresponds to the distance traveled by the probe during the second stage. In the embodiment of the present application, the second distance is 50% -75% of the first distance, more specifically, the second distance is 50%, 55%, 60%, 65%, 70% and 75%, preferably 60% of the first distance, which is not exhaustive herein for reasons of space. It should be noted here that, in order to ensure the accuracy of the measurement, it is necessary to start the zeroing process of the probe initially, and calibrate the absolute positional relationship with respect to the zero point, that is, calibrate the initial position of the probe.
In the first stage, a higher working efficiency can be ensured by adopting a higher movement speed, and the probe moves to a preset position at a high speed; and in the second stage, when the probe reaches a preset position, the output current of the controller is limited to reduce the force of the driving motor, so that the aim of reducing the moving speed of the probe is fulfilled, the moving speed of the probe is reduced, and the phenomena that the pricking mark of the probe on a product is larger and the product is damaged are avoided.
For the parts of the second embodiment that are not described in detail, reference may be made to the descriptions of the foregoing embodiments, which are not described herein again.
EXAMPLE III
On the basis of the first embodiment and the second embodiment, when the current feedback current of the driving motor is judged to reach the preset feedback current, the probe is controlled to spray the conductive fluid on the product for repairing.
In the manufacturing process of some products, such as printed circuit boards, short circuits or open circuits of connecting circuits are easily caused due to production equipment and the like, and the direct scrapping of such defective products causes great economic loss, so that the circuits on such defective products need to be repaired. When the method is implemented specifically, a certain amount of conductive fluid is filled in the probe, and when the current feedback current of the driving motor reaches the preset feedback current, the probe is controlled to stay on the surface of a flaw product to be repaired for a preset time, so that the conductive fluid in the probe can repair a short circuit or open circuit connecting line on the surface of the flaw product. The conductive fluid can be silver paste or copper paste, and the silver paste or the copper paste can be used as the conductive fluid to ensure good conductivity. And after the current feedback current from the driving motor reaches the preset feedback current preset time, starting the driving motor to drive the probe to leave the surface of the product, and finishing the repairing process of the defective product.
In order to enable the conductive fluid in the probe to effectively repair the short circuit or open circuit connecting line on the surface of the defective product, the preset time for the probe to stay on the surface of the defective product needs to be controlled, and the preset time is 40-60ms, more specifically, 40ms, 45ms, 50ms, 55ms and 60ms, and preferably 50ms, and is not exhaustive here.
For the unrefined parts in the third embodiment, reference may be made to the descriptions of the foregoing embodiments, which are not repeated herein.
Example four
The present application also provides a probe control apparatus 10, as shown in fig. 2, the apparatus including:
and the controller 101 is configured to monitor a current feedback current of the driving motor 102, and stop operation of the driving motor 102 when it is determined that the current feedback current of the driving motor 102 reaches a preset feedback current.
The driving motor 102 is used for driving the probe to move under the control of the controller 101, and the preset feedback current corresponds to the probe to reach the surface of a product to be processed.
The driving motor 102 is an electromagnetic device that converts or transmits electric energy according to the law of electromagnetic induction, and mainly functions to generate driving torque as a power source for electrical appliances or various machines. As a preferred embodiment, the driving motor 102 includes at least one of a voice coil motor, a servo motor or a stepping motor, in this embodiment, the driving motor 102 is a voice coil motor. The voice coil motor has the advantages of simple structure, small volume, high speed, high acceleration response and the like, and is usually used for a positioning motion system requiring high acceleration, high frequency response, high speed and high precision. The embodiment of the application realizes the distance control that the probe moves down based on the current feedback of the voice coil motor, and can control the probe to timely stop after contacting the product, thereby avoiding the probe from pricking on the product.
Corresponding to embodiment 1, distance detection can be performed by means of the grating scale 103. At this time, the control device further comprises a grating ruler 103, the grating ruler 103 is used for outputting a pulse signal and feeding the pulse signal back to the controller 101, the controller 101 controls the emission of the pulse, and the probe can be controlled to accurately move to a preset position by emitting a certain number of pulses.
The probe control method and apparatus provided by the present application are introduced in detail, and specific examples are applied in the present application to explain the principle and the implementation manner of the present application, and the descriptions of the above examples are only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, the specific embodiments and the application range may be changed. In view of the above, the description should not be taken as limiting the application.

Claims (10)

1. A probe control method is characterized by comprising the following steps:
judging whether the probe reaches a preset position, if so, starting to monitor the feedback current of a driving motor, and controlling the driving motor to drive the probe to move;
and judging whether the feedback current of the driving motor reaches a preset feedback current, if so, controlling the driving motor to stop running, and enabling the probe to reach the surface of the product to be processed.
2. The probe control method according to claim 1, further comprising:
determining the current position of the probe by using a pulse signal output by a grating ruler and the initial position of the probe;
and judging whether the probe reaches the preset position according to the current position.
3. The probe control method according to claim 1, further comprising:
controlling the driving motor to drive the probe to move at a first speed until the probe reaches the preset position;
when the probe reaches the preset position, controlling the driving motor to drive the probe to move at a second speed until the current feedback current of the driving motor reaches the preset feedback current;
the first speed is higher than the second speed.
4. The probe control method according to claim 2, wherein a distance between the initial position of the probe and the surface of the product is a first distance, and a distance between the initial position of the probe and the preset position of the probe is a second distance, and the second distance is 50% to 75% of the first distance.
5. The probe control method according to claim 4, wherein the second distance is 60% of the first distance.
6. The probe control method according to claim 1, wherein the predetermined feedback current corresponds to the probe reaching the surface of the product and maintaining a predetermined curvature on the surface of the product.
7. The probe control method of claim 6, further comprising:
starting the driving motor to drive the probe to leave the surface of the product after the current feedback current away from the driving motor reaches the preset feedback current for a preset time;
the preset time is 40-60ms.
8. The probe control method according to claim 1, wherein the product to be processed is a defective product to be repaired;
the method further comprises the following steps:
and when judging that the current feedback current of the driving motor reaches a preset feedback current, controlling the probe to spray conductive fluid on the defective product for repair.
9. The probe control method of claim 1, wherein the drive motor comprises at least one of a voice coil motor, a servo motor, or a stepper motor.
10. A probe control apparatus, the apparatus comprising:
the controller is used for monitoring the current feedback current of the driving motor and stopping the operation of the driving motor when judging that the current feedback current of the driving motor reaches the preset feedback current;
the driving motor is used for driving the probe to move under the control of the controller;
and the preset feedback current corresponds to the probe reaching the surface of the product to be processed.
CN202211015924.XA 2022-08-23 2022-08-23 Probe control method and device Pending CN115334766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211015924.XA CN115334766A (en) 2022-08-23 2022-08-23 Probe control method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211015924.XA CN115334766A (en) 2022-08-23 2022-08-23 Probe control method and device

Publications (1)

Publication Number Publication Date
CN115334766A true CN115334766A (en) 2022-11-11

Family

ID=83926029

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211015924.XA Pending CN115334766A (en) 2022-08-23 2022-08-23 Probe control method and device

Country Status (1)

Country Link
CN (1) CN115334766A (en)

Similar Documents

Publication Publication Date Title
CN100509236C (en) Method for controlling contact load in electronic component mounting apparatus
CN106643473A (en) Automatic flatness detection device and method
CN104236465A (en) Machine for detecting tightening degree and center height of screw
CN100411093C (en) Positioning apparatus and method of controlling positioning apparatus
CN114813356B (en) Method for detecting welding quality of packaged chip welding leg
CN100348994C (en) Automatic detector and method for mechanical performance of push-pull circuit breaker
CN115334766A (en) Probe control method and device
CN203534562U (en) Square lithium battery electrical core constant voltage thickness measuring device
CN110850809A (en) Machine platform detection system and detection method
CN116222362A (en) Cutter height measurement method and device
CN113324753A (en) Testing device and testing method for delay time and response time of electromagnetic valve
CN109143020B (en) PCB testing method, device and testing equipment
CN109341504B (en) Method for automatically calibrating position coordinates of platform
JPH09189501A (en) Outer diameter measuring device
JP4255775B2 (en) Circuit board inspection equipment
CN109341642A (en) A kind of method measuring flatness and measuring device
SU1639938A1 (en) Method of detecting faulty assembling
CN220880935U (en) Laser and flame combined processing equipment
JP2019211408A (en) Movement device, substrate inspection device and control method
JP3237303B2 (en) Substrate inspection machine and substrate inspection method
CN220112885U (en) Measuring head of electrohydraulic beam machine tool
CN111366811B (en) Integrated automatic inspection device and method for electronic components
JPH08292230A (en) Apparatus and method for measuring electric characteristic of ic
JP6267546B2 (en) Contact position control method
JP3882874B2 (en) Product inspection method and apparatus in seesaw-operated electromagnetic relay

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