Method and device for separating film layer on glass lining plate, electronic equipment and storage medium

Abstract

The invention provides a method and device for separating a film layer on a glass lining plate, electronic equipment and a storage medium, and the method comprises the following steps: obtaining the tensile stress of a metal wire in the process of pulling the metal wire by using a traction device to separate the film layer on the glass lining plate; and according to the tensile stress, starting and stopping of the traction device are controlled until separation of the film layer is completed. Therefore, according to the method, the traction device is controlled to start and stop according to the detected tensile stress of the metal wire until the separation of the film layer is completed, so that the metal wire can work in an elastic stage under the driving action of the traction device, the use frequency of the metal wire can be increased, and the service life of the metal wire is prolonged; therefore, the metal wire does not need to be replaced frequently.

Description

Technical Field

[0001] The present invention relates to the field of glass technology, and in particular to a method, device, electronic equipment and storage medium for separating film layers on a glass lining. Background Art

[0002] UTG (Ultra Thin Glass) and CFG (Center Foldable Glass) products are obtained by using metal wire to separate the film layer on the glass liner. At present, the film layer separation technology has changed from the previous manual separation to automatic separation by mechanical equipment, but the difficulty of automatic separation by mechanical equipment is that the metal wire is easy to break. Therefore, increasing the number of times the metal wire is used and extending the life of the metal wire has become a difficulty in automatic separation by mechanical equipment. Summary of the invention

[0003] The present invention aims to solve the technical problems in the related art to a certain extent.

[0004] To this end, the first purpose of the present invention is to propose a method for separating the film layer on a glass lining plate. The method controls the start and stop of the traction device according to the tensile stress of the detected metal wire until the separation of the film layer is completed. This can ensure that the metal wire works in the elastic stage under the driving action of the traction device, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that there is no need to frequently replace the metal wire.

[0005] The second object of the present invention is to provide a membrane separation device on a glass lining plate.

[0006] A third objective of the present invention is to provide an electronic device.

[0007] A fourth object of the present invention is to provide a computer-readable storage medium.

[0008] A fifth object of the present invention is to provide a computer program product.

[0009] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present invention proposes a method for separating a film layer on a glass lining, comprising the following steps: obtaining the tensile stress of the metal wire in the process of using a traction device to pull a metal wire to separate the film layer on the glass lining; and controlling the start and stop of the traction device according to the tensile stress until the separation of the film layer is completed.

[0010] According to the method for separating the film layer on the glass lining plate of the embodiment of the present invention, the tensile stress of the metal wire is obtained in the process of using the traction device to pull the metal wire to separate the film layer on the glass lining plate, and the start and stop of the traction device are controlled according to the tensile stress until the separation of the film layer is completed. Therefore, the method controls the start and stop of the traction device according to the tensile stress of the metal wire detected until the separation of the film layer is completed, so that the metal wire can be driven by the traction device to work in the elastic stage, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that the metal wire no longer needs to be replaced frequently.

[0011] In addition, the film layer separation method on the glass liner provided in the first aspect of the present invention may also have the following additional technical features:

[0012] According to an embodiment of the present invention, controlling the start and stop of the traction device according to the tensile stress includes:

[0013] When the tensile stress is greater than or equal to a first set tensile stress, controlling the traction device to stop traction of the metal wire;

[0014] Determining whether the tensile stress is restored to be less than or equal to a second set tensile stress; wherein the second set tensile stress is less than the first set tensile stress;

[0015] If yes, the traction device is controlled to continue traction of the metal wire.

[0016] According to an embodiment of the present invention, the first set tensile stress and the second set tensile stress are both determined according to the yield strength of the metal wire; wherein,

[0017] The yield force is determined based on the nominal tensile strength, cross-sectional area, yield point coefficient and gravitational acceleration of the metal wire.

[0018] According to an embodiment of the present invention, the metal wire is one of a molybdenum wire, a copper wire and an alloy wire; wherein,

[0019] The diameter of the metal wire is less than or equal to 0.6 mm.

[0020] To achieve the above-mentioned purpose, the second aspect of the present invention proposes a device for separating a film layer on a glass lining, comprising: an acquisition module for acquiring the tensile stress of the metal wire in the process of using a traction device to pull the metal wire to separate the film layer on the glass lining; and a control module for controlling the start and stop of the traction device according to the tensile stress until the separation of the film layer is completed.

[0021] According to the device for separating the film layer on the glass lining plate of the embodiment of the present invention, the tensile stress of the metal wire is obtained by the acquisition module during the process of using the traction device to pull the metal wire to separate the film layer on the glass lining plate, and the start and stop of the traction device is controlled by the control module according to the tensile stress until the separation of the film layer is completed. Therefore, the device controls the start and stop of the traction device according to the tensile stress of the metal wire detected until the separation of the film layer is completed, so that the metal wire can be ensured to work in the elastic stage under the driving action of the traction device, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that the metal wire no longer needs to be replaced frequently.

[0022] In addition, the film layer separation device on the glass lining plate provided in the second aspect of the present invention may also have the following additional technical features:

[0023] According to one embodiment of the present invention, the control module includes:

[0024] a first control unit, configured to control the traction device to stop traction of the metal wire when the tensile stress is greater than or equal to a first set tensile stress;

[0025] A judging unit, used to judge whether the tensile stress is restored to be less than or equal to a second set tensile stress; wherein the second set tensile stress is less than the first set tensile stress;

[0026] The second control unit is used to control the traction device to continue to pull the metal wire when the tensile stress is restored to be less than or equal to the second set tensile stress.

[0027] According to an embodiment of the present invention, the first set tensile stress and the second set tensile stress are both determined according to the yield strength of the metal wire; wherein,

[0028] The yield force is determined based on the nominal tensile strength, cross-sectional area, yield point coefficient and gravitational acceleration of the metal wire.

[0029] According to an embodiment of the present invention, the metal wire is one of a molybdenum wire, a copper wire and an alloy wire; wherein,

[0030] The diameter of the metal wire is less than or equal to 0.6 mm.

[0031] To achieve the above-mentioned purpose, the third aspect of the present invention proposes an electronic device, comprising: a processor and a memory; wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the above-mentioned film layer separation method on the glass lining plate.

[0032] The electronic device of the embodiment of the present invention executes the above-mentioned film layer separation method on the glass lining plate, and controls the start and stop of the traction device according to the tensile stress of the detected metal wire until the separation of the film layer is completed. This can ensure that the metal wire works in the elastic stage under the driving action of the traction device, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that there is no need to frequently replace the metal wire.

[0033] To achieve the above-mentioned purpose, a fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the above-mentioned method for separating the film layer on the glass lining when executed by a processor.

[0034] The computer-readable storage medium of an embodiment of the present invention executes the above-mentioned film layer separation method on the glass lining plate, and controls the start and stop of the traction device according to the tensile stress of the detected metal wire until the separation of the film layer is completed. In this way, it can ensure that the metal wire works in the elastic stage under the driving action of the traction device, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that there is no need to frequently replace the metal wire.

[0035] To achieve the above-mentioned purpose, a fifth aspect of the present invention provides a computer program product. When the instruction processor in the computer program product is executed, the above-mentioned film layer separation method on the glass liner is performed.

[0036] The computer program product of the embodiment of the present invention executes the above-mentioned film layer separation method on the glass lining plate, and controls the start and stop of the traction device according to the tensile stress of the detected metal wire until the separation of the film layer is completed. In this way, it can ensure that the metal wire works in the elastic stage under the driving action of the traction device, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that there is no need to frequently replace the metal wire.

[0037] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0039] Figure 1 is a schematic diagram of a separation membrane layer in the related art;

[0040] Figure 2 is a flow chart of a film layer separation method on a glass liner according to an embodiment of the present invention;

[0041] Figure 3 is a schematic diagram of a membrane layer separation process according to an embodiment of the present invention;

[0042] Figure 4 Detailed description of the invention The figure is a schematic block diagram of a membrane layer separation device on a glass liner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0044] The following describes a method for separating a film layer on a glass liner, a device for separating a film layer on a glass liner, an electronic device, and a computer-readable storage medium according to embodiments of the present invention with reference to the accompanying drawings.

[0045] The method for separating the film layer on the glass liner in the related art is wire cutting, where wire cutting is the abbreviation of wire cutting. The basic principle of wire cutting is as follows: Figure 1 As shown, a metal wire is used, the metal wire is fixed at two end points, and then the two end points are pushed simultaneously by a traction device such as a servo traction device, so that the film layer on the glass lining can be separated from the lining plate under the action of the cutting force of the metal wire.

[0046] However, this solution has the following disadvantages: during the power cutting process, the metal wire will be twisted and deformed due to the resistance reaching a certain level, causing the metal wire to be elongated and the wire diameter to become smaller. The metal wire may even be unable to return to its previous state when the resistance is lost, resulting in a reduction in the number of times the metal wire is used and its lifespan, so the metal wire needs to be replaced frequently.

[0047] To this end, the present invention proposes a new method for separating the film layer on a glass lining plate. The method controls the start and stop of the traction device according to the detected tensile stress of the metal wire until the separation of the film layer is completed. This can ensure that the metal wire works in the elastic stage under the driving action of the traction device, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that there is no need to frequently update the metal wire.

[0048] Figure 2 Detailed description is a flow chart of a method for separating a film layer on a glass liner according to an embodiment of the present invention.

[0049] like Figure 2 As shown, the film layer separation method on the glass liner of the embodiment of the present invention comprises the following steps:

[0050] S201, in the process of using a traction device to pull a metal wire to separate a film layer on a glass lining plate, obtaining the tensile stress of the metal wire.

[0051] In an embodiment of the present invention, the metal wire is one of a molybdenum wire, a copper wire and an alloy wire; wherein the diameter of the metal wire is less than or equal to 0.6 mm.

[0052] S202, controlling the start and stop of the traction device according to the tensile stress until the separation of the membrane layer is completed.

[0053] In this embodiment, before the film layer on the glass lining is separated, an electronic detector (such as a tension detector) is added to the traction device to detect the tensile stress of the metal wire, and a first set tensile stress and a second set tensile stress are set in the controller of the traction device. The first set tensile stress is 80% of the yield force of the metal wire, and the second set tensile stress is 30% of the yield force of the metal wire. The yield force is determined according to the nominal tensile strength, cross-sectional area, yield point coefficient and gravitational acceleration of the metal wire. For example, the yield force calculation formula is F=σ*s*K*10, where σ represents the nominal tensile strength (unit: kg / mm 2 ), S represents the cross-sectional area of ​​the wire, K represents the yield point coefficient, and 10 represents the acceleration of gravity. According to the calculation formula of the cross-sectional area of ​​the wire, the calculation formula of the yield force can be obtained: The nominal tensile strength, diameter and yield point coefficient can be obtained by referring to the parameter table provided by the supplier. For example, when the nominal tensile strength is 200kg / mm 2 When the wire is

[0054] Combination Figure 3 As shown, the metal wire is fixed on two end points, and a traction device is used to push the two end points and apply force, and the tensile stress of the metal wire is obtained in real time. When the tensile stress of the metal wire is greater than or equal to the first set tensile stress, such as 80% of the yield strength of the metal wire (such as 311.92N), the traction device is controlled to stop pulling the metal wire. After the metal wire loses the traction of the traction device, it will gradually return to its previous state. In this process, the resistance encountered by the metal wire gradually increases, and the cutting speed will become slower and slower. It is continued to be judged whether the tensile stress of the metal wire is restored to less than or equal to 30% of the yield strength of the metal wire of the second set tensile stress (such as 116.97N). If so, the traction device is controlled to continue to start traction on the metal wire, and in the subsequent traction process, the tensile stress of the metal wire is continued to be obtained, and the start and stop of the traction device are continued to be controlled according to the tensile stress until the separation of the film layer is completed.

[0055] In summary, according to the method for separating the film layer on the glass lining plate of the embodiment of the present invention, the tensile stress of the metal wire is obtained in the process of using the traction device to pull the metal wire to separate the film layer on the glass lining plate, and the start and stop of the traction device are controlled according to the tensile stress until the separation of the film layer is completed. Therefore, the method controls the start and stop of the traction device according to the tensile stress of the metal wire detected until the separation of the film layer is completed, so that the metal wire can be driven by the traction device to work in the elastic stage, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that the metal wire no longer needs to be frequently updated.

[0056] Figure 4 Detailed description of the invention The figure is a schematic block diagram of a membrane layer separation device on a glass liner according to an embodiment of the present invention.

[0057] like Figure 4 As shown, the film layer separation device 400 on the glass liner according to the embodiment of the present invention includes: an acquisition module 410 and a control module 420.

[0058] The acquisition module 410 is used to acquire the tensile stress of the metal wire during the process of using the traction device to pull the metal wire to separate the film layer on the glass liner. The control module 420 is used to control the start and stop of the traction device according to the tensile stress until the film layer is separated.

[0059] According to one embodiment of the present invention, the control module 420 includes: a first control unit, used to control the traction device to stop pulling the metal wire when the tensile stress is greater than or equal to the first set tensile stress; a judgment unit, used to judge whether the tensile stress is restored to less than or equal to the second set tensile stress; wherein the second set tensile stress is less than the first set tensile stress; and a second control unit, used to control the traction device to continue to start pulling the metal wire when the tensile stress is restored to less than or equal to the second set tensile stress.

[0060] According to one embodiment of the present invention, the first set tensile stress and the second set tensile stress are both determined according to the yield force of the metal wire; wherein the yield force is calculated based on the nominal tensile strength, cross-sectional area, yield point coefficient and gravitational acceleration of the metal wire.

[0061] According to an embodiment of the present invention, the metal wire is one of a molybdenum wire, a copper wire and an alloy wire; wherein the diameter of the metal wire is less than or equal to 0.6 mm.

[0062] It should be noted that, for details not disclosed in the membrane layer separation device on the glass lining plate of the embodiment of the present invention, please refer to the details disclosed in the membrane layer separation method on the glass lining plate of the embodiment of the present invention, and the details will not be repeated here.

[0063] According to the device for separating the film layer on the glass lining plate of the embodiment of the present invention, the tensile stress of the metal wire is obtained by the acquisition module in the process of using the traction device to pull the metal wire to separate the film layer on the glass lining plate, and the start and stop of the traction device is controlled by the control module according to the tensile stress until the separation of the film layer is completed. Therefore, the device controls the start and stop of the traction device according to the tensile stress of the metal wire detected until the separation of the film layer is completed, so that the metal wire can be driven by the traction device to work in the elastic stage, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that the metal wire no longer needs to be frequently updated.

[0064] Based on the above embodiments, the present invention further provides an electronic device.

[0065] An electronic device according to an embodiment of the present invention comprises: a processor and a memory; wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the above-mentioned film layer separation method on the glass lining plate.

[0066] The electronic device of the embodiment of the present invention executes the above-mentioned film layer separation method on the glass lining plate, and controls the start and stop of the traction device according to the tensile stress of the detected metal wire until the separation of the film layer is completed. This can ensure that the metal wire works in the elastic stage under the driving action of the traction device, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that there is no need to frequently update the metal wire.

[0067] Based on the above embodiments, the present invention also proposes a computer-readable storage medium.

[0068] A computer program is stored on a computer-readable storage medium in an embodiment of the present invention. When the computer program is executed by a processor, the above-mentioned film layer separation method on a glass liner is implemented.

[0069] The computer-readable storage medium of an embodiment of the present invention executes the above-mentioned film layer separation method on the glass lining plate, and controls the start and stop of the traction device according to the tensile stress of the detected metal wire until the separation of the film layer is completed. In this way, it can ensure that the metal wire works in the elastic stage under the driving action of the traction device, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that there is no need to frequently update the metal wire.

[0070] Based on the above embodiments, the present invention also proposes a computer program product.

[0071] When the instruction processor in the computer program product of the embodiment of the present invention is executed, the above-mentioned film layer separation method on the glass liner is performed.

[0072] The computer program product of the embodiment of the present invention executes the above-mentioned film layer separation method on the glass lining plate, and controls the start and stop of the traction device according to the tensile stress of the detected metal wire until the separation of the film layer is completed. In this way, it can ensure that the metal wire works in the elastic stage under the driving action of the traction device, thereby increasing the number of times the metal wire is used and extending the service life of the metal wire, so that there is no need to frequently update the metal wire.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0075] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0076] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0077] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0078] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0079] In addition, each functional unit in each embodiment of the present invention may be integrated into one module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0080] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for separating a film layer on a glass liner, characterized in that: The following steps are involved: In the process of using a traction device to pull the metal wire to separate the film layer on the glass lining plate, obtaining the tensile stress of the metal wire; The start and stop of the traction device are controlled according to the tensile stress until the separation of the film layer is completed.

2. The film separation method on a glass lining plate according to claim 1, characterized in that: The controlling the start and stop of the traction device according to the tensile stress includes: When the tensile stress is greater than or equal to a first set tensile stress, controlling the traction device to stop traction of the metal wire; Determining whether the tensile stress is restored to be less than or equal to a second set tensile stress; wherein the second set tensile stress is less than the first set tensile stress; If yes, the traction device is controlled to continue traction of the metal wire.

3. The film separation method on the glass lining plate according to claim 2, characterized in that: The first set tensile stress and the second set tensile stress are both determined according to the yield strength of the metal wire; wherein, The yield force is determined based on the nominal tensile strength, cross-sectional area, yield point coefficient and gravitational acceleration of the metal wire.

4. The film separation method on a glass liner according to any one of claims 1 to 3, characterized in that: The metal wire is one of molybdenum wire, copper wire and alloy wire; wherein, The diameter of the metal wire is less than or equal to 0.6 mm.

5. A membrane separation device on a glass lining plate, characterized in that: include: An acquisition module, used for acquiring the tensile stress of the metal wire in the process of using a traction device to pull the metal wire to separate the film layer on the glass lining plate; The control module is used to control the start and stop of the traction device according to the tensile stress until the separation of the film layer is completed.

6. The film separation device on the glass lining plate according to claim 5, characterized in that: The control module comprises: a first control unit, configured to control the traction device to stop traction of the metal wire when the tensile stress is greater than or equal to a first set tensile stress; A judging unit, used to judge whether the tensile stress is restored to be less than or equal to a second set tensile stress; wherein the second set tensile stress is less than the first set tensile stress; The second control unit is used to control the traction device to continue to pull the metal wire when the tensile stress is restored to be less than or equal to the second set tensile stress.

7. The film separation device on the glass lining plate according to claim 6, characterized in that: The first set tensile stress and the second set tensile stress are both determined according to the yield strength of the metal wire; wherein, The yield force is determined based on the nominal tensile strength, cross-sectional area, yield point coefficient and gravitational acceleration of the metal wire.

8. The membrane separation device on a glass lining plate according to any one of claims 5 to 7, characterized in that: The metal wire is one of molybdenum wire, copper wire and alloy wire; wherein, The diameter of the metal wire is less than or equal to 0.6 mm.

9. An electronic device, characterized in that: include: Processor and memory; The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the film layer separation method on the glass lining plate according to any one of claims 1 to 4.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for separating a film layer on a glass lining plate according to any one of claims 1 to 4 is implemented.

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