CN220926580U - Optical fiber drawing equipment and special shell thereof - Google Patents

Abstract

The application provides an optical fiber drawing device and a special shell thereof, comprising a shell, a shell and a shell, wherein the shell is used for covering the optical fiber drawing device in a buckling installation mode; the shell is provided with a first opening, and the first opening is a strip-shaped opening extending along a first direction; the first direction is parallel to the drawing direction of the optical fiber drawing equipment, and the first opening can correspond to a drawing channel on the optical fiber drawing equipment, so that the first opening is used as an operation opening on the shell; through the cover establish the casing on wire drawing equipment, and set up the first opening of bar on this casing to with the shape structure of first opening and the wire drawing passageway looks adaptation on the optical wire drawing equipment, the wire drawing equipment of solving the configuration special shell still can carry out the allotment of adaptability and observe the wire drawing condition to the wire drawing in-process in wire drawing process, with on the basis that the greasy dirt splashes to other wire drawing equipment is kept out through special shell, still can improve production quality through real-time observation and its debugging optical fiber.

Description

Optical fiber drawing equipment and special shell thereof

Technical Field

The application relates to the technical field of drawing equipment, in particular to optical fiber drawing equipment and a special shell thereof.

Background

The optical fiber image transmission element is used for integrating soft optical fibers into a beam shape and transmitting optical images by the principle of total reflection of light in fiber filaments, and is widely used in photoelectric signal detection, identification and imaging equipment in the fields of weapons, electronics, aerospace, nuclear detection and the like at present; in the manufacturing process of the optical fiber, a drawing process is required to be performed on the preform tube by a drawing apparatus.

In the prior art, the production of optical fibers has been scaled up, and the production scale is determined by the number of drawing devices, so that when the production scale is enlarged to meet the market demand, the number of drawing devices must be increased. Because the rotating shaft continuously rotates in the wire drawing process of the wire drawing equipment, centrifugal force is generated inside the rotating shaft, so that lubricating oil in the bearing is outwards splashed, and because of the limitation of a production field, after the distance between the wire drawing equipment is reduced, the outwards splashed greasy dirt is easy to influence optical fibers on adjacent wire drawing equipment; therefore, when the technical defect is met, the outer peripheral surface of the drawing equipment can be sleeved with a shell for resisting oil stains, so that the optical fibers on other drawing equipment are prevented from being polluted.

However, since the optical fiber needs to be debugged and the drawing condition needs to be observed in the drawing process, unnecessary troubles and technical defects of the drawing equipment are caused after the shell in the prior art is arranged on the drawing equipment.

Disclosure of utility model

The embodiment of the application aims to provide optical fiber drawing equipment and a special shell thereof, wherein a shell is sleeved on the optical fiber drawing equipment, a first strip-shaped opening is formed in the shell, and the shape structure of the first opening is matched with a drawing channel on the optical fiber drawing equipment, so that the technical problems that the optical fiber drawing equipment sleeved with the special shell still can be subjected to adaptive allocation and drawing condition observation in the drawing process are solved.

In order to solve the technical problems, the following technical solutions are provided in the embodiments of the present application:

The first aspect of the present application provides a special housing for an optical fiber drawing apparatus, the special housing comprising a housing for covering the optical fiber drawing apparatus in a snap-fit arrangement; the shell is provided with a first opening, and the first opening is a strip-shaped opening extending along a first direction; the first direction is parallel to the drawing direction of the optical fiber drawing device, and the first opening can correspond to a drawing channel on the optical fiber drawing device, so that the first opening is used as an operation opening on the shell.

In some variations of the first aspect of the application, the special housing further comprises a shield plate hingedly connected to the housing; the protection plate opens and closes the first opening through the rotation of the hinged connection.

In some variant embodiments of the first aspect of the application, the protection plate is provided in an elongated shape adapted to the first opening.

In some variations of the first aspect of the present application, the material of which the shield is made is provided as a transparent material.

In some variations of the first aspect of the present application, the housing includes a first body and a second body spaced apart by a base; the first body and the second body extend along a first direction respectively to form a first opening between the first body and the second body.

In some variations of the first aspect of the present application, the first side of the first body is provided with a shield plate by means of a hinge; or (b)

The third side of the second main body is provided with a protection plate in a hinging mode;

wherein, the guard plate opens and closes first opening with the rotation through articulated connecting portion.

In some variations of the first aspect of the present application, a second side of the first body opposite the first side and a fourth side of the second body opposite the third side are provided with baffle assemblies; the baffle plate component extends along a second direction and is used for covering a rotating shaft on the optical fiber drawing equipment;

wherein the second direction is a direction in which the first body and the second body face the optical fiber drawing apparatus, so that the housing forms a space capable of accommodating the optical fiber drawing apparatus.

In some variations of the first aspect of the present application, the baffle assembly includes first and second baffle members disposed on the first body, and third and fourth baffle members disposed on the second body;

the first baffle plate and the second baffle plate are arranged at a second side along a first direction at intervals and can correspond to two rotating shafts on the same side of the optical fiber drawing equipment so as to form a first debugging port between the first baffle plate and the second baffle plate;

the third baffle member and the fourth baffle member are arranged at a fourth side along the first direction at intervals, and can correspond to two rotating shafts on the other side of the optical fiber drawing device, so that a second debugging port is formed between the third baffle member and the second baffle member.

In some variations of the first aspect of the present application, at least one mounting member is mounted on the first side walls of the first and second bodies, respectively, for mounting the housing on an optical fiber drawing apparatus; the first side wall is a side wall of the first main body and the second main body, which is close to the optical fiber drawing equipment.

A second aspect of the present application provides an optical fiber drawing apparatus comprising the special housing in the above technical solution.

Compared with the prior art, the optical fiber drawing equipment and the special shell thereof provided by the application have the advantages that the shell is sleeved on the optical fiber drawing equipment, the strip-shaped first opening is formed in the shell, the shape structure of the first opening is matched with the drawing channel on the optical fiber drawing equipment, and the drawing process of the optical fiber drawing equipment can be displayed in real time by the first opening, so that the drawing state of the optical fiber drawing equipment can be debugged and observed in real time after the optical fiber drawing equipment is provided with the special shell for resisting oil dirt splashing, and the optical fiber can be debugged by the real-time observation and the real-time observation on the basis of resisting oil dirt sputtering other drawing equipment through the special shell, thereby improving the production quality of the optical fiber.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, wherein like or corresponding reference numerals indicate like or corresponding parts, there are shown by way of illustration, and not limitation, several embodiments of the application, in which:

FIG. 1 schematically illustrates a schematic perspective view of the inside of a special housing in an embodiment of the application;

Fig. 2 schematically shows a schematic perspective view of the outside of the dedicated housing in an embodiment of the application.

Reference numerals illustrate:

1. a housing; 10. a first opening; 1a, a first side wall;

11. a first body; 111. a first baffle member; 112. a second baffle member;

12. a second body; 121. a third baffle member; 122. a fourth baffle member;

13. a base;

2. A protection plate; 3. a first debug port; 4. a second debug port; 5. and (5) mounting the component.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.

Referring to fig. 1 and 2, an embodiment of the present application proposes an optical fiber drawing apparatus and a dedicated housing therefor;

Because the wire drawing equipment for producing the optical fiber is sleeved with the wire drawing crawler belt, the wire drawing crawler belt is driven by the transmission of the rotating shaft to stretch the prefabricated upper pipe into the optical fiber, and the rotating shaft can form centrifugal force in the rotating shaft in the rotating process, so that lubricating oil in the rotating shaft splashes outwards, and the optical fiber on the equipment in the stretching process generates a space between the wire drawing crawler belt and the corresponding rotating shaft, the wire drawing equipment does not cause serious pollution to the optical fiber which is being stretched by the wire drawing equipment, and is easy to influence the optical fiber on the adjacent wire drawing equipment deeply; therefore, the shell capable of resisting splashing oil stains is arranged on the wire drawing equipment, and if the wire drawing equipment is provided with the shell and then the wire drawing condition can be observed normally and the wire drawing process is correspondingly debugged, the shell needs to be further improved to form a special shell of the optical fiber wire drawing equipment.

Specifically, the method comprises the following steps: the device comprises a shell 1, and a first opening 10 for observation and debugging is formed in the shell 1. The first opening 10 is configured to be adapted to the channel of the optical fiber drawing device for drawing, i.e. after the housing 1 has been arranged on the optical fiber drawing device, the entire drawing process and the adjustment operation thereof during the drawing process can be observed through the first opening 10.

According to the above listed embodiments of the present application, in a first aspect, a special housing for an optical fiber drawing apparatus is provided, comprising a housing 1 for covering the optical fiber drawing apparatus in a snap-fit manner; the shell 1 is provided with a first opening 10, and the first opening 10 is a strip-shaped opening extending along a first direction;

The first direction is parallel to the drawing direction of the optical fiber drawing device, and the first opening 10 can correspond to a drawing channel on the optical fiber drawing device, so that the first opening 10 is used as an operation opening on the housing 1.

Specifically, in the technical scheme adopted by the application, the shell 1 of the special shell is provided with the first long-strip-shaped opening 10, the first opening 10 can be extended with the wire drawing direction of the wire drawing equipment to form a strip-shaped structure, the wire drawing direction of the wire drawing equipment is not the intersection direction, but the direction longitudinally or transversely parallel to the wire drawing direction can be defined as the first direction, the first opening 10 corresponds to the wire drawing channel on the wire drawing equipment, that is, after the shell is arranged on the wire drawing equipment, the shell 1 of the shell can be buckled on the periphery of the wire drawing equipment to prevent oil stains from splashing, meanwhile, the wire drawing condition of the wire drawing channel can be mapped through the first opening 10 on the shell 1, so that the wire drawing condition can be observed after the shell is arranged on the wire drawing equipment, and the wire drawing condition can be correspondingly debugged through the first opening 10 according to the actual wire drawing condition.

Further, referring to fig. 1 and 2, in some embodiments, the special case further comprises a protection plate 2, which is connected with the housing 1 in a hinged manner; the protection plate 2 opens and closes the first opening 10 by rotation of the hinge connection.

Specifically, in the technical scheme adopted by the application, a protection plate 2 is arranged on a shell. The protection plate 2 is a door plate for preventing the optical fiber from being touched by mistake. The protection plate 2 is connected to the shell 1 in a hinged manner, so that the first opening 10 can be opened and closed through a connecting part on a hinged structure, and particularly, the protection plate 2 is turned over through the hinged structure, so that the first opening 10 is closed for protection against false touch, or the first opening 10 is opened for debugging.

Further, referring to fig. 1 and 2, in some embodiments, the shielding plate 2 is provided in a long strip shape adapted to the first opening 10.

Specifically, in the technical scheme adopted by the application, the protection plate 2 can be arranged in a strip shape matched with the first opening 10, the protection plate 2 can be arranged on the side wall of the shell 1 forming the first opening 10 through a hinge structure, the side wall of the shell 1 on which the protection plate 2 is arranged can be understood as the side wall of the first opening 10, so that the protection plate 2 matched with the first opening 10 can be covered on the first opening 10 through the hinge structure when the protection plate 2 is overturned, and the protection effect is achieved; when the optical fiber in the stretching process needs to be correspondingly debugged, the protection plate 2 is opened to debug through the first opening 10, and after the debugging is finished, the first opening 10 can be closed through the protection plate 2, so that the situation of false touch is avoided.

Further, referring to fig. 1 and 2, in some embodiments, the material of which the shield plate 2 is made is provided as a transparent material.

Specifically, in the technical scheme adopted by the application, the manufacturing materials of the protection plate 2 can be transparent glass plates, tempered transparent glass plates, transparent acrylic plates and the like; because the material that guard plate 2 selected is transparent material to close behind the first opening 10 through guard plate 2, also can observe the wire drawing process of wire drawing equipment effectively. The manufacturing operation of the protection plate 2 in the present application is preferably a transparent acrylic plate.

Further, referring to fig. 1 and 2, in some embodiments, the housing 1 includes a first body 11 and a second body 12 spaced apart by a base 13; the first body 11 and the second body 12 extend along a first direction, respectively, to form a first opening 10 between the first body 11 and the second body 12.

Specifically, in the technical solution adopted in the present application, the first body 11 and the second body 12 are preferably in a strip-shaped plate structure, and the first body 11 and the second body 12 are respectively fixedly connected with the base 13, so that, in order to form the first opening 10 on the housing 1, the first body 11 and the second body 12 respectively extend along the first direction and are arranged on the base 13 at intervals, thereby forming the first opening 10 between the first body 11 and the second body 12.

In some embodiments, the first opening 10 may be formed in the housing 1, that is, the housing 1 includes a base 13 and a main body, and the first opening 10 is formed in the main body, so that the first opening 10 can correspond to a drawing channel on the drawing device.

Further, referring to fig. 1 and 2, in some embodiments, a first side of the first body 11 is provided with a shielding plate 2 by means of a hinge; or (b)

A third side of the second body 12 is provided with a shielding plate 2 in a hinged manner;

Wherein the protection plate 2 opens and closes the first opening 10 by rotation of the hinge connection.

Specifically, in the technical scheme adopted by the application, the protection plate 2 can be installed on the side wall of one side of the first main body 11, which is close to the second main body 12, in a hinged manner, so that the protection plate 2 can be turned over by a hinged structure to cover the first opening 10; in an embodiment of the present application, a side of the first body 11 adjacent to the second body 12 may be defined as a first side.

In some embodiments, the protection plate 2 may be mounted on a side wall of the second body 12 near the first body 11 in a hinged manner, so that the protection plate 2 can be turned over by a hinge structure to cover the first opening 10; in an embodiment of the present application, a side of the second body 12 adjacent to the first body 11 may be defined as a third side.

According to the above two embodiments, the protection plate 2 having the shape and structure adapted to the first opening 10 may be openably and closably disposed in the first opening 10 of the housing 1.

Further, referring to fig. 1 and 2, in some embodiments, a second side of the first body 11 opposite the first side is provided with a baffle assembly, and a fourth side of the second body 12 opposite the third side is provided with a baffle assembly; the baffle plate component extends along a second direction and is used for covering a rotating shaft on the optical fiber drawing equipment;

Wherein the second direction is the direction in which the first body 11 and the second body 12 are directed towards the optical fiber drawing device, so that the housing 1 forms a space capable of accommodating the optical fiber drawing device.

Specifically, in the technical scheme adopted by the application, the baffle assemblies can be arranged on the outer sides of the first main body 11 and the second main body 12, and in order to resist oil stains splashed outwards by the rotating shafts, the baffle assemblies are arranged as parts of a plate-shaped structure of the shell 1 extending towards the wire drawing equipment, and the baffle assemblies can cover the outer sides of the rotating shafts on the wire drawing equipment so as to realize the effect of resisting the splashing of the oil stains of the rotating shafts, and effectively avoid the influence of the oil stains splashed by the rotating shafts on the wire drawing equipment on optical fibers on the wire drawing equipment adjacent to the rotating shafts. The outer side of the first body 11 may be defined as the second side and the outer side of the second body 12 may be positioned as the fourth side in the present application.

In some embodiments, since the baffle assemblies on the first body 11 and the second body 12 are disposed on the outer side, and the baffle assemblies extend toward the housing 1 in a direction approaching the drawing apparatus, a space for accommodating the drawing apparatus is formed on the housing 1. When the special shell is buckled on the drawing equipment, the first main body 11 and the second main body 12 are respectively covered on the left side and the right side of the front face of the drawing equipment, and the baffle assembly is respectively covered on the outer side of the drawing equipment aiming at each rotating shaft so as to prevent oil stains from splashing.

Further, referring to fig. 1 and 2, in some embodiments, the baffle assembly includes a first baffle member 111 and a second baffle member 112 disposed on the first body 11, and a third baffle member 121 and a fourth baffle member 122 disposed on the second body 12; the first baffle member 111 and the second baffle member 112 are disposed at a second side along the first direction at intervals, and can correspond to two rotating shafts on the same side of the optical fiber drawing device, so as to form a first debugging port 3 between the first baffle member 111 and the second baffle member 112;

The third baffle member 121 and the fourth baffle member 122 are disposed at a fourth side along the first direction at intervals, and can correspond to two rotating shafts on the other side of the optical fiber drawing apparatus, so as to form the second debug port 4 between the third baffle member 121 and the second baffle member 112.

Specifically, in the technical scheme adopted by the application, baffle members can be respectively arranged at the outer side of the first main body 11 and the outer side of the second main body 12, so that splashed oil stains can be isolated by the baffle members on the shell 1; that is to say, the baffle assembly is at least composed of two baffle members respectively arranged at the outer side of the first main body 11 and the outer side of the second main body 12, so as to prevent the oil stains splashed outwards by the rotating shaft. It should be noted that the outer side of the first body 11 may be defined as the second side; and the outer side of the second body 12 is defined as a fourth side.

In some embodiments, the baffle assembly preferably includes a first baffle member 111, a second baffle member 112, a third baffle member 121, and a fourth baffle member 122;

The first baffle member 111 and the second baffle member 112 may be formed on the second side of the first body 11 with the first baffle member 111 and the second baffle member 112 being spaced apart, so that a first debug port 3 is formed between the first baffle member 111 and the second baffle member 112, the first debug port 3 being capable of corresponding to a wire-drawing track disposed on a side rotating shaft of the wire-drawing apparatus, and the first debug port 3 being used for debugging the wire-drawing track. It will be appreciated that the two rotating shafts on which the wire-drawing track is assembled are respectively covered in the outer side direction thereof by the first baffle member 111 and the second baffle member 112, so that the wire-drawing track between the rotating shafts can be exposed through the first debugging port 3, so that corresponding debugging can be performed thereon.

The third barrier member 121 and the fourth barrier member 122 may be molded on the fourth side of the second body 12, and the third barrier member 121 and the fourth barrier member 122 may be spaced apart, thereby forming the second debug port 4 between the third barrier member 121 and the fourth barrier member 122; it should be noted that the second debug port 4 is identical to the first debug port 3, and the third baffle member 121 and the fourth baffle member 122 are identical to the first baffle member 111 and the second baffle member 112, and it is also understood that the structure of the first main body 11 is identical to the structure of the second main body 12, so that the third baffle member 121 and the fourth baffle member 122 can cover corresponding rotating shafts on the outer sides thereof, and the second debug port 4 can debug corresponding wire-drawing tracks, so that detailed description will not be given.

Further, referring to fig. 1 and 2, in some embodiments, at least one mounting member 5 is mounted on the first side walls 1a of the first body 11 and the second body 12, respectively, for mounting the housing 1 on an optical fiber drawing apparatus;

Wherein the first side wall 1a is a side wall of the first body 11 and the second body 12 close to the optical fiber drawing device.

Specifically, in the technical scheme adopted by the application, a mounting component 5 for fixing on a wire drawing device is arranged on a shell 1, wherein the mounting component 5 can be positioned on a base 13 or on a first main body 11 and a second main body 12; only the special shell is fixed on the wire drawing equipment.

Preferably, the mounting members 5 are provided on the first body 11 and the second body 12, and the number of the mounting members 5 is at least two, and are respectively connected to the inner side walls of the first body 11 and the second body 12, so that the dedicated housing is fixed to the drawing apparatus by the mounting members 5; it should be noted that: the inner side walls of the first body 11 and the second body 12 may be defined as the first side wall 1a.

In some embodiments, the mounting component 5 may be connected to the drawing device by a fastener, or may be connected to the drawing device by a snap-fit manner;

When the special shell is connected by adopting a fastening piece, the stability of a connecting structure between the special shell and the wire drawing equipment is effectively improved, and the special shell is not easy to fall off;

In the application, when the mounting component 5 is connected in a buckling manner, the special shell can be conveniently and quickly detached.

According to the above listed embodiments of the present application in a second aspect an optical fiber drawing apparatus is presented comprising the dedicated housing of the above described embodiments.

Specifically, in the technical scheme adopted by the application, the optical fiber drawing equipment comprises a drawing equipment body and a special shell covered on the equipment body; specific embodiments are described with reference to the specific housing embodiments in the examples above and will not be described in detail.

It should be noted that, in the description of the present specification, the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A special housing for an optical fiber drawing apparatus, comprising:

a housing for covering the optical fiber drawing device in a snap-fit manner;

The shell is provided with a first opening, and the first opening is a strip-shaped opening extending along a first direction;

The first direction is parallel to the drawing direction of the optical fiber drawing device, and the first opening can correspond to a drawing channel on the optical fiber drawing device, so that the first opening is used as an operation port on the shell.

2. The special housing for an optical fiber drawing apparatus according to claim 1, further comprising:

a shielding plate connected with the housing in a hinge manner;

the protection plate opens and closes the first opening through rotation of the hinged connection.

3. A special housing for an optical fiber drawing apparatus according to claim 2,

The protection plate is arranged to be strip-shaped and matched with the first opening.

4. A special housing for an optical fiber drawing apparatus according to claim 2 or 3,

The manufacturing material of the protection plate is transparent.

5. A special housing for an optical fiber drawing apparatus according to claim 1,

The shell comprises a first main body and a second main body which are arranged at intervals through a base;

The first body and the second body extend along a first direction respectively to form the first opening between the first body and the second body.

6. A special housing for an optical fiber drawing apparatus according to claim 5,

The first side of the first main body is provided with a protection plate in a hinged mode; or (b)

The third side of the second main body is provided with a protection plate in a hinging mode;

Wherein, the guard plate is in order to open and close the first opening through the rotation of articulated connecting portion.

7. A special housing for an optical fiber drawing apparatus according to claim 6,

A second side of the first body opposite to the first side and a fourth side of the second body opposite to the third side are provided with baffle assemblies;

The baffle plate component extends along a second direction and is used for covering a rotating shaft on the optical fiber drawing equipment;

Wherein the second direction is a direction in which the first body and the second body face the optical fiber drawing apparatus, so that the housing forms a space capable of accommodating the optical fiber drawing apparatus.

8. A special housing for an optical fiber drawing apparatus according to claim 7,

The baffle assembly comprises a first baffle plate member and a second baffle plate member which are arranged on the first main body, and a third baffle plate member and a fourth baffle plate member which are arranged on the second main body;

The first baffle plate and the second baffle plate are arranged on the second side at intervals along the first direction and can correspond to two rotating shafts on the same side of the optical fiber drawing equipment, so that a first debugging port is formed between the first baffle plate and the second baffle plate;

The third baffle plate and the fourth baffle plate are arranged on the fourth side along the first direction at intervals and can correspond to two rotating shafts on the other side of the optical fiber drawing equipment, so that a second debugging port is formed between the third baffle plate and the second baffle plate.

9. A special housing for an optical fiber drawing apparatus according to any one of claims 5 to 8,

At least one mounting component is respectively arranged on the first side walls of the first main body and the second main body and is used for mounting the shell on the optical fiber drawing equipment;

The first side wall is a side wall of the first main body and the second main body, which is close to the optical fiber drawing equipment.

10. An optical fiber drawing apparatus, comprising:

the special-purpose enclosure of any one of the preceding claims 1-9.