Machine head and cable extruder

Abstract

The utility model discloses a machine head and cable extruder relates to cable extruder technical field, wherein the machine head includes body part, eye mould and pressing piece, the body part is equipped with feed hole and wire through hole that are communicated, the body part forms wire inlet end and wire outlet end respectively at the both ends of wire through hole extension direction, the end face of wire outlet end is equipped with the slot, and the hole mould is equipped with the pressing piece. The eye mold is detachably inserted into the insertion groove, the eye mold is provided with a forming hole, the forming hole and the wire passing hole are communicated and coaxial, and the pressing piece is detachably arranged on the body part and abuts against the end, away from the wire inlet end, of the eye mold. According to the machine head and the cable extruder disclosed by the utility model, the operation is simpler and more convenient, and more time and labor are saved when the eye mold needs to be disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a machine head and a cable extruder. Background Art

[0002] An extruder, also called an extruder, is a device used to extrude an insulating layer onto the outside of a conductor. It generally includes an extruder body and a head mounted on the extruder body. The head is provided with a feed hole, which is connected to the inner cavity of the extruder body. The head is provided with a wire hole connected to the feed hole. The wire outlet of the head is provided with an eye mold, which is provided with a forming hole coaxial with the wire hole. The conductor is sequentially passed through the wire hole and the forming hole. The extruder body squeezes the insulating glue into the wire hole and covers the conductor. When the conductor passes through the forming hole, the forming hole can form the insulating layer on the outside of the conductor so that the insulating layer has a set outer diameter.

[0003] During long-term use, the hole wall of the forming hole is prone to adhere to partially hardened insulating glue, thereby affecting the forming effect of the cable. In the prior art, the eye mold is generally threadedly connected to the threaded hole of the machine head so that the eye mold can be removed for cleaning. However, since the threaded hole is connected to the wire hole, it is easy for the insulating glue to adhere to the thread of the threaded hole, thereby affecting the disassembly and assembly of the eye mold. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a machine head, which is simpler and more convenient to operate when the eye mold needs to be disassembled and assembled, and saves time and effort.

[0005] The utility model also provides a cable extruder with the machine head.

[0006] The machine head according to the embodiment of the first aspect of the utility model includes a main body, an eye mold and a clamping piece, the main body is provided with a connected feed hole and a wire passing hole, the main body forms a wire input end and a wire output end at both ends of the extension direction of the wire passing hole, the end face of the wire output end is provided with a slot, the eye mold is detachably inserted in the slot, the eye mold is provided with a forming hole, the forming hole is connected to the wire passing hole and is coaxial, the clamping piece is detachably provided on the main body, and abuts against the end of the eye mold away from the wire input end.

[0007] The head according to the embodiment of the utility model has at least the following beneficial effects:

[0008] The wire passes through the wire hole of the main body, and then passes through the forming hole of the eye mold. The extruder body squeezes the insulating glue into the wire hole through the feed hole and covers the outside of the wire. When the wire passes through the forming hole, the forming hole can form the insulating layer outside the wire. According to the machine head of the embodiment of the utility model, when the eye mold needs to be removed for cleaning, the clamping piece is removed, and then the eye mold is taken out of the slot. After cleaning, the eye mold is inserted into the slot, and then the clamping piece is installed. The clamping piece abuts against the end of the eye mold away from the inlet end, so that the eye mold can be kept in the state of being inserted in the slot, thereby realizing the installation of the eye mold. Compared with the prior art in which the eye mold is connected by threads, the utility model does not have the problem of insulating glue adhering to the threads of the threaded hole, which makes it difficult to disassemble and assemble the eye mold. When disassembling and assembling the eye mold, the operation is simpler and more convenient, and it saves time and effort.

[0009] According to some embodiments of the utility model, the end face of the outlet end is provided with a connecting groove surrounding the slot, the side wall of the connecting groove is provided with a first thread, the clamping piece includes an annular sleeve and a clamping ring, the annular sleeve is provided with a second thread, and the side wall of the connecting groove is connected to the mating thread of the second thread and the first thread, the clamping ring is provided on the annular sleeve and extends along the circumference of the annular sleeve, and the clamping ring abuts against the end of the eye mold away from the inlet end.

[0010] According to some embodiments of the utility model, the main body portion includes an outer mold and an inner mold, the outer mold is provided with a mounting groove and a first hole, the first hole is connected to the forming hole, the surface of the mounting groove close to the outlet end forms a first enclosing surface, the inner mold is detachably installed in the mounting groove, the inner mold is provided with a second hole, the second hole is connected to the first hole to form the wire passing hole, and the surface of the inner mold close to the outlet end forms a second enclosing surface, wherein the first enclosing surface and the second enclosing surface enclose a feed cavity, and the feed hole and the first hole are both connected to the feed cavity.

[0011] According to some embodiments of the present invention, the first enclosing surface and the second enclosing surface are both configured as conical surfaces, and the diameter of the first enclosing surface gradually decreases in a direction approaching the outlet end, and the diameter of the second enclosing surface gradually decreases in a direction approaching the outlet end.

[0012] According to some embodiments of the utility model, the outer mold is provided with an annular material channel surrounding the inner mold, the feed hole is connected to the annular material channel, the annular material channel is provided with a plurality of connecting holes along the circumferential direction, and the plurality of connecting holes are all connected to the feed cavity.

[0013] According to some embodiments of the present invention, the aperture of the forming hole is larger than the aperture of the second hole, and the aperture of the first hole is larger than the aperture of the forming hole.

[0014] According to some embodiments of the utility model, a transition hole coaxial with the forming hole is provided at one end of the eye mold close to the first hole, the transition hole connects the forming hole and the first hole, the aperture of the transition hole gradually decreases in the direction close to the forming hole, and the aperture of the end of the transition hole close to the forming hole is equal to the aperture of the forming hole, and the aperture of the end of the transition hole close to the first hole is equal to the aperture of the first hole.

[0015] According to some embodiments of the utility model, a cleaning hole is provided on the end face of the wire inlet end, the cleaning hole is connected to and coaxial with the wire passing hole, the aperture of the cleaning hole gradually decreases in the direction approaching the wire passing hole, the main body is provided with an annular air channel surrounding the cleaning hole and an air inlet hole connected to the annular air channel, and the annular air channel is circumferentially provided with a plurality of blowing holes connected to the cleaning hole.

[0016] According to some embodiments of the utility model, the blowing direction of the blowing hole extends obliquely in a direction away from the wire passing hole and close to the axial center line of the cleaning hole.

[0017] The cable extruder according to the second embodiment of the utility model comprises the head described in the first embodiment.

[0018] The cable extruder according to the embodiment of the utility model has at least the following beneficial effects:

[0019] Compared with the prior art in which the eye mold is connected by threads, the machine head adopting the embodiment of the first aspect of the utility model does not have the problem of insulating glue adhering to the threads of the threaded hole and causing difficulty in disassembling the eye mold. When disassembling and assembling the eye mold, the operation is simpler and more convenient, saving time and effort.

[0020] Additional aspects and advantages of the present invention will be partially given in the following description, and some of the additional aspects and advantages will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 It is a schematic diagram of the overall structure of the machine head of the utility model;

[0023] Figure 2 for Figure 1 A cross-sectional view of

[0024] Figure 3 It is a working schematic diagram of the machine head of the utility model.

[0025] Figure Number:

[0026] Main body 100; wire hole 101; wire inlet 102; wire outlet 103; slot 104; connection slot 105; outer mold 106; mounting slot 107; first hole 108; inner mold 109; second hole 110; material delivery cavity 111; annular material channel 112; connecting hole 113; cleaning hole 114; annular air channel 115; air inlet hole 116; air blowing hole 117;

[0027] Eye mold 200; forming hole 201; transition hole 202;

[0028] Pressing member 300; annular sleeve 301; pressing ring 302;

[0029] Conducting wire 400 ; insulating layer 401 . DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present utility model, "a plurality" refers to two or more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Reference below Figures 1 to 3 The present invention describes a machine head and a cable extruder according to embodiments of the present invention.

[0035] According to the first embodiment of the utility model, the head Figures 1 to 3 As shown, it includes a main body 100 , an eye mold 200 and a pressing member 300 .

[0036] The main body 100 is provided with a feed hole and a wire hole 101 which are connected. After the head is installed on the extruder body, the feed hole is connected with the inner cavity of the extruder body. The wire hole 101 is used for the wire 400 to pass through. The main body 100 forms an inlet terminal 102 and an outlet terminal 103 at both ends of the extension direction of the wire hole 101. The wire 400 enters the main body 100 from the inlet terminal 102 and moves out from the outlet terminal 103. The end face of the outlet terminal 103 is provided with a slot 104, and the slot 104 can be cylindrical or square.

[0037] The outer contour of the eye mold 200 corresponds to the slot 104 and can be set to a cylindrical or square shape. The eye mold 200 can be detachably inserted into the slot 104, that is, the eye mold 200 can be inserted into the slot 104 and can be taken out from the slot 104. The eye mold 200 is provided with a forming hole 201, which is connected to the wire hole 101 and is coaxial.

[0038] The clamping piece 300 is detachably disposed on the main body 100 and abuts against the end of the eye mold 200 away from the inlet end 102. The clamping piece 300 can apply a force to the eye mold 200, and the direction of the force is from the outlet end 103 to the inlet end 102, thereby enabling the eye mold 200 to remain in a state of being inserted in the slot 104, thereby achieving the installation of the eye mold 200.

[0039] In the present invention, the wire 400 passes through the wire hole 101 of the main body 100, and then passes through the forming hole 201 of the eye mold 200. The extruder body squeezes the insulating glue into the wire hole 101 through the feed hole and covers the outside of the wire 400. When the wire 400 passes through the forming hole 201, the forming hole 201 can form the insulating layer 401 outside the wire 400. According to the head of the embodiment of the present invention, when the eye mold 200 needs to be removed for cleaning, the clamping member 300 is removed, and then the eye mold 200 is taken out of the slot 104. After cleaning, the eye mold 200 is inserted into the slot 104, and then the clamping member 300 is installed. The clamping member 300 abuts against the end of the eye mold 200 away from the inlet end 102, so that the eye mold 200 can be kept in the state of being inserted in the slot 104, thereby realizing the installation of the eye mold 200.

[0040] Compared with the prior art in which the eye mold 200 is connected by threads, the utility model does not have the problem of insulating glue adhering to the threads of the threaded hole and causing difficulty in disassembling the eye mold 200. When disassembling and assembling the eye mold 200, the operation is simpler and more convenient, saving time and effort.

[0041] In some embodiments of the present invention, Figures 1 to 3As shown, the end face of the outlet terminal 103 is provided with a connecting groove 105 surrounding the slot 104, and the side wall of the connecting groove 105 is provided with a first thread. The clamping member 300 includes an annular sleeve 301 and a clamping ring 302. The annular sleeve 301 is provided with a second thread, and the side wall of the connecting groove 105 is connected to the thread by the second thread and the first thread. The clamping ring 302 is arranged on the annular sleeve 301 and extends along the circumference of the annular sleeve 301. The clamping ring 302 abuts against the end of the eye mold 200 away from the inlet terminal 102.

[0042] For example, the side wall of the connecting groove 105 away from the eye mold 200 may be provided with a first thread, that is, an internal thread, and the outer side wall of the annular sleeve 301 may be provided with a second thread, that is, an external thread. The end face of the eye mold 200 away from the inlet end 102 may be provided with an annular sink. After the eye mold 200 is inserted into the slot 104, the annular sleeve 301 is rotated so that the annular sleeve 301 is threadedly connected to the side wall of the connecting groove 105 through the second thread and the first thread. In this case, the clamping ring 302 just abuts against the end face of the annular sink, thereby locking the eye mold 200. In this embodiment, such a configuration not only has a simple structure, but also is convenient for installing and disassembling the clamping member 300, and the clamping ring 302 can abut against various positions of the eye mold 200 in the circumferential direction, and the effect of locking the eye mold 200 is better.

[0043] It should be noted that the clamping member 300 may also be other structures, such as a pressure plate structure, and the clamping member 300 may also be detachably connected to the main body 100 in other ways, for example, connected to the main body 100 by fasteners, which will not be repeated here.

[0044] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the main body 100 includes an outer mold 106 and an inner mold 109. The outer mold 106 is provided with a mounting groove 107 and a first hole 108. The first hole 108 is connected to the forming hole 201. The surface of the mounting groove 107 close to the outlet terminal 103 forms a first enclosing surface. The inner mold 109 is detachably installed in the mounting groove 107. The inner mold 109 is provided with a second hole 110. The second hole 110 is connected to the first hole 108 to form a wire hole 101. The surface of the inner mold 109 close to the outlet terminal 103 forms a second enclosing surface, wherein the first enclosing surface and the second enclosing surface enclose a feed cavity 111, and the feed hole and the first hole 108 are both connected to the feed cavity 111.

[0045] In this embodiment, after the wire 400 passes through the second hole 110 and enters the first hole 108, the insulating glue in the first hole 108 can be coated on the outside of the wire 400. When the wire 400 passes through the forming hole 201 with the insulating glue, an insulating layer 401 can be formed, and the forming effect is good. The inner mold 109 is detachable, and the first enclosing surface and the second enclosing surface are enclosed to form a feed cavity 111, so that the processing of the feed cavity 111 is more convenient, and it is convenient to clean the feed cavity 111 and the first hole 108. In addition, the formed feed cavity 111 surrounds the second hole 110, so that the insulating glue can enter the first hole 108 more evenly, so that the cable molding effect is better.

[0046] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the first enclosing surface and the second enclosing surface are both configured as conical surfaces, the axis line of the first enclosing surface and the axis line of the second enclosing surface can both coincide with the axis line of the wire hole 101, and the diameter of the first enclosing surface gradually decreases in the direction approaching the wire outlet end 103, and the diameter of the second enclosing surface gradually decreases in the direction approaching the wire outlet end 103.

[0047] In this way, the flow direction of the insulating glue in the delivery cavity 111 is toward the first hole 108, which not only enables the insulating glue in the delivery cavity 111 to flow more smoothly into the first hole 108, thereby achieving a better molding effect, but also reduces the insulating glue in the delivery cavity 111 from flowing into the second hole 110 and hindering the movement of the wire 400.

[0048] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the outer mold 106 is provided with an annular material channel 112 surrounding the inner mold 109 , the feed hole is connected to the annular material channel 112 , and the annular material channel 112 is provided with a plurality of connecting holes 113 along the circumferential direction, and the plurality of connecting holes 113 are all connected to the feed cavity 111 .

[0049] In this embodiment, the insulating glue in the feed hole first enters the annular material channel 112, and then enters the feed cavity 111 through the multiple connecting holes 113. Since the annular material channel 112 surrounds the inner mold 109, and the multiple connecting holes 113 are arranged circumferentially along the annular material channel 112, the insulating glue can enter the feed cavity 111 at multiple positions on the circumference of the feed cavity 111. Compared with the feed hole directly connected to the feed cavity 111, the feeding is more uniform, and the cable molding effect is better.

[0050] In some embodiments of the present invention, Figure 2 and Figure 3As shown, the aperture of the forming hole 201 is larger than the aperture of the second hole 110, and the aperture of the first hole 108 is larger than the aperture of the forming hole 201. For example, the aperture of the second hole 110 can be adapted to the diameter of the wire 400, the aperture of the forming hole 201 can be adapted to the outer diameter of the insulating layer 401, and the aperture of the first hole 108 is larger than the aperture of the forming hole 201. In this way, not only can the insulating glue in the feeding cavity 111 be further prevented from flowing into the second hole 110 and hindering the movement of the wire 400, but also the forming effect of the cable is better.

[0051] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the end of the eye mold 200 close to the first hole 108 is provided with a transition hole 202 coaxial with the forming hole 201, the transition hole 202 connects the forming hole 201 and the first hole 108, the aperture of the transition hole 202 gradually decreases in the direction close to the forming hole 201, and the aperture of the end of the transition hole 202 close to the forming hole 201 is equal to the aperture of the forming hole 201, and the aperture of the end of the transition hole 202 close to the first hole 108 is equal to the aperture of the first hole 108. In this embodiment, the transition hole 202 is provided to achieve a better forming effect of the cable.

[0052] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, a cleaning hole 114 is provided on the end face of the inlet end 102, the cleaning hole 114 is connected and coaxial with the wire hole 101, the aperture of the cleaning hole 114 gradually decreases in the direction close to the wire hole 101, the main body 100 is provided with an annular airway 115 surrounding the cleaning hole 114 and an air inlet 116 connected to the annular airway 115, and the annular airway 115 is provided with a plurality of blowing holes 117 connected to the cleaning hole 114 along the circumferential direction. Before the wire 400 enters the wire hole 101, dust and metal shavings may adhere to it, and thus, when passing through the wire hole 101, it is easy to have excessive friction and hinder the movement of the wire 400, and it will also affect the bonding effect between the insulating layer 401 and the wire 400.

[0053] In this embodiment, a cleaning hole 114 is provided on the end surface of the inlet end 102, and the aperture of the cleaning hole 114 gradually decreases in the direction close to the wire hole 101. The main body 100 is provided with an annular air channel 115 surrounding the cleaning hole 114, and the annular air channel 115 is provided with a plurality of blowing holes 117 connected to the cleaning hole 114 along the circumferential direction. The air inlet 116 can be connected to an air supply device such as an air compressor, and the air supply device supplies air into the annular air channel 115 through the air inlet 116, and then blows air toward the wire 400 through the plurality of blowing holes 117, thereby effectively removing dust and metal shavings on the wire 400, thereby not only making the wire 400 move more smoothly, but also making the bonding effect between the insulating layer 401 and the wire 400 better.

[0054] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the blowing direction of the air hole 117 extends obliquely in the direction away from the wire hole 101 and close to the axis of the cleaning hole 114. The air blown out of the air hole 117 is directed toward the wire 400 while also facing away from the wire hole 101, thereby making it easier to blow dust and metal shavings out of the cleaning hole 114, thereby achieving a better cleaning effect on the wire 400.

[0055] According to the second embodiment of the utility model, the cable extruder includes the head of the first embodiment. For example, the cable extruder may also include an extruder body, the extruder body is provided with an inner cavity, the inner cavity is provided with a spiral rod, the head is provided on the extruder body, the feed hole is connected with the inner cavity of the extruder body, the insulating material is added into the inner cavity, the insulating material is heated and melted to form an insulating glue, and the spiral rod is rotated, and the spiral blades on the spiral rod can squeeze the insulating glue in the inner cavity of the extruder body into the feed hole, and then squeezed into the wire hole 101.

[0056] According to the cable extruder of the embodiment of the utility model, by adopting the machine head of the embodiment of the first aspect of the utility model, compared with the eye mold 200 in the prior art connected by threads, the utility model does not have the problem of insulating glue adhering to the threads of the threaded hole and causing difficulty in disassembling the eye mold 200. When disassembling and assembling the eye mold 200, the operation is simpler and more convenient, saving time and effort.

[0057] It should be noted that, since the cable extruder can adopt all the technical solutions of the head of the above-mentioned first aspect embodiment, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned first aspect embodiment, and these additional beneficial effects will not be repeated here.

[0058] It is understandable that other structures and operations of the cable extruder according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0059] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A machine head, characterized in that: include: The main body is provided with a feed hole and a wire hole connected to each other, and the main body is provided with a wire inlet end and a wire outlet end at both ends of the wire hole in the extension direction, and a slot is provided on the end surface of the wire outlet end; An eye mold is detachably inserted into the slot, the eye mold is provided with a forming hole, and the forming hole is connected to the wire hole and is coaxial; The pressing piece is detachably arranged on the main body and abuts against an end of the eye mold away from the wire inlet end.

2. The head according to claim 1, characterized in that: The end surface of the outlet terminal is provided with a connecting groove surrounding the slot, the side wall of the connecting groove is provided with a first thread, and the pressing member includes: An annular sleeve, provided with a second thread, and connected to the side wall of the connecting groove through the mating thread of the second thread and the first thread; A clamping ring is arranged on the annular sleeve and extends along the circumference of the annular sleeve. The clamping ring abuts against an end of the eye mold away from the wire inlet end.

3. The handpiece according to claim 1 or 2, characterized in that: The main body comprises: The outer mold is provided with a mounting groove and a first hole, wherein the first hole is connected to the forming hole, and a surface of the mounting groove close to the outlet terminal forms a first enclosing surface; An inner mold is detachably mounted in the mounting groove, the inner mold is provided with a second hole, the second hole is butted with the first hole to form the wire hole, and the surface of the inner mold close to the wire outlet forms a second enclosing surface; The first enclosed surface and the second enclosed surface enclose a material delivery cavity, and the feed hole and the first hole are both connected to the material delivery cavity.

4. The head according to claim 3, characterized in that: The first enclosing surface and the second enclosing surface are both configured as conical surfaces, and the diameter of the first enclosing surface gradually decreases in a direction approaching the outlet end, and the diameter of the second enclosing surface gradually decreases in a direction approaching the outlet end.

5. The handpiece according to claim 3, characterized in that: The outer mold is provided with an annular material channel surrounding the inner mold, the feed hole is connected to the annular material channel, the annular material channel is provided with a plurality of connecting holes along the circumferential direction, and the plurality of connecting holes are all connected to the feed cavity.

6. The handpiece according to claim 3, characterized in that: The aperture of the forming hole is larger than that of the second hole, and the aperture of the first hole is larger than that of the forming hole.

7. The handpiece according to claim 6, characterized in that: A transition hole coaxial with the forming hole is provided at one end of the eye mold close to the first hole, the transition hole connects the forming hole and the first hole, the aperture of the transition hole gradually decreases along the direction close to the forming hole, and the aperture of the end of the transition hole close to the forming hole is equal to the aperture of the forming hole, and the aperture of the end of the transition hole close to the first hole is equal to the aperture of the first hole.

8. The handpiece according to claim 1 or 2, characterized in that: The end face of the inlet end is provided with a cleaning hole, the cleaning hole is connected to the wire passing hole and is coaxial, the aperture of the cleaning hole gradually decreases in the direction approaching the wire passing hole, the main body is provided with an annular air channel surrounding the cleaning hole and an air inlet hole connected to the annular air channel, and the annular air channel is circumferentially provided with a plurality of blowing holes connected to the cleaning hole.

9. The handpiece according to claim 8, characterized in that: The blowing direction of the blowing hole extends obliquely along a direction away from the wire passing hole and close to the axial center line of the cleaning hole.

10. A cable extruder, characterized in that: Comprising a head as claimed in any one of claims 1 to 9.

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