CN112297370A

CN112297370A - Penetrate a structure and injection molding machine

Info

Publication number: CN112297370A
Application number: CN202011114825.8A
Authority: CN
Inventors: 黎秀郁; 莫玉麟; 赵永政; 宋佳庆; 孟萌
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-02-02

Abstract

The invention provides an injection platform structure and an injection molding machine, wherein the injection platform structure comprises: the glue melting driving part is used for being connected with the glue melting screw rod so as to drive the glue melting screw rod to rotate; the glue injection driving part and the glue melting driving part are arranged at intervals along a preset direction, and the glue injection driving part comprises a screw rod and a nut matched with the screw rod; when the screw rod rotates, the screw rod drives the nut to move along a preset direction; the movable part is connected with the nut; a guide member connected to the movable member to guide the movable member; and one end of the pressure sensor is connected with the melt adhesive driving part, and the other end of the pressure sensor is connected with the movable part, so that the movable part drives the pressure sensor and the melt adhesive driving part to move along a preset direction, and the pressure between the melt adhesive driving part and the movable part is detected through the pressure sensor. The injection platform structure solves the problem that the injection platform structure applied to the injection molding machine in the prior art cannot accurately detect the injection pressure.

Description

Penetrate a structure and injection molding machine

Technical Field

The invention relates to the field of injection molding equipment, in particular to an injection platform structure and an injection molding machine.

Background

The injection platform structure of the injection molding machine is used for driving the glue melting screw to move, so that the melted materials are extruded into the mold.

Along with the improvement of precision requirements of people on plastic products, the control precision of injection molding pressure is higher and higher in the injection molding process, and in order to improve the control precision of the injection molding pressure, a driving structure consisting of a screw rod and a nut is generally adopted in an injection platform structure.

For example, the invention patent application with publication number CN106393613A discloses an injection mechanism, which drives a pressure sensor to move through an injection lead screw, and further drives a melt bearing seat and a melt rotating shaft mounted thereon to move.

Although the glue injection pressure of the injection platform structure adopting the structure can be directly transmitted to the pressure sensor, the detection of the glue injection pressure is still not accurate enough in actual use, so that the precision of an injection molding product is limited.

Disclosure of Invention

The invention mainly aims to provide an injection platform structure and an injection molding machine, and aims to solve the problem that the injection platform structure applied to the injection molding machine in the prior art cannot accurately detect the injection pressure.

In order to achieve the above object, according to one aspect of the present invention, there is provided a stage structure comprising: the melt adhesive driving part is used for being connected with the melt adhesive screw rod to drive the melt adhesive screw rod to rotate so that the melt adhesive screw rod pushes the plastic material to the end part of the plastic material; the glue injection driving part and the glue melting driving part are arranged at intervals along a preset direction, and the glue injection driving part comprises a screw rod and a nut matched with the screw rod; when the screw rod rotates, the screw rod drives the nut to move along a preset direction; the movable part is connected with the nut so as to drive the movable part to move along a preset direction through the nut; a guide member connected to the movable member to guide the movable member; and one end of the pressure sensor is connected with the melt adhesive driving part, and the other end of the pressure sensor is connected with the movable part, so that the movable part drives the pressure sensor and the melt adhesive driving part to move along a preset direction, and the pressure between the melt adhesive driving part and the movable part is detected through the pressure sensor.

Furthermore, a guide hole is formed in the movable part, the guide part is a guide shaft, and the guide shaft is arranged in the guide hole in a penetrating mode.

Furthermore, the movable part comprises a body part and a guide sleeve connected with the body part, and the guide hole is an inner hole of the guide sleeve; and/or, the movable part is provided with a through hole, and the screw rod is arranged in the through hole in a penetrating way; the guiding holes and the guiding shafts are multiple, the guiding holes are arranged along the circumferential interval of the through hole, and the guiding shafts penetrate through the guiding holes in a one-to-one correspondence mode.

Further, the pressure sensor includes: the inner ring is connected with the movable part: the outer loop encircles the inner ring setting, and the outer loop is connected with the melten gel drive division: and the pressure detection piece is arranged between the inner ring and the outer ring and connected with the inner ring and the outer ring so as to detect the force between the inner ring and the outer ring.

Furthermore, the pressure sensor is connected with the melt adhesive driving part through a first connecting piece, the first connecting piece is provided with a pressing end used for pressing the pressure sensor, and the pressure sensor is arranged between the melt adhesive driving part and the pressing end; wherein, the one side that is close to pressure sensor of movable part is equipped with dodges the hole, compresses tightly the end and is located dodging downtheholely.

Further, the melt adhesive driving part includes: the first mounting seat is connected with the pressure sensor and moves along with the pressure sensor; the rotating shaft is rotatably arranged on the first mounting seat around the axis of the rotating shaft and is used for being connected with the glue melting screw rod so as to drive the glue melting screw rod to rotate; the first rotary driving component is connected with the rotating shaft to drive the rotating shaft to rotate.

Further, the first rotary drive assembly comprises: a first motor; the first driving belt wheel is connected with an output shaft of the first motor; the first driven belt wheel is connected with the rotating shaft; the first driving belt is connected with the first driven belt wheel, so that when the first motor drives the first driving belt wheel to rotate, the first driven belt wheel is driven to rotate through the first driving belt; the first mounting seat is provided with a motor fixing part, and the first motor is connected with the motor fixing part.

Furthermore, the glue melting driving part comprises a first bearing, the first bearing is installed between the first installation seat and the rotating shaft, and the first bearing is an angular contact bearing.

Furthermore, the glue injection driving part comprises a second rotary driving assembly, and the second rotary driving assembly is connected with the screw rod to drive the screw rod to rotate; and the controller is connected with the pressure sensor and the second rotary driving component and controls the second rotary driving component to work according to the detection result of the pressure sensor.

According to another aspect of the present invention, there is provided an injection molding machine, wherein the injection molding machine comprises the injection stage structure described above.

The platform structure of penetrating of the technical scheme of the invention comprises: the melt adhesive driving part is used for being connected with the melt adhesive screw rod to drive the melt adhesive screw rod to rotate so that the melt adhesive screw rod pushes the plastic material to the end part of the plastic material; the glue injection driving part and the glue melting driving part are arranged at intervals along a preset direction, and the glue injection driving part comprises a screw rod and a nut matched with the screw rod; when the screw rod rotates, the screw rod drives the nut to move along a preset direction; the movable part is connected with the nut so as to drive the movable part to move along a preset direction through the nut; a guide member connected to the movable member to guide the movable member; and one end of the pressure sensor is connected with the melt adhesive driving part, and the other end of the pressure sensor is connected with the movable part, so that the movable part drives the pressure sensor and the melt adhesive driving part to move along a preset direction, and the pressure between the melt adhesive driving part and the movable part is detected through the pressure sensor. Through adopting this kind of structural design, a part moment of torsion that produces when the lead screw is rotatory can transmit for the movable part through the nut, then this part moment of torsion can be born by the guide part, and can not transmit for pressure sensor, consequently, can guarantee that the numerical value that pressure sensor finally detected is the pressure between melten gel drive part and the movable part promptly, also be the pressure of applying on the plastic material when penetrating the glue, avoid the lead screw moment of torsion to measuring result's interference, be favorable to penetrating to glue the pressure and measure more accurately, the inaccurate problem of detection of penetrating a platform structure to penetrating glue pressure among the prior art has been solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic diagram of a first perspective of an embodiment of a stage structure according to the present invention;

FIG. 2 shows a schematic structural diagram of a second viewing angle of an embodiment of a stage structure according to the present invention;

FIG. 3 shows a schematic cross-sectional structural view along line A-A of the embodiment of the stage structure of FIG. 3;

FIG. 4 shows a schematic structural view of the movable part of an embodiment of the shooting table structure according to the present invention;

fig. 5 shows a schematic structural view of a first mount of an embodiment of a shooting table structure according to the present invention.

Wherein the figures include the following reference numerals:

1. a melt adhesive driving section; 11. a first mounting seat; 111. a motor fixing part; 12. a rotating shaft; 13. a first rotary drive assembly; 131. a first motor; 132. a first driving pulley; 133. a first driven pulley; 134. a first drive belt; 14. a first bearing; 2. a glue injection driving part; 21. a screw rod; 22. a nut; 23. a second rotary drive assembly; 231. a second motor; 233. a second driven pulley; 234. a second belt; 24. a second mounting seat; 25. a second bearing; 3. a movable part; 31. a guide hole; 32. a body portion; 33. a guide sleeve; 34. a through hole; 35. a reinforcing portion; 36. avoiding holes; 4. a guide member; 5. a pressure sensor.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The applicant finds that the reason that the existing injection table structure of the injection molding machine is inaccurate in injection pressure detection is that a screw rod for injection can transmit a part of torque to a pressure sensor through a nut during working, so that interference is brought to the working of the pressure sensor, the working precision of the pressure sensor is further influenced, and the injection pressure measurement is inaccurate.

Referring to fig. 1 to 5, the present invention provides a stage structure, including: the melting glue driving part 1 is used for being connected with the melting glue screw to drive the melting glue screw to rotate, so that the melting glue screw pushes the plastic material to the end part of the melting glue screw; the glue injection driving part 2 and the glue melting driving part 1 are arranged at intervals along a preset direction, and the glue injection driving part comprises a screw rod 21 and a nut 22 matched with the screw rod 21; when the screw 21 rotates, the screw 21 drives the nut 22 to move along a preset direction; the movable part 3, the movable part 3 is connected with the nut 22, so as to drive the movable part 3 to move along the preset direction through the nut 22; a guide member 4 connected to the movable member 3 to guide the movable member 3; pressure sensor 5, pressure sensor 5's one end and melten gel drive division 1 are connected, and pressure sensor 5's the other end is connected with movable part 3 to make movable part 3 drive pressure sensor 5 and melten gel drive division 1 along the motion of predetermineeing the direction, and detect the pressure between melten gel drive division 1 and the movable part 3 through pressure sensor 5.

During specific work, the glue melting driving part 1 drives the glue melting screw to rotate, the glue melting screw can push plastic materials (solid or melt or mixture of solid and melt) to move towards the end part of the glue melting screw, and the plastic materials are melted under the friction extrusion action, the outer barrel heating action and the like in the moving process and finally concentrated at the end part of the glue melting screw. Then the screw rod 21 of the glue injection driving part rotates to drive the nut 22 to move along the preset direction, so that the movable part 3 is driven to move along the guide part 4, the pressure sensor 5 is extruded, the pressure is transmitted to the glue melting driving part 1 through the pressure sensor 5, and the glue melting driving part 1 and the glue melting screw rod push the melted plastic materials to enter the die.

It should be noted that the preset direction is a bidirectional direction, that is, the preset direction includes a direction in which the glue driving part 1 points to the glue injection driving part 2, and also includes a direction in which the glue injection driving part 2 points to the glue injection driving part 1. The nut 22 is connected with the movable part 3, the pressure sensor 5 and the melt adhesive driving part 1 in sequence, and relative movement does not occur among the four parts.

The inventive shooting table structure comprises: the melting glue driving part 1 is used for being connected with the melting glue screw to drive the melting glue screw to rotate, so that the melting glue screw pushes the plastic material to the end part of the melting glue screw; the glue injection driving part 2 and the glue melting driving part 1 are arranged at intervals along a preset direction, and the glue injection driving part comprises a screw rod 21 and a nut 22 matched with the screw rod 21; when the screw 21 rotates, the screw 21 drives the nut 22 to move along a preset direction; the movable part 3, the movable part 3 is connected with the nut 22, so as to drive the movable part 3 to move along the preset direction through the nut 22; a guide member 4 connected to the movable member 3 to guide the movable member 3; pressure sensor 5, pressure sensor 5's one end and melten gel drive division 1 are connected, and pressure sensor 5's the other end is connected with movable part 3 to make movable part 3 drive pressure sensor 5 and melten gel drive division 1 along the motion of predetermineeing the direction, and detect the pressure between melten gel drive division 1 and the movable part 3 through pressure sensor 5. Through adopting this kind of structural design, a part of moment of torsion that produces when the lead screw 21 is rotatory can transmit for movable part 3 through nut 22, then this part of moment of torsion can be born by guide part 4, and can not transmit for pressure sensor 5, therefore, can guarantee that the numerical value that pressure sensor 5 finally detected is the pressure between melten gel drive part 1 and movable part 3 promptly, the pressure of applying to the plastic material when also shooting glue, avoid the interference of lead screw moment of torsion to the measuring result, be favorable to shooing glue pressure and measure more accurately, the inaccurate problem of detection of shooting platform structure to shooting glue pressure among the prior art has been solved.

The guide member 4 is for suppressing rotation of the movable member 3 about the axial direction of the screw shaft 21.

In addition, the movable part 3 can also play a role in separating the pressure sensor 5 from the screw rod 21, so that the heat transfer from the screw rod 21 to the pressure sensor 5 is effectively reduced, and the influence of heat on the work of the pressure sensor 5 is reduced.

In this embodiment, the movable member 3 is provided with a guide hole 31, and the guide member 4 is a guide shaft inserted into the guide hole 31.

Of course, the guiding component 4 may also be other structures, such as a structure composed of a guide rail and a sliding block, as long as the guiding function and the rotation prevention of the movable component 3 are achieved.

In order to ensure the smoothness of the movement of the movable component 3 along the guide component 4, the movable component 3 comprises a body part 32 and a guide sleeve 33 connected with the body part 32, and the guide hole 31 is an inner hole of the guide sleeve 33; and/or, the movable part 3 is provided with a through hole 34, and the screw rod 21 is arranged in the through hole 34 in a penetrating way; the guide holes 31 and the guide shafts are both multiple, the guide holes 31 are arranged at intervals along the circumferential direction of the through hole 34, and the guide shafts penetrate through the guide holes 31 in a one-to-one correspondence mode.

The movable part 3 further comprises a reinforcing part 35, and the reinforcing part 35 connects two adjacent guide sleeves 33; in the present embodiment, the number of the reinforcing portions 35 is plural in order to reinforce the structure of the plurality of guide bushes 33.

Specifically, the pressure sensor 5 includes: inner ring, connected to the movable part 3: the outer loop encircles the inner ring setting, and the outer loop is connected with melten gel drive division 1: and the pressure detection piece is arranged between the inner ring and the outer ring and connected with the inner ring and the outer ring so as to detect the force between the inner ring and the outer ring.

According to different pressure detection principles, the pressure detection piece can be in various structures, for example, the pressure detection piece can be made of piezoelectric materials, and when the force between the inner ring and the outer ring changes, the pressure detection piece made of the piezoelectric materials generates different currents, so that pressure detection is realized; for another example, the pressure detecting member is made of a semiconductor material, and the pressure detecting member detects different pressures by using the piezoresistive effect of the pressure detecting member.

In order to avoid the influence of the connecting structure on the work of the pressure sensor 5, the pressure sensor 5 is connected with the melt adhesive driving part 1 through a first connecting piece, the first connecting piece is provided with a pressing end used for pressing the pressure sensor 5, and the pressure sensor 5 is arranged between the melt adhesive driving part 1 and the pressing end; wherein, the face of the movable part 3 close to the pressure sensor 5 is provided with an avoidance hole 36, and the compressing end is positioned in the avoidance hole 36.

The movable member 3 is connected to the nut 22 by a second connecting member, and specifically, the first connecting member and the second connecting member may have various structures, such as a screw, a bolt, and the like.

Specifically, the melt adhesive driving section 1 includes: a first mounting seat 11 connected with the pressure sensor 5 to move with the pressure sensor 5; the rotating shaft 12 is rotatably arranged on the first mounting seat 11 around the axis of the rotating shaft 12, and the rotating shaft 12 is used for being connected with the glue melting screw to drive the glue melting screw to rotate; the first rotation driving assembly 13 is connected to the shaft 12 to drive the shaft 12 to rotate.

The first rotary drive assembly 13 includes: a first motor 131; a first driving pulley 132 connected to an output shaft of the first motor 131; a first driven pulley 133 connected to the rotating shaft 12; a first transmission belt 134 connecting the first driving pulley 132 and the first driven pulley 133 to drive the first driven pulley 133 to rotate through the first transmission belt 134 when the first motor 131 drives the first driving pulley 132 to rotate; the first mounting seat 11 has a motor fixing portion 111, and the first motor 131 is connected to the motor fixing portion 111. Therefore, the influence of the tension of the first transmission belt 134 on the pressure sensor 5 can be avoided, and the accuracy of the pressure sensor 5 on the injection pressure detection is ensured. Preferably, the number of the motor fixing parts 111 is two, and the two motor fixing parts 111 are spaced apart from each other.

In order to ensure the smoothness of the rotation of the rotating shaft 12 and ensure that the rotating shaft can apply reliable thrust to the melting glue screw, the melting glue driving part 1 comprises a first bearing 14, the first bearing 14 is installed between the first installation seat 11 and the rotating shaft 12, and the first bearing is an angular contact bearing.

So as to apply a force to the rotary shaft 12 in a direction away from the pressure sensor 5 through the angular contact bearing.

Specifically, the glue injection driving part 2 comprises a second rotary driving assembly 23, and the second rotary driving assembly 23 is connected with the screw rod 21 to drive the screw rod 21 to rotate; and the controller is connected with the pressure sensor 5 and the second rotary driving assembly 23, and controls the second rotary driving assembly 23 to work according to the detection result of the pressure sensor 5.

Similarly, the second rotary driving assembly 23 may include a second motor 231, a second driving pulley, a second driven pulley 233 and a second transmission belt 234, wherein the second motor 231 drives the second transmission belt 234 to rotate through the second driving pulley, so as to drive the second driven pulley 233 to rotate, and the second driven pulley 233 drives the lead screw 21 to rotate.

In addition, the glue injection driving part 2 further comprises a second mounting seat 24 and a second bearing 25, the screw 21 is mounted on the second mounting seat 24 through the second bearing 25, and preferably, the second bearing 25 is an angular contact bearing.

In addition, the invention also provides an injection molding machine which comprises the injection platform structure.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A shooting table structure, comprising:

the melting glue driving part (1) is used for being connected with a melting glue screw to drive the melting glue screw to rotate, so that the melting glue screw pushes the plastic material to the end part of the melting glue screw;

the glue injection driving part (2) and the glue melting driving part (1) are arranged at intervals along a preset direction, and the glue injection driving part comprises a screw rod (21) and a nut (22) matched with the screw rod (21); when the screw rod (21) rotates, the screw rod (21) drives the nut (22) to move along the preset direction;

the movable part (3) is connected with the nut (22) so as to drive the movable part (3) to move along the preset direction through the nut (22);

a guide member (4) connected to the movable member (3) to guide the movable member (3);

pressure sensor (5), the one end of pressure sensor (5) with melten gel drive division (1) is connected, the other end of pressure sensor (5) with movable part (3) are connected, so that movable part (3) drive pressure sensor (5) with melten gel drive division (1) is followed predetermine the direction motion, and pass through pressure sensor (5) detect melten gel drive division (1) with pressure between movable part (3).

2. The shooting table structure according to claim 1, characterized in that the movable part (3) is provided with a guide hole (31), and the guide part (4) is a guide shaft penetrating the guide hole (31).

3. The stage structure of claim 2,

the movable part (3) comprises a body part (32) and a guide sleeve (33) connected with the body part (32), and the guide hole (31) is an inner hole of the guide sleeve (33); and/or the presence of a gas in the gas,

a through hole (34) is formed in the movable part (3), and the screw rod (21) is arranged in the through hole (34) in a penetrating mode; the guide holes (31) and the guide shafts are multiple, the guide holes (31) are arranged along the circumferential direction of the through holes (34) at intervals, and the guide shafts penetrate through the guide holes (31) in a one-to-one correspondence mode.

4. Shooting table structure according to claim 1, characterized in that the pressure sensor (5) comprises:

an inner ring connected to the movable part (3):

the outer ring surrounds the inner ring, and is connected with the melt adhesive driving part (1):

and the pressure detection piece is arranged between the inner ring and the outer ring and is connected with the inner ring and the outer ring so as to detect the force between the inner ring and the outer ring.

5. The shooting table structure according to claim 1, wherein the pressure sensor (5) is connected with the melt adhesive driving part (1) through a first connecting member having a pressing end for pressing the pressure sensor (5), the pressure sensor (5) being disposed between the melt adhesive driving part (1) and the pressing end;

wherein, the movable part (3) be close to the one side of pressure sensor (5) is equipped with dodges hole (36), compress tightly the end and be located dodge hole (36) in.

6. The projection table structure according to any one of claims 1 to 5, wherein the glue driving part (1) comprises:

a first mounting seat (11) connected with the pressure sensor (5) to move with the pressure sensor (5);

the rotating shaft (12) is rotatably arranged on the first mounting seat (11) around the axis of the rotating shaft, and the rotating shaft (12) is used for being connected with the glue melting screw rod so as to drive the glue melting screw rod to rotate;

the first rotary driving component (13) is connected with the rotating shaft (12) to drive the rotating shaft (12) to rotate.

7. The stage structure according to claim 6, characterized in that said first rotary drive assembly (13) comprises:

a first motor (131);

a first driving pulley (132) connected to an output shaft of the first motor (131);

a first driven pulley (133) connected to the rotating shaft (12);

a first transmission belt (134) connecting the first driving pulley (132) and the first driven pulley (133) to drive the first driven pulley (133) to rotate through the first transmission belt (134) when the first motor (131) drives the first driving pulley (132) to rotate;

wherein the first mounting seat (11) is provided with a motor fixing part (111), and the first motor (131) is connected with the motor fixing part (111).

8. The stage structure of claim 6, wherein the glue melting driving part (1) comprises a first bearing (14), the first bearing (14) is installed between the first installation seat (11) and the rotating shaft (12), and the first bearing is an angular contact bearing.

9. The shooting table structure according to any one of claims 1 to 5, characterized in that the shooting glue driving part (2) comprises a second rotary driving component (23), the second rotary driving component (23) is connected with the screw rod (21) to drive the screw rod (21) to rotate;

and the controller is connected with the pressure sensor (5) and the second rotary driving component (23), and controls the second rotary driving component (23) to work according to the detection result of the pressure sensor (5).

10. An injection molding machine, characterized in that it comprises the shooting table structure of any one of claims 1 to 9.