Glue valve exhaust device and glue valve dispenser

Abstract

The application relates to a glue valve exhaust device and a glue valve dispensing machine. The glue valve exhaust device comprises a glue valve body, a first cavity arranged in the glue valve body, the first cavity being used for storing glue for dispensing standby; an exhaust port arranged on the side of the glue valve body and used as an exhaust outlet of the glue valve body; and an exhaust member, an exhaust end of the exhaust member being connected with the first cavity of the glue valve body and used for exhausting air bubbles in the first cavity of the glue valve body from the exhaust port; wherein when the glue valve body needs to exhaust air bubbles, the exhaust member moves to the exhaust port and exhausts the air bubbles in the glue valve body from the exhaust port through air pressure. According to the glue valve exhaust device and the glue valve dispensing machine provided by the application, the air bubbles in the glue valve can be completely exhausted, so that the quality of subsequent dispensing processes is stable and reliable.

Description

Technical Field

[0001] This application relates to the field of dispensing machine technology, and in particular to a glue valve exhaust device and a glue valve dispensing machine. Background Technology

[0002] In the dispensing process of adhesive valves in precision electronics manufacturing, a dust capture process is added to the front-end packaging stage to effectively protect precision components such as photosensitive devices from micro-dust ion contamination. Specifically, a specially formulated dust-resistant adhesive is precisely applied to the surface of the electronic components, forming an effective dust-resistant protective layer.

[0003] However, in actual production, when the dispensing valve is replaced, a certain amount of air remains inside the valve body and cannot be completely expelled. This trapped air mixes with the adhesive to form bubbles. The presence of these bubbles severely affects the dispensing quality, leading to dispensing defects such as uneven adhesive application and inconsistent adhesive layer thickness.

[0004] Therefore, before the dispensing operation is carried out, special venting measures must be taken to completely remove air bubbles from inside the dispensing valve to ensure the stable and reliable quality of the subsequent dispensing process. Utility Model Content

[0005] The purpose of this application is to provide a glue valve venting device and a glue valve dispensing machine. The glue valve venting device can completely remove air bubbles inside the glue valve to ensure the stable and reliable quality of subsequent dispensing processes.

[0006] In a first aspect, embodiments of this application provide a glue valve venting device, comprising: a glue valve body, including a first cavity disposed within the glue valve body, the first cavity being used to store glue for dispensing; a venting port disposed on the side of the glue valve body, serving as the venting outlet of the glue valve body; and a venting member, the venting end of the venting member being connected to the first cavity of the glue valve body, for discharging air bubbles in the first cavity of the glue valve body from the venting port; wherein, when the glue valve body needs to vent air bubbles, the venting member moves to the venting port and uses air pressure to discharge the air bubbles in the glue valve body through the venting port.

[0007] In one possible implementation, a glue collection cup is also included, which is disposed on the side of the glue valve body and located below the vent, for collecting the bubble glue discharged from the vent.

[0008] In one possible implementation, an exhaust drive motor is also included, which is connected to the exhaust component and is used to drive the exhaust component to exhaust gas.

[0009] In one possible implementation, when the exhaust drive motor drives the exhaust component to exhaust air, the exhaust drive motor drives the exhaust component to remain at the exhaust port for at least 5 seconds.

[0010] In one possible implementation, when the exhaust drive motor drives the exhaust component to exhaust air, the exhaust drive motor drives the exhaust component to stay at the exhaust port at least twice.

[0011] In one possible implementation, a fixing plate is also included for mounting the glue valve body.

[0012] In one possible implementation, a hose is also included, which is connected to the glue valve body and is used to deliver glue to the glue valve body.

[0013] In one possible implementation, an air supply unit is also included, which is connected to the hose to deliver the glue in the hose to the valve body by means of air supply.

[0014] In one possible implementation, an air pipe is provided between the air supply unit and the hose, and the air supply unit delivers air pressure to the hose through the air pipe.

[0015] Secondly, embodiments of this application provide a glue valve dispensing machine, including the aforementioned glue valve exhaust device.

[0016] According to the glue valve venting device provided in the embodiments of this application, by setting venting components and venting ports, air bubbles in the first cavity of the glue valve body can be vented in a targeted manner by using air pressure. This effectively solves the problems of unstable glue volume and irregular glue dot shape caused by the presence of air bubbles in the traditional glue dispensing process, and significantly improves the glue dispensing accuracy and product quality.

[0017] Furthermore, based on the aforementioned glue valve venting device, this application provides a dispensing machine that, by employing the aforementioned glue valve venting device, possesses all the technical effects of the aforementioned glue valve venting device. The glue valve dispensing machine including the glue valve venting device can be widely applied to fields requiring precision dispensing, such as electronics, automobiles, and medical devices. Its stable and reliable performance and easy-to-maintain structural features can meet the dispensing production needs in different scenarios and have high industrialization and promotion value. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In addition, in the drawings, the same parts use the same reference numerals, and the drawings are not drawn to scale.

[0019] Figure 1 This is a perspective view of the venting device for the glue valve provided in an embodiment of this application;

[0020] Figure 2 This diagram shows a schematic representation of the structure of the venting device for the glue valve provided in an embodiment of this application.

[0021] Figure 3 This is a partially enlarged view of the exhaust port provided in an embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Valve body; 11. First cavity;

[0024] 2. Exhaust port;

[0025] 3. Exhaust components;

[0026] 4. Glue collection cup;

[0027] 5. Exhaust drive motor;

[0028] 6. Fixing plate;

[0029] 7. Rubber hose;

[0030] 8. Gas supply unit;

[0031] 9. Trachea. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In the actual production process of glue valve dispensing, after changing the glue valve equipment, a certain amount of air remains inside the valve body and cannot be completely expelled. This trapped air mixes with the glue to form bubbles. The presence of these bubbles seriously affects the dispensing quality, leading to dispensing defects such as uneven glue application and inconsistent glue layer thickness. To avoid this phenomenon, this application provides a glue valve venting device and a glue valve dispensing machine. This glue valve venting device can completely expel the air bubbles inside the glue valve, ensuring stable and reliable quality in subsequent dispensing processes.

[0034] Specifically, such as Figures 1 to 3 As shown in the figure, this application provides a glue valve venting device, including a glue valve body 1, a vent 2, and a venting component 3. The glue valve body 1 includes a first cavity 11 disposed within the glue valve body 1, which is used to store glue for dispensing. The vent 2 is disposed on the side of the glue valve body 1 and serves as the vent outlet of the glue valve body 1. The venting end of the venting component 3 is connected to the first cavity 11 of the glue valve body 1 and is used to discharge air bubbles in the first cavity 11 of the glue valve body 1 from the vent 2. When the glue valve body 1 needs to vent air bubbles, the venting component 3 moves to the vent 2 and uses air pressure to discharge the air bubbles in the glue valve body 1 through the vent 2.

[0035] Specifically, the glue valve venting device provided in this application mainly consists of a glue valve body 1, a vent 2, and a venting component 3. The glue valve body 1 has a first cavity 11 internally, which serves as a storage space for glue, providing glue reserves during dispensing operations. The vent 2 is located on the side of the glue valve body 1, serving as a gas discharge channel for the entire glue valve body 1. The venting component 3 has a venting end connected to the first cavity 11 of the glue valve body 1, and its main function is to effectively discharge any air bubbles that may be generated within the first cavity 11 through the vent 2. In actual operation, when air bubbles need to be discharged from the glue valve body 1, the venting component 3 precisely moves to the vent 2 position, forcing the air bubbles inside the glue valve body 1 out through the vent 2 using air pressure, thereby ensuring the quality and stability of the dispensing operation. This design not only improves venting efficiency but also effectively prevents air bubbles from affecting dispensing accuracy.

[0036] Furthermore, the adhesive valve venting device in this embodiment is designed with ease of operation and optimized venting effect in mind. To achieve this, the venting component 3 is designed to be flexibly movable, allowing it to be quickly and accurately positioned at the vent port 2 when venting is required. This design enables operators to easily perform venting operations before dispensing, without complex adjustments or additional tools. Simultaneously, the movement mechanism of the venting component 3 can be manual or automatic, depending on specific application requirements and production efficiency considerations.

[0037] In the design of the automated exhaust component 3, sensors and control units can be integrated to achieve automated monitoring and control of the exhaust process. The sensors can detect the presence of air bubbles inside the valve body 1 and transmit the signal to the control unit. The control unit then directs the exhaust component 3 to automatically move to the exhaust port 2, initiating the exhaust process. This automated design not only improves production efficiency but also reduces human error and labor intensity.

[0038] In one possible implementation, such as Figure 1 Combination Figure 2 As shown, the glue valve venting device provided in this application embodiment also includes a glue collection cup 4. The glue collection cup 4 is disposed on the side of the glue valve body 1 and located below the vent 2, and is used to collect the bubble glue discharged from the vent 2.

[0039] In a specific example, the glue collection cup 4 is made of corrosion-resistant material and is securely mounted to the side of the glue valve body 1. Specifically, the opening of the collection cup is aligned with the area directly below the vent 2, maintaining an appropriate gap between them to ensure smooth venting. The main function of this structural design is to efficiently collect and store the glue mixture containing air bubbles discharged from the vent 2, preventing it from contaminating the working environment. The bottom of the collection cup has a removable structure for easy periodic cleaning and maintenance. Furthermore, the volume of the collection cup is calculated to meet the glue collection needs during continuous operation.

[0040] Furthermore, to further improve the efficiency and safety of the glue collection cup 4, the glue collection cup 4 in this embodiment is also equipped with a liquid level indicator. This indicator can monitor the glue level in the collection cup in real time. When the glue reaches a certain height, it will remind the operator to clean it up through visual or audible signals, thereby avoiding spillage and potential safety risks. To adapt to different working environments and the characteristics of the glue, the inner wall of the collection cup may be coated with a special anti-stick coating to reduce glue residue on the cup wall, ensure that the glue can flow smoothly into the collection cup, and facilitate subsequent cleaning.

[0041] In one possible implementation, such as Figure 1 Combination Figure 2 As shown, the venting device for the rubber valve provided in this embodiment of the application further includes an venting drive motor 5, which is connected to the venting component 3 and is used to drive the venting component 3 to vent.

[0042] In a specific example, the exhaust drive motor 5 is mechanically connected to the exhaust component 3, specifically, the motor's output shaft is connected to the exhaust component 3. When the device needs to perform an exhaust operation, the control system sends a start signal to the exhaust drive motor 5, and the motor immediately starts running, transmitting rotational power to the exhaust component 3 through a transmission mechanism. This design allows the exhaust component 3 to perform stable and reliable exhaust operations at a preset speed and direction, ensuring that the gas inside the rubber valve can be efficiently discharged. The power and speed parameters of the exhaust drive motor 5 can be customized according to the needs of the actual application scenario to meet the exhaust performance requirements under different operating conditions.

[0043] The exhaust drive motor 5 typically employs a high-efficiency, low-noise design to minimize its impact on the operating environment and ensure reliable continuous operation over extended periods. The motor housing is designed to be dustproof and waterproof to withstand potentially harsh working environments. Furthermore, the motor is equipped with an overload protection device that immediately cuts off power upon detecting abnormal current or temperature, preventing motor damage and ensuring the safe and stable operation of the entire exhaust system.

[0044] In certain specific applications, the exhaust drive motor 5 is also equipped with a feedback system, such as an encoder, to provide precise position information of the exhaust component 3. This feedback mechanism enables the control system to more accurately control the movement of the exhaust component 3, achieving more refined and complex exhaust operations to meet the needs of specific processes.

[0045] In one possible implementation, when the exhaust drive motor 5 drives the exhaust component 3 to exhaust, the exhaust drive motor 5 drives the exhaust component 3 to remain at the exhaust port 2 for at least 5 seconds.

[0046] In a specific example, when the exhaust drive motor 5 starts operating and drives the exhaust component 3 to perform the exhaust operation, the exhaust drive motor 5 controls the movement trajectory of the exhaust component 3, keeping it stationary after reaching the exhaust port 2. This dwell time needs to last for at least 5 seconds to ensure that the exhaust process is fully completed. This design ensures optimal exhaust effect and avoids problems such as abnormal system pressure due to insufficient exhaust time.

[0047] Furthermore, by ensuring that the venting component 3 remains at the venting port 2 for at least 5 seconds, residual air bubbles caused by incomplete venting can be effectively reduced. This extended residence time allows stubborn air bubbles to be expelled.

[0048] In one possible implementation, when the exhaust drive motor 5 drives the exhaust component 3 to exhaust, the exhaust drive motor 5 drives the exhaust component 3 to stay at the exhaust port 2 at least twice.

[0049] In a specific example, when the exhaust drive motor 5 starts operating and drives the exhaust component 3 to perform the exhaust operation, the exhaust drive motor 5 controls the exhaust component 3 to pause multiple times at the exhaust port 2. Specifically, during the entire exhaust process, the exhaust component 3 needs to pause at the exhaust port 2 at least twice, and the duration of each pause can be adjusted according to actual operating conditions. This design ensures a more complete and thorough exhaust process, while also helping to improve exhaust efficiency and reduce the emission of residual gases.

[0050] Furthermore, by repeatedly stopping at the exhaust port 2, the exhaust component 3 has more opportunities to come into full contact with the exhaust gas, thereby improving the gas purification efficiency.

[0051] In practical applications, the control strategy of this exhaust drive motor 5 can be adjusted according to different working environments and exhaust requirements. For example, in situations where the exhaust task needs to be completed quickly, the dwell time can be appropriately reduced, while in situations where higher exhaust quality is required, the number of dwell times or the dwell time can be appropriately increased. Through this flexible control method, the exhaust component 3 can better adapt to various complex working conditions.

[0052] In one possible implementation, such as Figure 1 Combination Figure 2 As shown, the glue valve venting device provided in this embodiment of the application further includes a fixing plate 6, which is used to install the glue valve body 1.

[0053] In a specific example, the fixing plate 6 provided in this application embodiment is made of high-strength metal material with a rust-proof surface, exhibiting excellent durability and stability. The fixing plate 6 is securely mounted on the equipment base via bolts or other fastening methods, specifically for fixing and supporting the valve body 1. The fixing plate 6 has precisely machined mounting holes that perfectly match the flange of the valve body 1, ensuring the valve remains stable and does not shift during operation. Furthermore, the edges of the fixing plate 6 are designed with reinforcing ribs, further enhancing the mechanical strength and seismic resistance of the entire exhaust device.

[0054] In one possible implementation, the glue valve venting device provided in this application embodiment further includes a glue tube 7, which is connected to the glue valve body 1 and is used to deliver glue to the glue valve body 1.

[0055] In a specific example, the hose 7 assembly is made of corrosion-resistant material, and one end is tightly connected to the glue inlet of the glue valve body 1 via a threaded connection or quick coupling. The hose 7 has an internal flow channel with a calculated diameter to ensure stable glue delivery to the glue valve body 1 at a constant pressure and flow rate. Simultaneously, the outer surface of the hose 7 is textured with anti-slip patterns for easy installation and maintenance. This design not only fulfills the basic function of glue delivery but also effectively prevents glue leakage or pressure fluctuations during delivery, thus ensuring the operational stability and reliability of the entire glue valve venting device.

[0056] To adapt to the needs of different environments and adhesive types, the hose 7 assembly is also designed to be replaceable, meaning that users can choose hoses 7 of different materials and diameters according to actual usage. This modular design greatly improves the flexibility and applicability of the hose valve venting device, while also facilitating maintenance and upgrades.

[0057] In one possible implementation, the glue valve venting device provided in this application embodiment further includes an air supply unit 8, which is connected to the glue hose 7 to deliver the glue in the glue hose 7 to the glue valve body 1 by means of air supply.

[0058] In a specific example, the air supply unit 8 is reliably connected to the hose 7 via a dedicated air pipeline. Its main function is to deliver the glue medium stored inside the hose 7 to the internal chamber of the glue valve body 1 at a constant flow rate and pressure by providing stable and controllable air pressure. This pneumatic delivery method not only ensures the continuity and stability of the glue delivery process but also effectively avoids the pulse fluctuation problems that may occur in traditional mechanical delivery methods, thereby significantly improving the exhaust efficiency and process stability of the entire glue valve system.

[0059] In one possible implementation, an air pipe 9 is provided between the air supply unit 8 and the hose 7, and the air supply unit 8 delivers air pressure to the hose 7 through the air pipe 9.

[0060] In a specific example, the air pipe 9 is made of a high-quality material that is pressure-resistant and corrosion-resistant, and has excellent sealing performance. The air supply unit 8 continuously delivers stable air pressure to the inside of the hose 7 through this connecting air pipe 9, thereby ensuring the high efficiency and reliability of air pressure transmission. This connection method not only effectively prevents gas leakage, but also ensures the uniformity and stability of air pressure transmission, providing reliable air pressure support for subsequent process operations.

[0061] To adapt to different working needs, the air supply unit 8 is also designed with multiple interfaces, which can be flexibly connected to hoses 7 of different specifications and types. These interfaces are specially designed to not only ensure a tight connection, but also to facilitate quick and easy disassembly and replacement, greatly improving the applicability and ease of maintenance of the equipment.

[0062] This application also provides a glue valve dispensing machine, including the above-mentioned glue valve exhaust device.

[0063] Specifically, this glue valve dispensing machine, through its integrated and innovative venting device, effectively solves the common problem of air bubble residue in traditional dispensing processes, significantly improving dispensing accuracy and product quality. In addition to its standard dispensing functions, this glue valve dispensing machine features optimized venting performance, ensuring a uniform and stable flow of adhesive during dispensing, thereby guaranteeing high efficiency and reliability in the dispensing operation.

[0064] The glue valve venting device and glue valve dispensing machine including the thereof provided in the embodiments of this application have many significant beneficial effects:

[0065] First, efficient venting improves dispensing quality. By setting up a dedicated venting component and vent, air bubbles in the first chamber of the dispensing valve can be specifically expelled using air pressure. This effectively solves the problems of unstable dispensing volume and irregular glue dot shape caused by air bubbles in traditional dispensing processes, significantly improving dispensing accuracy and product quality.

[0066] Secondly, the structure is optimized and highly practical. The glue collection cup can collect the air bubbles in the glue discharged from the vent in a timely manner, preventing glue from overflowing and contaminating the equipment or working environment, while reducing glue waste, which is in line with the concept of saving production; the configuration of the fixing plate provides a stable mounting base for the glue valve body, ensuring the structural stability of the device during operation.

[0067] Furthermore, it boasts a high degree of automation and is easy to operate. The coordination between the exhaust drive motor and the exhaust components enables automated control of the exhaust process, eliminating the need for manual intervention. By setting the dwell time (at least 5 seconds) and number of dwell times (at least 2) of the exhaust components at the exhaust port, the exhaust effect can be precisely adjusted according to actual production needs, ensuring sufficient exhaust and reducing the labor intensity and error rate of manual operation.

[0068] In addition, the glue supply system is highly efficient and coordinated. The cooperation between the glue hose and the air supply unit forms a stable glue supply path. The air supply unit delivers air pressure into the glue hose through the air pipe to drive the glue into the glue valve body, so that the glue supply and venting processes are coordinated, ensuring that the glue valve body always maintains the appropriate glue quantity and condition, thus improving the overall working efficiency of the device.

[0069] Finally, it has a wide range of applications and high promotional value. The glue valve dispensing machine, which includes this glue valve venting device, can be widely used in fields requiring precision dispensing, such as electronics, automobiles, and medical devices. Its stable and reliable performance and easy-to-maintain structure can meet the dispensing production needs of different scenarios, and it has high industrialization and promotion value.

[0070] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0071] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0072] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0073] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A rubber valve venting device, characterized in that, include: The glue valve body (1) includes a first cavity (11) disposed within the glue valve body (1), the first cavity (11) being used to store glue for dispensing purposes; The exhaust port (2) is provided on the side of the glue valve body (1) and serves as the exhaust outlet of the glue valve body (1); as well as The exhaust component (3) is connected to the first cavity of the valve body (1) to discharge the air bubbles in the first cavity of the valve body (1) from the exhaust port (2). When the valve body (1) needs to release air bubbles, the venting component (3) moves to the vent (2) and uses air pressure to release the air bubbles in the valve body (1) through the vent (2).

2. The venting device for the rubber valve according to claim 1, characterized in that, It also includes an adhesive collection cup (4), which is disposed on the side of the adhesive valve body (1) and located below the vent (2), for collecting bubble adhesive discharged from the vent (2).

3. The venting device for the rubber valve according to claim 1, characterized in that, It also includes an exhaust drive motor (5), which is connected to the exhaust component (3) and is used to drive the exhaust component (3) to exhaust gas.

4. The venting device for the rubber valve according to claim 3, characterized in that, When the exhaust drive motor (5) drives the exhaust component (3) to exhaust, the exhaust drive motor (5) drives the exhaust component (3) to stay at the exhaust port (2) for at least 5 seconds.

5. The venting device for the rubber valve according to claim 4, characterized in that, When the exhaust drive motor (5) drives the exhaust component (3) to exhaust, the exhaust drive motor (5) drives the exhaust component (3) to stay at the exhaust port (2) at least twice.

6. The venting device for the rubber valve according to claim 1, characterized in that, It also includes a fixing plate (6) for mounting the glue valve body.

7. The venting device for the rubber valve according to claim 1, characterized in that, It also includes a hose (7) that is connected to the glue valve body (1) and is used to deliver glue to the glue valve body (1).

8. The venting device for the rubber valve according to claim 7, characterized in that, It also includes an air supply unit (8), which is connected to the hose (7) to deliver the glue in the hose (7) to the glue valve body (1) by means of air supply.

9. The venting device for the rubber valve according to claim 8, characterized in that, An air pipe (9) is provided between the air supply unit (8) and the rubber hose (7), and the air supply unit (8) delivers air pressure to the rubber hose through the air pipe (9).

10. A glue valve dispensing machine, characterized in that, Includes the rubber valve exhaust device as described in any one of claims 1 to 9.

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