KR102093224B1 - Vacuum pneumatic module - Google Patents

Abstract

The present invention relates to a vacuum pneumatic module for fixing a workpiece using a vacuum when processing the workpiece. More specifically, the present invention can reduce air consumption during vacuum generation and maintenance, and stably fix the workpiece. The vacuum pneumatic module of the present invention includes: a pneumatic line; a vacuum valve; an ejector; a vacuum line; a break line; a break valve; a check valve; and a pressure switch.

Description

Vacuum pneumatic module {Vacuum pneumatic module}

The present invention relates to a vacuum pneumatic module for fixing a workpiece by using a vacuum when processing a workpiece, and more particularly, to a vacuum pneumatic module capable of stably fixing a workpiece by reducing air consumption when generating and maintaining a vacuum.

In order to stably fix the workpiece in a certain position during machining using a lathe or milling, a method such as fixing the workpiece directly using a holder such as a clamp or indirectly fixing the workpiece by adsorbing the workpiece using pneumatic is used.

Among them, the indirect fixing method using pneumatic pressure has an advantage that damage such as scratches does not occur on the workpiece during fixing, and thus it is a preferred fixing method in the case of a workpiece that emphasizes appearance.

In particular, in the case of recently released mobile phones, the battery is made of an integral type embedded inside the case, and the metal material is also preferred, so it minimizes damage to the case and minimizes damage to the case while processing the case. The way is in the spotlight.

A general vacuum pneumatic device is equipped with an ejector on a flow line through which air flows in and out, and adsorbs a workpiece using a vacuum generated through the ejector.

On the other hand, mobile phones process hundreds of cases at the same time to mass-produce in a short period of time, and when fixing hundreds of cases at the same time, the amount of air is consumed to fix them using pneumatics. There are limits.

In addition, since the mobile phone case is small in size and light in weight, it is sensitive to fixed loads and shocks, so it is very important to maintain a constant pneumatic pressure at a proper pressure during vacuum adsorption, thereby minimizing air consumption for vacuum adsorption of workpieces. However, the development of vacuum pneumatic technology for precise pneumatic control and maintenance is required.

Korean Registered Patent Publication No. 10-1331692 (2013.11.20. Announcement)

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a vacuum pneumatic module capable of stably adsorbing and fixing a work piece while minimizing air consumption using a vacuum pressure controller.

In addition, it is to provide a vacuum pneumatic module, which is provided with a filter on a vacuum line in which vacuum is generated, filters impurities introduced through the adsorption unit, and discharges filtered impurities using a pneumatic line for generating vacuum.

In addition, the main components are arranged inside the case, but the configuration requiring manual operation is provided outside the case to provide a vacuum pneumatic module that improves the convenience of operation.

In addition, it is to provide a vacuum pneumatic module in which the air flow line and the electric or communication line are separated.

Vacuum pneumatic module according to an embodiment of the present invention, an air inlet nozzle is formed at the front end, an air discharge nozzle is formed at the rear end, the pneumatic line through which air having a certain pressure flows; A vacuum valve provided on the pneumatic line to maintain or block the air flow of the pneumatic line by opening and closing; An ejector provided in series at the rear end of the vacuum valve on the pneumatic line to generate a vacuum pressure in the suction chamber through air flowing through the pneumatic line; A vacuum line having a front end connected to a suction chamber of the ejector and a vacuum nozzle formed at a rear end to form a vacuum therein by driving the ejector; A breaking line in which a front end is connected in parallel to the front end of the ejector on the pneumatic line, and the other end is connected in parallel on the vacuum line; A destruction valve provided on the destruction line to maintain or destroy the vacuum of the vacuum line by opening and closing; A check valve provided on the vacuum line to prevent backflow of air flowing into the suction chamber; And a pressure measuring means connected in parallel to the front end of the check valve on the vacuum line to check the pressure of the vacuum line to maintain the vacuum pressure of the vacuum line at a specific pressure, and a control unit controlling opening and closing of the vacuum valve. Pressure switch including; The pressure switch, when the pressure measured by the pressure measuring means is less than or equal to a specific pressure, maintains the vacuum valve open or open through the controller, and when the pressure exceeds a certain pressure, the controller Keep the vacuum valve closed or closed.

In addition, on the vacuum line, a filter for filtering foreign matter flowing from the vacuum nozzle is provided at the front end.

In addition, the module, the front end is connected to the filter, the other end is formed with a foreign substance discharge nozzle discharge line for discharging the foreign substance; Including, when the breaking valve is opened, the foreign matter is transferred to the foreign matter discharge nozzle by air flowing from the breaking line to the vacuum nozzle.

In addition, on the discharge line, a discharge valve for opening and closing the discharge line; Is provided, the module, the front end is connected in parallel to the rear end of the breaking valve on the breaking line, the rear end is connected to the discharge valve drive line; Including, and the discharge valve, and maintains a closed state through the elastic member in the usual, is opened by the air pressure flowing through the drive line.

In addition, on the breaking line, a flow rate control valve for adjusting the flow rate of the air flowing through the breaking line to the rear end of the breaking valve; Is further provided.

In addition, a plurality of ejectors are connected in parallel on the pneumatic line and the vacuum line.

In addition, the module, the vacuum valve, the breaking valve, the ejector, the check valve and the case on the housing housing the discharge valve is accommodated, the pressure switch, the filter and the flow control valve is disposed on the outer surface of the case.

In addition, the breaking valve includes a manual opening button for manually opening the breaking valve, and the module has an operation hole for manipulating the manual opening button on the case to enable manipulation of the manual opening button from the outside. Is formed.

In addition, a connector hole is formed on one side of the case so that the telecommunication line connector for supplying or controlling electricity to the module is exposed to the outside, and the air inlet nozzle, air outlet nozzle, vacuum nozzle and foreign substance discharge nozzle are When the connector hole is disposed on the same surface as the formed surface, the connector hole is separated or spaced apart.

The vacuum pneumatic module of the present invention according to the above configuration has an effect that can be applied to a workpiece that is simultaneously processed in large quantities, such as a case of a mobile phone, because it is possible to stably and precisely fix the workpiece while minimizing air consumption.

In addition, it is possible to filter the foreign matter flowing into the adsorption unit, and discharge the filtered foreign matter without additional configuration, thereby improving the durability of the module at a minimum cost.

In addition, the main parts are protected through the case, and the parts requiring manipulation are disposed outside the case, thereby improving the durability of the module and improving the convenience of operation.

In addition, the electric communication line for supplying power to the module and controlling the configuration and the vacuum pneumatic line through which the air flows are separated or isolated to facilitate the installation of the module and facilitate maintenance.

1 is a hydraulic circuit diagram of a vacuum pneumatic module of the present invention
Figure 2 is an overall perspective view of the vacuum pneumatic module of the present invention
3 is a front view of the vacuum pneumatic module of the present invention
4 is a bottom view of the vacuum pneumatic module of the present invention
5 is a front view inside the vacuum pneumatic module of the present invention (when removing the front cover)

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a hydraulic circuit diagram of a vacuum pneumatic module (100, hereinafter, 'module') according to an embodiment of the present invention. The module 100 is a vacuum line (L2) in which vacuum is formed through a pneumatic line (L1), a pneumatic line (L1) and an ejector 140 provided on the pneumatic line (L1) to generate air pressure through air flow. , Destruction line to destroy the vacuum of the vacuum line (L2) by recovering the air pressure of the discharge line (L3) and the pneumatic line (L1) for discharging the filtered foreign matter in the filter 160 provided on the vacuum line (L2) ( L4).

The air inlet nozzle 111 is formed at the front end of the pneumatic line L1, and the air outlet nozzle 115 is formed at the rear end. The regulator 120 is provided on the front end of the pneumatic line L1 to control the air pressure of the air flowing along the pneumatic line L1. A vacuum valve 131 is provided at the rear end of the regulator 120 on the pneumatic line L1 to determine whether or not air flows through the regulator 120 by opening and closing. Accordingly, when the vacuum valve 131 is opened, a vacuum is formed in the vacuum line L2 through a flow of air having a specific air pressure, and when the air is closed, the flow of air is blocked to release the vacuum of the vacuum line L2. An ejector 140 is provided at a rear end of the vacuum valve 131 on the pneumatic line L1. The ejector 140 is connected to the rear end of the vacuum line L2 and is configured to form a vacuum in the vacuum line L2 when air having a specific air pressure flows through the pneumatic line L1. The ejector 140 may be applied with a configuration of a conventional vacuum ejector configured to introduce a second fluid connected in parallel to the suction chamber into the suction chamber when moving the first fluid through the suction chamber at a constant pressure. It can be configured by applying a tube through which the fluid moves to the pneumatic line (L1), and a tube through which the second fluid moves to the vacuum line (L2). In the ejector 140, a plurality of first and second ejectors 141 and 142 are connected in parallel on the pneumatic line L1 and the vacuum line L2, thereby increasing the vacuum suction flow rate from the vacuum line L2 to perform vacuum performance. Improve it. First and second silencers 145 and 146 may be provided at a rear end of each of the first and second ejectors 141 and 142 to reduce noise of air discharged through the ejector 140. Air introduced into the ejector 140 from the rear ends of the pneumatic line L1 and the vacuum line L2 is discharged through the air discharge nozzle 115.

Vacuum line (L2) is a vacuum nozzle 112 is formed at the front end, the rear end is connected to the suction chamber of the ejector 140 to maintain the vacuum line (L2) inside the vacuum state by the operation of the ejector 140 , It is configured to adsorb the workpiece to the vacuum suction unit (not shown) connected to the vacuum nozzle 112. A check valve 150 is provided on the vacuum line L2 to prevent air from the rear end of the vacuum line L2 from flowing backward to the front end of the vacuum line L2. This causes the vacuum state of the vacuum line L2 to be maintained or the vacuum release rate to be slowed down even when the air pressure of the pneumatic line L1 is released. The filter 160 is provided at the front end of the vacuum line L2. The filter 160 filters a foreign material such as a cutting chip of a workpiece or a cutting oil of a processing machine that may be introduced from the front end of the vacuum line L2, and the check valve 150 or ejector 140 disposed at the rear end of the filter 160 ) To prevent damage or malfunction. A pressure switch 180 is provided between the front end of the check valve 150 on the vacuum line L2 and the rear end of the filter 160. The pressure switch 180 is connected in parallel on the vacuum line L2 to check the vacuum pressure of the vacuum line L2, and is electrically connected to the vacuum valve 131 so that the vacuum pressure can maintain a specific pressure. (131) is controlled. That is, when the user sets the vacuum pressure by using the pressure switch 180, when the vacuum pressure of the vacuum line L2 is lower than the setting value, the vacuum pressure is increased by opening the vacuum valve 131, and when the setting value is exceeded It is configured such that the vacuum pressure is maintained or gradually reduced by closing the vacuum valve 131.

Discharge line (L3) is connected to the front end of the filter 160, the rear end is formed of a foreign matter discharge nozzle 113 is configured to discharge the foreign matter filtered by the filter 160 to the outside of the module (100). A discharge valve 165 is provided on the discharge line L3 to determine whether or not foreign substances are discharged through opening and closing of the discharge valve 165. The discharge valve 165 operates through air flowing through the destruction line L4, which will be described later, and the detailed configuration will be described in detail through the destruction line L4.

The breaking line (L4) is connected in parallel between the regulator 120 on the pneumatic line (L1) and the vacuum valve (131), and the rear end of the check valve (150) and filter (160) on the vacuum line (L2). ) In parallel. A destruction valve 132 is provided on the destruction line L4. Therefore, the breaking line (L4), when the breaking valve 132 is closed, the vacuum of the vacuum line (L2) is maintained, and when the breaking valve 132 is opened, the vacuum of the vacuum line (L2) is destroyed to vacuum the nozzle. It is configured to reduce or eliminate the inhalation of 112. That is, when the processing of the workpiece is completed, the suction force of the vacuum nozzle 112 is removed to separate the workpiece from the vacuum adsorption unit. At this time, a flow control valve 170 may be provided at the rear end of the vacuum valve 131 on the breaking line L4. This is to prevent the vacuum pressure of the vacuum line (L2) from dropping rapidly when the destruction valve (132) is opened, to prevent the impact on the workpiece when the workpiece is separated from the vacuum adsorption unit, through manual manipulation of the flow control valve (170). It can be configured to properly adjust the separation impact load required for the workpiece. In addition, the driving line L5 may be provided in parallel on the breaking line L4. The driving line (L5) has a front end connected in parallel between the breaking valve (132) and the flow control valve (170) on the breaking line (L4), and the rear end is connected to the discharge valve (165). Therefore, when the destruction valve 132 is opened, air flowing along the destruction line L4 is transmitted to the discharge valve 165 along the drive line L5 to open the discharge valve 165. That is, the discharge valve 165 is opened by the pneumatic fluid flowing through the breaking line (L4), and can be configured as a pneumatic valve that maintains a closed state by elasticity.

In addition, the foreign matter filtered by the filter 160 using the air pressure flowing through the destruction line (L4) is configured to move to the foreign matter discharge nozzle 113 along the discharge line (L3).

Hereinafter, a specific embodiment of the module 100 having the above configuration will be described in detail with reference to the drawings.

2 is a perspective view of a module 100 according to an embodiment of the present invention, and FIG. 3 is a front view of the module 100 according to an embodiment of the present invention. 4 is a bottom view of the module 100 according to an embodiment of the present invention.

As illustrated, the module 100 accommodates a part of the components inside the case 101 on the enclosure, and the rest of the components requiring user manipulation are disposed outside the case 101 to improve operation convenience. That is, the regulator 120 for adjusting the air pressure of the pneumatic line L1, the flow control valve 170 for controlling the release flow of vacuum pressure, and the operation for manually destroying the vacuum of the vacuum line L2 in an emergency A hole 185 is provided. On the breaking valve 132, a manual opening means capable of manually opening the breaking valve 132 is provided and may be formed in the form of a button, for example. Therefore, the operation hole 185 is formed in the form of a hole penetrating the case 101 of the corresponding portion of the button so that the button can be operated, so that the manual opening means of the destruction valve 132 provided inside the case 101 is provided. The case 101 is configured to be operated from the outside. This is to prevent manual opening of the destruction valve 132 due to carelessness when the manual opening means is disposed outside the case 101. In addition, a filter 160 that needs to be replaced after a period of time and a pressure switch 180 for setting and controlling vacuum pressure may be disposed on the front surface of the case 101.

In addition, the air inlet nozzle 111, the vacuum nozzle 112, the foreign substance discharge nozzle 113 and the air discharge nozzle 115 provided in the module 100 may be disposed on any one side of the case 101, , For example, may be disposed under the case 101. In the drawing, the air inlet nozzle 111, the vacuum nozzle 112, the foreign substance discharge nozzle 113, and the air discharge nozzle 115 are shown to be arranged together on one side, but on different sides according to the required design conditions. It may be deployed.

In addition, the power connector for supplying power to the module 100 or communication connectors for controlling the module 100 is configured to be exposed to the outside through the connector hole 102a formed in the upper surface 102 of the case 101. Each nozzle and wires were configured to face each other. For example, the connector hole 102a may be disposed on the upper side of the case 101. In the drawing, the connector hole 102a is shown as being disposed on the upper side of the case 101, but may be arranged on another surface according to the required design condition.

Therefore, preferably, the air inlet nozzle 111 formed at the front end of the pneumatic line L1, the air discharge nozzle 115 formed at the rear end, the vacuum nozzle 112 formed at the front end of the vacuum line L2, and the discharge line ( All foreign matter discharge nozzles 113 formed at the rear end of L3) are configured to be disposed on the lower surface of the case 101.

In another embodiment, even when the air inlet nozzle 111, the vacuum nozzle 112, the foreign substance discharge nozzle 113 and the air discharge nozzle 115 are disposed on the upper surface of the case 101, they are separated or separated from the connector hole 102a. It was configured to be placed in isolation from the telecommunication connector.

That is, any combination as long as the telecommunication connector and the air inlet nozzle 111, the vacuum nozzle 112, the foreign substance discharge nozzle 113, and the air discharge nozzle 115 can be separated or separated by the connector hole 102a. Also applicable.

5 shows an internal front view (when removing the front cover of the case 101) of the module 100 according to an embodiment of the present invention.

As shown in the example of the inside of the case 101 does not require manual control, for example, a vacuum valve 131, a breaking valve 132, an ejector 140, a check valve 150 and a discharge valve 165 The configuration of can be accommodated. Therefore, the above configuration can ensure durability and reduce malfunction or failure of the module due to arbitrary manipulation.

It should not be interpreted that the technical spirit is limited to the above-described embodiments of the present invention. Of course, the scope of application is various, and various modifications can be implemented at the level of those skilled in the art without departing from the gist of the present invention as claimed in the claims. Accordingly, such improvements and modifications fall within the protection scope of the present invention as long as it is apparent to those skilled in the art.

100: vacuum pneumatic module
L1: Pneumatic line
L2: Vacuum line
L3: discharge line
L4: Destruction line
L5: drive line
120: regulator
131: vacuum valve 132: release valve
140: ejector
150: check valve
160: filter 165: discharge valve
170: flow control valve
180: pressure switch

Claims (9)

An air inlet nozzle is formed at the front end, an air outlet nozzle is formed at the rear end, and a pneumatic line through which air having a certain pressure flows;
A vacuum valve provided on the pneumatic line to maintain or block the air flow of the pneumatic line by opening and closing;
An ejector provided in series at the rear end of the vacuum valve on the pneumatic line to generate a vacuum pressure in the suction chamber through air flowing through the pneumatic line;
A vacuum line having a front end connected to a suction chamber of the ejector and a vacuum nozzle formed at a rear end to form a vacuum therein by driving the ejector;
A breaking line in which a front end is connected in parallel to the front end of the ejector on the pneumatic line, and the other end is connected in parallel on the vacuum line;
A destruction valve provided on the destruction line to maintain or destroy the vacuum of the vacuum line by opening and closing;
A check valve provided on the vacuum line to prevent backflow of air flowing into the suction chamber; And
It is connected in parallel to the front end of the check valve on the vacuum line and includes pressure measuring means for checking the pressure of the vacuum line to maintain the vacuum pressure of the vacuum line at a specific pressure, and a control unit for controlling opening and closing of the vacuum valve. Pressure switch; It includes,
The pressure switch maintains an open or open state of the vacuum valve through the control unit when the pressure measured by the pressure measuring means is less than or equal to a specific pressure, and seals the vacuum valve through the control unit when the pressure is exceeded. Or keep it closed,
On the vacuum line, a filter for filtering foreign matter flowing from the vacuum nozzle at the front end is provided,
The module, the front end is connected to the filter, the other end is formed with a foreign substance discharge nozzle discharge line for discharging the foreign substance; It includes,
When the breaking valve is opened, the foreign matter is transferred to the foreign matter discharge nozzle by air flowing from the breaking line to the vacuum nozzle, the vacuum pneumatic module.
delete delete According to claim 1,
On the discharge line,
A discharge valve for opening and closing the discharge line; Is provided,
The module,
A driving line having a front end connected in parallel to the rear end of the breaking valve on the breaking line, and a rear end connected to the discharge valve; Including,
The discharge valve maintains a closed state through an elastic member, and is opened by pneumatic air flowing through the driving line.
The method of claim 4,
On the breaking line,
A flow rate control valve for controlling the flow rate of air flowing through the destruction line to the rear end of the destruction valve; The vacuum pneumatic module is further provided.
According to claim 1,
The ejector,
A plurality of vacuum pneumatic modules, which are connected in parallel on the pneumatic line and the vacuum line.
The method of claim 5,
The module,
The vacuum valve, the breaking valve, the ejector, and includes a case on the housing housing the check valve and discharge valve,
The pressure switch, filter and flow control valve, is arranged on the outer surface of the case, vacuum pneumatic module.
The method of claim 7,
The breaking valve includes a manual opening button for manually opening the breaking valve,
The module is a vacuum pneumatic module, the operation hole for the manual open button operation is formed on the case to enable the operation of the manual open button from the outside.
The method of claim 7,
A connector hole is formed on one side of the case so that the telecommunication line connector for supplying or controlling electricity to the module is exposed to the outside,
When the air inlet nozzle, air discharge nozzle, vacuum nozzle and foreign matter discharge nozzle is disposed on the same surface as the connector hole is formed, is separated or spaced apart from the connector hole, vacuum pneumatic module.

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