KR20180094382A - Multiaxial type auto leak test apparatus - Google Patents

Abstract

Disclosed is automatic multi-axial leak inspection equipment. The automatic multi-axial leak inspection equipment of the present invention is a facility for automatically checking leak of a packing when an automotive component equipped with the packing is manufactured, and comprises: a measuring apparatus; and a multi-axial moving apparatus for automatically mounting and dismounting the component to a jig and moving the same to a post-processing apparatus. The measuring apparatus includes: the jig to which the component is mounted so that the packing is sealed; an injection means for injecting high-pressure gas into the jig; and a measuring means for measuring the internal pressure of the jig by a sealing action. According to the present invention, when the automotive component such as a fuel filter heater is manufactured, it is possible to provide the automatic multi-axial leak inspection equipment which is configured to automatically perform leak inspection without an operator input.

Description

[0001] MULTIAXIAL TYPE AUTO LEAK TEST APPARATUS [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic multi-axial leak inspection system, and more particularly, to an automatic multi-axial leak inspection system for automatically performing leak inspection without operator input when a vehicle component such as a fuel filter heater is manufactured.

In order for the mixture of fuel and air in the engine to explode well, the fuel must not contain any impurities. Therefore, it is necessary to remove the impurities contained in the fuel, and this function is the fuel filter.

Most of the fuel filters of diesel cars are installed in the engine room, and the replacement cycle is shorter than that of gasoline due to the ultra high pressure injection method. Recently, however, the quality of the oil fuel has been improved and the life of the fuel filter is also increasing.

Prior art related to this is Korean Patent Publication Nos. 2010-0060844, 2004-0034150, 2012-0089057, and 1664583, etc.

With reference to the fuel filter of the vehicle, the fuel filter comprises a body member, a filter member, and a heater device. Since the fuel filter is a vehicle part in which the fuel is in direct contact, it is recognized that not only airtightness inspection of each component in the manufacturing process but also airtightness inspection in an assembled state is important.

As a related art related to this, Korean Patent Registration No. 849705 discloses an apparatus and a method for testing a fuel filter for automobile leakage. Korean Patent No. 849705 discloses an air leak tester for detecting fuel leakage by injecting high pressure air into a fuel filter sensor to increase and maintain the internal pressure to detect an internal pressure change; A fixing block for fixing the fuel filter to the fuel filter by inserting a first airtight rod for blocking the fuel inlet of the fuel filter and fixing the fuel filter to the fuel filter; A second airtight holding rod for blocking one of a fuel outlet or a return port of the fuel filter sensor mounted on the fixing table, and a fuel outlet of the fuel filter sensor or a return port of the fuel filter, A hole presser bush portion having a pressurizing seal formed with a high-pressure air inlet which is a passage, a fixing plate for fixing the second hermetic retaining rod and the pressurizer seal, and a second cylinder for driving the second hermetic retaining bar and the pressurizer seal up and down ; A first cylinder positioned above the hole pressurized airtight portion to drive the hole pressurized airtight portion up and down; A frame for connecting and fixing the fixing table and the first cylinder; And a compressor for supplying driving air to the first and second cylinders.

However, since the process of mounting and dismounting the fuel filter sensor to and from the leakage inspection apparatus is manually performed by the operator, the leak inspection apparatus and method for the fuel filter filter for automobile according to Japanese Patent No. 849705 is actively promoted Is being recognized in the industrial field as a technology that should be abandoned by the trend of industrial automation becoming.

Industrial automation means a system that automates the control, management, and operation of production from the planning, design, and production stages of the product. In a narrow sense, it connects the production facilities using robots and computers to communication and transportation equipment, It refers to a batch production system that simultaneously produces, assembles, inspects and packs products of various sizes and types.

After the global recession in 2008, the economy of the developed countries recovered at a rapid pace. Germany, the manufacturing powerhouse, will continue to lead the fourth industrial revolution that will soon be approaching, and plan to invest over € 200 million in the Industry 4.0 project over the long term in order to prevail the competitiveness of future manufacturing.

Worldwide, fertility rates are declining, rapidly aging, wages are on the rise, and the share of production in major manufacturing countries is declining rapidly. Industrial 4.0 is more urgently needed because of the need for innovative production efficiency improvement to overcome this. Accordingly, existing manufacturing / inspection apparatuses and methods, such as Patent No. 849705, which must be input by a large number of workers, do.

The fuel filter of the diesel vehicle is equipped with a heater to prevent the fuel from freezing in the winter. A fuel filter heater refers to a fuel heater installed on a fuel filter cartridge of an engine. Diesel has the phenomenon that the paraffinic component is solidified in some of the fuel components depending on the degree of lowering of the temperature, which interferes with the flow of fuel in the fuel filter. A fuel heating device is installed at the upper end of the fuel filter cartridge to prevent a phenomenon that may occur due to solidification of the fuel.

Although the fuel filter heater is an automobile part in which the fuel is in direct contact with the fuel filter, airtightness inspection is regarded as an important process in the manufacturing process. However, the leakage inspection device for the fuel filter heater performed at the actual manufacturing site is similar to that of the registered patent publication No. 849705 . In order to achieve rapid industrial automation of the automobile production line, development of an inspection apparatus utilizing an automation robot is urgently required.

Korean Patent Laid-Open Publication No. 2010-0060844 (Published on June 7, 2010) Korean Patent Publication No. 2004-0034150 (Publication Date: Apr. 28, 2004) Korean Patent Publication No. 2012-0089057 (Publication date: Aug. 09, 2012) Korean Registered Patent No. 1664583 (registered on Apr. 20, 2016) Korean Registered Patent No. 849705 (registered on July 25, 2008)

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic multi-axial leak inspection facility which is configured to automatically perform leak inspection without operator input when a vehicle component such as a fuel filter heater is manufactured.

According to the present invention, there is provided a facility for automatically checking the leak of a packing when a vehicle part having a packing is manufactured, comprising: a jig to which the component is mounted so as to seal the packing; A measuring device including injection means for injecting gas and measuring means for measuring the internal pressure of the jig by the sealing action; And a multi-axial moving device for automatically mounting and dismounting the part to the jig and moving the part to a post-processing device.

Wherein the multi-axial movement device includes a robot hand for holding or placing the component, and a rectangular coordinate robot for moving the robot hand in three axes, wherein the robot hand comprises: a first robot hand for mounting the component on the jig; And a second robot hand for moving the part from the jig to the post-processing apparatus.

Wherein the post-processing apparatus is provided with a marking device for laser marking the part, and the second robot hand is arranged so that the marking surface of the part is rotatably mounted on the rectangular coordinate robot so as to face the laser emerging from the marking device Lt; / RTI >

The jig may be provided with a mounting groove into which the component is inserted to seal the packing, and the measuring device may include fixing means for preventing the component inserted in the mounting groove from flowing.

Wherein the packing includes a first O-ring and a second O-ring forming a sealing space between the first O-ring and the first O-ring within the mounting groove, wherein the jig has a high pressure gas An inflow path may be formed.

The fixing means comprises: a cylinder operated by hydraulic pressure or pneumatic pressure; And a rod that is moved by the cylinder to form a flow boundary of the part.

According to the present invention, when a vehicle component with a packing is manufactured, the leak of the packing is automatically checked by the measuring device and the multi-axis moving device, so that when a vehicle component such as a fuel filter heater is manufactured, It is possible to provide an automatic multi-axial leak inspection facility that is automatically performed.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view showing a use state of the automatic multi-axial leak inspection equipment of the present invention. Fig.
Fig. 2 is a plan view showing the use state of the automatic multi-axial leak inspection equipment of Fig. 1; Fig.
3 is a left side view showing the use state of the automatic multi-axial leak inspection equipment of FIG.
Fig. 4 is a right side view showing the use state of the automatic multi-axial leak inspection equipment of Fig. 1; Fig.
FIG. 5 is a left side view of a rectangular coordinate robot of the automatic multi-axial leak inspection system of FIG. 1;
Fig. 6 is a front view of a rectangular coordinate robot of the automatic multi-axial leak inspection system of Fig. 1; Fig.
Fig. 7 is a plan view of a rectangular coordinate robot of the automatic multi-axial leak inspection facility of Fig. 1; Fig.
8 is a view showing a use state of a jig of the automatic multi-axial leak inspection equipment of Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

In the automatic multi-axial leak inspection system of the present invention, when a vehicle component such as a fuel filter heater is manufactured, leakage inspection is automatically performed without input of an operator.

Fig. 1 is a front view showing the use state of the automatic multi-axial leak inspection equipment of the present invention, Fig. 2 is a plan view showing the use state of the automatic multi-axial leak inspection equipment of Fig. 1, Fig. 5 is a left side view of a rectangular coordinate robot of the automatic multi-axial leak inspection equipment of Fig. 1, Fig. 6 is a left side view showing the state of use of the automatic multi- Fig. 7 is a plan view of a rectangular coordinate robot of the automatic multi-axial leak inspection equipment of Fig. 1, and Fig. 8 is a view showing a use state of a jig of the automatic multi-axial leak inspection equipment of Fig. .

The vehicle part 1 in which the automatic multi-axial leak inspection facility 10 of the present invention can perform the leak inspection means the vehicle part 1 manufactured in a state where the packing P is mounted on the production line. The applicant of the present invention has preferentially invented a device capable of inspecting the leak of the fuel filter heater among the vehicle parts 1 manufactured with the packing P mounted thereon. Hereinafter, the 'vehicle part 1' Filter heater < / RTI >

The shape of the fuel filter heater and thus the mounting form of the packing P may differ from each other depending on the manufacturer of the fuel filter heater, but the fuel filter heater shown in FIGS. 1 to 8 will be described below. Since the fuel filter heater shown in FIGS. 1 to 8 is already mounted on the vehicle, a detailed description thereof will be omitted.

The fuel filter heater shown in Figs. 1 to 8 is a model used in a relatively high-yielding vehicle. The fuel filter heater shown in Figs. 1 to 8 has a pair of packings (hereinafter, referred to as " connecting portions 1a ") connected to fuel injection nozzles (P), that is, the first O-ring P1 and the second O-ring P2 are seated and double-sealed.

As shown in FIGS. 1 to 4, the automatic multi-axial leak inspection system 10 of the present invention is configured such that, when the vehicle component 1 such as the fuel filter heater is manufactured, the leakage inspection is automatically performed without input of the operator A measuring apparatus 100, a multi-axis moving apparatus 200, and a post-processing apparatus 300. The measuring apparatus 100, the multi-axis moving apparatus 200, and the post-processing apparatus 300 are installed in the frame F. [

Although not shown, the automatic multi-axial leak inspection system 10 of the present invention automatically performs a leak check on the packing P portion of the vehicle component 1 by automatic control of an automatic control unit (not shown). It should be understood that the automatic control unit automatically and uniformly controls the operation of the measuring apparatus 100, the multi-axis moving apparatus 200, and the post-processing apparatus 300.

The measuring apparatus 100 includes a jig 110, an injection means 120, a measuring means 130 and a fixing means 140 for measuring the sealing performance of the vehicle P with respect to the packing P .

8 (a), the jig 110 is configured such that the component 1 is mounted on the jig 110 so that the packing P works as a seal. On the upper surface of the jig 110, (111) are formed. The connecting portion 1a is inserted into the mounting groove 111 from above and below the jig 110 by the multiaxial moving device 200. [ 8 (b), when the connecting portion 1a is inserted into the mounting groove 111, a first O-ring P1 and a second O-ring P1 are formed between the inner surface of the mounting groove 111 and the outer surface of the connecting portion 1a. A sealing space A sealed by the O-ring P2 is formed.

In the jig 110, an inflow path 112 through which a high-pressure gas flows from the injection means 120 into the sealing space A is formed. Although not shown, the injection means 120 is a structure for injecting a high-pressure gas into the inside of the jig 110 (the sealing space A), and includes a compression pump (not shown) for generating high-pressure air and a high- (Not shown), which is injected into the first and second passages 112, 112, respectively.

1 and 2, the measuring means 130 measures the internal pressure of the jig 110 by the sealing action, and includes a pressure measuring device 131 for measuring the pressure in the sealing space A . Although not shown, the sealing space A is connected to the space in which the pressure sensor is installed, and the measured value of the pressure sensor is transmitted to the pressure gauge 131.

As shown in Figs. 1 and 3, the fixing means 140 is a structure for preventing the flow of the component 1 inserted into the mounting groove 111, and includes a cylinder 141 and a rod 142 do.

The cylinder 141 is configured to move the rod 142 in the vertical direction and may be provided with a hydraulic cylinder 141 or a pneumatic cylinder 141. [ The cylinder 141 is coupled to the frame F just above the jig 110. [

The rod 142 is formed in the shape of a rod moving in the vertical direction by the cylinder 141 as a structure for forming the flow boundary of the component 1 mounted on the jig 110. [ When the component 1 is mounted on the jig 110, the automatic control unit drives the cylinder 141 to move the rod 142 downward. The lower end of the rod 142 moves to just above the component 1 and forms the flow boundary of the component 1 mounted on the jig 110 and thus the interference between the rod 142 and the mounting groove 111 The flow of the inserted part 1 is prevented.

As shown in FIGS. 1 to 7, the multi-axial movement device 200 is configured to automatically attach and detach the component 1 to the jig 110 and to move the component 1 to the post-processing apparatus 300. The robot hand 210 And a Cartesian coordinate robot 220.

The Cartesian coordinate robot 220 is configured to move the robot hand 210 in three axes and includes an X axis robot 221, a Y axis robot 222, and a Z axis robot 223. Although the Y-axis robot 222, the Z-axis robot 223 and the robot hand 210 are shown as two sets in FIGS. 1 and 2, the state in which the component 1 is mounted on the jig 110 and the state in which the component 1 Axis robot 222, the Z-axis robot 223, and the robot hand 210 are actually provided in only one set.

The Cartesian coordinate robot 220 is a robot whose structural operating characteristic is a Cartesian Coordinate System. Since each axis of the Cartesian coordinate robot 220 is only a prismatic motion, the working area of the robot becomes a straight line, a rectangle, or a rectangular parallelepiped according to the number of degrees of freedom constituting the robot. The coordinate system most familiar to human beings is one of the robots widely used in the industrial field because it is a rectangular coordinate system divided by 90 °.

The rectangular coordinate robot 220 is a robot composed only of a linear axis (Prismatic Joint) that performs linear motion. When the robot is composed of three axes of X, Y, and Z, a robot having three axes 3 degrees of freedom) robot. The rectangular coordinate robot 220 of the present invention is a three axis robot and the robot hand 210 is controlled by the X axis robot 221, the Y axis robot 222 and the Z axis robot 223, Workspace.

The robot hand 210 includes a first robot hand 211 and a second robot hand 212 that are configured to hold or place the component 1. The first robot hand 211 and the second robot hand 212 are installed together at the Y-direction end of the Y-axis robot 222 and simultaneously move together with the Y-axis robot 222.

Hereinafter, the direction in which the component 1 held by the robot hand 210 moves to the post-processing apparatus 300 is referred to as the X direction and the connection portion of the component 1 held by the robot hand 210 The direction in which the robot hand 210 is inserted into the mounting groove 111 is referred to as the -Z direction and the direction in which the component 1 caught by the robot hand 210 is moved by the Y axis robot 222 to the upper side of the jig 110 Y direction. The X direction, the -X direction, the Y direction, the -Y direction, the Z direction, and the -Z direction can be easily confirmed through the Cartesian coordinates shown in the figure.

As shown in Figs. 1 and 2, a plurality of measurement apparatuses 100 may be provided on the frame F in the X direction. Fig. 1 shows a state in which all the components 1 are mounted on a plurality of jigs 110, and Fig. 2 shows a state in which the component 1 is mounted on only one of the plurality of jigs 110. As shown in Fig.

The first robot hand 211 is used to mount the manufactured part 1 to the jig 110 and the second robot hand 212 is used to move the component 1 from the jig 110 to the post- . 5 to 7 show a state in which the first robot hand 211 has gripped the component 1. As shown in Fig.

1 to 3, the manufactured part 1 is automatically transferred in the X direction by the automatic transfer device 2 and transferred to the automatic multi-axial leak inspection facility 10. [ The automatic control section controls the multi-axial movement device 200 so that the first robot hand 211 holds the component 1 when the component 1 is transferred to the specific position by the automatic transfer device 2. [ The automatic feeding device 2 can be stopped when the part 1 is fed to a specific position.

1 and 2, the automatic control unit controls the multi-axis moving device 200 so that each time the first robot hand 211 catches the component 1 from the automatic transfer device 2, The jig 110 is mounted on one of the jig 110.

When the connecting portion 1a of the component 1 is inserted into the mounting groove 111, the automatic control unit drives the cylinder 141 to move the rod 142 downward. The lower end of the rod 142 moves up just above the component 1 to form a flow boundary of the component 1 mounted on the jig 110. The automatic control unit operates the injection means 120 and the measurement means 130 in a state where the flow of the component 1 inserted into the mounting groove 111 is prevented by the fixing means 140, The sealing performance of the second O-ring P2 is tested.

When the sealing performance is determined to be defective by the measuring means 130, the automatic control unit controls the multi-axis moving device 200 to cause the second robot hand 212 to catch the defective component 1, ) Tray T (hereinafter referred to as a "first complete state").

On the other hand, if the sealing performance is normally measured by the measuring means 130, the automatic control unit controls the multi-axis moving device 200 to cause the second robot hand 212 to hold the normally measured component 1, (X direction) to the device 300 (hereinafter referred to as a "second complete state").

As shown in FIGS. 1, 2 and 4, the post-processing apparatus 300 is provided with a marking device for laser marking the component 1. The second robot hand 212 is rotatably installed at the Y-direction end of the Y-axis robot 222 such that the marking surface of the component 1 is directed to the laser emerging from the marking apparatus. For example, the second robot hand 212 can be rotated in an angle adjustable manner by a step motor at the Y-direction end of the Y-axis robot 222. The laser-marked component 1 is transferred to the next process of the post-processing apparatus 300 via the conveyor belt B.

As shown in Fig. 1, while all of the tests of the part 1 in the plurality of measurement apparatuses 100 proceed after the first completion state and the second completion state, the multi-axis movement apparatus 200 moves the first robot hand 211 in a state in which the component 1 is held. At this time, when the test of any one of the plurality of measuring apparatuses 100 is completed, the automatic control unit (the multi-axis moving apparatus 200 is operated) And then the component 1 held by the first robot hand 211 is mounted on the jig 110. Thereafter, the automatic control unit proceeds to the first completed state or the second completed state with respect to the tested component (1).

According to the present invention, when a vehicle component with a packing is manufactured, the leak of the packing is automatically checked by the measuring device and the multi-axis moving device, so that when a vehicle component such as a fuel filter heater is manufactured, It is possible to provide an automatic multi-axial leak inspection facility that is automatically performed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

10: Leak inspection equipment
100: Measuring device 200: Multi-axis moving device
110: jig 210: robot hand
111: mounting groove 211: first robot hand
112: Inflow path 212: Second robot hand
A: Sealing space 220: Cartesian coordinate robot
120: injection means 221: X-axis robot
130: Measuring means 222: Y-axis robot
131: Pressure gauge 223: Z axis robot
140: Fixing means 1: Vehicle parts
141: cylinder 1a: connection
142: Load P: Packing
300: post-processing apparatus P1: first o-ring
F: Frame P2: Second O-ring
B: Conveyor belt 2: Automatic conveying device
T: Tray

Claims (6)

A facility for automatically checking the leak of the packing when a vehicle part equipped with the packing is manufactured,
A measuring device for measuring the internal pressure of the jig due to the sealing action; a measuring device for measuring the internal pressure of the jig by the sealing action; And
And a multi-axial moving device for automatically mounting and dismounting the part to the jig and moving the part to a post-processing device. The method according to claim 1,
Wherein the multi-axis moving device includes a robot hand for holding or placing the part and a rectangular coordinate robot for moving the robot hand in three axes,
The robot hand comprises:
A first robot hand for mounting the component to the jig; And
And a second robot hand for moving the component from the jig to the post-processing apparatus. 3. The method of claim 2,
Wherein the post-processing apparatus is provided with a marking device for performing laser marking on the component,
Wherein the second robotic hand is rotatably mounted on the rectangular coordinate robot such that a marking surface of the component faces a laser emerging from the marking device. The method according to claim 1,
Wherein the jig is formed with a mounting groove into which the component is inserted to seal the packing,
Wherein the measuring device comprises fixing means for preventing a flow of the component inserted in the mounting groove. 5. The method of claim 4,
Wherein the packing comprises a first O-ring and a second O-ring forming a sealing space between the first O-ring and the inside of the mounting groove,
Wherein the jig is provided with an inflow path through which the high-pressure gas flows into the sealing space from the injection means. 5. The method of claim 4,
Wherein,
A cylinder operated by hydraulic or pneumatic pressure; And
And a rod moving by said cylinder to form a flow boundary of said part.

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