KR20080113508A

KR20080113508A - Wearness test apparatus of plastic surface for vehicle interior

Info

Publication number: KR20080113508A
Application number: KR1020070062062A
Authority: KR
Inventors: 김학수
Original assignee: 현대자동차주식회사
Priority date: 2007-06-25
Filing date: 2007-06-25
Publication date: 2008-12-31

Abstract

An abrasion test apparatus of plastic surface for vehicle interior is provided to confirm the load applied to a specimen in real time by using a load measuring device on the lower side of a loader in which the specimen is loaded. An abrasion test apparatus of plastic surface for vehicle interior comprises a supporting part(300) in which rails(310) are formed on the upper side, a test jig(320) in which wheels are formed to slide on the rails of the supporting part, rubbing sailcloth(400) which is fixed in reciprocation directions of the test jig, and a driving part(330) formed on one side of the test jig to reciprocate the test jig, a settling part(350) which is formed under the rubbing sailcloth in order to mount a specimen. The driving part includes a moving shaft(470) which is combined with one side center of the test jig, a rotary shaft(340) coupled with one end of the moving shaft, a motor(500) which is connected to the rotary shaft in order to drive the rotary shaft, and a controller(480) which controls the speed of the motor.

Description

Wear test apparatus of plastic surface for vehicle interior

1 is a start view of a wear test apparatus for a conventional vehicle interior plastic surface,

2 is a friction test start view of the wear surface of the conventional plastic vehicle interior,

3 is a view of the wear test apparatus of the vehicle interior plastic surface according to the present invention,

Figure 4 is an operation of the wear tester mounting portion of the vehicle interior plastic surface according to the present invention,

5 is an operation of the wear tester fixture of the plastic surface for the vehicle interior according to the present invention,

6 is a disclosure of another embodiment according to the present invention.

300: support 310: rail

320: test jig 330: drive unit

350: mounting portion 400: friction canvas

410: fixture 520: load measuring instrument

The present invention relates to an abrasion test apparatus for a plastic surface for vehicle interior, and has a problem that the friction canvas affects the specimen according to the shape and mounting position of the specimen. By configuring the test equipment to be subjected to abrasion evaluation under the present invention, the apparatus for abrasion testing of the plastic surface of a vehicle interior obtains a reproducible curved abrasion test result regardless of the shape and mounting position of the specimen.

In general, the vehicle interior plastic is subjected to a surface treatment on the plastic substrate to improve the appearance or to prevent scratches through the high quality of the material.

Such surface treatment is various methods such as paint coating, wood grain, insert film and vacuum deposition, and is applied onto the substrate through various processes.

However, since the physical properties of the surface treatment layer are greatly influenced by the surface treatment process conditions of the material, careful management is required for not only the material itself but also process management.

Due to the recent issue of quality issues related to sensibility quality, such as peeling of interior coatings, abrasion resistance testing is an important item in the evaluation of surface treatment materials, process development, and quality assurance. In order to confirm, abrasion resistance evaluation on surface treatment parts is being conducted.

Since the wear test is affected by the surface condition and shape, it is directly tested in the part state unlike other items that are tested in the flat specimen state.

In particular, the curved wear test of plastic parts evaluates the basic physical properties of surface treatment materials by rubbing the surface of the surface-treated plastic surface using friction cloth and rubbing the friction cloth and the surface of the part at a specified reciprocating speed and reciprocation length under a certain load. It is a test.

1 is a view illustrating a conventional wear test apparatus for a plastic vehicle interior.

As shown in FIG. 1, the plastic part 100 is fixed to the holder 110, and one side of the friction canvas 120 is connected to the weight 130 to apply a load.

This is a test method in which the friction canvas 120 and the component 100 are in contact with each other and are rubbed at a set speed, a friction distance, and the number of times to determine whether the surface of the component is exposed.

The most important test condition for the curved wear test of plastic parts is the evaluation under the specified load.

This is because the severity of abrasion is determined by the load applied to the specimen 100, which greatly affects the test results.

In this curved wear test, the wear speed and length can be kept constant and adjusted by adjusting the rotation speed and radius of the driving motor 140 in the wear device, but applying a constant load every test is difficult to implement as a conventional device. There is a problem.

This is because the curved surface wear test of the vehicle interior material is taken from a single piece and the size and shape of each part are different, and even if the same part is tested, the size and shape of the sample varies slightly depending on the part and method to be taken.

Such a difference in size and shape affects the position where the friction canvas and the specimen come into contact with each other and the load (pressure) applied to the specimen, which causes a problem of poor reproducibility of the test.

In addition, when the test part is a small (thin thickness) part, even if the specimen is placed, the thickness of the product is so thin that it is difficult to apply the load by the friction canvas, so that the wear test becomes difficult unless other auxiliary equipment is used.

FIG. 2 is a view illustrating a friction coating of a wear test apparatus for a plastic vehicle interior.

In addition, since the long friction canvas 120 has a load applied to only one portion and the other side reciprocates, when the test part is curved, as shown in FIG. 2, the friction canvas 120 is slid to one side during the reciprocation movement. There is a problem that the phenomenon 150 is in contact with the guide rail is frequently generated.

In addition, since the friction canvas 120 of a long length moves at a high speed, there is a problem in that a section in which the friction canvas 120 is worn while moving back and forth is not constant.

Because of the above problems, in order to obtain the reliability of the test results, the investigator must continuously check the abrasion test process during the evaluation, and therefore the work of the tester who performs 500 to 10,000 abrasion tests depending on the type of surface treatment material. There is a problem that the efficiency is reduced.

Therefore, the present invention has been invented to solve the above-described problems, the upper and lower regulators and load measuring instruments are formed in the lower part of the mounter on which the specimen is mounted so that the desired load is confirmed and adjusted in the test, and the test jig is reciprocated by the rotation of the drive shaft. Its purpose is to ensure the reliability of the test results by moving and applying a constant wear load to the specimen.

In order to achieve the above object, the present invention provides a wear test apparatus for a vehicle interior plastic surface, comprising: a support having a longitudinal pedestal formed at a lower side thereof, and rails formed at both sides of the upper side; A test jig having wheels formed at a lower portion thereof so as to be coupled to the rail of the support part in a sliding manner; A friction canvas fixed in the reciprocating direction of the test jig; A driving part formed at one side of the test jig so as to perform a reciprocating motion of the test jig; Characterized in that the mounting portion is mounted to the specimen on the lower portion of the friction canvas.

In a preferred embodiment, the drive unit and a moving shaft coupled to the center of one side of the test jig; A rotating shaft coupled to one end of the moving shaft; A motor connected to the rotary shaft to drive the rotary shaft; Characterized in that the controller is configured to control the rotational speed of the motor.

In another preferred embodiment, the mounting portion is mounted to the specimen is mounted; a load measuring device formed under the cradle to measure the load applied to the specimen mounted to the mount; Characterized in that the upper and lower controller is formed in the lower portion of the load measuring instrument so that the height of the mount is adjusted.

In another preferred embodiment, the load meter is characterized in that formed by a load cell.

In another preferred embodiment, the test jig is characterized in that the fixing fixture is fixed to the friction canvas by the rotation of the switch on both sides.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a view illustrating an abrasion test apparatus for a vehicle interior plastic surface according to the present invention, FIG. 4 is an operation view of a wear test apparatus mounting portion of a vehicle interior plastic surface according to the present invention, and FIG. Fig. 1 shows the operation of the wear tester fixture on the plastic surface of a vehicle.

As shown in FIG. 3, the test jig 320 mounted on the rail 310 of the support part 300 reciprocates by the rotation of the rotation shaft 340 of the driving part 330, and is mounted on the mounting part 350. Abrasion test of the specimen 360 is in progress, and the height of the specimen 360 is adjusted by the upper and lower controller 370 according to the pressure load of the specimen 360 during the test, and the wear test of the uniform load required in the test is performed. Is done.

The support part 300 has pedestals 380 formed on both sides of the lower portion so that a space is formed in the center thereof, and rails 310 are formed on both sides of the upper portion so that the test jig 320 reciprocates by the wheels 390.

Here, the pedestal 380 is preferably designed in consideration of the load of the test jig 320 is mounted by the support 300.

In addition, the length of the rail 310 is preferably formed longer than the distance between the two end points during the reciprocating motion of the test jig 320.

The test jig 320 is formed in a rectangular shape having four axes, and is mounted on a lower portion of the shaft mounted on the rail 310 to reciprocate in the rail 310 of the support 300 by the operation of the driving unit 330. A plurality of wheels 390 are formed.

In addition, both axes of the test jig 320 that is not mounted to the rail 310 has a fixing device 410 is formed so that the friction canvas 400 is fixed.

Here, as shown in FIG. 5, as shown in FIG. 5, the compression unit 430 is lowered by the rotation of the switch 420 so that both sides of the friction canvas 400 are the compression unit 430 and the flat plate unit 440. By being fixed between the), the replacement process of the friction canvas 400 is simplified.

The friction cloth 400 is fixed to the fixing device 410 formed on both sides of the test jig 320, the tension is securely fixed to prevent the wear test of the specimen 360 is inefficient due to the wrinkles during the test Preferably, the width thereof is varied depending on the contact surface in contact with the specimen (360).

The driving unit 330 is connected to the driving shaft 470 perpendicular to the driving shaft 460 of the test jig 320, and is connected to one end of the moving shaft 470 to reciprocate the test jig 320 by rotation. It consists of a rotating shaft 340 for movement, a motor 500 that operates the rotating shaft 340 to rotate, and a controller 480 for controlling the rotational speed of the motor 500.

Here, when the length of the moving shaft 470 is kept constant so that the rotating shaft 340 is close to the test jig 320 by the rotation, the test jig 320 moves in a direction away from the drive unit 330, the rotating shaft When 340 moves away from the test jig 320, the test jig 320 moves in a direction close to the driving unit 330, so that the test jig 320 reciprocates.

In addition, the controller 480 adjusts the rotational speed of the motor 500 so that the wear rate applied to the specimen 360 is controlled according to the purpose to be tested.

The mounting unit 350 is a mounting device 510 to which the test piece 360 is fixed, a load measuring device 520 to measure the load applied to the test piece 360 fixed to the mounting device 510, and the mounting device 510. The upper and lower controller 370 to adjust the height of the.

Here, the load measuring device 520 formed at the bottom of the mounter 510 may use an analog type gauge gauge, but it is more efficient in terms of accuracy to use a digital load cell.

The load applied to the specimen 360 through the load measuring device 520 using the load cell can be confirmed in real time.

In addition, the up and down controller 370 raises the mounter 510 on which the specimen 360 is mounted as shown in FIG. 4 to generate a load applied to the specimen 360, and is sensed by the load measuring instrument 520. By adjusting the height of the mounting unit 510 when the loaded load has an error with the test load, the load applied to the specimen 360 by the friction canvas 400 is adjusted.

Therefore, even if the shape or size of the specimen 360 is different, it is possible to check and adjust the load applied to the specimen 360 by the load measuring instrument 520 and the up and down controller 370, so that the evaluation under the load required in the test can be performed. It will be possible.

6 is a view illustrating another embodiment according to the present invention.

As shown in FIG. 6, a plurality of friction canvases 400 are mounted by both side holders 410 of the test jig 320, and a plurality of specimens 360 are mounted below the friction canvas 400. The mounting portion 350 is formed.

Accordingly, the wear test on several specimens 360 can be performed at the same time, thereby reducing the time required for the test.

As described above, the wear test apparatus of the vehicle interior plastic surface according to the present invention provides the following effects.

First, a load measuring device is formed in the lower part of the mounter on which the specimen is mounted so that the load applied to the specimen is confirmed in real time, so that the wear test is performed with a desired wear load.

Second, the height of the specimen is adjusted by the up and down controller to control the load on different specimens,

Third, the friction canvas reciprocates from side to side in a state where the load required by the test equipment is reciprocated, and the abrasion test is carried out at a constant load, thereby ensuring the reliability of the test conditions and obtaining high reproducibility results.

Fourth, by cutting the friction canvas to a sufficient width and firmly fixed to the fixture of the test jig, there is an effect that the replacement process of the friction canvas is simplified.

Claims

In the wear test apparatus of the plastic surface for vehicle interiors,

A support portion having a longitudinal pedestal formed at a lower portion thereof and a rail formed at both upper portions thereof;

A test jig having wheels formed at a lower portion thereof so as to be coupled to the rail of the support part in a sliding manner;

A friction canvas fixed in the reciprocating direction of the test jig;

A driving part formed at one side of the test jig so as to perform a reciprocating motion of the test jig;

Wear test apparatus for a plastic surface for the interior of the vehicle, characterized in that the mounting portion is formed on the lower portion of the friction canvas is mounted.

The method of claim 1, wherein the driving unit and the moving shaft coupled to the center of one side of the test jig;

A rotating shaft coupled to one end of the moving shaft;

A motor connected to the rotary shaft to drive the rotary shaft;

Wear test apparatus for a plastic surface for a vehicle interior, characterized in that consisting of a controller for controlling the rotational speed of the motor.

The mounting apparatus of claim 1, wherein the mounting part comprises: a mounting device on which a specimen is mounted;

A load measuring device formed under the cradle so that the load applied to the specimen mounted on the mounter is measured;

Wear test apparatus of the plastic surface for the vehicle interior, characterized in that the upper and lower controller is formed in the lower portion of the load gauge so that the height of the mount is adjusted.

The wear test apparatus of claim 3, wherein the load measuring device is formed of a load cell.

The wear test apparatus of claim 1, wherein the test jig is provided with fixing fixtures on which both sides of the test jig are fixed by rotation of the switch.