JPH09264837A - Holding implement for test piece for outdoor direct weathering test - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a holding implement which enhances the efficiency of a test by a method wherein the flexure and the removal of a test piece are reduced, the test can be made with high efficiency and the test piece is attached and removed easily. SOLUTION: A holding implement is formed in such a way that a moving chuck 9 which is moved along guide rods 8 connecting a fixed base 6 to a fixed chuck 7 is installed and that a screw rod 10 which is shaft-supported by the fixed base 6 so as to be rotatable is screwed to a moving chuck base 901 at the moving chuck 9. Therefore, test pieces in various sizes can be sandwiched and held between the fixed chuck 7 and the moving chuck 9. In the holding implement which is held between sample mounting crosspieces, a test piece can be attached and removed easily in the unit of the holding implement, and the efficiency of an operation can be enhanced. In addition, the test piece which is sandwiched and held between the fixed chuck 6 and the moving chuck 9 is held in a state that tension is given to the test piece, a test can be made so as to conform to the usage state of a material used in a state that tension is given, and the test can be made with high accuracy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test piece holder for an outdoor direct exposure test for holding a weather resistance test piece such as an automobile part.

[0002]

[Prior Art] JIS D0205 for weather resistance test of automobile parts
It is stipulated respectively in "Weather resistance test method for automobile parts", JIS Z2381 "Outdoor exposure test method general rule" and JIS K7219 "Plastic outdoor exposure test method general rule". In this test, the test piece is directly exposed to the outdoors, and the resistance to deterioration of parts in the natural environment is examined (referred to as the outdoor direct exposure test method). This resistance is judged by observing the decrease in strength and gloss and the change in color of the test piece directly exposed to the outdoors.

Further, this outdoor direct exposure test is conducted for a few months.
The test pieces are exposed to sunlight, wind, and rain for a long period of three years, and the resistance is examined with respect to weather resistance, light resistance, ozone resistance, and the like. In order to provide commonality or generality to the test environment, the direction of exposure is the southeast plane, the distance from the equipment installation surface (ground) to the bottom of the test piece is 500 mm or more, and the horizontal plane. The angle to is 30
It is set at 45 degrees or 45 degrees. In order to maintain this angle, when fixing the test piece to the hard one, only the upper part may be fixed and the lower part may be the free end.For soft ones such as cloth, the upper and lower parts should be fixed. It is decided to fix it.

As shown in FIG. 6, the outdoor direct exposure test device determined by JIS D0205 supports a sample mounting frame 3 provided with a sample mounting bar 2 on a column 1 so that the sample mounting frame 3 is rotatable, and as shown in FIG. In the case of a soft test piece, the upper and lower ends of the test piece 4 are fixed by sandwiching them between the sample mounting bars 2 and the sample mounting frame 3 so that the angle changing arm 5 (FIG. 6) receives the sunlight. The test piece 4 is exposed to direct sunlight by changing the angle.

[0005]

In the conventional outdoor direct exposure test apparatus described above, when the upper and lower ends of a soft test piece such as a cloth are sandwiched between sample mounting bars and exposed to wind and rain for a long period of time, as shown in FIG. As shown in Fig. 4, the test piece 4 may bend like 4 ', and in some cases, one end of the test piece may come off like 4 ". In this way, the test piece bends or one end comes off. In this case, there is a problem in that the degree of sunlight contact is not normal and a highly accurate test cannot be performed.

Further, since this test is carried out for a long period of time, such as several months to three years, it is necessary to monitor the bending and disengagement of the test piece at all times, so that a large amount of waste is required, and the test piece is also consumed. If you leave it without noticing the bending or disconnection, you can not confirm at what time the bending or disconnection occurred, so you will have to repeat the test and it will take a lot of time and cost. There is. In addition, since the production may be started depending on the result of the test, there is a problem in productivity if the test takes a long time due to the re-execution of the test.

There are various test pieces of various sizes. Then, as shown in FIG. 6, a plurality of test pieces 4 are sandwiched and fixed between the long sample mounting bars 2. Therefore, as shown in FIG. 7, for example, when the distance L1 between the sample mounting bars 2 is determined in accordance with the maximum size of the test piece, it becomes impossible to sandwich both ends of the small size test piece. There is a problem that test pieces of various sizes cannot be sandwiched between the same sample mounting bars, and the test apparatus cannot be effectively used.

Some test pieces are short-term exposed and others are long-term exposed. Therefore, as shown in FIG. 6, when a test piece having a different exposure period is sandwiched between the long sample mounting bars 2, in order to remove only the test piece exposed for a short period of time, the test piece is sandwiched by the sample mounting bars. All specimens must be removed and re-sandwiched for long-term exposure specimens. Therefore, there is a problem that extra work is required and the efficiency of the test is poor.

Further, in FIG. 6, when the test pieces 4 are sandwiched and fixed between all the sample mounting bars 2, the area receiving the wind pressure becomes L2 × L3, which is large, and the test pieces 4 having different thicknesses are used. When the test piece 4 is clamped by the long sample mounting bar 2, the test piece 4 cannot be clamped by a uniform clamping force.
The test piece 4 is easily pinched. When the test pieces are unclamped, the sample mounting bar 2 must be removed and re-clamped. Therefore, after all, the test pieces must also be unclamped, and all test pieces must be removed. There is a problem that it is necessary to redo the pinching of the piece.

The present invention strengthens the clamping of various test pieces, reduces the deflection and detachment of the test pieces, enables high-precision testing, and allows the test pieces to be partially attached and removed directly outdoors. It is intended to provide a test piece holder for an outdoor direct exposure test, which improves the efficiency of the exposure test and further eliminates the need to redo the test to improve the productivity.

[0011]

Means for solving the above problems are as follows from the description of claim 1 according to the present invention.
In a holder for a test piece for an outdoor exposure test for performing a weather resistance test in which a plurality of sample mounting bars are movably provided on a sample mounting frame and the test piece is held between the sample mounting bars,
The fixed base and the fixed chuck base of the fixed chuck are connected by a guide rod, a movable chuck is arranged between the fixed base and the fixed chuck, and the guide rod is penetrated through the movable chuck base of the movable chuck to be fixed. The holder is formed by screwing a screw rod rotatably supported on the base into a screw hole provided in the movable chuck base of the movable chuck.

Next, the means understood from the second aspect is characterized in that a plurality of guide rods are provided.

Next, the means grasped from the third aspect is to connect both sides of the fixed base and the fixed chuck with guide rods,
It is characterized in that a plurality of wires are provided between the guide rods so as to penetrate the movable chuck base of the movable chuck.

Next, the means to be grasped from the fourth aspect is characterized in that the chuck surfaces of the fixed chuck and the movable chuck are made uneven.

Next, a description will be given of how the problems can be solved by the invention understood from the above claims. In the present invention grasped from the description of claim 1, since the movable chuck that moves along the guide rod that connects the fixed base and the fixed chuck is provided, the test pieces of various sizes are provided between the fixed chuck and the movable chuck. It can be clamped in. Since the screw rod rotatably supported on the fixed table is screwed into the movable chuck table of the movable chuck, it is possible to hold the test piece sandwiched between the fixed chuck and the movable chuck under tension. Therefore, it is possible to enable a test according to the usage state of the material used under tension. Further, by keeping the distance between the fixed base and the fixed chuck constant, the distance between the sample mounting bars is made constant, and the holders holding the test pieces of various sizes are held on the sample mounting bars. be able to.

Next, in the present invention as understood from the second aspect, by providing a plurality of guide rods, even if the end of the test piece comes off, the sagging of the test piece is caused by the guide rod in a long-term test. It can be held and exposed to sunlight at an angle close to a predetermined angle, and the test can be continued for a long time.

In the present invention as understood from the third aspect, both sides of the fixed base and the fixed chuck are connected by a guide rod, and a plurality of wires are penetrated through the movable chuck base of the movable chuck between the guide rods. By providing it, in the long-term test, even if the end of the test piece comes off, the sagging of the test piece is held by the guide rod and the wire, and the sun rays can be applied at an angle close to a predetermined angle. And,
The test can be continued for a long time.

Next, in the present invention as understood from the fourth aspect, by making the chuck surface uneven, the test piece can be firmly sandwiched and the sun rays can be applied at an appropriate angle. In addition, if the guide rod or the guide rod and wire are used to prevent the test piece from sagging, the sagging of the test piece may occur even if the end of the test piece comes off during a long-term test. It is held by a wire and can be exposed to sunlight at an angle close to a predetermined angle, and a long-term test can be continued.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention as understood from the description of the above claims will be described. In the present invention grasped from the description of claim 1, as shown in FIG. 4, a plurality of sample mounting bars 2 are movably provided on the sample mounting frame 3 and the test piece 4 is held between the sample mounting bars 2. 1 is a holder for an outdoor exposure test specimen for performing a weather resistance test as described above. As shown in FIG. 1, a fixed base 6 and a fixed chuck base 701 of a fixed chuck 7 are connected by a guide rod 8. Then, the movable chuck 9 is arranged between the fixed base 6 and the fixed chuck 7. Then, the guide rod 8 is passed through the movable chuck base 901 of the movable chuck 9, and the screw rod 10 rotatably supported by the fixed base 6 is screwed into a screw hole provided in the movable chuck base 901 of the movable chuck 9. Form a retainer.

Next, in the present invention understood from the second aspect, a plurality of guide rods 8 are provided.

Next, in the present invention grasped from the description of claim 3, as shown in FIG. 2, both sides of the fixed base 6 and the fixed chuck 7 are connected by the guide rods 8, and a plurality of guide rods 8 are provided between them. The wire 11 of the book is provided by penetrating the movable chuck base 901 of the movable chuck 9.

Next, in the present invention understood from the description of claim 4, the chuck surfaces 12 of the fixed chuck 7 and the movable chuck 9 shown in FIGS. 1 and 2 are made uneven as shown in FIG.

[0023]

An embodiment of the present invention will be described below. In FIG. 1, the fixed base 6 and the fixed chuck base 701 of the fixed chuck 7 are connected by a guide rod 8, and a movable chuck 9 is arranged between the fixed base 6 and the fixed chuck 7. Then, the guide rod 8 is passed through the movable chuck base 901 of the movable chuck 9, and the screw rod 10 rotatably supported by the fixed base 6 is screwed into a screw hole provided in the movable chuck base 901 of the movable chuck 9. Form a retainer. In this embodiment, four guide rods 8 are provided.

The fixed chuck 7 is provided with a fixed chuck presser 702 so as to fit on the fixed chuck base 701.
The chuck surface 12 of the fixed chuck base 701 and the fixed chuck retainer 702 has an uneven surface as shown in FIG.
Similarly, the movable chuck 9 is also provided with a movable chuck presser 902 so as to fit the movable chuck base 901.
The chuck surface 12 of 02 is also an uneven surface as shown in FIG.

Implant bolts 13 are provided on the chuck surfaces 12 of the fixed chuck base 701 and the movable chuck base 901. The implant bolts 13 are inserted into the holes formed in the fixed chuck presser 702 and the movable chuck presser 902. Then, the wing nut 14 is used for fastening. Also,
The screw rod 10 is provided with a knob 15, and this knob 15
By turning, the movable chuck 9 is guided by the guide rod 8 and moved in the direction of arrow (a).

A locking portion 16 is provided on the side surface of the fixed base 6,
On the other hand, an engaging portion 17 is provided on the side surface of the fixed chuck base 701. In the embodiment shown in FIG. 2, a wire 11 is provided on a part of the guide rod 8 of the embodiment shown in FIG.
One end of 11 is fixed to the fixed base 6 and the other end is fixed to the fixed chuck base 701, and the movable chuck base 901 is penetrated. The other parts are the same as those of the embodiment shown in FIG. 1, and the same parts are denoted by the same reference numerals and description thereof will be omitted. In addition, fixed allowance 6, fixed chuck 7, movable chuck 9, guide rod 8, wire 11, screw rod 10, stud bolt
13 is made of corrosion-resistant material to withstand long-term tests.

The operation of the present embodiment configured as described above will be described below. 1 and 2, the fixed base 6
Since the movable chuck 9 that moves along the guide rod 8 that connects the fixed chuck 7 and the fixed chuck 7 is provided, the distance between the fixed chuck 7 and the movable chuck 9 can be freely adjusted, and tests of various sizes can be performed. The piece 4 can be sandwiched between the fixed chuck 7 and the movable chuck 9.

Since the screw rod 10 rotatably supported on the fixed base 6 is screwed into the movable chuck base 901 of the movable chuck 9, the test piece 4 held between the fixed chuck 7 and the movable chuck 9 is attached. It can be held under tension and can allow testing in line with the condition of use of the material used under tension. Further, by keeping the distance dimension between the fixed base 6 and the fixed chuck 7 constant, as shown in FIG.
With L4 kept constant, the holder holding the test pieces 4 of various sizes can be held on the sample mounting bar 2.
It is possible to easily hold the holder on the sample and remove the holder from the sample mounting bar 2.

Further, as shown in FIG. 5, the engaging portion 17 is engaged with the sample mounting bar 2, the locking portion 16 is locked with the sample mounting bar 201, and the holder is mounted to mount the sample mounting bar 2 And 2
Insert the sample mounting bar 2 and
You can attach a holder with 201 fixed,
The test pieces 4 having different exposure periods can be removed in units of holders, and the holders can be opened to improve ventilation and reduce the air pressure.

Further, by providing a plurality of guide rods 8, even if the end portion of the test piece 4 is disengaged in the long-term test, the sagging of the test piece 4 is held by the guide rods 8 and a predetermined angle is maintained. The sunlight can be applied at a close angle, and the test can be continued for a long time. Also,
As shown in FIG. 2, both sides of the fixed base 6 and the fixed chuck 7 are connected by a guide rod 8, and a plurality of wires 11 are provided between the guide rods 8.
By penetrating through the movable chuck base 901 of the movable chuck 9, even if the end of the test piece 4 is detached in the long-term test, the sagging of the test piece is held by the guide rod 8 and the wire 11, Sun rays can be applied at an angle close to a predetermined angle, and a long-term test can be continued.

Further, as shown in FIG. 3, by making the chuck surface 12 an uneven surface, the test piece 4 can be firmly sandwiched, the sun rays can be applied at an appropriate angle, and the guide rod 8 can be applied. Alternatively, in the case where the sagging of the test piece 4 is prevented by the guide rod 8 and the wire 11, even if the end of the test piece 4 comes off in the long-term test, the sagging of the test piece 4 may be caused by the guide rod 8 or Guide rod 8 and wire
It is held by 11 so that it can be exposed to sunlight at an angle close to a predetermined angle and the test can be continued for a long time. Further, since the test piece 4 may be clamped by the fixed chuck retainer 702 and the movable chuck retainer 902 with the simple wing nut 14, even if the clamp of the test specimen 4 is removed, the clamping can be easily redone. .

[0032]

As described above, according to the present invention, which can be understood from the detailed description of the invention based on the description of claim 1, it moves along the guide rod that connects the fixed base and the fixed chuck. Since a movable chuck is provided and test pieces of various sizes can be sandwiched between the fixed chuck and the movable chuck, it is possible to easily attach and detach the test pieces for each holder, thus improving work efficiency. be able to.

Then, a screw rod rotatably supported by the fixed base is screwed into the movable chuck base of the movable chuck, and the test piece held between the fixed chuck and the movable chuck is held under tension, Since it is possible to perform a test in accordance with the usage state of the material used under tension, it is possible to perform a highly accurate test.

Further, since it is possible to hold the holder on the sample mounting bar by keeping the distance between the fixed base and the fixed chuck constant and the distance between the sample mounting bars fixed, The holding tool can be easily held and the holding tool can be easily detached from the sample mounting bar, and the work can be facilitated.

According to the present invention, which is understood from the detailed description of the invention based on the second aspect, a plurality of guide rods are provided, and the end of the test piece comes off during a long-term test. Also, the sagging of the test piece is held by the guide rod, it is possible to apply the sun rays at an angle close to the predetermined angle, and it is possible to perform a highly accurate test and continue the long-term test. Thus, it is possible to improve the efficiency of the test by eliminating the work of re-testing and the work of monitoring the condition of the test piece.

According to the present invention understood from the detailed description of the invention based on the third aspect, both sides of the fixed base and the fixed chuck are connected by guide rods, and a plurality of guide rods are provided between the guide rods. This wire is installed through the movable chuck base of the movable chuck, and in the long-term test, even if the end of the test piece comes off, the sagging of the test piece is held by the guide rod and the wire, and it is close to the predetermined angle. It is possible to irradiate sunlight at an angle and perform a highly accurate test, and it is possible to continue the test for a long time, eliminating the work of redoing the test and monitoring the condition of the test piece, The efficiency of can be improved.

Next, according to the present invention, which can be understood from the detailed description of the invention based on the description of claim 4, the chuck surface is formed into an uneven surface, the test piece is firmly sandwiched, and the sun is rotated at an appropriate angle. A high-precision test can be performed by applying a light beam, and if the guide bar or guide bar and wire are used to prevent the test piece from sagging, even if the end of the test piece is Even if it comes off, the sagging of the test piece is held by the guide rod or the guide rod and the wire, and the sunlight can be applied at an angle close to the predetermined angle, and it is possible to perform a highly accurate test and for a long period of time. The test can be continued, and the work of redoing the test and the work of monitoring the condition of the test piece can be eliminated, and the efficiency of the test can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing another embodiment of the present invention.

FIG. 3 is a plan view of a holding surface in FIGS. 1 and 2.

FIG. 4 is a perspective view showing a state in which the holder shown in FIG. 1 or 2 is attached to an outdoor direct exposure test bench.

5 is a side view showing the relationship between the sample mounting bar and the holder in FIG.

FIG. 6 is a perspective view of a conventional outdoor direct exposure test table.

FIG. 7 is an explanatory view showing a side view of a state where the test piece is sandwiched between the sample mounting bars in FIG.

[Description of sign]

 4 Test piece 6 Fixed base 7 Fixed chuck 701 Fixed chuck base 702 Fixed chuck presser 8 Guide rod 9 Movable chuck 901 Movable chuck base 902 Movable chuck presser 10 Screw rod 11 Wire 12 Chuck surface

Claims (4)

[Claims] 1. Holding a test piece for an outdoor exposure test for performing a weather resistance test in which a plurality of sample mounting bars are movably provided on a sample mounting frame and the test piece is held between the sample mounting bars. In the tool, the fixed base and the fixed chuck base of the fixed chuck are connected by a guide rod, a movable chuck is disposed between the fixed base and the fixed chuck, and the guide rod is penetrated through the movable chuck base of the movable chuck. Then, the test piece holder for outdoor direct exposure test is characterized in that the holder is formed by screwing a screw rod rotatably supported on the fixed base into a screw hole provided in the movable chuck base of the movable chuck. 2. The test piece holder for an outdoor direct exposure test according to claim 1, wherein a plurality of guide rods are provided. 3. The fixed base and the fixed chuck are connected to both sides by guide rods, and a plurality of wires are provided between the guide rods so as to penetrate the movable chuck base of the movable chuck. A test piece holder for the outdoor direct exposure test described. 4. The test piece holder for an outdoor direct exposure test according to claim 1, wherein the chuck surfaces of the fixed chuck and the movable chuck are uneven surfaces.