JP2000352551A - Method and apparatus for tensile test of filmlike test piece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for the tensile test of a filmlike test piece which is not stiff, which is not self-sustaining, which is easy to curl, which is lightweight, which is easy to scatter and which has a physical property that the test piece is chucked and cut when the test piece is pulled in the case of a rectangular filmlike test piece. SOLUTION: This method and this apparatus for the tensile test of a filmlike test piece are constituted in such a way that the length of the test piece 10 is set at a length which includes removal-piece gripping parts 5 protruding to both sides from a chuck, that both end parts are held by, and arranged on, a tray 1 so as to be separable, that both sides of the test piece 10 are gripped on the inner side from test-piece holding parts 4 on the tray so as to be separated, that the test piece is conveyed to the chuck, that both sides of the test piece 10 are sandwiched by the chuck on the inner side of test-piece gripping members 7, 8 and that the test piece is removed after a test by holding the test-piece dripping parts 5 protruding to both sides from the chuck.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for tensile testing a film-shaped test piece.

[0002]

2. Description of the Related Art Conventionally, a test piece made of a thick rubber or plastic sheet is easy to handle because of its firm shape. For example, a test can be performed without providing a special holding means on a test piece tray. The pieces can be easily placed in an aligned state, there are few scratches and wrinkles due to handling, and it is easy to handle by suctioning with a vacuum pad or the like.

[0003]

However, a film-like test having physical properties such as a weak waist and lack of independence, easy to curl, light weight and easy to scatter, and in the case of a strip-like form, such as tearing of the chuck by pulling. For example, as shown in FIG. 8, when sucked by the vacuum pad 40 or the like, the test piece 10 is sucked into the inside of the pad 40 as shown in FIG. Even if it can be done, the non-sucking parts will hang down, making handling difficult. In the case of automation, many specimens must be stocked, but some films are curled from the beginning, and the specimen itself is light,
Since there is a possibility of displacement due to vibration, wind, etc., it cannot be simply placed at a predetermined position and handling is difficult.

Further, in the case of a dumbbell-shaped test piece made of rubber, plastic, or the like, the width of the ears at both ends to be gripped by the chuck is wide. Since the entire width is the same, the probability of chuck breakage increases, and in the case of chuck breakage, it becomes difficult to remove and clean the test piece gripped by the chuck having a broken chuck. In addition, when holding the test piece on the tray in some way and sucking and picking the film-like test piece with the vacuum pad, it is necessary to release the holding after sucking the test piece with the vacuum pad. The setting of the timing and strength of the opening means becomes delicate, and the structure becomes complicated. As described above, if the test piece itself is scratched or wrinkled due to handling, the test result may be affected, but it is needless to say that the test piece may be gripped by a mechanical pick arm other than the air cylinder. The present invention is intended to solve the above various problems.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention sets the length of a test piece to a length including a removal piece protruding from both sides of a chuck and arranges the test piece with both ends detachably held on a tray. , A test piece is gripped inside the test piece holding part on the tray, detached from the tray, transported to the chuck, and the test piece is clamped by the chuck inside the test piece holding member. It provides a test method. Since the test piece is gripped on both sides of the chuck and clamped by the chuck, for example, the test piece holding part on the tray or the test piece gripping member that grips and detaches the test piece from the tray may have looseness, scratches, wrinkles, etc. Even if the test piece is pulled by the chuck and subjected to the tensile test, the test piece is located inside the test piece, so that the test result is not adversely affected by the handling of the test piece.

Further, according to the present invention, there is provided a tensile test method for a film-like test piece according to claim 1, wherein the test piece sandwiched by the chuck is removed by holding the removal piece portion projecting from the chuck to both sides after the test. Is provided.
According to the present invention, after the test, even if the chuck is cut, the test piece can be removed from the chuck and cleaned by holding the removal piece portions protruding on both sides of the chuck.

Further, according to the present invention, in the tensile test method for a film-like test piece according to claim 1 or 2, the test piece is gripped inside the test piece holding portion on the tray and above the holding portion. A tensile test method for a film-shaped test piece, wherein the test piece is detached from a tray. By holding the test piece inside the test piece holding part on the tray and above the holding part and detaching it from the tray,
Even when the test piece is held loose on the tray, it can be removed from the tray by holding the test piece in a state where it is loosened and taut. Can be pinched.

Further, the present invention provides a tray having a test piece holding portion for releasably holding both ends of a test piece whose length is set to include a removal piece portion protruding to both sides from the chuck, and a tray. A test piece transport mechanism that grips the test piece inside the upper test piece holding part, detaches it from the tray, transports it to the chuck, and clamps the test piece inside the chuck inside the test piece gripping member A tensile test apparatus is provided. The test piece set to the length including the removal piece part protruding to both sides from the chuck, by the test piece transport mechanism,
Since the gripper is gripped on both sides of the chuck and clamped by the chuck, even if the test piece gripping member that grips and removes the test piece from the test piece holder on the tray or the tray has looseness, scratches, wrinkles, etc. Since the test piece portion subjected to the tensile test by being pulled by the chuck is located inside the test piece portion, no adverse effect due to the handling of the test piece is given to the test result.

According to the present invention, there is provided a film-shaped test piece tensile test apparatus according to claim 4, wherein a positioning notch hole for accommodating a joint piece of the test piece is provided at the center of the tray. An object of the present invention is to provide a tensile test device for a test piece in a shape. . The positioning notch is convenient for positioning the center of the test piece and smoothly extending the test piece to the tray surface when the test piece having the joint portion is stretched on the tray. Further, according to the present invention, in the tensile test apparatus for a film-shaped test piece according to claim 4 or 5, a test for removing the test piece held by the chuck after the test by holding the removal piece portion protruding to both sides from the chuck. An object of the present invention is to provide a tensile test apparatus for a film-like test piece, comprising a piece removing mechanism. Even if the chuck is cut off after the test, the test strip removing mechanism can remove and clean the test strip from the chuck by holding the strips protruding on both sides of the chuck. According to the present invention, in the tensile test apparatus for a film-like test piece according to claim 4, 5 or 6, a relief space in which a test piece gripping member and a test piece removing member can be inserted is provided on both sides of the chuck. An object of the present invention is to provide a tensile test apparatus for a film-shaped test piece.

[0010] By providing a clearance space on both sides of the chuck in which a test piece gripping member and a test piece removing member can be inserted,
The test piece can be attached to the chuck without damaging the test piece by holding both sides of the test piece by the test piece holding member.
After the test, the test piece held by the chuck can be removed by being gripped in the escape space by the test piece removing member. According to the present invention, in the tensile test apparatus for a film-like test piece according to any one of claims 4 to 7, the test piece is held inside the test piece holding portion on the tray and above the holding portion. And a tensile test apparatus for a film-shaped test piece provided with a test piece transport mechanism for detaching from a tray. Even if the test piece is held loose on the tray by gripping the test piece inside and above the holding part on the tray and detaching it from the tray, The test piece can be detached from the tray by holding the test piece in a state where the test piece is pulled and tightened, and as a result, the test piece can be held by the chuck without slack.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in the drawings. In FIGS. 1 to 3, reference numeral 1 denotes a tray provided to be movable leftward in the figure,
The both ends of the strip-shaped test piece 10 having the following are held detachably by the test piece holding portion 4 made of a leaf spring or the like.
The test piece holding member 4 is not limited to a leaf spring, but may be a magnet, a vacuum pad, static electricity, an adhesive, a patch, a paperweight, a weight, etc., or any other conventionally known holding means such as a mechanical holding member. Can be configured. The length of the test piece 10 is set to a length including the removal piece portions 5 protruding on both sides such as up and down or right and left from a pair of two chucks at the mounting position before the test.

In the case of the embodiment, the test piece holder 4 of the tray 1
Inside the pair, two pairs of pick holes 6 along the moving direction.
Is provided. In the pick hole 6, two openable / closable pick pieces 7, 8 of the test piece transport mechanism of the present invention can be inserted. Thus, the movable pick piece 8 having the lower non-slip member 9 is configured to move upward. At the position shown in FIG. 2, the tray 1 is moved leftward by one specimen.
When the test piece 10 enters between the pick pieces 7 and 8, the lower movable pick piece 8 moves upward to grip the test piece 10, and detaches from the test piece holding portion 4 in a state where the test piece 10 is taut. Will be done. In this embodiment, the tray 1 is moved with respect to the pick pieces 7 and 8. However, basically, the tray 1 only needs to move relatively, so that the pick pieces 7 and 8 move for gripping the test piece. Of course, it is also possible. 2
Is a positioning notch hole for accommodating the joint piece 3 of the test piece 10 provided at the center of the tray 1 as shown in FIG.
When the test piece 10 having the joint 3 is stretched on the tray 1, the positioning notch hole 3 is convenient for centering the test piece and smoothly stretching the test piece on the tray surface. Joining piece 3
It is not always necessary for the test piece 10 having no sample.
Reference numeral 11 denotes a hardness test hole of the test piece 10 for using the tray 1 for other uses other than the tensile test. Reference numeral 12 denotes a mounting member for placing the test piece holding portion 4 made of a leaf spring on the tray 1 by providing a holding spring elasticity.

As described above, the test piece holder 4 is not limited to a leaf spring, but may be a test such as an air cylinder press, a magnet, a vacuum pad, static electricity, a temporary adhesive, a temporary adhesive, a paperweight, a weight, and the like. When the piece 10 is gripped and lifted by the pick pieces 7 and 8, the test piece 10 may be configured to come off spontaneously while sliding against the holding force, or the pick pieces 7 and 8 may be mechanically gripped. It is also possible to adopt a configuration in which the test piece is opened in synchronization with the lifting time. In addition, as the test piece gripping member of the test piece transport mechanism, instead of the pick pieces 7 and 8, a suction vacuum pad, a temporary attaching portion, an electrostatic attaching means,
Various test piece holding means such as magnet holding means, mechanical paper holding means, and roller holding means can be employed. In the left imaginary line portion of the embodiment of FIG. 4, the fixed pick piece 7 is integrated with the tip end of the guide member 16 fixed to the flange portion 15 of the air cylinder 14 and the pick arm 3.
3 is attached to a fixed frame 13 fixedly provided via a movable member 3, while the movable pick piece 8 is integrally provided via a pick arm 34 to an elevating member 17 which moves up and down by an air cylinder 14. The movable pick piece 8 rises from the lower outer side to the fixed pick piece 7 located above 1 and the film-like test piece 10 is pulled upward against the holding force of the test piece holding section 4. It is configured so that it can be gripped.

4, the mounting plate 19 of the air cylinder 14 is provided integrally with a horizontally extending rotating bar 18, and the rotating bar 18 is provided with a vertically extending rotating bar 22 provided with a rotating drive mechanism. 20 horizontal rotating parts 2
It is biased to 1 and attached integrally. The rotating shaft 21 is simultaneously moved from the horizontal position shown by the imaginary line where the pick pieces 7 and 8 face the tray 1 in FIG. 4 to the horizontal position where the swivel bar 22 shown by the solid line is rotated clockwise by 90 ° and becomes horizontal. 9 clockwise
It is configured to be rotated by the rotation drive mechanism 20 at a position where it rotates by 0 °. The turning bar 22 is moved from the vertical position indicated by the imaginary line by the turning drive mechanism 25 specified in FIG.
The turning member 24 turns clockwise around the rotation center axis 23 to a position indicated by a solid line by 90 ° and is provided integrally with the turning member 24 that returns. The turning drive mechanism 25 of the turning member 24 is horizontally fixed to a support member 26 that is vertically set up on a moving member 27 that reciprocates from a broken line position to a solid line position with respect to the body 29 via a guide frame member 28, 5 and 6, the vertically oriented pick pieces 7 and 8 are mounted on the chuck base 30 located at the test piece mounting position of the tensile tester, while being moved to the position indicated by the solid line. Upper and lower two 1
The pair of chucks 31 and 32 are configured to be positioned in parallel with the center.

At this time, a clearance space 35 is provided in each of the chuck bases 30 on both sides of the chucks 31 and 32, and the pick pieces 7 and 8 holding the film-shaped test piece 10 are inserted into the clearance spaces 35. In this state, the chucks 31 and 32 can clamp the inner portion of the test piece 10. Accordingly, the test pieces held by the pick pieces 7, 8 holding the test piece 10 are also chucks 31, 3.
2 are located on both sides, and thus constitute the removal piece portion 5 of the present invention. Here, the pick pieces 7 and 8
As shown in a solid line position in FIG.
4 is provided so as to project from the chuck base 30 in the direction of the clearance space 35 of the chuck base 30, whereby the pick pieces 7, 8 holding the film-shaped test piece 10 are inserted into the clearance space 35. is there. In addition, in order to confirm that the joint 3 of the test piece 10 is located at the center of the chucks 31 and 32, the test piece 10 is located at the center of the chucks 31 and 32 and advanced from the side. The position of the joint 3 is confirmed by holding the joint 3 by opening and closing as shown in FIG.
After the confirmation, there are provided joint position confirmation members 46 and 47 for opening the joint 3 and retracting to the side. And chuck 3
After closing 1, 32, the pick pieces 7, 8 are opened by driving the air cylinder 14, and the pick arms 33, 34, etc. are returned from the position of the solid line in FIG.
The test piece 10 is gripped from the tray 1 and transported.

On the other hand, the chuck base 30 holding the test piece 10 between the chucks 31 and 32 is subjected to a tensile test, and the test piece 10 is generally cut by one of the chucks as shown in FIG. The process ends when the chuck has run out. In the case of FIG. 7, the test piece 10 is cut off by the lower chuck 32, but in this state, the present invention provides a cleaning hand separately provided in the clearance space 35 of the chuck base 30 after the completion of the tensile test. 36 and 37 are advanced to the vicinity of the chuck to grip the removed piece portion 5 of the test piece 10, open the chucks 31 and 32, and discard the test piece 10 from the escape space 35 to a predetermined external dust storage box or the like. It is configured in. In the case of the embodiment shown in FIG. 7, the test piece removing mechanism includes a guide member 41 fixed to the flange portion 39 of the air cylinder 38, similarly to the test piece gripping member of the test piece transport mechanism.
The movable cleaning hand 37 is attached via a cleaning arm 45 to an opening / closing member 44 which is opened / closed by an air cylinder 38, while being attached to a fixed frame 43 integrally fixedly provided at the end of the cleaning frame 43. It is provided integrally,
In the vicinity of the chucks 31 and 32, the movable-side cleaning hand 37 is closed by the fixed-side cleaning hand 36 to grip the removal piece portion 5 of the film-like test piece 10, retreat from the escape space 35, and move to the outside predetermined area. It is configured to be discarded in a garbage storage box or the like. In addition, as the test piece gripping member of the test piece removing mechanism, instead of the cleaning hands 36 and 37, a suction vacuum pad, a temporary attachment portion, an electrostatic attachment means, a magnet holding means,
Various test piece gripping means such as mechanical paper pinching means can be employed.

In the case of the embodiment, the cleaning hands 36 and 37 are
The removal piece portion 5 of the test piece 10 can be grasped and reliably discarded from the escape space 35 to a predetermined external trash container or the like,
Although there is an effect that the test end pieces are not scattered around the testing machine, instead of the cleaning hands 36 and 37 of the sandwich type, in addition to removing means such as vacuum suction type, electrostatic adhesion type, adhesive type, etc., air blowing type etc. Test strip removing means can be employed. Then, the chuck base 30 is placed at the test piece mounting position of the tensile tester.
Is returned, the next test piece 10 on the tray 1 is carried to the test piece transport mechanism having the pick pieces 7 and 8, and the escape space 3
Pick pieces 7, 8 holding film-shaped test piece 10 in 5
Is inserted, the chucks 31 and 32 are closed, and the test piece 10 is clamped. Then, the pick pieces 7 and 8 are opened by driving the air cylinder 14, and the pick arms 33 and 8 are moved from the position of the solid line in FIG. Then, the test piece 10 is gripped from the tray 1 and transported again.

[0018]

As described above, according to the tensile test method for a film-like test piece according to the present invention, the length of the test piece is set to the length including the removed pieces protruding to both sides from the chuck and the tray is set. The test piece is gripped inside the test piece holding part on the tray, detached from the tray, transported to the chuck, and the test piece is chucked inside the test piece holding part. Since the test piece is gripped on both sides of the chuck and held by the chuck by having a configuration for holding the test piece, for example, a test piece gripping member that holds and removes the test piece from the test piece holding portion on the tray or the tray Even if the test piece is loosened, scratched, or wrinkled, the test piece that is pulled by the chuck and subjected to the tensile test is located inside the test piece, so that the handling of the test piece does not adversely affect the test results. A.

Further, according to the present invention, in the tensile test method for a film-like test piece according to the first aspect, after the test, the test piece held by the chuck is removed by holding the removal piece portion projecting from the chuck to both sides. With the configuration, even if the chuck is cut after the test, there is an effect that the test piece can be easily removed and cleaned from the chuck by holding the removal piece portions protruding on both sides of the chuck. Further, the present invention provides the tensile test method for a film-shaped test piece according to claim 1 or 2, wherein the test piece is held inside the test piece holding portion on the tray and above the holding portion, and By having a detachable configuration, even when the test specimen is held in a state of slack on the tray,
The test piece can be detached from the tray by holding the test piece in a state where the slack is removed and the pin is taut, and as a result, there is an effect that the chuck can be clamped in a state where there is no slack.

Further, according to the tensile test apparatus for a film-like test piece of the present invention, both ends of the test piece whose length is set to the length including the removal piece portions projecting from both sides of the chuck can be detached. A tray having a test piece holding part to be held, and a test piece held inside the test piece holding part on the tray, detached from the tray, transported to the chuck, and clamped by the chuck inside the test piece holding member By having a configuration including a test piece transport mechanism, a test piece set to a length including a removal piece portion protruding to both sides from the chuck is gripped on both sides of the chuck by a test piece gripping member of the test piece transport mechanism. Even if there is looseness, scratches, wrinkles, etc. on the test piece gripping member that holds and removes the test piece from the test piece holding part on the tray or the tray,
Since the test piece portion subjected to the tensile test by being pulled by the chuck is located inside the test piece, there is an effect that the test result is not adversely affected by the handling of the test piece.

According to the present invention, there is provided a tensile test apparatus for a film-shaped test piece according to claim 4, wherein a positioning notch hole for accommodating a joint piece of the test piece is provided at the center of the tray. The positioning notch hole has an effect of accurately positioning the center of the test piece when the test piece having the joint is stretched on the tray. Further, according to the present invention, in the tensile test apparatus for a film-shaped test piece according to claim 4 or 5, a test for removing the test piece held by the chuck after the test by holding the removal piece portion protruding to both sides from the chuck. Due to the configuration having a piece removing mechanism, even if the chuck breaks after the test,
The test strip removing mechanism has an effect that the test strip can be removed from the chuck and cleaned by holding the strips protruding on both sides of the chuck. According to the present invention, there is provided a tensile test apparatus for a film-like test piece according to claim 4, 5 or 6, wherein a relief space in which a test piece gripping member and a test piece removing member can be inserted is provided on both sides of the chuck. By having the test piece, both sides of the test piece can be attached to the chuck by the test piece gripping member without damaging the test piece, and after the test, the test piece held by the chuck is removed. There is an effect that the member can be held and removed in the escape space by the member.

According to the present invention, there is provided a tensile test apparatus for a film-like test piece according to any one of claims 4 to 7,
The test piece has a slack on the tray by providing a test piece transport mechanism for holding the test piece inside the test piece holding portion on the tray and above the holding portion and detaching from the tray. Even when the test piece is held in a loose state, the test piece can be detached from the tray by holding the test piece in a state of being loosened and taut, and as a result, there is an effect that the chuck can be held by the chuck in a state without slack. .

[Brief description of the drawings]

FIG. 1 is a schematic plan view illustrating a usage mode of a main part of one embodiment of the present invention.

FIG. 2 is a partially longitudinal schematic front view illustrating the mode of use.

FIG. 3 is a schematic vertical side view partially illustrating a mode of use.

FIG. 4 is a partially longitudinal schematic front view illustrating another essential part of one embodiment of the present invention including a usage mode.

FIG. 5 is a partial vertical cross-sectional side view for explaining the usage mode.

FIG. 6 is a partially longitudinal schematic explanatory view illustrating a use mode of the main part.

FIG. 7 is a schematic vertical cross-sectional view illustrating a mode of use of the main part.

FIG. 8 is a schematic vertical cross-sectional view illustrating a mode of use of the main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tray 2 Positioning notch hole 3 Joint piece part 4 Test piece holding part 5 Removal piece part 6 Pick hole 7, 8 Pick piece (test piece gripping member) 9 Non-slip member 10 Test piece 11 Hardness test hole 12 Mounting member 13 Fixed frame 14 Air cylinder 15 Flange 16 Guide member 17 Elevating member 18 Rotating bar 19 Mounting plate 20 Rotating drive mechanism 21 Rotating shaft 22 Rotating shaft 23 Rotating center axis 24 Rotating shaft 25 Rotating driving mechanism 26 Support member 27 Moving member 28 Guide frame Member 29 Body 30 Chuck base 31, 32 Chuck 33, 34 Pick arm 35 Relief space 36, 37 Cleaning hand (test piece removing member) 38 Air cylinder 39 Flange part 40 Suction pad 41 Guide member 42 Cleaning arm 44 Opening / closing member 45 Cleaning Arm 46, 47 Joint position confirmation member

Claims (8)

[Claims] 1. A test piece holding portion on a tray, wherein a length of a test piece is set to a length including a removal piece portion protruding to both sides from a chuck, and both ends are detachably held on a tray. A tensile test method for a film-like test piece, comprising gripping both sides of a test piece at a further inner side, detaching from a tray, transporting the test piece to a chuck, and holding both sides of the test piece with a chuck inside the test piece gripping portion. 2. The method according to claim 1, wherein the test piece sandwiched by the chuck is removed by holding the removal piece portions projecting from the chuck to both sides after the test. Tensile test method for test specimens. 3. The tensile test method for a film-like test piece according to claim 1, wherein the test piece is held inside the test piece holding portion on the tray and above the test piece holding portion. A tensile test method for a film-like test piece, which is detached from a tray. 4. A tray having a test piece holding portion for removably holding both end portions of a test piece whose length is set to include a removal piece portion protruding from both sides of the chuck, and
A test piece transport mechanism that grips both sides of the test piece inside the test piece holding part on the tray, detaches from the tray, transports it to the chuck, and clamps both sides of the test piece with the chuck inside the test piece gripping part A tensile tester for film-like test pieces. 5. A tensile tester for a film-shaped test piece according to claim 4, wherein a positioning notch hole for accommodating a joint piece of the test piece is provided at a center of the tray. Tensile test equipment. It is. When the test piece 10 having the joint 3 is stretched on the tray 1, the positioning notch hole 3 is convenient for centering the test piece and smoothly stretching the test piece on the tray surface. 6. The test piece according to claim 4, wherein the test piece sandwiched between the chucks after the test is removed by holding the removal piece portions protruding from both sides of the chuck after the test. A tensile test apparatus for a film-like test piece, comprising a removing mechanism. 7. A tensile test apparatus for a film-like test piece according to claim 4, wherein a clearance space is provided on both sides of the chuck so that a test piece gripping member and a test piece removing member can be inserted. Tensile tester for film specimens. 8. The tensile test apparatus for a film-like test piece according to claim 4, wherein the test piece is gripped inside the test piece holding portion on the tray and above the holding portion. A tensile test apparatus for a film-shaped test piece, comprising a test piece transport mechanism detachable from a tray.