JP3189502B2 - Test piece transport device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test piece transporting device for sucking and holding a film-like test piece and transporting it to a tester main body.

[0002]

2. Description of the Related Art Conventionally, for example, in a fully automatic material testing apparatus, a test piece is conveyed to a test machine main body by a test piece conveying device and gripped by a gripper. In this state, the test machine main body is driven. To apply a load to the test piece. However, when the test piece is a film-like test piece having a weak stiffness, the end of the sucked test piece is bent by its own weight, and the gripping tool cannot accurately hold the test piece. For this reason, conventionally, when testing a film-shaped test piece, it was necessary to manually grip it with a gripper. SUMMARY OF THE INVENTION An object of the present invention is to provide a test piece transport device capable of accurately gripping a film-like test piece with a gripper.

[0003]

SUMMARY OF THE INVENTION The present invention is applied to a test piece transport apparatus for transporting a test piece to a test machine main body in a state where a film-like test piece is suction-held on a suction surface. Then, an air blowing mechanism for blowing air toward the end of the test piece is provided so that the end of the test piece to which the test piece is not adsorbed is substantially parallel to the suction surface, thereby solving the above problem. here,
The film-shaped test piece referred to in the present specification means a test piece made of a material that can be easily bent by its own weight, and includes, for example, a vinyl or paper-like test piece in addition to a general film.

[0004]

When the air blowing mechanism is operated to blow air in a direction substantially parallel to the suction surface, the non-adsorbed end of the test piece adsorbed on the suction surface has a posture substantially parallel to the suction surface. Become. That is, the test piece can be held in a state without bending.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of a test piece transport device according to the present invention, and FIG.
3 and 3 are sectional views taken along lines II-II and III-III of FIG. 1, respectively. The test piece transport device is a film-shaped test piece T
This is for sucking and holding P and transporting it to the grippers 21 and 22 of the material testing machine.
1 is provided with a plurality of intake holes 12. Each intake hole 1
Numerals 2 each communicate with an intake passage 13 provided in the transfer device main body 10, and the intake passage 13 is connected to a vacuum device 31 via a pipe 14. Air blow holes 15 are provided near the suction surface 11 on the upper and lower surfaces of the transfer device main body 10.
Are provided two by two, and each blowout hole 15 is provided in the main body 10.
Are connected to the air passages 16 provided therein. The air passage 16 is connected to a compressor 32 via an air passage 17 and a pipe 18.

In conducting a tensile test of the film-shaped test piece TP, first, the suction device 31 is driven to suction air from the suction hole 12 through the pipe 14 and the suction passage 13, and the central portion of the film-shaped test piece TP is conveyed. The suction is performed on the suction surface 11 of the apparatus main body 10. In this state, an actuator (not shown) is driven to move the main body 10 to the material testing machine side. Here, since the film-like test piece TP has a weak waist, for example, FIG.
As shown by a two-dot chain line, when the upper end of the portion to be sucked (the center portion) is bent by its own weight, or when the test piece TP is warped from the beginning, the lower end may be sucked in a bent state. is there. In such a bent state, the test piece TP is gripped by the gripping teeth 21 of the grippers 21 and 22.
a, 21b and 22a, 22b cannot be inserted and cannot be gripped by the grippers 21, 22.

Therefore, in the present embodiment, the compressor 32 is driven prior to gripping the test piece TP, and air is blown out from each blowout hole 15 through the pipe 18 and the air passage 17. Since the blown air is blown in a direction substantially parallel to the suction surface 11, even if the end of the test piece TP is bent in any direction, the bent air is corrected by the blown air, and the end of the tester as shown in the drawing. Are held substantially parallel to the suction surface 11. In this state, the transport device main body 10 is driven so that the upper and lower ends of the test piece TP are inserted between the gripping teeth 21a, 21b and 22a, 22b of the upper and lower grippers 21, 22, respectively. The parts are gripped by the grippers 21 and 22. Next, grippers 21 and 22
To perform a tensile test.

[0008] The number of air outlets is not limited to the embodiment.

[0009]

According to the present invention, the air is blown out in a direction substantially parallel to the suction surface of the test piece by the air blowing mechanism. The test piece can be securely held by the gripper.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a test piece transport device according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Test piece conveyance apparatus main body 11 Suction surface 12 Intake hole 13 Intake passage 14, 18 Piping 15 Air blowout hole 16, 17 Air passage 21, 22 Gripping tool 31 Suction device 32 Compressor

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-3761 (JP, A) JP-A-63-196419 (JP, A) JP-A-5-126705 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G01N 1/00-1/34 G01N 3/00-3/62 JICST file (JOIS)

Claims (1)

(57) [Claims] 1. A test piece transport device for transporting a test piece to a tester main body in a state where a film-shaped test piece is sucked and held on a suction face, wherein an end portion of the test piece that is not sucked is connected to the suction face. A test piece transport device comprising an air blowing mechanism for blowing air toward an end of a test piece so as to be in a substantially parallel posture.