JPH0723266U - Test piece carrier - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a test piece carrying device which does not need to change the direction of the test piece, has a simple structure, is inexpensive, and facilitates the carrying. [Constitution] The test strip carrying apparatus of the present invention is provided with a carrying amount measuring mechanism for measuring the carrying amount in the carrying mechanism and a position for measuring the size of the test piece in the middle of the carrying process. The width or thickness of the test piece is measured from the measured value of the test piece transportation amount to the dimension measurement position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for transporting a test piece from a supply position to a test position, and more particularly to an apparatus for automatically transporting a test piece from one side of the supply section to the test position. .

[0002]

[Prior art]

 This type of transfer device was developed as part of a so-called automatic tester that automatically transfers the test piece from the position of the supply section to the test position, and also performs the test automatically. When performing a bending test on a test piece automatically, there is provided a transfer device that pushes out the test pieces stored in a storage part such as a magazine one by one from the lowermost part and transfers them to the bending test position.

In this case, because of the automatic test, the dimensions such as the thickness and width of the test piece are measured during the transportation process. Two width measuring instruments and a thickness measuring instrument were installed side by side. Moreover, since the measurement directions of width and thickness differ by 90 degrees, the measurement direction of each measuring instrument is changed. In the method in which the measuring directions of the measuring instruments are the same, a mechanism for changing the direction of the conveyed test piece between the measuring instruments is installed.

[0004]

[Problems to be solved by the device]

 If the measuring instrument is installed with the measuring direction changed, two measuring instruments are required, and it is inevitable to make the device large. Further, in the method of changing the direction of the test piece, the changing mechanism is required, which complicates the transportation device and easily causes a failure. There were various problems in maintenance.

The present invention provides a test strip carrying device that solves the above-mentioned problems.

[0006]

[Means for Solving the Problems]

 The test strip transporting device provided by this invention is a device that transports a test strip from one side to a test position by pushing out a test strip from the supply side. A position for measuring the size of the test piece is installed in the middle of the transfer process, and the width or thickness of the test piece is measured from the measured value of the transfer amount of the test piece from the supply position to the dimension measurement position. Is. For example, if the width of the test piece is to be measured from the measured value of the test piece transportation amount, only the thickness measuring instrument should be installed.

[0007]

[Action]

 According to the test strip transporting device provided by the present invention, the transport mechanism itself measures the width or thickness of the test strip, and the installation of either one of the measuring devices can be omitted.

[0008]

【Example】

 The present invention will be described below with reference to the embodiments shown in the drawings. The structure of the test strip carrying device provided by this invention is as shown in FIG. FIG. 1 is a perspective view showing the appearance of a test piece transporting device in an automatic bending tester. The test pieces 1 are vertically stacked and stored in a storage container, that is, a magazine 2 installed at a predetermined position. The magazine 2 has an open bottom, and the lowest test piece 1 is mounted on the upper surfaces of the guide rods 14 arranged in parallel. Then, the lowest test piece 1 is pushed rightward by the test piece pushing jig 13 moving from the left side. When the test piece pushing jig 13 that has returned to the left moves to the rear of the magazine 2, the lowest test piece in the magazine 2 descends and is mounted on the upper surfaces of the guide rods 14 and 14 again. In this way, the test pieces 1 stacked and stored in the magazine 2 are sequentially sent out (dropped) downward and supplied for transportation.

The test piece pushing jig 13 is set such that the upper surface thereof is about the thickness of the test piece 1 from the upper surfaces of the guide rods 14 and 14 on which the upper surfaces thereof are juxtaposed. It is integrally attached to the right end of the movable body 12 set so as to coincide with the upper surface of the jig 13. On the other hand, a ball screw rod 8 is rotatably installed between the guide rods 14, 14 arranged side by side in parallel with the guide rods 14, 14 by means of both supporting members 10, 11. The movable body 12 is screwed onto the ball screw rod 8 and functions as a nut for the ball screw rod 8 and is moved left and right by the rotational driving of the ball screw rod 8. A rotary encoder 9 is provided between the ball rod 8 and the support 10 at the left end thereof to measure the amount of movement of the movable body 12, that is, the test piece pushing jig 13. The rotary encoder 9 can measure the movement amount in units of 1/100 mm, for example. The rotation of the ball screw rod 8 is performed by the electric motor 3. The output shaft of the electric motor 3 is transmitted to the pulley 5 via the slip mechanism 4, and the pulley 7 is rotated via the belt 6. The slip mechanism 4 is provided to limit the rotation transmission force to the ball screw rod 8 to a certain value or less. In this way, the ball rod 8 is driven to rotate, which is converted into a linear motion by the movable body 12 and the test piece pushing jig 13 moves laterally.

The test piece 1 sent out by the rightward movement of the test piece pushing jig 13 is subjected to dimension measurement until it reaches the bending test position where the support base 24 is installed. Two lifting frames 20 and 22 are installed on the way. The elevating frame 20 is moved up and down by an elevating mechanism 21, and a stopper 15 is projectingly provided at the tip end thereof in the moving direction of the test piece pushing jig 13. Then, when the test piece 1 is conveyed from the left side, the elevating frame 20 is moved downward by the elevating mechanism 21 so that the stopper 15 is positioned between the guide rods 14 and 14 at the upper surface position thereof. When the test piece 1 comes into contact with the stopper 15, the slip mechanism 4 operates and the rotation output of the electric motor 3 is cut off from the ball screw rod 8. The width dimension of the test piece 1 is measured by this operation, and then the elevating frame 20 is elevated by the elevating mechanism 21. Then, the rotation driving of the ball screw rod 8 is restarted, and the test piece 1 is moved to the right by the test piece pushing jig 13. Then, the conveyance is stopped at the positions of the upper and lower spindles 16 and 17 in the thickness measuring position. The upper spindle 16 is installed on an elevating frame 22 which is moved up and down by an elevating mechanism 23, while the lower spindle 17 is moved up and down by an elevating table 26. The lower spindle 17 is adjusted by an elevating table 26 so that its upper end surface is aligned with the upper surfaces of the guide rods 14, 14. Therefore, when the test piece 1 is conveyed to this position, it functions as a lower fixed surface for measuring the thickness. Then, when the upper spindle 16 is lowered by the elevating mechanism 23 and the lower end thereof comes into contact with the upper surface of the test piece 1, the thickness dimension of the test piece 1 is measured from the amount of the lowering. This measurement is performed by a measuring mechanism (not shown) installed inside the elevating mechanism 23, for example, in units of 1/1000 mm. As the principle of the measuring mechanism, a differential transformer method or a magnetic scale method is adopted. After the measurement, the test piece 1 is further moved to the right by the test piece pushing jig 13 and conveyed to the test position. The test piece 1 is supported on both support bases 24 in a both-supported (span) state. Then, a bending test is performed by a punch (not shown in FIG. 1) from above. After the test is completed, the post-test test pieces located on both post-test support 24 are dropped from both support stand 24 positions by the test piece push-out jig 13 moving further to the right by a small amount. After the test, the test pieces are stored in a storage container (not shown) below. The length of the ball screw rod 8 is set so that the test piece pushing jig 13 can be moved rightward by a small amount. After that, the test piece pushing jig 13 is returned to the left by the reverse rotation drive of the ball screw rod 8. Reference numeral 19 is a drive device for driving and controlling each of the above-described transport functions.

The following measures have been taken in these configurations. For example, the moving direction length of the movable body 12 is such that the rear end of the movable body 12 is at the bottom position of the magazine 2 even when the test piece 1 is conveyed to the test position by the test piece pushing jig 13. As a result, the movable body 12 is smoothly moved to the left and right, and the test piece pushing-out jig 13 performs the test piece pushing-out operation one by one. Further, since the lower spindle 17 is required for thickness measurement, the thickness measuring spindle position is deviated from the position of the ball screw rod 8 so that the installation of the ball screw rod 8 and the lower spindle 17 do not interfere with each other. ing. Therefore, the lifting frame 22 is set longer than the lifting frame 20. The lower spindle 17 does not interfere with the movement of the movable body 12. Output signals from the measuring mechanism installed inside the rotary encoder 9 and the elevating mechanism 23 are guided to the drive device 19, and the rotation drive control of the electric motor 3 is also controlled by the control mechanism in the drive device 19. . The measured size of the test piece 1 is displayed on a display device or a recorder (both not shown) installed separately, or is input to a computer (not shown).

Now, in the above-mentioned configuration, the dimension measurement order of the test piece 1 will be described with reference to the operation explanatory diagram shown in FIG.

As is apparent from the figure, the test piece 1 is sequentially conveyed from the supply position A of the magazine to the measurement position B for width measurement, the measurement position C for thickness measurement, and further to the test position D. In this case, the rotary encoder 9 measures the rightward movement amount of the test piece pushing jig 13 from the position A where the test piece pushing jig 13 is in contact with the test piece 1. Then, the rotary encoder 9 measures the movement amount (test piece conveyance amount) L2 until the test piece 1 comes into contact with the stopper 15 (position B). Since this distance is L1 when there is no test piece, the width (W) of the test piece 1 is measured by L1-L2 = W. Next, the test piece 1 is conveyed rightward by the test piece pushing jig 13, but at the next thickness measurement position, the electric motor 3 is arranged so that the spindles 16 and 17 are positioned at the width center position of the test piece 1. The rotation drive control of is performed. At this time, the moving amount is controlled while being measured by the rotary encoder 9, but the test piece pushing jig 13 is moved by the distance L4. This movement amount L4 has the following relationship with the known distance L3 from the stopper 15 (position B) to the thickness measurement position (C). L4 = W + L3-1 / 2W = L3 + 1 / 2W. Thus, the thickness of the test piece 1 can be accurately measured. After this dimension measurement, the test piece 1 is subjected to a bending test by the punch 26 at the test position (D). In FIG. 2, only the bending test position is shown by changing the direction by 90 degrees.

The test strip transporting device provided by the present invention is as described above, but is not limited to the examples shown above and includes various modified examples. First, the test mechanism is not limited to the bending tester, but can be applied to various testers such as a tensile test and a compression test. In the illustrated example, the width measurement is measured by the transport amount of the test piece, but the thickness measurement may be measured by the transport amount of the test piece. The example of the magazine is used as the supply unit for the test pieces, but other supply mechanisms that supply one by one are also limited to the configuration of the supply mechanism as long as the starting point of the transport amount measurement is clear. Not a thing. Even when a magazine is used as the supply mechanism, its shape is not limited to the illustrated example. Further, in the illustrated example, the measurement of the carry amount is performed by the rotary encoder 9, but it is also possible to use a mechanism for directly measuring the linear movement amount of the test piece pushing jig or the like. The guide mechanism also changes depending on the shape and size of the test piece, and is not limited to the configuration of the inner rod shown in the drawing. Specific equipment for width measurement and thickness measurement may be changed depending on the shape and size of the test piece, and is not limited to the illustrated example. The slip mechanism is for maintaining a constant clamping force in the dimension measurement of the test piece, and can be interposed not in the pulley but also in the ball screw rod 8 in the apparatus shown in the drawing. This invention includes all of these variations.

[0015]

[Effect of device]

 Since the test piece transporting device provided by the present invention is as described above, it is possible to omit either the width measurement or the thickness measurement of the mechanism for measuring the size of the test piece performed during the transportation process. By simplifying the process, the test piece can be transported efficiently, and a compact and lightweight transporting device with few troubles and economically inexpensive is provided. It can be effectively applied to automated testers and is useful for improving its performance.

[Brief description of drawings]

FIG. 1 is a perspective view showing the external appearance of a test strip carrying apparatus according to the present invention.

FIG. 2 is a view for explaining the operation of the test strip carrying device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Test piece 2 ... Magazine 4 ... Slip mechanism 8 ... Ball screw rod 9 ... Rotary encoder 13 ... Test piece pushing jig 14 ... Guide rod 15 ... Stopper 16,17 ... Spindle 19 ... Drive device 20,22 ... Elevating frame 21, 23 ... Lifting mechanism

Claims (1)

[Scope of utility model registration request] 1. An apparatus for transporting a test piece from one side to a test position by pushing it out from one side thereof, wherein a transport amount measuring mechanism for measuring the transport amount is installed in a transport mechanism and the test strip is provided in the middle of a transport stroke. The test piece conveyance is characterized in that a position for measuring the dimension of the test piece is set, and the width or thickness of the test piece is measured from the measured value of the test piece conveyance amount from the position of the supply portion to the dimension measurement position. apparatus.