JP3975744B2 - Viscoelasticity measuring device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a viscoelasticity measuring device for measuring physical properties of a viscoelastic material, and more particularly to a viscoelasticity measuring device provided with an automatic unloader.
[0002]
[Prior art]
Conventionally, to measure the viscoelasticity of a viscoelastic material, a sample of the material is sandwiched between two relatively rotatable measurement dies, rotational vibration is applied to one measurement die, and the other measurement die is applied. Devices that measure viscoelasticity by measuring the induced rotational torque are used. In this case, since the sample after measurement, particularly a sample made of a material having high adhesiveness, is strongly adhered to the two measurement dies, the method of simply grasping and peeling the sample completely completes because part of the sample remains on the measurement die. Separation is difficult, and a viscoelasticity measuring apparatus that measures viscoelasticity of a substance while automatically carrying out a sample containing such a material requires a special automatic conveyance machine.
[0003]
FIG. 8 shows a conventional example of a viscoelasticity measuring apparatus that can measure the viscoelasticity of a substance while automatically carrying out a material having strong adhesiveness. In this apparatus, films 95 and 96 such as non-adhesive polyester films are sent out by rollers 91 and 92 and rollers 93 and 94, and a sample S is sandwiched between the films 95 and 96, and between measurement dies 97 and 98. While being transported, the sample S that has been measured is unloaded between the films 95 and 96, and the sample S is collected.
[0004]
[Problems to be solved by the invention]
Conventionally, in order to measure viscoelasticity while automatically carrying out a sticky sample, a viscoelasticity measuring device equipped with an automatic carry-out machine having the above-described configuration has been used. Since the measurement is performed, there is a problem that the influence of the film appears in the measurement value. Furthermore, since the film is disposable, there is a problem that the running cost increases accordingly.
The present invention has been made in view of such circumstances, and is a viscous material that can automatically carry out a sample without using consumables such as a film that affects a measured value or causes a cost increase. An object of the present invention is to provide an elasticity measuring device.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the viscoelasticity measuring device of the present invention is a viscoelasticity measuring device provided with an automatic unloader for automatically unloading a sample after measurement. A needle-shaped sample peeling part that grips and peels off from the measurement part, and a shaft that moves the sample peeling part in the longitudinal direction of the needle and has a rear end fixed to a rotatable fulcrum and driven forward and backward. A first actuator having the sample peeling portion attached thereto, and a front end fixed to a front end of the first actuator and a front end of a shaft driven forward and backward fixed to a rotatable fulcrum, and extending the shaft and a second actuator for moving the sample peeled portion in the vertical direction, and a sample detachment device to detach the sample from the sample peeled portion attracts sample by detaching tool, the gripping of the sample, peeling and unloading It is characterized in that it comprises an automatic unloading machine to perform.
The viscoelasticity measuring apparatus of the present invention is configured as described above, and can easily and automatically carry out the adhesive sample after measurement.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the viscoelasticity measuring apparatus of the present invention will be described with reference to examples. FIG. 1A is a schematic plan view showing a configuration of a viscoelasticity measuring apparatus according to an embodiment of the present invention, and FIG. 1B is a schematic side view thereof. A viscoelasticity measuring apparatus according to the present invention includes a viscoelasticity measuring apparatus main body (hereinafter referred to as a measuring apparatus main body) 1 that performs viscoelasticity measurement of a sample S as shown in FIG. Controls the rotary table 21 and sample loading machine 22 for automatic loading, the automatic unloading machine 2 for automatically unloading the measured sample S to the collection place, the measuring device main body 1, the automatic unloading machine 2 and the like. The calculation control unit 3 shown in FIG.
[0007]
The measurement apparatus main body 1 includes a lower die 4 that continuously rotates or rotationally vibrates with the sample S mounted thereon, a lower die drive unit 5 that supports the lower die 4 and applies continuous rotation or rotational vibration, and a sample. The upper die 6 that holds S from above and the rotational torque is transmitted through the sample S, is connected to the upper die 6 to detect the rotational torque, and the upper die 6 held by the crosshead 72 is moved vertically. The upper die driving unit 7 is moved to the lower die driving unit 7, and the lower die driving unit 5 and the frame body 8 that supports the upper die driving unit 7 are configured.
[0008]
The lower die driving unit 5 connects an electric motor 51 that continuously rotates or rotationally vibrates the lower die 4, for example, a step motor controlled by a computer, and a shaft rod of the electric motor 51 and the lower die 4. A sleeve 52 and a casing 53 that supports the electric motor 51 and is fixed to the frame body 8 are configured.
[0009]
The upper die drive unit 7 includes a cross head 72 that fixes the rotational torque detector 71 connected to the upper die 6, and die rods 73 and 74 that support the cross head 72 and are movable in the vertical direction. An air cylinder 75 that drives the die rods 73 and 74 and a cross head 76 that supports the die rods 73 and 74 and connects to the air cylinder 75 are configured.
[0010]
Further, as shown in FIG. 1, the sample S is carried in and out of the rotary table 21 that rotates in the direction of the arrow and continuously supplies the sample S, and picks up the sample S of the rotary table 21 and rotates in the direction of the arrow. A sample mounting machine 22 mounted at a measurement position indicated by a dotted line of the lower die 4 of the measuring apparatus main body 1, a sample peeling machine 23 for peeling off the sample S after measurement from the lower die 4, and this The rotation is performed by a rotary driving device 27 that rotates the sample peeling machine 23 horizontally and its support base 28, and a sample removal machine 26 that is installed at the collection position and removes the sample S from the sample peeling machine 23. In addition, it is also possible to carry in the sample S using a belt conveyor (not shown) instead of the rotary table 21.
[0011]
As shown in the perspective view of FIG. 2, the sample mounting machine 22 includes a plurality of built-in electric motors (not shown), for example, pulse motors that can be controlled by a computer, A, B, C, It consists of a gripping portion 22a, a rotating portion 22b, a telescopic portion 22c, a rotating portion 22d, and a telescopic portion 22f that can move in the directions D and E, respectively.
[0012]
In order to mount the sample S at the measurement position, the sample S on the rotary table 21 is first sandwiched between the gripping portions 22a, transported to the side surface of the measurement apparatus main body 1 by the rotation portion 22d, and moved to the measurement position by the extendable portion 22c. Then, the gripping portion 22a is opened and mounted on the lower die 4.
In order to collect the sample S at the collection position, the sample peeling machine 23 peels the sample S from the lower die 4 by the method described below, and then rotates the sample peeling machine 23 in the direction of the arrow. Then, the sample S is pulled and removed and collected by the remover 26a of the sample remover 26. The expansion / contraction part 22f changes its height appropriately during conveyance depending on the height difference of the rotary table 21 and the lower die 4, and the height is controlled by a computer.
[0013]
FIG. 3A is a side view showing the configuration of the sample peeling machine 23, and FIG. 3B is a front view thereof. This sample peeling machine 23 is used to pierce and hold the sample S, and attaches a needle-shaped insertion tool 23a in which one or a plurality of needles are fixed with resin or the like, and a shaft 23b that moves in the lateral direction is attached. And an actuator 23e having a shaft 23d that moves in the vertical direction. One end of the actuator 23c is fixed to a rotatable fulcrum, the other end is fixed to the lower end of the actuator 23e, and the tip of the shaft 23d is fixed to a rotatable fulcrum. FIG. 3C shows a state in which the shaft 23b of the actuator 23c and the shaft 23d of the actuator 23e are extended. The shaft 23b can move in the longitudinal direction of the needle, and the shaft 23d can move in the direction perpendicular thereto. For driving the actuator 23c and the actuator 23e, an electric force by an electric motor, an aerodynamic force by an air cylinder, or the like is used.
[0014]
4A to 4D are operation explanatory views for explaining a series of operations until the sample S of the sample peeling machine 23 is taken out from the needle stick. When the viscoelasticity measurement is completed, the needle of the needle-shaped insertion tool 23a of the actuator 23c is inserted into the sample S sandwiched between the lower die 4 and the upper die 6 (a). Next, the upper die 6 moves upward, and the sample S is left on the lower die 4 (b). Next, the actuator 23e is lifted by the actuator 23e, and the sample S is peeled from the lower die 4 (c). Then, the actuator 23c moves backward and the sample S is taken out from the measuring apparatus main body 1 (see FIG. 1) (d).
[0015]
The number and length of the needles of the needle-shaped insertion tool 23a are preferably selected according to the material and shape of the sample S. As a modified example of the needle-shaped insertion tool 23a, a metallic comb-shaped insertion tool 24 processed into a comb shape as shown in FIG. 5 or a brush-shaped insertion tool in which the metallic brush shown in FIG. The dressing 25 can also be used.
[0016]
The arithmetic control unit 3 is composed of a microcomputer including a CPU, a ROM, a RAM, an interface, etc., and transmits a control signal to each object shown in FIG. 7 through a cable, and receives a measurement signal from the measuring apparatus main body 1. Calculate the measured value as input. That is, for the measurement apparatus main body 1, rotational vibration control of the lower die 4, height control of the upper die 6, calculation processing of detection signals from the rotational torque detector 71 are performed, and the automatic unloader 2 is processed. For example, rotation and stop control of the rotary table 21, sample gripping and transport control of the sample loading machine 22, sample peeling control of the sample peeling machine 23, rotation control of the rotary driving machine 27, and sample removal control of the sample removing machine 26, etc. I do.
[0017]
Using the viscoelasticity measuring apparatus configured as described above, the viscoelasticity measurement of the sample S is performed according to the following procedure based on the arithmetic control operation of the arithmetic control unit 3.
1. The sample S is mounted on the turntable 21, rotated at a constant speed, and stopped at a pickup position for a fixed time.
2. After the sample S is picked up by the sample mounting machine 22 and moved to the side surface of the measurement apparatus main body 1, it is placed at the measurement position of the lower die 4.
3. The upper die 6 is lowered and the sample S is sandwiched between the lower dies 4.
4). The electric motor 51 is driven at a predetermined angle and frequency.
5). A viscoelastic value is calculated from the detection signal from the rotational torque detector 71.
6). After piercing the sample S with the needle of the sample peeling machine 23, the upper die 6 is lifted.
7). The sample peeling machine 23 peels the sample S from the lower die 4.
8). The sample peeling machine 23 is rotated in the direction of the collection position by the rotary drive machine 27.
9. The sample remover 26 draws and removes the sample S from the sample peeling machine 23.
10. Subsequently, the next sample S is picked up and the procedure from item 1 is repeated.
[0018]
The viscoelasticity measuring apparatus of the present invention is a viscoelastic substance by using an automatic carry-out machine that pierces a needle insertion tool from the lateral direction and lifts and peels it, even if it is a highly viscous substance as described above. The viscoelasticity measuring device according to the present invention is not limited to the embodiment. For example, the sample peeling machine 23 may be movable, and the stabbed sample S may be directly transferred to the collection position.
[0019]
【The invention's effect】
The viscoelasticity measuring apparatus of the present invention is configured as described above, and can automatically carry out the sample without affecting the viscoelasticity measurement result, and also reduces the running cost because no consumables are used. be able to.
[Brief description of the drawings]
FIG. 1 is a top view (a) and a side view (b) of an embodiment of a viscoelasticity measuring apparatus of the present invention.
FIG. 2 is a perspective view of a sample mounting machine according to an embodiment.
FIG. 3 is a side view (a), a front view (b), and a side view (c) during operation of a sample peeling machine according to an embodiment.
FIG. 4 is an operation explanatory diagram of a sample peeling machine.
FIG. 5 is a plan view (a) and a side view (b) of a comb-shaped insertion device according to an embodiment.
FIGS. 6A and 6B are a plan view and a side view of a brush-type insertion device according to an embodiment.
FIG. 7 is a block configuration diagram of an arithmetic control unit according to the embodiment.
FIG. 8 is a schematic configuration diagram of an automatic transfer machine of a conventional viscoelasticity measuring apparatus.
[Explanation of symbols]
1. Viscoelasticity measuring device body (measuring device body)
2 ... Automatic unloading machine 21 ... Rotary table 22 ... Sample loading machine 22a ... Gripping part 22b, 22d ... Rotating part 22c, 22f ... Retractable part 23 ... Sample peeling machine 23a ... Needle-shaped inserter 23b, 23d ... Shaft 23c, 23e ... Actuator 24 ... Comb insert 25 ... Brush insert 26 ... Sample remover 26a ... Remover 27 ... Rotary drive 28 ... Support base 3 ... Calculation control unit 4 ... Lower die 5 ... Lower side Die drive unit 51 ... Electric motor 52 ... Sleeve 53 ... Case 6 ... Upper die 7 ... Upper die drive unit 71 ... Rotary torque detectors 72, 76 ... Cross head 73, 74 ... Die rod 75 ... Air cylinder 8 ... Frame 91, 92, 93, 94 ... rollers 95, 96 ... film 97, 98 ... measuring die

Claims (1)

In a viscoelasticity measuring apparatus equipped with an automatic unloader that automatically unloads a sample after measurement, the needle-shaped sample peeling unit that is inserted into the sample to be unloaded, grips the sample and peels from the measurement unit, and A first actuator for moving the sample peeling portion in the longitudinal direction of the needle , the rear end of which is fixed to a rotatable fulcrum and the shaft is driven forward and backward, and the front end is the first actuator a second actuator for moving the sample peeled portion in the vertical direction by the distal end of the shaft to be driven back and forth are fixed to the front end of the first actuator is fixed at the rotatable fulcrum extending the shaft, taken the outer member attracts sample and a sample detachment device to detach the sample from the sample stripping unit, viscosity characterized by comprising gripping the specimen, an automatic unloading machine to perform the separation and unloading Sex measuring device.

Images