JPH0536201Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a flow tester using a thin tube extrusion method.

B. Prior Art This type of flow tester measures the flowability, viscosity, etc. of resins, foods, ceramics, iron powder, etc. under desired temperature conditions.

As shown in Fig. 3, the conventional flow tester consists of a cylinder 2 into which a sample to be measured 1 is placed, and a cylinder 2 that contains a sample 1 to be measured.
a heater 3 provided on the outer periphery of the cylinder 2, a die 4 provided on the lower surface side of the cylinder 2 and having a hole 4a for passing the sample, and a die holder 5 that is screwed onto the cylinder 2 and attaches the die 4 to the cylinder 2; It has a piston 6. When a load is applied to the piston 6 as indicated by arrow a and the sample 1 is heated and maintained at a required constant value by the heater 3, the molten sample 1 is pushed out from the hole 4a. The descending speed of the piston 6 at this time is detected by a measurement system, and data such as the flowability of the sample 1 is determined from the descending speed.

C. Problems to be Solved by the Invention However, since the die 4 is attached to the lower side of the cylinder 2 by screwing the die holder 5 from below the flow tester, it is difficult to set the die 4 and operability is poor. In addition, the sample enters between the die 4 and the die holder 5 and the cylinder body (indicated by reference numeral 1a),
In particular, when testing thermosetting resins (epoxy resins, etc.), the invading sample adheres and hardens in these areas, and since the cylinder body is fixed, solvents cannot be used. Scratches occurred inside the cylinder 2 when the cylinder 2 was rubbed, making it impossible to conduct a test with high reproducibility. Furthermore, cylinder 2
If the furnace is damaged, the entire furnace including the cylinder 2 and heater 3 must be replaced, which poses problems in terms of cost and work efficiency.

An object of the present invention is to provide a flow tester that improves the workability of the die set and allows only the cylinder portion to be replaced.

D. Means for Solving Problems The flow tester according to the present invention includes a furnace body equipped with a heater for heating a sample, a cylinder detachably attached to an insertion part formed in the furnace body, and a cylinder for passing the sample. The furnace includes a die having a hole and held between a cylinder and a receiving part of the furnace body within an insertion part.

E. Effect The cylinder, which is separate from the furnace main body, is removably attached to the furnace main body. Therefore, if a scratch occurs on the inner surface of the cylinder, only the cylinder can be replaced while leaving the furnace body and heater intact. Also, the die is
It is held between the cylinder and the furnace body receiving part within the insertion part of the furnace body. Therefore, it can be inserted and set from the top, improving the workability of setting.

F Example As shown in Figure 1, the flow tester of this example is
A substantially cylindrical furnace body 7 and a cylinder 8 are constructed separately, and a coil heater 3 is attached to the outer periphery of the furnace body 7. An insertion section 7a is formed in the furnace body 7, and a die 9 and a cylinder 8 are removably attached to this insertion section 7a. A receiving portion 7b is formed at the lower end of the insertion portion 7a to abut against and receive the outer peripheral edge of the lower surface of the die 9, and a cylinder holder 10 for pressing the cylinder 8 is screwed into the upper portion.
This fixes the cylinder 8 and die 9 to the internal insertion portion 7a of the furnace body 7.

When installing the die 9, insert the die 9 into the insertion section 7a from above in the figure and support it on the receiving section 7b, then attach the cylinder 8, and use the cylinder holder 10 to fix the cylinder 8 in the insertion section 7a. Then, the die 9 is held between the cylinder 8 and the receiving part 7b. At the time of testing, the sample 1 to be measured is placed in the cylinder 8, heated to a predetermined temperature by the heater 3, and then pushed out by the piston 6 to perform the measurement.
The flowability, viscosity, etc. of food and other target samples can be evaluated along with temperature.

According to the above configuration, when the cylinder 8 is damaged, only the cylinder 8 needs to be replaced, and the cost is also low. Furthermore, the die 9 can be inserted from the top, improving workability. Furthermore, since there is no threaded portion in the lower part through which the sample 1 is pushed out, the sample does not stick to the sample after the test as in the conventional case, and handling is also improved. In addition, the distance d from the bottom surface of the die 9 to the bottom surface of the furnace body 7 can be shortened, and butter, thiokolate, low-melting resin, etc.
It is difficult for the sample to adhere to the area around the nozzle, which improves the reliability and reproducibility of data caused by sample clogging. Moreover, even if it gets stuck, it is easy to clean.

Another embodiment shown in FIG.
is shaped like a cap nut, and the die 9 can be attached and held on the bottom surface of the cylinder 8. The cylinder 8 can hold the die 9 and both can be inserted into the insertion part 7a. The setting workability is further improved.

Note that the insertion portion 7a of the furnace body 7 may have a conical shape that becomes narrower toward the bottom, and the cylinder 8 may also have a conical outer peripheral surface in accordance with this. In this configuration, the furnace The adhesion between the main body 7 and the cylinder 8 is improved, and heat transfer is improved.

G. Effects of the invention Since the present invention is constructed as described above, not only is it difficult for the sample to adhere to the periphery of the die, but even if the sample hardens, it is easy to clean the sample. Furthermore, the cost required for replacement when the cylinder is damaged can be reduced, and the workability of die setting and the like is improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one embodiment of the present invention, FIG. 2 is a sectional view of another embodiment, and FIG. 3 is a sectional view of a conventional structure. 1...sample, 3...heater, 6...piston,
7...Furnace body, 7a...Insertion part, 8...Cylinder, 9...Die, 10...Cylinder holder.

Claims (1)

[Scope of utility model registration request] A furnace body equipped with a heater for heating the sample, a cylinder detachably attached to an insertion part formed in the furnace body, and a receiving part of the cylinder and the furnace body, which has a hole for passing the sample and is connected to the cylinder in the insertion part. A flow tester comprising a die held between the die and the die.