Differential thermal analysis sample cutter

Abstract

The utility model belongs to the technical field of sample cutting, and discloses a differential thermal analysis sample cutter which comprises a push rod (1), a handle (2), a cutting knife and a base plate, the cutting knife is in a long cylinder shape, a handle (2) is fixedly arranged at the upper end of the cutting knife, and a knife point is arranged at the lower end of the cutting knife for cutting a wafer. The push rod is in a long rod shape, the diameter of the push rod is smaller than the inner diameter of the cutting knife (3), the lower end of the push rod (1) is inserted into the cutting knife (3), a top cover is fixed to the upper end of the push rod (1), the push rod (1) is sleeved with a spring, one end of the spring makes contact with the handle, and the other end of the spring makes contact with the top cover. And the base plate (4) is arranged below the cutting knife (3) and is used for supporting a sample. According to the utility model, errors caused by different operators during sample cutting are avoided, cutting is convenient and fast, consistent appearance, consistent weight and consistent flatness of detected samples are ensured, and the reproducibility and accuracy of analysis and detection are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sample cutting, and particularly relates to a differential thermal analysis sample cutter. Background Art

[0002] In the process of resin product preparation, it is necessary to analyze its oxidation induction time, melting point / crystallization point, etc. When using a differential scanning calorimeter for analysis, the sample needs to be pretreated.

[0003] First, use a tablet press to prepare the sample to be tested into a sample tablet with dimensions of 4 cm * 2.8 cm * 0.5 cm. Then, manually use a cutting knife to cut it into a round piece with a diameter less than 5.5 mm, and then place the round piece in a differential thermal analysis aluminum pot. It is found that the cutting knife used in the sample pretreatment process of analyzing the melting point / crystallization point is greatly affected by human factors. The sizes and thicknesses of the samples cut by different personnel are inconsistent, and after cutting, it has a certain impact on the analysis results.

[0004] Therefore, it is necessary to provide a tool that can ensure that the appearance, weight, and flatness of the cut samples are consistent. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a tool that can ensure that the appearance, weight, and flatness of the cut samples are consistent.

[0006] To solve the above technical problem, the specific technical solution of the utility model is as follows:

[0007] A differential thermal analysis sample cutter includes a push rod 1, a handle 2, a cutting knife 3, and a backing plate 4;

[0008] The cutting knife 3 is in the shape of a long tube. A handle 2 is fixedly arranged at its upper end, and its lower end is set as a blade edge for cutting round pieces; the push rod 1 is in the shape of a long rod, and its diameter is smaller than the inner diameter of the cutting knife 3. The lower end of the push rod 1 is inserted into the interior of the cutting knife 3. A top cover is fixed at the upper end of the push rod 1. A spring is sleeved on the push rod 1. One end of the spring contacts the handle, and the other end contacts the top cover; the backing plate 4 is arranged below the cutting knife 3 for supporting the sample.

[0009] Among them, the handle is a wooden handle.

[0010] Among them, the push rod is a resin rod.

[0011] Among them, the diameter of the push rod is less than 4.6 mm.

[0012] Among them, the cutting knife is a stainless steel tube.

[0013] Among them, the cutting knife is 9.4 mm long and has an inner diameter of 4.6 mm.

[0014] Among them, the backing plate is a wooden backing plate.

[0015] Among them, a resin sheet is installed on the wooden backing plate.

[0016] The utility model has the following advantages: it solves the errors caused by different operators during sample cutting, is convenient and fast for cutting, ensures that the appearance, weight and flatness of the detected samples are consistent, and improves the reproducibility and accuracy of analysis and detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a differential thermal analysis sample cutter of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to better understand the purpose, structure and function of the utility model, the following further detailed description of the utility model is made with reference to the drawings.

[0019] As Figure 1 shown, the differential thermal analysis sample cutter of the utility model includes a push rod 1, a handle 2, a cutting knife 3 and a backing plate 4.

[0020] The cutting knife 3 is in the shape of a long tube, a handle 2 is fixedly arranged at its upper end, and its lower end is set as a blade for cutting circular pieces; the push rod 1 is in the shape of a long rod, its diameter is smaller than the inner diameter of the cutting knife 3, the lower end of the push rod 1 is inserted into the interior of the cutting knife 3, a top cover is fixed at the upper end of the push rod 1, a spring is sleeved on the push rod 1, one end of the spring contacts the handle, and one end contacts the top cover; the backing plate 4 is arranged below the cutting knife 3 and is used to support the sample.

[0021] The handle 2 is a wooden handle; the wooden handle is installed on the cutting knife to enhance the comfort of use.

[0022] The push rod 1 is a resin rod with a diameter less than 4.6 mm; the push rod can automatically push the sample piece out of the cutting knife, facilitating the operator to take out the cut sample from the cutting knife.

[0023] The cutting knife 3 is a stainless steel pipe with a length of 9.4 mm and an inner diameter of 4.6 mm.

[0024] The backing plate 4 is a wooden backing plate, and a resin sheet is installed on the wooden backing plate. As a cutting backing plate, it is placed below to protect the sample during sample cutting, and it is clean and not contaminated.

[0025] After using the cutter of this embodiment, the cut samples are smooth and flat, and their sizes, shapes and masses are all the same. Different operators use the cutter, cut the sample pieces, and then conduct melting point analysis and record the analysis data, avoiding data deviation caused by different operators cutting the sample pieces.

[0026] Although the embodiments of the present utility model have been described in conjunction with the accompanying drawings, those skilled in the art can still make several modifications and improvements without departing from the principle of the present utility model, and these should also be regarded as falling within the protection scope of the present utility model.

Claims

1. A differential thermal analysis sample cutter, characterized in that: It comprises a push rod (1), a handle (2), a cutting knife (3) and a pad (4); The cutting knife (3) is in the shape of a long tube, with a handle (2) fixedly provided at its upper end, and a blade provided at its lower end for cutting discs; the push rod (1) is in the shape of a long rod, with a diameter smaller than the inner diameter of the cutting knife (3); the lower end of the push rod (1) is inserted into the interior of the cutting knife (3); a top cover is fixedly provided at the upper end of the push rod (1); a spring is sleeved on the push rod (1), one end of the spring is in contact with the handle, and the other end is in contact with the top cover; the pad (4) is arranged below the cutting knife (3) for supporting the sample.

2. The differential thermal analysis sample cutter according to claim 1, characterized in that: The handle is a wooden handle.

3. The differential thermal analysis sample cutter according to claim 1, characterized in that: The push rod is a resin rod.

4. The differential thermal analysis sample cutter according to claim 3, characterized in that: The push rod diameter is less than 4.6mm.

5. The differential thermal analysis sample cutter according to claim 1, characterized in that: The cutting knife is a stainless steel tube.

6. The differential thermal analysis sample cutter according to claim 5, characterized in that: The cutting knife is 9.4 mm long and has an inner diameter of 4.6 mm.

7. The differential thermal analysis sample cutter according to claim 1, characterized in that: The pad is a wooden pad.

8. The differential thermal analysis sample cutter according to claim 7, characterized in that: A layer of resin sheet is additionally installed on the wooden pad.

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