Plastic sample preparation device

Abstract

The utility model provides a plastic sample preparation device and belongs to the technical field of machinery. The problems that an existing earpiece is insufficient in tensioning force and not high in use stability are solved. The plastic sample preparation device comprises a pressing block, the pressing block is sleeved with a sliding block, the circumferential inner side wall of the sliding block is attached to the circumferential outer side wall of the pressing block, a cutting part is formed at the bottom of the sliding block, and the cutting part is arranged around the pressing block. According to the plastic sample preparation device, the sample preparation efficiency can be improved while the sample preparation precision is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a plastic sample preparation device. Background Art

[0002] In the prior art for the production of pipes, before mass production, a large number of experimental works need to be carried out on samples. Among them, the smoke density experiment is one of them. In order to ensure the smooth progress of the experiment, generally, the pipe is heated and softened, then flattened and cooled. On the softened pipe, the size and shape of the required sample piece are drawn with a marker pen, and then it can be sawed off with a handsaw.

[0003] However, this kind of sample preparation method does not meet the actual requirements. The reason is that the circumferential side wall surface of the sample piece manufactured by the above method is rough and does not meet the requirements for the sample preparation accuracy in the experiment. Although workers can use sandpaper to carefully polish the side wall of the sample piece later, it is also very energy-consuming. Summary of the Invention

[0004] The purpose of the utility model is to provide a plastic sample preparation device aiming at the above problems existing in the prior art. The technical problem to be solved by the utility model is: how to improve the sample preparation efficiency while ensuring the sample preparation accuracy.

[0005] The purpose of the utility model can be realized by the following technical solutions: a plastic sample preparation device includes a pressing block. It is characterized in that a sliding block is sleeved outside the pressing block. The circumferential inner side wall of the sliding block is attached to the circumferential outer side wall of the pressing block. A cutting part is formed at the bottom of the sliding block, and the cutting part is arranged around the pressing block.

[0006] Before operation, the plastic pipe is first heated to make it softened. At this time, the worker can place the plastic sample preparation device on the softened material, flatten the material through the pressing block, and then push the sliding block by hand. Since the circumferential inner wall of the sliding block is attached to the circumferential outer wall of the pressing block, the sliding track of the sliding block is prevented from deviating. After the sliding block slides down in place, through the extrusion force applied by the user on the sliding block, the cutting part formed at the lower end of the sliding block punches the material, so as to cut out a sample piece with a shape and size meeting the requirements on the softened material. Then, by pushing the pressing block, the sample piece obtained by cutting is ejected from the lower end of the sliding block by the pressing block. In the whole preparation process, it is not necessary for the worker to draw lines on the material. The sample piece is directly obtained by cutting on the softened material. And because the whole operation process is carried out in the state that the material is relatively soft, burrs on the circumferential outer wall of the sample piece can be effectively avoided during the cutting process. Thus, the sample preparation accuracy is ensured while the sample preparation efficiency is ensured.

[0007] In the above-mentioned plastic sample preparation device, the slider is columnar, and there are several inclined surfaces extending to the bottom of the slider on the circumferential outer wall of the slider. Each of the inclined surfaces is inclined inward from top to bottom, and the several inclined surfaces enclose to form the cutting part at the lower end of the slider. Specifically, through the arrangement of each inclined surface, the circumferential outer wall at the lower end of the slider is inclined inward from top to bottom. It can also be understood that the wall thickness of the lower end of the slider gradually decreases from top to bottom, and the wall thickness is the smallest at the lower end port. That is, the cutting part is formed at the lower end of the slider through the cooperation of each inclined surface. Moreover, the arrangement of each inclined surface can also effectively ensure that during the sample preparation process, the acting force of the cutting part on the material surface is more concentrated, thereby ensuring the labor-saving nature of cutting.

[0008] In the above-mentioned plastic sample preparation device, the top of the pressing block is provided with a guide rod arranged vertically. An annular plate is sleeved outside the guide rod. The inner wall of the circumferential direction of the annular plate is attached to the outer wall of the circumferential direction of the guide rod. The top of the pressing block has several connecting rods arranged around the guide rod along the vertical direction, and each of the connecting rods is positioned on the bottom surface of the annular plate. The user can push the annular plate downward or pull it upward along the guide rod, and the annular plate is used to control the up and down movement of the slider, thereby ensuring convenient and labor-saving operation.

[0009] In the above-mentioned plastic sample preparation device, several clamping holes arranged around the guide rod are opened on the bottom surface of the annular plate, and the corresponding connecting rods are clamped in each of the clamping holes. Thereby, while ensuring the stable connection between the annular plate and the slider, it is ensured that the two are detachable. As an alternative solution, the guide rod can also be directly welded and fixed to the bottom surface of the annular plate to ensure the connection reliability between the annular plate and the slider.

[0010] In the above-mentioned plastic sample preparation device, several elastic members arranged around the guide rod are provided at the top of the pressing block and below the annular plate. One end of each elastic member abuts against the bottom surface of the annular plate, and the other end abuts against the outer wall of the top. Through this arrangement, after the user presses the annular plate downward to make the annular plate push the slider downward, the compressed elastic members can generate a reverse elastic force. After the worker releases the hand, this elastic force can push the annular plate in the reverse direction, making the annular plate drive the slider to move upward and reset. At the same time, the sample piece cut by the cutting part at the lower end of the slider is pushed out by the pressing block, and the operation is more convenient.

[0011] In the above-mentioned plastic sample preparation device, several upper insertion grooves arranged around the guide rod are opened at the bottom of the annular plate, and several lower insertion grooves arranged around the guide rod are opened at the top of the pressing block. One end of each elastic member is embedded in the upper insertion groove, and the other end is embedded in the lower insertion groove. Thereby, the connection reliability of each elastic member is ensured, and the deviation of the elastic force is avoided. As an alternative solution, each elastic member can also adopt a metal spring piece.

[0012] In the above-mentioned plastic sample preparation device, the upper end of the guiding rod is connected with a spherical holding part, and the holding part is located above the annular plate. This facilitates the worker to hold the pressing block and ensures the high-efficiency and convenience of the sample preparation work.

[0013] Compared with the prior art, the present plastic sample preparation device has the following advantages:

[0014] A slider forming a cutting part is sleeved outside the pressing block in a sliding connection manner. The worker presses the softened material flat through the pressing block and pushes the slider downward. A ring-shaped cutting part directly cuts the material to obtain a sample piece meeting the experimental requirements, and the pressing block ejects the sample piece by moving the slider upward. The operation is more convenient and the sample preparation accuracy is higher. Description of the Drawings

[0015] Figure 1 is a structural schematic diagram of the present plastic sample preparation device.

[0016] Figure 2 is an exploded view of the present plastic sample preparation device.

[0017] Figure 3 is a structural schematic diagram of the pressing block.

[0018] Figure 4 is a structural schematic diagram of the slider.

[0019] Figure 5 is a structural schematic diagram of the annular plate.

[0020] In the figure, 1, pressing block; 11, slider; 111, cutting part; 112, inclined surface; 113, connecting rod; 12, guiding rod; 121, annular plate; 1211, clamping hole; 1212, upper insertion slot; 122, holding part; 13, elastic part; 14, lower insertion slot. Detailed Embodiments

[0021] The following are specific embodiments of the present invention in combination with the drawings, and the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0022] As Figures 1-3 shown, the present plastic sample preparation device includes a prismatic pressing block 1 and a slider 11. Both ends of the slider 11 are penetrated and sleeved outside the pressing block 1, so that the circumferential inner side wall of the slider 11 is in contact with the circumferential outer side wall of the pressing block 1. Combining Figure 4, on the circumferential outer wall of the slider 11 near the lower end, there is an inclined surface 112. Each inclined surface 112 is inclined inward from top to bottom, so that a cutting portion 111 surrounding the pressing block 1 is formed at the lower end of the slider 11. As a further explanation, the pressing block 1 and the slider 11 can also be cylindrical, triangular prism-shaped, etc. That is to say, by manufacturing the pressing block 1 and the slider 11 with different shapes, it is ensured that the user can cut and obtain sample pieces with different shapes and sizes through this sample preparation device.

[0023] Combined with Figure 2 and Figure 5 , at the center of the top of the pressing block 1, a guide rod 12 is integrally formed vertically. An annular plate 121 is sleeved on the guide rod 12 in the horizontal direction. The circumferential inner side wall of the annular plate 121 is in contact with the circumferential outer side wall of the guide rod 12. At the top of the slider 11 near the circumferential corners, a connecting rod 113 is formed vertically. And at the bottom of the annular plate 121 near the circumferential corners, a clamping hole 1211 is opened. Each connecting rod 113 is clamped in each clamping hole 1211 correspondingly. Of course, such a setting method is to ensure that the slider 11 and the annular plate 121 can be disassembled, so that the annular plate 121 can be adapted to sliders 11 and pressing blocks 1 with different shapes for assembly. As another alternative solution, each connecting rod 113 can also be directly welded and fixed to the bottom surface of the annular plate 121.

[0024] In addition, at the top of the pressing block 1 near the circumferential corners, an elastic member 13 is provided below the annular plate 121. Specifically, it is a spring. As an alternative solution, it can also be an elastic shrapnel. At the top of the pressing block 1, corresponding to each elastic member 13, a lower insertion slot 14 is opened. At the bottom surface of the annular plate 121, corresponding to each elastic member 13, an upper insertion slot 1212 is opened. The upper ends of each elastic member 13 are correspondingly inserted into the upper insertion slots 1212, and the lower ends are correspondingly inserted into the lower insertion slots 14.

[0025] It is worth mentioning that at the upper end of the guide rod 12, a spherical holding portion 122 is also provided. To ensure convenient disassembly of the annular plate 121, it is preferably to connect the holding portion 122 to the upper end of the guide rod 12 in a screwed or clamped manner. As an alternative solution where the holding portion 122 is not detachable, the holding portion 122 can also be directly integrally formed at the upper end of the guide rod 12.

[0026] Working principle: First, heat the pipe fitting to soften it. Then, the worker holds the holding part 122 and places the whole plastic sample-making device on the softened material. First, flatten the surface of the material by the bottom of the pressing block 1. Then, the worker pushes the annular plate 121 downward by hand, so that the slider 11 is pushed downward. The cutting part 111 at the lower end of the slider 11 applies a force to the material, and a sample piece in the shape of a square plate that is embedded in the lower end of the slider 11 is cut on the material. Then, the worker releases the annular plate 121, and the elastic force generated by the deformation of each elastic part 13 pushes the annular plate 121 and the slider 11 upward, so that the pressing block 1 presses on the cut sample piece. After the sample piece is fully cooled, the worker holds the holding part 122 and moves the whole plastic sample-making device away to take out the sample piece.

[0027] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0028] Although terms such as pressing block 1, slider 11, cutting part 111, inclined surface 112, connecting rod 113, guiding rod 12, annular plate 121, clamping hole 1211, upper insertion slot 1212, holding part 122, elastic part 13, lower insertion slot 14, etc. are used more in this article, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A plastic sample preparation device, comprising a pressing block (1), characterized in that: The pressing block (1) is provided with a slider (11) on its outer sleeve, the circumferential inner wall of the slider (11) is in contact with the circumferential outer wall of the pressing block (1), the bottom of the slider (11) forms a cutting portion (111), and the cutting portion (111) is arranged around the pressing block (1).

2. The plastic sample preparation device according to claim 1, characterized in that: The slider (11) is columnar, and has a plurality of inclined surfaces (112) extending to the bottom of the slider (11) on a circumferential outer wall near the lower end thereof, each of the inclined surfaces (112) being arranged to be inclined inward from top to bottom, and the plurality of inclined surfaces (112) are combined to form the cutting portion (111) at the lower end of the slider (11).

3. The plastic sample preparation device according to claim 2, characterized in that: The top of the pressing block (1) is provided with a vertically arranged guide rod (12), the outer sleeve of the guide rod (12) is provided with an annular plate (121), the circumferential inner wall of the annular plate (121) is in contact with the circumferential outer wall of the guide rod (12), and the top of the sliding block (11) is provided with a plurality of connecting rods (113) arranged around the guide rod (12) in the vertical direction, and each of the connecting rods (113) is positioned on the bottom surface of the annular plate (121).

4. The plastic sample preparation device according to claim 3, characterized in that: A plurality of clamping holes (1211) arranged around the guide rod (12) are provided on the bottom surface of the annular plate (121), and each of the connecting rods (113) is correspondingly clamped in each of the clamping holes (1211).

5. The plastic sample preparation device according to claim 3 or 4, characterized in that: A plurality of elastic members (13) arranged around the guide rod (12) are provided at the top of the pressing block (1) and below the annular plate (121); one end of each elastic member (13) is pressed against the bottom surface of the annular plate (121), and the other end is pressed against the outer wall of the top.

6. The plastic sample preparation device according to claim 5, characterized in that: The bottom of the annular plate (121) is provided with a plurality of upper plug-in grooves (1212) arranged around the guide rod (12), and the top of the pressing block (1) is provided with a plurality of lower plug-in grooves (14) arranged around the guide rod (12), and one end of each elastic member (13) is embedded in the upper plug-in groove (1212) and the other end is embedded in the lower plug-in groove (14).

7. The plastic sample preparation device according to claim 5, characterized in that: The upper end of the guide rod (12) is connected to a spherical holding portion (122), and the holding portion (122) is located above the annular plate (121).

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