Novel knife for cutting filter paper

Abstract

The utility model relates to the technical field of filter paper cutting, in particular to a novel filter paper cutting knife which comprises a cutting table, a fixing frame is installed at the top end of the cutting table, and an electric push rod is installed at the top end of the fixing frame. The top end of a rotating block is rotationally connected to a fixing shaft in a sleeving mode, so that a cutting knife is conveniently stored in a knife box, the cutting knife can be limited to a positioning groove through a positioning plate at one end of a positioning rod under the elastic effect of a positioning spring, the cutting knife is not prone to being disengaged from the knife box, and the cutting knife is prevented from being disengaged from the knife box through the magnetic attraction effect of a first magnetic attraction block and a second magnetic attraction block. The cutter of the corresponding specification can be positioned at the bottom of the cutter box, so that the cutter is vertically downward, the cutter box is driven by the electric push rod to move downwards, filter paper on the cutting table is conveniently cut through the cutter, filter paper of different specifications can be conveniently cut at a time, and the problem that an existing cutter for cutting the filter paper can only cut one piece at a time, and cutting efficiency is high is solved. And the cutting efficiency of the filter paper is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of filter paper cutting technology, specifically a novel blade for cutting filter paper. Background Technology

[0002] The rapid solvent extractor is a highly efficient and automated sample pretreatment device that can continuously and automatically extract 24 solvent samples. It is applicable to many fields such as environmental analysis, agricultural product safety, food nutrition, pharmaceuticals, natural product extraction, explosives analysis, petrochemicals, and energy. It is suitable for sample pretreatment of existing analytical instruments such as gas chromatography, liquid chromatography, and mass spectrometry. Filter paper is required when using the rapid solvent extractor.

[0003] In existing technologies, due to the high price of filter paper consumables provided by equipment manufacturers, laboratories typically purchase whole sheets of filter paper themselves and cut them into uniform sizes using a cutter to save costs. However, existing filter paper cutters can only cut one sheet at a time, and the size is limited, making it difficult to cut different sizes of filter paper in one operation, which greatly reduces the cutting efficiency. Therefore, we propose a new type of filter paper cutter. Utility Model Content

[0004] The purpose of this invention is to provide a novel blade for cutting filter paper to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a novel filter paper cutting knife, comprising: a cutting table, a fixed frame installed at the top of the cutting table, an electric push rod installed at the top of the fixed frame, the output end of the electric push rod passing through the fixed frame and connected to a knife box, a fixed shaft installed inside the knife box, a knife assembly connected to the outer wall of the fixed shaft, and a positioning component installed at the bottom of the end of the knife box away from the fixed shaft;

[0006] The positioning assembly includes a positioning rod and a positioning plate. The positioning plate has a positioning groove at the end near the tool assembly, and a positioning spring is sleeved on the end of the positioning rod away from the positioning plate.

[0007] The tool assembly includes three cutting blades, each with a pull ring installed on its outer wall. Each of the three cutting blades has a rotating block connected to one end near the fixed shaft, and each of the three rotating blocks has a first magnetic block installed on its side wall.

[0008] Preferably, the fixing frame is inverted U-shaped and fixedly installed on the top of the cutting table, and the electric push rod is fixedly installed on the top of the fixing frame.

[0009] Preferably, both ends of the fixed shaft are fixedly installed on the inner side wall of the tool box, and four limiting rings are fixedly sleeved on the outer wall of the fixed shaft.

[0010] Preferably, an extension plate is fixedly installed at the bottom of one end of the tool box near the positioning rod, and one end of the positioning rod passes through the extension plate and is fixedly installed on the positioning plate.

[0011] Preferably, one end of the positioning spring is fixedly mounted on the extension plate, and the other end of the positioning plate is fixedly mounted on the end of the positioning rod away from the positioning plate.

[0012] Preferably, two limiting rods are provided on both sides of the positioning rod, and limiting holes are correspondingly opened on the surface of the extension plate near the two limiting rods. One end of each limiting rod slides through the adjacent limiting hole and is fixedly installed at one end of the positioning plate.

[0013] Preferably, each of the three cutting blades has a mounting plate fixedly connected to one end of each of the three adjacent rotating blocks, and mounting screws are installed at the four corners of each of the three mounting plates. Each of the three mounting plates is fixedly connected to the adjacent rotating block by the mounting screws.

[0014] Preferably, the top ends of the three rotating blocks are rotatably sleeved on the outer wall of the fixed shaft, and the three rotating blocks are respectively installed between two adjacent limiting rings, and the side walls of the three rotating blocks are fixedly installed with a first magnetic block.

[0015] Preferably, a second magnetic block is fixedly installed on the inner wall of the tool box near the first magnetic block, and the first magnetic block and the second magnetic block are tightly connected by magnetic attraction.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention rotates the top of a rotating block onto a fixed shaft, facilitating the storage of the cutting blade in the blade box. A positioning plate at one end of the positioning rod, under the elastic action of a positioning spring, limits the cutting blade to the positioning groove, preventing it from easily detaching from the blade box. The magnetic attraction of the first and second magnetic blocks positions the corresponding size cutting blade at the bottom of the blade box, ensuring it faces vertically downwards. An electric push rod moves the blade box downwards, facilitating the cutting of filter paper on the cutting table. This allows for the simultaneous cutting of filter paper of different sizes, solving the problem of existing filter paper cutters that can only cut one sheet at a time and have a single specification, thus significantly improving the cutting efficiency of filter paper. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a three-dimensional sectional view of the tool box structure of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 4 This is a three-dimensional schematic diagram of the tool assembly structure of this utility model;

[0022] Figure 5 This is a three-dimensional schematic diagram of the positioning component structure of this utility model.

[0023] In the diagram: 1. Cutting table; 2. Fixing frame; 3. Tool box; 4. Tool assembly; 401. Cutting blade; 402. Pull ring; 403. Mounting plate; 404. Mounting screw; 405. Rotating block; 5. Positioning assembly; 501. First magnetic block; 502. Second magnetic block; 503. Limiting rod; 504. Limiting hole; 505. Positioning rod; 506. Positioning spring; 507. Positioning groove; 508. Positioning plate; 6. Extension plate; 7. Fixing shaft; 8. Limiting ring; 9. Electric push rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Please see Figures 1 to 5 This utility model provides a technical solution: a novel filter paper cutting knife, comprising: a cutting table 1, a fixed frame 2 mounted on the top of the cutting table 1, an electric push rod 9 mounted on the top of the fixed frame 2, the output end of the electric push rod 9 passing through the fixed frame 2 and connected to a knife box 3, a fixed shaft 7 installed inside the knife box 3, a knife assembly 4 connected to the outer wall of the fixed shaft 7, and a positioning assembly 5 installed at the bottom of the end of the knife box 3 away from the fixed shaft 7; the fixed frame 2 is inverted U-shaped and fixedly mounted on the top of the cutting table 1, and the electric push rod 9 is fixedly mounted on the top of the fixed frame 2. Both ends of the fixed shaft 7 are fixedly mounted on the inner side wall of the knife box 3, and four limiting rings 8 are fixedly sleeved on the outer wall of the fixed shaft 7.

[0026] The positioning assembly 5 includes a positioning rod 505 and a positioning plate 508. A positioning groove 507 is provided at the end of the positioning plate 508 near the tool assembly 4. A positioning spring 506 is sleeved on the outer side of the end of the positioning rod 505 away from the positioning plate 508. An extension plate 6 is fixedly installed at the bottom of the tool box 3 near the positioning rod 505. One end of the positioning rod 505 passes through the extension plate 6 and is fixedly installed on the positioning plate 508, facilitating movement of the positioning plate 508 by pulling the positioning rod 505. One end of the positioning spring 506 is fixedly installed on the extension plate 6, and the other end of the positioning plate 508 is fixedly installed at the end of the positioning rod 505 away from the positioning plate 508. The elasticity of the positioning spring 506 enhances the limiting effect on the cutting blade 401. Two limiting rods 503 are provided on both sides of the positioning rod 505. Limiting holes 504 are correspondingly opened on the surface of the extension plate 6 near the two limiting rods 503. One end of each of the two limiting rods 503 slides through the adjacent limiting holes 504 and is fixedly installed on one end of the positioning plate 508, so as to limit the movement of the positioning plate 508 and make the positioning plate 508 less likely to shift.

[0027] The cutting tool assembly 4 includes three cutting blades 401. Each of the three cutting blades 401 has a pull ring 402 mounted on its outer wall. A rotating block 405 is connected to one end of each cutting blade 401 near the fixed shaft 7. A first magnetic block 501 is mounted on the side wall of each of the three rotating blocks 405. The diameters of the three cutting blades 401 can be set to 10cm, 21cm, and 25cm respectively, according to commonly used filter paper specifications in the laboratory, facilitating the simultaneous cutting of three different sizes of filter paper. A mounting plate 403 is fixedly connected to one end of each of the three cutting blades 401 near the adjacent rotating block 405. Mounting screws 404 are installed at the four corners of each of the three mounting plates 403. The three mounting plates 403 are fixedly connected to the adjacent rotating blocks 405 via the mounting screws 404, facilitating the replacement of the cutting blades 401 using the mounting screws 404. The tops of the three rotating blocks 405 are rotatably sleeved on the outer wall of the fixed shaft 7, and the three rotating blocks 405 are respectively installed between two adjacent limiting rings 8. The side walls of the three rotating blocks 405 are all fixedly installed with first magnetic blocks 501, which can limit the rotation of the blocks 405 through the limiting rings 8. The tool box 3 is fixedly installed with a second magnetic block 502 near the inner wall of the first magnetic block 501. The first magnetic block 501 and the second magnetic block 502 are tightly connected by magnetic attraction, which facilitates the positioning of the cutting blade 401 when it moves down and makes cutting, so that the cutting blade 401 is not easily deviated.

[0028] When this device is in operation, the top end of the rotating block 405 is rotated and sleeved onto the fixed shaft 7, making it easy to store the cutting blade 401 into the tool box 3. Through the positioning plate 508 at one end of the positioning rod 505, the cutting blade 401 is limited in the positioning groove 507 under the elastic action of the positioning spring 506, making it difficult for the cutting blade 401 to detach from the tool box 3. By pulling the positioning rod 505 away from the positioning plate 508, the positioning groove 507 is disengaged from the cutting blade 401, and the pull ring 402 can be pulled to remove the cutting blade 401 from the tool box. 3. Through the magnetic attraction of the first magnetic block 501 and the second magnetic block 502, the corresponding specification cutting blade 401 can be positioned at the bottom of the blade box 3, so that the cutting blade 401 is vertically downward. The electric push rod 9 drives the blade box 3 to move downward, which facilitates the cutting of filter paper on the cutting table 1 by the cutting blade 401. By folding the filter paper and placing it on the cutting table 1, it is easy to cut multiple sheets of filter paper of different specifications at one time, which solves the problem that the existing filter paper cutting blade can only cut one sheet at a time and the specifications are limited, which greatly improves the cutting efficiency of filter paper.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel blade for cutting filter paper, comprising: A cutting table (1) is characterized in that: a fixed frame (2) is installed at the top of the cutting table (1), an electric push rod (9) is installed at the top of the fixed frame (2), the output end of the electric push rod (9) passes through the fixed frame (2) and is connected to a tool box (3), a fixed shaft (7) is installed inside the tool box (3), a tool assembly (4) is connected to the outer wall of the fixed shaft (7), and a positioning assembly (5) is installed at the bottom of the end of the tool box (3) away from the fixed shaft (7); The positioning component (5) includes a positioning rod (505) and a positioning plate (508). A positioning groove (507) is provided at one end of the positioning plate (508) near the tool assembly (4), and a positioning spring (506) is sleeved on the outside of the end of the positioning rod (505) away from the positioning plate (508). The tool assembly (4) includes three cutting blades (401), each of which has a pull ring (402) installed on its outer wall. Each of the three cutting blades (401) is connected to a rotating block (405) at one end near the fixed shaft (7), and each of the three rotating blocks (405) has a first magnetic block (501) installed on its side wall.

2. The novel filter paper cutting knife according to claim 1, characterized in that: The fixed frame (2) is inverted U-shaped and fixedly installed on the top of the cutting table (1), and the electric push rod (9) is fixedly installed on the top of the fixed frame (2).

3. The novel filter paper cutting knife according to claim 1, characterized in that: Both ends of the fixed shaft (7) are fixedly installed on the inner side wall of the tool box (3), and four limiting rings (8) are fixedly sleeved on the outer wall of the fixed shaft (7).

4. The novel filter paper cutting knife according to claim 1, characterized in that: An extension plate (6) is fixedly installed at the bottom of one end of the tool box (3) near the positioning rod (505). One end of the positioning rod (505) passes through the extension plate (6) and is fixedly installed on the positioning plate (508).

5. The novel filter paper cutting knife according to claim 1, characterized in that: One end of the positioning spring (506) is fixedly installed on the extension plate (6), and the other end of the positioning plate (508) is fixedly installed on the end of the positioning rod (505) away from the positioning plate (508).

6. The novel filter paper cutting knife according to claim 1, characterized in that: Two limiting rods (503) are provided on both sides of the positioning rod (505). The extension plate (6) has corresponding limiting holes (504) on the surface of the two limiting rods (503). One end of each limiting rod (503) slides through the adjacent limiting hole (504) and is fixedly installed on one end of the positioning plate (508).

7. The novel filter paper cutting knife according to claim 1, characterized in that: Each of the three cutting blades (401) is fixedly connected to a mounting plate (403) at one end near the adjacent rotating block (405). Mounting screws (404) are installed at the four corners of the three mounting plates (403). The three mounting plates (403) are fixedly connected to the adjacent rotating block (405) by the mounting screws (404).

8. The novel filter paper cutting knife according to claim 1, characterized in that: The top ends of the three rotating blocks (405) are rotatably sleeved on the outer wall of the fixed shaft (7), and the three rotating blocks (405) are respectively installed between two adjacent limiting rings (8). The side walls of the three rotating blocks (405) are all fixedly installed with first magnetic blocks (501).

9. A novel filter paper cutting knife according to claim 8, characterized in that: The tool box (3) has a second magnetic block (502) fixedly installed on the inner wall near the first magnetic block (501). The first magnetic block (501) and the second magnetic block (502) are tightly connected by magnetic attraction.

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