A cutting device for test strips
By designing a test strip cutting device and adopting a cutting method using height adjustment blocks, gear transmission, and cylinder drive, the problems of low production efficiency and high cost of test strips were solved. This achieved automated cutting and precise positioning, improving production efficiency and reducing labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI XINSHENGSHI CHEM TECH CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-06-05
AI Technical Summary
Existing technologies have low production efficiency and high costs for test strips, and cannot achieve automated cutting and assembly.
A test strip cutting device was designed, including a worktable, a cutting device, a rotating shaft, a pressure roller, a cutting blade, and a collection box. The height of the pressure roller is adjusted by a height adjustment block, and the upper blade is driven by gear transmission and a cylinder to achieve fixed-distance cutting. The slider and groove are used for precise positioning, and the blunted acute angle structure improves the cutting accuracy. The paper is divided by a circular ring.
It enables automated cutting of test strips, improves production efficiency, reduces labor costs, and ensures cutting accuracy and neat stacking of paper.
Smart Images
Figure CN224324870U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reagent paper production technology, and in particular to a cutting device for test strips. Background Technology
[0002] The technique of detecting the presence of analytes in samples using the principle of immunobinding reactions is widely used in various fields. It can be used to detect analytes in various biological samples (saliva, blood, urine, serum, sweat, etc.) to monitor diseases and human health conditions (early pregnancy, tumors, infectious diseases, drugs, etc.). Many such tests can be performed on solid matrix materials, such as commonly used transverse flow solid-phase matrix materials, glass or plastic porous disks, immunochromatographic devices, etc. Alternatively, these tests can be performed using test strips. During the production of test strips, substances that react with the analyte (such as antigens or antibodies) are processed onto large sheets, which are then cut into individual test strips. In some tests, for ease of self-testing, the test strips are placed in a test plate. Especially when simultaneously testing multiple components of the same sample, multiple test strips testing different components are mounted on a single test plate.
[0003] In current test strip production, sheets are typically cut into individual strips using a manually operated cutting machine. However, manually cut strips require manual assembly of the test plates, which is inefficient and costly. Therefore, many assembly processes now attempt to use automated machines to improve efficiency and reduce labor costs. However, this cutting method is not suitable for automated test strip production. Utility Model Content
[0004] The purpose of this invention is to provide a test strip cutting device to solve the problems existing in the prior art.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] A test strip cutting device includes a worktable with a cutting mechanism on top. The cutting mechanism includes a rotating shaft, a pressure roller, a cutting blade, and a collection box. A base is fixedly installed on the top left side of the worktable. A bearing seat is symmetrically arranged at the front and rear of the base. Both ends of the rotating shaft pass through the corresponding bearing seats. Height adjustment blocks are provided at both ends of the base. Bearings are fitted at both ends of the pressure roller and are fixedly connected to the height adjustment blocks. The collection box is fixedly installed on the top left side of the worktable. The cutting blade is located on the top of the collection box and includes a lower blade plate, an upper blade plate, and a support plate. The lower blade plate is fixedly installed on the top of the collection box. A mounting frame is fixedly installed on the top left side of the worktable, and a cylinder is fixedly installed on the top of the mounting frame. The upper blade plate is fixedly installed on the lifting rod of the cylinder, and the cylinder drives the upper blade plate to move up and down. The upper and lower blade plates cooperate to form a cutting structure. The support plate is fixedly installed on the top right side of the lower blade plate, and the right end of the support plate extends to the bottom of the rotating shaft.
[0007] By adopting the above technical solution, the height adjustment block can adjust the height of the pressure roller, making the gap between the surface of the pressure roller and the surface of the rotating shaft adjustable, which is suitable for paper of different thicknesses. When the rotating shaft is driven to rotate by the drive device, the rotating shaft and the pressure roller cooperate to convey the roll of paper. The roll of paper falls from the right side through the gap between the top of the rotating shaft and the bottom of the pressure roller, and then falls onto the tray. It is guided by the tray to slide to the top of the lower blade plate. After a certain period of time, the cylinder drives the upper blade plate to descend and then reset once, realizing the fixed-distance cutting of the material strip. Since the rotation speed of the rotating shaft is fixed, the fixed-distance cutting can be achieved by controlling the working interval of the cylinder through the cycle timer switch. Moreover, the paper after cutting needs to be slit again, so high precision control is not required.
[0008] In a further embodiment, a drive motor is fixedly installed at the rear end of the bearing seat on the rear side of the base. A drive gear is sleeved on the output shaft of the drive motor, and a driven gear located on the rear side of the bearing seat is sleeved at the rear end of the rotating shaft. The drive gear meshes with the driven gear.
[0009] By adopting the above technical solution, the accuracy of gear transmission is more reliable. Compared with the traditional belt transmission method, gear control is more suitable in this solution.
[0010] In a further embodiment, rectangular blocks are provided at both the front and rear ends of the left side of the lower blade plate, and a vertically penetrating groove is provided on the side of the two rectangular blocks that are close to each other. Slider blocks corresponding to the grooves are provided on the front and rear sides of the upper blade plate. The sliders are integrally formed with the upper blade plate, and the bottom of the slider is located below the bottom of the upper blade plate. The bottom periphery of the slider is provided with a blunted acute angle structure.
[0011] By adopting the above technical solution, since the upper and lower blades work together, the movement accuracy of the upper blade needs to be carefully controlled to avoid insufficient precision during cutting, which could prevent the paper from being cut. The cooperation between the slider and the groove guides and limits the positioning accuracy. The blunted structure is used for guidance, and the slider enters the groove first, so that the bottom of the upper blade can contact the top of the lower blade to form the cutting function. During use, as the number of cuttings increases, the right edge of the bottom of the upper blade (which acts as a cutting edge) and the left edge of the top of the lower blade (which also acts as a cutting edge) will wear. At this time, simply grinding off a layer from the bottom of the upper blade and a layer from the top of the lower blade will restore them.
[0012] In a further embodiment, the bottom of both the upper and lower blades are sloped, the left side of the bottom of the upper blade is higher than the right side, and the left side of the top of the lower blade is higher than the right side.
[0013] By adopting the above technical solution, the beveled surface makes the ridges of the upper and lower blades more sharp, enabling fast cutting and reducing burrs.
[0014] In a further embodiment, the top of the collection box is completely open, the bottom of the collection box is set as a slope, and the left side of the bottom of the collection box is lower than the right side of the bottom. The left end of the collection box is completely open, the top of the collection box is completely open, and a plurality of positioning holes are provided on the left side of the bottom of the collection box, and positioning posts are detachably inserted into the positioning holes.
[0015] By adopting the above technical solution, multiple positioning holes are set at intervals. After the positioning posts are inserted, they play a role in blocking the cut paper. The sloping bottom of the collection box allows the cut paper to be automatically stacked neatly.
[0016] In a further embodiment, the pressure roller is provided with a plurality of rings at equal intervals along the axial direction of the pressure roller.
[0017] By adopting the above technical solution, the outer edge of the ring is made into a sharp structure, so that the paper is cut and divided into strips by the ring when it passes through the space between the top of the rotating shaft and the bottom of the pressure roller, so that the device can fully realize the automatic cutting of reagent paper.
[0018] In summary, this utility model has the following beneficial effects:
[0019] 1. The height of the pressure roller can be adjusted by the height adjustment block, making the gap between the surface of the pressure roller and the surface of the rotating shaft adjustable. This is suitable for paper of different thicknesses. When the rotating shaft is driven to rotate by the drive device, the rotating shaft and the pressure roller cooperate to convey the roll of paper. The roll of paper falls from the right side through the gap between the top of the rotating shaft and the bottom of the pressure roller, and then falls onto the tray. It is guided by the tray to slide to the top of the lower blade plate. After a certain period of time, the cylinder drives the upper blade plate to descend and then reset once, realizing the fixed-distance cutting of the material strip. Since the rotation speed of the rotating shaft is fixed, the working interval of the cylinder can be controlled by the cycle timer switch to achieve fixed-distance cutting. The paper after cutting needs to be slit again, so a high precision control effect is not required.
[0020] 2. The upper and lower blades work together, so the movement accuracy of the upper blade needs to be carefully controlled to avoid insufficient precision during cutting, which could prevent the paper from being cut. The slider and the groove guide and limit the positioning accuracy. The blunted structure is used for guidance, and the slider enters the groove first, so that the bottom of the upper blade can contact the top of the lower blade to form the cutting function. During use, as the number of cuts increases, the right edge of the bottom of the upper blade (which acts as a cutting edge) and the left edge of the top of the lower blade (which also acts as a cutting edge) will wear. At this time, simply grind off a layer from the bottom of the upper blade and a layer from the top of the lower blade to restore them. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram illustrating the structure of the pressure roller in Embodiment 2 of this utility model.
[0023] In the diagram, 1. Workbench; 2. Cutting device; 21. Rotary shaft; 22. Pressure roller; 23. Cutting blade; 231. Lower blade plate; 232. Upper blade plate; 233. Support plate; 3. Height adjustment block; 24. Collection box; 35. Height adjustment block; 4. Mounting bracket; 5. Cylinder; 6. Drive motor. Detailed Implementation
[0024] The present invention will be further described in detail below with reference to the accompanying drawings.
[0025] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.
[0026] Example 1:
[0027] like Figures 1-2 As shown, a test strip cutting device includes a workbench 1, a cutting device 2 on the top of the workbench 1, and a rotating shaft 21, a pressure roller 22, a cutting blade 23, and a collection box 24. A base is fixedly installed on the top left side of the workbench 1, and a bearing seat is symmetrically arranged at the front and back of the base. The front and back ends of the rotating shaft 21 are both inserted into the bearing seats at corresponding positions. Height adjustment blocks 3 are provided at both the front and back ends of the base. Bearings are sleeved on both ends of the pressure roller 22, and the bearings are fixedly connected to the height adjustment blocks 3. The collection box 24 is fixedly installed on the top left side of the workbench 1. The cutting blade 23 is located on top of the collection box 24. The cutting blade 23 includes a lower blade plate 231, an upper blade plate 232, and a support plate 233. The lower blade plate 231 is fixedly installed on the top of the collection box 24. A mounting bracket 4 is fixedly installed on the top left side of the workbench 1. A cylinder 5 is fixedly installed on the top of the mounting bracket 4. The upper blade plate 232 is fixedly installed on the lifting rod of the cylinder 5. The cylinder 5 drives the upper blade plate 232 to move up and down. The upper blade plate 232 and the lower blade plate 231 cooperate to form a cutting structure. The support plate 233 is fixedly installed on the top right side of the lower blade plate 231. The right end extends to the bottom of the rotating shaft 21; a drive motor 6 is fixedly installed at the rear end of the bearing seat on the rear side of the base, and a drive gear is sleeved on the output shaft of the drive motor 6. A driven gear located on the rear side of the bearing seat is sleeved at the rear end of the rotating shaft 21, and the drive gear meshes with the driven gear; rectangular blocks are provided at both the front and rear ends of the left side of the lower blade plate 231, and a vertically penetrating groove is provided on the side of the two rectangular blocks that are close to each other. Slider blocks corresponding to the grooves are provided on the front and rear sides of the upper blade plate 232. The sliders are integrally formed with the upper blade plate 232, and the bottom of the sliders is located at the bottom of the upper blade plate 232. Below, the bottom periphery of the slider is provided with an acute-angled chamfered structure; the bottom of the upper blade plate 232 and the bottom of the lower blade plate 231 are both inclined surfaces, the left side of the bottom of the upper blade plate 232 is higher than the right side, and the left side of the top of the lower blade plate 231 is higher than the right side; the top of the collection box 24 is completely open, the bottom of the collection box 24 is set as an inclined surface, and the left side of the bottom of the collection box 24 is lower than the right side, the left end of the collection box is completely open, the top of the collection box 24 is completely open, and the bottom left side of the collection box 24 is provided with multiple positioning holes, and positioning pins are detachably inserted into the positioning holes.
[0028] Specific implementation process: The height of the pressure roller can be adjusted by the height adjustment block, so that the gap between the surface of the pressure roller and the surface of the rotating shaft is adjustable, which is suitable for paper of different thicknesses. When the rotating shaft is driven to rotate by the drive device, the rotating shaft and the pressure roller cooperate to transport the roll of paper. The roll of paper falls from the right side through the gap between the top of the rotating shaft and the bottom of the pressure roller, and then falls onto the tray. It is guided by the tray to slide to the top of the lower blade plate. After a certain period of time, the cylinder drives the upper blade plate to descend and then reset once, realizing the fixed-distance cutting of the material strip. Since the rotation speed of the rotating shaft is fixed, the working interval of the cylinder can be controlled by the cycle timer switch to achieve fixed-distance cutting. After the paper is cut, it needs to be slit again, so a high precision control effect is not required.
[0029] The height adjustment block includes a rectangular frame, which is vertically positioned. Inside the rectangular frame, a structural block is slidably mounted. Multiple return springs are located at the bottom of the structural block, with their tops only touching the bottom of the structural block. A threaded hole runs vertically through the center of the top of the rectangular frame. A screw spirals downwards into the threaded hole and then engages with the top of the structural block. During use, only the top of the structural block needs to be restricted, as the paper exerts an upward reaction force on the pressure roller during compression.
[0030] Example 2: Multiple rings are evenly spaced along the axial direction of the pressure roller 22. The outer edges of the rings are made into sharp structures, so that the paper is cut and divided into strips by the rings when passing through the space between the top of the rotating shaft and the bottom of the pressure roller, so that this device can fully realize the automatic cutting of reagent paper.
[0031] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.
[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A test strip cutting device, characterized in that: The system includes a workbench (1), a cutting device (2) on the top of the workbench (1), a rotating shaft (21), a pressure roller (22), a cutting blade (23), and a collection box (24). A base is fixedly installed on the top left side of the workbench (1). A bearing seat is symmetrically arranged at the front and back of the base. The front and back ends of the rotating shaft (21) are both inserted into the bearing seats at corresponding positions. Height adjustment blocks (3) are provided at both the front and back ends of the base. Bearings are fitted at both ends of the pressure roller (22). The bearings are fixedly connected to the height adjustment blocks (3). The collection box (24) is fixedly installed on the top left side of the workbench (1). The cutting blade (23) is located on the top of the collection box (24). The cutting blade (23) includes a lower blade plate (231), an upper blade plate (232), and a support plate (233). The lower blade plate (231) is fixedly installed on the top of the collection box (24). A mounting bracket (4) is fixedly installed on the top left side of the workbench (1). A cylinder (5) is fixedly installed on the top of the mounting bracket (4). The upper blade plate (232) is fixedly installed on the lifting rod of the cylinder (5). The cylinder (5) is used to drive the upper blade plate (232) to move up and down. The upper blade plate (232) and the lower blade plate (231) cooperate to form a cutting structure. The support plate (233) is fixedly installed on the top right side of the lower blade plate (231). The right end of the support plate (233) extends to the bottom of the rotating shaft (21).
2. The test strip cutting device according to claim 1, characterized in that: A drive motor (6) is fixedly installed on the rear end of the bearing seat on the rear side of the base. A drive gear is sleeved on the output shaft of the drive motor (6). A driven gear located on the rear side of the bearing seat is sleeved on the rear end of the rotating shaft (21). The drive gear meshes with the driven gear.
3. The test strip cutting device according to claim 1, characterized in that: The lower blade (231) has rectangular blocks at both the front and rear ends on the left side. A through groove is provided on the side of the two rectangular blocks that are close to each other. The upper blade (232) has sliders corresponding to the grooves on the front and rear sides. The sliders are integrally formed with the upper blade (232). The bottom of the slider is located below the bottom of the upper blade (232). The bottom edge of the slider has a blunted acute angle structure.
4. The test strip cutting device according to claim 3, characterized in that: The bottom of the upper blade (232) and the bottom of the lower blade (231) are both inclined surfaces. The left side of the bottom of the upper blade (232) is higher than the right side, and the left side of the top of the lower blade (231) is higher than the right side.
5. The test strip cutting device according to claim 1, characterized in that: The top of the collection box (24) is completely open, the bottom of the collection box (24) is set as a slope, and the left side of the bottom of the collection box (24) is lower than the right side of the bottom. The left end of the collection box (24) is completely open, the top of the collection box (24) is completely open, and multiple positioning holes are provided on the left side of the bottom of the collection box (24). Positioning pins are detachably inserted into the positioning holes.
6. The test strip cutting device according to claim 1, characterized in that: Multiple rings are evenly spaced along the axial direction of the pressure roller (22).