A chlorinated polyethylene crystal point detection device

Abstract

The present invention is applicable to the technical field of detection and analysis devices, and provides a chlorinated polyethylene crystal point detection device, including a box body, a concave mirror, an LED lamp, a clamp, a convex lens and an imaging counting area are sequentially arranged in the box body, an opening is provided on the box body to facilitate the entry and exit of the clamp, a door is provided on the opening, and the LED lamp is arranged at the focus of the concave mirror; the clamp is slidably connected in a fixed groove, and there are two fixed grooves, which are symmetrically arranged at the inner top and inner bottom of the box body, and the distance between the fixed groove and the convex lens is greater than 1 times the focal length of the convex lens and less than 2 times the focal length of the convex lens; the clamp is provided with a plurality of clamping components. By this, the beneficial effects of the present invention are: it can effectively reduce the identification error, greatly improve the accuracy of the detection, and the sample is easy to install.

Description

Technical Field

[0001] The invention relates to the technical field of detection and analysis devices, and in particular to a chlorinated polyethylene crystal point detection device. Background Art

[0002] Chlorinated polyethylene is a new type of polymer elastomer material, which is obtained by chlorinating polyethylene and has good chemical stability. Since the molecular chain contains unchlorinated polyethylene segments, chlorinated polyethylene has properties between rubber and plastic, and is widely used in rubber and plastic production. At present, chlorinated polyethylene is generally produced by suspension method, solid phase method and solvent method. The solvent method is rarely used due to serious pollution. The other two methods are both produced by heterogeneous methods. During the polyethylene chlorination reaction, due to the differences in chlorination conditions, reaction implementation methods and raw materials, there will be large differences in the distribution of chlorine atoms on the molecular chain and residual crystallinity. These structural differences can be manifested as different physical properties and mechanical properties in polymer applications.

[0003] In the application of chlorinated polyethylene, chlorinated polyethylene for specific purposes is not only required to have suitable physical properties and mechanical properties, but also has certain requirements for the crystal point of chlorinated polyethylene, because the crystal point not only affects the appearance of the polymer, but is also an important factor affecting the tensile strength of the product. In traditional detection technology, the crystal point of chlorinated polyethylene is generally measured by the method of pressing the sheet on the open mill and manually marking the area. Due to the influence of factors such as ambient light, counting distance, and human eye recognition, the error of crystal point detection is large, especially some smaller crystal points, which are easy to be missed. Although with the development of science and technology, there are some devices on the market that use computer technology to detect film defects online, but these devices are expensive and suitable for assembly line detection. They are not practical for small area and multi-type sample detection such as chlorinated polyethylene.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0005] In view of the above-mentioned defects, the purpose of the present invention is to provide a chlorinated polyethylene crystal point detection device, and the beneficial effects of the present invention are: it can effectively reduce the identification error, greatly improve the accuracy of detection, and facilitate sample installation.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a chlorinated polyethylene crystal point detection device, comprising a box body, wherein a concave mirror, an LED lamp, a clamp, a convex lens and an imaging counting area are sequentially arranged in the box body, an opening that can facilitate the entry and exit of the clamp is provided on the box body, a door is provided on the opening, and the LED lamp is arranged at the focus of the concave mirror; the clamp is slidably connected in a fixed groove, and the fixed groove is provided with two, which are symmetrically arranged at the inner top and inner bottom of the box body, and the distance between the fixed groove and the convex lens is greater than 1 times the focal length of the convex lens and less than 2 times the focal length of the convex lens; the clamp comprises two symmetrically arranged clamping plates, the clamping plates can be slidably connected in the fixed groove, two connecting rods are fixedly connected between the two clamping plates, the two connecting rods and the two clamping plates form a rectangular frame shape, and recesses are provided on the opposite side surfaces of the two clamping plates, the recess is located between the two connecting rods, two inner side walls are formed in the recess, and a plurality of clamping components are provided on one of the inner side walls.

[0007] According to a chlorinated polyethylene crystal point detection device of the present invention, the clamping assembly includes a fixed block fixedly connected to an inner side wall of the clamping plate, a first cavity is provided inside the fixed block, a pressure block is provided inside the first cavity, a second cavity is provided inside the pressure block, an adjusting rod is passed through the second cavity, the adjusting rod passes downward through the second cavity, the first cavity and the clamping plate in sequence and then connects to a threaded block, a thread is provided on the outer periphery of the threaded block, a receiving hole capable of accommodating the threaded block is provided on the outer side of the clamping plate, an internal thread is provided inside the accommodating hole which cooperates with the outer peripheral thread of the threaded block, a first elastic element is provided on the adjusting rod between the pressure block and the first cavity, a second elastic element is provided on the adjusting rod between the threaded block and the clamping plate, and the elastic force of the first elastic element is less than the elastic force of the second elastic element.

[0008] According to a chlorinated polyethylene crystal point detection device of the present invention, an imaging curtain is provided on the side of the imaging counting area close to the convex lens, and the distance from the imaging curtain to the convex lens is greater than 2 times the focal length of the convex lens.

[0009] According to the chlorinated polyethylene crystal point detection device of the present invention, a counting area is provided on the outer layer of the imaging counting area.

[0010] According to a chlorinated polyethylene crystal point detection device of the present invention, the LED lamp is a unidirectional monochrome LED lamp.

[0011] According to a chlorinated polyethylene crystal point detection device of the present invention, the focal length of the concave mirror is 10 cm, that is, the distance between the LED lamp and the concave mirror is 10 cm, the focal length of the convex lens is 10 cm, the fixing groove is arranged at 12 cm on the left side of the convex lens, and the imaging curtain is arranged at 60 cm on the right side of the convex lens.

[0012] The purpose of the present invention is to provide a chlorinated polyethylene crystal point detection device, which can effectively reduce the identification error caused by ambient light, observation distance, too small crystal point, etc. by setting a concave mirror, an LED lamp, a clamp, a convex lens and an imaging counting area, greatly improve the accuracy of detection, and is easy to operate by setting a clamping component. On the one hand, it can provide sufficient clamping force to fix the sample, and on the other hand, it can provide a buffer to prevent the sample from being crushed. The beneficial effects of the present invention are: it can effectively reduce the identification error, greatly improve the accuracy of detection, and the sample is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 is a schematic diagram of the gripper structure;

[0015] Figure 3 is a schematic diagram of the side view structure of the splint;

[0016] Figure 4 is a schematic diagram of the structure of the clamping assembly;

[0017] Figure 5 It is a schematic diagram of the box structure;

[0018] In the figure: 1-box, 11-opening, 2-concave mirror, 3-LED lamp, 4-clamp, 41-clamp, 42-connecting rod, 43-clamping assembly, 431-fixed block, 432-first cavity, 433-pressing block, 434-second cavity, 435-buffer pad, 436-adjusting rod, 437-first elastic element, 438-second elastic element, 439-threaded block, 5-fixing groove, 6-convex lens, 7-imaging counting area, 71-imaging curtain, 72-counting area. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0021] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figures 1 to 5 The present invention provides a chlorinated polyethylene crystal point detection device, comprising a box 1, wherein a concave mirror 2, an LED lamp 3, a clamp 4, a convex lens 6 and an imaging counting area 7 are sequentially arranged in the box 1, and an opening 11 is provided on the box 1 for convenient entry and exit of the clamp 4, and a door is provided on the opening 11 to ensure the light sealing of the box 1. The LED lamp 3 is arranged at the focus of the concave mirror 2, and the clamp 4 is convenient for loading the sample to be detected. When in use, the sample can be flattened on the clamp 4 and clamped. The clamp 4 is slidably connected in the fixing groove 5, and there are two fixing grooves 5, which are symmetrically arranged at the inner top and the inner bottom of the box 1. The distance between the fixing groove 5 and the convex lens 6 is greater than 1 times the focal length of the convex lens and less than 2 times the focal length of the convex lens. An imaging curtain 71 is provided on the side of the imaging counting area 7 close to the convex lens 6, and the distance between the imaging curtain 71 and the convex lens 6 is greater than 2 times the focal length of the convex lens 6. For the convenience of counting, a counting area 72 is provided on the outer layer of the imaging counting area 7.

[0023] The clamp 4 includes two symmetrically arranged clamps 41, which can be slidably connected in the fixing groove 5. Two connecting rods 42 are fixed between the two clamps 41. The two connecting rods 42 and the two clamps 41 form a rectangular frame shape. Recesses are provided on the opposite side surfaces of the two clamps 41. The recess is located between the two connecting rods 42. Two inner side walls are formed in the recess. One of the inner side walls is provided with a plurality of clamping components 43. The clamping components 43 can clamp and fix the sample to be tested on the other inner side wall.

[0024] The clamping assembly 43 includes a fixing block 431 fixed to an inner wall of the clamping plate 41, a first cavity 432 is provided inside the fixing block 431, a pressing block 433 is provided inside the first cavity 432, the shape of the pressing block 433 is an inverted T-shape, the shape of the first cavity 432 matches the shape of the pressing block 433, so that the pressing block 433 can be prevented from sliding out of the first cavity 432, the top of the pressing block 433 extends out of the first cavity 432 and is connected to the buffer pad 435, a second cavity 434 is provided inside the pressing block 433, an adjusting rod 436 is inserted into the second cavity 434, the top of the adjusting rod 436 is T-shaped, the shape of the second cavity 434 matches the adjusting rod 436, so that the adjusting rod 436 can be prevented from sliding out of the second cavity 434 The adjusting rod 436 passes downward through the second cavity 434, the first cavity 432 and the clamping plate 41 in sequence and then connects to the threaded block 439. The threaded block 439 is provided with a thread on its outer periphery. The outer side of the clamping plate 41 is provided with a receiving hole 411 that can accommodate the threaded block 439. The inside of the receiving hole 411 is provided with an internal thread that cooperates with the outer peripheral thread of the threaded block 439, so that the threaded block 439 can be screwed into the receiving hole 411 and fixed in the receiving hole 411. The adjusting rod 436 located between the pressing block 433 and the first cavity 432 is provided with a first elastic element 437, and the adjusting rod 436 between the threaded block 439 and the clamping plate 41 is provided with a second elastic element 438. The elastic force of the first elastic element 437 is less than the elastic force of the second elastic element 438.

[0025] The first elastic element 437 and the second elastic element 438 are both springs, which are simple and practical.

[0026] During operation, when the threaded block 439 is screwed into the accommodating hole 411, it presses the second elastic element 438 and drives the adjusting rod 436 to move as a whole toward the fixing block 431. At this time, one end of the adjusting rod 436 is located in the second cavity 434 and does not give any force to the pressing block 433, while the first elastic element 437 pushes the pressing block 433 to move to the right, thereby causing the buffer pad 435 fixed to the pressing block 433 to move to the right, that is, the buffer pad 435 of the clamping assembly 43 is pressed against the other inner wall of the clamping plate 41, so as to fix the sample to be tested. At this time, the elastic force of the second elastic element 438 can provide sufficient clamping force to fix the sample on the one hand, and can provide Buffering to prevent the sample from being crushed; when the sample needs to be taken down and replaced, the threaded block 439 is screwed out of the receiving hole 411. Since the elastic force of the first elastic element 437 is less than the elastic force of the second elastic element 438, the second elastic element 438 overcomes the elastic force of the first elastic element 437 and drives the adjustment rod 436 and the threaded block 439 to move to the left. At the same time, the T-shaped structure at the top of the adjustment rod 436 enables the adjustment rod 436 to pull the pressing block 433 to compress the first elastic element 437 to move to the left. At this time, the buffer pad 435 fixed to the pressing block 433 moves to the left, that is, the buffer pad 435 is away from the other inner side wall of the clamping plate 41, and the sample can be taken out at this time. The first elastic element 437 cooperates with the second elastic element 438 to make the pressing block 433 have a buffer whether it is extended or retracted, which is safe to operate and convenient for fixing the sample.

[0027] When detecting the crystal points of chlorinated polyethylene, first prepare a chlorinated polyethylene sheet according to the detection requirements, then fix it on the sample holder 4 and insert it into the fixing groove 5. An LED lamp 3 is provided at the focus of the concave mirror 2. After the light is reflected by the concave mirror 2, it becomes parallel light and vertically irradiates the chlorinated polyethylene sheet of the sample holder 4. The light passes through the chlorinated polyethylene sheet and is projected onto the imaging screen 71 after passing through the convex lens 6. Since the crystal points cannot transmit light, the image formed by the crystal points can be clearly presented on the imaging screen 71.

[0028] As an embodiment, the focal length of the concave mirror is 10 cm, that is, the distance between the LED lamp 3 and the concave mirror 2 is 10 cm, the focal length of the convex lens 6 is 10 cm, the fixed groove 5 is set at 12 cm on the left side of the convex lens 6, according to the convex lens imaging law formula: 1 / u+1 / v=1 / f (wherein: u-object distance, v-image distance, f-focal length), the imaging curtain 71 is set at 60 cm on the right side of the convex lens 6, and the crystal points on the chlorinated polyethylene can be magnified 5 times on the imaging curtain 71. For the convenience of counting, the outer layer of the imaging counting area 7 is provided with a counting area 72, which is a glass sheet with a reference grid in this embodiment. The glass sheet can be counted with a whiteboard pen and can be erased and reused. Through this embodiment, the sample fixed position detection, the crystal point can be magnified 5 times, which can effectively reduce the discrimination error caused by ambient light, observation distance, and too small crystal points, and greatly improve the accuracy of detection.

[0029] Preferably, the LED lamp 3 is a unidirectional monochromatic LED lamp, which has the characteristics of high precision, high resolution, high stability and low astigmatism, making the crystal points clearer at the edge of the observation and counting area, with greater color difference and easier to distinguish.

[0030] In summary, the present invention can effectively reduce the discrimination error caused by ambient light, observation distance, too small crystal point, etc. by setting a concave mirror, LED light, clamp, convex lens and imaging counting area, greatly improve the accuracy of detection, and by setting a clamping component, it is easy to operate. On the one hand, it can provide sufficient clamping force to fix the sample, and on the other hand, it can provide a buffer to prevent the sample from being crushed. The beneficial effects of the present invention are: it can effectively reduce the discrimination error, greatly improve the accuracy of detection, and the sample is easy to install.

[0031] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A chlorinated polyethylene crystal point detection device, characterized in that: It comprises a box body, in which a concave mirror, an LED lamp, a clamp, a convex lens and an imaging counting area are arranged in sequence, an opening is arranged on the box body to facilitate the entry and exit of the clamp, a door is arranged on the opening, and the LED lamp is arranged at the focus of the concave mirror; The clamp is slidably connected in the fixing groove, and two fixing grooves are provided, which are symmetrically arranged at the inner top and inner bottom of the box body, and the distance between the fixing groove and the convex lens is greater than 1 times the focal length of the convex lens and less than 2 times the focal length of the convex lens; The clamp comprises two symmetrically arranged clamping plates, the clamping plates can be slidably connected in the fixing groove, two connecting rods are fixedly connected between the two clamping plates, the two connecting rods and the two clamping plates form a rectangular frame shape, and notches are provided on opposite side surfaces of the two clamping plates, the notches are located between the two connecting rods, two inner side walls are formed in the notches, and a plurality of clamping components are provided on one of the inner side walls; The clamping assembly includes a fixed block fixed to an inner wall of the clamping plate, a first cavity is provided inside the fixed block, a pressure block is provided in the first cavity, the shape of the pressure block is an inverted T-shape, the shape of the first cavity matches the shape of the pressure block, so as to prevent the pressure block from sliding out of the first cavity, and the top of the pressure block extends out of the first cavity and is connected to a buffer pad; a second cavity is provided inside the pressure block, an adjusting rod is passed through the second cavity, the top of the adjusting rod is T-shaped, and the shape of the second cavity matches the adjusting rod, so as to prevent the adjusting rod from sliding out of the second cavity, The adjusting rod passes downward through the second cavity, the first cavity and the clamping plate in sequence and then is connected to the threaded block, the threaded block is provided with a thread on its outer periphery, the clamping plate is provided with a receiving hole on its outer side which can accommodate the threaded block, the threaded block can be screwed into the receiving hole and fixed in the receiving hole, the receiving hole is provided with an internal thread which cooperates with the outer peripheral thread of the threaded block, the adjusting rod located between the pressing block and the first cavity is provided with a first elastic element, the adjusting rod between the threaded block and the clamping plate is provided with a second elastic element, and the elastic force of the first elastic element is less than the elastic force of the second elastic element.

2. A chlorinated polyethylene crystal point detection device according to claim 1, characterized in that: An imaging curtain is provided on one side of the imaging counting area close to the convex lens, and the distance from the imaging curtain to the convex lens is greater than 2 times the focal length of the convex lens.

3. A chlorinated polyethylene crystal point detection device according to claim 1, characterized in that: The outer layer of the imaging counting area is provided with a counting area.

4. A chlorinated polyethylene crystal point detection device according to claim 1, characterized in that: The LED lamp is a unidirectional single-color LED lamp.

5. A chlorinated polyethylene crystal point detection device according to claim 2, characterized in that: The focal length of the concave mirror is 10 cm, that is, the distance between the LED lamp and the concave mirror is 10 cm, the focal length of the convex lens is 10 cm, the fixing groove is arranged at 12 cm on the left side of the convex lens, and the imaging curtain is arranged at 60 cm on the right side of the convex lens.

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