High-performance solution stretching device combining high-temperature resistance, corrosion resistance and X-ray scattering

Abstract

The invention discloses a high-performance solution stretching device combining high-temperature resistance, corrosion resistance and X-ray scattering. The high-performance solution stretching device comprises a base and two guide rails fixedly arranged on the base, the stretching mechanism is arranged between the two guide rails in a sliding manner and is used for stretching the film; the driving mechanism is fixedly mounted in the middle of the base and used for driving the stretching mechanism to move between the two guide rails; the clamping assembly is fixedly installed on the stretching mechanism and used for clamping and fixing a film to be stretched; and the corrosion-resistant high-temperature cover assembly is fixedly arranged on the base. A spring structure is arranged in the clamp assembly of the device, abutting and fixing are carried out through the locking and abutting screw rod, when the locking clamp assembly needs to be disassembled, after the locking and abutting screw rod is directly unscrewed, the locking and clamping piece can be bounced off under the elastic force of the spring, disassembling and replacing of the locking and clamping piece are facilitated, follow-up maintenance and overhaul are facilitated, clamping is stable, and loosening and falling-off are not prone to occurring in the stretching process.

Description

Technical Field

[0001] The invention relates to the technical field of polymer film diffraction test, in particular to a high-performance solution stretching device that is resistant to high temperature and corrosion and combined with X-ray scattering. Background Art

[0002] As the core material of polarizer, polyvinyl alcohol film is mainly composed of light atoms such as carbon, hydrogen, and oxygen. It has high transparency and good ductility, and has excellent iodine adsorption capacity and good film-forming properties. These characteristics make polyvinyl alcohol film widely used in optical experiments, such as wide-angle diffraction and small-angle diffraction. Polyvinyl alcohol film can play a polarizing role because it can adsorb dichroic molecules. When untreated, the molecular chains of polyvinyl alcohol are distributed in a disordered state, and the iodine molecules adsorbed on the film are also in a disordered state. After the polyvinyl alcohol film is stretched and oriented, the molecular chains and the adsorbed iodine molecules are gradually arranged in an orderly manner, giving the polyvinyl alcohol film a polarizing function, thereby determining the key optical indicators of the polarizer, such as polarization performance, transmittance and hue.

[0003] In the tensile test, the polyvinyl alcohol film usually needs to be processed under high temperature conditions. The commonly used stretching device is mainly composed of a stretching mechanism, a clamping mechanism and a heating system. Driven by a motor, the clamping mechanism clamps the polyvinyl alcohol film and performs biaxial stretching, while measuring the tensile force. However, this type of equipment has many problems in practical applications. Since the stretching of the polyvinyl alcohol film needs to be carried out at high temperature for a long time, the stretching device is exposed to a high temperature environment, the equipment failure rate is high, and the high temperature and corrosion resistance are insufficient. In addition, the clamp assembly is usually fixed by bolts, which is inconvenient to disassemble and assemble, increasing the difficulty of maintenance and overhaul. The high temperature during the stretching process may also cause the clamp to loosen or be damaged, further affecting the stability and accuracy of the experiment.

[0004] This situation is not limited to polyvinyl alcohol films. In the wider processing of polymer films, such as the stretching and forming of materials such as polyester, polypropylene, and polyimide, high-temperature operation is a common phenomenon. Although these polymer materials have their own characteristics, they will also encounter problems such as poor equipment temperature resistance, corrosion problems, and loose mechanical fixtures when processed under high temperature conditions. In addition, due to the frequent contact between the equipment and chemical reagents and solutions, the risk of liquid leakage or dumping is also high, which will affect operational safety and increase maintenance costs. Therefore, improving the high temperature resistance and corrosion resistance of the equipment, optimizing the fixture design to prevent falling off, and adding leak prevention measures are urgent issues to be solved in the field of polymer film processing equipment.

[0005] In general, in the process of processing polyvinyl alcohol film and other polymer films under high temperature conditions, the high temperature tolerance, corrosion protection and stability of the fixture of the equipment are important factors affecting the success of the experiment. By improving the equipment materials and design and enhancing these key performances, the service life and reliability of the processing equipment can be effectively improved, while reducing the equipment failure rate and maintenance costs. Summary of the invention

[0006] The purpose of the present invention is to provide a high-performance solution stretching device that is resistant to high temperature and corrosion and combines with X-ray scattering to solve the problems of high failure rate during use of the existing solution stretching device and inconvenient disassembly of the clamp assembly mentioned in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A high-performance solution stretching device that is resistant to high temperature and corrosion and combined with X-ray scattering, comprising: A base and two guide rails fixedly arranged on the base; A stretching mechanism, which is slidably disposed between the two guide rails and is used for stretching the film; A driving mechanism, which is fixedly mounted in the middle of the base and is used to drive the stretching mechanism to move between the two guide rails; A clamping assembly, which is fixedly mounted on the stretching mechanism and is used to clamp and fix the film to be stretched; A corrosion-resistant high-temperature cover assembly, wherein the corrosion-resistant high-temperature cover assembly is fixedly disposed on the base and is used to isolate the clamping assembly; A detection mechanism, which is fixedly mounted on one side of the base and is used to detect the displacement of the stretching during the stretching process; The outer shell is fixedly arranged on the periphery of the base.

[0008] Preferably, the stretching mechanism comprises a slide and a stretching frame fixedly arranged at the top of the slide, a stretching rod is fixedly arranged on one side of the stretching frame, and the slide is slidably arranged between two guide rails.

[0009] Preferably, the driving mechanism includes two seat bearings and a reduction motor, a transmission screw is rotatably arranged between the two seat bearings, the middle part of the transmission screw is transmission-connected with two screw sliders, the two screw sliders are respectively fixed at the bottom of the two slides, a driven gear is fixedly arranged at one end of the transmission screw, a driving gear is fixedly installed at the output end of the reduction motor, one side of the driving gear is meshingly connected with one side of the driven gear, and the transmission screw is a bidirectional screw.

[0010] Preferably, the clamping assembly includes a clamp seat and a locking slide fixedly arranged on one side of the clamp seat, a locking groove is opened on the inner side of the locking slide, a spring is fixedly arranged at one end of the inner wall of the locking groove, a locking clamp is slidably arranged inside the locking groove, and a locking screw is threadedly connected to the middle part of the front side of the clamp seat.

[0011] Preferably, the locking clamp comprises a lower clamping plate and an upper clamping plate matching the lower clamping plate, a clamping bolt is threadedly connected between the lower clamping plate and the upper clamping plate, and the upper clamping plate and the lower clamping plate are both gradient clamping plates.

[0012] Preferably, the corrosion-resistant high-temperature cover assembly includes a high-temperature resistant bottom shell and a bent plate arranged opposite to the high-temperature resistant bottom shell, a light-through hole is opened in the middle of the bent plate, a bent part is fixedly arranged in the middle of the high-temperature resistant bottom shell, and a temperature-control thermocouple and an electric heating tube are fixedly installed on the inner side wall of the bent plate.

[0013] Preferably, the detection mechanism comprises a distance measuring rail, a displacement sensor is fixedly mounted on one end of the distance measuring rail, a distance measuring slider is slidably arranged in the middle of the distance measuring rail, and the distance measuring slider is fixedly arranged on one end of a slide.

[0014] Preferably, a stretch hood is fixedly provided on the outer side of the high temperature resistant bottom shell, sliding holes are provided on both sides of the stretch hood, and a round through hole is provided in the middle of the stretch hood.

[0015] Preferably, the outer shell includes two side panels arranged opposite to each other, a top sealing cover is fixedly arranged between the two side panels, a top cover hole is opened in the middle of the top sealing cover, a back sealing plate is fixedly arranged on the back of the base, a cooling fan is fixedly arranged on the back sealing plate, a front sealing plate is installed on the front of the base, a bending section is fixedly arranged in the middle of the front sealing plate, and an X-ray light entrance window is arranged in the middle of the bending section.

[0016] Preferably, the X-ray light entrance window, the circular through hole and the light through hole are on the same horizontal line.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The corrosion-resistant high-temperature cover assembly is used to isolate the stretching structure, which significantly improves the high-temperature resistance and radiation protection performance of the entire device, and the overall service life is longer. In the stretching test, the failure rate is lower. The light emitted by the external light source is used to enter the light channel and pass through the film. In this process, the displacement sensor can be used to detect the stretching length, obtain the tension change data during the stretching process and the structural evolution diagram of the film during the stretching process, so as to facilitate the study of the relevant properties of the film and realize the simulation of the stretching process of the polymer sample in the solution. The solution tank has a gradient design to facilitate the discharge of the solution; 2. The clamp assembly has a built-in spring structure, which is fixed by a locking screw. When the locking clamp assembly needs to be disassembled, simply loosen the locking screw, and the locking clamp will pop open under the elastic force of the spring, which is convenient for disassembly and replacement of the locking clamp, and subsequent maintenance and repair. The clamping is stable and it is not easy to loosen or fall off during the stretching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the solution stretching device of the present invention; Figure 2 It is a schematic diagram of the disassembled structure of the solution stretching device of the present invention; Figure 3 It is a front view structural schematic diagram of the base of the present invention; Figure 4 It is a schematic diagram of the internal structure of the solution stretching device of the present invention; Figure 5 It is a structural schematic diagram of the clamp assembly of the present invention; Figure 6 It is a structural schematic diagram of the locking slide of the present invention; Figure 7 It is a schematic diagram of the structure of the gradient solution splint of the present invention; Figure 8 It is a front cross-sectional view of the solution stretching device of the present invention.

[0019] In the figure: 1. base; 2. side plate; 3. top cover; 4. back cover plate; 5. front cover plate; 6. cooling fan; 7. slide frame; 8. stretch cover; 9. guide rail; 10. reduction motor; 11. driving gear; 12. bearing with seat; 13. driven gear; 14. stretch frame; 15. lead screw slider; 16. transmission lead screw; 17. bending section; 18. bending plate; 19. high temperature resistant bottom shell; 20. slide hole; 21. X-ray incident light Window; 22, stretching rod; 23, clamp assembly; 231, clamp seat; 232, locking screw; 233, locking slide; 234, lower clamp; 235, upper clamp; 236, clamping bolt; 237, spring; 238, locking slide; 24, ranging rail; 25, ranging slide; 26, displacement sensor; 27, top cover hole; 28, light hole; 29, bending part; 30, temperature control thermocouple; 31, electric heating tube. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] Example See also Figure 1-8 The present invention provides a high-performance solution stretching device that is resistant to high temperature and corrosion and combined with X-ray scattering, comprising: A base 1 and two guide rails 9 fixedly arranged on the base 1; A stretching mechanism, which is slidably disposed between two guide rails 9 and is used for stretching the film; A driving mechanism, which is fixedly mounted in the middle of the base 1 and is used to drive the stretching mechanism to move between the two guide rails 9; A clamping assembly 23, which is fixedly mounted on the stretching mechanism and is used to clamp and fix the film to be stretched; A corrosion-resistant high-temperature cover assembly, which is fixedly disposed on the base 1 and is used to isolate the clamping assembly 23; A detection mechanism, which is fixedly mounted on one side of the base 1 and is used to detect the displacement of the stretching during the stretching process; The outer shell is fixedly arranged on the periphery of the base 1.

[0024] See also Figure 1 , Figure 3 and Figure 4 The stretching mechanism includes a slide 7 and a stretching frame 14 fixedly arranged at the top of the slide 7, a stretching rod 22 is fixedly arranged on one side of the stretching frame 14, and the slide 7 is slidably arranged between two guide rails 9; The driving mechanism includes two bearings with seats 12 and a reduction motor 10. A transmission screw 16 is rotatably arranged between the two bearings with seats 12. The middle part of the transmission screw 16 is transmission-connected to two screw sliders 15. The two screw sliders 15 are respectively fixedly arranged at the bottom of the two slides 7. A driven gear 13 is fixedly arranged at one end of the transmission screw 16. A driving gear 11 is fixedly installed at the output end of the reduction motor 10. One side of the driving gear 11 is meshed and connected with one side of the driven gear 13. The transmission screw 16 is a bidirectional screw. When this embodiment is in use, during the stretching stage, the reduction motor 10 will drive the driving gear 11 to move, and the driving gear 11 will drive the driven gear 13 to rotate, thereby driving the transmission screw 16 to rotate between the two seat bearings 12. Driven by the transmission screw 16, the two screw sliders 15 will drive the two slides 7 to move closer to or away from each other between the two guide rails 9, and then through the transmission of the stretching rod 22, the two clamping assemblies 23 will move, thereby achieving stretching of the solution, with stable transmission and uniform stretching force.

[0025] See also Figure 4 , Figure 5 and Figure 6 The clamping assembly 23 includes a clamp seat 231 and a locking slide seat 233 fixedly arranged on one side of the clamp seat 231. A locking slide groove 238 is provided on the inner side of the locking slide seat 233. A spring 237 is fixedly arranged at one end of the inner wall of the locking slide groove 238. A locking clamp is slidably arranged inside the locking slide groove 238. A locking screw 232 is threadedly connected to the middle part of the front side of the clamp seat 231. The locking clamp includes a lower clamp plate 234 and an upper clamp plate 235 matching the lower clamp plate 234. A clamping bolt 236 is threadedly connected between the lower clamp plate 234 and the lower clamp plate 234. Both the lower clamp plate 234 and the lower clamp plate 234 are gradient clamp plates. When this embodiment is in use, the solution is clamped between the upper and lower clamps 234 and fixed by the clamping bolts 236, thereby completing the clamping and fixing of the solution film. During the removal of the locking clamp, the experimenter loosens the locking screw 232. At this time, under the elastic force of the spring 237, the entire locking clamp will pop out from the locking slide 233 close to the clamp seat 231, thereby facilitating the removal of the entire locking clamp and providing convenience for subsequent maintenance and repair.

[0026] See also Figure 2 , Figure 3 , Figure 4 and Figure 7 The corrosion-resistant high-temperature cover assembly includes a high-temperature resistant bottom shell 19 and a bent plate 18 arranged opposite to the high-temperature resistant bottom shell 19, a light-through hole 28 is opened in the middle of the bent plate 18, a bent piece 29 is fixedly arranged in the middle of the high-temperature resistant bottom shell 19, and a temperature-controlling thermocouple 30 and an electric heating tube 31 are fixedly installed on the inner side wall of the bent plate 18; When this embodiment is in use, the stretched solution is placed between the protruding position of the bending part 29 and the bending plate 18. During the entire stretching process, the electric heating tube 31 will heat the solution film to keep it in a relatively soft state at all times, and the temperature control thermocouple 30 will perform overall temperature control.

[0027] See also Figure 4 The detection mechanism includes a distance measuring rail 24, a displacement sensor 26 is fixedly installed at one end of the distance measuring rail 24, a distance measuring slider 25 is slidably arranged in the middle of the distance measuring rail 24, and the distance measuring slider 25 is fixedly arranged at one end of the slide 7; When this embodiment is in use, the slide 7 slides on the slide rail 9, which drives the ranging slider 25 to slide on the ranging rail 24. During the entire stretching process, the displacement sensor 26 measures the displacement change of the ranging slider 25 in real time to reflect the change in stretching force.

[0028] See also Figure 1 and Figure 2 A stretching cover 8 is fixedly arranged on the outer side of the high temperature resistant bottom shell 19, and sliding holes 20 are opened on both sides of the stretching cover 8. A round through hole is opened in the middle of the stretching cover 8. The outer shell includes two side panels 2 arranged opposite to each other, and a top sealing cover 3 is fixedly arranged between the two side panels 2. A top cover hole 27 is opened in the middle of the top sealing cover 3. A back sealing plate 4 is fixedly arranged on the back of the base 1, and a cooling fan 6 is fixedly installed on the back sealing plate 4. A front sealing plate 5 is installed on the front of the base 1, and a bending section 17 is fixedly arranged in the middle of the front sealing plate 5. An X-ray light entrance window 21 is arranged in the middle of the bending section 17. The X-ray light entrance window 21, the round through hole and the light through hole 28 are on the same horizontal line; When the embodiment of the present invention is in use: the light source is an external light emitting device that can emit X-rays. When the tensile performance of the film needs to be tested, the X-rays emitted by the light source will be injected through the X-ray light entrance window 21, and then pass through the circular through hole and the light through hole 28 in sequence to irradiate the stretched solution film. The X-rays are injected perpendicularly to the solution film to complete the incident test. By using the solution stretching device combined with X-ray scattering of this scheme, combined with external X-rays and using experimental methods, the stress-strain curves of the polyvinyl alcohol film during the stretching and recovery processes can be obtained.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-performance solution stretching device that is resistant to high temperature and corrosion and combined with X-ray scattering, characterized in that: include: A base (1) and two guide rails (9) fixedly arranged on the base (1); A stretching mechanism, the stretching mechanism being slidably disposed between the two guide rails (9) and being used for stretching the film; A driving mechanism, the driving mechanism being fixedly mounted in the middle of the base (1) and used for driving the stretching mechanism to move between the two guide rails (9); A clamping assembly (23), wherein the clamping assembly (23) is fixedly mounted on the stretching mechanism and is used to clamp and fix the film to be stretched; A corrosion-resistant high-temperature cover assembly, the corrosion-resistant high-temperature cover assembly being fixedly disposed on the base (1) and used for isolating the clamping assembly (23); A detection mechanism, the detection mechanism is fixedly mounted on one side of the base (1) and is used to detect the magnitude of the displacement during the stretching process; An outer shell, the outer shell being fixedly arranged on the periphery of the base (1).

2. According to claim 1, a high-performance solution stretching device that is resistant to high temperature and corrosion and combined with X-ray scattering, characterized in that: The stretching mechanism comprises a slide (7) and a stretching frame (14) fixedly arranged at the top of the slide (7), a stretching rod (22) being fixedly arranged on one side of the stretching frame (14), and the slide (7) being slidably arranged between two guide rails (9).

3. A high-performance solution stretching device for high temperature resistance, corrosion resistance and X-ray scattering according to claim 2, characterized in that: The driving mechanism comprises two bearing seats (12) and a reduction motor (10); a transmission screw (16) is rotatably arranged between the two bearing seats (12); the middle part of the transmission screw (16) is transmission-connected to two screw sliders (15); the two screw sliders (15) are respectively fixedly arranged at the bottom of two slides (7); a driven gear (13) is fixedly arranged at one end of the transmission screw (16); a driving gear (11) is fixedly installed at the output end of the reduction motor (10); one side of the driving gear (11) is meshingly connected with one side of the driven gear (13); and the transmission screw (16) is a bidirectional screw.

4. The high-performance solution stretching device for high temperature resistance, corrosion resistance and X-ray scattering according to claim 1 is characterized in that: The clamping assembly (23) comprises a clamp seat (231) and a locking slide seat (233) fixedly arranged on one side of the clamp seat (231); a locking slide groove (238) is provided on the inner side of the locking slide seat (233); a spring (237) is fixedly arranged at one end of the inner wall of the locking slide groove (238); a locking clamp is slidably arranged inside the locking slide groove (238); and a locking screw (232) is threadedly connected to the middle part of the front side of the clamp seat (231).

5. The high-performance solution stretching device for high temperature resistance, corrosion resistance and X-ray scattering according to claim 4 is characterized in that: The locking clamp comprises a lower clamping plate (234) and an upper clamping plate (235) matching the lower clamping plate (234), a clamping bolt (236) is threadedly connected between the lower clamping plate (234) and the upper clamping plate (234), and both the lower clamping plate (234) and the upper clamping plate (234) are gradient clamping plates.

6. The high-performance solution stretching device for high temperature resistance, corrosion resistance and X-ray scattering according to claim 1 is characterized by: The corrosion-resistant high-temperature cover assembly comprises a high-temperature resistant bottom shell (19) and a bent plate (18) arranged opposite to the high-temperature resistant bottom shell (19); a light-through hole (28) is opened in the middle of the bent plate (18); a bent piece (29) is fixedly arranged in the middle of the high-temperature resistant bottom shell (19); and a temperature-controlling thermocouple (30) and an electric heating tube (31) are fixedly installed on the inner side wall of the bent plate (18).

7. The high-performance solution stretching device for high temperature resistance, corrosion resistance and X-ray scattering according to claim 2 is characterized in that: The detection mechanism comprises a distance measuring rail (24), one end of which is fixedly mounted with a displacement sensor (26), a middle portion of which is slidably provided with a distance measuring slider (25), and the distance measuring slider (25) is fixedly arranged at one end of a slide frame (7).

8. The high-performance solution stretching device for high temperature resistance, corrosion resistance and X-ray scattering according to claim 6 is characterized by: A stretching cover (8) is fixedly arranged on the outer side of the high temperature resistant bottom shell (19), sliding holes (20) are provided on both sides of the stretching cover (8), and a round through hole is provided in the middle of the stretching cover (8).

9. The high-performance solution stretching device for high temperature resistance, corrosion resistance and X-ray scattering according to claim 8, characterized in that: The outer shell comprises two side panels (2) arranged opposite to each other, a top sealing cover (3) is fixedly arranged between the two side panels (2), a top cover hole (27) is opened in the middle of the top sealing cover (3), a back sealing plate (4) is fixedly arranged on the back of the base (1), a cooling fan (6) is fixedly mounted on the back sealing plate (4), a front sealing plate (5) is mounted on the front of the base (1), a bending section (17) is fixedly arranged in the middle of the front sealing plate (5), and an X-ray light entrance window (21) is provided in the middle of the bending section (17).

10. The high-performance solution stretching device for high temperature resistance, corrosion resistance and X-ray scattering according to claim 9, characterized in that: The X-ray light entrance window (21), the circular through hole and the light through hole (28) are on the same horizontal line.

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