A polymer column surface texture formation research device and experimental method

Abstract

The present invention discloses a device and experimental method for studying the surface texture formation of a polymer cylinder. The device comprises an experimental workbench, a high molecular polymer material cylinder, a cylinder fixing device, a mold fixing device, a customized cylinder heating device, a mold driving device, and a bottom plate of the experimental table; the mold fixing device comprises a customized track, a mold mounting plate, and a flat mold. The experimental method is to realize the transfer of the surface micro-texture of the flat mold to the surface of the high molecular polymer material cylinder through the device. The device and the experimental method can be used to complete the study of the influence of the molding temperature, pre-imprinting amount and transfer rolling speed on the surface micro-texture formation of the high molecular polymer material cylinder during the surface micro-texture formation process. The present invention converts the rolling-rolling cylinder surface micro-texture forming method into a plate-rolling method, simplifies the mold, reduces the experimental cost, and facilitates the setting and monitoring of the parameters of the surface texture forming process.

Description

Technical Field

[0001] The invention relates to surface texture formation, in particular to a polymer column surface texture formation research device and an experimental method. Background Art

[0002] With the continuous deepening of research on microstructure forming technology, the special properties and applications of products with surface microstructures have received more and more attention. Research on the lubrication and friction of friction pairs in recent years has proved that the surface texture on the contact surface of the friction pair, that is, the lattice of pits or tiny grooves with certain morphological characteristics arranged in a specific form can effectively improve the surface tribological properties and increase the load-bearing capacity of the friction pair. Polymer materials are the main basic materials for micro-nano processing. Since polymers are different from metals in terms of material properties such as surface energy and elastic modulus, the effect of surface texture on friction and lubrication properties will also be different. Therefore, the friction characteristics of friction pairs with surface textures made of polymers need to be further studied.

[0003] Friction pairs are mostly cylindrical structures in mechanical design. In order to meet the research of friction pairs with surface textures made of polymer materials, the micro-texture formation of the surface of cylindrical friction pairs is particularly important. In order to explore the factors of micro-texture formation on the surface of cylinders, such as the influence of texture morphology, material molding temperature, pre-imprinting amount and transfer rolling speed on surface texture formation, a convenient and fast experimental device is urgently needed for the molding research of polymer cylinder surface texture under the above different molding process parameter conditions.

[0004] At present, one of the methods for forming surface microstructures is rolling forming, which is to transfer the microstructures onto the surface of the experimental material by rolling with a cylindrical mold with a surface microstructure and certain morphological parameters. However, the microstructure processing of the cylindrical mold is difficult, the processing cost is high, and it is difficult to clean. Summary of the invention

[0005] The purpose of the present invention is to provide a device and experimental method for studying the surface texture formation of polymer cylinders, which can further simplify the experimental process of surface texture formation research, reduce experimental costs, and provide a new experimental scheme for studying the surface micro-texture formation of polymer cylinders.

[0006] The technical solution of the present invention is as follows: A polymer cylinder surface texture molding research device comprises an experimental workbench, a high molecular polymer material cylinder, a cylinder fixing device, a mold fixing device, a customized cylinder heating device, a mold driving device, and an experimental table bottom plate.

[0007] The experimental workbench is fixed to the laboratory floor via anchor bolts.

[0008] The bottom plate of the experimental table is fixed on the experimental workbench by bolt connection.

[0009] The column fixing device comprises a support frame, an adjusting shaft, an adjusting screw, a fixed ejector pin and a scale; the support frame is fixed on the bottom plate of the experimental table by bolt connection, and an elongated groove is opened on two sides of the support frame; a middle threaded hole for installing the fixed ejector pin is provided between the support frame and the adjusting shaft, and the surface of the fixed ejector pin is designed with an external thread and is placed in the hole by threaded connection; one end of the fixed ejector pin is a cone, and by rotating the fixed ejector pin, the fixed ejector pin is axially moved in the above-mentioned threaded hole, so that the tip of the cone is aligned with the center of the two side surfaces of the high molecular polymer material cylinder, so that the cylinder can only rotate axially; the adjusting shaft is placed inside the support frame by a small interference fit; the adjusting screw is threadedly connected to the adjusting shaft, and the adjusting screw cannot move up and down, so by rotating the adjusting screw, the adjusting shaft can be moved up and down, thereby adjusting the axis height of the fixed ejector pin, that is, adjusting the axis height of the high molecular polymer material cylinder.

[0010] The customized column heating device has the functions of setting the experimental temperature, heating the high molecular polymer material cylinder, and detecting the temperature; its front end is a heating cover, the middle is a silicone wiring hose, and the lower part is a heating fixing plate; the heating material is placed in the heating cover, the heating material power line is placed in the silicone wiring hose, and is led out through the heating fixing plate; the heating fixing plate is connected by bolts to fix the customized column heating device on the table top of the experimental workbench.

[0011] The mold fixing device comprises a customized track, a mold mounting plate, and a flat mold; wherein the customized track is fixed to the bottom plate of the experimental table by bolt connection; the mold mounting plate is placed on the customized track so that it can reciprocate on the customized track under the action of external force; the flat mold is fixed on the mold mounting plate by bolt connection, and the flat mold is customized according to experimental processing, and micro-textures arranged according to certain rules and having certain morphology are processed on it according to experimental needs.

[0012] The mold driving device includes a customized hydraulic cylinder and a hydraulic cylinder fixing frame; wherein the customized hydraulic cylinder is placed and fixed on the hydraulic cylinder fixing frame, and has the function of accurately outputting the moving speed and displacement data of the hydraulic cylinder piston rod; the hydraulic cylinder fixing frame is fixed on the table top of the experimental workbench by bolts; the piston rod head of the customized hydraulic cylinder is connected to the mold mounting plate by bolt connection.

[0013] Based on the polymer cylinder surface texture forming research device, the experimental method is as follows: during the experiment, the high molecular polymer material cylinder is clamped by the cylinder fixing device, and the axis height of the high molecular polymer material cylinder is adjusted by the adjusting screw in the cylinder fixing device, and measured by the scale, that is, setting the distance between the axis of the high molecular polymer material cylinder and the flat mold, that is, the experimental pre-imprinting amount; setting the heating temperature of the customized cylinder heating device, covering the high molecular polymer material cylinder with the heating cover by moving the silicone wiring hose, and starting the customized heating device for heating; when the set experimental temperature is reached, the customized heating device stops heating , the polymer material cylinder is in a heat preservation state; the mold driving device connected to the laboratory hydraulic system is started, and the speed of the piston rod of the customized hydraulic cylinder is controlled by the speed regulating valve in the hydraulic system. When the piston rod pushes the mold mounting plate connected thereto at the set experimental speed, the flat mold is driven to move; since the experimental pre-imprinting amount is set, at this time, the distance from the axis of the polymer material cylinder to the surface of the flat mold is less than the radius of the polymer material cylinder; therefore, under the action of friction force, the polymer material cylinder rotates, thereby transferring the microstructure attached to the surface of the flat mold to the surface of the polymer material cylinder.

[0014] Compared with the existing technology, the characteristics of the present invention are: the experimental device can conveniently set the pre-imprinting amount, molding temperature and transfer rolling speed; the traditional roll-to-roll cylindrical surface microstructure molding method is converted into a plate-to-roll transfer method; and the mold required for the experiment is difficult to process, expensive and difficult to clean. The present invention provides a new experimental scheme for in-depth research on the surface microstructure molding of polymer cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the schematic diagram of the experimental device structure-1;

[0016] Figure 2 This is the schematic diagram of the experimental device structure-2;

[0017] Figure 3 It is a top view of the experimental device structure;

[0018] Figure 4 It is the AA section view of the experimental device structure;

[0019] Figure 5 It is the BB cross-sectional view of the experimental device structure;

[0020] Figure 6 It is a schematic diagram of the scale of the column fixing device.

[0021] Markings in the accompanying drawings: 1-experimental workbench, 2-column fixing device, 3-mold fixing device, 4-customized column heating device, 5-mold driving device, 6-polymer material cylinder, 7-laboratory table bottom plate, 21-support frame, 22-adjusting shaft, 23-adjusting screw, 24-fixed ejector pin, 25-scale, 31-customized track, 32-mold mounting plate, 33-flat mold, 41-heating hood, 42-silicone wiring hose, 43-heating fixing plate, 51-customized hydraulic cylinder, 52-hydraulic cylinder fixing frame. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, a polymer cylinder surface texture molding research device includes an experimental workbench 1, a high molecular polymer material cylinder 6, a cylinder fixing device 2, a mold fixing device 3, a customized cylinder heating device 4, a mold driving device 5, and an experimental table bottom plate 7.

[0024] like Figure 1 , Figure 2 As shown, the experimental workbench 1 is fixed to the laboratory floor by anchor bolts.

[0025] like Figure 1 As shown, the experimental table bottom plate 7 is fixed on the table top of the experimental workbench 1 by bolt connection.

[0026] like Figure 2 , Figure 4 , Figure 6 As shown, the column fixing device 2 includes a support frame 21, an adjusting shaft 22, an adjusting screw 23, a fixed ejector pin 24 and a scale 25; the support frame 21 is fixed to the bottom plate 7 of the experimental table by bolt connection, and its two sides are provided with slender grooves; an intermediate threaded hole for installing the fixed ejector pin 24 is provided between the support frame 21 and the adjusting shaft 22, and the surface of the fixed ejector pin 24 is designed with an external thread and is placed in the hole by threaded connection; one end of the fixed ejector pin 24 is a cone, and by rotating the fixed ejector pin 24, it is caused to move axially in the above-mentioned threaded hole, and then the tip of the cone is aligned with the center of the two side surfaces of the high molecular polymer material cylinder 6, so that it can only rotate axially; the adjusting shaft 22 is placed inside the support frame 21 through a small interference fit; the adjusting screw 23 is connected to the adjusting shaft 22 by threads.

[0027] Since the adjusting screw 23 cannot move up and down, the adjusting shaft 22 can be moved up and down by rotating the adjusting screw 23, thereby adjusting the axis height of the fixed ejector pin 24, that is, adjusting the axis height of the polymer material cylinder 6. Figure 6 As shown, a scale 25 is attached to the side of the support frame 21, which can measure the distance from the axis of the experimental high molecular polymer material cylinder 6 to the surface of the flat mold 33, that is, to set the pre-imprinting amount of the microstructure transfer during the experiment.

[0028] like Figure 1 , Figure 2 As shown, the customized column heating device 4 has the functions of setting the experimental temperature, heating the high molecular polymer material cylinder 6 and detecting the temperature; its front end is a heating cover 41, the middle is a silicone wiring hose 42, and the lower part is a heating fixing plate 43; the heating material is placed in the heating cover 41, the heating material power line is placed in the silicone wiring hose 42, and is led out through the heating fixing plate 43; the heating fixing plate 43 is connected by bolts to fix the customized column heating device 4 on the table top of the experimental workbench 1.

[0029] When the polymer material cylinder 6 is preheated, the silicone wiring hose 42 is manipulated to cover the polymer material cylinder 6. When the cylinder surface reaches the set temperature, the customized cylinder heating device 4 stops heating, and the polymer material cylinder 6 is kept warm.

[0030] like Figure 4 , Figure 5 As shown, the mold fixing device 3 includes a customized track 31, a mold mounting plate 32, and a flat mold 33; wherein the customized track 31 is fixed to the bottom plate 7 of the experimental table by bolts; the mold mounting plate 32 is placed on the customized track 31, and can reciprocate on the customized track 31 under the action of external force; the flat mold 33 is fixed to the mold mounting plate 32 by bolts; the flat mold 33 is customized according to experimental processing, and microstructures arranged according to certain rules and having certain morphologies are processed thereon according to the needs of the experimental content.

[0031] like Figure 1 , Figure 2 As shown, the mold driving device 5 includes a customized hydraulic cylinder 51 and a hydraulic cylinder fixing frame 52; wherein, the customized hydraulic cylinder 51 is placed and fixed on the hydraulic cylinder fixing frame 52, and has the function of accurately outputting the moving speed and displacement data of the hydraulic cylinder piston rod; the hydraulic cylinder fixing frame 52 is fixed on the table surface of the experimental workbench 1 by bolts; the piston rod head of the customized hydraulic cylinder 51 is connected to the mold mounting plate 32 by bolt connection.

[0032] During the experiment, the piston rod of the customized hydraulic cylinder 51 reciprocates to realize the reciprocating motion of the mold mounting plate 32 , that is, to realize the reciprocating motion of the flat mold 33 .

[0033] Based on the polymer cylinder surface texture forming research device, the specific implementation of the experimental method is as follows: during the experiment, the fixed ejector pin 24 in the cylinder fixture 2 is adjusted so that the high molecular polymer material cylinder 6 is clamped by the cylinder fixture 2, the axis height of the high molecular polymer material cylinder 6 is adjusted by the adjusting screw 23 in the cylinder fixture 2, and the distance between the axis of the high molecular polymer material cylinder 6 and the surface of the flat mold 33 is measured by the scale 25, that is, the set pre-imprinting amount of the experiment;

[0034] The heating temperature of the customized column heating device 4 is set, that is, the experimental temperature is set, the heating cover 41 is covered with the polymer material cylinder 6 by moving the silicone wiring hose 42, and the customized column heating device 4 is started to heat; when the set experimental temperature is reached, the customized column heating device 4 stops heating, and the polymer material cylinder 6 is in a heat preservation state;

[0035] The mold driving device 5 connected to the laboratory hydraulic system is started, and the speed of the piston rod of the customized hydraulic cylinder 51 is controlled by the speed regulating valve in the hydraulic system, that is, the transfer rolling speed during the experiment is set; the piston rod pushes the mold mounting plate 32 connected thereto at the set experimental transfer speed, thereby driving the flat mold 33 to move forward; since the experimental pre-imprinting amount is set, at this time, the distance from the axis of the polymer material cylinder 6 to the flat mold 33 is smaller than the radius of the polymer material cylinder 6; therefore, as the flat mold 33 moves forward, the polymer material cylinder 6 rotates under the action of friction, thereby transferring the microstructure attached to the surface of the flat mold 33 to the surface of the polymer material cylinder 6.

[0036] The microstructural morphology characteristics of the polymer material cylinder 6 obtained by transfer under the above-mentioned experimental process parameters are detected; based on the experimental device and according to the experimental method, different molding temperatures, pre-imprinting amounts and transfer rolling speeds are set to study the influence of process parameters on the microstructural molding of the surface of the polymer material cylinder.

[0037] Finally, it should be noted that the above description and drawings of the present invention describe the basic principles, main features and advantages of the present invention. They are only the preferred implementation of the present invention and are not a limitation on the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. And the obvious changes or modifications derived from them still fall within the scope of protection of the present invention.

Claims

1. A polymer column surface texture formation research device, characterized in that: It includes a laboratory workbench, a high molecular polymer material cylinder, a cylinder fixing device, a mold fixing device, a customized cylinder heating device, a mold driving device, and a laboratory table bottom plate; The experimental workbench is fixed to the laboratory floor by bolt connection; The bottom plate of the experimental table is fixed on the table top of the experimental workbench by bolt connection; The customized column heating device is fixed on the table top of the experimental workbench by bolt connection; The column fixing device and the mold fixing device are respectively fixed on the bottom plate of the experimental table by bolt connection; The mold driving device is fixed on the experimental workbench by bolt connection; The column fixing device comprises a support frame, an adjusting shaft, an adjusting screw, a fixed ejector pin and a scale; the support frame is fixed on the bottom plate of the laboratory table by bolt connection, and an elongated groove is provided on two sides of the support frame; a threaded hole for installing the fixed ejector pin is provided between the support frame and the adjusting shaft; the surface of the fixed ejector pin has an external thread, and the fixed ejector pin is placed in the threaded hole by threaded connection; one end of the fixed ejector pin is a cone, and the tip of the cone is used to fix the high molecular polymer material cylinder; the adjusting shaft is placed inside the support frame by a small interference fit; the adjusting screw is threadedly connected to the adjusting shaft, and the adjusting screw cannot move up and down, so the adjusting shaft can be moved up and down by rotating the adjusting screw, thereby adjusting the axis height of the fixed ejector pin, that is, adjusting the axis height of the high molecular polymer material cylinder; The mold fixing device comprises a customized track, a mold mounting plate, and a flat mold; wherein the customized track is fixed to the bottom plate of the experimental table by bolt connection; the mold mounting plate is placed on the customized track so that it can reciprocate on the customized track under the action of external force; the flat mold is fixed to the mold mounting plate by bolt connection; the flat mold is customized for processing, and according to the needs of the experimental content, its surface is processed with surface micro-textures arranged according to certain rules and having certain morphological characteristics; The scale of the column fixing device is attached to the side of the support frame, and can measure the distance from the axis of the high molecular polymer material cylinder to the surface of the flat mold.

2. A polymer column surface texture forming research device according to claim 1, characterized in that: The front end of the customized column heating device is a heating cover, the middle is a silicone wiring hose, and the lower part is a heating fixing plate; the heating material is placed in the heating cover, the power line of the heating material is placed in the silicone wiring hose, and is led out through the heating fixing plate; the heating fixing plate is connected by bolts to fix the customized column heating device on the table of the experimental workbench; The mold driving device includes a customized hydraulic cylinder and a hydraulic cylinder fixing frame; the customized hydraulic cylinder is placed and fixed on the hydraulic cylinder fixing frame; the hydraulic cylinder fixing frame is fixed to the table top of the experimental workbench by bolts; the piston rod head of the customized hydraulic cylinder is connected to the mold mounting plate by bolt connection.

3. A polymer column surface texture forming experimental method, characterized in that: A polymer cylinder surface texture molding research device as described in claim 2 is used, the high molecular polymer material cylinder is clamped by the cylinder fixing device, the axis height of the high molecular polymer material cylinder is adjusted by the adjusting screw in the cylinder fixing device, and the pre-imprinting amount of the experiment is set by measuring the scale; the heating temperature of the customized cylinder heating device is set, the heating cover is covered with the high molecular polymer material cylinder by moving the silicone wiring hose, and the customized cylinder heating device is started for heating; when the set experimental temperature is reached, the heating stops, and the high molecular polymer material cylinder is in a heat preservation state. state; starting the mold driving device connected to the laboratory hydraulic system, the speed of the piston rod of the customized hydraulic cylinder is controlled by the speed regulating valve in the hydraulic system, and the piston rod pushes the mold mounting plate connected thereto at the set experimental imprinting speed, thereby driving the flat mold to move; due to the set pre-imprinting amount, at this time, the distance from the axis center of the high molecular polymer material cylinder to the surface of the flat mold is smaller than the radius of the high molecular polymer material cylinder; under the action of friction force, the high molecular polymer material cylinder rotates, thereby transferring the micro texture attached to the surface of the flat mold to the surface of the high molecular polymer material cylinder.

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