A method for producing PVC high-gloss film

Abstract

The present invention relates to a method for making a PVC highlight film, and to the field of making PVC highlight films. In the process of making the PVC highlight film, it also specifically relates to a PVC highlight film making device, including an inverted shaped frame, and a detection table evenly arranged on the left and right is arranged between the left and right vertical sections of the inverted shaped frame. The detection table is composed of a left-right symmetrical fixing frame and a support plate symmetrically installed between the left and right fixing frames. The upper ends of the detection tables are all provided with fixing units, and the horizontal sections of the inverted shaped frame are provided with detection units. The present invention can not only perform impact resistance test on the PVC highlight film, but also perform tensile strength and bending strength test on it. One machine has multiple uses, which can not only save the time and energy consumed by replacing different detection equipment in traditional detection, improve work efficiency, but also reduce the production cost required for detection.

Description

Technical Field

[0001] The invention relates to the field of manufacturing PVC high-gloss films, and in particular to a method for manufacturing PVC high-gloss films. Background Art

[0002] PVC high-gloss film is a film based on polyvinyl chloride material, and its surface is specially treated to achieve high brightness or high gloss. It is widely used in advertising logos, decorative materials, car modification, printing and inkjet printing and other technical fields. At present, the production methods of PVC high-gloss film mainly include mixing and dispersion, extrusion calendering, cooling and shaping, surface treatment, quality inspection and cutting and packaging. Among them, quality inspection is the most important step in evaluating the performance of PVC high-gloss film.

[0003] However, there are still the following problems in the process of quality inspection of PVC high-gloss film:

[0004] 1. The impact resistance test, tensile strength test and bending strength test of PVC high-gloss film are usually carried out separately and independently. It takes a certain amount of time and effort to replace the PVC high-gloss film on different performance testing equipment for testing. The production cost is high and the work efficiency cannot be guaranteed.

[0005] 2. Generally, PVC high-gloss films are tested one by one. Not only is the testing efficiency low, but it is also difficult to ensure that the testing environment of each PVC high-gloss film is exactly the same. Since there are certain differences between different batches of PVC high-gloss films, a single test result may be somewhat accidental, making it difficult to judge whether the test result is true and reliable.

[0006] Therefore, in order to solve the problems existing in the quality inspection process of PVC highlight film, the present invention provides a method for manufacturing PVC highlight film. Summary of the invention

[0007] The present invention provides a method for manufacturing a PVC high-gloss film, which specifically comprises the following steps:

[0008] S1. Mixing and dispersion: Put the required raw materials into a high-speed mixer in a specific proportion for uniform mixing and dispersion.

[0009] S2. Extrusion and calendering: The mixed raw materials are sent to a heated extruder for plasticization to become a flowable molten state. The molten raw materials pass through the extruder and calender to obtain a PVC film of the required thickness and flatness.

[0010] S3. Cooling and shaping: Rapidly cool and shape the calendered PVC film to ensure the stability of the film size and avoid deformation of the film in subsequent operations.

[0011] S4. Surface treatment: Apply high-gloss varnish on the cooled and shaped PVC film, and then dry and solidify it to obtain a PVC high-gloss film.

[0012] S5. Quality inspection: First, the PVC high-gloss film can be fixed by a fixing unit, and then the PVC high-gloss film can be tested for impact resistance, bending strength or tensile strength through a testing unit.

[0013] S6. Cutting and packaging: Cut the PVC high-gloss film that has passed the quality inspection into specified lengths and widths, and then package it.

[0014] A method for making a PVC highlight film using the above steps S1-S6 also specifically involves a PVC highlight film making device in the process of making the PVC highlight film, including an inverted shaped frame, a detection table evenly arranged on the left and right is arranged between the left and right vertical sections of the inverted shaped frame, the detection table is composed of a left-right symmetrical fixing frame and a support plate symmetrically installed between the left and right fixing frames front and back, the upper ends of the detection tables are each provided with a fixing unit, and the horizontal section of the inverted shaped frame is provided with a detection unit; the fixing unit includes a clamping assembly symmetrically arranged on the upper end of the detection table front and back, a rectangular plate is arranged on the side away from the front and rear clamping assemblies, a movable plate symmetrically arranged on the left and right and slidably connected to the corresponding support plate is arranged on the end of the rectangular plate away from the corresponding clamping assembly, a fixed plate is arranged on the side of the movable plate away from the rectangular plate, and a movable plate symmetrically arranged on the end of the fixed plate close to the movable plate and slidably penetrates the movable plate Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0015] In one of the embodiments, the clamping assembly includes a transverse plate located between the left and right fixed frames of the testing table, a left-right symmetrical L-shaped plate is installed on the upper end of the transverse plate, a vertical through groove is opened on the transverse section of the L-shaped plate, a slide plate is installed in the vertical through groove for up and down sliding, a square plate fixedly connected to the slide plate is provided for up and down sliding between the inner sides of the transverse section and the longitudinal section of the L-shaped plate, elastic rubber pads are installed on the inner sides of the transverse section and the longitudinal section of the L-shaped plate and the upper end of the transverse plate, a push rod is installed on the lower end of the slide plate away from the L-shaped plate, a push plate is commonly installed on the lower ends of the push rods opposite to each other, the lower end of the push plate is connected to the push end of the automatic telescopic rod, the automatic telescopic rod is installed on the lower end of the transverse plate through a bracket, two connecting plates distributed up and down are installed on the transverse section of the L-shaped plate, the connecting plate located below is slidably connected to the push rod up and down, and the rectangular plate is commonly installed between the upper and lower connecting plates on the L-shaped plates on the left and right sides.

[0016] In one of the embodiments, the left and right movable plates in different fixed units are hinged to the corresponding rectangular plates through pins, and the pins are connected to the rectangular plates for up and down sliding. The lower end of the horizontal plate is equipped with left and right symmetrical fixed blocks, and circular plates are installed on the sides away from each other. The circular plates on the left and right sides are rotatably installed between the left and right vertical plates through the torsion spring shaft connected between the left and right fixed blocks. The sides of the left and right fixed frames in the same testing table that are close to each other are provided with rectangular grooves that are connected to the vertical plates for forward and backward sliding.

[0017] In one of the embodiments, the threaded rods are installed with driven pulleys after passing through the corresponding fixed plates, a support plate is installed at the right end of the rightmost fixed frame, a connecting shaft is rotatably installed on the support plate, and driving pulleys are installed at the front and rear ends of the connecting shaft, a transmission belt is connected between the driving pulley on the front side and the driven pulley on the front side in different fixed units, and a transmission belt is also connected between the driving pulley on the rear side and the driven pulley on the rear side in different fixed units, the front end of the driving pulley on the front side is connected to the output shaft of the driving motor, and the driving motor is fixedly connected to the rightmost fixed frame through a support.

[0018] In one of the embodiments, electric sliders are installed at the lower ends of the left and right vertical sections of the inverted U-shaped frame, and the electric sliders are slidably installed on the guide rails. The detection component also includes an inverted U-shaped plate. The rotating rod slides with the cam through a spline. The cam is rotatably installed between the left and right vertical sections of the inverted U-shaped plate. The left and right vertical sections of the inverted U-shaped plate are both sleeved on the outside of the rotating rod. A through groove is opened on the horizontal section of the inverted U-shaped frame, which is slidably connected to the horizontal section of the inverted U-shaped plate. A threaded column is threadedly connected between the horizontal sections of the inverted U-shaped plates in different detection assemblies, and the left end of the threaded column is rotatably connected to the horizontal section of the inverted U-shaped plate.

[0019] In one of the embodiments, the outer part of the moving rod is sleeved with a guide cylinder, and the front and rear ends of the horizontal section of the inverted U-shaped plate are equipped with a U-shaped frame which is slidably connected to the horizontal section of the inverted U-shaped frame and fixedly connected to the guide cylinder.

[0020] In one embodiment, the bottom wall of the rectangular groove is provided with a cylindrical groove located on the side of the corresponding vertical plate away from the rectangular plate, and a limit column is installed in the cylindrical groove for sliding up and down, and a telescopic spring is connected between the limit column and the bottom wall of the cylindrical groove.

[0021] In one embodiment, the moving rods are all threaded telescopic rods, and the weight block is threadedly connected to the telescopic section of the moving rod.

[0022] In summary, the present invention includes at least one of the following beneficial effects:

[0023] 1. The present invention can not only test the impact resistance of PVC high-gloss film, but also test its tensile strength and bending strength. One machine has multiple uses, which not only saves the time and energy consumed in replacing different testing equipment in traditional testing, improves work efficiency, but also reduces the production cost required for testing.

[0024] 2. The present invention performs performance tests on multiple PVC high-gloss films under the same test conditions at one time, which is not only conducive to improving the test efficiency, but also can avoid the randomness of a single test result, reduce the errors caused by different test environments, and improve the accuracy and reliability of the test results.

[0025] 3. The present invention is conducive to enriching the test results of PVC highlight films by performing performance tests on different batches of PVC highlight films under different test conditions. After multiple analogy analyses, the validity and authenticity of the test results can be improved, thereby providing a more comprehensive understanding of the performance characteristics of PVC highlight films.

[0026] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical scheme, and the beneficial effects brought about by the technical features of these technical schemes, other technical problems that can be solved by a method for making a PVC high-gloss film provided by an embodiment of the present application, other technical features included in the technical scheme, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 The present invention is a process flow chart of a method for producing a PVC high-gloss film.

[0029] Figure 2 It is a schematic diagram of the main three-dimensional structure of a PVC high-gloss film manufacturing device of the present invention.

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of the detection unit of the present invention.

[0031] Figure 4 It is a three-dimensional structural schematic diagram of the fixing unit, the driven pulley and the driving pulley of the present invention.

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing unit of the present invention.

[0033] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of area A in the middle.

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the push rod, the push plate and the torsion spring shaft of the present invention.

[0035] Figure 8 It is a schematic diagram of the three-dimensional structure of the clamping assembly of the present invention.

[0036] Reference numerals: 1, inverted U-shaped frame; 11, detection unit; 110, electric slider; 111, cam; 112, moving rod; 113, weight block; 114, slide groove; 115, rotating rod; 116, variable speed motor; 117, inverted U-shaped plate; 118, through groove; 119, threaded column; 120, guide cylinder; 121, U-shaped frame; 21, fixed frame; 22, support plate; 23, fixed unit; 231, horizontal plate; 232, L-shaped plate; 234, square plate; 235, push rod; 236 , push plate; 237, automatic telescopic rod; 238, rectangular plate; 239, movable plate; 240, fixed plate; 241, guide column; 242, adjustment plate; 243, adjustment spring; 244, threaded rod; 245, fixed block; 246, round plate; 247, torsion spring shaft; 248, vertical plate; 249, rectangular groove; 250, limit column; 251, telescopic spring; 252, driven pulley; 253, connecting shaft; 254, driving pulley; 255, transmission belt; 256, driving motor. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0038] See also Figure 1 and Figure 2 A method for making a PVC high-gloss film comprises the following steps:

[0039] S1. Mixing and dispersion: Put the required raw materials into a high-speed mixer in a specific proportion for uniform mixing and dispersion.

[0040] S2. Extrusion and calendering: The mixed raw materials are sent to a heated extruder for plasticization to become a flowable molten state. The molten raw materials pass through the extruder and calender to obtain a PVC film of the required thickness and flatness.

[0041] S3. Cooling and shaping: Rapidly cool and shape the calendered PVC film to ensure the stability of the film size and avoid deformation of the film in subsequent operations.

[0042] S4. Surface treatment: Apply high-gloss varnish on the cooled and shaped PVC film, and then dry and solidify it to obtain a PVC high-gloss film.

[0043] S5. Quality inspection: First, the PVC high-gloss film can be fixed by the fixing unit 23 , and then the PVC high-gloss film can be tested for impact resistance, bending strength or tensile strength by the testing unit 11 .

[0044] S6. Cutting and packaging: Cut the PVC high-gloss film that has passed the quality inspection into specified lengths and widths, and then package it.

[0045] See also Figure 1 and Figure 2 The method for making a PVC highlight film using the above steps S1-S6 also specifically involves a PVC highlight film making device in the process of making the PVC highlight film, including an inverted shaped frame 1, and a detection table evenly arranged on the left and right is arranged between the left and right vertical sections of the inverted shaped frame 1. The detection table is composed of a left-right symmetrical fixing frame 21 and a support plate 22 symmetrically installed between the left and right fixing frames 21. The upper ends of the detection tables are each provided with a fixing unit 23, and a detection unit 11 is provided on the horizontal section of the inverted shaped frame 1.

[0046] In the process of making PVC high-gloss film, the first step is to add PVC resin, plasticizer, stabilizer and other raw materials into an existing high-speed mixer in a certain proportion, and stir and mix the raw materials through the high-speed mixer to make them fully dispersed and evenly dispersed to form a mixture.

[0047] The second step: the mixed raw materials are sent to the existing extruder for heating and plasticization to make them into a flowable molten state, the molten raw materials are extruded into a film by the extruder, and calendered by the calendering roller of the existing calender to make it uniform in thickness and smooth in surface, so as to obtain a PVC film with the required thickness and flatness.

[0048] Step 3: The calendered PVC film is quickly cooled and shaped by the existing cooling roller to solidify it, thereby ensuring the stability of the film size and avoiding deformation of the film in subsequent operations.

[0049] Step 4: Apply high-gloss varnish on the cooled and shaped PVC film through existing coating equipment, and obtain the PVC high-gloss film after drying and curing.

[0050] See also Figure 4 , Figure 5 , Figure 7 and Figure 8 The fixing unit 23 includes a clamping assembly symmetrically arranged at the upper end of the detection platform, the clamping assembly includes a horizontal plate 231 located between the left and right fixing frames 21 of the detection platform, and a left-right symmetrical L-shaped plate 232 is installed on the upper end of the horizontal plate 231. A vertical through groove is opened on the horizontal section of the L-shaped plate 232, and a slide plate is installed in the vertical through groove for sliding up and down. A square plate 234 fixedly connected to the slide plate is arranged between the inner side of the horizontal section and the longitudinal section of the L-shaped plate 232 for sliding up and down. The inner side of the horizontal section and the longitudinal section of the L-shaped plate 232 and the upper end of the horizontal plate 231 are all installed It is equipped with an elastic rubber pad, and a push rod 235 is installed at the lower end of the skateboard away from the L-shaped plate 232. A push plate 236 is installed at the lower ends of the push rods 235 opposite to each other on the left and right. The lower end of the push plate 236 is connected to the pushing end of the automatic telescopic rod 237. The automatic telescopic rod 237 is installed at the lower end of the cross plate 231 through a bracket. Two connecting plates distributed up and down are installed on the transverse section of the L-shaped plate 232. The connecting plate located at the bottom is connected to the push rod 235 for vertical sliding connection. A rectangular plate 238 is installed between the upper and lower connecting plates on the L-shaped plates 232 on the left and right sides.

[0051] See also Figure 4 and Figure 5A movable plate 239 which is symmetrical left and right and slidably connected to the corresponding support plate 22 is provided at one end of the rectangular plate 238 away from the corresponding clamping assembly, a fixed plate 240 is provided on the side of the movable plate 239 away from the rectangular plate 238, a guide column 241 which is symmetrical left and right and slides through the movable plate 239 is installed at one end of the fixed plate 240 close to the movable plate 239, an adjustment plate 242 which is slidably connected to the support plate 22 front and back is slidably installed between the left and right guide columns 241, an adjustment spring 243 connected between the adjustment plate 242 and the movable plate 239 is sleeved on the outside of the guide column 241, a threaded rod 244 which threads through the adjustment plate 242 is rotatably installed at one end of the fixed plate 240 close to the movable plate 239, the thread directions of the threaded rods 244 on the same left and right sides are the same, and the thread directions of the threaded rods 244 opposite to each other are opposite.

[0052] See also Figure 5-Figure 8 The left and right movable plates 239 in different fixed units 23 are hinged to the corresponding rectangular plates 238 through pins, and the pins are connected to the rectangular plates 238 for up and down sliding. The lower end of the horizontal plate 231 is equipped with left-right symmetrical fixed blocks 245, and circular plates 246 are installed on the sides away from the left and right fixed blocks 245. The circular plates 246 on the left and right sides are rotatably installed between the left and right vertical plates 248 through the torsion spring shaft 247 connected between the left and right fixed blocks 245. The left and right fixed frames 21 in the same testing table are provided with rectangular grooves 249 connected to the vertical plates 248 for forward and backward sliding on the sides close to each other. The bottom wall of the rectangular groove 249 is provided with a cylindrical groove located on the side of the vertical plate 248 away from the rectangular plate 238. A limiting column 250 is installed in the cylindrical groove for up and down sliding, and a telescopic spring 251 is connected between the limiting column 250 and the bottom wall of the cylindrical groove.

[0053] See also Figure 2 and Figure 4 The threaded rods 244 are all installed with driven pulleys 252 after passing through the corresponding fixed plates 240. A support plate is installed at the right end of the rightmost fixed frame 21, and a connecting shaft 253 is rotatably installed on the support plate. Driving pulleys 254 are installed at both the front and rear ends of the connecting shaft 253. A transmission belt 255 is connected between the driving pulley 254 on the front side and the driven pulley 252 on the front side in different fixed units 23. A transmission belt 255 is also connected between the driving pulley 254 on the rear side and the driven pulley 252 on the rear side in different fixed units 23. The front end of the driving pulley 254 on the front side is connected to the output shaft of the driving motor 256, and the driving motor 256 is fixedly connected to the rightmost fixed frame 21 through a support.

[0054] Step 5: After the production of PVC highlight film is completed, multiple small pieces of PVC highlight film can be extracted and cut from several lengths of PVC highlight film for subsequent quality inspection. Then, the multiple small pieces of PVC highlight film can be placed on different inspection tables in turn and fixed by corresponding fixing units 23. In this process, the PVC highlight film can be first placed on the upper ends of the front and rear horizontal plates 231 in the same fixing unit 23. During the placement process, the clamping assembly on one side can be pushed away from the clamping assembly on the other side. At this time, the horizontal plate 231 in the clamping assembly on the moving side drives the L-shaped plate 232, the connecting plate and the rectangular plate 238 to move synchronously, the fixed block 245 and the circular plate 246 drive the vertical plate 248 to slide synchronously along the rectangular groove 249, and the rectangular plate 238 drives the moving plate 239 The adjustment spring 243 is compressed and moved synchronously along the guide column 241 until a distance is reserved between the front and rear clamping assemblies for placing the PVC highlight film. After the PVC highlight film is located between the upper ends of the front and rear transverse plates 231, the thrust applied to the moving clamping assembly is released. At this time, the movable plate 239 in the clamping assembly moves and resets along the guide column 241 under the action of the adjustment spring 243. The rectangular plate 238 drives the L-shaped plate 232, the transverse plate 231, the fixed block 245, the circular plate 246 and the vertical plate 248 to move and reset synchronously through the connecting plate. At this time, the PVC highlight film is just located at the upper end of the transverse plate 231 in the front and rear clamping assemblies, and the transverse sections and longitudinal sections of the left and right L-shaped plates 232 in the front and rear clamping assemblies just fit the corners of the PVC highlight film to achieve elastic circumferential limiting of the PVC highlight film.

[0055] Subsequently, the automatic telescopic rods 237 in different clamping components can simultaneously pull the corresponding push plates 236 to move downward, and the push plates 236 drive the left and right push rods 235 to move downward synchronously along the connecting plate located below. The connecting plate located below can support and guide the push rods 235 during the up and down movement, and the push rods 235 drive the square plates 234 to move downward synchronously along the transverse and longitudinal sections of the L-shaped plates 232 through the slide plates until the square plates 234 press the PVC highlight film tightly against the upper end of the transverse plate 231. The transverse plate 231, the L-shaped plate 232 and the square plate 234 all use elastic rubber pads to contact the PVC highlight film, which not only increases the stability of the clamping, but also helps to protect the PVC highlight film from damage by the clamping force. The PVC highlight films in different fixing units 23 are synchronously and firmly clamped under the action of the corresponding clamping components.

[0056] In the initial state, the vertical plate 248 is always in conflict with the limiting column 250. The limiting column 250 can prevent the clamping assembly from being subjected to the elastic force of the adjusting spring 243 and driving the vertical plate 248 to slide forward and backward along the rectangular groove 249, thereby achieving the limitation of the clamping assembly and avoiding the clamping assembly from sliding forward and backward and squeezing the PVC highlight film and causing damage to it, which not only fails to guarantee the stability of the PVC highlight film, but also affects the effectiveness of subsequent detection. In the subsequent process of the PVC highlight film being subjected to pressure, the vertical plate 248 can slide along the rectangular groove 249 and squeeze the limiting column 250 to compress the telescopic spring 251 and move downward along the cylindrical groove, so that the vertical plate 248 can move smoothly.

[0057] See also Figure 2 and Figure 3 The detection unit 11 includes a detection component arranged below the horizontal section of the inverted shaped frame 1 and corresponding to the fixed unit 23 one by one. The detection component includes a cam 111. A moving rod 112 is arranged below the cam 111. The moving rod 112 is a threaded telescopic rod. A weight block 113 is threadedly installed at the lower end of the telescopic section of the moving rod 112. A sliding groove 114 is provided on the outer ring surface of the cam 111, which is slidably connected to the upper end of the moving rod 112. A rotating rod 115 is arranged between the center points of the cams 111 in different detection components. The left end of the rotating rod 115 is rotatably connected to the vertical section on the left side of the inverted shaped frame 1, and the right end of the rotating rod 115 is connected to the output shaft of a variable speed motor 116 installed on the vertical section on the right side of the inverted shaped frame 1.

[0058] See also Figure 2 and Figure 3 The lower ends of the left and right vertical sections of the inverted U-shaped frame 1 are both equipped with electric sliders 110, which are slidably mounted on the guide rails. The detection assembly also includes an inverted U-shaped plate 117, and a rotating rod 115 is slidably matched with a cam 111 through a spline. The cam 111 is rotatably mounted between the left and right vertical sections of the inverted U-shaped plate 117. The left and right vertical sections of the inverted U-shaped plate 117 are both sleeved on the outside of the rotating rod 115. The horizontal section of the inverted U-shaped frame 1 is provided with a 17 is a through groove 118 that is slidably connected to the horizontal section of the inverted U-shaped plate 117, and a threaded column 119 is threadedly connected between the horizontal sections of the inverted U-shaped plate 117 in different detection components. The left end of the threaded column 119 is rotatably connected to the horizontal section of the inverted U-shaped frame 1, and the fixed section of the moving rod 112 is sleeved with a guide cylinder 120. The front and rear ends of the horizontal section of the inverted U-shaped plate 117 are installed with a U-shaped frame 121 that is slidably connected to the horizontal section of the inverted U-shaped frame 1 and fixedly connected to the guide cylinder 120.

[0059] Before testing the performance of the PVC highlight film, the electric sliders 110 on the left and right sides can be used to drive the inverted U-shaped frame 1 and the detection unit 11 to slide forward and backward along the guide rail to the specified position. Then the threaded column 119 can be rotated to make the horizontal ends of the inverted U-shaped plates 117 in different detection components move synchronously to the corresponding positions along the through grooves 118. The inverted U-shaped plates 117 can drive the corresponding cams 111 to move to the corresponding positions along the rotating rods 115. The cams 111 drive the weight blocks 113 to move to the positions above the specified positions of the PVC highlight film through the moving rods 112. At the same time, the horizontal sections of the inverted U-shaped plates 117 can also drive the guide cylinders 120 to maintain synchronous movement with the moving rods 112 through the front and rear U-shaped frames 121. The pressure points applied by the subsequent weight blocks 113 on the PVC highlight film can be changed through the cooperation of the threaded columns 119 and the electric sliders 110, so that different detection components can be efficiently and synchronously moved to the same positions above different PVC highlight films. In addition, it is necessary to record different detection points in advance to test the PVC Multi-point performance testing of the highlight film is conducive to enriching the test results of the PVC highlight film. The accuracy and authenticity of the test results can be improved through multiple analog analysis later, so as to have a more comprehensive understanding of the performance of the PVC highlight film. In addition, the telescopic end of the moving rod 112 can be rotated while the weight block 113 is stationary to adjust the distance between the weight block 113 and the PVC highlight film, that is, to adjust the impact force, tensile force and bending force of the PVC in the subsequent performance test. At the same time, the weight block 113 can be rotated to remove it while the telescopic end of the moving rod 112 is stationary, and weight blocks 113 of different weights can be selected to be threadedly installed on the lower end of the moving rod 112. Different impact forces and pressures can be applied to the upper end surface of the PVC highlight film by weight blocks 113 of different weights. In addition, different detection points can correspond to weight blocks 113 of different weights, but the weight of the weight block 113 and the corresponding points need to be recorded for subsequent analysis of the test results under different detection conditions.

[0060] After the PVC highlight film is fixed, the speed-changing motor 116 can be used to drive the rotating rod 115 to rotate at a high speed. The rotating rod 115 drives the cam 111 corresponding to the detection unit 11 to rotate synchronously. With the cooperation of the slide slot 114 and the moving rod 112, the moving rod 112 drives the weight block 113 to move downward quickly with the rotation of the cam 111 and hit the PVC highlight film below it. During this process, the guide cylinder 120 can guide the movement of the moving rod 112 to ensure that the moving rod 112 always remains in a vertical downward state. During the process of the weight block 113 hitting the PVC highlight film, the PVC highlight film is subjected to the impact force and sinks downward. Since the front and rear clamping assemblies always maintain a tight state on the PVC highlight film, the front and rear clamping assemblies are both subjected to downward pressure and move synchronously in the direction of the force. While the clamping assembly moves, the moving plate 239 is driven to move synchronously along the support plate 22 through the rectangular plate 238. The spring is adjusted 243 is stretched accordingly along the guide column 241 as the movable plate 239 moves, so that the front and rear clamping assemblies move smoothly toward each other. In addition, the left and right vertical plates 248 in the same clamping assembly slide synchronously along the corresponding rectangular grooves 249. Under the action of the torsion spring shaft 247, the fixed blocks 245 on the left and right sides drive the circular plate 246 to rotate around the rotation point between it and the vertical plate 248. At this time, the rectangular plate 238 rotates around the hinge point between it and the movable plate 239 through the pin shaft, so that the clamping assembly can smoothly rotate downward and tilt slightly according to the bending of the PVC highlight film to compensate for the bending impact force of the PVC highlight film and prevent the clamping point between the clamping assembly and the PVC highlight film from breaking during the collision, which affects the accuracy of the overall detection result. After the weight block 113 leaves the surface of the PVC highlight film, the clamping assembly can use the adjustment spring 243 and the torsion spring shaft 247 to quickly reset to the initial state horizontally.

[0061] After the weight block 113 hits the PVC highlight film a certain number of times, the moving rod 112 and the weight block 113 can be reset upward, and then observe whether the surface of the PVC highlight film after the impact is broken or fractured. At the same time, the number of impacts and the observation results need to be recorded for subsequent analysis of the impact resistance of the PVC highlight film.

[0062] After completing the impact resistance test of the PVC highlight film, the tested PVC highlight film can be removed in the opposite manner as described above. Since the PVC highlight film after the impact test has some damage, it needs to be replaced. Then, the new PVC highlight film can be fixed in the same manner as described above. The PVC highlight film can be taken from the same large piece of PVC highlight film as the PVC highlight film for the impact resistance test. Then, the variable speed motor 116 can be used to drive the rotating rod 115 to rotate slowly, and the cam 111 rotates slowly synchronously therewith. At this time, the moving rod 112 can move along the The guide cylinder 120 drives the weight block 113 to move slowly downward and applies a downward thrust to the upper surface of the PVC highlight film. At this time, the PVC highlight film slowly bends downward, and the front and rear clamping components move and rotate in the same way as described above. In this process, the number of times the PVC highlight film is pressed down can be selected according to demand. After a certain number of times of pressing down, it can be observed whether there are bending marks, cracks or fractures on the surface of the bent PVC highlight film. At the same time, the number of bending times and the observation results need to be recorded for subsequent analysis of the bending strength performance of the PVC highlight film.

[0063] In addition, the driving pulley 254 on the front side can be driven to rotate by the driving motor 256, and the driving pulley 254 on the front side drives the driven pulley 252 on the same side to rotate synchronously through the transmission belt. The driving pulley 254 on the front side drives the driving pulley 254 on the rear side to rotate synchronously through the connecting shaft 253, and the driving pulley 254 on the rear side also drives the driven pulley 252 of the through groove to rotate synchronously through the transmission belt 255. The driven pulley 252 can drive the corresponding threaded rod 244 to rotate synchronously. Since the thread directions of the threaded rods 244 on the same side are the same, the thread directions of the threaded rods 244 opposite to each other are opposite Therefore, at this time, the front and rear threaded rods 244 in the same fixed unit 23 can drive the corresponding adjustment plate 242 to move along the synchronous direction of the support plate 22. During the movement of the adjustment plate 242, the adjustment spring 243 is driven to stretch or contract accordingly along the guide column 241. The cooperation between the active pulley 254, the driven pulley 252 and the transmission belt 255 can make the threaded rods 244 in different fixed units 23 rotate synchronously, which can not only shorten the time required for adjusting the stretching length of different adjustment springs 243 and improve the adjustment efficiency, but also help to ensure that the stretching state or contraction state of the adjustment springs 243 in different fixed units 23 is the same.

[0064] If the adjustment spring 243 between the moving plate 239 and the adjustment plate 242 is stretched and lengthened, the movable distance of the clamping assembly is shortened, and accordingly, the curvature of the PVC highlight film is reduced. If the adjustment spring 243 between the moving plate 239 and the adjustment plate 242 is compressed and shortened, the movable distance of the clamping assembly is lengthened, and the curvature of the PVC highlight film is increased synchronously. The curvature range of the PVC highlight film can be selected according to demand. When the curvature range of the PVC highlight film is small, the slow pressure applied to the upper surface of the PVC highlight film will be converted into a pulling force applied to the front and rear ends of the PVC highlight film by the front and rear clamping assemblies. Observe the PV after stretching under different curvature ranges. C Whether there are traces of tensile fracture on the highlight film and the degree of elongation when it is stretched and fractured, and the bending range and observation results are recorded, the tensile strength performance of the highlight film can be analyzed. In addition, the tensile strength test of the highlight film can be carried out simultaneously with the bending strength test. The tensile and bending strength tests of the highlight film cut from the same large sheet of highlight film can be carried out in different bending ranges. The tensile and bending strength tests of the highlight film cut from different large sheets of highlight film can also be carried out in the same bending range. Multiple tests, records, analyses and comparisons can be carried out to obtain more real and accurate test results.

[0065] The present invention can not only perform impact resistance test on PVC highlight film, but also perform tensile strength and bending strength test on it. One machine has multiple uses, which can not only save the time and energy consumed by replacing different testing equipment in the traditional way, improve the testing efficiency, but also reduce the production cost required for the testing. Subsequently, different PVC highlight films can be sampled and tested in the same way. The PVC highlight films in the impact resistance test, tensile strength test and bending strength test can be taken from the same large piece of PVC highlight film, or from large pieces of PVC highlight film in different pieces. However, different PVC highlight films tested in the same batch must always be under the same testing conditions, and the PVC highlight films tested in the same batch must all be taken from the same piece of PVC highlight film. The performance test of multiple PVC highlight films at the same time is performed at one time, which not only greatly improves the testing efficiency, but also avoids the randomness of the test results, and increases the authenticity and accuracy of the performance test results of the PVC highlight films.

[0066] Step 6: Finally, the PVC high-gloss film that has passed the quality inspection can be cut into specified lengths and widths through existing cutting equipment, and then packaged.

[0067] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “middle”, “upper”, “lower”, “front”, “back”, “left”, “right”, “top” and “bottom” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0068] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a sliding 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for producing a PVC high-gloss film, characterized in that: The specific steps include: S1. Mixing and dispersing: Put the required raw materials into a high-speed mixer in a specific proportion for uniform mixing and dispersing; S2, extrusion calendering: the mixed raw materials are sent to a heated extruder for plasticization to become a flowable molten state. The molten raw materials are passed through an extruder and a calender to obtain a PVC film of the required thickness and flatness; S3, cooling and shaping: Rapidly cool and shape the calendered PVC film to ensure the stability of the film size and avoid deformation of the film in subsequent operations; S4, surface treatment: coating high gloss varnish on the cooled and shaped PVC film, and obtaining a PVC high gloss film after drying and curing; S5, quality inspection: first, the PVC high-gloss film can be fixed by the fixing unit (23), and then the PVC high-gloss film can be tested for impact resistance, bending strength or tensile strength by the detection unit (11); S6, cutting and packaging: Cut the PVC high-gloss film that has passed the quality inspection into the specified length and width, and then package it; A method for making a PVC highlight film using the above steps S1-S6 also specifically involves a PVC highlight film making device in the process of making the PVC highlight film, comprising an inverted shaped frame (1), a detection table evenly arranged on the left and right is arranged between the left and right vertical sections of the inverted shaped frame (1), the detection table is composed of a left-right symmetrical fixing frame (21) and a support plate (22) symmetrically installed between the left and right fixing frames (21), characterized in that: a fixing unit (23) is arranged on the upper end of the detection table, and a detection unit (11) is arranged on the horizontal section of the inverted shaped frame (1); The fixing unit (23) comprises a clamping assembly symmetrically arranged at the upper end of the detection platform, a rectangular plate (238) is arranged on the side away from the front and rear clamping assemblies, a movable plate (239) which is symmetrical on both sides and is slidably connected to the corresponding support plate (22) is arranged on the end of the rectangular plate (238) away from the corresponding clamping assembly, a fixing plate (240) is arranged on the side of the movable plate (239) away from the rectangular plate (238), and a guide plate (240) which is symmetrical on both sides and slides through the movable plate (239) is installed on the end of the fixing plate (240) close to the movable plate (239). The guide column (241) is provided with an adjusting plate (242) slidably connected to the supporting plate (22) in a front-rear manner, and the guide column (241) is provided with an adjusting spring (243) connected between the adjusting plate (242) and the movable plate (239) on the outside. A threaded rod (244) threadedly penetrating the adjusting plate (242) is rotatably installed at one end of the fixed plate (240) close to the movable plate (239). The threaded rods (244) on the same side of the left and right sides have the same thread direction, and the threaded rods (244) opposite to each other in the front and rear sides have opposite thread directions. The detection unit (11) comprises a detection assembly arranged below the horizontal section of the inverted shaped frame (1) and corresponding to the fixed unit (23) one by one, the detection assembly comprising a cam (111), a moving rod (112) being arranged below the cam (111), a sliding groove (114) being slidably connected to the upper end of the moving rod (112) being provided on the outer ring surface of the cam (111), a weight block (113) being arranged at the lower end of the moving rod (112), a rotating rod (115) being arranged between the centers of the cams (111) in different detection assemblies, the left end of the rotating rod (115) being rotatably connected to the vertical section on the left side of the inverted shaped frame (1), and the right end of the rotating rod (115) being connected to the output shaft of a variable speed motor (116) installed on the vertical section on the right side of the inverted shaped frame (1); The outside of the moving rod (112) is vertically sleeved with a guide cylinder (120), and the front and rear ends of the horizontal section of the inverted U-shaped plate (117) are both equipped with a U-shaped frame (121) which is slidably connected to the horizontal section of the inverted U-shaped frame (1) and fixedly connected to the guide cylinder (120).

2. The method for making a PVC high-gloss film according to claim 1, characterized in that: The clamping assembly comprises a horizontal plate (231) located between the left and right fixing frames (21) of the detection platform, a left-right symmetrical L-shaped plate (232) is installed on the upper end of the horizontal plate (231), a vertical through groove is opened on the horizontal section of the L-shaped plate (232), a sliding plate is installed in the vertical through groove for upward and downward sliding, a square plate (234) fixedly connected to the sliding plate is provided between the inner sides of the horizontal section and the longitudinal section of the L-shaped plate (232) for upward and downward sliding, an elastic rubber pad is installed on the inner sides of the horizontal section and the longitudinal section of the L-shaped plate (232) and the upper end of the horizontal plate (231), and the sliding plate is away from the L-shaped plate (2 A push rod (235) is installed at the lower end of one side of the L-shaped plate (232), and a push plate (236) is installed at the lower end of the push rods (235) opposite to each other on the left and right. The lower end of the push plate (236) is connected to the pushing end of the automatic telescopic rod (237). The automatic telescopic rod (237) is installed at the lower end of the cross plate (231) through a bracket. Two connecting plates distributed up and down are installed on the transverse section of the L-shaped plate (232). The connecting plate located at the bottom is connected to the push rod (235) in an up and down sliding manner. The rectangular plate (238) is installed between the upper and lower connecting plates on the L-shaped plates (232) on the left and right sides.

3. The method for making a PVC high-gloss film according to claim 2, characterized in that: The left and right movable plates (239) in different fixing units (23) are hinged to the corresponding rectangular plates (238) through pins, and the pins are connected to the rectangular plates (238) in an up-and-down sliding manner. The lower end of the horizontal plate (231) is provided with left-and-right symmetrical fixing blocks (245). The sides away from the left and right fixing blocks (245) are provided with circular plates (246). The circular plates (246) on the left and right sides are rotatably installed between the left and right vertical plates (248) through the torsion spring shafts (247) connected between the left and right fixing blocks (245). The sides close to the left and right fixing frames (21) in the same testing platform are provided with rectangular grooves (249) connected to the vertical plates (248) in a forward and backward sliding manner.

4. The method for making a PVC high-gloss film according to claim 1, characterized in that: The threaded rods (244) are all installed with driven pulleys (252) after passing through the corresponding fixed plates (240); a support plate is installed at the right end of the rightmost fixed frame (21); a connecting shaft (253) is rotatably installed on the support plate; driving pulleys (254) are installed at both the front and rear ends of the connecting shaft (253); a transmission belt (255) is connected between the driving pulley (254) located at the front side and the driven pulleys (252) located at the front side in different fixed units (23); a transmission belt (255) is also connected between the driving pulley (254) located at the rear side and the driven pulleys (252) located at the rear side in different fixed units (23); the front end of the driving pulley (254) located at the front side is connected to the output shaft of a driving motor (256); and the driving motor (256) is fixedly connected to the rightmost fixed frame (21) through a support.

5. The method for making a PVC high-gloss film according to claim 1, characterized in that: The lower ends of the left and right vertical sections of the inverted U-shaped frame (1) are both equipped with electric sliders (110), which are slidably mounted on the guide rails. The detection assembly also includes an inverted U-shaped plate (117), a rotating rod (115) is slidably matched with a cam (111) through a spline, and the cam (111) is rotatably mounted between the left and right vertical sections of the inverted U-shaped plate (117). The left and right vertical sections of the inverted U-shaped plate (117) are both sleeved outside the rotating rod (115). A through groove (118) is provided on the horizontal section of the inverted U-shaped frame (1) and is slidably connected to the horizontal section of the inverted U-shaped plate (117). A threaded column (119) is threadedly connected between the horizontal sections of the inverted U-shaped plates (117) in different detection assemblies, and the left end of the threaded column (119) is rotatably connected to the horizontal section of the inverted U-shaped plate.

6. The method for making a PVC high-gloss film according to claim 3, characterized in that: The bottom wall of the rectangular groove (249) is provided with a cylindrical groove located on the side of the corresponding vertical plate (248) away from the rectangular plate (238), and a limit column (250) is installed in the cylindrical groove to slide up and down, and a telescopic spring (251) is connected between the limit column (250) and the bottom wall of the cylindrical groove.

7. The method for making a PVC high-gloss film according to claim 1, characterized in that: The moving rods (112) are all threaded telescopic rods, and the weight block (113) is threadedly connected to the telescopic section of the moving rod (112).

Images