Die cutting processing method of acrylic protective film

Abstract

The invention provides a die cutting processing method of an acrylic protective film, which enables the whole protective film to be flat and good in smoothness. The second acrylic covering structures covering the surface of the first acrylic protective film are synchronously formed into two groups through a knife stacking process, and then the adhesion surfaces of the two groups of second acrylic covering structures are transferred from front to back and are stacked on the adhesion surface of the first acrylic protective film through a steering compression roller; then the first acrylic protective film passes through a second cutter from the bottom to form a hole and an outer edge contour, waste is discharged through a transfer film, then a positioning film and a second backing material belt are arranged at the bottom of the first acrylic protective film, the upper surface of a second acrylic covering structure is covered with a light film, and after the shapes of the positioning film and the light film are obtained through die cutting, the first acrylic protective film and the second acrylic protective film are subjected to die cutting; and the second backing material belt is collected to discharge waste, and then the product is taken away to be subjected to follow-up packaging treatment.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of processing of a mobile phone metal plate protective film, in particular to a die cutting processing method of an acrylic protective film. BACKGROUND

[0002] A mobile phone metal plate needs to be provided with an acrylic protective film at the bottom during assembly, and the structure of an existing acrylic protective film is shown in Figure 6 which comprises a first acrylic protective film in an overall shape and a second acrylic covering structure for notch cover assembly, the second acrylic covering structure is two groups, each group of the second acrylic covering structure comprises a cover assembly part and a pull handle part on the outside, the existing processing method is to obtain a hole corresponding to a covering area on the first acrylic protective film by straight cutting of a first die, then two groups of second die cutters are used to straight cut the second acrylic roll material to obtain a second acrylic covering structure in a corresponding shape, and then the second acrylic covering structure is sequentially attached to the upper surface of the first acrylic protective film, wherein the first die cutter is punched from top to bottom along the adhesive surface of the first acrylic protective film, which makes the cutting glue layer have a deep cutting depth, and residual glue is easily brought out after die cutting, thereby easily leaving residual glue on the surface of the notch and the first acrylic protective film; when the second die cutter straight cuts the second acrylic roll material, the bottom of the second acrylic roll material is an acrylic protective bottom film, and during the straight cutting process, the acrylic glue of the second acrylic roll material is damaged, and the acrylic protective bottom film causes the periphery of the second acrylic covering structure in the corresponding shape to have fluff when the roll material is arranged for waste, thereby affecting the flatness and smoothness of the entire product. SUMMARY

[0003] In view of the above problems, the application provides a die cutting processing method of an acrylic protective film, which makes the entire protective film flat and has good smoothness.

[0004] A die cutting processing method of an acrylic protective film, characterized in that: the second acrylic covering structure covering the surface of the first acrylic protective film is synchronously formed into two groups through a die stacking process, then the adhesive surfaces of the two groups of second acrylic covering structures are transported from front to back and stacked on the adhesive surface of the first acrylic protective film through a turning pressure roller, then the first acrylic protective film forms a hole and an outer edge contour at the bottom through a second cutter, and the film is transported for waste, then a positioning film and a second bottom material belt are arranged at the bottom of the first acrylic protective film, a light film is arranged on the upper surface of the second acrylic covering structure, the outer shape of the positioning film and the light film is die cut, the second bottom material belt is arranged for waste, and then the product is taken away for subsequent packaging treatment.

[0005] Further characterized in that: It includes ten work stations arranged in sequence, the first work station is used for tearing the self-protection film of the adhesive surface of the first acrylic protective film, the second work station is used for pasting the second acrylic cover structure molded by die cutting on the adhesive surface of the first acrylic protective film together with the first bottom supporting tape, the third work station is a laminating cutter mechanism laminated on a composite roller, the laminating cutter mechanism is a first cutter, the laminating cutter mechanism cuts the adhesive-free layer and the adhesive layer of the second acrylic protective film from top to bottom, then the adhesive-free layer is taken away by the waste tape, the fourth work station is a first feeding mechanism laminated on the composite roller, which composites the first bottom supporting tape below the adhesive surface of the second acrylic protective film and transports the two groups of materials to the third work station, the fifth work station is a second feeding mechanism laminated on the composite roller, which transports the first bottom supporting tape to the fourth work station, the sixth work station processes the shape and hole of the first acrylic protective film from bottom to top by a second cutter, and then the product is transported by a transfer film and the waste is taken away, the seventh work station is used for compositing the positioning film of the bottom and removing the first bottom supporting tape above, the eighth work station is used for compositing the second bottom supporting tape of the bottom layer and the light film of the upper layer, the ninth work station is used for cutting the shape of the positioning film and the light film by a third cutter, and the tenth work station is used for winding the first bottom supporting tape and taking away the waste, and the product is peeled off from the production line and taken away for subsequent packaging treatment. The first bottom supporting tape is a silica gel protective film, which makes the acrylic adhesive be completely cut off when the laminating cutter mechanism cuts from top to bottom, and cannot be attached to the silica gel protective film, thereby generating fluff when the silica gel protective film is separated subsequently. The laminating cutter mechanism includes two groups of cutters, which are arranged at a set interval for punching to obtain two groups of second acrylic cover structures, thereby saving the process. The rear of the seventh work station is provided with a waste guide mechanism with an angle, which reliably discharges the first bottom supporting tape.

[0006] After the application of the present application, the laminating cutter mechanism makes the original second acrylic protective film adhesive-free layer become a carrier tape, the first bottom supporting tape, the acrylic adhesive of the first acrylic protective film is completely cut off along the knife edge during the punching process, the acrylic adhesive layer is not damaged, thereby eliminating the generation of fluff, and the first acrylic is punched from the adhesive surface to the non-adhesive surface from bottom to top, the cutting depth of the adhesive surface punching is deeper, and the residual adhesive is easily taken out after punching, which makes the entire protective film flat and good in smoothness. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 The structure diagram of the acrylic protective film product produced by the present application; Figure 2 The die cutting process route diagram corresponding to the method of the present application; Figure 3 The enlarged schematic diagram of the second work station; Figure 4The die cutting schematic view of the laminating knife mechanism of the third work station; Figure 5 The die cutting schematic view of the sixth work station; Figure 6 The enlarged schematic view of the seventh work station and the eighth work station; The names corresponding to the serial numbers in the figure are as follows: Product 100; First acrylic protective film 1, hole 101, outer edge contour 102, protective film 11, second acrylic protective film 2, second acrylic cover structure 21, positioning film 3, second bottom supporting material belt 4, light film 5, first bottom supporting material belt 6, waste discharge guide mechanism 7; First cutter T1, second cutter T2, third cutter T3; First work station S1, second work station S2, third work station S3, fourth work station S4, fifth work station S5, sixth work station S6, seventh work station S7, eighth work station S8, ninth work station S9, tenth work station S10. DETAILED DESCRIPTION

[0008] A die cutting processing method of acrylic protective film, see Figures 1-6 : The second acrylic cover structure 21 covering the surface of the first acrylic protective film 1 is synchronously formed into two groups by the laminating knife process, then the adhering surfaces of the two groups of second acrylic cover structure 21 are transported from front to back, and then stacked on the adhering surface of the first acrylic protective film 1 by the deflection pressure roller, then the first acrylic protective film 1 is formed into a hole 101 and an outer edge contour 102 from the bottom by the second cutter T2, and the waste is discharged by the transport film, then the positioning film 3 and the second bottom supporting material belt 4 are arranged at the bottom of the first acrylic protective film 1, the light film 5 is covered on the upper surface of the second acrylic cover structure 21, the outer shape of the positioning film 3 and the light film 5 is die cut, then the second bottom supporting material belt 4 is discharged, and then the product 100 is taken away for subsequent packaging treatment.

[0009] In specific implementation, the ten work stations are arranged in sequence, the first work station S1 is used for tearing the self-protection film 11 of the adhesive surface of the first acrylic protection film 1, the second work station S2 is used for attaching the die-cut second acrylic cover structure 21 to the adhesive surface of the first acrylic protection film 1 together with the first bottom supporting tape 6, the third work station S3 is a laminating cutter mechanism arranged on a composite roll, the laminating cutter mechanism is a first cutter T1, the laminating cutter mechanism cuts the adhesive-free layer and the adhesive layer of the second acrylic protection film 2 from top to bottom, and then transports the film to remove the waste of the second acrylic protection film 2, the fourth work station S4 is a first feeding mechanism arranged on a composite roll, which composites the first bottom supporting tape 6 below the adhesive surface of the second acrylic protection film 2 and transports the two groups of materials to the third work station S3, the fifth work station S5 is a second feeding mechanism arranged on a composite roll, which transports the first bottom supporting tape 6 to the fourth work station S4, the sixth work station S6 processes the shape and hole 101 of the first acrylic protection film 1 from bottom to top through a second cutter T2, and then transports the film to remove the waste, the seventh work station S7 is used for compositing the positioning film 3 at the bottom and removing the first bottom supporting tape 6 above, the eighth work station S8 is used for compositing the second bottom supporting tape 4 at the bottom and the light film 5 above, the ninth work station S9 is used for cutting the shape of the positioning film 3 and the light film 5 through a third cutter T3 and removing the waste of the light film, and the tenth work station S10 is used for winding the first bottom supporting tape 6 and removing the waste of the positioning film, peeling the product 100 from the production line and taking it away for subsequent packaging treatment. The first bottom supporting tape 6 is a silica gel protection film, which enables the acrylic adhesive to be completely cut off when the laminating cutter mechanism cuts from top to bottom, so that the acrylic adhesive is not pressed onto the silica gel protection film and generates fluff when the silica gel protection film is separated subsequently; The laminating cutter mechanism includes two groups of cutters arranged at a set interval for punching to obtain two groups of second acrylic cover structures 21, which saves the process; The rear of the seventh work station S7 is provided with a waste removal guide mechanism 7 with an angle, which reliably removes the first bottom supporting tape 6.

[0010] The raw materials are as follows: the arrangement of the laminating cutter mechanism changes the original adhesive-free layer of the second acrylic protection film into a first bottom supporting tape, so that the acrylic adhesive of the first acrylic protection film is completely cut off along the cutting edge during the punching process, the acrylic adhesive layer is not damaged, thereby eliminating the generation of fluff, and the first acrylic is punched from the non-adhesive surface from bottom to top, the cutting depth of the adhesive surface punching is deeper, and residual adhesive is easily removed after punching, which makes the entire protection film flat and has good smoothness.

[0011] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0012] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A method of die cutting a protective acrylic film, the method comprising: The second acrylic cover structure covered on the surface of the first acrylic protective film is formed by the stacking knife process to form two groups synchronously, and then the adhering surfaces of the two groups of second acrylic cover structures are transported from front to back and stacked on the adhering surface of the first acrylic protective film by the turning pressure roller, and then the first acrylic protective film is formed by the second cutting knife from the bottom to form a hole and an outer edge contour, and the waste is transported by the transport film, and then the positioning film and the light film are overlaid on the upper surface of the second acrylic cover structure, and the outer shape of the positioning film and the light film is cut out, and the second supporting material belt is transported and the waste is removed, and then the product is taken away for subsequent packaging treatment. ​ 2. The die cutting method of the acrylic protective film according to claim 1, characterized by: It comprises ten workstations arranged in sequence, the first workstation is used for tearing the self-protection film of the adhering surface of the first acrylic protective film, the second workstation is used for attaching the second acrylic cover structure cut into shape and the first supporting material belt to the adhering surface of the first acrylic protective film, the third workstation is a stacking knife mechanism stacked on a composite roller, the stacking knife mechanism is a first cutting knife, the stacking knife mechanism cuts the adhesive layer and the glue layer of the second acrylic protective film from top to bottom, and then the adhesive layer is transported and the waste is removed, the fourth workstation is a first feeding mechanism stacked on a composite roller, which composites the first supporting material belt below the adhering surface of the second acrylic protective film, and transports the two groups of materials to the third workstation, the fifth workstation is a second feeding mechanism stacked on a composite roller, which transports the first supporting material belt to the fourth workstation, the sixth workstation processes the shape and hole of the first acrylic protective film from bottom to top by the second cutting knife, and then the waste is removed by the transport film, the seventh workstation is used for compositing the positioning film at the bottom and removing the first supporting material belt above, the eighth workstation is used for compositing the second supporting material belt at the bottom and the light film above; The ninth workstation is used for cutting the shape of the positioning film and the light film by the third cutting knife, and the tenth workstation is used for winding the first supporting material belt and removing the waste, and the product is peeled off from the production line and taken away for subsequent packaging treatment.

3. The method of claim 2, wherein the method is characterized by: The first supporting material belt is a silica gel protective film, which makes the acrylic glue cut off completely when the stacking knife mechanism cuts from top to bottom, and does not adhere to the silica gel protective film, thereby generating a hair when the silica gel protective film is separated subsequently.

4. The method of claim 2, wherein the method is characterized by: The stacking knife mechanism comprises two groups of cutting knives, which are arranged at a set interval for cutting to obtain two groups of second acrylic cover structures.

5. The method of claim 2, wherein the method is characterized by: The rear of the seventh workstation is provided with a waste removal guide mechanism with an angle.

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