A dustproof net folding mold and dustproof net

Abstract

This invention provides a dustproof net folding mold and a dustproof net, belonging to the field of die-cutting technology. It aims to solve the problems of cumbersome processing procedures, low efficiency, high cost, and easy misalignment in existing dustproof net processing. The mold includes product holes, fold lines, observation lines, positioning holes, and cutting lines. Mold A and mold B are rotatably connected via the fold lines to achieve integrated folding. The processing method includes material pretreatment, mold positioning, double-sided adhesive application and hole cutting, mesh fabric bonding and pressing, secondary cutting, and release paper application. The integrated mold design reduces the number of processes, and the positioning holes and observation lines ensure positioning accuracy, ultimately producing a four-layer dustproof net consisting of a first layer of double-sided adhesive, a mesh fabric, a second layer of double-sided adhesive, and release paper. This invention improves processing efficiency, reduces labor costs, and avoids folding misalignment, making it suitable for large-scale production of dustproof nets for electronic devices.

Description

Technical Field

[0001] This utility model belongs to the field of die-cutting processing technology, and relates to the processing of dustproof nets, specifically a dustproof net folding mold and a dustproof net. Background Technology

[0002] With the development of technology, electronic devices have become necessities in human life, and their demand continues to grow, driving a corresponding increase in the use of die-cut dustproof netting. However, the industry is currently facing significant challenges: on the one hand, due to the inherent structural limitations of the dustproof netting and its complex manufacturing process, manual assembly of fixtures makes it difficult to meet the ever-increasing demand; on the other hand, meeting delivery requirements necessitates a significant increase in assembly and manufacturing personnel, which directly leads to higher product manufacturing costs and unnecessary financial burdens.

[0003] Patent CN117812490A provides a method for preparing a speaker dustproof mesh, as well as the speaker dustproof mesh and speaker enclosure. The dustproof mesh structure is composed of a dustproof and waterproof material layer and a double-sided adhesive layer. A sound-emitting hole is located in the center of the double-sided adhesive layer. The dustproof and waterproof material layer is smaller than the double-sided adhesive layer and completely covers the sound-emitting hole, allowing for double-sided adhesion. This effectively solves the dustproof and waterproof problem for speakers and also facilitates easy bonding with other structural components. The processing method involves multiple steps of lamination, die-cutting, and waste removal. Advantages include an ingenious structural design that integrates dustproof, waterproof, and bonding functions; a reasonable processing method with simple waste removal, saving manpower; reliable product quality, and suitability for large-scale production. However, this solution also has some drawbacks. It requires extremely high material adhesion matching, with strict and precise control of the adhesion between the single-sided and double-sided adhesives; the processing steps are relatively cumbersome, and the die-cutting precision requirements are stringent, which increases the difficulty and complexity of production to some extent.

[0004] Patent CN101072247A discloses a dustproof net and its processing method. The dustproof net consists of a composite dustproof and waterproof material layer and a double-sided adhesive layer. The double-sided adhesive layer has a sound-emitting hole in its center. The dustproof and waterproof material layer is smaller than the double-sided adhesive layer and completely covers the sound-emitting hole, allowing for double-sided adhesion. This solves the dustproof and waterproof problem for speakers and also allows them to be bonded to other structural components. The processing method involves multiple steps of lamination, die-cutting, and waste removal. The structure is ingeniously designed with dual functions; the processing method has a reasonable combination of steps, simple waste removal, saves labor, and produces high-quality products suitable for mass production. The disadvantages are that it requires high precision in matching the adhesive properties of the materials, necessitating precise control of the adhesion between the single-sided and double-sided adhesives; the numerous processing steps and high die-cutting accuracy requirements may increase production difficulty. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a dustproof net folding mold and a dustproof net.

[0006] This invention is applicable to the folding and forming of various dustproof nets in the die-cutting industry. It can improve the accuracy and efficiency of dustproof net folding and meet the assembly requirements of dustproof net components in the electronics, communications and other fields. In the mold design, mold A and mold B are manufactured and processed on a single mold before folding, which satisfies production needs while reducing manufacturing costs.

[0007] This utility model provides the following technical solution: Technical solution 1 provides a dustproof net folding mold. The mold includes: a product hole, a folding line, an observation line, a positioning hole, and a cutting line.

[0008] The area above the fold line serves as mold A, and the area below it serves as mold B. Molds A and B are rotatably connected. The fold line serves as the fold point for the dustproof mesh, and it is symmetrically equipped with a central fitting hole, a product hole, and an outer peripheral fitting hole. The product holes are arranged in an array.

[0009] Furthermore, the diameter of the product hole is smaller than the size of the dustproof net product; for example, if the minimum side length of the dustproof net product is 5 mm, then the diameter of the product hole is < 5 mm.

[0010] Technical solution 2 provides a dustproof net manufactured by the above-described device. The dustproof net includes double-sided adhesive, a mesh fabric, and release paper; the double-sided adhesive includes a first layer of double-sided adhesive and a second layer of double-sided adhesive; the dustproof net consists of four layers, from bottom to top: a first layer of double-sided adhesive, a mesh fabric, a second layer of double-sided adhesive, and release paper.

[0011] Furthermore, the double-sided adhesive is in roll or sheet form; the material is PSA double-sided adhesive, preferably acrylic double-sided adhesive, rubber double-sided adhesive, silicone double-sided adhesive, or hot melt adhesive film; Furthermore, a process-resistant film is provided on both sides of the double-sided adhesive; Furthermore, the double-sided adhesive is placed on the folding mold by an auxiliary waste removal material, and the auxiliary waste removal material is sticky on both the top and bottom. Furthermore, a sound-permeable hole is provided in the center of the double-sided adhesive. The sound-permeable hole ensures that sound propagates smoothly, avoids attenuation or distortion caused by obstruction, and reduces acoustic interference to improve sound quality.

[0012] Furthermore, the material of the mesh is selected from nylon, polyester fiber, polytetrafluoroethylene, metal mesh or aramid fiber, depending on the actual application.

[0013] Furthermore, the release paper is provided with a handle that exceeds the size of the mesh fabric.

[0014] Furthermore, a method for folding a dustproof net is provided, which is based on the above-mentioned dustproof net folding mold and includes the following steps: S1. Material pretreatment and mold positioning and fixing: prepare double-sided adhesive, mesh cloth and release paper; install the integrated folding mold on the workbench of the die-cutting machine, and confirm the relative position of the mold and the workbench through the registration holes and observation lines to avoid inclination; S2. Laying and hole cutting of double-sided adhesive: place auxiliary waste-discharging materials on the whole folding mold, including mold A and mold B, place the double-sided adhesive with process anti-adhesive films on both sides on the whole folding mold, forming a composite structure from bottom to top: folding mold - auxiliary waste-discharging material - process anti-adhesive film - double-sided adhesive - process anti-adhesive film; cut the sound-transmitting holes in the product holes on the above composite structure through a knife mold; Further, the knife mold cuts through the composite structure of process anti-adhesive film - double-sided adhesive - process anti-adhesive film, but does not cut through the auxiliary waste-discharging material, so that the auxiliary waste-discharging material can carry away the cutting waste at the product holes in the subsequent waste discharge process; S3. Adhesion, pressing and second-sequence cutting of double-sided adhesive and mesh cloth: cut the double-sided adhesive on mold B along the cutting line, then tear off the upper process anti-adhesive film cut in step S2, cover the mesh cloth on the adhesive surface of the double-sided adhesive on mold A, at this time, the double-sided adhesive on mold A serves as the first layer of double-sided adhesive, and the double-sided adhesive on mold B serves as the second layer of double-sided adhesive; fold mold B upward along the folding line to make the corresponding product structures of mold A and mold B fit precisely, the second layer of double-sided adhesive is adhered to the upper side of the mesh cloth, check the alignment after folding through the observation lines, press to obtain a composite structure containing mesh cloth; use a second-sequence knife mold to cut the above-mentioned mesh-containing composite structure, the lower part after cutting is discharged as waste, and the upper part enters the next process; Further, the shape of the second-sequence knife mold is a polygonal line structure with continuously arranged "ji"-shaped (n-shaped) structures; S4. Release paper pasting: tear off the uppermost process anti-adhesive film and auxiliary waste-discharging material of the cut mesh-containing composite structure, expose the adhesive layer of the second layer of double-sided adhesive, and attach the release paper; use a third-sequence knife mold to cut out a complete dust-proof mesh structure, so as to obtain a single dust-proof mesh product.

[0015] Further, after cutting by the third-sequence knife mold, the peripheral waste is removed, and the product can be made into a roll material subsequently, the release paper of which can be easily peeled off by a handle for subsequent assembly with electronic equipment.

[0016] Compared with the prior art, the present utility model has at least the following improvements and beneficial effects: (1) The present utility model simplifies processing procedures and improves production efficiency. Through the integrated mold design, the original step-by-step processing links are integrated, which reduces the manufacturing and alignment operations of single procedures, significantly improves equipment utilization, accelerates production rhythm, and improves overall processing efficiency.

[0017] (2) This utility model reduces labor costs, enhances adaptability, reduces manual assembly of fixtures and repeated alignment operations, and directly reduces labor input costs; at the same time, the mold structure can be flexibly adapted to dustproof net products of different shapes, thus broadening the scope of application.

[0018] (3) This utility model ensures production stability, meets batch demand, and the optimized processing flow shortens the production cycle of a single product and increases the unit time capacity, which is conducive to large-scale industrial production.

[0019] (4) This utility model accurately positions and prevents misalignment, improving product yield. With the help of the positioning hole, observation line and integrated folding structure, it achieves accurate alignment between mold A and mold B, avoiding the deviation caused by multiple alignments in traditional step-by-step processing, and reducing the defect rate. Attached Figure Description

[0020] Figure 1 A schematic diagram of an existing mold; Figure 2 Product structure diagram; Figure 3 A schematic diagram of the improved mold according to this utility model; Figure 4 A schematic diagram of the application and cutting of double-sided tape (viewed from the side). Figure 5 This is a schematic diagram after folding (viewed from the side); Figure 6 This is the cutting outline diagram of the second-order die; Figure 7 This is a diagram showing the product after the release paper has been applied. Figure 8 The cutting contour diagrams are for the three-stage and two-stage cutting dies; Figure label: 1 Product hole, 2 Folding line, 3 Observation line, 4 Locating hole, 4-1 Center locating hole, 4-2 Outer circumferential locating hole, 5 Cutting line; 6 Double-sided adhesive, 6-1 First layer of double-sided adhesive, 6-2 Second layer of double-sided adhesive, 7 Mesh cloth, 8 Release paper; 9 Process release film, 10 Auxiliary waste removal material. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to specific embodiments. It should be noted that the following embodiments will help those skilled in the art to further understand this utility model, but do not limit this utility model in any way. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model. These all fall within the protection scope of this utility model.

[0022] Unless otherwise specified, all raw materials used in this invention are not subject to any particular restriction on their source; they may be purchased from the market or prepared using conventional methods known to those skilled in the art.

[0023] Example 1: A dustproof net folding mold The dustproof mesh structure provided in this embodiment is as follows: Figure 2 As shown; the dustproof net folding mold is an integrated die for preparing dustproof nets, and the structure of the folding mold is as follows. Figure 3 As shown.

[0024] The folding mold includes a product hole 1, a folding line 2, an observation line 3, a fitting hole 4, and a cutting line 5.

[0025] The fold line 2 serves as the fold point for the dustproof net, and it is symmetrically provided with a central fitting hole 4-1, a product hole 1, and an outer peripheral fitting hole 4-2. The area above the fold line 2 serves as mold A, and the area below it serves as mold B.

[0026] The design scheme of this embodiment is as follows: Mold A and Mold B are designed on the same die, and are directly assembled along the product fold line 2, saving personnel assembly jigs and also saving processing time in process B.

[0027] The product hole 1 is adapted to the shape, size, and position of the dustproof net, used to determine the reference contour line during die cutting, ensuring that the cut dustproof net can accurately match the installation position and size of the corresponding product, guaranteeing the effective coverage and functionality of the dustproof net. The positioning hole 4 is used for positioning and mating of the die with the processing equipment or the material to be processed. By correspondingly mating with the positioning pins on the equipment or the positioning marks on the material, it ensures the accurate position of the die during the cutting process, avoiding deviation, thereby ensuring the processing accuracy and consistency of the dustproof net, which can improve processing efficiency and product qualification rate, especially in mass production.

[0028] Example 2: Preparation of Dustproof Net This embodiment, based on the folding mold provided in Embodiment 1, prepares a dustproof net with a four-layer structure. The dustproof net has four layers, from bottom to top: a first layer of double-sided adhesive 6-1, a mesh fabric 7, a second layer of double-sided adhesive 6-2, and release paper 8. The specific steps are as follows: S1. Material pretreatment and mold positioning and fixing: Prepare roll or sheet double-sided adhesive 6 (e.g., PSA material), mesh fabric 7 (e.g., 180 mesh nylon mesh), and release paper 8; process anti-sticking film 9 is provided on both sides of the PSA double-sided adhesive. Install the integrated folding mold on the die-cutting machine worktable. Ensure the mold is level and fixed by precisely engaging with the die-cutting machine positioning pin through the mold sleeve hole 4, with the error controlled within ±0.05mm. Confirm the relative position of the mold and the worktable through the observation line 3 to avoid tilting. S2. Laying and hole cutting of double-sided adhesive As shown in Figure 4 , the auxiliary waste discharging material 10 is placed on the integral folding die, which includes a die A and a die B, and both the upper and lower surfaces of the auxiliary waste discharging material 10 have adhesiveness; Place the double-sided adhesive 6 with process anti-adhesion films 9 arranged on both sides on the integral folding die, forming a composite structure from bottom to top in sequence: folding die - auxiliary waste discharging material 10 - process anti-adhesion film 9 - double-sided adhesive 6 - process anti-adhesion film 9; At this time, the acoustic transparent hole is cut out in the above composite structure at the product hole 1 by a cutter die, the cutter die cuts through the composite structure of process anti-adhesion film 9 - double-sided adhesive 6 - process anti-adhesion film 9, but does not cut through the auxiliary waste discharging material 10, so that the auxiliary waste discharging material 10 can take away the cutting waste at the product hole 1 in the subsequent waste discharging process; S3. Adhesive bonding and pressing of double-sided adhesive and mesh cloth, and second-sequence cutting Cut the double-sided adhesive 6 on die B along the cutting lines 5, tear off the upper process anti-adhesion film 9 cut in step S2, cover the adhesive surface of the double-sided adhesive on die A with mesh cloth 7, at this time, the double-sided adhesive 6 on die A serves as the first layer of double-sided adhesive 6-1, and the double-sided adhesive 6 on die B serves as the second layer of double-sided adhesive 6-2; fold die B upward along the folding line 2, so that the product structures corresponding to die A and die B are precisely bonded, the second layer of double-sided adhesive 6-2 is bonded to the upper side of the mesh cloth 7, check the alignment after folding through the observation line 3 to ensure that the deviation between the upper and lower layers does not exceed 0.1 mm, perform pressing to obtain a composite structure containing mesh cloth 7, as shown in Figure 5 ; Use a second-sequence cutter die (as shown in Figure 6 ) to cut the above-mentioned composite structure containing mesh cloth 7, the shape of the second-sequence cutter die is a polyline structure with continuous "Ji-shaped" arrangement, after cutting, the lower part is discharged as waste, and the upper part enters the next process; S4. Release paper pasting Tear off the uppermost process anti-adhesion film 9 and the auxiliary waste discharging material 10 of the cut composite structure containing mesh cloth 7, expose the adhesive layer of the second layer of double-sided adhesive 6-2, and attach release paper 8, as shown in Figure 7 ; Use a third-sequence cutter die to cut out a complete dust-proof mesh structure, the handle on the release paper 8 overlaps with the waste part, as shown in Figure 8 ; at this time, after removing the peripheral waste, a single dust-proof net product can be obtained, the product can be torn off the lower process anti-adhesion film 9 and the auxiliary waste discharging material 10 subsequently, made into a roll, the release paper 8 can be easily peeled off through the handle, and used for subsequent assembly with electronic equipment.

[0029] Comparative Example 1 The comparative example is an existing die-cutting device, as shown in Figure 1As shown. The processing flow is a traditional step-by-step operation: First, mold A is made separately to complete the forming process and precision calibration of mold A; then mold B is made in the same way to ensure that the dimensional parameters of mold B match the design requirements; after both molds A and B are prepared, the substrate is preliminarily cut through the cutting process to obtain a blank that meets the approximate size; finally, with the help of a special assembly fixture, mold B is precisely aligned and fixed onto mold A to form a complete die-cutting device.

[0030] This processing method requires multiple start-ups and shutdowns of the equipment, and each step requires separate quality inspection. Not only are the procedures cumbersome and the production cycle long, but the cumulative errors caused by multiple alignments can also affect the die-cutting accuracy. In addition, there are many manual assembly steps, which is not conducive to improving the efficiency of mass production.

[0031] Compared to Comparative Example 1, Example 1 saves operators time in mold alignment, reduces costs by at least 50%, and significantly improves production efficiency. Example 1, by optimizing the die structure, not only shortens the assembly cycle of a single product but also reduces the defect rate caused by human error. This reduces material waste and rework costs while decreasing manpower input, achieving a dual optimization of efficiency and cost. It is more suitable for large-scale production needs than the traditional assembly mode of Comparative Example 1.

[0032] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A dustproof net folding mold, characterized in that, include: Product hole (1), fold line (2), observation line (3), fitting hole (4) and cutting line (5); the upper part of the fold line (2) is the A mold and the lower part is the B mold, and the A mold and the B mold can be rotatably connected; the fold line (2) is the fold of the dustproof net, and it is symmetrically provided with a central fitting hole (4-1), product hole (1) and outer peripheral fitting hole (4-2); the product hole (1) is arranged in an array.

2. The dustproof net folding mold according to claim 1, characterized in that, The diameter of the product hole (1) is smaller than the size of the dustproof net product.

3. A dustproof net, characterized in that, Prepared by any one of the folding molds described in claims 1-2, the dustproof net includes double-sided adhesive (6), mesh fabric (7) and release paper (8); the double-sided adhesive (6) includes a first layer of double-sided adhesive (6-1) and a second layer of double-sided adhesive (6-2); the dustproof net is divided into 4 layers, from bottom to top: the first layer of double-sided adhesive (6-1), the mesh fabric (7), the second layer of double-sided adhesive (6-2) and the release paper (8).

4. The dustproof net according to claim 3, characterized in that, The double-sided adhesive (6) is in roll or sheet form.

5. The dustproof net according to claim 3, characterized in that, The double-sided adhesive (6) is made of PSA double-sided adhesive, which is selected from acrylic double-sided adhesive, rubber double-sided adhesive, silicone double-sided adhesive or hot melt adhesive film.

6. The dustproof net according to claim 3, characterized in that, The double-sided adhesive (6) has process anti-sticking film (9) on both sides.

7. The dustproof net according to claim 3, characterized in that, The double-sided adhesive (6) is placed on the folding mold by the auxiliary waste removal material (10), and the auxiliary waste removal material (10) is sticky on both sides.

8. The dustproof net according to claim 3, characterized in that, The double-sided adhesive (6) has a sound-permeable hole in the center.

9. The dustproof net according to claim 3, characterized in that, The material of the mesh (7) is selected from nylon, polyester fiber, polytetrafluoroethylene, metal mesh or aramid fiber.

10. The dustproof net according to claim 3, characterized in that, The release paper (8) is provided with a handle that exceeds the size of the mesh (7).

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