Method and equipment for preventing crushing and scratching of foreign matters on working table
By employing a gradient groove structure made of double-layer fluoropolymer material and a laser etching fixture system on the worktable, the problem of pressure marks and scratches caused by foreign matter residue during the processing of glass, plastic and other products is solved, achieving efficient protection and high-precision processing.
Patent Information
- Application Number
- CN202511204986.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2025-11-21
AI Technical Summary
In existing technologies, glass, plastic and other products are often damaged or scratched on worktables due to factors such as foreign matter residue, uneven material, and processing debris, which affects product yield, production costs and optical performance.
The system employs a gradient groove structure made of double-layer fluoropolymer material and a laser etching fixture system. By using grooving fixtures and hole-opening fixtures, clearance grooves and suction holes are formed on the worktable. Combined with a vacuum adsorption system, it achieves zero contact with foreign objects and self-chip removal.
It effectively prevents foreign object pressure and scratches, improves processing quality, reduces the scratch rate by nearly 100%, extends the life of the protective layer, improves processing accuracy and efficiency, and reduces operation difficulty and cost.
Smart Images
Figure CN120985590A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of product processing auxiliary technology, and in particular to a method and device for preventing foreign objects from pressing and scratching worktables. It is used to prevent glass, plastic, acrylic and other products from being pressed or scratched by foreign objects during the processing of worktables. It is suitable for high-precision machining, product assembly and other scenarios. Background Technology
[0002] Existing technologies for processing glass, plastics, and other products on workbenches often result in scratches and pressure marks due to foreign matter residue, uneven materials, and processing debris. In current technologies, this surface damage not only reduces yield and increases production costs but also severely impacts the product's optical performance, appearance quality, and mechanical properties. By developing innovative protective methods and equipment, we can achieve highly efficient protection of workbenches, improve product processing quality and production efficiency, and fill a technological gap in the industry. Summary of the Invention
[0003] In order to overcome the shortcomings of the prior art, this application proposes to provide a method and equipment for preventing foreign objects from pressing and scratching the work surface. The method and equipment adopt a double-layer fluoropolymer material gradient groove structure plus a laser etching fixture system to achieve zero contact with foreign objects and self-discharge of chips.
[0004] This application first discloses a method for preventing foreign objects from pressing or scratching a work surface, including the following steps: S1. Clean the work surface; S2. Apply the first protective layer to the cleaned countertop; S3. Using a grooving fixture for positioning, cut an avoidance groove on the first protective layer; S4. Attach the second protective layer to the area of the first protective layer, controlling its stretch rate to 3%-5% to form a gradient inclined groove; S5. Using a perforation fixture for positioning, create an air intake hole in the grooved first protective layer area.
[0005] This application also discloses an apparatus for implementing the above method, including: a double-layer protective assembly, which consists of a first protective layer and a second protective layer; A groove structure is formed between the first protective layer and the second protective layer; and, An array of suction holes penetrates the first and second protective layers and is connected to the vacuum adsorption system on the workbench.
[0006] Furthermore, the materials of the first protective layer and the second protective layer are fluoropolymer materials.
[0007] Furthermore, the depth of the groove structure is 0.5-1.2 mm.
[0008] Furthermore, the two ends of the groove structure are connected to detachable dust collection boxes for collecting foreign objects that slide down the inclined surface.
[0009] Furthermore, the device includes: The slotting positioning fixture has laser-etched clearance groove patterns on its surface; The opening positioning fixture is equipped with hollowed-out holes corresponding to the air intake holes and edge positioning buckles.
[0010] Furthermore, the edges of the grooving positioning fixture and the hole-opening positioning fixture are provided with interlocking magnetic strips to achieve precise docking.
[0011] Furthermore, the bottom surface of the opening positioning fixture is attached with an anti-slip silicone pad, the thickness of which is 0.2-0.8mm.
[0012] Furthermore, the device includes an L-shaped tiling positioning fixture, with millimeter-level scale lines and magnetic fixing strips on its two right-angled sides.
[0013] Furthermore, the L-shaped paving and positioning fixture is coated with a Teflon coating with a thickness of 10-20 μm.
[0014] Compared with the prior art, this application has at least the following beneficial effects: 1. Existing technologies tend to leave chemical residues when cleaning work surfaces, and the wiping cloths used cannot remove microscopic debris (<0.1mm). This application uses a neutral detergent and a microfiber wiping cloth to avoid the residue of chemical substances and microscopic debris. 2. Existing technology uses a single-layer rubber pad to passively block foreign objects. With long-term use, the single-layer rubber pad is prone to aging and cracking. This application uses a double-layer fluoropolymer material to make a protective layer to isolate the table surface from contact, and the groove structure guides foreign objects to the dust collection box, which reduces the scratch rate of the product by nearly 100%. The fluoropolymer material is preferably Teflon material, which is resistant to high temperature of 250℃ and has good chemical inertness, so that the service life of the product is greater than 6 months, far exceeding the service life of the single-layer rubber pad in the existing technology. 3. The fluoropolymer in this application is preferably a Teflon protective layer that is tightly bonded to the countertop. Due to its unique non-stick properties, it does not easily attract dust or other impurities after bonding, and can maintain a good protective effect even after long-term use. 4. The surface of the grooving fixture in this application is sanded to increase friction with the protective layer and prevent fixture displacement during operation. For products of different specifications, epoxy board fixtures with corresponding shapes can be quickly replaced without complex equipment adjustments, significantly improving grooving efficiency; 5. The second protective layer also uses a fluoropolymer, preferably Teflon. Utilizing its high flexibility and ductility, the stretching rate of the protective layer is precisely controlled during installation (maintained at 3%-5%), naturally forming a groove structure between the two layers. The bottom of the groove is designed as a gradient slope. Due to the smooth surface of Teflon, when foreign objects enter the groove, they will slide smoothly down the slope to the collection areas at both ends of the groove under the friction or gravity generated by product movement. The collection area is equipped with a removable dust collection box for easy periodic cleaning of foreign objects, preventing accumulation and overflow. 6. The opening fixture of this application has positioning buckles on its edge, which can precisely align with the edge of the grooving fixture to ensure that the opening position corresponds to the groove position. In addition, an anti-slip silicone pad is attached to the back of the fixture to ensure that the fixture is stable and does not wobble during the opening process, further improving the accuracy and efficiency of the opening. 7. Existing technologies have low processing precision, and grooving and hole making rely on manual measurement with an error of >1mm, which leads to misalignment of the air intake hole. This application uses a variety of positioning fixtures in combination, among which the grooving positioning fixture can achieve a processing precision of ±0.1mm, which is far higher than the manual measurement of existing technologies. Furthermore, the combined use of multiple positioning fixtures also greatly improves the precision of manual operation. 8. This application uses epoxy board instead of metal template, which reduces the manufacturing cost of the fixture by 90%. Epoxy board fixtures are inexpensive, easy to manufacture, and easy to store and replace, effectively reducing the difficulty of operation, improving the work efficiency of employees, and making the implementation of the entire protection method more convenient and efficient. Attached Figure Description
[0015] Figure 1 : A schematic diagram of the overall structure of the equipment in this application; Figure 2 This is a schematic diagram showing the application after the first protective layer has been affixed. Figure 3 This is a schematic diagram showing the application after the second protective layer has been affixed. In the diagram: 1. Countertop; 2. First protective layer; 3. Second protective layer. Detailed Implementation To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.
[0016] A method for preventing foreign objects from crushing or scratching work surfaces includes the following steps: S1. Clean work surface 1 using a neutral, environmentally friendly cleaning agent. This agent has strong penetrating and low-residue properties, quickly dissolving stubborn impurities such as oil and adhesive stains on work surface 1, while being non-corrosive to the material of work surface 1. Wipe with a microfiber lint-free cloth. The microfiber lint-free cloth has a fiber diameter only 1 / 20th that of ordinary fibers, allowing it to penetrate deep into the micropores of the work surface and effectively absorb dust, debris, and other tiny particles. S2. Apply the first protective layer 2 to the cleaned countertop 1. The first protective layer 2 is made of a fluoropolymer, preferably Teflon (polytetrafluoroethylene). Teflon has an extremely low coefficient of friction (0.05 - 0.1), is heat-resistant (stable in a temperature range of -269℃ to 250℃), and has strong chemical stability, reacting almost no with any chemical substances. During application, ensure a tight bond between the first protective layer 2 and the countertop 1. Due to its unique non-stick properties, it does not easily attract dust or other impurities after application, maintaining good protective performance even after long-term use. S3. Using a grooving fixture for positioning, cut clearance grooves into the first protective layer 2: A grooving fixture for epoxy board is fabricated. Epoxy board is selected, and a 1:1 grooving pattern is created on the epoxy board according to common product dimensions and vacuum position requirements. The pattern is laser-etched with an accuracy of ±0.1mm, and the groove width and position are clearly marked. In use, simply lay the epoxy board fixture flat on the protective layer of the workbench, using the edge of the fixture as a cutting guide, and use a handheld cutting tool to perform the grooving operation along the pattern. The fixture surface is frosted to increase friction with the protective layer and prevent fixture displacement during operation. For different product specifications, epoxy board fixtures with corresponding patterns can be quickly replaced without complex equipment adjustments, significantly improving grooving efficiency. S4. Adhere the second protective layer 3 to the area of the first protective layer 2, controlling its stretch rate to 3%-5% to form a gradient inclined groove: The second protective layer 3 also uses a fluoropolymer, preferably Teflon. Utilizing its high flexibility and extensibility, during installation, by precisely controlling the stretch rate of the second protective layer 3 (maintaining it at 3%-5%), a groove structure naturally forms between the two protective layers. The bottom of the groove is designed as a gradient inclined surface. Due to the smooth surface of Teflon, when foreign objects enter the groove, under the friction or gravity generated by product movement, the foreign objects will more smoothly slide down the inclined surface to the collection areas at both ends of the groove. The collection area is equipped with a removable dust collection box for easy periodic cleaning of foreign objects, preventing accumulation and overflow. The two protective layers are tightly bonded together, as are the protective layers and the countertop, without delamination. Simultaneously, the excellent wear resistance of Teflon ensures the integrity of the protective layer during long-term use. S5. Using a perforation fixture for positioning, create suction holes in the grooved first protective layer 2 area: A matching epoxy board perforation fixture is designed, also using epoxy board to create a 1:1 perforation pattern template. The position and size of the suction holes on the template are precisely designed according to the product's adsorption requirements, and the holes are perforated. The perforation fixture is placed over the grooved protective layer area, and a hole punch is used to directly drill the holes, eliminating the need for tedious measurement and positioning. Positioning clips are provided on the edge of the fixture, allowing for precise alignment with the edge of the grooved fixture, ensuring the perforation position corresponds to the groove. Furthermore, an anti-slip silicone pad is attached to the back of the fixture to ensure stability and prevent wobbling during the perforation process, further improving the accuracy and efficiency of the perforation. In addition to the grooving and drilling fixtures, a positioning auxiliary fixture was designed to facilitate the application of the protective layer. The fixture has an L-shaped structure, with graduated lines and magnetic strips on its two right-angled sides. When applying the protective layer, the right-angled sides of the fixture are aligned with the edge of the workbench, the position is fixed by the magnetic strips, and the starting position for applying the protective layer is quickly determined according to the graduated lines. Simultaneously, the surface of the fixture is coated with Teflon to prevent the protective layer from sticking to the fixture, facilitating quick removal of the fixture after operation. These epoxy board fixtures are inexpensive, easy to manufacture, and easy to store and replace, effectively reducing operational difficulty, improving employee efficiency, and making the implementation of the entire protective method more convenient and efficient.
[0017] The equipment for implementing the above method includes: a double-layer protective assembly, which is composed of a first protective layer and a second protective layer, wherein the materials of the first protective layer and the second protective layer are fluoropolymer materials; A groove structure, formed between the first and second protective layers, has a depth of 0.5-1.2 mm. Both ends of the groove structure are connected to detachable dust collection boxes for collecting foreign objects that slide down the inclined surface. An array of suction holes penetrates the first and second protective layers and is connected to the vacuum adsorption system on the workbench.
[0018] The equipment also includes: a slotting positioning fixture with laser-etched clearance grooves on its surface; and a hole-opening positioning fixture with hollowed-out holes corresponding to the air intake and edge positioning buckles. The edges of the slotting and hole-opening positioning fixtures are equipped with interlocking magnetic strips for precise alignment. The bottom surface of the hole-opening positioning fixture is adhered with an anti-slip silicone pad with a thickness of 0.2-0.8 mm. The equipment also includes an L-shaped laying positioning fixture with millimeter-level graduations and magnetic fixing strips on its two right-angled sides. The surface of the L-shaped laying positioning fixture is coated with a Teflon coating with a thickness of 10-20 μm.
Claims
1. A method for preventing foreign objects from pressing or scratching a workbench surface, characterized in that, Includes the following steps: S1. Clean the work surface; S2. Apply the first protective layer to the cleaned countertop; S3. Using a grooving fixture for positioning, cut an avoidance groove on the first protective layer; S4. Adhere the second protective layer to the area of the first protective layer, and control the tensile rate of the second protective layer to be 3%-5%, so that a gradient inclined groove is formed between the two protective layers. S5. Using a perforation fixture for positioning, create an air intake hole in the grooved first protective layer area.
2. An apparatus for implementing the method of claim 1, characterized in that, include: The dual-layer protective assembly consists of a first protective layer and a second protective layer. A groove structure is formed between the first protective layer and the second protective layer; and, An array of suction holes penetrates the first and second protective layers and is connected to the vacuum adsorption system on the workbench.
3. The device according to claim 2, characterized in that: The first and second protective layers are made of fluoropolymer materials.
4. The device according to claim 2, characterized in that: The depth of the groove structure is 0.5-1.2 mm.
5. The device according to claim 2, characterized in that: The groove structure has detachable dust collection boxes at both ends for collecting foreign objects that slide down the inclined surface.
6. The device according to claim 2, characterized in that, Also includes: The slotting positioning fixture has laser-etched clearance groove patterns on its surface; The opening positioning fixture is equipped with hollowed-out holes corresponding to the air intake holes and edge positioning buckles.
7. The device according to claim 6, characterized in that: The edges of the trenching positioning fixture and the hole-opening positioning fixture are provided with interlocking magnetic strips.
8. The device according to claim 6, characterized in that: The bottom surface of the opening positioning fixture is covered with an anti-slip silicone pad with a thickness of 0.2-0.8mm.
9. The device according to claim 2, characterized in that, Also includes: The L-shaped tiling positioning fixture has millimeter-level scale lines and magnetic fixing strips on its two right-angled sides.
10. The device according to claim 9, characterized in that: The L-shaped paving and positioning fixture is coated with a Teflon coating with a thickness of 10-20 μm.