A flexible and deformable portable film puncture device and its use method

Abstract

This invention relates to the field of adhesive bonding and repair technology for aerospace composite material components, and discloses a flexible, deformable, portable adhesive film puncture device and its usage method. The device includes a flexible rubber pad and a puncture mechanism, wherein the puncture mechanism comprises a flexible rubber substrate and several puncture needles, one end of each needle being connected to one end face of the flexible rubber substrate. This puncture device enables rapid puncture of adhesive films for repair in both indoor and outdoor areas. Combined with repair equipment, it facilitates the positioning, installation, and drainage of adhesive films from various types of pores in different repair structures, significantly improving the efficiency and quality of manual operations. The device is simple to operate, lightweight, low-cost, and possesses strong overall manufacturability and economic efficiency.

Description

Technical Field

[0001] This invention relates to a film puncture device, specifically a flexible and deformable portable film puncture device and its usage method, belonging to the field of adhesive bonding and repair technology for aerospace composite material components. Background Technology

[0002] Composite materials commonly suffer from fatigue and impact damage during service, leading to structural damage. To achieve economical repair, adhesive bonding can be used. The key to adhesive bonding is forming a high-quality adhesive interface. Ultrasonic non-destructive testing of the repaired structure after bonding revealed that small-scale debonding, ranging from 3mm to 5mm, easily occurred in the adhesive bonding area. Process analysis suggests this is related to the ineffective removal of minute defects such as air trapped in the adhesive layer during manufacturing, air trapped during the repair process, and structural air on the repair structure surface during curing, resulting in debonding defects in the repaired structure.

[0003] Traditional repair methods rely on visual inspection and single-needle puncture to expel air, resulting in low efficiency and unsatisfactory results. Currently, the published patent "A Film Puncture Device" (application number: 202410140099.9, publication number: CN117962025A) uses a fixed roller and a cylinder to puncture the film, allowing puncture on regular planar films. While suitable for mass production scenarios, this device is bulky and inconvenient to carry, failing to meet the needs of portable field repairs. Therefore, the purpose of this invention is to provide a flexible, deformable, portable film puncture device and its method of use. Summary of the Invention

[0004] The purpose of this invention is to provide a flexible and deformable portable adhesive film puncture device and its usage method, which solves the problems of low air expulsion quality and easy debonding defects in the adhesive film bonding process in indoor and outdoor repair scenarios.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A flexible and deformable portable membrane puncture device includes a flexible rubber pad and a puncture mechanism. The puncture mechanism includes a flexible rubber substrate and a plurality of puncture needles, one end of each of the plurality of puncture needles being connected to one end face of the flexible rubber substrate.

[0007] Optionally, the flexible rubber pad has a thickness of 2.0 mm, a diameter of φ300 mm, and a variety of size marking lines are drawn on one end of its surface.

[0008] Optionally, the thickness of the flexible rubber matrix is ​​3mm to 5mm, and the diameter is φ300mm.

[0009] Optionally, the puncture needle is conical with an end cross-sectional dimension of 1.5mm to 2.0mm, and one end of the puncture needle is solidified and encapsulated in a flexible rubber matrix.

[0010] Optionally, the distance between two adjacent puncture needles is 3.0mm to 5.0mm, and the distance between the puncture end of the puncture needle and the end face of the flexible rubber substrate is 0.5mm to 1.0mm.

[0011] A method of using a flexible, deformable, portable adhesive film puncture device, the method of use being based on the puncture device, and the method of use further comprising the following steps:

[0012] Step 1: Select the appropriate size of adhesive film based on the bonding area;

[0013] Step 2: Clean the flexible rubber pad and puncture mechanism;

[0014] Step 3: Divide the repair area on the repair component, place the flexible rubber pad in the repair area, and lay a layer of easy-tear cloth film on the upper surface of the flexible rubber pad;

[0015] Step 4: Place the adhesive film to be used onto the upper surface of the flexible rubber pad, align the puncture mechanism with the flexible rubber pad, and place the puncture needle with the puncture end facing the adhesive film.

[0016] Step 5: Install a vacuum sealing device around the repair area, connect a vacuum pump, evacuate the repair area to negative pressure, and maintain it for 5.0 min to 10.0 min;

[0017] Step Six: Disassemble the vacuum sealing device and remove the adhesive film, puncture mechanism, and flexible rubber pad;

[0018] Step 7: Remove the easy-tear cloth film and release paper from the surface of the adhesive film, place the adhesive film inside the repair area, reseal and install the vacuum sealing device, maintain the maximum negative pressure to compact and continuously vent for more than 15.0 minutes;

[0019] Step 8: Disassemble the sealing vacuum device to allow the adhesive film in the repair area to drain out of the pores.

[0020] Optionally, the vacuum sealing device includes a sealing strip, a breathable felt, a vacuum bag film, and a vacuum nozzle. During installation, the breathable felt is first laid on top of the flexible rubber substrate, the sealing strip is bonded to the repair component around the outer ring of the breathable felt, the bottom of the vacuum bag film is bonded to the breathable felt through the sealing strip, and the vacuum nozzle is installed on the vacuum bag film.

[0021] The beneficial effects of this invention are:

[0022] This puncture device enables rapid puncture of repair films in both indoor and outdoor areas. When used with repair equipment, it facilitates the positioning, installation, and drainage of films in various repair structures and pores, greatly improving the efficiency and quality of manual operations. The device is simple to operate, lightweight, and low in cost, with strong overall processability and economy. Attached Figure Description

[0023] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the puncture device of the present invention.

[0025] Figure 2 This is a schematic diagram of the puncture mechanism of the present invention.

[0026] Figure 3 This is a schematic diagram of the puncture device and repair area layout of the present invention.

[0027] Figure 4 This is a schematic diagram of the installation structure of the puncture device of the present invention when puncturing the adhesive film.

[0028] In the diagram: 1. Flexible rubber pad; 20. Flexible rubber substrate; 21. Puncture needle; 3. Adhesive film; 4. Repair area; 5. Repair component; 6. Easy-tear fabric film; 7. Breathable felt; 8. Vacuum bag film; 9. Vacuum nozzle; 10. Sealing strip. Detailed Implementation

[0029] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] See Figure 1-4 As shown, a flexible and deformable portable membrane puncture device includes a flexible rubber pad 1 and a puncture mechanism. The puncture mechanism includes a flexible rubber substrate 20 and a plurality of puncture needles 21, one end of each of the plurality of puncture needles 21 being connected to one end face of the flexible rubber substrate 20.

[0031] Specifically, the flexible rubber pad 1 has a thickness of 2.0 mm, a diameter of φ300 mm, and various size marking lines are drawn on one end of its surface. These size marking lines facilitate installation confirmation with the repair area 4 during actual use.

[0032] Specifically, the flexible rubber substrate 20 has a thickness of 3mm to 5mm and a diameter of φ300mm. The diameter of the flexible rubber substrate 20 is the same as that of the flexible rubber pad 1, which facilitates their mutual fit during use and avoids uneven stress on the adhesive film 3 sandwiched between them. Furthermore, both the flexible rubber substrate 20 and the flexible rubber pad 1 are deformable, allowing them to adapt to the shape of the repair area 4 during use.

[0033] Specifically, the puncture needle 21 is conical with an end cross-sectional dimension of 1.5mm to 2.0mm, and one end of the puncture needle 21 is solidified and encapsulated in a flexible rubber substrate 20.

[0034] A number of puncture needles 21 are densely arranged on a flexible rubber substrate 20, with a spacing of 3.0 mm to 5.0 mm between two adjacent puncture needles 21, and a distance of 0.5 mm to 1.0 mm between the puncture end of the puncture needle 21 and the end face of the flexible rubber substrate 20.

[0035] The puncture needle 21 is fixed in the flexible rubber substrate 20 by casting, and the protruding 0.5mm to 1.0mm part is a sharp metal with puncture function.

[0036] A method of using a flexible, deformable, portable adhesive film puncture device, the method of use being based on the puncture device, and the method of use further comprising the following steps:

[0037] Step 1: Select the appropriate size of adhesive film 3 according to the bonding area, usually with a diameter of less than 300mm;

[0038] Step 2: Clean the flexible rubber pad 1 and the puncture mechanism to remove surface dust and oil stains, and wrap them with a clean film for protection. Remove the film before subsequent use.

[0039] Step 3: Mark a boundary line of φ300.0mm on the surface of the area to be repaired on the repair component 5. The area inside the boundary line is the repair area 4, so that the repair area 4 is divided on the repair component 5. Place the flexible rubber pad 1 in the repair area 4, and lay a layer of easy-tear cloth film 6 on the upper surface of the flexible rubber pad 1. The easy-tear cloth film 6 makes it easy for the subsequent adhesive film 3 to be easily separated from the flexible rubber pad 1 without affecting the recycling of the flexible rubber pad 1.

[0040] Step 4: Place the adhesive film 3 to be used on the upper surface of the flexible rubber pad 1, align the puncture mechanism with the flexible rubber pad 1, and place the puncture end of the puncture needle 21 facing the adhesive film 3; when the adhesive film 3 is laid on the upper surface of the flexible rubber pad 1 and is punctured by the puncture needle 21 above, the puncture needle 21 will penetrate into the interior of the flexible rubber pad 1 without causing damage to the repair area 4.

[0041] Step 5: Install a vacuum sealing device around repair area 4, connect a vacuum pump, evacuate repair area 4 to negative pressure, and maintain it for 5.0 min to 10.0 min;

[0042] Step 6: Disassemble the vacuum sealing device and remove the shaped and fully punctured and degassed film 3, puncture mechanism and flexible rubber pad 1;

[0043] Step 7: Remove the easy-tear cloth film 6 and release paper from the surface of the adhesive film 3, place the adhesive film 3 inside the clean repair area 4, reseal and install the vacuum sealing device, maintain the maximum negative pressure to compact and continuously vent for more than 15.0 minutes;

[0044] Step 8: Disassemble the sealing vacuum device to allow the adhesive film 3 in the repair area 4 to be discharged through the pores.

[0045] Specifically, the vacuum sealing device includes a sealing strip 10, a breathable felt 7, a vacuum bag film 8, and a vacuum nozzle 9. During installation, the breathable felt 7 is first laid on top of the flexible rubber substrate 20. The sealing strip 10 is bonded to the repair component 5 around the outer ring of the breathable felt 7. The bottom of the vacuum bag film 8 is bonded to the breathable felt 7 via the sealing strip 10. The vacuum nozzle 9 is installed on the vacuum bag film 8 for connecting to an external vacuum pump.

[0046] During use, the vacuum sealing device should be used with a dedicated vacuum source. The vacuum source is connected to the vacuum nozzle 9 via a vacuum connector. In indoor conditions, a vacuum tank can be used. In outdoor conditions, only the flexible rubber pad 1, the puncture mechanism, and the vacuum sealing device, along with the vacuum pump provided with the composite material heat repair instrument, can achieve good results. The device is highly detachable and portable, and has good adaptability to vacuum sources.

[0047] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method of using a flexible, deformable, portable adhesive membrane puncture device, characterized in that, This usage method includes the following steps: Step 1: Select the appropriate size of adhesive film based on the bonding area; Step 2: Clean the flexible rubber pad and puncture mechanism of the puncture device; Step 3: Divide the repair area on the repair component, place the flexible rubber pad in the repair area, and lay a layer of easy-tear cloth film on the upper surface of the flexible rubber pad; Step 4: Place the adhesive film to be used onto the upper surface of the flexible rubber pad, align the puncture mechanism with the flexible rubber pad, and place the puncture needle with the puncture end facing the adhesive film. Step 5: Install a vacuum sealing device around the repair area, connect a vacuum pump, evacuate the repair area to negative pressure, and maintain it for 5.0 min to 10.0 min; Step Six: Disassemble the vacuum sealing device and remove the adhesive film, puncture mechanism, and flexible rubber pad; Step 7: Remove the easy-tear cloth film and release paper from the surface of the adhesive film, place the adhesive film inside the repair area, reseal and install the vacuum sealing device, maintain negative pressure by evacuation and continue to vent for more than 15.0 minutes; Step 8: Disassemble the sealing vacuum device to allow the adhesive film in the repair area to drain through the pores; The puncture mechanism includes a flexible rubber substrate and a plurality of puncture needles, one end of each of the plurality of puncture needles being connected to one end face of the flexible rubber substrate. The flexible rubber pad has a thickness of 2.0 mm, a diameter of φ300 mm, and various size marking lines are drawn on one end of its surface.

2. The method of using the flexible and deformable portable adhesive film puncture device according to claim 1, characterized in that, The thickness of the flexible rubber matrix is ​​3mm~5mm, and the diameter is φ300mm.

3. The method of using the flexible and deformable portable adhesive film puncture device according to claim 1, characterized in that, The puncture needle is conical with a cross-sectional dimension of 1.5mm to 2.0mm at the end, and one end of the puncture needle is solidified and encapsulated in a flexible rubber matrix.

4. The method of using the flexible and deformable portable adhesive film puncture device according to claim 1, characterized in that, The distance between two adjacent puncture needles is 3.0mm to 5.0mm, and the distance between the puncture end of the puncture needle and the end face of the flexible rubber substrate is 0.5mm to 1.0mm.

5. The method of using the flexible and deformable portable adhesive film puncture device according to claim 1, characterized in that, The vacuum sealing device includes a sealing strip, a breathable felt, a vacuum bag film, and a vacuum nozzle. During installation, the breathable felt is first laid on top of the flexible rubber substrate, the sealing strip is bonded to the repair component around the outer ring of the breathable felt, the bottom of the vacuum bag film is bonded to the breathable felt through the sealing strip, and the vacuum nozzle is installed on the vacuum bag film.

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