A pressing mechanism and pressing method for thin film type corner board back film adhesion

Abstract

The application discloses a kind of for corner board back film adhesion of thin film type pressing mechanism and pressing method, pressing mechanism includes assembly platform, press frame, lifting screw, air bag structure plate, air bag pressure head, hot-pressing composite board, the air bag pressure head is used to be pressed by inflating hot-pressing composite board on the back film of corner board, the hot-pressing composite board includes hard pressing plate and heating plate, the hard pressing plate is set on heating plate, two bending grooves are arranged on the heating plate, the heating plate is used to heat film, two bending grooves are used to realize the bending of heating plate, the hard pressing plate is combined by three sub-pressing plates, there are two separation areas between three sub-pressing plates, two separation areas are located at two bending grooves respectively.The application not only can improve the pressing effect of film on the back of corner board, ensure the flatness of film without bubble and corrugation, but also can greatly reduce the curing time of glue, improve the installation efficiency of film.

Description

Technical Field

[0001] This invention belongs to the field of liquefied natural gas and relates to the bonding and installation technology of the back film of a film-type corner panel. Specifically, it relates to a pressing mechanism and pressing method for bonding the back film of a film-type corner panel. Background Technology

[0002] Due to the characteristics of LNG (liquefied natural gas), both LNG transportation and storage require insulating materials for protection. Thin-film insulating panels account for over 90% of the market share in the LNG shipping industry, with the MARK III type being the most prevalent. Thin-film corner panels are a type of thin-film insulating panel, installed at the corners of the bulkhead, specifically as shown below. Figure 1 As shown.

[0003] like Figure 2 As shown, the existing installation method for film-type corner panels involves adhering a film to the back of the corner panel, and then using the film to install the corner panel. The existing film installation method uses adhesive to achieve adhesion, and then uses a tooling to ensure the film is properly bonded to the back of the corner panel. This film installation method has some drawbacks, as follows:

[0004] 1. The film's adhesion is not ideal; it is difficult to achieve a flat surface and it is prone to air bubbles and ripples.

[0005] 2. The adhesive needs to be fully cured before the film can be finally installed. The curing process usually takes 10-12 hours, which makes the installation efficiency of the film relatively low. Summary of the Invention

[0006] Purpose of the invention: In order to overcome the shortcomings of the prior art, a pressing mechanism and pressing method for film bonding on the back of a film-type corner panel are provided. This not only improves the pressing effect of the film on the back of the corner panel, ensuring the flatness of the film and eliminating bubbles and ripples, but also significantly reduces the curing time of the adhesive and improves the installation efficiency of the film.

[0007] Technical Solution: To achieve the above objectives, this invention provides a pressing mechanism for bonding the back film of a film-type corner panel, comprising an assembly platform for fixing the corner panel, a press frame, a lifting screw mounted on the press frame, an airbag structure plate mounted at the bottom of the lifting screw, an airbag pressure head mounted on the airbag structure plate, and a hot-press composite plate matching the airbag pressure head. The lifting screw is connected to a servo motor and controls the airbag pressure head to perform a pressing action. The airbag pressure head is used to press the hot-press composite plate onto the back film of the corner panel by inflation. The hot-press composite plate includes a rigid pressure plate and a heating plate. The rigid pressure plate is mounted on the heating plate, which has two bending grooves. The heating plate heats the film, and the two bending grooves bend the heating plate. The rigid pressure plate is composed of three sub-pressure plates, with two separating areas between the three sub-pressure plates, each located at one of the two bending grooves.

[0008] Furthermore, a fiberglass cloth is provided between the heating plate and the rigid pressure plate. The fiberglass cloth not only enables the heating plate and the rigid pressure plate to be connected together with high strength, but also has good flexibility, which can ensure that the heating plate and the rigid pressure plate can be bent synchronously.

[0009] Furthermore, the dividing areas are symmetrically arranged above the bending groove.

[0010] Furthermore, the heating plate is a silicone heating plate, the rigid pressure plate is a birch peat pressure plate, and the airbag pressure head is a silicone airbag pressure head.

[0011] Furthermore, the airbag inflator and the airbag structure plate form an airbag cavity, and the airbag inflator is provided with an inflation connector.

[0012] Furthermore, the assembly platform is provided with a slide rail and two adjustable sliding supports that cooperate on the slide rail. The two adjustable sliding supports are respectively matched with the two sides of the corner plate, and the two adjustable sliding supports are used to position and fix the corner plate on the assembly platform.

[0013] Furthermore, a temperature sensor is provided on the heating plate.

[0014] The present invention also provides a pressing method for bonding a thin film to the back of a thin film corner panel, comprising the following steps:

[0015] S1: Place the corner panel with the back facing up on the assembly platform, and use two sliding adjustable supports to position and fix the corner panel;

[0016] S2: Apply glue to the bonding area on the back of the corner board and manually cover the bonding area with the film;

[0017] S3: Smooth the film with a roller brush to initially press out its shape and remove residual glue and air bubbles;

[0018] S4: Place the hot-pressed composite plate on the film, and then use the servo motor to control the lifting screw to lower the airbag pressure head until the airbag pressure head contacts the rigid pressure plate of the hot-pressed composite plate.

[0019] S5: The airbag cavity is inflated through the airbag inflator, causing the airbag inflator to gradually expand and press down on the hot-pressed composite plate. Under the pressure of the airbag inflator, the rigid plate bends downward from the two separating areas, and the heating plate bends downward from the two bending grooves.

[0020] S6: The downward-bending heating plate gradually contacts the film until it is completely and tightly pressed onto the film;

[0021] S7: The heating plate, which has already been heated, transfers heat to the film and the adhesive on the film. The adhesive cures rapidly within the temperature control range of the heating plate, thus completing the bonding and installation of the film on the back of the corner plate.

[0022] Furthermore, in step S5, the pressure inside the airbag cavity is set to 200Kpa-300Kpa.

[0023] Furthermore, in step S7, the temperature control range of the heating plate is 60-80℃.

[0024] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0025] 1. By gradually increasing the pressure through the airbag inflator, the hot-pressed composite plate is bent and pressed downwards. Utilizing the gradual bending and pressing, along with the high elasticity of the heating plate, the film can be self-adaptively pressed, ensuring the flatness of the film on the back of the corner panel without bubbles or ripples. The adhesion and installation effect of the film is improved, thereby guaranteeing the subsequent use effect of the corner panel.

[0026] 2. Through the selection of materials and structural design of the heating plate, while ensuring the heating plate has high flexibility, the heating plate also has a heating function. It can heat the film and adhesive during the pressing process, and the effect of heating is to accelerate the curing of the adhesive, thereby greatly reducing the curing time of the adhesive and improving the overall efficiency of film installation. Attached Figure Description

[0027] Figure 1 A schematic diagram showing the installation of corner panels on the bulkhead;

[0028] Figure 2 This is a schematic diagram showing the position of the film on the corner plate;

[0029] Figure 3 This is a schematic diagram of the structural connection of the pressing mechanism;

[0030] Figure 4 An exploded view of the film pressing mechanism;

[0031] Figure 5 This is a schematic diagram of the planar structure of the hot-pressed composite panel;

[0032] Figure 6 This is a top view of the heating plate. Detailed Implementation

[0033] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0034] like Figure 3 and Figure 4 As shown, the present invention provides a pressing mechanism for bonding the film on the back of a film-type corner panel, including an assembly platform 1 for fixing the corner panel, a press frame 3, a lifting screw 4 set on the press frame 3, an airbag structure plate 5 set at the bottom of the lifting screw 4, an airbag pressure head 6 set on the airbag structure plate 5, and a hot-press composite plate 7 matched with the airbag pressure head 6. The lifting screw 4 is connected to a servo motor and is used to control the airbag pressure head 6 to perform a pressing action. The airbag pressure head 6 and the airbag structure plate 5 form an airbag cavity 61. The airbag pressure head 6 is provided with an inflation connector (not shown in the figure). The airbag pressure head 6 is used to press the hot-press composite plate 7 onto the film 8 on the back of the corner panel 100 by inflation. The assembly platform 1 is provided with a slide rail and two sliding adjustable support members 2 that cooperate with the slide rail. The two sliding adjustable support members 2 are respectively matched with the two sides of the corner panel 100 and are used to position and fix the corner panel 100 on the assembly platform 1.

[0035] like Figure 5 and Figure 6 As shown, the hot-pressed composite plate 7 includes a rigid pressure plate 9 and a heating plate 11. A fiberglass cloth 10 is disposed between the heating plate 11 and the rigid pressure plate 9. The rigid pressure plate 9 is composed of three pressure plates, and there are two partition areas 12 between the three pressure plates. Two bending grooves 13 are provided on the heating plate 11. The two partition areas 12 are symmetrically arranged above the two bending grooves 13. A temperature sensor 14 and a power cord 15 are provided on the heating plate 11.

[0036] In this embodiment, the heating plate 11 is a silicone heating plate, the hard pressure plate 9 is a birch peat pressure plate, and the airbag pressure head 6 is a silicone airbag pressure head.

[0037] like Figure 5 and Figure 6 As shown, the design and manufacturing method of the hot-pressed composite plate 7 is as follows: the dimensions of the three pressure plates are determined according to the dimensions of the back of the corner plate 100 and the film 8. The three pressure plates are pasted on the fiberglass cloth 10 with a thickness of about 1 mm according to the corresponding positions and flattened by a press. Two partition areas 12 are formed between the three pressure plates. The three pressure plates are combined to form a rigid pressure plate 9. The rigid pressure plate 9 can be bent at will. Then, a heating plate 11 of silicone material with a custom size and a thickness of about 1.7 to 2.0 mm is pasted and fixed on the fiberglass cloth 10 with glue and flattened by a low-pressure press to obtain an integral hot-pressed plate. The structural design of the two bending grooves 13 of the heating plate 11 ensures that the quality of the heating wire inside the heating plate 11 is not affected by long-term frequent bending, and ensures that the hot-pressed plate 11 is durable.

[0038] In this embodiment, the aforementioned pressing mechanism is used for bonding and fixing the film 8 to the back of the corner plate 100, providing a pressing method for bonding the film to the back of a film-type corner plate, as described above. Figures 3-6 It includes the following steps:

[0039] S1: Place the corner plate 100 with its back facing up on the assembly platform 1, and use two sliding adjustable supports 2 to position and fix the corner plate 100.

[0040] S2: Use cryogenic epoxy resin as adhesive, apply adhesive evenly to the bonding area on the back of corner board 100, and manually cover the bonding area with film 8.

[0041] S3: Smooth the film 8 with a roller brush, initially press out the shape and remove most of the air bubbles remaining in the glue;

[0042] S4: Place the hot-pressed composite plate 7 on the film 8, and then control the lifting screw 4 through the servo motor to lower the airbag pressure head 6 until the airbag pressure head 6 contacts the hard pressure plate 9 of the hot-pressed composite plate 7.

[0043] S5: The air source is connected through the inflation connector of the airbag head 6 to gradually inflate the airbag cavity 61. The pressure inside the airbag cavity 61 is set to 200Kpa-300Kpa, so that the airbag head 6 gradually expands and performs a downward action on the hot-pressed composite plate 7. Under the downward action of the airbag head 6, the rigid plate 9 of the hot-pressed composite plate 7 bends downward from the two separation areas 12, and the heating plate 11 bends downward from the two bending grooves 13.

[0044] S6: The downward-bent heating plate 11 gradually contacts the film 8 until it is completely and tightly pressed onto the film 8, ensuring that the film 8 and the back of the corner plate 100 are firmly attached, squeezing out the air bubbles in the film 8, and pressing the surface of the film 8 into a flat and wave-free shape.

[0045] S7: The heating plate 11 is powered on and heated up. The temperature of the heating plate is controlled within the range of 60-80℃ by the temperature sensor 14. The heating plate 11, which has been heated up, transfers the temperature to the film 8 and the adhesive on the film 8. The adhesive is rapidly cured within the temperature control range of the heating plate 11, and finally the film 8 is bonded and installed on the back of the corner plate 100.

[0046] Compared with existing simple tooling bonding methods, the above-mentioned bonding method of the present invention has the following advantages:

[0047] 1. By gradually increasing the pressure of the airbag inflator 6, the hot-pressed composite plate 9 is bent and pressed downwards. Utilizing the gradual bending and pressing to bond the film 8 and the high elasticity of the heating plate 11, the film 8 can be self-adaptively pressed, ensuring the flatness of the film 8 on the back of the corner plate 100 without bubbles or ripples. The adhesion and installation effect of the film 8 is improved, thereby ensuring the subsequent use effect of the corner plate 100.

[0048] 2. Through the selection of materials and structural design of the heating plate 11, while ensuring the high flexibility of the heating plate 11, the heating plate 11 also has a heating function, which can heat the film 8 and the adhesive during the pressing process. The effect of heating is to accelerate the curing of the adhesive, thereby significantly reducing the curing time of the adhesive and improving the overall efficiency of film installation. In this embodiment, the curing time of the adhesive in the existing tooling bonding method is 10-12 hours, while the curing time of the adhesive in the invented bonding method can be reduced to 2-2.5 hours, which can reduce the curing time of the adhesive by 75% to 80%.

Claims

1. A pressing method for bonding a thin film to the back of a thin-film corner panel, characterized in that, The pressing mechanism includes an assembly platform for fixing the corner plate, a press frame, a lifting screw mounted on the press frame, an airbag structure plate at the bottom of the lifting screw, an airbag pressure head mounted on the airbag structure plate, and a hot-press composite plate matching the airbag pressure head. The lifting screw is connected to a servo motor and controls the airbag pressure head to perform a pressing action. The airbag pressure head is used to press the hot-press composite plate onto the back film of the corner plate by inflation. The hot-press composite plate includes a rigid pressure plate and a heating plate. The rigid pressure plate is mounted on the heating plate and has two bending grooves. The heating plate is used to heat the film, and the two bending grooves are used to bend the heating plate. The rigid pressure plate is composed of three sub-pressure plates with two separating areas between them, located at the two bending grooves respectively. Fiberglass cloth is placed between the heating plate and the rigid pressure plate. The heating plate is a silicone heating plate, the rigid pressure plate is a birch peat plate, and the airbag pressure head is a silicone airbag pressure head. The pressing method includes the following steps: S1: Place the corner panel with the back facing up on the assembly platform, and use two sliding adjustable supports to position and fix the corner panel; S2: Apply glue to the bonding area on the back of the corner board and manually cover the bonding area with the film; S3: Smooth the film with a roller brush to initially press out its shape and remove residual glue and air bubbles; S4: Place the hot-pressed composite plate on the film, and then use the servo motor to control the lifting screw to lower the airbag pressure head until the airbag pressure head contacts the rigid pressure plate of the hot-pressed composite plate. S5: The airbag cavity is inflated through the airbag inflator, causing the airbag inflator to gradually expand and press down on the hot-pressed composite plate. Under the pressure of the airbag inflator, the rigid plate bends downward from the two separating areas, and the heating plate bends downward from the two bending grooves. S6: The downward-bending heating plate gradually contacts the film until it is completely and tightly pressed onto the film; S7: The heating plate, which has already been heated, transfers heat to the film and the adhesive on the film. The adhesive cures rapidly within the temperature control range of the heating plate, thus completing the bonding and installation of the film on the back of the corner plate.

2. The pressing method for bonding a thin film to the back of a thin-film corner panel according to claim 1, characterized in that, The dividing areas are symmetrically arranged above the bending groove.

3. The pressing method for bonding a thin film to the back of a thin-film corner panel according to claim 1, characterized in that, The airbag inflator and the airbag structure plate form an airbag cavity, and the airbag inflator is provided with an inflation connector.

4. The pressing method for bonding a thin film to the back of a thin-film corner panel according to claim 1, characterized in that, The assembly platform is equipped with a slide rail and two adjustable sliding supports that cooperate with the slide rail. The two adjustable sliding supports are respectively matched with the two sides of the corner plate and are used to position and fix the corner plate on the assembly platform.

5. The pressing method for bonding a thin film to the back of a thin film corner panel according to claim 1, characterized in that, A temperature sensor is installed on the heating plate.

6. The pressing method for bonding a thin film to the back of a thin-film corner panel according to claim 1, characterized in that, In step S5, the pressure inside the airbag cavity is set to 200 kPa-300 kPa.

7. The pressing method for bonding a thin film to the back of a thin-film corner panel according to claim 1, characterized in that, In step S7, the temperature control range of the heating plate is 60-80℃.

Images