A panel bonding and sealing process and bonding mold thereof

Abstract

The present invention discloses a panel bonding and sealing process, which utilizes a panel bonding mold to bond the panel and the frame with adhesives of different properties at different positions where the panel and the frame are connected. A special bonding mold is used between the panel and the frame, which has a good supporting effect and is easy to bond. After bonding is completed, the bonded panel and frame are evacuated, and the gaps between the two adhesives after evacuation are squeezed by the vacuum, so that the frame and the panel are more closely attached, and the bonding performance can be maintained in various harsh environments. At the same time, a panel bonding mold used is also disclosed, including a mold base, a mold cover plate, and a frame and panel for bonding. The mold base also has a gap sheet device for auxiliary bonding, and the gap sheet device is detachably arranged on the mold base. The gap sheet device used for bonding is detachably arranged through a groove, which greatly facilitates the use of the gap sheet and makes the bonding process of the panel and the frame more concise and efficient.

Description

Technical Field

[0001] The invention relates to a panel and frame bonding technology, in particular to a panel bonding sealing process and a bonding mold thereof. Background Art

[0002] Various digital products, medical devices and other display control panels are generally glued to the frame with adhesives. Although this can ensure the stability between the panel and the frame, using a single adhesive to bond the panel and the frame can only ensure the normal use of the product under normal climatic conditions. When the panel and frame bonded with a single adhesive encounter a harsh environment such as a construction site, cold storage, mine, extreme cold, water immersion, contact with solvents, high temperature, etc., the display panel and the frame will crack or separate.

[0003] Moreover, when single-layer or multi-layer adhesive is used directly, the adhesive process and adhesive position are often directly applied at one position for bonding. The bonding process is relatively simple and the bonding effect is poor. It is difficult to adapt to harsh environments such as construction sites, cold storages, mines, extreme cold, immersion in water, contact with solvents, high temperatures, etc. to achieve a safe and stable bonding effect. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a panel bonding and sealing process and a bonding mold thereof, which are adapted to harsh environments by applying adhesives with different properties and a special processing method at different connection positions of the frame and the panel with the help of a bonding mold.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a panel bonding and sealing process, comprising the following steps:

[0006] Step 1: Clean the panel and frame;

[0007] Step 2: Place the frame into the panel bonding mold;

[0008] Step 3: Apply glue to the frame for the first time according to the glue amount and position set by the glue dispenser;

[0009] Step 4: Place the panel and install the spacer device, select a suitable spacer, and install the spacer device at the corresponding position on the panel bonding mold, and adjust the gap between the panel and the frame and the spacer, and close the upper cover of the panel bonding mold after adjusting to the appropriate position;

[0010] Step 5: Use a pressure holding device to hold the bonded panel and frame under pressure. The pressure holding device is set to room temperature. The pressure holding value is set according to the bonding area. The pressure holding time is 30 minutes to 2 hours.

[0011] Step 6: Take out the gap piece;

[0012] Step 7: Apply glue for the second time according to the glue amount and position set by the glue dispenser;

[0013] Step 8: Trim the glued position after standing still. Let it stand still first. After the glue is completely solidified, trim the glued position. If there is a missing glued position, fill it with glue and trim it again.

[0014] As an improvement of the above technical solution, the glue applied in step 3 is structural glue, and the coating position is at the position where the top surface of the frame connects with the bottom of the panel;

[0015] As a further improvement of the above technical solution, the structural adhesive is moisture-curing polyurethane glue, and the thickness of the moisture-curing polyurethane glue is 0.1 mm to 0.15 mm.

[0016] As a further improvement of the above technical solution, the glue applied in step seven is a sealant, and the coating position is where the side of the panel is connected to the side of the frame.

[0017] As a further improvement of the above technical solution, the sealant is modified silane, and the thickness of the modified silane is 0.4 mm to 1 mm.

[0018] As a further improvement of the above technical solution, there is a vacuuming process between step seven and step eight. The vacuuming process is: putting the bonded panel and frame into a vacuum machine at the same time, setting the vacuum machine to one atmospheric pressure, and setting the time to 15s for vacuuming.

[0019] A panel bonding mold comprises a mold base, a mold cover plate, and a frame and panel for bonding. The mold base comprises a groove portion for placing the frame and the panel and an edge portion wrapping the groove portion. The mold cover plate is used to cover the panel and the frame after being coated with glue. The mold base is also provided with a gap piece device for auxiliary bonding. The gap piece device is detachably arranged on the mold base.

[0020] As an improvement of the above technical solution, a gap sheet installation groove is provided on the mold base, and the gap sheet installation groove is arranged at the edge of the mold base, and multiple gap sheet installation grooves are provided on the edge of the mold base. The gap sheet installation groove includes a slot hole and slot hole walls arranged on both sides of the slot hole, and the gap sheet device is clamped in the slot hole through the slot hole wall.

[0021] As a further improvement of the above technical solution, eight gap sheet installation grooves are provided, two gap sheet installation grooves are provided on each edge of the mold base, and a gap sheet is also provided at the end of the gap sheet device. The gap sheet is detachably fixed on the gap sheet device and corresponds to the position of the frame gluing.

[0022] As a further improvement of the above technical solution, the groove portion of the mold base is also provided with a support block for placing the frame, and the combined shape of the groove portion and the support block corresponds to the shape of the bottom of the frame. The edge portion of the mold base is also provided with an opening groove, and the opening groove is used to assist in opening the mold cover plate. The opening groove is arranged on the edge portions of the two vertical sides of the mold base.

[0023] The beneficial effects of the present invention are as follows: the panel bonding and sealing process of the present invention provides a process of bonding the panel and the frame using adhesives of different properties at different positions where the panel and the frame are connected using a panel bonding mold. A special bonding mold is used between the panel and the frame, which has a good support effect and is easy to bond. After bonding is completed, the bonded panel and frame are evacuated, and the gaps between the two adhesives after evacuation are squeezed by the vacuum, so that the frame and the panel are more tightly attached, and the bonding performance can be maintained in various harsh environments. At the same time, a bonding mold for coating is also disclosed, and the gap sheet device used for bonding is detachably arranged through a groove, which greatly facilitates the use of the gap sheet and makes the bonding process of the panel and the frame more concise and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a process flow chart of the present invention;

[0026] Figure 2 It is a schematic diagram of the bonding position between the frame and the panel of the present invention;

[0027] Figure 3 It is a schematic diagram of the assembly of the panel bonding mold of the present invention;

[0028] Figure 4 It is a schematic diagram of the explosion of the panel bonding mold of the present invention.

[0029] 1. Mold seat; 11. Groove part; 12. Edge part; 13. Support block; 14. Covering groove; 2. Mold cover plate; 3. Frame; 4. Panel; 5. Spacer device; 6. Spacer; 7. Structural adhesive; 8. Sealant. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0031] Reference Figure 1 , Figure 2 , a panel 4 bonding and sealing process, comprising the following steps:

[0032] Step 1: Clean the panel 4 and the frame 3; use alcohol wiping or other methods to clean the position where the panel 4 and the frame need to be bonded, so that there is no debris between the two. During the bonding process, the glue will not be affected by the debris, ensuring the smoothness and stability of the bonding.

[0033] Step 2: Place the frame 3 into the panel 4 bonding mold; first align the concave position on the frame 3 with the groove part 11 and the support block 13 on the panel 4 bonding mold, and place the frame 3 into the groove part 11.

[0034] Step 3: Apply glue for the first time according to the glue amount and position set by the glue dispenser; the first application of glue is structural glue 7, and the application position is at the position where the top surface of the frame 3 is connected to the bottom of the panel 4. Specifically, the structural glue 7 is moisture-curing polyurethane glue, and the thickness of the moisture-curing polyurethane glue is 0.1mm to 0.15mm. The moisture-curing polyurethane glue forms a preliminary fixation and bonding of the frame 3 and the panel 4, and fixes the position of the panel 4 and the frame 3.

[0035] Step 4: Place the panel 4 and install the gap piece device 5; after the first application of glue, place the panel 4 to be bonded at the corresponding bonding position on the frame 3. Then replace the appropriate gap piece 6, and install the gap piece device 5 at the corresponding position on the panel 4 bonding mold, and adjust the gap piece 6 at the same time. After adjusting the gap piece 6 to the appropriate position, cover the mold cover plate 2 of the panel 4 bonding mold.

[0036] Step 5: Use a pressure-maintaining device to maintain pressure on the bonded panel 4 and frame 3; the pressure-maintaining device is set to room temperature, the pressure-maintaining value is set according to the bonding area, and the pressure-maintaining time is thirty minutes to two hours. The purpose of pressure-maintaining is to press out the air between the panel 4 and the frame 3, and to keep the surface where the moisture-curing polyurethane glue applied contacts the panel 4 and the frame 3 in a flat and horizontal state, to ensure that the panel 4 and the frame 3 can remain horizontal after bonding, and to increase the balance and stability between the two.

[0037] Step 6: Take out the gap piece 6; open the cover plate of the panel 4 bonding mold, and then take out all the gap piece devices 5.

[0038] Step 7: Apply glue for the second time according to the glue amount and position set by the glue dispenser; the glue applied for the second time is sealant 8, and the coating position is at the position where the side of the panel 4 is connected to the side of the frame 3. Specifically, the sealant 8 is modified silane, and the thickness of the modified silane is 0.4mm to 1mm. Although moisture-curing polyurethane glue has good bonding performance, its waterproof and anti-corrosion effects are poor. Therefore, it is necessary to apply a layer of modified silane on the outside of the moisture-curing polyurethane glue. The modified silane has sealing and waterproof properties, so that the frame 3 and panel 4 after bonding can adapt to relatively harsh environments such as construction sites, mines, immersion, contact with solvents, high temperatures, etc., which improves the environmental adaptability of the product.

[0039] Step 8: Vacuum the bonded panel 4 and frame 3; the vacuuming process is: put the bonded panel 4 and frame 3 into the vacuum machine at the same time, set the vacuum machine to one atmosphere, and set the time to 15s for vacuuming. The vacuum machine mainly vacuums the bonding position between the panel 4 and the frame 3, vacuums the environment around the two glue coating positions, and vacuums the inside of the two glues at the same time, exhausts the air inside the two glues, makes the fit between the panel 4 and the frame 3 tighter, increases the waterproof and anti-corrosion effect, and makes the product further adaptable to harsh environments such as construction sites, cold storages, mines, extreme cold, immersion in water, contact with solvents, and high temperatures.

[0040] Step 9: trim the glued position after standing still. When trimming, first stand still, wait for the glue to completely solidify, and then trim the glued position, trim the excess part when applying glue, so that the product surface remains clean and tidy. If there is a missing glued position, fill in the glue and trim it again.

[0041] Reference Figure 3 , Figure 4In step three of the panel 4 bonding and sealing process, an auxiliary bonding panel 4 bonding mold is used. The panel 4 bonding mold includes a mold base 1, a mold cover plate 2, and a frame 3 and panel 4 for bonding. The mold base 1 includes a groove portion 11 for placing the frame 3 and the panel 4 and an edge portion 12 that wraps the groove portion 11. After the frame 3 and the cover plate are placed in the groove portion 11 on the mold base 1, the mold base 1 supports and limits the frame 3 and the panel 4, ensuring the stability of the panel 4 and the frame 3 during the bonding process. The mold cover plate 2 is used to cover the panel 4 and the frame 3 after the glue is applied. The mold base 1 also has an auxiliary bonding gap sheet device 5, which is detachably arranged on the mold base 1. The gap sheet device 5 enables the mold to occupy the position of the second glue application when the first glue application is performed, so that the position of the second glue application will not be occupied by the glue applied for the first time, thereby increasing the convenience of the glue application process.

[0042] Since the gap sheet device 5 needs to be disassembled during the bonding process between the frame 3 and the panel 4, the gap sheet device 5 is detachably mounted on the upper shell of the mold base 1. Preferably, the gap sheet device 5 can be installed by using a mounting groove. The mold base 1 is provided with a gap sheet 6 mounting groove, which is arranged at the edge of the mold base 1, and a plurality of gap sheet 6 mounting grooves are arranged at the edge portion 12 of the mold base 1. The gap sheet 6 mounting groove includes a slot hole and slot hole walls arranged on both sides of the slot hole, and the gap sheet device 5 is clamped in the slot hole through the slot hole walls. Since the gap sheet device 5 is subjected to less force during the bonding process, clamping the gap sheet device 5 directly through the slot hole can not only realize the detachable installation of the gap sheet device 5, but also be simple to operate, thereby improving the bonding efficiency of the frame 3 and the panel 4.

[0043] There are eight installation slots for the gap sheet 6, and two installation slots for the gap sheet 6 are set on each edge of the mold base 1. The end of the gap sheet device 5 is also provided with a gap sheet 6, and the gap sheet 6 is detachably fixed on the gap sheet device 5 and corresponds to the position of the gluing of the frame 3. The mold base 1 can often adapt to different mold bases 1 and panels 4 when supporting and positioning the frame 3 and the panel 4. Different frames 3 and panels 4 require different glue coating thicknesses when bonding, so the corresponding gap sheets 6 have different thicknesses. The gap sheets 6 are arranged in a detachable form on the gap sheet device 5 to meet the needs of different panels 4 and frames 3 for gap sheets 6 of different thicknesses.

[0044] The groove portion 11 of the mold base 1 is also provided with a support block 13 for placing the frame 3. The combined shape of the groove portion 11 and the support block 13 corresponds to the shape of the bottom of the frame 3. The edge portion 12 of the mold base 1 is also provided with a cover opening groove 14. The cover opening groove 14 is used to assist in opening the mold cover plate 2. The cover opening groove 14 is set at the edge portion 12 of the two vertical sides of the mold base 1. The setting of the cover opening groove 14 is not only convenient for placing and removing the panel 4 and the frame 3 in the mold base 1, but also convenient for covering the mold cover plate 2 on the mold base 1, which is convenient for the bonding operation.

[0045] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A panel bonding and sealing process, characterized in that: The following steps are involved: Step 1: Clean the panel and frame; Step 2: Place the frame into the groove portion of the panel bonding mold; Step 3: Apply glue for the first time according to the glue amount and position set by the glue dispenser. The coating position is where the top surface of the frame connects to the bottom of the panel. Step 4: Place the panel and install the spacer device, select a suitable spacer, and install the spacer device at the corresponding position on the panel bonding mold, and adjust the gap between the panel and the frame and the spacer, and close the mold cover of the panel bonding mold after adjusting to the appropriate position; Step 5: Use a pressure holding device to hold the bonded panel and frame under pressure. The pressure holding device is set to room temperature. The pressure holding value is set according to the bonding area. The pressure holding time is 30 minutes to 2 hours. Step 6: Open the mold cover of the panel bonding mold, and then take out all the gap piece devices; Step 7: Apply glue for the second time according to the glue amount and position set by the glue dispenser. The coating position is where the side of the panel connects with the side of the frame. Step 8: trim the glued position after standing still. When trimming, first stand still, and trim the glued position after the glue is completely solidified. If there is a missing glued position, fill the glue and trim it again; There is a vacuuming process between step 7 and step 8, and the vacuuming process is: putting the bonded panel and frame into a vacuum machine at the same time, setting the vacuum machine to one atmospheric pressure, and setting the time to 15 seconds for vacuuming; The glue applied in step 3 is structural glue; The glue applied in step seven is sealant; The panel bonding mold comprises a mold base, a mold cover plate, and a frame and a panel for bonding. The mold base comprises a groove part for placing the frame and the panel and an edge part for wrapping the groove part. The mold cover plate is used to cover the panel and the frame after gluing. The mold base is also provided with a gap piece device for auxiliary bonding. The gap piece device is detachably arranged on the mold base. A gap piece is also arranged at the end of the gap piece device. The gap piece is detachably fixed on the gap piece device and corresponds to the position of gluing the frame. The mold base is provided with a gap piece installation groove, which is arranged at the edge of the mold base, and a plurality of gap piece installation grooves are arranged at the edge part of the mold base. The gap piece installation groove comprises a slot hole and slot hole walls arranged on both sides of the slot hole. The gap piece device is clamped in the slot hole through the slot hole walls. The groove part of the mold base is also provided with a support block for placing the frame. The combined shape of the groove part and the support block corresponds to the shape of the bottom of the frame. The edge part of the mold base is also provided with a cover opening groove, which is used to assist in opening the mold cover plate. The cover opening groove is arranged at the edge part of the two vertical sides of the mold base.

2. A panel bonding and sealing process according to claim 1, characterized in that: The structural adhesive is moisture-curing polyurethane glue, and the thickness of the moisture-curing polyurethane glue is 0.1 mm to 0.15 mm.

3. A panel bonding and sealing process according to claim 1, characterized in that: The sealant is modified silane, and the thickness of the modified silane is 0.4 mm to 0.6 mm.

4. A panel bonding and sealing process according to claim 1, characterized in that: There are eight gap piece installation grooves, and two gap piece installation grooves are arranged on each edge of the mold base.

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