Bonding method of shell inner cavity shielding plate and shielding plate bonding auxiliary tool

Abstract

The invention relates to the technical field of bonding, and discloses a shielding plate bonding auxiliary tool which is suitable for assisting in bonding a shielding plate to an inner cavity of a shell, the shielding plate is attached to the inner wall of the inner cavity of the shell, and the shielding plate bonding auxiliary tool comprises a pressing plate assembly and filler; the pressing plate assembly comprises a pressing plate, and the pressing plate is used for being connected to the landing edge seam of the shielding plate in a pressing mode; and the filler is used for filling the inner cavity of the shell and extruding the shielding plate. The invention discloses a method for bonding a shielding plate in an inner cavity of a shell. The method comprises the following steps: bonding the shielding plate to the inner wall of the inner cavity of the shell; pressing the joint of the lapping edge of the shielding plate by using a pressing plate; and pouring the filler into the inner cavity of the shell until the inner cavity of the shell is full. According to the invention, the bonding effect and the bonding strength at the lapping edge of the shielding plate are improved, so that the shielding plate and the inner cavity of the shell are bonded more firmly.

Description

Technical Field

[0001] The present invention relates to the field of bonding technology, and particularly to a bonding method for a shielding plate in the inner cavity of a housing and an auxiliary tool for bonding the shielding plate. Background Art

[0002] The inner cavity of an inertial navigation system housing needs to provide a magnetic interference-free environment. To achieve strict magnetic shielding performance, a soft magnetic alloy magnetic shielding plate is usually pasted on the surface of the inner cavity of the housing. Such plate materials are thin, prone to deformation, with large fluctuations in bonding effect and poor bonding consistency. When bonding the magnetic shielding plate to the inner cavity of the housing, due to the complex structure with many bends and angular offsets in the inner cavity, special tooling cannot ensure uniform force on all parts. The bending and angular parts are in an edge state where they cannot receive force, resulting in unreliable bonding effects, and cracking and warping at the bending and overlapping parts. Moreover, the special tooling has low efficiency and poor bonding effect, affecting the product qualification rate. Summary of the Invention

[0003] Based on the above, the purpose of the present invention is to provide a bonding method for a shielding plate in the inner cavity of a housing and an auxiliary tool for bonding the shielding plate, so that the shielding plate is subjected to relatively uniform force and has a high bonding quality.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An auxiliary tool for bonding a shielding plate, which is suitable for assisting in bonding a shielding plate in the inner cavity of a housing. The shielding plate is attached to the inner wall of the inner cavity of the housing. Characteristically, the auxiliary tool for bonding the shielding plate includes a pressing plate assembly and a filler;

[0006] The pressing plate assembly includes a pressing plate, and the pressing plate is used for pressing at the overlapping joint of the shielding plate;

[0007] The filler is used for filling in the inner cavity of the housing and extruding the shielding plate.

[0008] As a preferred embodiment of the auxiliary tool for bonding a shielding plate, the pressing plate assembly further includes an adjusting member and a supporting member. The supporting member includes a first section and a second section arranged at an angle. The pressing plate is connected to the second section at an angle. The pressing plate and the first section are spaced apart in a first direction. The adjusting member is connected to the first section in a position-adjustable manner along the first direction for adjusting the distance between the first section and the pressing plate.

[0009] As a preferred embodiment of the auxiliary tool for bonding a shielding plate, the filler includes a first filling ball and a second filling ball, and the diameters of the first filling ball and the second filling ball are different.

[0010] As a preferred embodiment of the auxiliary tool for bonding a shielding plate, the auxiliary tool for bonding the shielding plate further includes a pressing block, and the pressing block can press on the filler.

[0011] A bonding method for a shielding plate in the inner cavity of a housing, based on the above-mentioned shielding plate bonding auxiliary tool, the bonding method includes the following steps:

[0012] Bond the shielding plate to the inner wall of the inner cavity of the housing;

[0013] Press the pressing plate against the overlapping joint of the shielding plate;

[0014] Pour the filling material into the inner cavity of the housing until the inner cavity of the housing is full.

[0015] As a preferred embodiment of the bonding method for a shielding plate in the inner cavity of a housing, before bonding the shielding plate to the inner wall of the inner cavity of the housing, it further includes:

[0016] Clean the inner cavity of the housing and the surface of the shielding plate;

[0017] Apply glue to the bonding area of the inner cavity of the housing and / or the surface of the shielding plate.

[0018] As a preferred embodiment of the bonding method for a shielding plate in the inner cavity of a housing, before applying glue to the bonding area of the inner cavity of the housing and / or the surface of the shielding plate, it further includes:

[0019] Put the shielding plate into the inner cavity of the housing for trial fitting, and trim and shape the shielding plate corresponding to the rounded corner area and the edge of the inner cavity of the housing.

[0020] As a preferred embodiment of the bonding method for a shielding plate in the inner cavity of a housing, the pressing plate assembly further includes an adjusting member and a supporting member. The supporting member includes a first section and a second section arranged at an angle. The pressing plate is angularly connected to the second section. The pressing plate and the first section are spaced apart in a first direction. The adjusting member is connected to the first section in a position-adjustable manner along the first direction for adjusting the distance between the first section and the pressing plate. Pressing the pressing plate against the overlapping joint of the shielding plate includes the steps of:

[0021] Place the pressing plate on the overlapping joint of the shielding plate, adjust the adjusting member so that the first section approaches the inner cavity of the housing, so that the pressing plate presses against the inner wall of the inner cavity of the housing.

[0022] As a preferred embodiment of the bonding method for a shielding plate in the inner cavity of a housing, after pouring the filling material into the inner cavity of the housing until the inner cavity of the housing is full, place the pressing block on the filling material.

[0023] As a preferred embodiment of the bonding method for a shielding plate in the inner cavity of a housing, after placing the pressing block on the filling material, wait for a preset curing time, then remove the pressing block, pour out the filling material, and remove the pressing plate.

[0024] The beneficial effects of the present invention are as follows:

[0025] The present invention provides an auxiliary tool for bonding a shielding plate, which includes a pressing plate assembly and a filler. The pressing plate assembly includes a pressing plate that can be pressed against the overlapping joint of the shielding plate to improve the bonding effect and strength at the overlapping part; the filler is used to fill the inner cavity of the housing and squeeze the shielding plate, making the bonding between the shielding plate and the inner cavity of the housing more firm, thereby avoiding warping and cracking of the bonded shielding plate and improving the bonding quality of the shielding plate.

[0026] The present invention also provides a method for bonding a shielding plate in the inner cavity of a housing, which includes bonding the shielding plate to the inner wall of the inner cavity of the housing, pressing the pressing plate against the overlapping joint of the shielding plate, and pouring the filler into the inner cavity of the housing until it is full. This method can improve the bonding effect and strength between the overlapping part of the shielding plate and the inner cavity of the housing, making the bonding between the shielding plate and the inner cavity of the housing more firm. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present invention and these drawings.

[0028] Figure 1 is an exploded view provided by an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram after bonding the shielding plate provided by an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of the auxiliary tool for bonding the shielding plate after bonding the shielding plate provided by an embodiment of the present invention.

[0031] Figure 4 is a schematic diagram of the auxiliary tool for bonding the shielding plate from another perspective after bonding the shielding plate provided by an embodiment of the present invention.

[0032] In the figure: 1, inner cavity of the housing; 2, shielding plate; 3, pressing plate assembly; 301, pressing plate; 302, adjusting member; 303, supporting member; 3031, first section; 3032, second section; 4, filler (part shown in the figure); 5, pressing block; 6, overlapping joint. Detailed Embodiments

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention. In addition, it should be noted that, for the sake of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0034] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the", and "on the" second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the", and "under the" second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] Embodiment 1

[0038] As Figure 1As shown in the figure, an embodiment of the present invention provides an auxiliary tool for bonding a shielding plate, which is applicable to assisting in bonding a shielding plate in the inner cavity of a housing. The shielding plate 2 is attached to the inner wall of the inner cavity 1 of the housing. The auxiliary tool for bonding the shielding plate includes a pressing plate assembly 3 and a filler 4. The pressing plate assembly 3 includes a pressing plate 301, and the pressing plate 301 is used to press the overlapping joint 6 of the shielding plate 2. The filler 4 is used to fill the inner cavity 1 of the housing and extrude the shielding plate 2. The pressing plate assembly 3 can press the overlapping joint 6 of the shielding plate 2 and the inner cavity 1 of the housing tightly, ensuring the bonding effect and bonding strength of the overlapping joint 6. The filler 4 fills the inner cavity 1 of the housing and extrudes the shielding plate 2, which can ensure that the bending and corner parts of the shielding plate 2 are evenly stressed after bonding and will not fall off. Thus, it can avoid warping and cracking of the shielding plate 2 after bonding and improve the bonding quality of the shielding plate 2. Specifically, the pressing plate assembly 3 further includes an adjusting member 302 and a supporting member 303. The supporting member 303 includes a first section 3031 and a second section 3032 arranged at an angle. The pressing plate 301 is connected to the second section 3032 at an angle. The pressing plate 301 and the first section 3031 are spaced apart along a first direction. The adjusting member 302 is connected to the first section 3031 in a position-adjustable manner along the first direction and is used to adjust the distance between the first section 3031 and the pressing plate 301. By changing the position of the adjusting member 302 in the first direction, the distance between the pressing block 5 and the overlapping joint 6 of the shielding plate 2 is adjusted, so that the pressing block 5 presses the overlapping joint 6 of the shielding plate 2 tightly, improving the bonding strength and at the same time avoiding warping of the overlapping joint 6 and improving the bonding quality. Exemplarily, the first section 3031 and the second section 3032 are in an L shape, that is, the first section 3031 and the second section 3032 are perpendicular to each other. Of course, in other embodiments, the angle between the first section 3031 and the second section 3032 can also be other angles.

[0039] In an embodiment of the present invention, a threaded hole is provided on the second section 3032. The adjusting member 302 includes a screw, and the screw is threadedly connected to the threaded hole. By screwing the screw, the screw can be made to approach the outer wall of the housing to pull the pressing plate 301 closer to the overlapping joint 6 of the shielding plate 2. By providing a screw, the cost can be reduced, the operation is simple, and the stability is better. Of course, in other embodiments, the adjusting member 302 can also be other structures, such as a snap pin, etc.

[0040] After the pressing plate assembly 3 is pressed against the overlapping joint 6, the filler 4 is placed so that the filler 4 presses the pressing plate 301 and the shielding plate 2. Specifically, the filler 4 includes a first filling ball and a second filling ball. The diameters of the first filling ball and the second filling ball are different, which can better fill each corner position of the inner cavity 1 of the housing and adapt to the filling of the inner cavity 1 of other complex and different-shaped housings, making the shielding plate 2 stressed evenly everywhere and not cracking or warping after bonding. In an embodiment of the present invention, the first filling ball and the second filling ball are preferably steel balls. The steel balls are heavy and can better press the shielding plate 2 and the inner cavity 1 of the housing tightly, improving the bonding effect of the shielding plate 2.

[0041] Furthermore, the shielding plate bonding auxiliary tool further includes a pressing block 5. After the filling balls fill the inner cavity 1 of the housing, the pressing block 5 can be placed on the filler 4 to further press the inner cavity 1 of the housing and the shielding plate 2, improving the bonding strength of the shielding plate 2.

[0042] Embodiment 2

[0043] The embodiment of the present invention further provides a method for bonding a shielding plate to the inner cavity of a housing, including the following steps:

[0044] S1: Bond the shielding plate 2 to the inner wall of the inner cavity 1 of the housing;

[0045] Preferably, before bonding the shielding plate 2 to the inner wall of the inner cavity 1 of the housing, it further includes:

[0046] S001: Clean the surfaces of the inner cavity 1 of the housing and the shielding plate 2; ensure that the bonding area of the shielding plate 2 is smooth and free of stains, avoiding phenomena such as poor bonding in local areas and the appearance of air bubbles, and improving the bonding effect of the shielding plate 2.

[0047] S002: Apply glue to the bonding area on the surface of the inner cavity 1 of the housing and / or the shielding plate 2. Prepare the glue according to the process requirements and apply glue to the bonding area on the surface of the inner cavity 1 of the housing and / or the shielding plate 2, and bond the shielding plate 2 to the inner wall of the inner cavity 1 of the housing. More preferably, before applying glue, it further includes the step: Place the shielding plate 2 in the inner cavity 1 of the housing for trial fitting, trim and shape the shielding plate 2 corresponding to the rounded corner area and the edge of the inner cavity 1 of the housing, so that the shielding plate 2 can better fit the inner wall surface of the inner cavity 1 of the housing, ensuring that the edges and corners of the housing and the shielding plate 2 can be smoothly bonded and the stress is uniform everywhere.

[0048] S2: Press the overlapping joint 6 of the shielding plate 2 with the pressing plate 301;

[0049] Specifically, the pressing plate assembly 3 further includes an adjusting member 302 and a supporting member 303. The supporting member 303 includes a first section 3031 and a second section 3032 arranged at an angle. The pressing plate 301 is connected to the second section 3032 at an angle. The pressing plate 301 and the first section 3031 are spaced apart in the first direction. The adjusting member 302 is connected to the first section 3031 in a position-adjustable manner along the first direction for adjusting the distance between the first section 3031 and the pressing plate 301. Pressing the pressing plate 301 against the overlapping joint 6 of the shielding plate 2 includes the steps:

[0050] S201: Place the pressing plate 301 on the overlapping joint 6 of the shielding plate 2 and adjust the adjusting member 302 so that the first section 3031 approaches the inner cavity 1 of the housing, so that the pressing plate 301 presses against the inner wall of the inner cavity 1 of the housing.

[0051] S202: Take the pressing plate 301, place the pressing plate 301 at the lap joint 6 of the shielding plate 2, make the lap of the shielding plate 2 flat, ensure the surface of the lap of the shielding plate 2 is flat, and ensure the bonding effect and bonding strength of the lap joint 6. Install the pressing plate assembly 3, change the position of the adjusting member 302 in the first direction so that the first section 3031 is close to the inner cavity 1 of the housing, lock the pressing plate 301 with the inner wall of the inner cavity 1 of the housing, and then press the shielding plate 2 against the inner cavity 1 of the housing to improve the bonding effect of the lap joint 6. In the embodiment of the present invention, the adjusting member 302 is a screw, and corresponding threaded holes are provided at the corresponding positions of the first section 3031, and the screw is screwed in to lock the pressing plate 301 with the inner wall of the inner cavity 1 of the housing.

[0052] S3: Pour the filler 4 into the inner cavity 1 of the housing until the inner cavity 1 is full;

[0053] Pour the filler 4 into the inner cavity 1 of the housing until the inner cavity 1 is full. In the embodiment of the present invention, the filler 4 is preferably steel balls of different sizes, which can better fill each corner position of the inner cavity 1 of the housing and adapt to the filling of the inner cavities 1 of other complex and different shapes, so that the shielding plate 2 is stressed evenly everywhere, and there is no cracking or warping after bonding. At the same time, the steel balls are heavy and the pressing effect is good.

[0054] Further, after step S3, it further includes:

[0055] S4: Place the pressing block 5 on the filler 4 to increase the pressure, so that the shielding plate 2 fits more closely with the inner cavity 1 of the housing and the bonding effect is better;

[0056] S5: After placing the pressing block 5 on the filler 4, wait for the preset curing time, then remove the pressing block 5, pour out the filler 4, and remove the pressing plate 301.

[0057] The method provided by the embodiment of the present invention can ensure that after the shielding plate 2 is pasted in the inner cavity 1 of the housing, the lap joint 6 of the shielding plate 2 is firmly bonded, the shielding plate 2 is stressed evenly everywhere, there are no quality problems such as cracking and warping, the bonding effect is good, and it can be adapted to different inner cavities and other complex inner cavities.

[0058] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An auxiliary tool for bonding a shielding plate, which is suitable for assisting in bonding a shielding plate to the inner cavity of a housing. The shielding plate is attached to the inner wall of the inner cavity of the housing, and is characterized in that, The shielding plate bonding auxiliary tool includes a pressing plate assembly and a filler; The pressing plate assembly includes a pressing plate which is used to press on the overlapping joint of the shielding plate; The filler is used to fill the inner cavity of the housing and press the shielding plate.

2. The shielding plate bonding auxiliary tool according to claim 1, wherein The pressing plate assembly further includes an adjusting member and a supporting member. The supporting member includes a first section and a second section arranged at an angle. The pressing plate is connected to the second section at an angle. The pressing plate and the first section are spaced apart in a first direction. The adjusting member is connected to the first section in a position-adjustable manner along the first direction and is used to adjust the distance between the first section and the pressing plate.

3. The shielding plate bonding auxiliary tool according to claim 1, wherein, The filler includes a first filling ball and a second filling ball, and the diameters of the first filling ball and the second filling ball are different.

4. The shielding plate bonding auxiliary tool according to claim 1, characterized in that The shielding plate bonding auxiliary tool further includes a pressing block which can press on the filler.

5. A bonding method for the shielding plate of the inner cavity of the housing, based on the shielding plate bonding auxiliary tool described in any one of claims 1-4, characterized in that, The bonding method includes the following steps: Bond the shielding plate to the inner wall of the inner cavity of the housing; Press the overlapping joint of the shielding plate with the pressing plate; Pour the filler into the inner cavity of the housing until the inner cavity of the housing is full.

6. The method for improving the bonding strength according to claim 5, characterized in that Before bonding the shielding plate to the inner wall of the inner cavity of the housing, it further includes: Clean the inner cavity of the housing and the surface of the shielding plate; Apply glue to the bonding part of the inner cavity of the housing and / or the surface of the shielding plate.

7. A method for improving the bonding strength according to claim 6, characterized in that, Before applying glue to the bonding part of the inner cavity of the housing and / or the surface of the shielding plate, it further includes: Put the shielding plate into the inner cavity of the housing for trial fitting, and trim and shape the shielding plate corresponding to the rounded corner area and the edge of the inner cavity of the housing.

8. A method for improving the bonding strength according to claim 5, characterized in that, The pressing plate assembly further includes an adjusting member and a supporting member. The supporting member includes a first section and a second section arranged at an angle. The pressing plate is connected to the second section at an angle. The pressing plate and the first section are spaced apart in a first direction. The adjusting member is connected to the first section in a position-adjustable manner along the first direction and is used to adjust the distance between the first section and the pressing plate. Pressing the pressing plate on the overlapping joint of the shielding plate includes the steps of: Place the pressing plate on the overlapping joint of the shielding plate, and adjust the adjusting member so that the first section approaches the inner cavity of the housing to make the pressing plate press the inner wall of the inner cavity of the housing.

9. A method for improving the bonding strength according to claim 5, characterized in that, After pouring the filler into the inner cavity of the housing until the inner cavity of the housing is full, place the pressing block on the filler.

10. A method for improving the bonding strength according to claim 9, characterized in that, After placing the pressing block on the filler, wait for a preset curing time, then remove the pressing block, pour out the filler, and remove the pressing plate.

Images