CN114382764A - Sealing method for skin butt joint gap - Google Patents

Abstract

The invention provides a sealing method of a skin butt joint gap, which comprises the following steps: wiping the skin butt joint gap by using an activating agent; after the first preset time, coating the base coat at the skin butt joint gap, airing the skin coated with the base coat for a second preset time, coating priming adhesive on the skin butt joint gap, and flattening the priming adhesive by using a glue scraping tool, wherein the priming adhesive is used for sealing the skin butt joint gap; and coating skin bonding glue on the skin at a preset distance from the center of the skin butt joint gap, and flattening the skin bonding glue so as to enable the end of the flattened skin bonding glue to be flush with the end of the skin. By applying the technical scheme of the invention, the bottoming adhesive has a sealing effect, the sealing and the water proofing of the gap can be realized, the end of the skin adhesive is flush with the end of the skin after the skin adhesive is flattened, the excessive skin adhesive can be prevented from overflowing from the gap, and the problems that the cleaning difficulty of the skin butt joint gap is high and the skin adhesive is wasted in the prior art are solved.

Description

Sealing method for skin butt joint gap

Technical Field

The invention relates to the technical field of vehicle skin manufacturing, in particular to a sealing method of a skin butt joint gap.

Background

At present, in the industry, the gap of the aluminum skin on the side of the automobile body is manufactured, in order to achieve the effect of no water seepage, a layer of wider sealant is generally covered at the gap for sealing, the operation difficulty is high, and the production efficiency is influenced. Meanwhile, the requirement on the skill and proficiency of constructors is extremely high, and if the constructors are not skilled, the gluing is often carried out with uneven pits or uneven glue seam lines and waves, so that the attractiveness of the whole vehicle is seriously influenced, water seepage at the seam can be caused, the corrosion of the framework is accelerated, and further the degumming of the skin and the influence on the service life of the framework of the vehicle body are caused.

Disclosure of Invention

The invention mainly aims to provide a sealing method of a skin butt joint gap, which aims to solve the problem of water seepage at the skin butt joint gap in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a method of sealing a skin butt seam, the method including: wiping the skin butt joint gap by using an activating agent; after the first preset time, coating the base coat at the skin butt joint gap, airing the skin coated with the base coat for a second preset time, coating priming adhesive on the skin butt joint gap, and flattening the priming adhesive by using a glue scraping tool, wherein the priming adhesive is used for sealing the skin butt joint gap; and coating skin bonding glue on the skin at a preset distance from the center of the skin butt joint gap, and flattening the skin bonding glue so as to enable the end of the flattened skin bonding glue to be flush with the end of the skin.

Further, the method for coating the priming adhesive further comprises the following steps: the coated priming adhesive has a width L1 and a first preset thickness H1, wherein L1 is more than or equal to 9.5mm and less than or equal to 10.5mm, and H1 is more than or equal to 9.5mm and less than or equal to 10.5 mm.

Further, the method further comprises: flattening the bottoming adhesive by using a glue scraping tool, wherein the width of the flattened bottoming adhesive is L2, and the thickness of the flattened bottoming adhesive is H2, wherein L2 is more than or equal to 29.5mm and less than or equal to 30.5mm, and H2 is more than or equal to 1.5mm and less than or equal to 2.5 mm.

Further, before coating the skin adhesive glue, the method further comprises the following steps: the rubber nozzle is cut at the preset height of the rubber nozzle along a first preset direction inclined preset angle to form a cutting opening of the rubber nozzle, wherein the first preset direction is the direction inclined upwards along the horizontal direction, the preset angle is A, and A is larger than or equal to 68.5 degrees and smaller than or equal to 69.5 degrees.

Further, before coating the skin adhesive glue, the method further comprises the following steps: and cutting a glue outlet with a preset shape from the highest point of the cutting opening to a second preset direction, wherein the second preset direction is a vertical downward direction, the preset shape is a V-shaped opening, the width of an upper opening of the V-shaped opening is L3, the depth of the V-shaped opening is H3, L3 is more than or equal to 8.5mm and less than or equal to 9.5mm, and H3 is more than or equal to 11.5mm and less than or equal to 12.5 mm.

Further, the method for coating the skin adhesive glue comprises the following steps: the edge of the cutting opening is bonded with the framework, the glue nozzle is dragged, and skin bonding glue is extruded from the glue outlet, wherein the cross section of the extruded skin bonding glue is triangular, the width of the skin bonding glue connected with the framework is L4, the height of the skin bonding glue is H4, L4 is larger than or equal to 9.5mm and smaller than or equal to 10.5mm, and H4 is larger than or equal to 13.5mm and smaller than or equal to 14.5 mm.

Further, the skin comprises a first skin and a second skin, and the method for pasting and flattening the skin on the skin bonding glue comprises the following steps: and after the first skin is bonded and horizontal correction is carried out, at least one limiting block is inserted into the skin butt joint gap, and the second skin is bonded, wherein the limiting block has a second preset thickness H5, and H5 is larger than or equal to 1.5mm and is smaller than or equal to 2.5 mm.

Further, before the first skin is bonded, the masking paper is bonded to the butt joint end of the first skin, wherein the butt joint end is the end, close to the skin butt joint gap, of the first skin.

Further, the first preset time is TI, the second preset time is T2, and the preset distance is L5, wherein T1 is more than or equal to 1min and less than or equal to 2min, T2 is more than or equal to 2min and less than or equal to 3min, and L5 is more than or equal to 14.5mm and less than or equal to 15.5 mm.

According to the technical scheme, the bottoming adhesive glue is coated on the skin butt joint gap, the bottoming adhesive glue has a sealing effect, the gap can be sealed and waterproof, the skin adhesive glue is coated at the preset distance, so that the end of the flattened skin adhesive glue is flush with the end of the skin, excessive skin adhesive glue can be prevented from overflowing from the gap, the problems that in the prior art, the skin butt joint gap is high in cleaning difficulty and the skin adhesive glue is wasted are solved, and even if other sealants are not used at the gap after the skin is bonded, the bottoming adhesive glue can have the sealing effect, and water seepage at the gap is effectively prevented.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic structural view of an embodiment of a skin butt seam according to the present invention;

FIG. 2 shows an enlarged schematic view at A in FIG. 1;

FIG. 3 shows a schematic view of a first embodiment of a skin butt seam after application of primer glue according to the present invention;

FIG. 4 shows a schematic view of a second embodiment of a skin butt seam after application of primer glue according to the present invention;

FIG. 5 is a schematic view of a first embodiment of a skin butt seam after flattening the primer glue according to the invention;

FIG. 6 is a schematic view of a second embodiment of a skin butt seam after flattening the primer glue according to the invention;

FIG. 7a shows a schematic view of a first embodiment of a cutting glue nozzle according to the invention;

FIG. 7b shows a schematic view of a second embodiment of a cutting glue nozzle according to the invention;

FIG. 8 shows a schematic view of an embodiment of a skin butt seam after application of skin glue according to the present invention;

FIG. 9 shows a schematic view of an embodiment of bonding a first skin according to the invention;

FIG. 10 shows a schematic view of a first embodiment of an insertion stop block after bonding a first skin in accordance with the present invention;

FIG. 11 is a schematic view of a second embodiment of an insertion stop block after bonding a first skin in accordance with the present invention;

figure 12 shows a schematic view of a first embodiment of bonding a second skin according to the invention;

figure 13 shows a schematic view of a second embodiment of bonding a second skin according to the invention.

Wherein the figures include the following reference numerals:

1. skin butt joint gaps; 2. priming adhesive glue; 3. skin bonding glue;

41. a first skin; 42. a second skin;

5. and a limiting block.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 13, according to an embodiment of the present application, a method for sealing a skin butt seam is provided.

The method comprises the following steps: wiping the skin butt joint gap 1 by using an activating agent; after the first preset time, coating the base coat on the skin butt joint gap 1, airing the skin coated with the base coat for a second preset time, coating priming adhesive 2 on the skin butt joint gap 1, and flattening the priming adhesive 2 by using a glue scraping tool, wherein the priming adhesive 2 is used for sealing the skin butt joint gap 1; coating skin bonding glue 3 on the skin at a preset distance from the center of the skin butt joint gap 1, and flattening the skin bonding glue 3 so as to enable the end of the flattened skin bonding glue 3 to be parallel to the end of the skin.

Use the technical scheme of this embodiment, scribble the bottoming adhesive on skin butt joint gap 1 earlier, the bottoming adhesive has sealed effect, can realize the sealed waterproof in gap, scribble skin adhesive 3 in preset distance department so that the end of flattening back skin adhesive 3 and the end parallel and level of skin, can avoid too much skin adhesive 3 to spill over from the gap, solve among the prior art problem that the high and skin adhesive 3 of the 1 clearance degree of difficulty of skin butt joint gap is extravagant, the skin bonds and accomplishes the back, even no longer use other sealed glues in gap department, bottoming adhesive 2 also can have sealed effect, effectively prevent gap department infiltration.

Wherein, the method for smearing the priming adhesive 2 further comprises the following steps: the coated priming bonding glue 2 has a width L1 and a first preset thickness H1, wherein L1 is more than or equal to 9.5mm and less than or equal to 10.5mm, and H1 is more than or equal to 9.5mm and less than or equal to 10.5 mm. As shown in fig. 3 and 4, in an embodiment of the present application, L1 is 10mm, H1 is 10mm, and when priming adhesive 2 of a certain width and thickness is smeared so that the subsequent flattening priming adhesive 2 is flattened, priming adhesive 2 can completely cover the skeleton to seal the gap, and when the usage is insufficient, the flattening adhesive 2 is flattened to weaken the sealing effect due to insufficient thickness, and when the usage is excessive, waste and subsequent inconvenience in cleaning are caused. The width and thickness of the applied priming adhesive 2 should be adjusted accordingly according to the size of the skin butt seam 1.

Further, the method further comprises: flattening the bottoming adhesive 2 by using a glue scraping tool, wherein the width of the flattened bottoming adhesive 2 is L2, and the thickness of the flattened bottoming adhesive 2 is H2, wherein L2 is more than or equal to 29.5mm and less than or equal to 30.5mm, and H2 is more than or equal to 1.5mm and less than or equal to 2.5 mm. As shown in fig. 5 and 6, in an embodiment of the present application, L2 is 30mm, H2 is 2mm, and the width and thickness range of the flattened priming adhesive 2 are limited, so that the priming adhesive 2 can completely seal the skin butt joint gap, the exposure of the skeleton at the gap is avoided, and the problems of skeleton oxidation and the like caused by water seepage and water seepage are prevented. It should be noted that the width and thickness range of the flattened backing adhesive 2 should correspond to the size of the skin butt joint gap to be sealed, and the width and thickness of the backing adhesive 2 are correspondingly adjusted according to the size of the skin butt joint gap.

Specifically, before the skin adhesive glue 3 is coated, the method further comprises the following steps: the rubber nozzle is cut at the preset height of the rubber nozzle along a first preset direction inclined preset angle to form a cutting opening of the rubber nozzle, wherein the first preset direction is the direction inclined upwards along the horizontal direction, the preset angle is A, and A is larger than or equal to 68.5 degrees and smaller than or equal to 69.5 degrees. In one embodiment of the present application, a is 69, as shown in fig. 7 a. According to actual needs, the numerical value of the preset angle can be correspondingly adjusted.

Further, before the skin adhesive glue 3 is coated, the method further comprises the following steps: and cutting a glue outlet with a preset shape from the highest point of the cutting opening to a second preset direction, wherein the second preset direction is a vertical downward direction, the preset shape is a V-shaped opening, the width of an upper opening of the V-shaped opening is L3, the depth of the V-shaped opening is H3, L3 is more than or equal to 8.5mm and less than or equal to 9.5mm, and H3 is more than or equal to 11.5mm and less than or equal to 12.5 mm. As shown in FIG. 7b, in one embodiment of the present application, L3 is 9mm and H3 is 12 mm. The depth and height of the V-shaped opening are defined so that the skin adhesive 3 extruded from the V-shaped opening has a certain width and height, and the skin adhesive 3 can spread to a designated position just when the skin adhesive 3 is flattened. In practical application, the shape of the glue outlet can be changed according to actual needs, such as a square opening, a round opening, an irregular opening, and the like.

The method for smearing the skin adhesive glue 3 comprises the following steps: the edge of the cutting opening is bonded with the framework, the glue nozzle is dragged, and the skin bonding glue 3 is extruded from the glue outlet, wherein the cross section of the extruded skin bonding glue 3 is triangular, the width of the skin bonding glue 3 connected with the framework is L4, the height of the skin bonding glue 3 is H4, L4 is larger than or equal to 9.5mm and smaller than or equal to 10.5mm, and H4 is larger than or equal to 13.5mm and smaller than or equal to 14.5 mm. As shown in FIG. 8, in one embodiment of the present application, L4 is 10mm and H4 is 14 mm. Skin bonding glue 3 extruded from the V-shaped port with the limited size has the width and the height within a certain range, so that when the skin bonding glue 3 is subsequently flattened and is bonded to the skin, the skin bonding glue 3 just spreads to the end position of the skin, the end of the skin is flush with the edge of the skin bonding glue 3, the phenomenon that the excessive skin bonding glue 3 overflows in the skin butt joint gap 1 is avoided, and the problems that the skin bonding glue 3 is wasted and the excessive skin bonding glue 3 is difficult to clean in the gap are solved.

Specifically, the skin comprises a first skin 41 and a second skin 42, and the method for attaching and flattening the skin to the skin bonding glue 3 comprises the following steps: after the first skin 41 is bonded and horizontal correction is carried out, at least one limiting block 5 is inserted into the skin butt joint gap 1, and the second skin 42 is bonded, wherein the limiting block 5 is provided with a second preset thickness H5, and H5 is larger than or equal to 1.5mm and is smaller than or equal to 2.5 mm. As shown in fig. 9 to 13, in an embodiment of the present application, two limit blocks 5 are inserted, the two limit blocks 5 are located at two ends of the skin butt seam 1, and the distance between the ends of the first skin 41 and the second skin 42 can be equal up and down by inserting the limit blocks 5, so as to avoid that the first skin 41 and the second skin 42 are bonded asymmetrically, the distance is not equal up and down, and the appearance is not affected, and preferably, the second preset thickness H5 is 2 mm. In practical application, according to actual needs, the second preset thickness of the used limiting blocks 5 can be adjusted to change the distance between the ends of the first skin 41 and the second skin 42, and meanwhile, in order to ensure symmetrical bonding of the first skin 41 and the second skin 42, the number of the inserted limiting blocks 5 can be adjusted.

Preferably, before the first skin 41 is bonded, a crepe paper is bonded to a butt joint end of the first skin 41, which is an end of the first skin 41 close to the skin butt joint gap 1. The masking paper has a decorative effect, and the butt joint end of the first skin 41 is convenient to distinguish, so that the subsequent bonding is more convenient, and the bonded paper is more attractive.

Preferably, the first preset time is TI, the second preset time is T2, and the preset distance is L5, wherein T1 is not less than 1min and not more than 2min, T2 is not less than 2min and not more than 3min, and L5 is not less than 14.5mm and not more than 15.5 mm. The setting of the first preset time and the second preset time can ensure that the activator is dried and the base coat is cured, and the influence on the bonding effect caused by the fact that the activator and the base coat are not dried is avoided. In one embodiment of the present application, L5 is 15mm, and applying skin adhesive 3 at a predetermined distance allows skin adhesive 3 to spread to a designated location when skin adhesive 3 is subsequently flattened. It should be noted that, as shown in fig. 8, after the skin adhesive 3 is applied at a predetermined distance, the edge of the skin is also applied with the skin adhesive 3, which facilitates the skin adhesion.

The method can be used for sealing the butt joint gap of the aluminum skins on the side of the passenger car, and the aluminum skins can be bonded by using the method in the embodiment, so that the gap can be sealed again by using the sealant, the size of the sealant needed to be used is small, the attractiveness is not affected, and even if the sealant is not used, the gap between the skins is left as an open gap, and the hidden danger of water seepage does not exist in the gap. The method has simple flow, can be completed by only one person, and can effectively improve the working efficiency.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A method of sealing a skin butt seam, the method comprising:

wiping the skin butt seam (1) by using an activating agent;

after the first preset time, coating the base coat at the skin butt joint gap (1), airing the skin coated with the base coat for a second preset time,

smearing priming adhesive (2) on the skin butt joint gap (1), and flattening the priming adhesive (2) by using a glue scraping tool, wherein the priming adhesive (2) is used for sealing the skin butt joint gap (1);

at the distance scribble skin bonding glue (3) on the skin at the preset distance department at skin butt joint gap (1) center, will skin bonding glue (3) flatten to make after flattening the end of skin bonding glue (3) with the end parallel and level of skin.

2. The sealing method according to claim 1, characterized in that the method of applying a primer glue (2) further comprises:

the coated priming bonding glue (2) has a width L1 and a first preset thickness H1, wherein L1 is more than or equal to 9.5mm and less than or equal to 10.5mm, and H1 is more than or equal to 9.5mm and less than or equal to 10.5 mm.

3. The method of sealing according to claim 2, further comprising:

the bottom-coating adhesive (2) is flattened by the glue scraping tool, the width of the flattened bottom-coating adhesive (2) is L2, the thickness of the flattened bottom-coating adhesive (2) is H2, L2 is not more than 29.5mm and not more than 30.5mm, and H2 is not more than 1.5mm and not more than 2.5 mm.

4. Sealing method according to claim 1, characterized in that before applying the skin adhesive glue (3), the method further comprises:

the rubber nozzle is cut at a preset height of the rubber nozzle by a preset angle along a first preset direction in an inclined mode to form a cutting opening of the rubber nozzle, wherein the first preset direction is the direction inclined upwards along the horizontal direction, the preset angle is A, and A is larger than or equal to 68.5 degrees and smaller than or equal to 69.5 degrees.

5. Sealing method according to claim 4, characterized in that before applying the skin adhesive glue (3), the method further comprises:

cutting a glue outlet with a preset shape from the highest point of the cutting opening to a second preset direction, wherein the second preset direction is a vertical downward direction, the preset shape is a V-shaped opening, the width of an upper opening of the V-shaped opening is L3, the depth of the V-shaped opening is H3, L3 is larger than or equal to 8.5mm and smaller than or equal to 9.5mm, and H3 is larger than or equal to 11.5mm and smaller than or equal to 12.5 mm.

6. Sealing method according to claim 5, characterized in that the method of applying the skin adhesive glue (3) comprises:

the mouth edge of cutting opening bonds with the skeleton, drags gluey mouth follows it extrudes to go out jiao kou covering bonding glue (3), wherein, extrude the transversal personally submitting triangle-shaped of covering bonding glue (3), covering bonding glue (3) with the width that the skeleton is connected is L4, and the height is H4, and wherein, 9.5mm is less than or equal to L4 and is less than or equal to 10.5mm, and 13.5mm is less than or equal to H4 and is less than or equal to 14.5 mm.

7. The sealing method according to claim 1, wherein the skins comprise a first skin (41) and a second skin (42), and the method of applying and flattening the skins to the skin adhesive glue (3) comprises:

after the first skin (41) is bonded and horizontal correction is carried out, at least one limiting block (5) is inserted into the skin butt joint gap (1) to bond the second skin (42), wherein the limiting block (5) is provided with a second preset thickness H5, and H5 is larger than or equal to 1.5mm and is smaller than or equal to 2.5 mm.

8. The sealing method according to claim 7, characterized in that before bonding the first skin (41), a crepe paper is bonded to a butt end of the first skin (41), which is an end of the first skin (41) close to the skin butt seam (1).

9. The sealing method according to claim 1, wherein the first predetermined time is TI, the second predetermined time is T2, and the predetermined distance is L5, wherein T1 is 1min and T2 is 2min, T2 is 2min and T2 is 3min, and L5 is 14.5mm and L5 is 15.5 mm.

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