CN111038819A

CN111038819A - Packing box and welding method thereof

Info

Publication number: CN111038819A
Application number: CN201911340756.XA
Authority: CN
Inventors: 杨军合; 许明
Original assignee: Shaanxi Shizhuo Metal Products Co Ltd
Current assignee: Shaanxi Shizhuo Metal Products Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-04-21

Abstract

The embodiment of the disclosure relates to the technical field of packing cases, in particular to a packing case and a welding method thereof, for example, a glass substrate packing case suitable for a display panel and a welding method thereof. The welding method comprises the following steps: respectively welding the lower frame and the upper frame; the lower frame and the upper frame are connected in a welding mode through a plurality of connecting pieces; welding the bearing frame and the upper frame together; four support legs are welded on the upper frame. The packaging box welded by the method solves the problem of deformation of the packaging box during welding, ensures and meets the requirement of the packaging box on safe transportation of plate-shaped articles (such as glass substrates), and can convey the articles to a preset station to meet the requirement of the station in automatic production as the flatness of the packaging box meets the requirement.

Description

Packing box and welding method thereof

Technical Field

The embodiment of the disclosure relates to the technical field of packing cases, in particular to a packing case and a welding method thereof, for example, a glass substrate packing case suitable for a display panel and a welding method thereof.

Background

The glass substrate is a basic component constituting the liquid crystal display, and is one of the key basic materials of the flat panel display industry. In the field of glass substrates, american kangning, japanese asahi glass, banyan glass, etc. are still predominant in the world, and have a high rarefaction. With the hot-selling of various mobile terminal products, the demand for global glass substrates will increase greatly. The demand for the production of glass substrate packing cases is in sync, and the manufacturing technology of large-sized aluminum alloy glass substrate packing type is mainly from the U.S., korea and japan or the branch companies of these countries in mainland china and taiwan. The purchase of the aluminum alloy glass substrate packing box occupies a large amount of foreign exchange every year, so that the independent development of the large aluminum alloy glass substrate packing box is imperative.

The glass substrate is a thin glass sheet with an extremely flat surface, and the thickness of the glass sheet is 0.4mm, 0.5mm, 0.7mm and the like. The current glass substrate has been developed to the G10 generation, and safe, efficient, and low-cost transportation of large and thin glass substrates is a problem to be faced in the cost reduction of liquid crystal panel production. The aluminum alloy glass substrate packing box is a product produced by transportation.

The glass substrate loaded by the glass substrate packing box is large and thin, and the requirements on the manufacturing precision and consistency of the packing box are very strict due to the requirement of highly automatic production in the production process of the glass substrate. Requirements such as flatness and overall dimensions of the base of the package, flatness of the glass contact surface, and the location of the origin of the glass are in the order of millimeters, and these requirements are all guaranteed by the welding process.

The welding solutions commonly used in the prior art are as follows:

and (3) compacting on the platform by adopting a plurality of compacting points of 80: the compaction workload is large, time and labor are wasted, and the efficiency is low; adopting argon arc welding conventional current welding: the welding efficiency is low, the welding deformation shrinkage is large, and the irregular warping of the product exceeds the standard; shaping a welding part: the deformation overproof part is shaped, including mechanical shaping and heating shaping, so that the shaping workload is large, time and labor are wasted, the product quality is unstable, and the size consistency is poor.

Accordingly, there is a need to ameliorate one or more of the problems with the related art solutions described above.

It is noted that this section is intended to provide a background or context to the embodiments of the disclosure that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.

Disclosure of Invention

An object of the disclosed embodiments is to provide a packing box and a welding method thereof, thereby overcoming, at least to some extent, one or more of the problems due to the limitations and disadvantages of the related art.

According to a first aspect of embodiments of the present disclosure, there is provided a packaging box comprising: the lower frame comprises four lower frames which are sequentially connected into a rectangle and a lower central support frame in a grid shape, and the lower central support frame is positioned in the four lower frames;

the upper frame comprises four upper frames which are sequentially connected into a rectangle and a latticed upper central support frame, and the upper central support frame is positioned in the four upper frames;

the bearing frame comprises four bearing frames which are sequentially connected into a rectangle and a bearing central support frame in a grid shape, and the bearing central support frame is positioned in the four bearing frames; and

the four supporting legs are positioned at four corners of the upper surface of the upper frame, and each supporting leg is respectively welded with the upper frame;

the lower frame and the upper frame are connected through a plurality of connecting pieces in the vertical direction, and the upper frame and the bearing frame are welded.

In an embodiment of the present disclosure, the lower frame, the upper frame and the bearing frame are all aluminum pipes, and/or the thickness of the materials for the lower frame, the upper frame and the bearing frame is 3.0-6.0 mm.

According to a second aspect of the embodiments of the present disclosure, there is provided a welding method of a packing box, the method including:

respectively welding the lower frame and the upper frame;

the lower frame and the upper frame are connected in a welding mode through a plurality of connecting pieces;

welding the bearing frame and the upper frame together;

four support legs are welded on the upper frame.

In one embodiment of the present disclosure, when welding the lower frame or the upper frame, the fillet weld is first spot-welded, then the vertical weld is welded, and finally the flat weld is welded.

In one embodiment of the present disclosure, when the lower frame and the upper frame are welded and connected by the plurality of connecting members, the convex surface of the lower frame is upwardly placed on the platform, a part of the connecting members are spot-welded on the convex surface of the lower frame, then the upper frame, which is downwardly convex, is pressed against the connecting members of the lower frame, the contact portions of the connecting members and the upper frame are spot-welded, and then the remaining connecting members are spot-welded.

In one embodiment of the present disclosure, when spot welding the fillet weld, the middle portion of the fillet weld is welded first, and then the rest portion of the fillet weld is welded, and the surface of the butt joint of the fillet weld is flattened by a hammer.

In one embodiment of the disclosure, TIG welding is adopted during welding, the welding material is ER5356, the specification of the welding material is phi 3.2mm, and/or the welding current is over 240A, and the welding speed is 24-30 m/h.

In one embodiment of the present disclosure, the welding current is above 240A, and the welding speed is 24-30 m/h.

In an embodiment of the present disclosure, when four support legs are welded to the upper frame, the support legs are spot-welded first and then fillet-welded.

In an embodiment of the present disclosure, after the lower frame and the upper frame are welded and connected by the plurality of connecting members, a padding member is placed in the middle of the bottom surface of the lower frame, so that the center of the bottom surface of the lower frame is padded up by 1-4 mm.

In one embodiment of the disclosure, when the inner sides of the joints of the bearing frame and the upper frame are welded, the inner sides of the four corners of the joint of the upper frame and the bearing frame are all welded with welding seams with the length of 30-70mm, the four sides of the joint of the upper frame and the bearing frame are welded with welding seams with the length of 80-120mm, and the middle part of the joint of the upper frame and the bearing frame is welded with welding seams with the length of 30-70 mm.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

in the embodiment of the disclosure, the packaging box welded by the method solves the problem of deformation of the packaging box during welding, ensures and meets the requirement of safe transportation of the packaging box to plate-shaped articles (such as glass substrates), and can convey the articles to a preset station because the flatness of the packaging box meets the requirement, thereby meeting the requirement of the automatic production on the station.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 shows a schematic structural view of a packing case in an exemplary embodiment of the present disclosure;

fig. 2 illustrates a structural schematic view of a lower frame in an exemplary embodiment of the present disclosure;

FIG. 3 shows a schematic structural diagram of a load-bearing frame in an exemplary embodiment of the present disclosure;

fig. 4 shows a welding flow diagram of a package in an exemplary embodiment of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of embodiments of the disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

The packing box for glass substrates and the like can adopt 7 series aluminum alloy, the 7 series aluminum alloy belongs to high-strength aluminum alloy, the tensile strength of the packing box reaches 345MPa, and the density of the packing box is only 1/3 of steel, so that the weight of the packing box is greatly reduced, the bearing capacity of the packing box is not reduced, and the cost of the transportation link of the glass substrates is directly reduced.

Although the 7 series aluminum alloy has high strength, the welding difficulty is greatly increased compared with carbon steel and stainless steel, and the 7 series aluminum alloy is difficult to weld in aluminum alloy products due to the increase of the zinc content. The heat conductivity coefficient of the aluminum alloy is far greater than that of carbon steel and stainless steel, so that the aluminum alloy can absorb heat greatly during welding, the cooling shrinkage deformation after welding is increased, and warping is easy to generate. Pure aluminum is easy to oxidize in the air, the melting temperature of the aluminum oxide is 2054 ℃, slag is easy to be included in welding seams during welding, the strength of the welding seams is reduced, and therefore the problem needs to be solved if the aluminum alloy glass substrate packaging box meeting the requirements of an automatic substrate glass production line is made.

According to a first aspect of embodiments of the present disclosure, there is provided a packing box, as shown in fig. 1, which may include: a lower frame 100 (as shown in fig. 2), wherein the lower frame 100 includes four lower frames 101 connected in sequence in a rectangular shape and a lower central support frame 102 in a grid shape, and the lower central support frame 102 is located inside the four lower frames 101;

the upper frame 200 comprises four upper frames 201 which are sequentially connected into a rectangle and a latticed upper central support frame 202, wherein the upper central support frame 202 is positioned in the four upper frames 201;

the bearing frame 300 (shown in fig. 3) includes four bearing frames 301 connected in sequence to form a rectangle and a bearing central support frame 302 in a grid shape, wherein the bearing central support frame 302 is located in the four bearing frames 301; four support legs 400 positioned at four corners of the upper surface of the upper frame 200, each support leg 400 being welded to the upper frame 200;

wherein the lower frame 100 and the upper frame 200 are connected by a plurality of connectors 500 in a vertical direction, and the upper frame 200 and the carrier frame 300 are welded to each other.

Through the packing box that above-mentioned underframe, upper ledge, bearing frame and supporting leg are constituteed, bear dull and stereotyped class article (like glass substrate etc.), can well protect the article of splendid attire, reduce the damage, reduce the cost of transportation link.

Optionally, in some embodiments, the lower frame 100, the upper frame 200, and the bearing frame 300 may be all aluminum-based pipes, and/or the thickness of the material used for the lower frame 100, the upper frame 200, and the bearing frame 300 may be 3.0-6.0 mm, but is not limited thereto. The packing box made of aluminum pipes can reduce the dead weight of the box body, facilitate transportation and reduce transportation cost while ensuring the bearing capacity of the box body. The thickness of the used material or the used pipe can be 3.0-6.0 mm, but is not limited to the thickness, and 7-series aluminum alloy can also be used, so that the strength requirement of the packing box is met, the self weight of the packing box is further reduced, and the transportation cost can be further reduced.

According to a second aspect of the embodiments of the present disclosure, there is provided a welding method of a packing box, as shown in fig. 4, the method may include the steps of:

s100, respectively welding the lower frame 100 and the upper frame 200;

s200, welding the lower frame 100 and the upper frame 200 by a plurality of connectors 500;

s300, welding the bearing frame 300 and the upper frame 200 together;

s400, welding four support legs 400 on the upper frame 200.

The packaging box welded by the method solves the problem of deformation of the packaging box during welding, ensures and meets the requirement of the packaging box on safe transportation of plate-shaped articles (such as glass substrates), and can convey the articles to a preset station to meet the requirement of the station in automatic production as the flatness of the packaging box meets the requirement.

Optionally, in some embodiments, TIG welding may be used for welding, the welding material is ER5356, and the welding material specification is Φ 3.2mm, but is not limited thereto. TIG welding, i.e., non-consumable inert gas welding, forms a weld by melting metal with an arc between a tungsten electrode and a workpiece. The tungsten electrode is not melted in the welding process and only plays the role of the electrode. While argon is fed from the nozzle of the torch for shielding. Metals may be additionally added as required.

Alternatively, in some embodiments, when welding the lower frame 100 or the upper frame 200, the fillet weld may be spot-welded, the vertical weld may be welded, and the flat welds on both sides may be welded. The frame welded by the welding step has high flatness and is not easy to warp.

Furthermore, when the vertical welding seam is welded, the welding can be carried out in a symmetrical welding mode. For example, one surface of the lower frame 100 or the upper frame 200 may be welded first, and then the other surface of the lower frame 100 or the upper frame 200 may be welded.

Alternatively, in some embodiments, when the lower frame 100 and the upper frame 200 are welded and connected by a plurality of connectors 500, the convex surface of the lower frame 100 is placed upward on the platform, and part of the connectors 500 are spot-welded on the convex surface of the lower frame 100 (the connectors 500 may specifically be studs, but are not limited thereto), for example, one connector 500 may be spot-welded on each of two relatively narrow lower frames 101 in the lower frame 100, then the upper frame 200 with the convex surface facing downward is pressed on the connector 500 of the lower frame 100, and the contact between the connector 500 and the upper frame 200 is spot-welded, and then the rest of the connectors 500 are spot-welded.

In addition, when welding the lower frame 100 or the upper frame 200, each welding material is initially put in place, for example, two adjacent frames of the frame may be positioned on a T-shaped platform by using a tooling positioning block, and then the remaining two adjacent frames of the lower frame 100 or the upper frame 200 may be pressed by using a pressing block and then welded. The positioning method is also not limited thereto.

Optionally, in some embodiments, when spot welding the fillet weld, the middle portion of the fillet weld may be welded first, and then the rest portion of the fillet weld may be welded, and the surface of the joint of the fillet weld may be flattened by a hammer. The frame welded in this way does not need to adopt special shaping or correcting procedures, the manufactured packing box is not easy to warp, the packing requirement can be met, and the consistency of the product size and the qualification rate of the product are improved.

Optionally, in some embodiments, the welding current is 240A or more and the welding speed is 24-30 m/h. Generally, the TIG welding method has high welding quality, but has a slower welding speed compared with other arc welding methods, but the welding speed adopted in the embodiment is higher and is more than 2.5 times of the conventional welding speed, and meanwhile, the welding current is more than 2 times of the conventional welding current, but the welding effect meets the flatness requirement of the packaging box, and the manufacturing efficiency of the packaging box is improved.

Alternatively, in some embodiments, when four support legs 400 are welded to the upper frame 200, the support legs 400 are spot-welded and then the support legs 400 are fillet-welded. The fillet weld may be 40mm, but is not so limited.

In addition, as shown in fig. 1, the lower surface of the support leg 400 is welded to the upper rim 201 of the upper frame 200. The upper surfaces of the support legs 400 and the upper surface of the bearing frame 300 are flush, so that the surface flatness of the packing box is ensured. A gap is provided between the support leg 400 and the support frame 300, and if the gap can be 50mm, the gap is not limited thereto.

Alternatively, in some embodiments, after the lower frame 100 and the upper frame 200 are welded by the plurality of connecting members 500, before the bearing frame 300 is welded, the whole body in which the upper frame, the lower frame, and the connecting members are welded together may be referred to as a box base, a raising member is placed in a central portion of a bottom surface of the lower frame, so that a middle portion of the whole box base is raised by 1-4mm, then four corners of the box base are pressed by pressing members (which may be pressed on a platform, such as a T-shaped platform), and then the bearing frame is continuously welded. The raising member may be any supporting member, and the raising member may be the base of the box body raised 1-4mm, for example, 2mm, but is not limited thereto. After welding, the upper frame 200 or the lower frame 100 may slightly warp to one side, and when the upper frame 200 and the lower frame 100 are welded, the convex surfaces of the two are opposite to each other, and then the welding operation is performed. In the subsequent process of welding the bearing frame, the box base can be deformed in the direction opposite to the deformation direction of the box base, and the deformation of the box base can be offset with the deformation in the process of welding the bearing frame, so that the warping conditions of the upper frame 200 and the lower frame 100 can be simply and effectively changed, special and complex shaping or correcting tools are not needed, the production cost is reduced, and the manufacturing efficiency is improved. The plurality of connectors 500 are distributed over the tubes between the upper frame 200 and the lower frame 100, i.e., the corresponding side frames and the load-bearing frame.

Optionally, in some embodiments, when the inner side edges of the joints of the bearing frame and the upper frame are welded, the inner side edges of the four corners where the upper frame and the bearing frame are connected are welded with welding seams with a length of 30-70mm, for example, the welding seams may be 50 mm; welding seams with the length of 80-120mm, such as 100mm, at the four edges of the upper frame connected with the bearing frame; welding the middle part of the upper frame connected with the bearing frame is a welding seam with the length of 30-70mm, for example, a welding seam with the length of 50 mm. By adopting the welding line in the data range, the welding quality can be ensured, the deformation is reduced, and the welding efficiency and the yield of the packing box are improved.

It is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like in the foregoing description are used for indicating or indicating the orientation or positional relationship illustrated in the drawings, merely for the convenience of describing the disclosed embodiments and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be considered limiting of the disclosed embodiments.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present disclosure, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In the embodiments of the present disclosure, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A package, comprising:

the lower frame comprises four lower frames which are sequentially connected into a rectangle and a lower central support frame in a grid shape, and the lower central support frame is positioned in the four lower frames;

2. The package box according to claim 1, wherein the lower frame, the upper frame and the carrying frame are all aluminum type pipes, and/or the thickness of the material for the lower frame, the upper frame and the carrying frame is 3.0-6.0 mm.

3. A method for welding a packaging box, which is applied to the packaging box according to any one of claims 1 to 2, the method comprising:

respectively welding the lower frame and the upper frame;

welding the bearing frame and the upper frame together;

four support legs are welded on the upper frame.

4. A welding method of a packing box according to claim 3, wherein in welding the lower frame or the upper frame, the fillet is spot-welded, the vertical bead is welded, and the flat bead is welded.

5. A welding method of a packing case according to claim 3, wherein when the lower frame and the upper frame are welded to each other by a plurality of connecting members, the convex surface of the lower frame is upwardly placed on the table, a part of the connecting members are spot-welded on the convex surface of the lower frame, then the upper frame with the convex surface downwardly is pressed against the connecting members of the lower frame, the contact portions of the connecting members and the upper frame are spot-welded, and then the remaining connecting members are spot-welded.

6. A welding method for a packing case according to claim 4, wherein when the fillet weld is spot-welded, the middle portion of the fillet weld is welded, and then the rest portion of the fillet weld is welded, and the surface of the butt joint of the fillet weld is flattened by a hammer.

7. The welding method of the packing case according to claim 3, characterized in that TIG welding is adopted during welding, the welding material is ER5356, the specification of the welding material is phi 3.2mm, and/or the welding current is more than 240A, and the welding speed is 24-30 m/h.

8. A welding method of a packing box according to claim 3, wherein four support legs are welded to the upper frame by spot welding and then fillet welding.

9. The welding method of claim 3, wherein after the lower frame and the upper frame are welded and connected by the plurality of connecting members, the lower frame is raised by 1 to 4mm by placing a raising member at a central portion of a bottom surface of the lower frame.

10. The welding method of claim 3, wherein when the inner sides of the joints of the upper frame and the lower frame are welded, the inner sides of the four corners of the joints of the upper frame and the lower frame are welded with the welding lines having a length of 30-70mm, the four sides of the joints of the upper frame and the lower frame are welded with the welding lines having a length of 80-120mm, and the middle part of the joints of the upper frame and the lower frame is welded with the welding lines having a length of 30-70 mm.