A plate body structure and a container thereof

Abstract

This utility model relates to a plate structure and container. The plate structure includes an inner plate and an outer plate. The inner plate and the outer plate facing each other and / or the outer plate and the inner plate facing each other are provided with a plurality of welding ribs. The inner plate and the outer plate are welded together by the welding ribs, and the welding ribs, the inner plate and the outer plate form a plurality of closed cavities. The welding ribs are provided with ventilation grooves, which connect two adjacent cavities to reduce the degree of bulging of the plate surface at high temperatures.

Description

Technical Field

[0001] This utility model relates to the field of turnover container technology, specifically to a plate structure and its container. Background Technology

[0002] Collapsible containers are widely used in packaging across various industries, especially those with a double-sided glossy finish, which are particularly popular in the chemical, food, and oil industries due to their excellent hygiene and superior box strength. Most double-sided glossy collapsible containers consist of double-layered side panels and a base. In recent years, double-layered lids have also emerged. These double-layered components typically include inner and outer plastic parts. For the side panels and base, auxiliary components such as steel or aluminum tubes can be filled between the double layers for structural reinforcement. The inner and outer plastic parts are generally made of the same type of plastic, commonly PP or HDPE. The inner and outer panels are typically fused together using a hot-melt welding process, with common hot-plate welding and vibration friction welding being the main techniques.

[0003] After welding, the side panels, bases, or lids will have many cavities formed by interlaced welding ribs and inner and outer walls. The air inside these cavities is generally sealed. In high-temperature environments, such as after exposure to the summer sun, the air inside these cavities will experience significant thermal expansion. Meanwhile, the strength of the plastic on the outer walls will decrease considerably at high temperatures. This will cause a bulge in the center of each cavity on the outer side of the side panel. The degree of bulging is related to the wall thickness and the size of the cavity. Vibration friction welding, in particular, due to its one-time fusion welding characteristic, causes the air inside the cavities to naturally compress, resulting in more pronounced surface bulging in side panels or bases welded under high-temperature conditions compared to those at room temperature.

[0004] In addition, the welding strength of plastic parts is a key factor in the overall strength and reliability of the container. Non-destructive testing methods such as ultrasonic testing and X-ray testing used in metal welding are no longer applicable to plastic parts. Therefore, most tests are currently conducted by cutting and sampling, which is a destructive testing method. The side plates or bases after testing cannot be used. Therefore, a testing method that causes minimal damage to plastic welded parts and does not scrap them is also very valuable. Utility Model Content

[0005] The purpose of this invention is to provide a plate structure that can reduce the degree of bulging on the surface of the plate at high temperatures.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A plate structure includes an inner plate and an outer plate. A plurality of welding ribs are provided on the surfaces of the inner plate and the outer plate facing each other and / or on the surfaces of the outer plate and the inner plate facing each other. The inner plate and the outer plate are welded together by the welding ribs, and the welding ribs, the inner plate and the outer plate form a plurality of closed cavities.

[0008] The welded rib is provided with a venting groove, which connects two adjacent cavities.

[0009] In one embodiment, the welding ribs are provided only on the surfaces of the outer plate and the inner plate facing each other.

[0010] In one embodiment, the thickness of the inner plate is the wall thickness of the inner plate.

[0011] In one embodiment, the inner plate and the outer plate are connected as a whole by vibration friction welding, and the ventilation groove is disposed on the welding rib parallel to the direction of welding vibration.

[0012] In one embodiment, the outermost weld rib is provided with an venting groove.

[0013] In one embodiment, after the inner plate and the outer plate are connected as a whole, the venting groove is closed by the inner plate.

[0014] In one embodiment, after the inner plate and the outer plate are connected as a whole, the cavity communicates with the outside of the plate structure through the exhaust groove.

[0015] In one embodiment, the opposing walls of the inner and outer panels are both smooth surfaces.

[0016] In one embodiment, the plate structure further includes a reinforcing member located between the inner plate and the outer plate.

[0017] This utility model also provides a container, including a base and a plurality of side plates connected to the base, wherein the base and / or the side plates are any of the plate structures described above.

[0018] This utility model also provides a container, including a container body and a cover, wherein the cover is any of the plate structures described above.

[0019] The present invention adopts the above-mentioned technical solution and has the following beneficial effect: the plate structure provided by the present invention reduces or balances the internal air pressure of the welded plate by setting ventilation grooves on the welding ribs, thereby reducing the problem of bulging on the plate surface.

[0020] In addition, the plate structure provided by this utility model can also have small-diameter holes opened on the plate, and the welding strength and airtightness of the plate can be tested by the airtight method, which causes minimal damage to the plate and will not cause the plate to be scrapped. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the container.

[0022] Figure 2 This is a schematic diagram of the side panel.

[0023] Figure 3 This is an exploded view of the side panel.

[0024] Figure 4 This is a schematic diagram of the outer panel.

[0025] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0026] Figure 6 yes Figure 4 Enlarged view of point B in the middle.

[0027] Figure 7 This is a schematic diagram showing the distribution of weld reinforcement bars inside the side plate.

[0028] Figure 8 This is a schematic diagram after a portion of the side panel has been removed. Detailed Implementation

[0029] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0030] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0031] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0032] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0033] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0034] In the following description, in order to clearly demonstrate the structure and working method of this utility model, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0035] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] like Figure 1 As shown, this utility model provides a container, which includes a base 1 and a plurality of side plates 2 connected to the base 1. The plurality of side plates 2 enclose a cavity for loading goods. Optionally, the container may also include a lid 3, which can close the opening of the cavity to achieve closure of the cavity. Preferably, the side plates 2 are hinged to the base 1 in a manner that allows them to be folded relative to the base 1.

[0038] See Figures 2-8In this embodiment, the side panel 2 is composed of an inner panel 21 and an outer panel 22, wherein the inner panel 21 and the outer panel 22 are plastic parts, such as PP, HDPE, etc. Multiple welding ribs 23 are provided on the facing surfaces of the inner sidewall 21 and / or the outer panel 22. The inner panel 21 and the outer panel 22 are fused together by a hot-melt welding process, such as hot plate welding or vibration friction welding, to weld the inner panel 21 and the outer panel 22 into a whole. Simultaneously, these welding ribs 23 and the inner walls of the inner panel 21 and the outer panel 22 form multiple closed cavities 24. In this embodiment, the outer panel 22 is a thick plate, and all the welding ribs 23 are provided on the outer panel 22. The inner panel 21 is a thin plate, approximately only one wall thickness, along with some connecting structures, thus optimizing the weight of the entire side panel.

[0039] Preferably, the inner panel 21 and the outer panel 22 are opposite to each other and have a smooth surface without reinforcing ribs. Compared with the existing side panel structure with reinforcing ribs on the outer wall, the side panel in this embodiment adopts a double smooth surface structure, which can avoid or reduce the accumulation of dust and other particles, making it easier to keep clean and easier to clean.

[0040] The welding ribs 23 on the outer plate 22 are arranged horizontally and vertically. A number of ventilation grooves 231 are provided on each welding rib 23, allowing the cavities 24 formed by these horizontally and vertically arranged welding ribs 23 to communicate and balance the air pressure within these cavities 24. Preferably, because vibration friction welding requires a certain rigidity from the welding ribs, the ventilation grooves 231 are provided on the welding ribs 23 parallel to the direction of welding vibration, i.e., on the horizontal welding ribs. Several reinforcing ribs 233 are provided on the vertical welding ribs to enhance their strength. Alternatively, an exhaust groove 232 is provided on the outermost welding rib 23, allowing the air in the internal cavity of the side plate to communicate with the outside air during or after welding, thereby reducing or balancing the air pressure in the internal cavity of the side plate.

[0041] There are two designs for the exhaust groove 232. One design allows the exhaust groove 232 to close with the inner plate 21 after the outermost welding rib 23 is welded, ensuring that the air pressure inside the side plate cavity is roughly the same as the ambient air pressure, but the air cannot communicate, achieving a tight seal and waterproofing. The other design leaves a gap of approximately 2*0.3mm after the side plate is welded, providing a channel for air to communicate with the outside air, achieving a relative balance of air pressure between the inner and outer sides of the side plate. The latter design improves the bulging effect of the side plate surface under high temperatures more than the former, but the small gap may allow a small amount of water vapor to enter during high-pressure steam cleaning, making it unsuitable for environments with high hygiene and cleanliness requirements.

[0042] In this embodiment, the internal cavities of these interconnected side plates can also be used to check welding strength and airtightness. A small hole is made in the flat surface of the side plate, and combined with an airtightness testing fixture, the airtightness and welding strength of the side plate can be tested. The air pressure during airtightness testing generally should not exceed 40 kPa, and the welding strength test should not exceed 200 kPa.

[0043] See also Figure 3 and Figure 4 A reinforcing member 4 is also provided between the inner plate 21 and the outer plate 22. The outer plate 22 is provided with a reinforcing member mounting groove 221. In this embodiment, the reinforcing member mounting groove 221 includes two transverse grooves located at the upper and lower ends of the outer plate 22 and extending along the length of the outer plate, and a vertical groove located in the middle of the outer plate 22 and extending along the width of the outer plate. The two transverse grooves and the vertical groove form an I-shaped structure. The reinforcing member mounting groove 221 can be filled with reinforcing members 4 such as steel pipes and aluminum pipes for structural reinforcement.

[0044] Furthermore, although this embodiment uses a side panel as an example for illustration, the corresponding structure described above can also be provided on the lid or base, and is not limited to the side panel.

[0045] The preferred embodiments of this utility model have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to this utility model. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A plate structure, characterized by, The plate structure includes an inner plate and an outer plate. The inner plate and the outer plate facing each other and / or the outer plate and the inner plate facing each other are provided with a number of welding ribs. The inner plate and the outer plate are welded together by the welding ribs, and the welding ribs, the inner plate and the outer plate form a number of closed cavities. The welded rib is provided with a venting groove, which connects two adjacent cavities.

2. The panel structure of claim 1, wherein The welding ribs are provided only on the surfaces of the outer plate and the inner plate facing each other.

3. The panel structure according to claim 1 or 2, wherein The thickness of the inner plate is the wall thickness of the inner plate.

4. The panel structure of claim 1, wherein The inner plate and the outer plate are connected as a whole by vibration friction welding, and the ventilation groove is provided on the welding rib parallel to the direction of welding vibration.

5. The panel structure of claim 1, wherein The outermost weld rib is provided with an air vent.

6. The plate structure as described in claim 5, characterized in that, After the inner plate and the outer plate are connected as a whole, the exhaust groove is closed by the inner plate.

7. The plate structure as described in claim 5, characterized in that, After the inner plate and the outer plate are connected as a whole, the cavity communicates with the outside of the plate structure through the exhaust groove.

8. The plate structure as described in claim 1, characterized in that, The inner and outer panels have smooth surfaces on their opposing walls.

9. The plate structure as described in claim 1, characterized in that, The plate structure also includes a reinforcing member located between the inner plate and the outer plate.

10. A container comprising a base and a plurality of side plates connected to the base, characterized in that, The base and / or the side plate are plate structures as described in any one of claims 1-9.

11. A container, comprising a container body and a lid, characterized in that, The cover is a plate structure as described in any one of claims 1-9.

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