Bag body air valve welding structure
By adopting a crisscrossing fusion structure between the air valve and the diaphragm, the weld volume and welding strength of the diaphragm and the mounting seat are enhanced, and the problem of insufficient welding and sealing performance in the vacuum seal bag is solved, and a stable and good sealing effect is achieved.
Patent Information
- Application Number
- CN202421975405.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The bag body gas valve welding structure of existing vacuum sealed bags is prone to problems of false welding and insufficient sealing performance, especially when the diaphragm and the mounting seat are junction, causing air leakage.
The first fusion part and the second fusion part are crisscrossed structures. The first fusion part is composed of a plurality of first convex parts and a first concave part, and the second fusion part is composed of a plurality of second convex parts and a second concave part to form a mesh structure to enhance the weld volume and welding strength of the diaphragm and the mounting base, and avoid dummy welding and breaking.
It improves the welding stability and sealing performance of the air valve and the bag body, ensures a good sealing effect between the air valve and the bag body, and avoids dummy welding and breaking.
Smart Images
Figure CN223058497U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a welding structure of a bag body air valve. Background Art
[0002] In general, an air valve for exhausting is welded on a diaphragm of a vacuum sealing bag. Specifically, an installation hole is formed in a diaphragm in advance, a part of the air valve passes through the installation hole, and the air valve is provided with an installation seat arranged around the outer periphery of the installation hole, and the part of the diaphragm located outside the installation hole is welded and fixed on the installation seat.
[0003] Among them, the diaphragm is made of a film material with a relatively thin thickness and a relatively high softness, the thickness of the installation seat is greater than that of the diaphragm, the installation seat is made of a hard plastic sheet, and the welding head presses the diaphragm against the installation seat to form a welding structure in which planes are in contact with each other. This welding structure is prone to problems such as virtual welding or insufficient welding strength, resulting in air leakage during the use of the vacuum sealing bag.
[0004] In addition, the part of the diaphragm located outside the installation hole can be flat against the entire surface of the installation seat. Since the installation seat is thicker and has a higher melting point than the diaphragm, when the welding head abuts against the joint of the contour edges of the diaphragm and the installation seat, it is easy to cause a break in the diaphragm, resulting in the failure of the sealing performance. Summary of the Utility Model
[0005] In order to overcome the deficiencies of the prior art, one of the purposes of the utility model is to provide a welding structure of a bag body air valve with stable structure and good sealing performance after welding.
[0006] A welding structure of a bag body air valve according to an embodiment of the utility model includes: a bag body composed of a diaphragm, the diaphragm is provided with an installation hole; an air valve passing through the installation hole, the air valve is provided with an installation seat connected to the diaphragm, and the installation seat corresponds to the diaphragm outside the outer periphery of the installation hole; a first fusion part formed by hot pressing the diaphragm located outside the installation hole on the installation seat, the first fusion part has a plurality of first convex parts and a plurality of first concave parts, and the plurality of first convex parts and the plurality of first concave parts are crisscrossed to form a first mesh structure.
[0007] The welding structure of the bag body air valve according to the embodiment of the utility model has at least the following
[0008] Advantages:
[0009] The above-mentioned welding structure of the air valve of the bag body forms a first fusion part by hot pressing between the mounting seat of the air valve and the diaphragm located on the outer periphery of the mounting hole. The first fusion part has a plurality of first convex parts and a plurality of first concave parts that are welded in a crisscross pattern. Compared with the traditional welding method of surface-to-surface contact, the first fusion part can increase the volume of fusion between the mounting seat and the diaphragm, avoid the situation of false welding of the air valve, and make the structure stable after welding the air valve and the bag body, with good sealing performance.
[0010] In some embodiments of the present invention, a second fusion part is further provided between the outer peripheral edge of the first fusion part and the outer peripheral edge of the mounting seat. The second fusion part has a plurality of second convex parts and a plurality of second concave parts, and the plurality of second convex parts and the plurality of second concave parts are crisscrossed to form a second mesh structure, and the mesh number of the second mesh structure is smaller than the mesh number of the first mesh structure.
[0011] In some embodiments of the present invention, the depth dimension of the second concave part is smaller than the depth dimension of the first concave part.
[0012] In some embodiments of the present invention, in the direction from the outer peripheral edge to the inner peripheral edge of the second fusion part, the depth dimension of the second concave part gradually increases to be consistent with the depth dimension of the first concave part.
[0013] In some embodiments of the present invention, the mounting hole is a circular through hole, and both the first fusion part and the mounting seat are circular rings and are concentrically arranged.
[0014] In some embodiments of the present invention, the mounting seat gradually bends towards the inside of the bag body along the path from the outer peripheral edge of the first fusion part to the outer peripheral edge of the mounting seat.
[0015] In some embodiments of the present invention, the depth dimension of the first concave part is 0.1 mm to 1.5 mm.
[0016] In some embodiments of the present invention, the first convex part is rectangular, and the side length of the first convex part is 0.2 mm to 3 mm.
[0017] In some embodiments of the present invention, there is a blank area between the outer peripheral edge of the first fusion part and the outer peripheral edge of the mounting seat, and the part of the diaphragm facing the blank area is separated from the blank area.
[0018] In some embodiments of the present invention, the blank area is annular, and the radial dimension of the blank area is 0.1 mm to 3 mm.
[0019] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings
[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0021] Figure 1 is a schematic structural diagram of Embodiment 1 of the bag body air valve welding structure of the present utility model;
[0022] Figure 2 is a schematic exploded view of Embodiment 1;
[0023] Figure 3 is a schematic structural diagram of Embodiment 2 of the bag body air valve welding structure of the present utility model;
[0024] Figure 4 is Figure 3 a schematic cross-sectional view taken along line A-A of the embodiment;
[0025] Figure 5 is Figure 3 a schematic cross-sectional view taken along line B-B of the embodiment.
[0026] Reference Numerals:
[0027] Diaphragm 100; Mounting Hole 110; Air Valve 200; Mounting Base 210; First Fusion Portion 300; First Convex Portion 310; First Concave Portion 320; Blank Area 400; Second Fusion Portion 500; Second Convex Portion 510; Second Concave Portion 520. Detailed Description of the Embodiment
[0028] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.
[0029] In the description of the present utility model, it should be understood that with regard to the orientation description, for example, terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, 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 should not be construed as limiting the present utility model.
[0030] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "joined" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0032] See Figures 1 to 3 , a bag body air valve welding structure of the present utility model includes: a bag body composed of a diaphragm 100, and an installation hole 110 is provided on the diaphragm 100; an air valve 200 is inserted through the installation hole 110, and the air valve 200 is provided with an installation seat 210 connected to the diaphragm 100, and the installation seat 210 corresponds to the diaphragm 100 on the outer periphery of the installation hole 110; a first fusion part 300 is formed by hot pressing the diaphragm 100 located on the outer periphery of the installation hole 110 onto the installation seat 210, and the first fusion part 300 has a plurality of first convex parts 310 and a plurality of first concave parts 320, and the plurality of first convex parts 310 and the plurality of first concave parts 320 intersect vertically and horizontally to form a first mesh structure. The above bag body air valve welding structure hot presses a first fusion part 300 between the installation seat 210 of the air valve 200 and the diaphragm 100 located on the outer periphery of the installation hole 110. The first fusion part 300 has a plurality of first convex parts 310 and a plurality of first concave parts 320 that are vertically and horizontally interlaced and welded together. Compared with the traditional welding method of surface-to-surface contact, the first fusion part 300 can increase the volume of the fusion between the installation seat 210 and the diaphragm 100, avoid the situation of false welding of the air valve 200, and make the structure stable and the sealing performance good after the air valve 200 and the bag body are welded.
[0033] It should be noted that generally, the part of the installation seat 210 corresponding to the diaphragm 100 on the outer periphery of the installation hole 110 can surround a circle on the outer periphery of the installation hole 110. Therefore, the first fusion part 300 formed by hot pressing the diaphragm 100 located on the outer periphery of the installation hole 110 onto the installation seat 210 is in a closed-loop shape, thereby ensuring that the first fusion part 300 can form a good sealing effect on the welding between the bag body and the air valve 200. See Figure 2 andFigure 3 , in some embodiments of the present utility model, the mounting hole 110 is a circular through-hole, and both the first fusion part 300 and the mounting seat 210 are circular rings and are concentrically arranged with the circular through-hole. The concentrically arranged circular-ring-shaped first fusion part 300 and mounting seat 210 contribute to forming a first fusion part 300 with a consistent radial dimension, that is, at any angular position of the air valve 200, the shortest sealing distance between the mounting seat 210 and the bag body is equal, avoiding the problem of insufficient sealing distance at a certain angular position between the air valve 200 and the bag body, and improving the sealing reliability. Of course, in other embodiments, the mounting hole 110 is not limited to a circular through-hole, and the first fusion part 300 and the mounting seat 210 are not limited to circular rings either. For example, the shapes of the first fusion part 300 and the mounting seat 210 can be elliptical rings, rectangular rings, or even other irregular figures, as long as the obtained first fusion part 300 can form a closed loop.
[0034] See Figure 3 and Figure 4 , in some embodiments of the present utility model, a second fusion part 500 is further provided between the outer peripheral edge of the first fusion part 300 and the outer peripheral edge of the mounting seat 210. The second fusion part 500 has a plurality of second convex parts 510 and a plurality of second concave parts 520, and the plurality of second convex parts 510 and the plurality of second concave parts 520 intersect vertically and horizontally to form a second mesh structure, and the mesh number of the second mesh structure is less than the mesh number of the first mesh structure. It can be understood that the second fusion part 500 is formed by hot-pressing the diaphragm 100 located between the outer peripheral edge of the first fusion part 300 and the outer peripheral edge of the mounting seat 210 onto the mounting seat 210. The second fusion part 500 has a plurality of second convex parts 510 and a plurality of second concave parts 520 that intersect vertically and horizontally and are formed by welding, which is beneficial to enhancing the welding strength between the outer peripheral edge of the mounting seat 210 and the corresponding diaphragm 100. Moreover, since the mesh number of the second mesh structure is less than the mesh number of the first mesh structure, that is, the second fusion part 500 is sparser than the first fusion part 300, when the welding head abuts against the joint of the contour edges of the diaphragm 100 and the mounting seat 210, it is not easy to cause a break in the diaphragm 100, ensuring the sealing performance.
[0035] See Figure 5, in some embodiments of the present utility model, the depth dimension of the second recess 520 is smaller than the depth dimension of the first recess 320. It can be understood that the portion of the diaphragm 100 located outside the installation hole 110 can be flatly attached to the entire surface of the mounting seat 210. The mounting seat 210 is thicker and has a higher melting point than the diaphragm 100. When the soldering head abuts against the joint of the contour edges of the diaphragm 100 and the mounting seat 210, it is easy to cause a break in the diaphragm 100. The depth dimension of the second recess 520 being smaller than the depth dimension of the first recess 320 can reduce the welding strength of the second fusion part 500, avoid the phenomenon of excessive melting and breakdown of the diaphragm 100 at the welding point, and ensure that the joint of the contour edges of the diaphragm 100 and the mounting seat 210 is not prone to breakage.
[0036] See Figure 4 and Figure 5 , in some embodiments of the present utility model, in the direction from the outer peripheral edge to the inner peripheral edge of the second fusion part 500, the depth dimension of the second recess 520 gradually increases to be consistent with the depth dimension of the first recess 320. When the second fusion part 500 is annular, that is, the depth dimension of the second recess 520 gradually increases along the radially inward direction of the second fusion part 500, a welding structure with a certain strength is formed between the outer peripheral edge of the mounting seat 210 and the corresponding diaphragm 100, solving the problem that the joint of the contour edges of the diaphragm 100 and the mounting seat 210 is prone to breakage. And along the radially inward direction of the second fusion part 500, the melting volume between the diaphragm 100 and the mounting seat 210 gradually increases, and the structural strength after welding also gradually increases, ensuring the sealing performance of the second fusion part 500.
[0037] See Figure 4 , in some embodiments of the present utility model, the mounting seat 210 gradually bends towards the inside of the bag body along the path from the outer peripheral edge of the first fusion part 300 to the outer peripheral edge of the mounting seat 210; when the above-mentioned bag body air valve welding structure is formed, the first fusion part 300 remains flat, and the second fusion part 500 slightly bends towards the inside of the bag body to form a shape similar to a truncated cone surface, and when the diaphragm 100 is pulled towards the inside of the bag body at the outer peripheral edge of the mounting seat 210, it is not easy to pierce or stretch the diaphragm 100.
[0038] In some embodiments of the present utility model, the depth dimension of the first recess 320 is 0.1 mm to 1.5 mm. Through experiments, when the depth dimension of the first recess 320 is 0.1 mm to 1.5 mm, it is applicable to diaphragms 100 with general thickness dimensions, and can also ensure the structural strength and sealing performance of the first fusion part 300.
[0039] In some embodiments of the present utility model, the first convex portion 310 is rectangular, and the side length of the first convex portion 310 is 0.2 mm to 3 mm. When the first convex portion 310 meets the above conditions, the grid formed by the cooperation of multiple first convex portions 310 and multiple first concave portions 320 has a uniform size, and the shapes of the formed first convex portions 310 and first concave portions 320 are stable. Of course, in other embodiments, the shapes of the first convex portion 310 and the first concave portion 320 can also be circular, hexagonal, rhombic, etc., and the corresponding dimensions can also be changed accordingly.
[0040] See Figure 1 , in some embodiments of the present utility model, there is a blank area 400 between the outer peripheral edge of the first fusion portion 300 and the outer peripheral edge of the mounting base 210, and the portion of the diaphragm 100 facing the blank area 400 is separated from the blank area 400. The setting of the blank area 400 can prevent the outer peripheral edge of the mounting base 210 from being welded to the diaphragm 100, thereby eliminating the problem of the diaphragm 100 having a break due to hot pressing on the outer peripheral edge of the mounting base 210.
[0041] In some embodiments of the present utility model, the blank area 400 is annular, and the radial dimension of the blank area 400 is 0.1 mm to 3 mm. It should be noted that the setting of the blank area 400 inevitably reduces the area of the weldable area between the mounting base 210 and the diaphragm 100. After testing, when the radial dimension of the blank area 400 is 0.1 mm to 3 mm, the influence of the blank area 400 on the welding strength and sealing performance is negligible.
[0042] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0043] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and purpose of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.
Claims
1. A welding structure of a bag body air valve, characterized in that, Comprising: A bag body composed of a diaphragm (100), and an installation hole (110) is formed on the diaphragm (100); An air valve (200) is inserted through the installation hole (110). The air valve (200) is provided with a mounting seat (210) connected to the diaphragm (100), and the mounting seat (210) corresponds to the diaphragm (100) on the outer periphery of the installation hole (110); A first fusion part (300) is formed by hot-pressing the diaphragm (100) located on the outer periphery of the installation hole (110) onto the mounting seat (210). The first fusion part (300) has a plurality of first convex parts (310) and a plurality of first concave parts (320), and the plurality of first convex parts (310) and the plurality of first concave parts (320) are crisscrossed to form a first mesh structure.
2. The welding structure of the bag body air valve according to claim 1, wherein: A second fusion part (500) is further provided between the outer peripheral edge of the first fusion part (300) and the outer peripheral edge of the mounting seat (210). The second fusion part (500) has a plurality of second convex parts (510) and a plurality of second concave parts (520), and the plurality of second convex parts (510) and the plurality of second concave parts (520) are crisscrossed to form a second mesh structure. The mesh number of the second mesh structure is smaller than that of the first mesh structure.
3. The welding structure of the bag body air valve according to claim 2, wherein: The depth dimension of the second concave part (520) is smaller than the depth dimension of the first concave part (320).
4. The welding structure of the bag body air valve according to claim 3, wherein: In the direction from the outer peripheral edge to the inner peripheral edge of the second fusion part (500), the depth dimension of the second concave part (520) gradually increases to be consistent with the depth dimension of the first concave part (320).
5. The welding structure of the bag body air valve according to claim 1, wherein: Both the first fusion part (300) and the mounting seat (210) are circular rings and are concentrically arranged.
6. The welding structure of the bag body air valve according to claim 1, wherein: The mounting seat (210) gradually bends towards the inside of the bag body along the path from the outer peripheral edge of the first fusion part (300) to the outer peripheral edge of the mounting seat (210).
7. The welding structure of the bag body air valve according to claim 1, wherein: The depth dimension of the first concave part (320) is 0.1 mm to 1.5 mm.
8. The welding structure of the bag body air valve according to claim 1, wherein: The first convex part (310) is rectangular, and the side length of the first convex part (310) is 0.2 mm to 3 mm.
9. The welding structure of the bag body air valve according to claim 1, wherein: There is a blank area (400) between the outer peripheral edge of the first fusion part (300) and the outer peripheral edge of the mounting base (210), and the part of the diaphragm (100) facing the blank area (400) is separated from the blank area (400).
10. A welding structure of a bag body air valve according to claim 9, characterized in that: The blank area (400) is annular, and the radial dimension of the blank area (400) is 0.1 mm to 3 mm.