Storage box pad

Abstract

The utility model discloses a storage box pad, which belongs to the technical field of storage box accessories and comprises a pad body, a glue reducing groove and ribs, the pad body and the ribs are made of flexible materials, the ribs protruding upwards are arranged on the top surface of the pad body, the glue reducing groove is arranged on the bottom surface of the pad body, and the glue reducing groove is positioned on a parting surface of the storage box pad and is aligned with the ribs in position. Meanwhile, in the injection molding process of the storage box cushion, residual bubbles in the positions of the ribs are suitable for being concentrated towards the positions of the glue reducing grooves. Due to the fact that trapped air is generated in the process that the mold cavity is filled by injection, when air in the mold cavity cannot be exhausted in time or effectively, filling of rubber materials is blocked, and then injection molding defects such as material shortage, scorching and air marks are generated, bubbles in molten rubber can be gathered into the rubber reducing groove in the product forming process by arranging the rubber reducing groove, and the product forming quality is improved. Therefore, the problem that in the product forming process, due to the air trapping phenomenon of the mold, the product quality is reduced is effectively solved.

Description

Technical Field

[0001] This utility model relates to the technical field of storage box accessories, specifically to storage box pads. Background Technology

[0002] Storage boxes are very common in daily life. They are mainly used to classify and store loose items. When placing storage boxes, padding is often placed at the bottom of the box to avoid scratching the surface.

[0003] Currently, storage box pads are mostly made of flexible materials and are integrally molded through injection molding. However, due to the structural characteristics of the mold, air trapping can easily occur at the end of the material flow in the deep ribs and at the parting surface during the injection molding process. This prevents the gas from being discharged smoothly from the mold cavity, especially at the connecting ribs. When the leading molten material flows in a fountain-like manner at the ribs, the large surface of the product is filled first, resulting in air trapping in the local ribs, which affects product quality.

[0004] Therefore, in order to solve the problem of trapped air, the applicant optimized the structure of the existing product by reducing the amount of adhesive applied to certain parts of the product and utilizing the fountain-like flow characteristics of the molten material to improve the surface quality of the product. Utility Model Content

[0005] Therefore, this utility model provides a storage box pad to solve the problem of product defects caused by air entrapment in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a storage box mat, which is integrally formed by injection molding. The storage box mat includes:

[0008] A pad, wherein the top surface of the pad is provided with ribs;

[0009] The pad and the ribs are made of flexible material. When the ribs are deformed by pressure, negative pressure is generated between two adjacent ribs to absorb the storage box.

[0010] A rubber-reducing groove is provided on the bottom surface of the pad and aligned with the position of the rib;

[0011] The adhesive reduction groove is located on the parting surface of the storage box pad. During the injection molding process of the storage box pad, residual air bubbles in the rib position are adapted to concentrate towards the position of the adhesive reduction groove.

[0012] Furthermore, the number of adhesive-reducing grooves is several, and they are distributed radially along the bottom surface of the pad.

[0013] Furthermore, the length of the adhesive reduction groove ranges from 8 mm to 11 mm, the width ranges from 0.5 mm to 1.5 mm, and the depth ranges from 1.1 mm to 1.5 mm.

[0014] Furthermore, the length direction of the adhesive reduction groove is consistent with the extension direction of the rib.

[0015] Furthermore, the ribs are annular, and at least one ring of the ribs is fitted on the top of the pad, with each rib corresponding to a glue-reducing groove.

[0016] Furthermore, the connection between the rib and the pad, as well as the inside of the adhesive reduction groove, are provided with rounded corners.

[0017] Furthermore, the storage box pad is made of a mixture of ethylene-butene copolymer and thermoplastic elastomer;

[0018] The pad is rectangular, circular, or rhomboid.

[0019] Furthermore, the outer edge of the pad is provided with an upward-curving flange, which is integrally formed with the pad.

[0020] Furthermore, the wall thickness of the pad is 2.1 mm, and the thickness of the flange ranges from 0.7 mm to 3.1 mm.

[0021] Furthermore, the flange is integrally connected to the tail of the handle, and the head of the handle is a free end.

[0022] Furthermore, several of the aforementioned ribs are concentrically arranged, and anti-slip textures are provided on the ribs, pads, and flanges.

[0023] Furthermore, the free end of the handle is provided with a loop.

[0024] This utility model has the following advantages:

[0025] This utility model discloses a storage box mat manufactured using a one-piece injection molding process. A venting groove is provided on the underside of the mat, with the bottom of the groove treated to reduce ductility. During the mat molding process, the characteristics of molten plastic flowing in the mold cause residual air bubbles in the molten material to concentrate in the venting groove, effectively solving the problem of air entrapment in the mold during injection molding. Compared to existing technologies that alleviate air entrapment by adding venting grooves, optimizing the gate, or controlling injection speed, mold temperature, and speed, this utility model's storage box mat can improve product quality without affecting production efficiency, thereby significantly improving product defects caused by air entrapment in the mold. Attached Figure Description

[0026] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0027] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0028] Figure 1 A perspective view of the storage box pad provided for this utility model;

[0029] Figure 2 A perspective view of the adhesive reduction groove structure provided by this utility model;

[0030] Figure 3 A perspective view of the pad body provided for this utility model;

[0031] Figure 4 A three-dimensional view of the ring buckle provided for this utility model;

[0032] Figure 5 This is a front view of the storage box pad provided by this utility model;

[0033] Figure 6 This is a cross-sectional view of the adhesive reduction groove provided by this utility model;

[0034] Figure 7 Process card for the storage box pad product provided by this utility model;

[0035] In the picture: 1. Pad; 2. Flanged edge; 3. Reduction groove; 4. Rib; 5. Handle; 6. Ring. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] Please refer to this as well. Figures 1-7 The storage box pad disclosed in this utility model is integrally molded using injection molding. It primarily solves the common problem of trapped air in injection-molded parts by incorporating a reducing groove 3 into the product structure and optimizing the thickness at different locations. This causes air bubbles in the injection mold to concentrate at the reducing groove 3. The technical solution disclosed in this utility model will be described below with specific embodiments.

[0038] In one specific embodiment disclosed in this utility model, such as Figure 1 and Figure 2 The storage box pad structurally includes a pad body 1, a shrinkage groove 3, and ribs 4. The pad body 1 is a sheet, and the top surface of the pad body 1 has upward-protruding ribs 4, which are continuous closed rings and integrally formed with the pad body 1. The shrinkage groove 3 is located on the bottom of the pad body 1 and is aligned with the position of the ribs 4. Since trapped air is generated during the injection process to fill the mold cavity, the inability of gas in the mold cavity to be discharged in a timely or effective manner can obstruct the filling of the rubber material, resulting in injection molding defects such as short material, burning, and air marks. The shrinkage groove 3 is located on the parting surface of the product. By setting the shrinkage groove 3, the tiny air bubbles in the molten rubber located at the position of the ribs 4 can be gathered into the shrinkage groove 3 during the product molding process, thereby effectively alleviating the problem of trapped air generated during the product molding process in the mold.

[0039] In this embodiment, the length direction of the adhesive reduction groove 3 is consistent with the extension direction of the rib 4, and an upward-curving flange 2 is provided at the outer edge of the pad 1. The flange 2 is integrally formed with the pad 1. By setting the flange 2, it can play a blocking role to a certain extent, so as to prevent leakage when the storage box leaks.

[0040] In this embodiment, as Figure 4 The flange 2 is integrally connected to the tail of the handle 5, and the head of the handle 5 is a free end. Furthermore, a ring 6 can be installed at the head of the handle 5 to connect the label.

[0041] In some embodiments, such as Figure 2 The pad 1 and the ribs 4 are made of flexible materials. Specifically, the pad 1, the flange 2, and the ribs 4 are made of a mixture of ethylene-butene copolymer and thermoplastic elastomer. Furthermore, fluorescent agents can be added to the product material to enhance surface brightness. When the ribs 4 are compressed, they deform, creating negative pressure between adjacent ribs 4. When the storage box is placed on the pad 1, this negative pressure adheres to the storage box and, to some extent, prevents the pad 1 from detaching from the storage box, thus providing better protection.

[0042] In this embodiment, as Figure 2 The shape of the pad 1 is not fixed and can be various shapes including rectangular or circular. The ribs 4 on the pad 1 are ring-shaped and several ribs 4 are arranged concentrically. At least one ring of ribs 4 is fitted on the top of the pad 1, and each rib 4 is provided with a corresponding rib reduction groove 3. This allows air bubbles remaining in the ribs 4 to be concentrated in the rib reduction groove 3 during the product molding process, thereby ensuring the molding quality and surface smoothness of the ribs 4.

[0043] In one specific embodiment of this utility model, anti-slip textures are provided on both the pad 1 and the flange 2 to improve the anti-slip performance of the pad 1 itself and prevent the storage box pad from sliding freely when placed.

[0044] In one specific embodiment disclosed in this utility model, such as Figure 5 and Figure 6 The connection between the rib 4 and the pad 1, as well as the inside of the adhesive reduction groove 3, are all provided with rounded corners. By providing rounded corners, stress concentration can be effectively avoided, thereby preventing cracking of the product at the connection of the structure. Preferably, the adhesive reduction groove is 10 mm long, 1 mm wide, and 1.3 mm deep. Based on this, the product size of the storage box pad is preferably 74 mm × 76 mm × 14 mm.

[0045] In a specific embodiment of this utility model, because the molten material at the leading edge exhibits a fountain-like flow with a large arc angle, the product surface is filled first during the confluence process at the ribs, resulting in air trapping at some ribs. Therefore, the product thickness is optimized through finite element simulation, wherein, for example... Figure 7 Under the corresponding process conditions, pressure is maintained for eight seconds at different pressure levels, as per reference. Figure 1 and Figure 4 This allows the product to achieve a relatively good surface quality. See details... Figure 5 The wall thickness of the pad 1 and the rib 4 is maintained between 0.7 mm and 3.1 mm. The thickness of the pad 1 is preferably 2.1 mm. After optimization, grooves are made in the confluence area of ​​the product and at the lower end of the rib 4, which is the position of the glue reduction groove 3. This can reduce the arc angle of the leading melt, making it easier for the molten material to fill the rounded corner of the rib, thereby significantly improving the air trapping phenomenon of the product.

[0046] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A storage box mat, integrally molded by injection molding, characterized in that, The storage box pad includes: A pad (1) having ribs (4) on its top surface; The pad (1) and the rib (4) are made of flexible material. When the rib (4) is deformed by pressure, a negative pressure is generated between two adjacent ribs (4) to absorb the storage box. The adhesive reduction groove (3) is provided on the bottom surface of the pad (1) and aligned with the position of the rib (4); The glue-reducing groove (3) is located on the parting surface of the storage box pad. At the same time, during the injection molding process of the storage box pad, the residual air bubbles in the rib (4) position are suitable to concentrate towards the position of the glue-reducing groove (3).

2. The storage box mat as described in claim 1, characterized in that, The number of adhesive reduction grooves (3) is several, and they are distributed radially along the bottom surface of the pad (1).

3. The storage box mat as described in claim 1, characterized in that, The rubber-reducing groove (3) has a length ranging from 8 mm to 11 mm, a width ranging from 0.5 mm to 1.5 mm, and a depth ranging from 1.1 mm to 1.5 mm.

4. The storage box mat as described in any one of claims 1 to 3, characterized in that, The length direction of the adhesive reduction groove (3) is consistent with the extension direction of the reinforcing bar (4).

5. The storage box mat as described in any one of claims 1 to 3, characterized in that, The rib (4) is ring-shaped, and at least one ring of the rib (4) is sleeved on the top of the pad (1), and each of the ribs (4) is provided with a corresponding adhesive reduction groove (3).

6. The storage box mat as described in any one of claims 1 to 3, characterized in that, The connection between the reinforcing bar (4) and the pad (1), as well as the groove (3) for reducing adhesive, are provided with rounded corners.

7. The storage box mat as described in claim 1, characterized in that, The storage box pad is made of a mixture of ethylene-butene copolymer and thermoplastic elastomer; The pad (1) is rectangular, circular, or rhomboid.

8. The storage box pad as described in claim 7, characterized in that, The outer edge of the pad (1) is provided with an upward-curving flange (2), which is integrally formed with the pad (1).

9. The storage box mat as described in claim 8, characterized in that, The wall thickness of the pad (1) is 2.1 mm, and the thickness of the flange (2) ranges from 0.7 mm to 3.1 mm.

10. The storage box mat as described in claim 8, characterized in that, The flange (2) is integrally connected to the tail of the handle (5), and the head end of the handle (5) is a free end.

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