An integral foam core EPP molding die

Abstract

This invention relates to an integral foam core EPP molding die, comprising a fixed mold with several grooves, a moving mold matching the fixed mold, and locating pins symmetrically arranged on both sides of the grooves and the moving mold. A steel wire skeleton for embedding within the foam is provided within the grooves, and clamping components for assisting in fixing the steel wire skeleton are provided at the edges of the grooves. The ends of the locating pins also have notches for supporting the steel wire skeleton. Compared with the prior art, this invention has multiple grooves on the fixed mold, enabling multiple foam core EPP molding operations to be performed simultaneously, thus increasing production capacity by at least 50%. Furthermore, the steel wire skeleton within the grooves is limited and fixed by multiple components such as the notches at the ends of the locating pins and the clips on the clamping components. In particular, the rigid locating pins at both ends of the fixed mold and the moving mold limit the steel wire skeleton, ensuring uniform stress on the steel wire skeleton and preventing deformation and bending.

Description

Technical Field

[0001] This invention relates to the field of molding die technology, and in particular to an integral foam core EPP molding die. Background Technology

[0002] EPP is an abbreviation for Expanded Polypropylene, a new type of foamed plastic. EPP is a polypropylene foam material, a high-performance, highly crystalline polymer / gas composite material. Its unique and superior properties have made it one of the fastest-growing environmentally friendly, pressure-resistant, cushioning, and heat-insulating materials. EPP is also an environmentally friendly material that can be recycled. Compared to EPS (Expanded Polystyrene), EPP has higher mechanical strength, greatly expanding the application scenarios of foamed plastics.

[0003] Due to the wide range of applications of EPP, foam core EPP molding dies have been developed. However, existing foam core EPP molding dies have the following drawbacks:

[0004] (1) Usually, it is one mold with four holes, and the production capacity is limited;

[0005] (2) Both sides of the steel wire skeleton on the mold are spring structures with different spring forces, resulting in uneven stress on the steel wires, causing them to deform and bend.

[0006] (3) The wire clamp on the mold is biased to one side, and the positioning point is too small;

[0007] (4) The steel wire on the mold has no fixed position, only one insertion point, which makes it easy to fall off the mold. Summary of the Invention

[0008] The purpose of this invention is to overcome the defects of the prior art and provide an integral foam core EPP molding die.

[0009] The objective of this invention can be achieved through the following technical solutions:

[0010] The technical solution of the present invention is to provide an integral foam core EPP molding die, including a fixed mold with several grooves, a moving mold matching the fixed mold, and positioning pins symmetrically arranged on both sides of the grooves and the moving mold. The grooves are provided with a steel wire skeleton for embedding in the foam, and the edges of the grooves are provided with clamping components for assisting in fixing the steel wire skeleton. The ends of the positioning pins are also provided with notches for supporting the steel wire skeleton.

[0011] In some specific embodiments, the wire skeleton is arranged along the inner wall near the groove.

[0012] In some specific embodiments, a support rod for fixing to the clamping component is provided in the recessed part of the groove edge.

[0013] In some specific embodiments, the clamping component includes a rod and a clip located at one end of the rod. The wire skeleton is embedded in the clip of the clamping component, and the clip is also fixed to the support rod so that the wire skeleton is located between the clip and the support rod.

[0014] In some specific embodiments, the opening cross-section of the clip is trapezoidal, the opening end of the clip is the short side of the trapezoid, and the wire skeleton is inserted into the clip from the opening end.

[0015] In some specific embodiments, the fixed mold is provided with a boss, and the moving mold is provided with a groove that matches the boss. When the boss and the groove are fitted together, the fixed mold and the moving mold are fixed together as one.

[0016] In some specific embodiments, a plurality of positioning pins are provided, which are symmetrically arranged on both sides of the groove and the mold transfer.

[0017] In some specific embodiments, the positioning pin is provided with a limiting plate with a diameter larger than that of the positioning pin. When the fixed mold and the moving mold are matched and fixed, the positioning pins on both sides of the fixed mold and the moving mold pass through the fixed mold and the moving mold respectively, so that the limiting plate on the positioning pin abuts against the fixed mold and the moving mold respectively, while the notch at the end of the positioning pin limits the wire skeleton, so that the fixed mold, the moving mold and the wire skeleton are compactly fixed.

[0018] In some specific embodiments, the depth of the notch at the end of the positioning pin is greater than the diameter of the wire skeleton.

[0019] In some specific embodiments, the number of grooves is not less than four.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The present invention has multiple grooves on the mold, which can perform multiple foam core EPP molding operations at the same time, thereby increasing the production capacity by at least 50%.

[0022] (2) The present invention achieves the limiting and fixing of the steel wire skeleton in the mold groove through multiple components such as the notch at the end of the positioning pin and the buckle on the clamping component. In particular, the rigid positioning pins at both ends of the fixed mold and the moving mold limit the steel wire skeleton, which also makes the steel wire skeleton bear the force evenly and avoids deformation and bending. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the integral foam core EPP molding mold of the present invention.

[0024] Figure 2This is a schematic diagram of the structure of the groove of the present invention.

[0025] Figure 3 This is a schematic diagram of the positioning pin of the present invention.

[0026] Figure 4 This is a schematic diagram of the clamping component of the present invention.

[0027] Figure 5 This is a schematic diagram of the layout of the steel wire skeleton in the groove of the present invention.

[0028] The diagram is labeled as follows:

[0029] 1 is the fixed mold, 2 is the moving mold, 3 is the groove, 4 is the positioning pin, 5 is the clamping component, 6 is the steel wire skeleton, and 7 is the support rod. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] In the following embodiments, unless otherwise specified, the functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0034] Example 1:

[0035] like Figure 1-5 As shown, this invention provides an integral foam core EPP molding die, comprising a fixed mold 1 with six symmetrically arranged grooves 3, a movable mold 2 matching the fixed mold 1, and positioning pins 4 symmetrically arranged on both sides of the grooves 3 and the movable mold 2. A steel wire skeleton 6 for embedding within the foam is provided within the grooves 3, and clamping components 5 for assisting in fixing the steel wire skeleton 6 are provided at the edges of the grooves 3. The ends of the positioning pins 4 also have notches for supporting the steel wire skeleton 6. This technical solution improves work efficiency by simultaneously completing the foam core EPP molding operation through multiple grooves, and improves the completion rate of the foam core EPP molding operation by limiting and fixing the steel wire skeleton 6 through the positioning pins 4 and clamping components 5.

[0036] In this embodiment, the wire skeleton 6 is arranged along the inner wall near the groove 3. This embodiment makes the wire skeleton 6 easy to fix, and also makes it easy to subsequently adjust the shape of the foam core EPP after it is formed, since the wire skeleton 6 is located at the edge of the foam core EPP.

[0037] In this embodiment, a support rod 7 for fixing to the clamping member 5 is provided in the recessed part of the edge of the groove 3. This embodiment provides a fixing member for the clamping member 5.

[0038] In this embodiment, the clamping component 5 includes a rod and a clip located at one end of the rod. The wire skeleton 6 is embedded in the clip of the clamping component 5, and the clip is also fixed to the support rod 7 so that the wire skeleton 6 is positioned between the clip and the support rod 7. This embodiment improves the fixing effect of the clamping component 5 in limiting the wire skeleton 6.

[0039] In this embodiment, the clamp's opening cross-section is trapezoidal, with the opening end of the clamp being the shorter side of the trapezoid. The wire skeleton 6 is engaged with the clamp from the opening end. This embodiment ensures that the clamping component 5 can secure the wire skeleton 6.

[0040] In this embodiment, the fixed mold 1 is provided with a boss, and the moving mold 2 is provided with a groove that matches the boss. When the boss and the groove are fitted together, the fixed mold 1 and the moving mold 2 are fixed together. This embodiment improves the original mold-fitting design by using a boss for positioning and mold fitting, making it more aesthetically pleasing and convenient.

[0041] In this embodiment, eight positioning pins 4 are provided, symmetrically arranged on both sides of the groove 3 and the mold transfer 2. This embodiment improves the strength of the fixed steel wire skeleton 2.

[0042] In this embodiment, a limiting plate with a diameter larger than that of the positioning pin 4 is provided on the positioning pin 4. When the fixed mold 1 and the moving mold 2 are matched and fixed, the positioning pins 4 on both sides of the fixed mold 1 and the moving mold 2 pass through the fixed mold 1 and the moving mold 2 respectively. At the same time, the limiting plate on the positioning pin 4 abuts against the fixed mold 1 and the moving mold 2 respectively, and the notch at the end of the positioning pin 4 limits the steel wire skeleton 6, so that the fixed mold 1, the moving mold 2 and the steel wire skeleton 6 are tightly fixed. This embodiment improves the positioning function of the positioning pin 4 and also strengthens the matching of the fixed mold 1 and the moving mold 2.

[0043] In this embodiment, the depth of the notch at the end of the positioning pin 4 is greater than the diameter of the wire skeleton 6. This embodiment ensures that the wire skeleton 6 can be fitted into the notch at the end of the positioning pin 4, thereby ensuring that the wire skeleton 6 is fixed.

[0044] The assembly process in this embodiment is as follows:

[0045] After the boss on the fixed mold 1 and the groove on the moving mold 2 are aligned and in place, the fixed mold 1 and the moving mold 2 are fixed. The positioning pins 4, symmetrically located on both sides of the fixed mold 1 and the moving mold 2, pass through the fixed mold 1 and the moving mold 2 respectively, so that the limiting plates on the positioning pins 4 abut against the fixed mold 1 and the moving mold 2 respectively. At the same time, the notch at the end of the positioning pin 4 limits the steel wire skeleton 6 in the groove 3, so that the position of the steel wire skeleton 6 in the groove 3 is fixed. The steel wire skeleton 6 near the support rod 7 at the edge of the groove 3 is fixed to the support rod 7 by the clamping part 5, which helps to fix the steel wire skeleton 6. Thus, the assembly of the integral foam core EPP molding mold is completed.

[0046] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A one-piece foam core EPP forming mold characterized by, The application relates to a fixed mold (1) provided with a plurality of type grooves (3), a moving mold (2) matched with the fixed mold (1), and positioning pins (4) symmetrically arranged on both sides of the type grooves (3) and the moving mold (2) respectively, a steel wire framework (6) for being embedded in foam is arranged in the type groove (3), a clamping part (5) for assisting in fixing the steel wire framework (6) is arranged on the edge of the type groove (3), and a notch for supporting the steel wire framework (6) is further arranged on the end of the positioning pin (4). A supporting rod (7) for being fixed with the clamping part (5) is arranged in the recess of the edge of the type groove (3). The clamping part (5) comprises a rod part and a clamping buckle arranged at one end of the rod part, the steel wire framework (6) is embedded in the clamping buckle of the clamping part (5), and the clamping buckle is further fixed with the supporting rod (7) so that the steel wire framework (6) is located between the clamping buckle and the supporting rod (7). A limiting plate with a diameter larger than that of the positioning pin (4) is arranged on the positioning pin (4), when the fixed mold (1) is matched and fixed with the moving mold (2), the positioning pins (4) on both sides of the fixed mold (1) and the moving mold (2) respectively pass through the fixed mold (1) and the moving mold (2), so that the limiting plate on the positioning pin (4) is abutted against the fixed mold (1) and the moving mold (2) respectively, meanwhile, the notch at the end of the positioning pin (4) limits the steel wire framework (6), so that the fixed mold (1), the moving mold (2) and the steel wire framework (6) are fixed compactly.

2. The one-piece foam core EPP forming mold of claim 1, wherein, The steel wire framework (6) is arranged along the inner wall close to the type groove (3).

3. The one-piece foam core EPP forming mold of claim 1, wherein, The opening section of the clamping buckle is trapezoidal, the opening end of the clamping buckle is the short side of the trapezoid, and the steel wire framework (6) is clamped into the clamping buckle from the opening end.

4. The one-piece foam core EPP forming mold of claim 1, wherein, A boss is arranged on the fixed mold (1), a recess matched with the boss is arranged on the moving mold (2), when the boss is inlaid with the recess, the fixed mold (1) and the moving mold (2) are combined and fixed.

5. The one-piece foam core EPP forming mold of claim 1, wherein, A plurality of positioning pins (4) are arranged symmetrically on both sides of the type groove (3) and the moving mold (2) respectively.

6. The one-piece foam core EPP forming mold of claim 1, wherein, The depth of the notch at the end of the positioning pin (4) is greater than the diameter of the steel wire framework (6).

7. The one-piece foam core EPP forming mold of claim 1, wherein, The number of the type grooves (3) is not less than four.

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