A foaming mold structure

Abstract

The present invention relates to a foaming mold structure, comprising an upper mold and a lower mold matched with the upper mold, the lower mold is provided with a mold cavity for product molding, the lower surface of the upper mold is provided with an upper mold parting surface, the upper surface of the lower mold is provided with a lower mold parting surface, the connection between the lower mold parting surface and the mold cavity is an inclined surface with a guiding function, and the inclined surface is inclined from high to low from the periphery to the center. This structural setting is conducive to the liquid foaming part raw material not being easy to overflow through the gap between the upper and lower mold cavity parting surfaces during the heating molding process of the aluminum mold. The liquid foaming part raw material has a tendency to flow into the mold cavity instead of overflowing, which easily causes a large number of burrs on the product.

Description

Technical Field

[0001] The invention relates to a foaming mold, in particular to a foaming mold structure. Background Art

[0002] At present, foaming molds can be divided into two categories according to the material of the foamed products: hard foaming and soft foaming. Both types of molds require specific cavities to complete the molding of the products. This type of mold molding requires the characteristics of sudden cooling and heating, so the requirements for the mold cavity material are relatively high. Usually, aviation-grade aluminum is used for processing. This type of aluminum has better performance in sudden cooling and heating, and can well meet the production of foamed parts cavities.

[0003] The aluminum foam part mold will produce wear on the cavity parting surface during its use cycle. The parting surface will cause uneven gaps when the upper and lower molds are closed. The raw materials of the foam parts are liquid, and have good fluidity during the heating and molding process of the aluminum mold. The raw materials will overflow through the wear gaps on the upper and lower cavity parting surfaces, causing a large amount of burrs on the product, resulting in a lower product qualification rate. The process of workers removing burrs is cumbersome. During maintenance, the parting surface of the mold cavity must be welded with aluminum and then processed using CNC machine tools. The maintenance time is long, and mass production molds need to be maintained frequently. Summary of the invention

[0004] In view of the above defects, the present invention proposes a foaming mold structure to solve the above technical problems.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A foaming mold structure comprises an upper mold and a lower mold matched with the upper mold, the lower mold is provided with a mold cavity for product molding, the lower surface of the upper mold is provided with an upper mold parting surface, the upper surface of the lower mold is provided with a lower mold parting surface, the connection between the lower mold parting surface and the mold cavity is an inclined surface with a guiding function, and the inclined surface is inclined from high to low from the periphery to the center. This structural setting is conducive to the liquid raw material of the foamed part not easily overflowing through the gap between the upper and lower mold cavity parting surfaces during the heating molding process of the aluminum mold. The liquid raw material of the foamed part has a tendency to flow into the mold cavity instead of overflowing, which easily causes a large number of burrs on the product.

[0007] Furthermore, the angle of inclination of the inclined surface relative to the horizontal plane is 15-30°, which is relatively appropriate. If the angle is too large, it will increase the difficulty of closing the upper and lower molds, and gaps will easily exist, increasing the difficulty of manufacturing; if the angle is too small, it will be unfavorable for liquid flow.

[0008] Furthermore, the lower mold parting surface includes a high-side lower mold horizontal surface and a low-side lower mold horizontal surface, and the inclined surface includes a high-side lower mold inclined surface and a low-side lower mold inclined surface; the height of the high-side lower mold inclined surface is lower than the high-side lower mold horizontal surface; the height of the low-side lower mold inclined surface is lower than the low-side lower mold horizontal surface; a first arc-shaped connecting surface is provided between the high-side lower mold inclined surface and the high-side lower mold horizontal surface, and between the low-side lower mold inclined surface and the low-side lower mold horizontal surface.

[0009] Furthermore, a first arc-shaped transition section is provided between the upper part of the first arc-shaped connecting surface and the horizontal surface of the high side lower mold or the horizontal surface of the low side lower mold, and a second arc-shaped transition section is provided between the lower part of the first arc-shaped connecting surface and the inclined surface of the high side lower mold or the inclined surface of the low side lower mold.

[0010] Furthermore, the bottom of the mold cavity is arranged obliquely, the side wall of the mold cavity is arranged vertically, and the angle between the inclined surface and the side wall of the mold cavity is an obtuse angle.

[0011] Furthermore, the upper mold parting surface includes a high-side upper mold horizontal surface, a low-side upper mold horizontal surface and a middle protrusion inclined surface, and a second arc-shaped connecting surface is provided between the high-side upper mold horizontal surface, the low-side upper mold horizontal surface and the protrusion inclined surface, and the two ends of the protrusion inclined surface are respectively provided with inclination angles matching the inclined surface, and when the upper mold and the lower mold are closed, the protrusion inclined surface covers the upper part of the mold cavity, and the two ends of the protrusion inclined surface are in contact with the inclined surface.

[0012] Furthermore, a third arc-shaped transition section is provided between the horizontal surface of the high-side upper mold, the horizontal surface of the low-side upper mold and the second arc-shaped connecting surface.

[0013] Furthermore, the horizontal plane of the high-side upper mold matches the horizontal plane of the high-side lower mold; the horizontal plane of the low-side upper mold matches the horizontal plane of the low-side lower mold; when the upper mold and the lower mold are closed, there are gaps between the horizontal plane of the high-side upper mold and the horizontal plane of the high-side lower mold, the horizontal plane of the low-side upper mold and the horizontal plane of the low-side lower mold, and the first arc-shaped connecting surface and the second arc-shaped connecting surface, which is conducive to the sudden cooling and heating process.

[0014] Furthermore, the foaming mold structure is made of aluminum.

[0015] The present invention sets the parting surface of the foaming mold structure as an inclined surface with a guiding function, and the inclined surface is inclined from high to low from the periphery to the center. This structural setting is conducive to the liquid foaming part raw material in the aluminum mold heating molding process. The liquid foaming part raw material has a tendency to flow into the mold cavity and is not easy to overflow through the gap, which easily causes a large number of burrs on the product. The specific advantages are:

[0016] (1) The inclined surface has a certain guiding function, so the liquid raw material does not overflow and burrs are avoided;

[0017] (2) Reduce the use of auxiliary equipment for molds, reduce the impact of errors on the precision of molds, increase the repetitive errors of the upper and lower mold parting lines, and improve the qualified rate of mold production products;

[0018] (3) Both the upper mold parting surface and the lower mold parting surface are provided with arc surfaces and multiple arc transition sections, which makes the upper and lower mold closing process more flexible, effectively improves the service life of the mold, and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the mold opening structure of an existing foaming mold;

[0020] Figure 2 It is a schematic diagram of the existing foaming mold clamping structure;

[0021] Figure 3 This is a schematic diagram of the mold opening structure of the foaming mold of the present invention;

[0022] Figure 4 It is a schematic diagram of the mold closing structure of the foaming mold of the present invention. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example

[0025] Figure 1 , 2 The present invention is a schematic diagram of the mold opening structure of an existing foaming mold. The existing foaming mold structure will cause wear of the cavity parting surface during its use cycle, and the parting surface will cause uneven gaps when the upper and lower molds are closed. Since the raw materials of the foamed parts are liquid, they have good fluidity during the heating and molding process of the aluminum mold. The raw materials will overflow through the gaps caused by the wear of the upper and lower cavity parting surfaces, resulting in a large amount of burrs on the products, which reduces the product qualification rate. In addition, the process of removing burrs by workers is cumbersome. During maintenance, the parting surface of the mold cavity must be welded with aluminum and then processed using a CNC machine tool. The maintenance time is long, and mass production molds need to be frequently maintained, which is costly.

[0026] To solve this problem, Figure 3 , 4The present invention provides a foaming mold structure, which is made of aluminum material, including an upper mold 100 and a lower mold 200 matched with the upper mold 100, and the lower mold 200 is provided with a mold cavity 400 for molding a product 300, characterized in that an upper mold parting surface is provided on the lower surface of the upper mold 100, and a lower mold parting surface is provided on the upper surface of the lower mold 200, and the connection between the lower mold parting surface and the mold cavity 400 is an inclined surface 203 with a guiding function, and the inclined surface 203 is inclined from high to low from the periphery to the center, and the angle of inclination of the inclined surface 203 relative to the horizontal plane is 15°. The present invention sets the parting surface of the foaming mold structure as an inclined surface with a guiding function, and the inclined surface 203 is inclined from high to low from the periphery to the center. This structural setting is conducive to the liquid foaming parts raw material in the aluminum mold heating molding process. The liquid foaming parts raw material has a tendency to flow to the mold cavity and is not easy to overflow through the gap, which easily causes a large number of burrs on the product.

[0027] Specifically, the lower mold parting surface includes a high-side lower mold horizontal surface 202 and a low-side lower mold horizontal surface 201, and the inclined surface 203 includes a high-side lower mold inclined surface and a low-side lower mold inclined surface; the height of the high-side lower mold inclined surface is lower than the high-side lower mold horizontal surface 202; the height of the low-side lower mold inclined surface is lower than the low-side lower mold horizontal surface 201; a first arc-shaped connecting surface 204 is provided between the high-side lower mold inclined surface and the high-side lower mold horizontal surface 202, and between the low-side lower mold inclined surface and the low-side lower mold horizontal surface 201. A first arc-shaped transition section is provided between the upper part of the first arc-shaped connecting surface 204 and the high-side lower mold horizontal surface 202 or the low-side lower mold horizontal surface 201, and a second arc-shaped transition section is provided between the lower part of the first arc-shaped connecting surface 204 and the high-side lower mold inclined surface or the low-side lower mold inclined surface.

[0028] The bottom of the mold cavity 400 is inclined, and the side wall of the mold cavity 400 is vertically arranged. The angle between the inclined surface and the side wall of the mold cavity 400 is an obtuse angle. The upper mold parting surface includes a high-side upper mold horizontal surface 102, a low-side upper mold horizontal surface 101, and a convex inclined surface 103 in the middle. A second arc-shaped connecting surface 104 is provided between the high-side upper mold horizontal surface 102 and the low-side upper mold horizontal surface 101 and the convex inclined surface 103. The two ends of the convex inclined surface 103 are respectively provided with an inclination angle matching the inclined surface 203. When the upper mold and the lower mold are closed, the convex inclined surface 103 covers the upper part of the mold cavity 400, and the two ends of the convex inclined surface 103 are in contact with the inclined surface. A third arc-shaped transition section is provided between the high-side upper mold horizontal surface 102 and the low-side upper mold horizontal surface 101 and the second arc-shaped connecting surface 104.

[0029] The above structure helps to make the clamping process of the upper and lower molds more flexible, effectively improving the service life of the mold.

[0030] The high-side upper mold horizontal plane 102 matches the high-side lower mold horizontal plane 202; the low-side upper mold horizontal plane 101 matches the low-side lower mold horizontal plane 201; when the upper mold and the lower mold are closed, there are gaps between the high-side upper mold horizontal plane 102 and the high-side lower mold horizontal plane 202, the low-side upper mold horizontal plane 101 and the low-side lower mold horizontal plane 201, and the first arc-shaped connecting surface 204 and the second arc-shaped connecting surface 104, which is conducive to the sudden cooling and heating process.

[0031] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and 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 present invention should be within the scope of protection of the present invention.

Claims

1. A foaming mold structure, the foaming mold structure is made of aluminum material, comprising an upper mold (100) and a lower mold (200) matched with the upper mold (100), the lower mold (200) being provided with a mold cavity (400) for molding a product (300), characterized in that: An upper mold parting surface is provided on the lower surface of the upper mold (100), and a lower mold parting surface is provided on the upper surface of the lower mold (200). The connection between the lower mold parting surface and the mold cavity (400) is an inclined surface (203) with a guiding function. The inclined surface (203) is inclined from high to low from the periphery to the center. The inclined angle of the inclined surface (203) relative to the horizontal plane is 15-30°; The lower mold parting surface comprises a high-side lower mold horizontal surface (202) and a low-side lower mold horizontal surface (201); the inclined surface (203) comprises a high-side lower mold inclined surface and a low-side lower mold inclined surface; the height of the high-side lower mold inclined surface is lower than the high-side lower mold horizontal surface (202); the height of the low-side lower mold inclined surface is lower than the low-side lower mold horizontal surface (201); A first arc-shaped connecting surface (204) is provided between the high-side lower mold inclined surface and the high-side lower mold horizontal surface (202), and between the low-side lower mold inclined surface and the low-side lower mold horizontal surface (201); a first arc-shaped transition section is provided between the upper part of the first arc-shaped connecting surface (204) and the high-side lower mold horizontal surface (202) or the low-side lower mold horizontal surface (201), and a second arc-shaped transition section is provided between the lower part of the first arc-shaped connecting surface (204) and the high-side lower mold inclined surface or the low-side lower mold inclined surface; The bottom of the mold cavity (400) is arranged tilted, the side wall of the mold cavity (400) is arranged vertically, and the angle between the tilted surface and the side wall of the mold cavity (400) is an obtuse angle; The upper mold parting surface comprises a high-side upper mold horizontal surface (102), a low-side upper mold horizontal surface (101) and a convex block inclined surface (103) in the middle; a second arc-shaped connecting surface (104) is provided between the high-side upper mold horizontal surface (102) and the low-side upper mold horizontal surface (101) and the convex block inclined surface (103); and both ends of the convex block inclined surface (103) are respectively provided with inclination angles matching the inclined surface (203); When the upper mold and the lower mold are closed, the convex inclined surface (103) covers the upper part of the mold cavity (400), and the two ends of the convex inclined surface (103) are in contact with the inclined surface.

2. A foaming mold structure according to claim 1, characterized in that: A third arc-shaped transition section is provided between the high-side upper mold horizontal surface (102), the low-side upper mold horizontal surface (101), and the second arc-shaped connecting surface (104).

3. A foaming mold structure according to claim 1, characterized in that: The high-side upper mold horizontal surface (102) matches the high-side lower mold horizontal surface (202); the low-side upper mold horizontal surface (101) matches the low-side lower mold horizontal surface (201); When the upper mold and the lower mold are closed, there are gaps between the high-side upper mold horizontal surface (102) and the high-side lower mold horizontal surface (202), the low-side upper mold horizontal surface (101) and the low-side lower mold horizontal surface (201), and the first arc-shaped connecting surface (204) and the second arc-shaped connecting surface (104).

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