CN101347971A - New type of inclined tip ejection structure - Google Patents

Abstract

The invention relates to a novel inclined pin knockout structure which is suitable for a mould structure. The mould comprises a core plate which is provided with a core, a knockout plate is arranged below the core plate, wherein, the inclined pin knockout structure comprises a inclined pin boss, at least two inclined pins and a knockout part; the inclined pin boss is arranged in the core plate; the inclined pins are fixed on the inclined pin boss, and the top of each inclined pin is provided with a bending part; the knockout part is arranged between the inclined pin boss and the knockout plate, and the knockout part is connected with the inclined pin boss and the knockout plate respectively. The inclined pin knockout structure can knock products with barbs on the surface out of the mould smoothly. The structure has the advantage of simple structure and easy implementation and has good popularization value in the mould field.

Description

New type of inclined tip ejection structure

【Technical field】

The invention relates to the field of moulds, in particular to a slanted pin in a mold, and specifically refers to a slanted pin ejection structure that can smoothly eject a product from a mold.

【Background technique】

At present, the housing of electronic products is usually molded to complete its molding process. The molding process is as follows: first, the melt is injected into the cavity of the mold; the product is cooled and formed; the mold is opened and the product is ejected from the mold. When the product is ejected, the existing mold is mostly completed by its internal ejection mechanism. Since there are many barbs on the shell of the electronic product, the general ejection mechanism cannot eject the product. At this time, the product must be ejected from the mold smoothly by using a slanted tip seat.

As shown in Figure 1, it is a schematic diagram of the existing oblique pin ejection structure; 11 is fixed on the slant tip seat 10, and the slant tip 11 intersects with the slant tip seat 10 obliquely, and the slant tip 11 passes through the male die core 15 and the male template 14 from top to bottom and then connects with the slant tip seat 10, and The top of the inclined tip 11 is in contact with the lower surface of the product 16. As shown in the figure, the product 16 is provided with a barb 17, and the top of the inclined tip 11 is provided with a bent portion 18 corresponding to the barb 17. In this way, when the ejector plate 13 moves upwards, the inclined tip seat 10 will push the inclined tip 11 to move obliquely upwards. At this time, when the inclined tip 11 pushes the product 16 upwards, it also produces a displacement in the horizontal direction, which can make the inclined tip 11 move upwards. Tip 11 is separated from barb 17, thereby product 16 is ejected from male die core 15 smoothly.

However, if the product is provided with two or more barbs that are closer to each other, such as the first barb 21 and the second barb 22 on the product 20 as shown in Figure 2, if the above-mentioned inclined tip top is used To produce the structure, two oblique pins are required. Because of the long length of the oblique pins 11, the two oblique pins will interfere with each other in the mold and cannot be used, which will easily bring inconvenience to the production.

【Content of invention】

In view of the above problems, the present invention provides a new type of inclined tip ejection structure to overcome the defect that the existing inclined tip ejection structure is not suitable for products with two or more barbs with relatively close distances on the ejection surface.

In order to achieve the above object, the novel oblique tip ejection structure provided by the present invention is suitable for a mold structure, the mold includes a male template, a male mold core is arranged on the male template, and an ejector plate is arranged below the male template. Wherein the inclined pin ejection structure includes: an inclined pin seat, the inclined pin seat is arranged in the male template; at least two inclined pins are fixed on the inclined pin seat, and each inclined pin top is provided with a bending part; An ejecting part is arranged between the inclined tip seat and the ejecting plate, and the ejecting part is respectively connected with the inclined tip seat and the ejecting plate.

Compared with the prior art, the new inclined pin ejection structure sets the inclined pin seat in the male formwork, and connects with the ejector plate through an ejecting part, thus reducing the extension length of the inclined pin in the mold, Therefore, there will be no cross-interference phenomenon when ejecting products with two or more barbs with relatively close distances on the surface; and the invention has a simple structure, is easy to realize, and has good promotion value in the field of molds.

【Description of drawings】

Fig. 1 is a schematic diagram of the existing inclined tip ejection structure.

Figure 2 is a schematic diagram of a product with barbs on its surface.

Fig. 3 is a schematic diagram of the ejection structure of the new inclined tip.

Fig. 4 is a schematic diagram of the state before and after ejection of the product with the new inclined tip ejection structure.

【Detailed ways】

In order to have a further understanding of the structure, composition and technical characteristics of the present invention, the following will be described in detail in conjunction with the accompanying drawings:

The present invention is designed for products that cannot be ejected from the surface with two or more barbs that are relatively close to each other in the prior art. As shown in Figure 2, the surface opposite to the male die core (not shown) There are two barbs 21 and 22 on the side, and the distance between the barb 21 and the barb 22 is relatively close.

Please refer to Fig. 2 and Fig. 3, wherein Fig. 3 is a schematic diagram of the ejection structure of the new oblique pin; The mold core 31 is also provided with an ejector plate 33 below the male template 30, and the mold also includes a female mold core 32, and the product 20 is placed between the male mold core 31 and the female mold core 32.

As shown in FIG. 3 , the novel slanted tip ejection structure includes a slanted tip seat 34 , the slanted tip seat 34 is arranged in the male formwork 30 , and the slanted tip seat 34 is connected with the ejector plate 33 through a ejector portion 39 In this embodiment, the ejector part 39 includes two thimbles, and the two ends of the two thimbles are respectively fixed on the bottom surface of the slanted tip seat 34 and the surface of the ejector plate 33, and the slanted tip seat 34 is also provided with two slanted tips 35, 36. , and the oblique tips 35, 36 pass through the male mold core 31 and the male template 30 from top to bottom in turn and intersect with the oblique tip seat 34 respectively. The tops of the two oblique tips 35, 36 are against the product 20, and the The top ends of 35 and 36 are respectively provided with a bending portion 37 , 38 corresponding to the barb 21 and 22 , and the bending portion 37 , 38 is engaged with the barb 21 , 22 respectively.

As shown in Figure 4, it is a schematic diagram of the state before and after ejection of the product with the new type of inclined tip ejection structure. When the ejector plate 33 moved upwards, the ejector part 39 pushed the slanted tip seat 34 to move upwards, and the slanted tip 35, 36 pushed the product 20 upwards along with the slanted tip seat 34, because the slanted tip 35, 36 and the slanted tip seat 34 The oblique intersects, so when it moves upwards, a certain displacement will be produced in the horizontal direction, so when the two oblique tips 35, 36 push the product 20 upwards, the two bending parts 37, 38 are respectively connected to the barb 21. , 22 are separated, so that the product 20 can be ejected from the mold smoothly.

In this embodiment, the product 20 is provided with two barbs 21 and 22 which are relatively close to each other, while the new type of oblique tip ejection structure is suitable for products with two or more barbs on the surface. The number of slant tips on the slant tip seat 34 and the position of the slant tips can be properly adjusted, wherein each slant tip corresponds to a barb, and for different types of barbs, the bending portion at the top of the slant tip can be changed accordingly It can be fastened with the barb; in this embodiment, the ejector part 39 is two thimbles, in actual production and application, the ejector part can be one or more thimbles; and in actual application, the inclined tip and The length of the ejector can be adjusted according to the distance between the barbs.

Compared with the prior art, the new type of inclined pin ejection structure sets the inclined pin seat in the male template, which reduces the extension length of the inclined pin in the mold, so it is suitable for the ejection surface to be provided with two closer distances. Or the product of a plurality of barbs; and the present invention is simple in structure, is easy to realize, has better popularization value.

Claims (3)

1. A new type of inclined tip ejection structure, suitable for a mold structure, the mold includes a male template, a male mold core is provided on the male template, and an ejector plate is provided below the male template, it is characterized in that the The inclined ejection structure includes: A slanted tip seat, the slanted tip seat is set in the male formwork; At least two slanting tips, which are fixed on the slanting tip seat, and each tip of the slanting tip is provided with a bending portion; An ejecting part is arranged between the inclined tip seat and the ejecting plate, and the ejecting part is respectively connected with the inclined tip seat and the ejecting plate. 2. The novel ejector structure with inclined tip according to claim 1, characterized in that: said ejector part comprises at least one ejector pin. 3. The novel ejection structure with inclined pins according to claim 1, characterized in that: said inclined pins all intersect obliquely with the inclined pin seats.

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