CN201070819Y - Push-out structure of sleeve - Google Patents

Abstract

The utility model discloses a sleeve push-out structure applicable to a mould structure. The mould includes a core template and a cavity template, wherein, a core insert is arranged on one side of the core template, a cavity insert is arranged on one side of the cavity template, and a die space is formed between the core insert and the cavity insert. The die space is used for a moulding product, and a concave hole is arranged at the surface of the outer side of the moulding product. The sleeve push-out structure includes a slide rod, a slanting guide pole, a first position block, a second position block, a slide wedge and a sleeve. One end of the sleeve props up the edge of the concave hole outside the product, the other end of the sleeve is connected with the second position block. The sleeve is hollow, and the inner part of the sleeve is provided with a mandril. The sleeve is arranged on the mandril which corresponds to the concave hole outside the product. One end of the mandril is inset to the concave hole, and the other end of the mandril is fixedly connected with the first position block. In this way, in the process of die sinking, the sleeve and the mandril can be respectively separated with the concave hole smoothly.

Description

Sleeve ejection structure

【Technical field】

The utility model relates to the field of moulds, in particular to an ejection structure in the mould, in particular to a sleeve ejection structure which can smoothly eject inserts from concave holes on the outer side of a product.

【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. For general products, the product is ejected after the mold is opened, and there is no other action when the mold is opened; for products with concave holes (such as screw holes, etc.) out of the middle.

As shown in Figure 1, it is a schematic diagram of the existing mold entry and ejection structure; the mold includes a female template 10 and a male template 20, the female template 10 includes a female mold core 11, and the male template 20 corresponds to the female mold core 11 The position is provided with male mold kernel 21, and product 30 is positioned between female mold kernel 11 and male mold kernel 21, and this product 30 outer surface is provided with a recessed hole 31, and this mold also includes a slide block 40, and it is positioned at female template 10 and male mold kernel 21. Between the templates 20 and adjacent to the male mold core 20 and the female mold core 10, an insert 41 is provided on the slider 40 corresponding to the concave hole 31, and one end of the insert 41 is fixed on the slider 40 The middle part of the other end of the insert 41 protrudes to form a convex portion 42, the convex portion 42 corresponds to the concave hole 31, and is used to form the concave hole 31. The mother template 10 is also provided with an inclined guide post 12, which is fixed on the On the master template 10 and penetrate into the inside of the slider 40 . In this way, after the molding of the product 30 is completed, the male template 20 is separated from the female template 10 during the mold opening process. Since the position of the inclined guide post 12 is fixed, the slider 40 will produce a One horizontal displacement to the right, now the slide block 40 will drive the insert 41 out of the concave hole 31, that is, complete the insert ejection process.

However, when the insert 41 breaks away from the concave hole 31, since the product 30 is not completely cooled at this time, and the contact area between the insert 41 and the product 30 is relatively large, a certain pulling force will be generated when the insert 41 is separated, which will easily lead to the phenomenon of drawing mold. As for affecting the beauty and quality of the product.

【Content of invention】

In view of the above problems, the utility model provides a sleeve ejection structure to overcome the defect that the existing insert ejection structure tends to cause the products with concave holes on the outer surface to have dies.

In order to achieve the above purpose, the sleeve ejection structure provided by the utility model is suitable for a mold structure, the mold includes a male template and a female template, a male mold core is provided on one side of the male template, and a male template is provided on one side of the female template. There is a female mold core, a cavity is formed between the male mold core and the female mold core, and the cavity is used for molding products, and a concave hole is provided on the outer surface of the molded product, wherein the sleeve ejection mechanism includes:

A slider, which is located between the female template and the male template and adjacent to the cavity;

An oblique guide post, which is fixed on the master template and penetrates into the slide block;

A first fixed block, which is fixed on the outer side of the slider farther away from the product;

A second fixed block, which is located inside the slider, and a certain reserved space is provided between the side of the second fixed block opposite to the inclined guide post and the slider;

A slider bundle block, which is fixed on the master formwork and is located above the slider, and abuts against the lower part of the second fixed block;

A sleeve, one end of which is against the edge of the concave hole on the outside of the product, and the other end is connected with the second fixed block, the sleeve is hollow, and a core is arranged inside, the sleeve is sleeved on the core, and the The core corresponds to the concave hole on the outside of the product, one end of the core is embedded in the concave hole, and the other end is fixedly connected to the first fixing block.

In this way, when the mold is opened, the male formwork moves vertically downward relative to the female formwork, and the inclined guide column will also have a displacement in the horizontal direction while moving upward, so the slider is pushed away from the product by the horizontal thrust of the inclined guide column. direction, because the lower part of the second fixed block is offset against the beam of the slider, the second fixed block can only move downward with the slider at first, because there is a reserved space between the second fixed block and the slider, so the slider It can smoothly move horizontally and push the first fixed block to bring the core out of the concave hole. When the second fixed block moves down until it no longer touches the slider bundle, the slider will drive the second fixed block to move horizontally , so that the sleeve is completely disengaged from the recess.

Compared with the prior art, the utility model completes the detachment process of the sleeve from the concave hole in two steps. First, the core is ejected from the concave hole, and then the sleeve is separated from the edge of the concave hole. In this way, because the core The contact area between the sub and the sleeve and the concave hole is small, so the suction force generated during separation is small, which can effectively reduce the occurrence of the die-drawing phenomenon, so it has good practicability and promotion value.

【Description of drawings】

Fig. 1 is a schematic diagram of the existing mold entry and ejection structure.

Figure 2 is a schematic diagram of a molded product.

Fig. 3 is a schematic diagram of the ejection structure of the sleeve.

Fig. 4 is a schematic diagram of the structure when the core is pushed out in the sleeve ejection structure.

【Detailed ways】

In order to have a further understanding of the structure, composition and technical characteristics of the present utility model, the following detailed description is given in conjunction with the accompanying drawings:

Please refer to Figure 2 and Figure 3, wherein Figure 2 is a schematic diagram of a molded product, and Figure 3 is a schematic diagram of the sleeve ejection structure; the sleeve ejection structure provided by the utility model is suitable for a mold structure, and the mold It includes a female template 50 and a male template 60, one side of the female template 50 also includes a female mold core 51, one side of the male template 60 also includes a male mold core 61, and the female mold core 51 and the male mold core 61 are identical. Correspondingly, a mold cavity (not shown) is formed between the two, and the mold cavity is used to form a product 70. A concave hole 71 is provided on the outside of the product 70. In this embodiment, the concave hole 71 is a screw hole and the whole protrudes from the outside of the product.

As shown in Figure 2, the sleeve ejection structure includes: a slider 80, which is located between the female template 50 and the male template 60 and adjacent to the cavity; an inclined guide post 83, which is fixed on the female template 50 Go up and obliquely penetrate into the slider 80; a first fixed block 81, which is fixed on the outer side of the slider 80 far away from the product 70; a second fixed block 82, which is located inside the slider 80, the first A certain reserved space 84 is provided between the side opposite to the inclined guide column 83 on the second fixed block 80 and the slide block 80, and the slide block 80 can move horizontally within the scope of the reserved space 84 without being hindered; Slider bundle piece 85, it is fixed on the mother template 50 and is positioned at the top of slide block 80, and abuts against the bottom of second fixed block 82; This sleeve ejection structure also comprises a sleeve 86, and this sleeve 86 one end is connected with The edge of the concave hole 71 on the outside of the product 70 is against each other, and the other end is connected with the second fixed block 82. The sleeve 86 is hollow, and a core 87 is arranged inside it. The sleeve 86 is sleeved on the core 87, and the The core 87 corresponds to the concave hole 71 on the outside of the product, one end of the core 87 is embedded in the concave hole 71 , and the other end is fixedly connected to the first fixing block 81 .

In this way, when the mold is opened, the male formwork 60 moves vertically downward relative to the female formwork 50, and the slanted guide post 83 will also have a displacement in the horizontal direction while moving upward, so the slider 80 is pushed by the slanted guide post 83 in the horizontal direction. Move back to the direction away from the product 70, because the lower part of the second fixed block 82 is against the slider bundle block 85, and the slider bundle block 85 is fixed on the mother template 50, so the second fixed block 82 can only follow the slider 80 at first. Moving downward, because there is a reserved space 84 between the second fixed block 82 and the slider 80, the slider 80 can move horizontally smoothly and push the first fixed block 81 to push the core 87 out of the concave hole 71, As shown in Figure 4, it is a structural schematic diagram when the core is ejected in the sleeve ejection structure; It will drive the second fixing block 82 to move downward and move horizontally at the same time, so that the sleeve 83 is completely disengaged from the concave hole 71 , thus completing the ejection process of the sleeve 83 .

In this embodiment, the recessed hole 71 on the outside of the product is a screw hole protruding from the outer surface of the product 70, but in practical applications, the sleeve ejection structure is also applicable to products whose recessed hole is recessed in the outer surface of the product. It is enough to make appropriate adjustments to the length of the core and the corresponding components, and details will not be repeated here.

Compared with the prior art, the structure of the utility model uses the sleeve combined with the core to take the structure of the prior art, so that the core is first ejected from the concave hole, and then the sleeve is separated from the product, so it can reduce The contact area between the insert and the product during ejection can effectively reduce the phenomenon of die drawing, so this structure has good practicability and promotion value.

Claims (1)

1. A sleeve ejection structure, suitable for a mold structure, the mold includes a male template and a female template, one side of the male template is provided with a male mold core, and one side of the female template is provided with a female mold core, A cavity is formed between the male mold core and the female mold core, and the cavity is used to form a product. The outer surface of the product is provided with a concave hole. It is characterized in that the sleeve ejection structure includes: A slider, which is located between the female template and the male template and adjacent to the cavity; An oblique guide post, which is fixed on the master template and obliquely penetrates into the slider; A first fixed block, which is fixed on the outer side of the slider farther away from the product; A second fixed block, which is located inside the slider, and a certain reserved space is provided between the side of the second fixed block opposite to the inclined guide post and the slider; A slider beam block, which is located above the slider and abuts against the lower part of the second fixed block; A sleeve, one end of which is against the edge of the concave hole on the outside of the product, and the other end is connected with the second fixed block, the sleeve is hollow, and a core is arranged inside, the sleeve is sleeved on the core, and the The core corresponds to the concave hole on the outside of the product, one end of the core is embedded in the concave hole, and the other end is fixedly connected to the first fixing block.

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