Mold structure for avoiding product sticking to inclined top

Abstract

The utility model discloses a kind of mould structure to avoid product sticking to inclined top, belong to mould field, including mutually coordinated inclined top (1) and ejector block (2), wherein, the length of the guide section in rear mould core (5) of the ejector block (2) is less than half of the length after ejection, oil groove (3) is set on the ejector block (2) and inclined top (1), and waterway (4) is evenly set around the ejector block (2) and inclined top (1);Through the structure of the utility model, the problem of sticking inclined top when product demolding is solved, work efficiency is improved, and the mould structure is simplified.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold structure that prevents products from sticking to the inclined ejector. Background Technology

[0002] like Figure 5 As shown, when the undercut dimension 'a' of a buckle-shaped product is less than 10mm, due to the limited space, the angled ejector cannot be used as an ejector pin. During the demolding and ejection process, the product moves along with the angled ejector, meaning the product will stick to it. Therefore, there is an urgent need in this field to solve the problem of such products sticking to the angled ejector during demolding to prevent damage to the product. Summary of the Invention

[0003] The purpose of this invention is to provide a mold structure that prevents products from sticking to the inclined ejector pin, thereby solving the above-mentioned problems.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A mold structure for preventing products from sticking to the ejector pin includes an ejector pin and an ejector block that cooperate with each other. The length of the guide section of the ejector block in the rear mold core is less than half of the length after ejection. Oil grooves are provided on both the ejector block and the ejector pin, and water channels are uniformly provided around the ejector block and the ejector pin.

[0005] The oil tank and water channel design allows the product to be ejected smoothly.

[0006] As a preferred technical solution, the fit tolerance between the inclined top and the top block is: the fit tolerance of the inclined top is between -0.005 and -0.01 mm, and the tolerance of the inclined top hole is between -0.01 and -0.02 mm.

[0007] The fit tolerance between the top block and the angled top block should not be too tight, otherwise they will jam and prevent smooth demolding.

[0008] As a preferred technical solution, the oil troughs are evenly arranged on the inclined top and the top block respectively, and the size of the oil troughs is φ2×0.2mm~φ8×0.5mm; the size of the oil troughs varies according to the size of the inclined top, and in principle, the larger the inclined top, the larger the size of the oil troughs.

[0009] With the mold structure of this utility model, when the ejector block moves along the vertical ejection direction with the product during the ejection process, the inclined ejector moves in two directions (i.e., vertical direction Z and horizontal direction X). The ejector block and the product move relative to each other, so the product will not follow the inclined ejector, that is, it does not stick to the inclined ejector.

[0010] Compared with existing technologies, the advantages of this utility model are: It solves the problem of product sticking to the ejector pins during demolding through its structure, improving work efficiency and simplifying the mold structure. This is because: processing is simple; only wire cutting is required on the mold core, and the processing is as follows... Figure 2 The purple line shown, the top block is as follows Figure 5 It can be processed with just a grinding machine. Its advantages are that it is easy to process and can achieve stable and continuous production. Traditional structures are risky and cannot achieve continuous production. During the production process, molds need to be repaired frequently, which does not achieve longevity. Attached Figure Description

[0011] Figure 1 This is a diagram showing the assembly relationship between the product, the inclined ejector, and the ejector block in the mold. Figure 2 for Figure 1 A diagram showing the state of the middle block after it has been ejected. Figure 3 for Figure 1 The structural diagram of the sloping top in the middle; Figure 4 for Figure 1 Structural diagram of the central top block; Figure 5 for Figure 1 Structural diagram of the product; In the diagram: 1. Sloping ejector; 2. Ejector block; 3. Oil groove; 4. Water channel; 5. Rear mold core; 6. Product. Detailed Implementation

[0012] The present invention will be further described below with reference to the embodiments.

[0013] Example 1:

[0014] See Figures 1 to 3 A mold structure for preventing products from sticking to the inclined ejector, comprising an inclined ejector 1 and an ejector block 2 that cooperate with each other, wherein the length of the guide section of the ejector block 2 in the rear mold core 5 (i.e., Figure 2 The "A" in the middle is... Figure 4 The length C of the middle top block 2 is less than the length after it is ejected (i.e., Figure 2 Half of "B" in the middle, that is, A < 0.5B, otherwise the matching segment (i.e. Figure 2 If there is too little “B” in the middle, the inclined top will get stuck and unable to move; oil grooves 3 are provided on both the top block 2 and the inclined top 1, and water channels 4 are evenly arranged around the top block 2 and the inclined top 1. In this embodiment, the fit tolerance between the inclined top 1 and the top block 2 is: inclined top hole -0.01mm, inclined top -0.005mm; The oil troughs 3 are evenly distributed on the inclined top 1 and the top block 2, and the dimensions of each oil trough 3 are φ2×0.2mm; Figure 4 , Figure 5 As shown; In use, when the ejector plate drives the inclined ejector 1 to push out, the inclined ejector 1 moves along... Figure 2 When the product 6 moves in the Z and X directions, the product 6 and the top block 2 will only move in the Z direction. Thus, the top block 2 holds the product 6 in place, preventing the product 6 from moving in the horizontal X direction along with the inclined top 1, thereby achieving the purpose of smooth production and avoiding damage to the product 6.

[0015] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold structure to prevent products from sticking to the inclined ejector pin, characterized in that, It includes a slanted ejector (1) and an ejector block (2) that cooperate with each other. The length of the guide section of the ejector block (2) in the rear mold core (5) is less than half of the length after ejection. Oil grooves (3) are provided on both the ejector block (2) and the slanted ejector (1), and water channels (4) are uniformly provided around the ejector block (2) and the slanted ejector (1).

2. The mold structure for preventing products from sticking to the inclined ejector as described in claim 1, characterized in that, The fit tolerance between the inclined top (1) and the top block (2) is as follows: the fit tolerance of the inclined top is between -0.005mm and -0.01mm, and the tolerance of the inclined top hole is between -0.01mm and -0.02mm.

3. The mold structure for preventing product from sticking to the inclined ejector as described in claim 1, characterized in that, The oil troughs (3) are evenly arranged on the inclined top (1) and the top block (2), respectively, and the size of the oil troughs (3) is between φ2×0.2 and φ8×0.5mm.

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