CN211891791U - Injection mold core-pulling mechanism with large sliding block and built-in small sliding block - Google Patents

Abstract

The utility model belongs to the technical field of molds, and in particular relates to a core-pulling mechanism for an injection mold with a large sliding block built-in small sliding block, comprising a large sliding block and a small sliding block; the large sliding block is provided with a stepped part, and the stepped surface of the stepped part is There is a groove, and a core hole is arranged on the upper surface of the step part; the small slider includes a first horizontal part and a second horizontal part, the first horizontal part is located above the second horizontal part, and the outer part of the first horizontal part is The end is fixed with the second horizontal part; when the mold is closed, the second horizontal part slides inward along the groove, and drives the first horizontal part to be inserted into the large slider along the core hole and fixed with the large slider; when the mold is opened, The small slider slides outward along the groove and drives the first horizontal part to pull out the product. The utility model adopts a structure in which a large sliding block covers a small sliding block. When the mold is opened, in order to ensure a deformation space before the product is strongly released and deformed, the first horizontal part of the small sliding block is first pulled away from the product, which is convenient for the large sliding block to extract. When the core is pressed, the buckle position of the product is deformed to the inside, so that the large slider can be smoothly ejected from the buckle position.

Description

A core-pulling mechanism for an injection mold with a large slider and a built-in small slider

technical field

The utility model belongs to the technical field of molds, and particularly relates to a core-pulling mechanism for an injection mold with a large slider and a built-in small slider.

Background technique

With the rapid development of mechanization and industrialization, molds are widely used in production workshops. Due to the convenience and efficiency of molds, the production efficiency has been greatly improved, so the development of molds has also become more accurate and efficient.

When designing the workpiece, the specific structure of the workpiece should be determined according to the use of the workpiece. Due to the use of some workpieces, it will be designed to be a product structure with an inner hollow and a full-circle buckle on the outer surface edge. Conventionally, the left and right sliders are released from the mold. There will be upside-down buckles. In the case of meeting the needs of product appearance, the priority to use is the strong demoulding solution. However, the product is hollow inside, and additional core-pulling needs to be added inside at the same time. Since the strong release needs to ensure the position space for the product to be deformed, it is impossible to achieve strong release from the mold without the deformation space before the core-pulling movement.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned deficiencies in the prior art, the purpose of this utility model is to provide a core-pulling mechanism for an injection mold with a large slider and a built-in small slider. Make sure that there is room for deformation, and let the inner small slider pull out the core first, so that the product buckle position can be deformed to the inside when the large slider core pulls, so that the large slider can be pulled out of the mold smoothly.

In order to achieve the above purpose, the technical solution of the present invention is an injection mold core pulling mechanism with a large slider built-in small slider, including a large slider and a small slider, the large slider is provided with a step portion, the A groove is provided on the stepped surface of the stepped portion, and a core hole is provided on the upper surface of the stepped portion; the small slider includes a first horizontal portion and a second horizontal portion, and the first horizontal portion is located in the Above the second horizontal part, and the outer end of the first horizontal part is fixed with the second horizontal part; the second horizontal part is slidably installed in the groove; when the mold is closed, the second horizontal part is The horizontal part slides inward along the groove, and drives the first horizontal part to be inserted into the large slider along the core hole and fixed with the large slider; when the mold is opened, the small slider It slides outward along the groove and drives the first horizontal part to pull out the product.

Further, the core pulling direction of the large slider and the core pulling direction of the small slider are in the same direction.

Further, the small sliding block is connected with the piston rod of the oil cylinder, and the outer side of the stepped surface is provided with a limit plate for restricting the small sliding block to slide outward.

Further, an oil cylinder connecting head is installed on the outer side of the small sliding block, and the oil cylinder connecting head is connected with the piston rod of the oil cylinder.

Further, the outer side of the small slider is provided with a C-shaped limit groove, one end of the oil cylinder connecting head is placed in the C-shaped limit groove, and the other end is placed outside the C-shaped limit groove. and connected with the piston rod of the oil cylinder.

Further, the inner wall of the core hole of the large slider is provided with an annular groove matching the annular protrusion on the outer surface of the product.

Further, when the mold is opened, the sliding stroke of the second horizontal portion is not less than the length of the first horizontal portion inserted into the product.

Compared with the prior art, the beneficial effects of the present utility model:

(1) The utility model adopts the structure of the large sliding block covering the small sliding block. When the mold is closed, the first horizontal part of the small sliding block is inserted into the middle and large sliding block, and the product cavity is formed between the large sliding block and the large sliding block. ;When opening the mold, in order to ensure that there is a deformation space before the product is strongly deformed, the first horizontal part of the small slider is first pulled away from the product, so that the product buckle position is deformed to the inside when the large slider is core-pulling, so that the large sliding block is pulled out. The block is buckled and ejected smoothly throughout the week;

(2) In the present invention, a limit plate for restricting the outward sliding of the small slider is provided on the outer side of the step surface of the step, so that the small slider can reach the limit plate after sliding for a certain displacement, and it can reach the limit plate in the oil cylinder. Under the action of driving the large slider to move, the forced demoulding function is completed.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the structural representation of the product of the utility model;

Fig. 2 is the structural representation of the product of the present utility model;

Fig. 3 is the A-A view of Fig. 2;

Fig. 4 is the enlarged schematic diagram at B in Fig. 3;

5 is a schematic structural diagram of an injection mold core-pulling mechanism with a large slider built-in small slider provided by an embodiment of the present utility model;

6 is a schematic structural diagram of an injection mold core-pulling mechanism with a large slider built-in small slider provided by an embodiment of the present utility model;

7 is a schematic structural diagram of an injection mold core-pulling mechanism with a large slider built-in small slider provided by an embodiment of the present utility model;

8 is a schematic diagram of the clamping state of the small slider of the injection mold core-pulling mechanism with the large slider built-in small slider provided by the embodiment of the present utility model;

9 is a schematic diagram of the mold opening state of the small slider of the injection mold core-pulling mechanism with the large slider built-in small slider provided by the embodiment of the present utility model;

In the figure: 1. Large slider, 11, stepped surface, 12, upper surface, 13, groove, 2, small slider, 21, first horizontal part, 22, second horizontal part, 3, oil cylinder, 4 , Piston rod, 5, Cylinder connector, 6, C-shaped limit groove, 7, Limit plate, 8, Product, 9, Ring protrusion.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, rather than indicating Or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first" and "second" may expressly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, the meaning of "multiple" are two or more.

As shown in FIGS. 5-9 , an embodiment of the present invention provides an injection mold core-pulling mechanism in which a large slider 1 has a built-in small slider 2, including a large slider 1 and a small slider 2. The large slider 1 There is a stepped portion on the top, a groove 13 is provided on the stepped surface 11 of the stepped portion, and a core hole is provided on the upper side surface 12 of the stepped portion; the small slider 2 includes a first horizontal portion 21 and a second horizontal portion 21. Two horizontal parts 22, the first horizontal part 21 is located above the second horizontal part 22, and the outer end of the first horizontal part 21 is fixed with the second horizontal part 22; the second horizontal part 22 is slidably installed in the groove 13; during mold clamping, the second horizontal portion 22 slides inward along the groove 13, driving the first horizontal portion 21 to be inserted into the The large slider 1 is inside and fixed with the large slider 1 ; when the mold is opened, the small slider 2 slides outward along the groove 13 and drives the first horizontal portion 21 to pull out the product 8 . The utility model adopts the structure of a large sliding block 1 and a small sliding block 2. When the mold is closed, the first horizontal part 21 of the small sliding block 2 is inserted into the middle and large sliding block 1, and a product is formed between the large sliding block 1 and the large sliding block 1. When the mold is opened, in order to ensure that there is a deformation space before the product is strongly deformed, the first horizontal part 21 of the small slider 2 is first pulled away from the product, so that the product buckle position is oriented to the large slider 1 when the core is pulled. The internal deformation makes the large slider 1 release the mold smoothly in the whole circumference, so as to complete the forced release of the whole circumference.

Further, the core pulling direction of the large slider 1 and the core pulling direction of the small slider 2 are in the same direction. The large sliding block 1 and the small sliding block 2 in this embodiment may be driven by different oil cylinders 3 , or may be driven by the same oil cylinder 3 .

Further, the small sliding block 2 is connected to the piston rod 4 of the oil cylinder 3 , and the outer side of the stepped surface 11 is provided with a limiting plate 7 for restricting the small sliding block 2 to slide outward. The large slider 1 and the small slider 2 are driven by the same oil cylinder 3. After the small slider 2 encounters the limit plate 7 after sliding for a certain displacement, under the action of the limit plate 7, the oil cylinder 3 continues to move, and the small slider 2 will drive the large slider 1 to move to complete the forced demoulding function.

Further, as shown in FIGS. 6-7 , an oil cylinder connecting head 5 is installed on the outer side of the small sliding block 2 , and the oil cylinder connecting head 5 is connected with the piston rod 4 of the oil cylinder 3 . Further, the outer side of the small slider 2 is provided with a C-shaped limit groove 6, one end of the oil cylinder connecting head 5 is placed in the C-shaped limit groove 6, and the other end is placed in the C-shaped limit groove 6. The limit groove 6 is outside and connected with the piston rod 4 of the oil cylinder 3 . The oil cylinder connecting head 5 is fixed by the C-shaped limiting groove 6 to realize the connection between the piston rod 4 of the oil cylinder 3 and the small slider 2, so that the small slider 2 can be driven to displace.

Further, the inner wall of the core hole of the large slider 1 is provided with an annular groove 13 matching the annular protrusion 9 on the outer surface of the product, so as to form a circle of protrusions on the outer surface of the product.

Further, when the mold is opened, the sliding stroke of the second horizontal portion 22 is not less than the length of the first horizontal portion 21 inserted into the product 8 to ensure that the second horizontal portion 22 moves outward along the groove 13 for the maximum stroke. At the time, the first horizontal part 21 can be separated from the product 8 to provide a deformation space for the forced release of the large slider 1 .

The product applied by the injection mold core pulling mechanism of this embodiment is shown in Figures 1 to 4. One side of the product 8 has a protruding circular hole, and the outer surface of the circular hole has a ring of 1 mm high annular convexity from 9. The specific process of using the core-pulling mechanism of this embodiment to open the mold is as follows: after the mold is opened, use the oil cylinder 3 to drive the small slider 2 to pull the core to move 60mm first, and then the small slider 2 touches the limit plate 7 of the large slider 1 , the oil cylinder 3 continues to move, and the small slider 2 fully drives the large slider 1 to move to complete the forced demoulding function; since the small slider 2 pulls the core first, the core of the small slider 2 inside the product is pulled out, which is convenient for the large slider 1 to pull out. When the core is pressed, the buckle position of the product is deformed to the inside, so that the large slider 1 can be smoothly ejected from the buckle position around the whole circumference.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the protection scope of the present invention.

Claims (7)

1. A core-pulling mechanism for an injection mold with a built-in small slider in a large slider, characterized in that: it includes a large slider and a small slider, the large slider is provided with a stepped portion, and the stepped surface of the stepped portion is A groove is provided, and a core hole is provided on the upper surface of the step part; the small slider includes a first horizontal part and a second horizontal part, and the first horizontal part is located above the second horizontal part , and the outer end of the first horizontal part is fixed with the second horizontal part; the second horizontal part is slidably installed in the groove; when the mold is clamped, the second horizontal part runs along the groove The groove slides inward, driving the first horizontal part to be inserted into the large slider along the core hole and fixed with the large slider; when the mold is opened, the small slider moves along the groove It slides out and drives the first horizontal part to pull out the product. 2. The core-pulling mechanism of an injection mold with a large-slider built-in small-slider according to claim 1, wherein the core-pulling direction of the large-slider is the same as the core-pulling direction of the small-slider direction. 3. A core-pulling mechanism for an injection mold with a large sliding block built-in small sliding block according to claim 2, wherein the small sliding block is connected with the piston rod of the oil cylinder, and the outer side of the stepped surface is provided with a A limit plate restricting the outward sliding of the small slider. 4 . The core-pulling mechanism of an injection mold with a large slider with a built-in small slider according to claim 3 , wherein an oil cylinder connecting head is installed on the outer side of the small slider, and the oil cylinder connecting head is connected to the Piston rod connection of the cylinder. 5. The core-pulling mechanism of an injection mold with a large slider with a built-in small slider according to claim 4, wherein a C-shaped limit groove is provided on the outer side of the small slider, and the cylinder connecting head is provided with a C-shaped limit groove. One end is placed in the C-shaped limiting groove, and the other end is placed outside the C-shaped limiting groove and is connected with the piston rod of the oil cylinder. 6. The core-pulling mechanism of an injection mold with a large slider with a built-in small slider according to claim 1, wherein the inner wall of the core hole of the large slider is provided with an annular protrusion on the outer surface of the product Matching annular grooves. 7 . The core-pulling mechanism of an injection mold with a large slider and a built-in small slider according to claim 1 , wherein when the mold is opened, the sliding stroke of the second horizontal portion is not less than that of the first horizontal portion. 8 . The length to insert into the product.

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