CN206953466U - A kind of two-sided multidirectional core pulling injection mold - Google Patents

Abstract

The utility model discloses an injection mold for double-sided multi-directional core-pulling, which comprises two oppositely arranged slanted top blocks; the bonding surfaces of the heads of the two slanted top blocks are provided with mutually fitted inserts and embedded grooves; A cross-shaped dovetail is provided on the side of the head of the two inclined top blocks away from the fitting surface; two symmetrical sliding inclined top blocks are slid on both sides of the cross-shaped dovetail; the bottom of the sliding inclined top is hinged The column and the inclined top block are installed; the bottom of the inclined top block is provided with a downward convex groove; the inclined ejector rod is installed on the convex groove; the inclined ejector rod is installed on the thimble panel; The multi-directional core-pulling injection mold can integrate the top surface of the inclined top block through the cooperation of the insert and the insert groove. After the pouring is completed, it can be ejected at the same time, and it can also perform the core-pulling work independently. It can It can quickly complete the pouring and demoulding of the positioning groove or positioning column at the corner, and can also realize the demoulding of the round boss and undercut.

Description

A double-sided multi-directional core-pulling injection mold

technical field

The utility model relates to an injection mold, in particular to an injection mold for double-sided multi-directional core pulling, which belongs to the technical field of injection molds.

Background technique

The quality of the shell affects the service life of the product. In order to improve the product quality, the manufacturing process of the shell is usually improved. However, due to the defects of the existing technology and the limitation of the manufacturing process, for this reason, the Chinese patent application number: 201420438742.8 discloses a The injection mold for planting the shell includes an upper fixing plate, an upper template, a lower template and a lower fixing plate distributed from top to bottom, the lower part of the lower template is connected with a thimble panel and a thimble bottom plate through a spring mechanism, and the thimble panel The thimble bar is arranged on the top, and the thimble panel is provided with an inclined ejector bar, and the thimble bar extends upward into the mold cavity of the lower template, and also includes a first slider mechanism, a second slider mechanism, and a third slider mechanism , the upper template is provided with a cavity mold core, the lower template is provided with a core mold core, the first slider mechanism, the second slider mechanism, the third slider mechanism, the core mold core, Cavities and mold cores are combined to form the injection molding surface of the lower shell; using the injection mold of the utility model, the equipment cost is low, and the core pulling efficiency is high by using the oil cylinder slider, which is flexible and convenient, and is equipped with a wear-resistant block to ensure the life of the mold. The process is simple and the operation is easy , which reduces the cost and can ensure the quality of the plastic parts well, especially for some corners and internal curves of the lower shell, it can obtain good plastic products, avoid the shortcomings of the original molding method, and can Effectively overcome quality defects such as warping, mold sticking, and surface cracks of plastic parts, and the obtained plastic parts have a good appearance and high production efficiency; however, it is difficult to complete the pouring at one time for the cylindrical positioning grooves that need to be processed at the corners of the inner side of the shell And core pull demoulding.

Utility model content

In order to solve the above problems, the utility model proposes a double-sided multi-directional core-pulling injection mold, which can complete the pouring and demoulding of the positioning groove or positioning column at the corner at one time, and can also realize the demoulding of the circular boss and the undercut .

The double-sided multi-directional core-pulling injection mold of the present utility model comprises two inclined top blocks arranged oppositely; A cross-shaped dovetail is provided on the side of the head of the inclined top block away from the fitting surface; two symmetrical sliding inclined top blocks are slid on both sides of the cross-shaped dovetail; the bottom of the sliding inclined top block is connected to the inclined The top block is installed; the bottom of the inclined top block is provided with a downward convex groove; the inclined ejector rod is installed on the convex groove; the inclined ejector rod is installed on the thimble panel; the thimble panel is installed on the thimble push plate ; The cross-shaped dovetail is provided with a limit groove; a sliding limit pin is installed between the sliding inclined top block and the limit groove; Open the top surface, push the thimble panel upward to eject, so that the inclined ejector bar pushes out obliquely against the inclined ejector block, drives the sliding inclined ejector block to move together, and ejects the product from the mold core insert; due to the sliding inclined ejector block The sub-movement is different from the slanting top block. In the parting direction, it is pulled by the buckle on the upper side of the product, and the sub-movement in the direction of the product cannot be done temporarily, and only the sub-movement perpendicular to the direction of the parting surface can be done; The top blocks start to slide along the cross-shaped dovetail, and the sliding inclined top blocks are respectively drawn to the center of the front end of the cross-shaped dovetail, thereby completing the core-pulling and demoulding of the product’s cylindrical positioning groove and side undercut; After the core-pulling of the positioning slot and the side undercut is completed, the sliding slanting top block moves obliquely, and is limited by the sliding limit pin. It follows the slanting top block to perform synchronous core-pulling movement, and then applies force through the thimble push plate, so that Inserts and sockets are separated separately until the product is completely ejected.

Further, the insert and the socket form a smooth top surface after fitting.

Further, the cross-shaped dovetail and a sliding inclined top block form a semi-cylindrical plane.

Further, the two inclined jack blocks are installed on the independent thimble panel and thimble push plate.

Further, the front end of the cross-shaped dovetail is narrow and the rear end is wide, and it transitions sequentially from the front end to the rear end.

Compared with the prior art, the utility model has the double-sided multi-directional core-pulling injection mold of the utility model, which can integrate the top surface of the inclined top block through the cooperation of the insert block and the insert groove. After the pouring is completed, it can Simultaneous ejection, core pulling work can also be performed independently, which can complete the pouring and demoulding of the positioning groove or positioning column at the corner at one time, and can also realize the demoulding of the round boss and undercut.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic diagram of the cross-sectional structure of the head of the inclined jack block of the present invention.

Detailed ways

Example 1:

As shown in Figures 1 and 2, the double-sided multi-directional core-pulling injection mold of the present invention includes two oppositely arranged inclined top blocks 1; Fitted inserts 2 and insert grooves 3; the two inclined top blocks 1 are provided with a cross-shaped dovetail 4 on the side away from the joint surface; the two sides of the cross-shaped dovetail 4 are slidingly fitted with two symmetrical sliding The inclined top block 5; the bottom of the sliding inclined top block 5 is installed with the inclined top block 1 through a hinge column (not shown); the bottom of the inclined top block 1 is provided with a downward convex groove 6; the convex groove 6 is installed with a slanted ejector rod 7; the slanted ejector rod 7 is installed to the thimble panel 8; the thimble panel 8 is installed to the thimble push plate 9; the cross-shaped dovetail 4 is provided with a limit groove 10; A sliding limit pin 11 is installed between the inclined ejector block 5 and the limit groove 10; after the mold is opened, the injection molding motorized template pulls the movable mold part of the mold back; The ejector rod pushes out obliquely against the inclined top block, driving the sliding inclined top block to move together, and ejecting the product from the mold core insert; because the sub-movement of the sliding inclined top block is different from that of the inclined top block, the product is When the buckle on the upper side is pulled, the parting movement in the direction of the product cannot be done temporarily, and only the parting movement in the direction perpendicular to the parting surface can be done; therefore, slippage begins to occur between the inclined top block and the sliding inclined top block along the cross-shaped dovetail , the sliding inclined top block is respectively drawn towards the center of the front end of the cross-shaped dovetail, thereby completing the core-pulling demoulding of the cylindrical positioning groove and the side undercut of the product; after the core-pulling of the cylindrical positioning groove and the side undercut of the product is completed, The sliding inclined jacking block advances obliquely, is limited by the sliding limit pin, and performs synchronous core-pulling movement following the inclined jacking block, and then applies force through the thimble push plate to separate the insert and the slot until the product is completely ejected. out.

The embedded block 2 and the slotted groove 3 form a smooth top surface after fitting.

The cross-shaped dovetail 4 and a sliding inclined top block 5 form a semi-cylindrical plane.

The two inclined ejector blocks 1 are installed on the independent thimble panel 8 and thimble push plate 9 .

The front end of the cross-shaped dovetail 4 is narrow and the rear end is wide, and it transitions from the front end to the rear end in sequence.

The double-sided multi-directional core-pulling injection mold of the utility model can integrate the top surface of the inclined top block through the cooperation of the insert block and the insert groove. Core work, which can complete the pouring and demoulding of the positioning groove or positioning column at the corner at one time, and can also realize the demoulding of the round boss and undercut.

Inspired by the above-mentioned ideal embodiment according to the utility model, and through the above-mentioned description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (5)

1. A double-sided multi-directional core-pulling injection mold, characterized in that: it includes two oppositely arranged slanted top blocks; the head bonding surfaces of the two slanted top blocks are provided with mutually fitted inserts and slots ; The head of the two inclined top blocks is far away from the side of the fitting surface, and a cross-shaped dovetail is arranged; the two sides of the cross-shaped dovetail are slidingly fitted with two symmetrical sliding inclined top blocks; the bottom of the sliding inclined top block passes through The hinged column is installed with the inclined jacking block; the bottom of the inclined jacking block is provided with a downward convex groove; the inclined ejector rod is installed on the convex groove; the inclined ejector rod is installed on the ejector panel; the ejector panel is installed to the thimble push plate; the cross-shaped dovetail is provided with a limit slot; a sliding limit pin is installed between the sliding inclined top block and the limit slot. 2. The double-sided multi-directional core-pulling injection mold according to claim 1, characterized in that: the insert block and the insert groove form a smooth top surface after fitting. 3. The double-sided multi-directional core-pulling injection mold according to claim 1, wherein the cross-shaped dovetail and a sliding inclined top block form a semi-cylindrical plane. 4. The double-sided multi-directional core-pulling injection mold according to claim 1, characterized in that: the two inclined ejector blocks are installed on the independent ejector pin panel and ejector pin push plate. 5. The double-sided multi-directional core-pulling injection mold according to claim 1, characterized in that: the front end of the cross-shaped dovetail is narrow and the rear end is wide, and it transitions from the front end to the rear end in sequence.