A double-inverted-docking demolding structure

Abstract

The present application relates to injection mold technical field, specifically refers to a kind of double reverse buckle demolding structure;Including base and demolding assembly, the base is equipped with core mold, the side of base is equipped with opening, demolding assembly movably is equipped in the opening of base;The demolding assembly includes first module, second module, third module and bottom die;The third module is equipped in the inner side of second module and is connected with it cooperation, third module, bottom die and core mold form cavity, and bottom die and core mold between being equipped with reverse buckle structure;The present application is reasonable in structure, demolding assembly and the core mold cavity on base, when opening mould, first module drives bottom die and second module along guide rod and displaces outward, make the reverse buckle structure between bottom die and core mold demolding, and then cylinder drives third module and displaces outward along second module, make the reverse buckle structure between core mold and bottom die demolding, the secondary linkage mechanism of the demolding assembly realizes double reverse buckle structure product demolding, can effectively guarantee product quality and performance.

Description

TECHNICAL FIELD

[0001] The present application relates to injection mold technical field, specifically to a double reverse buckle demolding structure. BACKGROUND

[0002] The injection molding machine is the main molding equipment for making various shapes of plastic products by using thermoplastic or thermosetting material, and its working principle is similar to that of the syringe for injection. It is by means of the thrust of the screw to inject the plastic in molten state into the closed mold cavity, and the product is obtained after solidification and setting. Injection molding can customize the mold according to the product, and can realize relatively complex structure, strong flexibility and high processing efficiency. The conventional injection mold is generally composed of an upper mold and a lower mold, and the upper mold and the lower mold are matched to form a cavity between them. Some products have curved surface structure, and the cavity needs to be set with reverse buckle. There are various concave-convex structures on the surface of the product. The current injection mold cannot smoothly demold the injection molded product with double reverse buckle structure, so the helmet plastic trim production manufacturers have to give up the product with double reverse buckle structure and choose the product with single reverse buckle, which limits the performance improvement of some helmet plastic trim. Or use the ejector plate to forcibly demold, which can easily damage the product and even cause the product to deform, resulting in a decline in product quality and affecting the performance of the plastic trim. Therefore, the prior art still needs to be improved and developed. SUMMARY

[0003] The purpose of the present application is to overcome the defects and shortcomings of the prior art, and to provide a double reverse buckle demolding structure with reasonable structure and good demolding effect.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] The double reverse buckle demolding structure comprises a base and a demolding assembly, the base is provided with a core mold, one side of the base is provided with an opening, and the demolding assembly is movably arranged at the opening of the base; the demolding assembly comprises a first module, a second module, a third module and a bottom mold, the bottom mold is movably arranged in the opening of the base, and the second module is arranged above the bottom mold; the first module is arranged outside the base and is fixedly connected with the bottom mold and the second module respectively; the third module is arranged inside the second module and is connected with the second module, the third module, the bottom mold and the core mold form a cavity, and a reverse buckle structure is arranged between the bottom mold and the core mold.

[0006] According to the above scheme, the opening of the base is provided with a guide rod, the guide rod is arranged at an angle with the vertical direction, and the lower end of the guide rod is fixedly connected with the base, the bottom mold is provided with a through hole, and the upper end of the guide rod is arranged in the through hole, so that the bottom mold can move up and down along the guide rod.

[0007] According to the above scheme, the first module is provided with a cylinder, the output end of the cylinder is fixedly connected with the third module, and a reverse buckle structure is arranged between the third module and the bottom die.

[0008] According to the above scheme, a guide structure is arranged between the second module and the third module, the third module can be transversely translated on the second module through the guide structure, and a reset spring is arranged between the second module and the third module.

[0009] According to the above scheme, the core die is provided with two positioning blocks, the two positioning blocks are arranged on the two sides of the opening of the base, the third module abuts against the two positioning blocks when the demolding assembly is closed, and the inner side surface of the third module is tangent to the two positioning blocks.

[0010] According to the above scheme, the core die is fixedly connected with the base, and an injection molding channel is arranged between the base and the core die, and the injection molding channel communicates with the inner cavity of the core die.

[0011] The present application has the advantages that: the structure is reasonable, the demolding assembly and the core die on the base form a molding cavity, when the mold is opened, the first module drives the bottom die and the second module to displace outward along the guide rod, so that the reverse buckle structure between the bottom die and the core die is demolded, then the cylinder drives the third module to displace outward along the second module, so that the reverse buckle structure between the core die and the bottom die is demolded, the secondary linkage mechanism of the demolding assembly realizes the demolding of the double reverse buckle structure product, and the quality and performance of the product can be effectively guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a schematic diagram of the overall structure of the present application;

[0013] Fig. 2 It is a schematic diagram of the top view structure of the present application;

[0014] Fig. 3 It is a schematic diagram of the side view structure of the present application.

[0015] In the figure:

[0016] 1, base; 2, first module; 3, bottom die; 11, core die; 12, guide rod; 13, positioning block; 14, injection molding channel; 21, second module; 22, third module; 23, cylinder; 24, reset spring; 31, through hole. DETAILED DESCRIPTION

[0017] The technical scheme of the present application will be described below in combination with the drawings and examples.

[0018] As Figs. 1-3As shown, the double-inverted-docking demolding structure comprises a base 1 and a demolding assembly, the base 1 is provided with a core mold 11, one side of the base 1 is provided with an opening, and the demolding assembly is movably arranged at the opening of the base 1; the demolding assembly comprises a first module 2, a second module 21, a third module 22 and a bottom mold 3, the bottom mold 3 is movably arranged in the opening of the base 1, and the second module 21 is arranged above the bottom mold 3; the first module 2 is arranged outside the base 1, and the first module 2 is fixedly connected with the bottom mold 3 and the second module 21 respectively; the third module 22 is arranged inside the second module 21 and is connected with the second module 21, the third module 22, the bottom mold 3 and the core mold 11 form a cavity, and an inverted docking structure is arranged between the bottom mold 3 and the core mold 11. The base 1 is used as the main structure, the core mold 11 is arranged thereon, and the demolding structure is arranged at the opening of the base 1 and forms the lower half of the cavity together with the core mold 11. Correspondingly, an upper mold assembly is also included, the upper mold assembly has the upper half of the cavity, and the upper mold assembly forms the cavity together with the core mold 11 and the demolding assembly on the base 1 after clamping. After injection molding is completed, the upper mold assembly is separated from the cavity, at this time, the demolding structure is driven by an external driving source, the first module 2 drives the bottom mold 3 to move away from the core mold 11, so that the bottom mold 3 is separated from the core mold 11, and the inverted docking structure between the two is prevented from being hooked on the bottom mold 3.

[0019] Further, the first module 2 is provided with a cylinder 23, the output end of the cylinder 23 is fixedly connected with the third module 22, and an inverted docking structure is arranged between the third module 22 and the bottom mold 3. The cylinder 23 drives the third module 22 to move away from the core mold 11, so that the third module 22 is separated from the bottom mold 3, and the inverted docking structure between the two is prevented from being hooked on the third module 22. Through the two-stage linkage mode of the third module 22 and the bottom mold 3, the double-inverted-docking injection molded product can be smoothly demolded, and the product quality and performance are ensured.

[0020] The opening of the base 1 is provided with a guide rod 12, the guide rod 12 is arranged at an angle with the vertical direction, the lower end of the guide rod 12 is fixedly connected with the base 1, the bottom mold 3 is provided with a through hole 31, and the upper end of the guide rod 12 is arranged in the through hole 31, so that the bottom mold 3 can move up and down along the guide rod 12. The guide rod 12 has a certain inclination, when the first module 2 drives the bottom mold 3 to move away from the core mold 11, the bottom mold 3 can be slightly displaced upward, and the displacement amount can ensure that the inverted docking structure between the bottom mold 3 and the core mold 11 is more smoothly demolded.

[0021] The guiding structure is provided between the second module 21 and the third module 22, the third module 22 can be transversely translated on the second module 21 through the guiding structure, and the reset spring 24 is provided between the second module 21 and the third module 22. The guiding structure can adopt the cooperation of a notch and a sliding block, preferably, the guiding structure adopts the cooperation of a trapezoidal block and a dovetail groove, and the guiding structure is arranged along the transverse direction, so that the third module 22 can be transversely translated on the second module 21.

[0022] The core mold 11 is provided with two positioning blocks 13, the two positioning blocks 13 are respectively arranged on the two sides of the opening of the base 1, the third module 22 abuts against the two positioning blocks 13 when the demolding assembly is closed, and the inner side surface of the third module 22 is tangent to the two positioning blocks 13. The positioning blocks 13 are used for limiting the position of the third module 22, when the demolding assembly is closed, the demolding assembly moves towards the core mold 11, after the bottom mold 3 abuts against the core mold 11, the third module 22 abuts against the positioning hole 13, the third module 22, the core mold 11 and the positioning block 13 all serve as a part of a cavity, and the closing precision can be ensured.

[0023] The core mold 11 is fixedly connected with the base 1, the injection channel 14 is provided between the base 1 and the core mold 11, and the injection channel 14 communicates with the inner cavity of the core mold 11.

[0024] The above is only the preferred embodiment of the present application, therefore, equivalent changes or modifications made according to the structure, features and principles described in the patent application scope of the present application are included in the patent application scope of the present application.

Claims

1. A double-inverted demolding structure, comprising a base (1) and a demolding assembly, wherein a core mold (11) is provided on the base (1), and an opening is provided on one side of the base (1), and the demolding assembly is movably disposed at the opening of the base (1); characterized in that: The demolding assembly comprises a first module (2), a second module (21), a third module (22) and a bottom die (3), the bottom die (3) is movably arranged in the opening of the base (1), and the second module (21) is arranged above the bottom die (3); the first module (2) is arranged outside the base (1) and is fixedly connected with the bottom die (3) and the second module (21) respectively; the third module (22) is arranged inside the second module (21) and is connected with the second module (21) in cooperation, the third module (22), the bottom die (3) and the core die (11) form a cavity, and a reverse structure is arranged between the bottom die (3) and the core die (11); A guide rod (12) is arranged at the opening of the base (1), the guide rod (12) is arranged at an angle with the vertical direction, and the lower end of the guide rod (12) is fixedly connected with the base (1); a through hole (31) is arranged on the bottom die (3), and the upper end of the guide rod (12) is arranged in the through hole (31), so that the bottom die (3) can move up and down along the guide rod (12); A cylinder (23) is arranged on the first module (2), the output end of the cylinder (23) is fixedly connected with the third module (22), and a reverse structure is arranged between the third module (22) and the core die (11).

2. The dual undercut demolding structure of claim 1, wherein: A guide structure is arranged between the second module (21) and the third module (22), the third module (22) can horizontally translate on the second module (21) through the guide structure, and a reset spring (24) is arranged between the second module (21) and the third module (22).

3. The dual undercut demolding structure of claim 1, wherein: Two positioning blocks (13) are arranged on the core die (11), and the two positioning blocks (13) are arranged on both sides of the opening of the base (1); when the demolding assembly is closed, the third module (22) abuts against the two positioning blocks (13) respectively, and the inner side surface of the third module (22) is tangent to the two positioning blocks (13).

4. The dual undercut demolding structure of claim 1, wherein: The core die (11) is fixedly connected with the base (1), an injection channel (14) is arranged between the base (1) and the core die (11), and the injection channel (14) communicates with the inner cavity of the core die (11).

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