A demolding device for a high-yield appearance injection mold

Abstract

The utility model discloses a high yield appearance piece injection mold's demoulding device, including the product with the interference inverted buckle structure of demoulding direction, sliding module is connected along the mould opening direction sliding, and sliding module includes sliding seat and the sliding block that links with sliding seat, and the spring is set up on the sliding seat through the deformation sliding block, and is located the below of the same side of sliding block, and the forming surface of deformation sliding block is adapted with inverted buckle structure, and the lift mechanism is set up below the product, and the stretch adaptation mechanism is set up below the product. The utility model is demoulded when the product is deformed by the deformation sliding block, and the product after deforming is supported by the stretch adaptation mechanism first, and the product is ejected by the lift mechanism, and the stretch adaptation mechanism gently drops and releases the resilience of product simultaneously, thereby avoiding the generation of product scratch or glue powder, and the appearance yield is improved obviously, the structure of demoulding device is simplified, and the production rhythm is shortened, and the cooling effect is improved, and is suitable for mass production.

Description

Technical Field

[0001] This utility model relates to a demolding device, and more particularly to a demolding device for a high-yield injection mold for appearance parts. Background Technology

[0002] In the field of injection molding, exterior parts with undercut structures (such as electronic product housings and automotive interior parts) typically require a side core-pulling mechanism for demolding. Traditional core-pulling demolding methods mainly rely on the lateral movement of sliders or angled ejectors to separate the undercut parts from the mold.

[0003] However, this conventional solution has the following technical drawbacks: First, the core-pulling mechanism can cause scratches and powdering on the product: During core-pulling demolding, the undercut part of the product slides and rubs directly against the mold steel. If the mold surface is not smooth enough or poorly lubricated, it will cause scratches on the appearance surface. During the forced demolding process, excessive local stress in the plastic may cause micro-cracks, which peel off and form powdery glue powder that adheres to the product surface (especially affecting high-gloss or transparent parts). In addition, the undercut area may cause secondary damage or dimensional deviations due to elastic rebound impacting the mold or ejector pins. Second, the core-pulling mechanism increases the number of mold parts, resulting in complex structure, difficult processing, short mold life, and poor cooling efficiency. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art by providing a demolding device for injection molds of high-yield appearance parts. It has a simple structure, long service life, high product appearance yield, and convenient demolding.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a demolding device for a high-yield injection mold for exterior parts, comprising:

[0006] The product has an undercut structure that interferes with the demolding direction;

[0007] A sliding module is slidably connected along the mold opening direction. The sliding module includes a sliding base and a sliding block connected to the sliding base.

[0008] A stretchable slider is spring-loaded on the sliding seat and located below the sliding block on the same side. The forming surface of the stretchable slider is adapted to the undercut structure.

[0009] A lifting mechanism, which can be raised and lowered, is located below the product to lift the product for demolding.

[0010] The stretching adapter mechanism is vertically adjustable and located below the product to support the stretched inverted structure.

[0011] When the mold is opened, the sliding module drives the stretching and deformation slider and the sliding block to move away from the product. The spring causes the stretching and deformation slider to lag behind the movement of the sliding block, thereby stretching and deforming the undercut structure and demolding it. The stretching adapter mechanism is lifted upward to support the stretched undercut structure. The lifting mechanism lifts upward to demold the product as a whole, while the stretching adapter mechanism returns to its original position to gradually release the product's rebound force.

[0012] Furthermore, the stretching adapter mechanism includes a second driving cylinder; the second driving cylinder drives the second ejector plate to move upward, the second ejector plate is provided with a second upright rod, and the second upright rod is provided with a stretching adapter part; the stretching adapter part includes a stretching adapter block, and an upwardly extending inclined plate is provided on one side of the upper surface of the stretching adapter block.

[0013] Furthermore, the lifting mechanism includes a first driving cylinder; the first driving cylinder drives the first ejector plate to move upward; the first ejector plate is located below the second ejector plate; the first ejector plate is provided with a first upright rod that penetrates the second ejector plate; the first upright rod is provided with a top block; the top block has a protrusion adapted to the product for lifting the product upward.

[0014] Furthermore, the inclination angle of the inclined plate is 5°-10°.

[0015] Furthermore, the cross-section of the stretchable slider is L-shaped.

[0016] Furthermore, the sliding block has an arc surface adapted to the product.

[0017] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0018] This invention relates to a demolding device for high-yield appearance parts injection molds. When the product is deformed by the stretching slider and then demolded, the product is first supported by a stretching adapter mechanism, and then the product is ejected by a lifting mechanism while the stretching adapter mechanism smoothly descends to release the product's rebound force, thereby avoiding product scratches or the generation of adhesive powder and significantly improving the appearance yield. Secondly, the structure of the demolding device is simplified, the strength of the demolding device is strengthened, and the service life of the demolding device is ensured. The shorter production cycle improves the cooling effect and makes it suitable for mass production. Attached Figure Description

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0022] Figure 3 for Figure 1 A three-dimensional structural diagram from another perspective;

[0023] Figure 4 for Figure 3 Enlarged view of part B in the image;

[0024] Figure 5 This is a partial schematic diagram of a pull-deformation slider connected to a sliding seat via a spring in one embodiment of the present invention;

[0025] Figure 6 A three-dimensional structural diagram of the product;

[0026] Figure 7 This is a schematic diagram of the structure in one embodiment of the present invention, showing the connection between the stretching adapter block and the inclined plate.

[0027] Figure 8 This is a schematic diagram of the structure in one embodiment of the present invention, showing the connection between the top block and the protrusion.

[0028] The components are: 1. Product; 2. Sliding module; 3. Deformation slider; 4. Spring; 5. Lifting mechanism; 6. Tensioning adapter mechanism; 10. Inverted structure; 20. Sliding seat; 21. Sliding block; 50. First drive cylinder; 51. First ejector plate; 52. First upright; 53. Top block; 54. Protrusion; 60. Second drive cylinder; 61. Second ejector plate; 62. Second upright; 63. Tensioning adapter block; 64. Inclined plate. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0030] This invention provides a demolding device for injection molds of high-yield appearance parts, which solves the problems in the prior art where core pulling demolding causes scratches on the appearance surface of the product, and the powdery adhesive that peels off during demolding adheres to the product surface. Furthermore, the undercut area causes secondary damage or dimensional deviations due to elastic rebound impacting the mold or ejector pins.

[0031] For ease of understanding, the specific processes in the embodiments of this application are described below. Please refer to [link / reference]. Figures 1 to 3This application discloses a demolding device for a high-yield injection mold of an appearance part, comprising a product 1, a sliding module 2, a stretching and deforming slider 3, a lifting mechanism 5, and a stretching and fitting mechanism 6. In this invention, after the slider module 2 retracts, the stretching and fitting mechanism 6 first supports the deformed product, and then the lifting mechanism 5 ejects the product. Simultaneously, the stretching and fitting mechanism 6 slowly retracts, gradually and smoothly releasing the elastic force after the product's stretching and deformation, thus avoiding scratches and secondary damage to the product's appearance surface, resulting in a high product yield.

[0032] participate Figure 2 and Figure 6 The product 1 has an undercut structure 10 that interferes with the demolding direction. The sliding module 2 is slidably connected along the mold opening direction. The sliding module 2 includes a sliding seat 20 and a sliding block 21 connected to the sliding seat 20. One end of the sliding block 21 is embedded in the sliding seat 20 and moves along the mold opening direction with the sliding seat 20.

[0033] See Figure 5 and Figure 7 The stretchable slider 3 is elastically connected to the side of the sliding seat 20 by two parallel springs 4, and the forming surface of the stretchable slider 3 matches the undercut structure 10. When the stretchable slider 3 slides with the sliding seat 20, it can synchronously drive the undercut structure 10 to slide. In this embodiment, the stretchable slider 3 is located below the sliding block 21. An arc surface adapted to the undercut structure is provided above the sliding block 21, so that the sliding block 21 can better fit the product. In this way, the undercut structure 10 is located between the sliding block 21 and the stretchable slider 3.

[0034] The stretching adapter 6 is vertically adjustable below the product 10 to support the stretched inverted structure. (See reference...) Figures 1 to 4 In section 7, the stretching adapter mechanism 6 includes a second driving cylinder 60; the second driving cylinder drives the second ejector plate 61 to move upward, the second ejector plate is provided with at least two second uprights 62, the second uprights 62 are provided with stretching adapter parts, the stretching adapter parts include stretching adapter blocks 63, the upper surface of the stretching adapter block 63 is provided with an upwardly extending inclined plate 64, and the limiting part formed between the inclined plate 64 and the stretching adapter block 63 adapts to the stretched undercut structure 10. During operation, the second driving cylinder 60 drives the second ejector plate 61 to move upward, the upward movement of the second ejector plate 61 drives the stretching limiting part formed by the stretching adapter block 63 and the inclined plate 64 to rise synchronously, which is used to adapt to the formation of the stretched undercut structure 10, and plays the role of supporting the undercut structure 10 after stretching deformation.

[0035] The inclined plate 64 has an inclination angle of 5°-10°, and the angle of the inclined plate 64 is adjusted to adapt to the structure of the product.

[0036] See Figures 1 to 3 and Figure 8 The lifting mechanism 5 is vertically and flexibly positioned below the product to lift the product for demolding. The lifting mechanism 5 includes a first drive cylinder 50; the first drive cylinder 50 drives a first ejector plate 51 to move upwards, and the first ejector plate 51 is positioned below a second ejector plate 61. The first ejector plate 51 has at least two first uprights 52 passing through the second ejector plate 61, and each first upright 52 has a top block 53; the top block 53 has a protrusion 54 adapted to the product. During operation, the first drive cylinder 50 drives the top block 53 to move upwards, while the protrusion 54 is engaged inside the product, so that when the top block 53 lifts upwards, the product can be simultaneously lifted upwards.

[0037] See Figures 1 to 8 The work process is as follows:

[0038] Slider retraction demolding: Sliding block 21 and sliding seat body 20 retract synchronously to demold, while stretching and deforming slider 3 remains stationary under the action of spring 4. After sliding block 21 retracts to make room, the tension of spring reaches its limit, which drives stretching and deforming slider 3 to retract. The retraction of stretching and deforming slider 3 completes the stretching and deforming demolding of the product.

[0039] First ejection: The second drive cylinder 60 drives the second ejector plate 61, the stretching adapter block 63, and the inclined plate 64 to push upward, thereby supporting the product after stretching and deformation, thus preventing the undercut structure from springing back.

[0040] Second ejection: After the first drive cylinder 50 drives the second ejector plate 51 to rise, the first ejector plate drives the ejector block 53 to push upward. At this time, the stretching adapter block 63 and the inclined plate 4 move backward slowly in sync, so as to smoothly release the spring force of product 1 and finally complete the demolding and part removal.

[0041] In summary, this demolding device effectively prevents scratches on the product's surface and the generation of adhesive powder. It also enhances the strength of the demolding device, has a long service life, high production yield, shorter production cycle, improved cooling effect, and further improves product yield.

[0042] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A demolding device for a high yield appearance part injection mold, characterized by, include: The product has an undercut structure that interferes with the demolding direction; A sliding module is slidably connected along the mold opening direction. The sliding module includes a sliding base and a sliding block connected to the sliding base. A stretchable slider is spring-loaded on the sliding seat and located below the sliding block on the same side. The forming surface of the stretchable slider is adapted to the undercut structure. A lifting mechanism, which can be raised and lowered, is located below the product to lift the product for demolding. The stretching adapter mechanism is vertically adjustable and located below the product to support the stretched inverted structure. When the mold is opened, the sliding module drives the stretching and deformation slider and the sliding block to move away from the product. The spring causes the stretching and deformation slider to lag behind the movement of the sliding block, thereby stretching and deforming the undercut structure and demolding it. The stretching adapter mechanism is lifted upward to support the stretched undercut structure. The lifting mechanism lifts upward to demold the product as a whole, while the stretching adapter mechanism returns to its original position to gradually release the product's rebound force.

2. The high yield cosmetic part injection mold stripping apparatus of claim 1 wherein: The stretching adapter mechanism includes a second driving cylinder; the second driving cylinder drives a second ejector plate to move upward, the second ejector plate is provided with a second upright rod, and the second upright rod is provided with a stretching adapter part; the stretching adapter part includes a stretching adapter block, and an upwardly extending inclined plate is provided on one side of the upper surface of the stretching adapter block.

3. The ejector device for a high yield appearance part injection mold according to claim 2, characterized in that: The lifting mechanism includes a first driving cylinder; the first driving cylinder drives a first ejector plate to move upward; the first ejector plate is located below the second ejector plate; the first ejector plate is provided with a first upright rod that penetrates the second ejector plate; the first upright rod is provided with a top block; the top block has a protrusion adapted to the product for lifting the product upward.

4. The ejector device for a high yield appearance part injection mold according to claim 2, wherein: The inclination angle of the inclined plate is 5°-10°.

5. The demolding device for a high-yield injection mold for exterior parts as described in claim 1, characterized in that: The cross-section of the stretchable slider is L-shaped.

6. The high yield cosmetic part injection mold stripping apparatus of claim 3 wherein: The sliding block has an arc surface adapted to the product.

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