Novel double-color mold structure

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to a novel double-color mold structure which comprises a mold base, a front mold arranged at the top of the mold base, a first movable cavity, a second movable cavity and a plurality of mold plates arranged on the mold base, a plurality of convex molds arranged on each mold base, and a first flow guide groove, a second flow guide groove and a plurality of centre holes arranged in each convex mold, a first ejector pin plate is connected in the first movable cavity in an up-down sliding mode, a plurality of first ejector pins extend upwards from the first ejector pin plate, the first ejector pins penetrate through the mold plate and are in sliding connection with the interiors of the ejector pin holes, and the tops of the first ejector pins are combined with the interiors of the ejector pin holes to form guide holes; and a second ejector plate is arranged in the second movable cavity, a plurality of second ejector pins are arranged on the second ejector plate, and the second ejector pins upwards penetrate through the mold plate to be in sliding fit with the interior of the second flow guide groove, so that respective formation of the three assemblies is achieved, and the double-color mold can also achieve the function of a three-color mold.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a novel double-color mold structure. Background Art

[0002] Two-color injection molding refers to the process of injecting two different colors and types of plastics in a certain order through a two-color injection molding machine, organically combining the two plastics into a complete product. The existing two-color molds can only realize the injection molding of two-color products. They are too targeted and have a small scope of application, which cannot meet the needs of use. Utility Model Content

[0003] The utility model aims to provide a novel two-color mold structure, aiming to solve the technical problem that the existing two-color molds in the prior art can only realize the injection molding of two-color products, are too targeted, have a small scope of application, and cannot meet the use requirements.

[0004] To achieve the above-mentioned purpose, an embodiment of the utility model provides a new type of two-color mold structure, including a mold base, a front mold is provided on the top of the mold base, the mold base is provided with a first active cavity, a second active cavity and a plurality of templates, each of the mold bases is provided with a plurality of convex molds, a first guide groove, a second guide groove and a plurality of ejector holes are provided in the convex molds, the second guide groove is arranged around the outside of the first guide groove, a first ejector plate is slidably connected up and down in the first active cavity, a plurality of first ejector pins are extended upward from the first ejector plate, the first ejector pin passes through the template and is slidably connected to the ejector hole, and the top of the first ejector pin is combined with the ejector hole to form a guide hole, a second ejector plate is provided in the second active cavity, the second ejector plate is provided with a plurality of second ejector pins, the second ejector pin passes upward through the template and is slidably matched in the second guide groove.

[0005] Preferably, slide grooves are provided on both sides of the first active cavity, a slider is slidably connected in the slide groove, a first inclined portion and a spring are provided at the front end of the slider, the first inclined portion is in sliding contact with the first ejector plate, one end of the spring is connected to the slider, and the other end is connected to the inner wall of the slide groove, a second inclined portion is provided at the end of the slider, a shovel base is slidably connected to the second inclined portion, and the top of the shovel base passes through the template and extends upward to be connected to the front template.

[0006] Preferably, a guide rod is provided on the inner side wall of the slide groove, the spring is sleeved on the guide rod, the guide rod passes through the slide block and extends outward to form a limiting portion, and the bottom of the shovel base abuts against the limiting portion.

[0007] Preferably, the slider is transversely penetrated with a through hole, the through hole includes a telescopic part and a sliding part, the diameter of the telescopic part is larger than the diameter of the sliding part, the guide rod sequentially passes through the telescopic part and the sliding part and extends outward, one end of the spring abuts against the inner wall of the telescopic part, and the other end abuts against the inner wall of the slide groove.

[0008] Preferably, a slope is provided on one side of the bottom of the shovel base, the slope is in sliding contact with the second inclined portion, the slope is inwardly recessed to form a limiting groove, and the limiting groove is slidably matched with the limiting portion.

[0009] The above one or more technical solutions in a novel two-color mold structure provided by the embodiment of the utility model have at least one of the following technical effects:

[0010] When in use, the first ejector plate is first driven upward by the driving unit to insert each first ejector pin into and completely fill the ejector pin hole, and injection molding is performed into the first guide groove through the water inlet of the mold. After accommodation in the first guide groove is completed, the first component of the product is formed. The first component forms a groove body of any shape, and the bottom wall of the groove body is penetrated downward by a plurality of holes connected with the guide groove. In the next step, the first ejector plate is driven downward by the driving unit to make each first ejector pin descend, and a guide hole is formed between the top of the first ejector pin and the ejector pin hole, and the second step of injection molding is performed, and the mold is passed through again. The water inlet of the mold is injected into the second guide groove to form a second component, the second component covers the top of the first component, and is injected into the groove body of the first component again through the water inlet to form a third component, and the injection flow passes through the hole on the bottom wall of the groove body into the guide hole to form a drainage block, and the third component is integrally formed with the drainage block. At this time, the first component, the second component, and the third component are combined with each other to form a finished product, and the second ejector plate drives the second ejector to eject the finished product when discharging; the three components are formed separately, so that the two-color mold can also realize the function of a three-color mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the overall structure of a novel dual-color mold structure provided by an embodiment of the utility model;

[0012] Figure 2 for Figure 1 A structural diagram;

[0013] Figure 3 A cross-sectional view of a novel dual-color mold structure provided by an embodiment of the utility model;

[0014] Figure 4 for Figure 3 Schematic diagram of the structure at location B.

[0015] Among them, the reference numerals in the figure are:

[0016] 1-mold base, 11-first active cavity, 12-second active cavity, 13-template, 14-slide groove, 141-slider, 142-first inclined portion, 143-spring, 144-second inclined portion, 15-shovel base, 151-inclined surface, 152-limiting groove, 16-guide rod, 161-limiting portion, 2-punch, 21-first guide groove, 22-second guide groove, 23-throw pin hole, 3-first ejector plate, 31-first ejector, 5-second ejector plate, 6-perforation, 61-telescopic portion, 62-sliding portion. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0018] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0020] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0021] In one embodiment of the present invention, Figures 1 to 4As shown, a novel two-color mold structure is provided, including a mold base 1, a front mold is provided on the top of the mold base 1, the mold base 1 is provided with a first active cavity 11, a second active cavity 12 and a plurality of templates 13, each of the mold bases 1 is provided with a plurality of punches 2, a first guide groove 21, a second guide groove 22 and a plurality of ejector holes 23 are provided in the punches 2, the second guide groove 22 is arranged around the outside of the first guide groove 21, a first ejector plate 3 is slidably connected up and down in the first active cavity 11, the first ejector plate 3 extends upward with a plurality of first ejector pins 31, the first ejector pin 31 passes through the template 13 and is slidably connected to the ejector hole 23, and the top of the first ejector pin 31 is combined with the ejector hole 23 to form a guide hole, a second ejector plate 5 is provided in the second active cavity 12, the second ejector plate 5 is provided with a plurality of second ejector pins 51, the second ejector pin 51 passes upward through the template 13 and is slidably matched in the second guide groove 22.

[0022] Furthermore, slide grooves 14 are provided on both sides of the first active cavity 11, and a slider 141 is slidably connected in the slide groove 14. The front end of the slider 141 is provided with a first inclined portion 142 and a spring 143. The first inclined portion 142 is in sliding contact with the first ejector plate 3. One end of the spring 143 is connected to the slider 141, and the other end is connected to the inner wall of the slide groove 14. A second inclined portion 144 is provided at the end of the slider 141, and a shovel base 15 is slidably connected to the second inclined portion 144. The top of the shovel base 15 passes through the template 13 and extends upward to be connected to the front mold. Specifically, the shovel base 15 is driven downward by the front mold, and the bottom of the shovel base 15 slides with the second inclined portion 144 to move the slider 141 toward the first ejector plate 3, so that the first inclined portion 142 lifts the first ejector plate 3; when the first ejector plate 3 descends, the front mold drives the shovel base 15 to rise, and under the elastic extension action of the spring 143, the slider 141 is moved in the direction away from the first ejector plate 3, and the first ejector plate 3 slides downward along the first inclined portion 142.

[0023] Furthermore, a guide rod 16 is provided on the inner side wall of the slide groove 14, and the spring 143 is sleeved on the guide rod 16. The guide rod 16 passes through the slider 141 and extends outward to form a limiting portion 161, and the bottom of the shovel base 15 abuts against the limiting portion 161. Specifically, the front mold drives the shovel base 15 to move downward, and the bottom of the shovel base 15 slides with the second inclined portion 144 to move the slider 141 along the guide rod 16 toward the direction close to the first ejector plate 3, and at the same time, the spring 143 is elastically compressed, so that the first inclined portion 142 lifts the first ejector plate 3, and finally the bottom of the shovel base 15 abuts against the limiting portion 161 of the guide rod 16 for limiting; when the first ejector plate 3 descends, the front mold drives the shovel base 15 to rise, and under the elastic extension of the spring 143, the slider 141 moves away from the first ejector plate 3, and the first ejector plate 3 slides downward along the first inclined portion 142.

[0024] Furthermore, the slider 141 is transversely penetrated with a through hole 6, the through hole 6 includes a telescopic portion 61 and a sliding portion 62, the diameter of the telescopic portion 61 is larger than the diameter of the sliding portion 62, the guide rod 16 sequentially passes through the telescopic portion 61 and the sliding portion 62 and extends outward, one end of the spring 143 abuts against the inner wall of the telescopic portion 61, and the other end abuts against the inner wall of the slide groove 14. Specifically, the shovel base 15 is driven downward by the front mold, and the bottom of the shovel base 15 slides with the second inclined portion 144 to move the slider 141 along the guide rod 16 in the direction close to the first ejector plate 3. At the same time, the spring 143 is elastically compressed into the telescopic portion 61, so that the first inclined portion 142 lifts the first ejector plate 3. During this process, the limiting portion 161 gradually passes through the sliding portion 62 and outward, and finally the bottom of the shovel base 15 is abutted against the limiting portion 161 of the guide rod 16 for limiting. When the first ejector plate 3 descends, the front mold drives the shovel base 15 to rise, and under the elastic extension action of the spring 143, the slider 141 is moved in the direction away from the first ejector plate 3, and the first ejector plate 3 slides downward along the first inclined portion 142.

[0025] Furthermore, a slope 151 is provided on one side of the bottom of the shovel base 15 , and the slope 151 is in sliding contact with the second inclined portion 144 . The slope 151 is inwardly recessed to form a limiting groove 152 , and the limiting groove 152 is slidably matched with the limiting portion 161 .

[0026] Working principle: When in use, the first ejector plate 3 is first driven upward by the driving unit, so that each first ejector 31 is inserted into and completely fills the ejector hole 23, and injection molding is performed into the first guide groove 21 through the water inlet of the mold. After the accommodation in the first guide groove 21 is completed, the first component of the product is formed. The first component forms a groove body of any shape, and the bottom wall of the groove body is penetrated downward by a plurality of holes connected to the guide groove. In the next step, the first ejector plate 3 is driven downward by the driving unit to make each first ejector 31 descend, and a guide hole is formed between the top of the first ejector 31 and the ejector hole 23, and the second step is performed. Injection molding, inject molding into the second guide groove 22 through the water inlet of the mold again to form a second component, the second component covers the top of the first component, and injection molding is performed into the groove body of the first component through the water inlet again to form a third component, and the injection flow passes through the holes in the bottom wall of the groove body into the guide hole to form a drainage block, and the third component is integrally formed with the drainage block. At this time, the first component, the second component, and the third component are combined with each other to form a finished product, and the second ejector plate 5 drives the second ejector 51 to eject the finished product during discharge; the three components are formed separately, so that the two-color mold can also realize the function of a three-color mold.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new type of two-color mold structure, characterized by: It includes a mold base, a front mold is provided on the top of the mold base, the mold base is provided with a first active cavity, a second active cavity and a plurality of templates, each of the mold bases is provided with a plurality of convex molds, a first guide groove, a second guide groove and a plurality of ejector holes are provided in the convex molds, the second guide groove is arranged around the outside of the first guide groove, a first ejector plate is slidably connected up and down in the first active cavity, a plurality of first ejector pins are extended upward from the first ejector plate, the first ejector pin passes through the template and is slidably connected to the ejector hole, and the top of the first ejector pin is combined with the ejector hole to form a guide hole, a second ejector plate is provided in the second active cavity, the second ejector plate is provided with a plurality of second ejector pins, the second ejector pins pass upward through the template and are slidably matched in the second guide groove.

2. The novel two-color mold structure according to claim 1 is characterized in that: Slide grooves are provided on both sides of the first active cavity, and a slider is slidably connected in the slide groove. A first inclined portion and a spring are provided at the front end of the slider, and the first inclined portion is in sliding contact with the first ejector plate. One end of the spring is connected to the slider, and the other end is connected to the inner wall of the slide groove. A second inclined portion is provided at the end of the slider, and a shovel base is slidably connected to the second inclined portion. The top of the shovel base passes through the template and extends upward to be connected to the front template.

3. The novel two-color mold structure according to claim 2 is characterized in that: A guide rod is provided on the inner side wall of the slide groove, the spring is sleeved on the guide rod, the guide rod passes through the slide block and extends outward to form a limiting portion, and the bottom of the shovel base abuts against the limiting portion.

4. The novel two-color mold structure according to claim 3 is characterized in that: The slider is transversely penetrated with a through hole, the through hole includes a telescopic part and a sliding part, the diameter of the telescopic part is larger than the diameter of the sliding part, the guide rod sequentially passes through the telescopic part and the sliding part and extends outward, one end of the spring abuts against the inner wall of the telescopic part, and the other end abuts against the inner wall of the slide groove.

5. The novel two-color mold structure according to claim 3 is characterized in that: A slope is provided on one side of the bottom of the shovel base, the slope is in sliding contact with the second inclined portion, the slope is inwardly recessed with a limiting groove, and the limiting groove is slidably matched with the limiting portion.

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