Colored injection molding sprue flush structure

Abstract

The utility model provides a colored injection molding sprue flush structure which comprises a mold core and a mold core arranged on the mold core, a plurality of groups of hot nozzle holes are formed in the top of the mold core in a penetrating manner, the mold core is positioned at the bottom of the mold core, the tail ends of the hot nozzle holes are respectively connected with hot runners, and the hot runners are communicated with the mold core. The hot runner is arranged around the mold core, the end face of the hot runner is flush with the mold core, and a workpiece is formed on the surface of the mold core through injection molding; and the hot nozzle hole supplies materials to the hot runner through a pipeline, and liquid flows to the surface of the workpiece along the hot runner for injection molding. According to the colored injection molding pouring gate flush structure provided by the utility model, the pouring gate of the structure is flatly attached to the surface of a product, and plastic materials are directly filled into the appearance of the product under the condition that no corner is generated, so that fluorescent powder is not accumulated due to the corner, and the problem of tiger skin lines on the appearance surface caused by the pouring gate and the corner of the product in colored injection molding is solved; and meanwhile, the glue feeding scheme simplifies the mold structure and saves the mold cost.

Description

Technical Field

[0001] The utility model relates to the technical field of mold injection gates, in particular to a color injection gate flush structure. Background Art

[0002] There are basically two types of two-color injection molds currently in use: parallel type and angle type. Patent application number 200910068018.4 discloses an angle type two-color injection mold with a hot runner system with a hot nozzle. The injection mold includes a runner stripping plate, a cavity plate and a hot runner system, characterized in that the hot runner system includes a sprue sleeve, a hot nozzle and a positioning sleeve, the hot nozzle is fixed on the runner stripping plate by the sprue sleeve and the positioning sleeve, and a positioning block is provided on the side of the cavity plate to ensure that the hot runner system does not move under high pressure during injection molding. The injection port structure of the mold is complex, and there is an angle between the sprue and the workpiece, which requires hot runner bending for casting, resulting in tiger stripes on the surface of the workpiece and affecting its performance. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The problem to be solved by the utility model is to provide a flush structure of a colored injection molding gate, so as to overcome the problem that the mold injection molding gate structure is complicated and tiger stripes are easily generated on the surface of the workpiece during injection molding in the prior art.

[0005] (II) Technical solution

[0006] In order to solve the technical problem, the utility model provides a color injection molding gate flush structure, including a mold core and a core arranged on the mold core, the top of the mold core is provided with a plurality of groups of hot nozzle holes, the core is located at the bottom of the mold core, the ends of the hot nozzle holes are respectively connected to hot runners, the hot runners are arranged around the core and the end faces are flush with the core, and a workpiece is formed by injection molding on the surface of the core; the hot nozzle holes supply material to the hot runner through a pipeline, and the liquid flows along the hot runner to the surface of the workpiece for injection molding.

[0007] In some embodiments, the hot nozzle holes include a first hot nozzle hole group, a second hot nozzle hole group, a third hot nozzle hole group and a fourth hot nozzle hole group arranged at both ends, and the hot nozzle holes vertically penetrate the hot runner at the bottom of the mold core.

[0008] In some embodiments, the hot runner at the end of the second hot nozzle hole group is located in the middle of the workpiece, the first hot nozzle hole group and the second hot nozzle hole group are respectively located on both sides of the first hot nozzle hole group, and the fourth hot nozzle hole group is located at both ends of the workpiece.

[0009] In some embodiments, one end of the hot runner is connected to the hot nozzle hole through a connecting hole, and grooves are formed on both sides of the other end. One end of the groove extends to the core through a guide surface, and the end of the guide surface is flush with the core.

[0010] In some embodiments, the hot runners corresponding to the first hot nozzle hole group, the second hot nozzle hole group, and the third hot nozzle hole group are respectively arranged in parallel on one side of the core, and the hot runners of the fourth hot nozzle hole group are symmetrically arranged at both ends of the core.

[0011] (III) Beneficial effects

[0012] The utility model provides a color injection molding gate flush structure, the gate of the structure is flush with the product surface, and the plastic material is directly filled into the product appearance without generating corners, so that the fluorescent powder is not accumulated due to the corners, and the problem of tiger stripes on the appearance surface caused by the gate and the product corners in color injection molding is solved. At the same time, this glue injection scheme simplifies the mold structure and saves mold costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a three-dimensional diagram of a workpiece with a flush structure of a colored injection molding gate according to the utility model;

[0015] Figure 2 This is a top stereogram of a color injection molding gate flush structure of the utility model;

[0016] Figure 3 This is a bottom stereogram of a color injection molding gate flush structure of the utility model;

[0017] Figure 4 The utility model is a color injection molding gate flush structure Figure 3 Enlarged view of part A in the middle;

[0018] Figure 5 It is a cross-sectional view of the third hot nozzle hole of a color injection molding gate flush structure of the utility model.

[0019] The corresponding component names of the various figure marks in the figure are: 1. mold core; 2. core; 3. workpiece; 4. first hot nozzle hole group; 5. second hot nozzle hole group; 6. third hot nozzle hole group; 7. fourth hot nozzle hole group; 8. hot runner; 9. connecting hole; 10. groove; 11. guide surface. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0021] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0022] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0024] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0025] See also Figure 1 to Figure 5The utility model provides a color injection molding gate flush structure, including a mold core 1 and a core 2 arranged on the mold core 1, a plurality of groups of hot nozzle holes are penetrated on the top of the mold core 1, the core 2 is located at the bottom of the mold core 1, the ends of the hot nozzle holes are respectively connected with hot runners 8, the hot runners 8 are arranged around the core 2 and the end faces are flush with the core 2, and the surface of the core 2 is injection molded with a workpiece 3; during processing, the hot nozzle holes supply material to the hot runner 8 through a pipeline, and the liquid flows along the hot runner 8 to the surface of the workpiece 3 for injection molding; specifically, the hot nozzle holes include a first hot nozzle hole group 4, a second hot nozzle hole group 5, a third hot nozzle hole group 6 and a fourth hot nozzle hole group 7 arranged at both ends, the hot nozzle holes vertically penetrate the mold core 1 to connect the hot runner 8 at the bottom, wherein the hot runner 8 at the end of the second hot nozzle hole group 5 is located in the middle of the workpiece 3, the first hot nozzle hole group 4 and the second hot nozzle hole group 5 are respectively located on both sides of the first hot nozzle hole group 4, and the fourth hot nozzle hole group 7 is located at both ends. 7 is located at both ends of the workpiece 3, the hot runners 8 corresponding to the first hot nozzle hole group 4, the second hot nozzle hole group 5, and the third hot nozzle hole group 6 are respectively arranged in parallel on one side of the core 2, and the hot runners 8 of the fourth hot nozzle hole group 7 are symmetrically arranged at both ends of the core 2; when working, the second hot nozzle hole group 5 first performs injection molding to the workpiece 3 from the middle through the hot runner 8, and then injects molding to its position through the first hot nozzle hole group 4 and the third hot nozzle hole group 6 on both sides, and finally injects molding to its position by the fourth hot nozzle hole group 7 at both ends, so as to realize the overall color injection molding of the workpiece surface; in this embodiment, one end of the hot runner 8 is connected to the hot nozzle hole through the connecting hole 9, and grooves 10 are formed on both sides of the other end, and one end of the groove 10 extends to the core 2 through the guide surface 11, and the end of the guide surface 11 is flush with the core 2, so that the injection coating can directly flow along the guide surface 11 horizontally to the surface of the workpiece 3 without the need for complex hot runner corner processing.

[0026] The utility model provides a color injection molding gate flush structure, the gate of the structure is flush with the product surface, and the plastic material is directly filled into the product appearance without generating corners, so that the fluorescent powder is not accumulated due to the corners, and the problem of tiger stripes on the appearance surface caused by the gate and the product corners in color injection molding is solved. At the same time, this glue injection scheme simplifies the mold structure and saves mold costs.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A color injection molding gate flush structure, comprising a mold core (1) and a core (2) arranged on the mold core (1), characterized in that: The top of the mold core (1) is provided with a plurality of hot nozzle holes, the core (2) is located at the bottom of the mold core (1), the ends of the hot nozzle holes are respectively connected to hot runners (8), the hot runners (8) are arranged around the core (2) and the end faces are flush with the core (2), and the surface of the core (2) is injection molded to form a workpiece (3); the hot nozzle holes supply material to the hot runner (8) through a pipeline, and liquid flows along the hot runner (8) to the surface of the workpiece (3) for injection molding.

2. The color injection molding gate flush structure according to claim 1, characterized in that: The hot nozzle holes include a first hot nozzle hole group (4), a second hot nozzle hole group (5), a third hot nozzle hole group (6) arranged in an oblique direction, and a fourth hot nozzle hole group (7) arranged at both ends.

3. The color injection molding gate flush structure according to claim 2, characterized in that: The hot nozzle hole vertically passes through the mold core (1) and is connected to the hot runner (8) at the bottom.

4. The color injection molding gate flush structure according to claim 2, characterized in that: The hot runner (8) at the end of the second hot nozzle hole group (5) is located in the middle of the workpiece (3), the first hot nozzle hole group (4) and the second hot nozzle hole group (5) are respectively located on both sides of the first hot nozzle hole group (4), and the fourth hot nozzle hole group (7) is located at both ends of the workpiece (3).

5. The color injection molding gate flush structure according to claim 1, characterized in that: One end of the hot runner (8) is connected to the hot nozzle hole via a connecting hole (9), and grooves (10) are formed on both sides of the other end.

6. The color injection molding gate flush structure according to claim 5, characterized in that: One end of the groove (10) extends to the core (2) through a guide surface (11), and an end of the guide surface (11) is flush with the core (2).

7. The color injection molding gate flush structure according to claim 2, characterized in that: The hot runners (8) corresponding to the first hot nozzle hole group (4), the second hot nozzle hole group (5), and the third hot nozzle hole group (6) are respectively arranged in parallel on one side of the core (2), and the hot runners (8) of the fourth hot nozzle hole group (7) are symmetrically arranged at both ends of the core (2).

Images