Structure for improving silver wire reduction and injection molding pressure reduction of penetrating mask

Abstract

The utility model provides a structure for improving silver wire reduction and injection molding pressure reduction of a penetrating mask, and belongs to the technical field of automobile lamp molds. The structure comprises a first hot runner, a second hot runner and a third hot runner, the first hot runner, the second hot runner and the third hot runner are all arranged on an injection mold, and when the structure is used, the injection pressure is reduced to 110 bar from 180 bar under the action of the second hot runner, so that the water filament can be effectively improved, and the service life of the injection mold is prolonged. According to the injection molding structure for improving the penetrating mask silver wire reduction, the number of fed glue is reduced from seven to three, a first hot runner and a third hot runner are of a valve needle type glue feeding structure, a second hot runner is of an open type glue feeding structure, and the injection molding quality is improved. The defect rate of silver wires and cold materials can be effectively reduced, the injection molding pressure of the mold is reduced, and the mold cost is reduced while qualified products are guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle lamp moulds, and in particular to a structure for improving the silver wire penetration through a face mask and reducing injection pressure. Background Art

[0002] At present, in the automotive lighting industry, the conventional design of headlights has not changed much. With the progress of the times and the broadening of vision, the structure of headlights has become more and more complex, and the appearance requirements have become higher and higher. Conventional technical methods can no longer meet the development and mass production of existing products; the existing two-color mask made of PC material with a length of 2080mm, using mold flow software simulation analysis and past experience, needs to set 7 gates so that the injection pressure can be within the standard range and meet the theoretical filling requirements; but the more gates, the smaller the appearance defects and process debugging window, the higher the defective rate of water silk, yellowing, cold material, etc., and the delivery pressure is increased; therefore, a structure for reducing the injection pressure to improve the silver thread penetrating the mask is proposed. Utility Model Content

[0003] In order to make up for the above shortcomings, the present application provides a structure for improving the silver thread through the mask and reducing the injection pressure, aiming to improve the current automotive headlight industry. The conventional design and shape of the headlights have not changed much. With the progress of the times and the broadening of vision, the shape structure of the headlights has become more and more complex, and the appearance requirements have become higher and higher. Conventional technical methods can no longer meet the development and mass production of existing products; the existing two-color mask made of PC material with a length of 2080mm, using mold flow software simulation analysis and past experience, needs to set 7 gates so that the injection pressure can be within the standard range and meet the theoretical filling requirements; but the more gates, the smaller the appearance defects and process debugging window, the higher the defect rate of water threads, yellowing, cold materials, etc., and the delivery pressure is increased.

[0004] This application is implemented as follows:

[0005] The present application provides a structure for improving the silver wire penetration through the mask and reducing the injection pressure, comprising a first hot runner, a second hot runner and a third hot runner, wherein the first hot runner, the second hot runner and the third hot runner are all arranged on the injection mold, and the first hot runner, the second hot runner and the third hot runner are arranged for producing products.

[0006] In one embodiment of the present application, the first hot runner and the third hot runner are valve needle type injection structures.

[0007] In one embodiment of the present application, the second hot runner is an open glue-feeding structure.

[0008] In one embodiment of the present application, a fixed water jacket is further included, wherein the fixed water jacket is mounted on the second hot runner, and the fixed water jacket and the mold form a water path to optimize the shear heat generated during the injection molding process of the second hot runner.

[0009] In an embodiment of the present application, it further includes a circular ring and a locking piece, wherein the locking piece thread penetrates through the circular ring, a plurality of the locking pieces are provided, and the circular ring is pressed against the fixed water jacket through the locking piece.

[0010] In one embodiment of the present application, an invisible groove is provided on the circular ring, and the locking member is arranged in the invisible groove. The setting of the invisible groove realizes the positioning of the fixed water jacket.

[0011] The beneficial effects of the present application are as follows: the present application obtains a structure for improving the silver wire penetration through the mask and reducing the injection pressure through the above-mentioned design. When in use, in order to ensure that there is no weld line through the surface of the mask, the first hot runner, the second hot runner and the third hot runner are used to inject glue in sequence. This structure can control the glue discharge time and the closing time. The injection pressure of the first hot runner and the third hot runner reaches 180bar, and the gate of the second hot runner is changed to an open type. The gates on both sides retain the valve needle structure (which can control the glue discharge time and the closing time). Under the action of the hot runner, the injection pressure is reduced from 180bar to 110bar, which can effectively improve the problems of water threads, cold materials and yellowing. The qualified rate of masks can reach more than 95%. The structure used to improve the silver threads running through the mask and reduce the injection pressure reduces the number of injections from seven to three. The first hot runner and the third hot runner adopt a valve needle injection structure, and the second hot runner is an open injection structure, which can effectively reduce the defective rate of silver threads and cold materials and reduce the injection pressure of the mold, while ensuring qualified products, reducing mold costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a three-dimensional structural schematic diagram of a structure for improving the silver reduction wire penetrating the mask and reducing the injection pressure provided by the embodiment of the present application;

[0014] Figure 2 A relationship diagram between the first hot runner, the second hot runner and the third hot runner provided in an embodiment of the present application;

[0015] Figure 3A front view of a structure for improving the silver wire penetration through the mask and reducing the injection molding pressure provided in an embodiment of the present application.

[0016] In the figure: 110 - first hot runner; 120 - second hot runner; 130 - third hot runner; 140 - ring; 150 - locking piece; 160 - invisible groove; 170 - product; 180 - fixed water jacket. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] Example

[0019] See also Figure 1 - Figure 3 , the present application provides a technical solution: a structure for improving the silver thread penetrating the mask and reducing the injection pressure, comprising a first hot runner 110, a second hot runner 120 and a third hot runner 130, the first hot runner 110, the second hot runner 120 and the third hot runner 130 are all arranged on the injection mold, the first hot runner 110, the second hot runner 120 and the third hot runner 130 are arranged to produce the product 170, the first hot runner 110 and the third hot runner 130 are valve needle type injection structure, this structure can control the glue discharge time and the closing time, the injection pressure of this structure reaches 180bar, the second hot runner 120 is an open injection structure, with the valve needle type injection structure of the first hot runner 110 and the third hot runner 130, the injection pressure is reduced from 180bar to 110bar, which can effectively improve the problems of water thread, cold material and yellowing, and the qualified rate of the mask can reach more than 95%;

[0020] It also includes a fixed water jacket 180, which is sleeved on the second hot runner 120. The fixed water jacket 180 and the mold form a water channel to optimize the shear heat generated during the injection molding of the second hot runner 120. It also includes a ring 140 and a locking member 150. The locking member 150 is threaded through the ring 140. There are multiple locking members 150. The ring 140 is pressed against the fixed water jacket 180 by the locking member 150. An invisible groove 160 is opened on the ring 140. The locking member 150 is arranged in the invisible groove 160. The setting of the invisible groove 160 realizes the positioning of the fixed water jacket 180. The locking member 150 in this embodiment is a bolt.

[0021] Specifically, the working principle of the structure for improving the silver thread through the mask and reducing the injection pressure is as follows: when in use, in order to ensure that there is no weld line through the surface of the mask, the first hot runner 110, the second hot runner 120 and the third hot runner 130 are used to inject glue in sequence. This structure can control the glue discharge time and the closing time. The injection pressure of the first hot runner 110 and the third hot runner 130 reaches 180bar, and the gate of the second hot runner 120 is changed to an open type, and the gates on both sides retain the valve needle structure (which can control the glue discharge time and the closing time). 20, the injection pressure is reduced from 180bar to 110bar, which can effectively improve the problems of water threads, cold materials and yellowing. The qualified rate of masks can reach more than 95%. The structure for reducing the injection pressure and reducing the silver threads running through the mask reduces the number of injections from seven to three. The first hot runner 110 and the third hot runner 130 adopt a valve needle injection structure, and the second hot runner 120 is an open injection structure, which can effectively reduce the defective rate of silver threads and cold materials and reduce the injection pressure of the mold, while ensuring qualified products, reducing mold costs.

[0022] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A structure for improving the silver thread penetration through the mask and reducing the injection pressure, characterized in that: The invention comprises a first hot runner (110), a second hot runner (120) and a third hot runner (130), wherein the first hot runner (110), the second hot runner (120) and the third hot runner (130) are all arranged on an injection mold, and the first hot runner (110), the second hot runner (120) and the third hot runner (130) are arranged to produce a product (170), the first hot runner (110) and the third hot runner (130) are valve needle type injection structures, and the second hot runner (120) is an open injection structure.

2. A structure for improving the silver thread penetration through the mask and reducing the injection molding pressure according to claim 1, characterized in that: It also comprises a fixed water jacket (180), wherein the fixed water jacket (180) is sleeved on the second hot runner (120), and the fixed water jacket (180) and the mold form a water channel to optimize the shear heat generated during the injection molding process of the second hot runner (120).

3. A structure for improving the silver thread penetration through the mask and reducing the injection molding pressure according to claim 2, characterized in that: It also includes a circular ring (140) and a locking piece (150), wherein the locking piece (150) is threadedly passed through the circular ring (140), a plurality of the locking pieces (150) are provided, and the circular ring (140) is pressed against the fixed water jacket (180) through the locking piece (150).

4. A structure for improving the silver thread penetration through the mask and reducing the injection molding pressure according to claim 3, characterized in that: The circular ring (140) is provided with an invisible groove (160), and the locking member (150) is arranged in the invisible groove (160). The setting of the invisible groove (160) enables the positioning of the fixed water jacket (180).

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