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CN-121989418-A - Injection molding integrated structure for automobile display screen shell

CN121989418ACN 121989418 ACN121989418 ACN 121989418ACN-121989418-A

Abstract

The invention discloses an injection molding integrated structure of an automobile display screen shell, which relates to the technical field of injection molding of automobile display screen shells and comprises a front mold core, a rear mold core and a mold core, wherein the rear mold core and the mold core are positioned above the front mold core, the mold core is fixed at the bottom of the rear mold core, a mold core ring is embedded at the outer edge of the mold core and is inserted into the bottom side wall of the rear mold core, a heat conducting piece is arranged in the bottom side of the rear mold core and is positioned at the top of the mold core ring, and a glue injection piece is arranged in the rear mold core and is positioned at the side of the mold core ring. In the injection molding process of the automobile display screen shell, the rear cover and the rubber pad can be respectively molded by a single mold in the injection molding production of the rear cover, and the injection molding position of the rubber pad can be preheated by utilizing the waste heat generated in the injection molding process of the rear cover, so that the use cost and the production investment in the production of the automobile display screen shell are achieved, the energy consumption in the production process is reduced, and the production cost of the whole automobile display screen shell is reduced.

Inventors

  • LIU XIAOBIN
  • LI YUN
  • WANG TING
  • YUE CHUNLI

Assignees

  • 杰成工业（惠州）有限公司

Dates

Publication Date
20260508
Application Date
20260410

Claims (10)

  1. 1. An injection molding integrated structure of an automobile display screen shell is characterized by comprising, A front mould core (1), a rear mould core (2) and a mould core (3) which are positioned above the front mould core (1), The core (3) is fixed at the bottom of the rear mould core (2), A core ring (4) embedded in the outer edge of the core (3) and inserted into the bottom side wall of the rear mold core (2), A heat conducting piece (5) which is arranged in the bottom side of the rear mould core (2) and is positioned at the top of the mould core ring (4), The glue injection piece (6) is arranged in the rear mould core (2) and positioned at the side of the mould core ring (4), And the cooling piece (7) is arranged in the core ring (4) and is used for cooling the injection molding workpiece.
  2. 2. The injection molding integrated structure of the automobile display screen shell according to claim 1, wherein the heat conducting piece (5) comprises a heat conducting cavity (8), the heat conducting cavity (8) is formed in the bottom of the rear mold core (2), the top of the mold core ring (4) is inserted into the heat conducting cavity (8), the heat conducting ring (9) is connected in the heat conducting cavity (8) in a sliding mode, and the bottom side wall of the heat conducting ring (9) is attached to the top side wall of the mold core ring (4).
  3. 3. The injection molding integrated structure of the automobile display screen shell according to claim 2, wherein a control cavity (10) is formed in the bottom of the heat conducting ring (9), a thermosensitive spring (11) is fixed on the inner top side wall of the control cavity (10), and the bottom end of the thermosensitive spring (11) is fixedly connected with the top side wall of the core ring (4).
  4. 4. The injection molding integrated structure of the automobile display screen shell according to claim 3, wherein a reset cavity (12) is formed in the top side wall of the heat conducting ring (9), a biasing spring (13) is fixed on the inner bottom side wall of the reset cavity (12), and the top end of the biasing spring (13) is fixedly connected with the top side wall of the heat conducting cavity (8).
  5. 5. The injection molding integrated structure of the automobile display screen shell according to claim 4, wherein the glue injection piece (6) comprises a glue injection runner pipe (14), the glue injection runner pipe (14) is fixed in the rear mold core (2), the bottom is arranged in a J shape, a flow guide runner pipe (15) is slidably connected to a bottom end outlet of the glue injection runner pipe (14), the flow guide runner pipe (15) is arranged in an inverted J shape, the bottom end of the flow guide runner pipe (15) penetrates through the heat conducting ring (9) and is fixedly connected with the core ring (4), a limiting rod (16) is fixedly connected to the inner bottom side wall of the glue injection runner pipe (14), the top end of the flow guide runner pipe (15) is arranged in a closed mode, and the top end of the limiting rod (16) is inserted into the flow guide runner pipe (15).
  6. 6. The injection molding integrated structure of the automobile display screen shell according to claim 5, wherein an injection molding opening (17) is formed in the bottom of the core ring (4), two sliding grooves (18) are formed in the side wall of the injection molding opening (17) relatively, sealing sheets (19) are connected in the two sliding grooves (18) in a sliding mode, and a V-shaped notch is formed in the top of one side, where the two sealing sheets (19) are attached to each other.
  7. 7. The injection molding integrated structure of the automobile display screen shell according to claim 6, wherein a guide rod (20) is fixedly connected to the inner top side wall of the guide flow channel pipe (15), a flaring head (21) is fixedly connected to the bottom end of the guide rod (20), a guide pipe (22) is slidably connected to the bottom end of the flaring head (21), the bottom end of the guide pipe (22) is arranged in a V shape, and the bottom end of the guide pipe (22) is attached to a V-shaped notch formed by two sealing sheets (19).
  8. 8. The injection molding integrated structure of the automobile display screen shell according to claim 7, wherein the cooling piece (7) comprises a cooling runner (23), the cooling runner (23) is arranged in the side wall of the core ring (4), the inner bottom side wall of the cooling runner (23) is obliquely arranged, a cooling inlet (24) and a cooling outlet (25) which are communicated with the cooling runner (23) are respectively arranged on the side wall of the core ring (4), and an injection port (26) and an exhaust port (27) which are communicated with the cooling inlet (24) and the cooling outlet (25) are respectively arranged on the side wall of the rear mold core (2).
  9. 9. An integrally injection molded structure of an automotive display housing according to claim 8, wherein a cavity cylinder (28) is fixedly connected to the inner side wall of the cooling flow passage (23), a blocking plug (29) is slidably connected to the cavity cylinder (28), and the end portion of the blocking plug (29) extends into the cooling inlet (24) and is aligned with the outer side wall of the core ring (4).
  10. 10. The injection molding integrated structure of the automobile display screen shell according to claim 9, wherein the inner side wall of the cooling flow channel (23) is fixedly connected with two guide rods (30) at the position of the cooling outlet (25), the two guide rods (30) are connected with magnetic blocks (31) in a sliding manner, the magnetic blocks (31) are connected with the cooling outlet (25) in a sliding manner, a reset spring (32) is fixedly connected between the magnetic blocks (31) and the inner side wall of the cooling flow channel (23), and one end, close to a core ring (4) of the magnetic blocks (31), of the discharge port (27) is fixedly connected with a repulsive magnetic strip (33).

Description

Injection molding integrated structure for automobile display screen shell Technical Field The invention relates to the technical field of injection molding of automobile display screen shells, in particular to an injection molding integrated structure of an automobile display screen shell. Background In the automobile, the display screen is an indispensable device, the application is wide, such as reversing, observing, navigation, music listening and other functions, the outer shell mainly takes injection molding as a main part in the production process, the display screen can be rapidly molded, in order to enable the front cover and the rear cover to be closed and sealed, the TPE rubber cushion is embedded into the inner edge of the cover of the rear cover, in order to improve the production efficiency, the double-color injection method is used for injection molding, namely after the injection molding of the rear cover of the PC/ABS part is finished, the die set is turned over, then the TPE is injected, the whole is formed after cooling, the sealing performance is improved, and the outer shell of the PC/ABS can be well attached to the rubber cushion made of TPE material by primary injection molding and secondary injection molding. However, in practical application, the problems which are not solved yet exist are the following common problems of an injection molding integrated structure of an automobile display screen shell, wherein in the injection molding mode, two groups of molds are needed in the use process, so that the production cost of the automobile display screen shell is improved, in addition, in the injection molding process, the two groups of molds are needed to be cooled after injection molding, the energy consumption needed in the preheating work is improved, and the production cost is further improved. Disclosure of Invention This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application. The present invention has been made in view of the above and/or problems associated with the injection molded integral construction of existing automotive display housings. Therefore, the invention aims to solve the problem of production cost increase caused by sectional injection molding of two groups of molds and preheating after cooling. In order to solve the technical problems, the invention provides the technical scheme that the injection molding integrated structure of the automobile display screen shell comprises a front mold core, a rear mold core and a mold core, wherein the rear mold core and the mold core are arranged above the front mold core, the mold core is fixed at the bottom of the rear mold core, the mold core ring is embedded into the outer edge of the mold core and inserted into the bottom side wall of the rear mold core, the heat conducting piece is arranged in the bottom side of the rear mold core and positioned at the top of the mold core ring, the glue injection piece is arranged in the rear mold core and positioned at the side of the mold core ring, and the cooling piece is arranged in the mold core ring and is used for cooling an injection molding workpiece. The heat conducting piece comprises a heat conducting cavity, the heat conducting cavity is formed at the bottom of the rear mold core, the top of the mold core ring is inserted into the heat conducting cavity, the heat conducting ring is connected in a sliding mode in the heat conducting cavity, and the bottom side wall of the heat conducting ring is attached to the top side wall of the mold core ring. As a preferable scheme of the injection molding integrated structure of the automobile display screen shell, a control cavity is formed in the bottom of the heat conducting ring, a heat-sensitive spring is fixed on the inner top side wall of the control cavity, and the bottom end of the heat-sensitive spring is fixedly connected with the top side wall of the core ring. As a preferable scheme of the injection molding integrated structure of the automobile display screen shell, the top side wall of the heat conducting ring is provided with a reset cavity, the inner bottom side wall of the reset cavity is fixedly provided with a biasing spring, and the top end of the biasing spring is fixedly connected with the top side wall of the heat conducting cavity. The invention relates to an injection molding integrated structure of an automobile display screen shell, which is characterized in that the injection molding integrated structure comprises an injection runner pipe, wherein the injection runner pipe is fixed in a rear mold core, the bottom of the injection runner pipe is arranged in a J shape, a flow guide runner pipe is connected with an outlet at the b