Light guide cavity injection mold in automobile HUD system

Abstract

The utility model discloses a light guide cavity injection mold in an automobile HUD (head up display) system, which comprises an upper fixing plate, a front mold plate, a rear mold plate, a bearing plate and a lower fixing plate, an upper mold core and a lower mold core are respectively arranged on the mold closing surfaces of the front mold plate and the rear mold plate, and injection molding part cavities in the shape of a light guide cavity workpiece are arranged in the upper mold core and the lower mold core; the upper fixing plate is connected above the front mold plate, the bearing plate and the lower fixing plate are sequentially connected below the rear mold plate, the upper fixing plate is provided with a pouring runner leading to an injection molding cavity, slide assemblies are arranged on the two sides of the upper mold core and the two sides of the lower mold core respectively, limit the left side and the right side of the cavity and can pop out outwards, and the upper mold core and the lower mold core are connected through the slide assemblies. Releasing limitation on the left and right side surfaces of the injection-molded part; the two sides of the injection molding part are each provided with a sheet-shaped structure inclining in the vertical direction, a front mold inclined drawer abutting against the sheet-shaped structure on one side is arranged in the upper mold core, and a rear mold inclined drawer abutting against the sheet-shaped structure on the other side is arranged in the lower mold core. The mold can solve the problem that the inner side space of the mold is insufficient, and the demolding performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile head-up display system, and particularly relates to a light guide cavity injection mold in automobile HUD system. BACKGROUND

[0002] HUD (Head Up Display, head-up display system) is a set of display system for projecting vehicle speed, fuel consumption, tire pressure and other important driving information onto the front windshield, with the increase of automobile functions, the information displayed on the instrument panel is also more and more, and it is necessary to look down at the instrument panel or the central control screen information during driving, which leads to temporary blind driving and is not conducive to driving safety, and the HUD displays information on the front windshield of the automobile, thereby avoiding such problems. The light guide cavity of the automobile HUD system is used for guiding the LED light source, so that the driver can clearly see the projected image and information, the light guide cavity is a plastic part, and is manufactured by using an injection molding process. The outer shape structure of the light guide cavity is a square shell, a connecting lug is arranged at the peripheral bending part, the connecting lug can fixedly connect the light guide cavity and the vehicle body, since the shape of the external connecting lug has a skew angle in the vertical direction, there is a certain difficulty in injection molding processing. If the designed cavity can meet the injection molding requirements of the connecting lug, a larger space in the mold core is required, a large mold needs to occupy a large injection molding machine, the production cost is increased, and the demolding difficulty after injection molding cannot be avoided. Therefore, the existing light guide cavity injection mold needs to be improved. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems and technical requirements, the utility model provides a light guide cavity injection mold in automobile HUD system, two groups of inclined core pulling mechanisms are arranged in the mold core, the problem of insufficient space in the mold can be solved, and the demolding performance is improved.

[0004] The technical scheme of the utility model is as follows: a light guide cavity injection mold in automobile HUD system, comprising an upper fixed plate, a front mold plate, a rear mold plate, a bearing plate and a lower fixed plate, the mold closing surfaces of the front mold plate and the rear mold plate are respectively provided with an upper mold core and a lower mold core, and the upper mold core and the lower mold core are provided with an injection molding part cavity with the shape of a light guide cavity workpiece; the upper fixed plate is connected above the front mold plate, the bearing plate and the lower fixed plate are sequentially connected below the rear mold plate, a pouring runner leading to the injection molding cavity is arranged on the upper fixed plate, row position assemblies are arranged on the two sides of the upper mold core and the lower mold core, the row position assemblies limit the left and right sides of the cavity, the row position assemblies can pop out outward to release the limitation on the left and right sides of the injection molding part; one sheet structure inclined in the vertical direction is arranged on the two sides of the injection molding part, a front mold inclined core pulling mechanism is arranged in the upper mold core and located on one side of the sheet structure, a rear mold inclined core pulling mechanism is arranged in the lower mold core and located on the other side of the sheet structure, the front mold inclined core pulling mechanism and the rear mold inclined core pulling mechanism can pop out to the front mold plate and the rear mold plate respectively to release the inclined surface limitation of the two sheet structures as the front mold plate and the rear mold plate are opened.

[0005] Further, the row position assembly comprises a stop block, a limiting column, a horizontal spring and an injection molding profiling block, the stop block is slidably connected at the bottom of the rear mold plate, two inclined through holes are formed in the stop block, two limiting columns connected with the front mold plate are respectively inserted into the inclined through holes, the injection molding profiling block is fixedly connected to the inner side of the stop block, the inner side of the injection molding profiling block constitutes one side of an injection molding cavity, the horizontal spring is connected between the stop block and the rear mold plate, when the limiting column is pulled out from the inclined through hole along with the upward movement of the front mold plate, the horizontal spring drives the stop block and the injection molding profiling block to slide outward, and the injection molding profiling block releases the limitation on the side surface of the injection molded part.

[0006] Further, two injection molded part cavities are arranged between the upper mold core and the lower mold core, the two injection molded part cavities are oppositely arranged, the stop block of each group of row position assemblies is connected with two injection molding profiling blocks at the same time, and the two injection molding profiling blocks limit the left side surface and the right side surface of the two injection molded parts respectively.

[0007] Further, the lower end of the front mold oblique extraction abuts against the upper surface of the sheet structure, a through hole is arranged on the upper mold core, the upper end of the front mold oblique extraction obliquely extends into the through hole, a vertical top column is connected to the lower surface of the front mold plate, the lower end of the vertical top column extends into the through hole to abut against the upper end of the front mold oblique extraction, an upper oblique extraction spring is arranged in the middle of the front mold oblique extraction, the upper end of the upper oblique extraction spring is connected with the front mold oblique extraction, and the lower end of the upper oblique extraction spring abuts against the upper mold core, when the vertical top column moves upward, the upper oblique extraction spring drives the front mold oblique extraction to slide obliquely upward, so that the lower end of the front mold oblique extraction is separated from the sheet structure.

[0008] Further, the upper end of the rear mold oblique extraction abuts against the lower surface of the sheet structure on the other side, a through hole is arranged on the lower mold core, the lower end of the rear mold oblique extraction obliquely extends into the through hole, a top supporting column is arranged through the rear mold plate, the upper end of the top supporting column extends into the through hole to abut against the lower end of the rear mold oblique extraction, a lower oblique extraction spring is also arranged in the middle of the rear mold oblique extraction, the lower end of the lower oblique extraction spring is connected with the rear mold oblique extraction, and the upper end of the lower oblique extraction spring abuts against the lower mold core, when the rear mold plate moves upward, the top supporting column moves downward through the rear mold plate, and the lower oblique extraction spring drives the rear mold oblique extraction to slide obliquely downward, so that the upper end of the rear mold oblique extraction is separated from the sheet structure on this side.

[0009] Further, the lower end of the top supporting column is connected to the bearing plate, a material ejection mechanism is arranged between the bearing plate and the lower fixed plate, and the material ejection mechanism can eject the injection molded part upward from the cavity.

[0010] The utility model discloses a beneficial effect: 1) the upper and lower of injection molding piece cavity are provided with front mould slanting extraction and rear mould slanting extraction respectively, before demoulding and ejection to injection molding piece, first extract front mould slanting extraction and rear mould slanting extraction, and the sheet structure of both sides of injection molding piece demoulding, and this can solve the problem of insufficient space between the upper die and the lower die; 2) front mould slanting extraction and rear mould slanting extraction are all inclined core pulling, compared with vertical core pulling, the size of slanting extraction is smaller, and the space occupied is also small, can correspondingly reduce the horizontal arrangement size of mould, make the overall size of mould reduce, through setting up two groups of slanting extraction, this mould can adapt to smaller machine table while guaranteeing the production capacity, reduces production cost, improves the flexibility of production; 3) set up two injection molding piece cavities between the upper die and the lower die, and one injection molding can produce two injection moldings, and the side position assembly set up at both sides can limit the side of two injection moldings simultaneously, improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The structure of the light guide cavity injection molded part processed by the light guide cavity injection mold of the utility model;

[0012] Figure 2 The sectional view structure diagram of the light guide cavity injection mold of the utility model;

[0013] Figure 3 The closing plane view of the light guide cavity injection mold of the utility model;

[0014] Figure 4 The structure diagram on the rear mold plate in the light guide cavity injection mold of the utility model;

[0015] Figure 5 The structure diagram of the upper die and the lower die and the side position assembly in the light guide cavity injection mold of the utility model;

[0016] Figure 6 The component cooperation structure diagram in the cavity in the light guide cavity injection mold of the utility model;

[0017] Figure 7 The side position assembly structure in the light guide cavity injection mold of the utility model Figure 1 ;

[0018] Figure 8 The side position assembly structure in the light guide cavity injection mold of the utility model Figure 2 ;

[0019] Figure 9 The cooperation diagram of the injection molded part and front mould slanting extraction and rear mould slanting extraction in the utility model;

[0020] The figure is marked as: the upper fixed plate 1, the pouring runner 11, the front mold plate 2, the upper mold core 21, the front mold inclined pull 22, the vertical top column 221, the upper inclined pull spring 222, the limiting column 23, the cavity 3, the injection molding piece 31, the sheet structure 311, the row position assembly 4, the stop block 41, the inclined through hole 411, the horizontal spring 42, the injection molding profiling block 43, the rear mold plate 5, the lower mold core 51, the rear mold inclined pull 52, the top support column 521, the lower inclined pull spring 522, the bearing plate 6, the lower fixed plate 7, the material ejecting mechanism 71. DETAILED DESCRIPTION

[0021] The application will be further described below in combination with the drawings and examples.

[0022] As Figures 1-9 The utility model discloses a light guide cavity injection mold in automobile HUD system, including upper fixed plate 1, front mold plate 2, rear mold plate 5, bearing plate 6 and lower fixed plate 7, and the mold face of front mold plate 2 and rear mold plate 5 is equipped with upper mold core 21 and lower mold core 51 respectively, and upper mold core 21 and lower mold core 51 are equipped with injection molding piece cavity 3 in the shape of light guide cavity workpiece, upper fixed plate 1 is connected above front mold plate 2, and bearing plate 6 and lower fixed plate 7 are sequentially connected below rear mold plate 5, and upper fixed plate 1 is equipped with pouring runner 11 leading to injection molding cavity 3, and the both sides of upper mold core 21 and lower mold core 51 are equipped with row position assembly 4 respectively, and row position assembly 4 limits the left and right sides of cavity 3, and row position assembly 4 can pop out outward, and the restriction of the left and right sides of injection molding piece 31 is released.

[0023] The row position assembly 4 includes stop block 41, limiting column 23, horizontal spring 42 and injection molding profiling block 43, stop block 41 bottom sliding connection is set up on rear mold plate 5, and two inclined through holes 411 are formed on stop block 41, and two limiting columns 23 connected with front mold plate 2 are inserted into inclined through hole 411 respectively, and injection molding profiling block 43 is fixedly connected to the inner side of stop block 41, and the inner side of injection molding profiling block 43 constitutes one side of injection molding cavity 3, and horizontal spring 42 is connected between stop block 41 and rear mold plate 5, when limiting column 23 is extracted from inclined through hole 411 upward along with front mold plate 2, horizontal spring 42 drives stop block 41 and injection molding profiling block 43 to slide outward, and injection molding profiling block 43 releases the limitation of the side of injection molding piece 31. Two injection molding piece cavities 3 are arranged between upper mold core 21 and lower mold core 51, and two injection molding piece cavities 3 are oppositely arranged, and the stop block 41 of each row position assembly 4 is connected with two injection molding profiling blocks 43 simultaneously, and two injection molding profiling blocks 43 limit the left side and the right side of two injection molding pieces 31 respectively.

[0024] The two sides of the injection molding part 31 are respectively provided with a sheet structure 311 which is inclined in the vertical direction. The upper die core 21 is provided with a front die inclined puller 22 which is arranged to abut against the sheet structure 311 on one side. The lower die core 51 is provided with a rear die inclined puller 52 which is arranged to abut against the sheet structure on the other side. The front die inclined puller 22 and the rear die inclined puller 52 can be respectively ejected from the front die plate 2 and the rear die plate 5 to release the inclined surface restriction of the two sheet structures 311 when the front die plate 2 and the rear die plate 5 are opened. The lower end of the support column 521 is connected to the bearing plate 6. The bearing plate 6 and the lower fixed plate 7 are provided with a material ejecting mechanism 71 which can eject the injection molding part 31 upward from the mold cavity 3.

[0025] The lower end of the front die inclined puller 22 abuts against the upper surface of the sheet structure 311. The upper die core 21 is provided with a through hole. The upper end of the front die inclined puller 22 is obliquely inserted into the through hole. The lower surface of the front die plate 2 is connected with a vertical support column 221. The lower end of the vertical support column 221 is inserted into the through hole to abut against the upper end of the front die inclined puller 22. The middle part of the front die inclined puller 22 is provided with an upper inclined puller spring 222. The upper end of the upper inclined puller spring 222 is connected to the front die inclined puller 22. The lower end of the upper inclined puller spring 222 abuts against the upper die core 21. When the vertical support column 221 moves upward, the upper inclined puller spring 222 drives the front die inclined puller 22 to obliquely slide upward, so that the lower end of the front die inclined puller 22 is separated from the sheet structure 311.

[0026] The upper end of the rear die inclined puller 52 abuts against the lower surface of the sheet structure 311 on the other side. The lower die core 51 is provided with a through hole. The lower end of the rear die inclined puller 52 is obliquely inserted into the through hole. The rear die plate 5 is provided with a support column 521 which is arranged to penetrate the rear die plate 5. The upper end of the support column 521 is inserted into the through hole to abut against the lower end of the rear die inclined puller 52. The middle part of the rear die inclined puller 52 is also provided with a lower inclined puller spring 522. The lower end of the lower inclined puller spring 522 is connected to the rear die inclined puller 52. The upper end of the lower inclined puller spring 522 abuts against the lower die core. When the rear die plate 5 is ejected upward, the support column 521 moves downward through the rear die plate 5. The lower inclined puller spring 522 drives the rear die inclined puller 52 to obliquely slide downward, so that the upper end of the rear die inclined puller 52 is separated from the sheet structure on this side.

[0027] The mold opening process of the utility model discloses: melt plastics are injected into the cavity 3 through the pouring runner 11, the injection molding piece 31 is demolded after cooling in the cavity, the vertical top column 221 above the front mold inclined extraction 22 moves upward, the upper inclined extraction spring 222 resets from the compressed state, the front mold inclined extraction 22 is bounced to the oblique upper side, the front mold inclined extraction 22 demolds the sheet structure on one side of the injection molding piece 31, when the front mold plate 2 opens upward, the limiting column 23 moves upward, the limiting column 23 is extracted from the inclined through hole 411 of the stopper 41, the stopper 41 gradually moves outward, when the limiting column 23 completely releases the stopper 41, the horizontal spring 42 resets from the compressed state, the horizontal spring 42 pushes out the stopper 41 and the injection molding profiling block 43 outward, the limiting on both sides of the injection molding piece 31 is released; the rear mold plate 5 and the bearing plate 6 are separated, the supporting column 521 withdraws downward, the lower inclined extraction spring 522 resets from the compressed state, the rear mold inclined extraction 52 is extracted downward, the rear mold inclined extraction 52 is separated from the sheet structure 311 on the other side of the injection molding piece 31, at this moment, the upper mold core 21 and the lower mold core 51 open, the ejector mechanism 71 ejects the injection molding piece 31 from the cavity 3 from below.

[0028] The above is only a few preferred embodiments of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of the changes and replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be the protection scope of the claims.

Claims

1. An injection mold for a light guide cavity in an automotive HUD system, characterized in that: The system includes an upper fixed plate, a front mold plate, a rear mold plate, a support plate, and a lower fixed plate. The front and rear mold plates have an upper mold core and a lower mold core on their respective mating surfaces. The upper and lower mold cores contain injection molded part cavities shaped like light guide cavities. The upper fixed plate is connected above the front mold plate, and the support plate and lower fixed plate are sequentially connected below the rear mold plate. The upper fixed plate has a gating channel leading to the injection molded cavity. Sliding components are located on both sides of the upper and lower mold cores, limiting the left and right sides of the cavity. These components can pop outwards, releasing the restriction on the left and right sides of the injection molded part. Each side of the injection molded part has a vertically inclined sheet structure. The upper mold core has a front mold slant pull that rests on one side of the sheet structure, and the lower mold core has a rear mold slant pull that rests on the other side of the sheet structure. As the front and rear mold plates open, the front and rear mold slant pulls can pop outwards from the front and rear mold plates respectively, releasing the restriction on the inclined surfaces of the two sheet structures.

2. The injection mold for the light guide cavity in the automotive HUD system according to claim 1, characterized in that: The positioning assembly includes a stop block, a limiting post, a horizontal spring, and an injection molding guide block. The bottom of the stop block is slidably connected to the rear template. Two inclined through holes are opened on the stop block. Two limiting posts connected to the front template are respectively inserted into the inclined through holes. An injection molding guide block is fixedly connected to the inner side of the stop block. The inner side of the injection molding guide block forms one side of the injection molding cavity. A horizontal spring is connected between the stop block and the rear template. When the limiting post is pulled out of the inclined through hole upward with the front template, the horizontal spring drives the stop block and the injection molding guide block to slide outward, and the injection molding guide block releases the limitation on the side of the injection molded part.

3. The injection mold for the light guide cavity in the automotive HUD system according to claim 2, characterized in that: Two injection molded part cavities are provided between the upper mold core and the lower mold core. The two injection molded part cavities are arranged opposite to each other. The stop block of each set of sliding components is connected to two injection molding contour blocks at the same time. The two injection molding contour blocks limit the left side and right side of the two injection molded parts respectively.

4. The injection mold for the light guide cavity in the automotive HUD system according to claim 3, characterized in that: The lower end of the front mold angled pull abuts against the upper surface of the sheet-like structure. The upper mold core is provided with a through hole, and the upper end of the front mold angled pull extends obliquely into the through hole. A vertical push post is connected to the lower surface of the front mold plate. The lower end of the vertical push post extends into the through hole and abuts against the upper end of the front mold angled pull. An upper angled pull spring is provided in the middle of the front mold angled pull. The upper end of the upper angled pull spring is connected to the front mold angled pull, and the lower end abuts against the upper mold core. When the vertical push post moves upward, the upper angled pull spring drives the front mold angled pull to slide obliquely upward, so that the lower end of the front mold angled pull is separated from the sheet-like structure.

5. The injection mold for the light guide cavity in the automotive HUD system according to claim 4, characterized in that: The upper end of the rear mold inclined pull abuts against the lower surface of the sheet-like structure on the other side. The lower mold core is provided with a through hole, and the lower end of the rear mold inclined pull extends obliquely into the through hole. A top support column is provided through the rear template, and the upper end of the top support column extends into the through hole and abuts against the lower end of the rear mold inclined pull. A lower inclined pull spring is also provided in the middle of the rear mold inclined pull. The lower end of the lower inclined pull spring is connected to the rear mold inclined pull, and the upper end abuts against the lower mold core. The rear template is pushed upward, and the top support column moves downward through the rear template. The lower inclined pull spring drives the rear mold inclined pull to slide obliquely downward, so that the upper end of the rear mold inclined pull is separated from the sheet-like structure on this side.

6. The injection mold for the light guide cavity in the automotive HUD system according to claim 5, characterized in that: The lower end of the top support column is connected to the support plate, and an ejector mechanism is provided between the support plate and the lower fixed plate. The ejector mechanism can eject the injection molded part upward from the cavity.

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