Bottom shell injection mold in automobile HUD system

Abstract

The utility model discloses a bottom shell injection mold in an automobile HUD system, which comprises an upper fixing plate, a front mold plate, a rear mold plate, a rear mold bearing plate and a lower fixing plate, an upper mold core and a lower mold core are respectively embedded in the opposite surfaces of the front mold plate and the rear mold plate, the upper fixing plate is connected to the top surface of the front mold plate, and the rear mold bearing plate is connected to the bottom of the rear mold plate; a groove forming face is arranged in the middle of the upper die core, a protrusion forming face is correspondingly arranged in the middle of the lower die core, a cavity is formed between the groove forming face and the protrusion forming face when the upper die core and the lower die core are in a die assembly state, and a bottom shell workpiece in an inverted buckling state is poured in the cavity. A plurality of inclined ejection blocks are arranged in the lower mold core, the inclined ejection blocks are distributed in the edge inclined area of the protruding forming face, the tops of the inclined ejection blocks are arranged in a profiling mode according to the inner contour of a bottom shell workpiece, and the inclined ejection blocks act on a plurality of inclined side walls in the bottom shell workpiece at the same time to eject the bottom shell workpiece upwards; according to the mold, a complex bottom shell workpiece can be demolded in a limited space, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to automobile heads-up display technical field, concretely relates to a bottom shell injection mold in automobile HUD system. BACKGROUND

[0002] HUD (Heads-Up Display), namely heads-up display (head-up display), it is a kind of device that projects information to the driver's field of view in front, so that the driver can obtain necessary information while keeping the line of sight in front.The structure principle of HUD is similar to slide projection, light information is sent by projector, is reflected to "projection mirror" by "reflector", again by "projection mirror" is reflected to "reflective screen (windshield)", and the human eye sees the virtual image located in front of the eye 1-10 meters, the feeling of person is that information is suspended in front of the road, HUD is widely used in aircraft and automobile.HUD system image generation unit is arranged in a cover structure, also called bottom shell, and the bottom shell is plastic injection structure, such as Figure 1 As shown in a bottom shell structure, the mouth of bottom shell is large and the sidewall and bottom surface are irregular, and the sidewall is inclined surface structure at multiple places, so the bottom shell structure adopts downward inverted-closure mode for pouring when injection molding, and the thin and large-span finished injection molding part is obtained after cooling, if the fulcrum and force of top support are uneven, the deformation condition when ejecting is prone to appear, the existing mold only carries out material ejection to inverted-closure bottom shell by vertical ejector pin, the ejector pin cannot be directly ejected on the inclined sidewall, and the demolding of inclined sidewall has great difficulty, so the existing mold design needs to be improved. CONTENT OF UTILITY MODEL

[0003] In view of the above problems and technical needs, the utility model provides a bottom shell injection mold in automobile HUD system, a plurality of groups of inclined extraction ejection pieces corresponding to the inside of bottom shell are arranged in the mold, the inclined surface of the inner wall of bottom shell can be ejection, the bottom shell can be quickly demolded without loss, the demolding precision is improved, and the production cost is reduced.

[0004] The utility model discloses a technical scheme as follows: a bottom shell injection mold in automobile HUD system, including upper fixed plate, front template, rear template, rear mould support plate and lower fixed plate, and the opposite surface of front template and rear template is embedded with upper die and lower die respectively, and upper fixed plate is connected at the top surface of front template, and rear mould support plate is connected at the bottom of rear template, and the bottom of rear mould support plate is connected with lower fixed plate, recessed profiled surface is equipped in the middle of upper die, and the middle of lower die is correspondingly provided with convex profiled surface, and the recessed profiled surface and convex profiled surface form a cavity between the closed die of upper die and lower die, and the bottom shell workpiece in the pouring inverted buckle state is in the cavity, and a plurality of inclined ejection blocks are arranged in the lower die, and the inclined ejection blocks are distributed in the edge inclined area of convex profiled surface, and the top of inclined ejection block is arranged according to the inner contour of bottom shell workpiece, and when opening the mold, the plurality of inclined ejection blocks act on the plurality of inclined side walls in bottom shell workpiece at the same time, and the bottom shell workpiece is ejected upwards.

[0005] Further, the rear mould support plate and the lower fixed plate are provided with a material pushing mechanism, the material pushing mechanism is provided with an ejection plate, the ejection plate is connected with the bottom of the inclined ejection block, and the ejection plate simultaneously ejects all the inclined ejection blocks upwards.

[0006] Further, the bottom of the inclined ejection block is movably connected with the ejection plate through the rear template and the rear mould support plate, the lower section of the inclined ejection block is a long rod, the ejection plate is provided with a fixed connecting block, the middle of the fixed connecting block is provided with a connecting hole, the bottom of the long rod is movably connected in the connecting hole, the ejection plate vertically drives the long rod to move obliquely upwards, and the inclined ejection block ejects the bottom shell workpiece.

[0007] Further, the both sides of the bottom shell workpiece are also provided with inclined connecting pieces, the connecting pieces are provided with inclined hole positions, the lower die is provided with an inclined pulling assembly for demolding the connecting pieces, the inclined pulling assembly comprises a fixed guide block, a profiled round rod and an inclined top column, the fixed guide block is connected on the surface of the lower die close to the convex profiled surface, the fixed guide block is provided with a connecting piece cavity, the fixed guide block is provided with an inclined through hole, the profiled round rod is slidably connected in the inclined through hole, the top of the profiled round rod protrudes from the connecting piece cavity, the bottom of the profiled round rod passes through the bottom of the fixed guide block obliquely downwards, the inclined top column is connected below the fixed guide block, the top of the inclined top column is provided with an inclined sliding groove, the bottom of the inclined top column is slidably connected on the inclined sliding groove, and the bottom of the inclined top column is connected on the rear mould support plate through the rear template.

[0008] Further, the rear template is also provided with a row position mechanism, the row position mechanism comprises a profiled stop block, a limiting inclined column and a spring, the bottom surface of the profiled stop block is slidably connected on the rear template, the inner side surface of the profiled stop block is abutted on the bottom shell workpiece, the profiled stop block and the lower die are provided with a horizontal spring, the profiled stop block is provided with an oblique guide hole, the limiting inclined column is connected on the bottom surface of the front template, and the limiting inclined column can be inserted into the oblique guide hole to limit the profiled stop block.

[0009] Further, a plurality of vertical ejector pins are arranged in the lower die core, and the vertical ejector pins are arranged in the middle part of the cavity.

[0010] Further, the upper die core and the lower die core are provided with cooling pipes, which can cool the cavity.

[0011] The beneficial effects of the bottom shell injection mold are as follows: 1) the plurality of inclined ejection blocks arranged in the rear die core can obliquely eject the inclined surface in the bottom shell workpiece, the ejection angle corresponds to the shape of the bottom shell, the inclined ejection blocks make the bottom shell workpiece be quickly demolded, and the thin-walled shell is prevented from being damaged and deformed; 2) the inclined extraction assembly is arranged at the bottom of the connecting piece on the two sides of the bottom shell workpiece, the inclined hole position on the connecting piece can be accurately positioned and demolded, the accuracy of the hole position is improved, the inclined surface of the inclined surface ejector pin is connected with the forming round rod through the inclined surface sliding groove, when the inclined surface ejector pin moves downward, the inclined surface ejector pin can move obliquely downward under the limiting action of the inclined surface sliding groove, and the inclined surface ejector pin is demolded from the inclined hole position, the inclined hole position is accurately ensured by skillfully avoiding the reverse buckle of the demolding direction of the inclined hole; 3) the side surface of the bottom shell workpiece is limited by the row position mechanism, the row position mechanism is released from the limitation at the same time when the upper die plate is opened, the row position mechanism is popped out outward, and the side surface of the bottom shell workpiece is demolded; 4) through the combination of the above row position mechanism, the inclined ejection block and the inclined extraction assembly, the complex bottom shell workpiece can be successfully demolded in the limited mold space, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A bottom shell workpiece structure diagram produced by the bottom shell injection mold;

[0013] Figure 2 A bottom shell injection mold overall structure diagram;

[0014] Figure 3 A bottom shell injection mold section view;

[0015] Figure 4 A component structure diagram on the rear die plate of the bottom shell injection mold;

[0016] Figure 5 A component structure diagram in the lower die core of the bottom shell injection mold;

[0017] Figure 6 A cooperation mechanism diagram of the bottom shell workpiece and the row position mechanism in the utility model;

[0018] Figure 7 A structure diagram of a convex molding surface in the utility model;

[0019] Figure 8 A bottom structure diagram of the rear die plate in the utility model;

[0020] Figure 9This is a diagram showing the arrangement of the inclined ejector blocks with the raised forming surface hidden inside the lower mold core in this utility model.

[0021] Figure 10 This is a structural diagram of the bottom shell workpiece and the inclined pulling assembly in this utility model;

[0022] Figure 11 This is a diagram showing the fit between the inclined pull-out component and the connecting piece in this utility model;

[0023] Figure 12 This is a diagram showing the internal structure of the inclined pull assembly in this utility model;

[0024] The components in the diagram are labeled as follows: Upper fixed plate 1, front template 2, upper mold core 21, groove forming surface 211, limiting inclined column 22, bottom shell workpiece 3, connecting piece 31, inclined hole position 311, rear template 4, lower mold core 41, raised forming surface 411, cooling pipe 412, inclined ejector block 5, long rod 51, inclined pull assembly 6, fixed guide block 61, forming round rod 62, inclined ejector column 63, inclined slide groove 631, rear mold support plate 7, ejector mechanism 71, ejector plate 72, fixed connecting block 721, connecting hole 722, ejector pin 723, sliding mechanism 8, forming stop block 81, lower fixed plate 9. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0026] like Figures 2-12 The image shows the bottom shell injection mold of the automotive HUD system of this utility model, including an upper fixed plate 1, a front template 2, a rear template 4, a rear mold support plate 7, and a lower fixed plate 9. An upper mold core 21 and a lower mold core 41 are respectively embedded on the opposite surfaces of the front template 2 and the rear template 4. The upper fixed plate 1 is connected to the top surface of the front template 2, and the rear mold support plate 7 is connected to the bottom of the rear template 4. The bottom of the rear mold support plate 7 is connected to the lower fixed plate 9. The upper mold core 21 has a groove forming surface 211 in the middle, and the lower mold core 41 has a corresponding protrusion forming surface 411 in the middle. When the upper mold core 21 and the lower mold core 41 are closed, a cavity is formed between the groove forming surface 211 and the protrusion forming surface 411. The bottom shell workpiece 3 in an undercut state is poured into the cavity.

[0027] The rear template 4 is also provided with a sliding mechanism 8, which includes a forming block 81, a limiting inclined column 22 and a spring. The bottom surface of the forming block 81 is slidably connected to the rear template 4, and the inner side of the forming block 81 abuts against the bottom shell workpiece 3. A horizontal spring is provided between the forming block 81 and the lower mold core 41. The forming block 81 is provided with a slanted guide hole. The upper end of the limiting inclined column 22 is connected to the bottom surface of the front template 2. The limiting inclined column 22 can be inserted into the slanted guide hole to limit the forming block 81.

[0028] The two sides of the bottom shell workpiece 3 are also provided with inclined connecting pieces 31, and the connecting pieces 31 are provided with inclined hole positions 311. The lower die core 41 is provided with an inclined extraction assembly 6 for the connecting pieces 31. The inclined extraction assembly 6 comprises a fixed guide block 61, a shaped round rod 62 and an inclined top column 63. The fixed guide block 61 is connected to the surface of the lower die core 41 adjacent to the protruding forming surface 411. The fixed guide block 61 is provided with a connecting piece cavity. The fixed guide block 61 is provided with an inclined through hole. The shaped round rod 62 is slidably connected in the inclined through hole. The shaped round rod 62 extends out of the connecting piece cavity at the top. The shaped round rod 62 passes through the bottom of the fixed guide block 61 obliquely downward at the bottom. The inclined top column 63 is connected below the fixed guide block 61. The top of the inclined top column 63 is provided with an inclined sliding groove 631. The bottom of the inclined top column 63 is slidably connected in the inclined sliding groove 631. The bottom of the inclined top column 63 passes through the back mold plate 4 and is connected to the back mold support plate 7.

[0029] The lower die core 41 is provided with a plurality of inclined ejection blocks 5. The inclined ejection blocks 5 are distributed in the edge inclined area of the protruding forming surface 411. The top of the inclined ejection block 411 is shaped according to the inner contour of the bottom shell workpiece 3. When the mold is opened, the plurality of inclined ejection blocks 5 act on the plurality of inclined side walls in the bottom shell workpiece 3 at the same time, and the bottom shell workpiece 3 is ejected upward. The back mold support plate 7 and the lower fixed plate 9 are provided with an ejection mechanism 71. The ejection mechanism 71 is provided with an ejection plate 72. The ejection plate 72 is connected to the bottom of the inclined ejection block 5. The ejection plate 72 simultaneously ejects all the inclined ejection blocks 5 upward. The bottom of the inclined ejection block 5 passes through the back mold plate 4 and the back mold support plate 7 and is movably connected to the ejection plate. The lower section of the inclined ejection block 5 is a long rod 51. The ejection plate 72 is provided with a fixed connecting block 721. The middle of the fixed connecting block 721 is provided with a connecting hole 722. The bottom of the long rod 51 is movably connected in the connecting hole 722. The ejection plate 72 drives the long rod 51 to move obliquely upward vertically upward, so that the inclined ejection block 5 ejects the bottom shell workpiece 3. The lower die core 41 is also provided with a plurality of vertical ejector pins 723. The vertical ejector pins 723 are arranged in the middle of the cavity.

[0030] The upper die core 21 and the lower die core 41 are provided with cooling pipes 412, which can cool the cavity.

[0031] The mold opening process of the utility model discloses: the inclined pulling assembly 6 carries out demolding to the connecting sheet 31, the inclined top post 63 is pulled out downward, the forming round rod 62 is limited in the fixed guide block 61 and is inclined to the angle, the inclined sliding groove 631 moves downward along with the inclined top post 63, and the forming round rod 62 is driven to retract simultaneously, the front end of the forming round rod 62 is retracted into the fixed guide block 61, and the demolding to the connecting sheet inclined hole position 311 is completed; along with the mold opening of the front mold plate 2, the front mold plate 2 drives the limiting inclined column 22 to leave the forming stopper 81, and the forming stopper 81 that is relieved from the limiting slides outward and pops out, so that the inner side of the forming stopper 81 leaves the bottom shell workpiece 3, the side demolding of the bottom shell workpiece 3 is completed, then the ejector plate 72 of the material ejecting mechanism 71 moves upward, the ejector plate 72 drives the long rod 51 to the oblique upward ejection through the fixed connecting block 721, the long rod 51 makes the inclined ejector block 5 push the bottom shell workpiece 3 upward and ejects material, and the bottom shell workpiece 3 is ejected from the lower mold core 41.

[0032] The above is only the preferable several implementation manners of the utility model, but the protection scope of the utility model does not limit to this, any skilled person in the art can easily think of the change and replacement in the technical range disclosed by the utility model, and all 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. A bottom case injection mold in an automotive HUD system, characterized by: The application relates to a die set for a bottom shell workpiece, which comprises an upper fixed plate, a front die plate, a rear die plate, a rear die plate support and a lower fixed plate, the opposite surfaces of the front die plate and the rear die plate are respectively embedded with an upper die core and a lower die core, the upper fixed plate is connected to the top surface of the front die plate, the rear die plate support is connected to the bottom of the rear die plate, and the bottom of the rear die plate support is connected to the lower fixed plate; the middle part of the upper die core is provided with a recessed forming surface, the middle part of the lower die core is correspondingly provided with a protruding forming surface, the recessed forming surface and the protruding forming surface form a forming cavity between them in the closed state of the upper die core and the lower die core, and the forming cavity is used for pouring the bottom shell workpiece in a reverse clamping state; a plurality of inclined ejection blocks are arranged in the middle part of the lower die core and are distributed in the edge inclined area of the protruding forming surface, the top part of the inclined ejection blocks is arranged according to the inner contour of the bottom shell workpiece, and the plurality of inclined ejection blocks simultaneously act on the plurality of inclined side walls in the bottom shell workpiece to eject the bottom shell workpiece upwards when the die is opened.

2. The bottom shell injection mold for an automotive HUD system of claim 1, wherein: A material-ejecting mechanism is arranged between the rear die plate support and the lower fixed plate, the material-ejecting mechanism is provided with an ejection plate, the ejection plate is connected to the bottom part of the inclined ejection blocks, and the ejection plate simultaneously ejects all the inclined ejection blocks upwards.

3. The bottom shell injection mold for an automotive HUD system of claim 2, wherein: The bottom part of the inclined ejection blocks is movably connected to the ejection plate through the rear die plate and the rear die plate support, the lower section of the inclined ejection blocks is a long rod, the ejection plate is provided with a fixed connecting block, the middle part of the fixed connecting block is provided with a connecting hole, the bottom part of the long rod is movably connected to the connecting hole, the ejection plate vertically drives the long rod to move obliquely upwards, and the inclined ejection blocks eject the bottom shell workpiece.

4. The bottom shell injection mold for an automotive HUD system of claim 3, wherein: The two sides of the bottom shell workpiece are also provided with inclined connecting pieces, the connecting pieces are provided with inclined hole positions, the lower die core is provided with an inclined pulling assembly for demolding the connecting pieces, the inclined pulling assembly comprises a fixed guide block, a forming round rod and an inclined top column, the fixed guide block is connected to the surface of the lower die core close to the protruding forming surface, the fixed guide block is provided with a connecting piece cavity, the fixed guide block is provided with an inclined through hole, the forming round rod is slidably connected to the inclined through hole, the top part of the forming round rod protrudes from the connecting piece cavity, the bottom part of the forming round rod obliquely penetrates through the bottom part of the fixed guide block, the inclined top column is connected below the fixed guide block, the top part of the inclined top column is provided with an inclined sliding groove, the bottom part of the inclined top column is slidably connected to the inclined sliding groove, and the bottom part of the inclined top column is connected to the rear die plate support through the rear die plate.

5. The bottom case injection mold for a vehicle HUD system according to claim 4, characterized by: A row position mechanism is further arranged on the rear die plate, the row position mechanism comprises a forming block, a limiting inclined column and a spring, the bottom surface of the forming block is slidably connected to the rear die plate, the inner side surface of the forming block abuts against the bottom shell workpiece, a horizontal spring is arranged between the forming block and the lower die core, the forming block is provided with an oblique guide hole, the upper end of the limiting inclined column is connected to the bottom surface of the front die plate, and the limiting inclined column can be inserted into the oblique guide hole to limit the forming block.

6. The bottom case injection mold for a vehicle HUD system according to claim 5, characterized by: A plurality of vertical ejector pins are further arranged in the lower die core and are arranged in the middle part of the forming cavity.

7. The bottom case injection mold for a vehicle HUD system of claim 6, wherein: Cooling pipes are arranged in the upper die core and the lower die core, and the cooling pipes can cool the forming cavity.

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