A forming die for a rear combination lamp of an automobile

Abstract

The utility model relates to a kind of automobile rear combination lamp forming die, for forming automobile light distribution mirror, including the movable die holder and fixed die holder being set in mould frame inside, movable die holder and fixed die holder moulding form mould cavity;Mould cavity is provided with the movable die kernel and fixed die kernel of moulding form cavity, the movable die kernel is moved along with movable die holder when mould opens, and automobile light distribution mirror is demoulded;Flow channel plate is provided on movable die holder, and flow channel plate is injected into cavity by the hot nozzle of inclination with injection material;The side portion of fixed die kernel is sequentially spliced with first insert core-pulling and second insert core-pulling, and the first insert core-pulling and second insert core-pulling and fixed die kernel combination form automobile light distribution mirror;First path is moved along by the first insert core-pulling relative to fixed die kernel, and second insert core-pulling is moved along second path relative to fixed die kernel;The first path and the second path are arranged at angle;First injection cavity of forming overedge is provided between the first insert core-pulling and the second insert core-pulling.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a molding mold for automotive rear combination lamps. Background Technology

[0002] A type of automotive lens such as Figure 1 As shown, it includes a transparent mirror body and an assembly edge. The transparent mirror body needs to be injection molded from transparent plastic, while the assembly edge needs to be injection molded from high-strength plastic such as PC.

[0003] Due to the unique structure and assembly position of the lens, an edge is provided on the assembly edge, and the edge is set in an inclined state. Different lenses have edge with different inclination directions. After molding, the edge will be embedded into the mold and form an undercut structure with the mold, thus hindering the demolding of the product. Therefore, it is necessary to design a mold structure to complete the edge molding while releasing the undercut structure between the edge and the mold. Utility Model Content

[0004] In order to solve the above-mentioned problems in the prior art, this utility model provides a molding die for automotive rear combination lights.

[0005] The above-mentioned problems of this utility model are solved by the following technical solution: A molding die for forming automotive rear combination lamps, used for forming automotive lens, includes a movable mold base and a fixed mold base disposed inside a mold frame, wherein the movable mold base and the fixed mold base close together to form a mold cavity; the mold cavity is provided with a movable mold core and a fixed mold core that close together to form a cavity, wherein when the mold opens, the movable mold core moves with the movable mold base to demold the automotive lens. The moving mold base is provided with a runner plate, and the runner plate injects plastic into the cavity through an inclined hot nozzle; The side of the fixed mold core is sequentially spliced ​​with a first insert core and a second insert core, and the first insert core, the second insert core and the fixed mold core are combined to form an automotive lens. The first insert core puller moves relative to the fixed mold core along a first path, and the second insert core puller moves relative to the fixed mold core along a second path; The first path and the second path are set at an angle; A first injection cavity with a molding edge is provided between the first insert core pull and the second insert core pull.

[0006] A further provision of the above technical solution is that the second insert core pulling includes a slider driven by a driving member in the horizontal direction, the slider is provided with a guide groove, the second insert is slidably disposed in the guide groove, and slides along the guide groove; The guiding direction of the guide groove and the moving direction of the slider are set on the same plane, and this plane is parallel to the edge.

[0007] A further provision of the above technical solution is that the guide groove is a T-shaped groove; the second insert is provided with a T-shaped guide rail that mates with the guide groove; The guide surface and the edging are arranged perpendicularly.

[0008] A further feature of the above technical solution is that the two end faces on the second insert used for splicing are both inclined surfaces, and the inclination angle is consistent with the edge banding.

[0009] A further provision of the above technical solution is that: a stop block is provided on the fixed mold base, and the upper end of the stop block is limitedly connected to the moving mold core; The stop block is located outside the slider and slides with the slider through an inclined surface.

[0010] A further provision of the above technical solution is that a positioning block is provided inside the fixed template, and the first insert is slidably disposed on the positioning block; Furthermore, the head of the first insert on the first insert core pull extends into the interior of the fixed mold core; The upper end of the positioning block receives the head of the first insert.

[0011] A further provision of the above technical solution is that the lower end of the fixed mold core is provided with a clearance space capable of accommodating the second insert core puller, and the second insert core puller is spliced ​​with the fixed mold core from below the fixed mold core.

[0012] A further provision of the above technical solution is that the sliding direction of the first insert core pulling is perpendicular to the driving direction of the driving component.

[0013] A further provision of the above technical solution is as follows: the flow channel plate is disposed above the moving mold base, an inclined fixed seat is embedded in the moving mold base, the hot nozzle is installed at the lower end of the fixed seat, and passes through the moving mold base and the moving mold core in sequence, extending into the cavity.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by the coordinated movement of the first and second inserts along the included angle path, and with the special guiding T-shaped guide groove and the sliding design parallel to the edge, the edge structure can be demolded without damage; the stop block and positioning block improve the mold closing stability, and the inclined hot nozzle ensures that the molten material is filled evenly, effectively solving the problem of demolding the edge undercut, and improving the product molding quality and consistency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a lens.

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the internal connection structure of this utility model.

[0018] Figure 4 A schematic diagram of the assembly structure for core pulling of the fixed mold core, the first insert, and the second insert.

[0019] Figure 5 This is an exploded structural diagram of the first insert core pulling process.

[0020] Figure 6 This is a schematic diagram of the location and structure of the splicing groove.

[0021] Figure 7 This is an exploded structural diagram of the mold core, the first insert, and the second insert.

[0022] Figure 8 This is a cross-sectional structural diagram of the present invention.

[0023] The attached diagram shows the following columns: 1. Light distribution lens; 1.1. Edge banding; a. First injection cavity; b. Splicing groove; 2. Positioning block; 2.1. Parting surface; 2.2. Stop surface; 3. Fixed seat; 4. Hot runner; 5. Stop block; 5.1. Mating surface; 100. Moving mold base; 200. Fixed mold base; 300. Runner plate; 400. Moving mold core; 500. Fixed mold core; 600. First insert core pulling; 700. Second insert core pulling; 710. Driving component; 720. Second insert; 721. T-shaped guide rail; 730. Slider; 731. Guide groove; 732. Guide surface; 733. Driving surface. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] like Figure 1-8 As shown in the figure, this embodiment discloses a molding die for automotive rear combination lamps.

[0026] The mold for molding an automotive lens 1 includes a movable mold base 100 and a fixed mold base 200 disposed inside a mold frame. The movable mold base 100 and the fixed mold base 200 close together to form a mold cavity. The mold cavity is provided with a movable mold core 400 and a fixed mold core 500 that close together to form a mold cavity. When the mold is opened, the movable mold core 400 moves with the movable mold base 100 to demold the automotive lens 1. The moving mold base 100 is provided with a runner plate 300, and the runner plate 300 injects plastic into the cavity through the inclined hot nozzle 4; The side of the fixed mold core 500 is sequentially spliced ​​with a first insert core puller 600 and a second insert core puller 700, and the first insert core puller 600, the second insert core puller 700 and the fixed mold core 500 are combined to form an automotive lens 1. The first insert core puller 600 moves relative to the fixed mold core 500 along a first path, and the second insert core puller 700 moves relative to the fixed mold core 500 along a second path. The first path and the second path are set at an angle; A first injection cavity a is provided between the first insert core pull 600 and the second insert core pull 700. The molding edge 1.1 is provided.

[0027] The above is the basic scheme of this embodiment.

[0028] like Figure 1 As shown, the main structure of the lens 1 is arranged at an angle to the edging 1.1. This angle should preferably be acute. At the same time, the main structure of the lens 1 is an irregular arc-shaped surface.

[0029] Reference Figures 2-4 As shown, the first insert core pull 600 and the second insert core pull 700 are respectively installed on the side of the fixed mold core 500. The contact surface between the second insert core pull 700 and the side of the fixed mold core 500 is seamlessly spliced, and their top planes, after alignment, together form a complete and flat parting surface 2.1. An assembly gap is provided between the first insert core pull 600 and the second insert core pull 700, and this assembly gap space forms the first injection cavity a for molding the edge-wrapping structure 1.1. The first injection cavity a and the second injection cavity located on the upper part of the parting surface 2.1 are interconnected through a runner. The two cavities are arranged at an acute angle in spatial layout, which is conducive to the smooth filling of molten plastic.

[0030] During the mold opening and demolding process, the first insert core puller 600 moves out in a horizontal straight line along the first preset path, while the second insert core puller 700 moves out in an inclined direction along the second designed path. Through the coordinated movement of these two insert core pullers, the complete and damage-free demolding of the edge-wrapping 1.1 structure is finally achieved.

[0031] To ensure the perfection of the demolding process of the edge binding 1.1 and the integrity of the product, in this embodiment, the first path is specifically set to a horizontal direction, while the second path is designed as an oblique movement trajectory with an inclination angle similar to that of the edge binding 1.1 structure. This path design can minimize the pulling and damage to the edge binding 1.1 structure during demolding. The two core-pulling movement paths are precisely calculated and coordinated to ensure both smooth demolding and the molding quality of the edge binding 1.1 structure.

[0032] In this embodiment, the first insert core-pulling 600 is a conventional inclined guide post driven core-pulling structure, and the specific driving method will not be described in detail here.

[0033] Specifically, the second insert core-pulling 700 includes a slider 730 driven by a drive member 710 in the horizontal direction. The slider 730 is provided with a guide groove 731. The second insert 720 is slidably disposed in the guide groove 731 and slides along the guide groove 731. The guiding direction of the guide groove 731 and the moving direction of the slider 730 are set on the same plane, and this plane is parallel to the edge 1.1.

[0034] Reference Figure 3 and Figure 5 As shown, the drive component 710 uses a hydraulic cylinder or servo motor as its power source. It is installed on the left or right sides or front and rear sides of the mold frame, specifically on a mounting base on the side of the mold frame. The output shaft of the drive component reciprocates along the conventional horizontal direction (X-axis direction), transmitting power to the slider 730 via a connecting mechanism. The main body of the slider 730 extends into the internal cavity of the fixed mold core 500. A straight guide groove 731 is provided on the inclined guide surface 732 at the head of the slider 730, the width of which matches the guide rail of the second insert 720.

[0035] The second insert 720 has a guide rail at its bottom that mates with the guide groove 731, and is slidably mounted on the guide surface 732 of the slider 730 via this guide rail. Under normal operating conditions, the second insert 720 can slide smoothly along the inclined trajectory of the guide groove 731. When the drive unit 710 is activated and drives the slider 730 to move linearly in the horizontal direction, the guide groove 731 and the slider 730 move synchronously. The displacement of the guide groove 731 forces the second insert 720 to move along a preset inclined trajectory. During this process, the forming head at the front end of the second insert 720 gradually exits the forming area from the inside of the product flange.

[0036] Considering that the edge 1.1 of the product is a sloped surface, in order to avoid friction or interference between the head of the second insert 720 and the surface of the edge 1.1 during the withdrawal process, the withdrawal movement direction of the second insert 720 is designed to be completely consistent with the sloped surface of the edge 1.1 in this embodiment. By adjusting the tilt angle of the guide groove 731, it is ensured that the movement trajectory of the second insert 720 remains parallel to the sloped surface of the edge 1.1 throughout the entire withdrawal process.

[0037] Based on the above settings, a uniform gap is always maintained between the head of the second insert 720 and the edge 1.1, thereby completely avoiding any contact or collision that may occur between the two during relative movement, ensuring the stability of the molding process and the surface quality of the product.

[0038] Preferably, in this embodiment, the guide groove 731 is a T-shaped groove; the second insert 720 is provided with a T-shaped guide rail 721 that cooperates with the guide groove 731; The guide surface 732 and the vertical arrangement.

[0039] The transmission structure of the T-slot and T-rail 721 is a common guiding structure, which will not be described in detail here.

[0040] The guide surface 732 is set to be perpendicular to the edging 1.1. Specifically, the guiding direction of the guide groove 731 is made parallel to or coincident with the plane containing the edging 1.1. When the guide rail slides smoothly along the guide groove 731, it will cause the second insert 720 to generate two independent displacement components. Both displacement components are limited to the plane of the second insert 720 itself. In one of these displacement components, the displacement in one direction will manifest as the second insert 720 gradually retracting outward relative to the side of the edging 1.1. This movement mode ensures the coordinated cooperation between the components.

[0041] Throughout the entire movement, the perpendicular relationship between the guide surface 732 and the edge 1.1 provides the necessary constraints for the precise movement of the mechanism.

[0042] Preferably, in this embodiment, in order to match the special structure of the edging 1.1, the guiding direction of the guide groove 731 is set at an angle to the X-axis, Y-axis and Z-axis, that is, the guide surface 732 is not on the normal surface.

[0043] In this embodiment, the two end faces of the second insert 720 used for splicing are both set as inclined surfaces, and the inclination angle is consistent with the edging 1.1.

[0044] In this embodiment, refer to Figure 6 and Figure 7 As shown, the two end faces of the second insert 720 are set as inclined surfaces with a certain angle. The main purpose of this design is to create an inclined splicing groove b between the fixed mold core 500 and the first insert core pull 600. The structural dimensions and geometry of the splicing groove b need to be completely consistent with the structural features of the head of the second insert 720. Through this fitting design, it can be ensured that the second insert 720 can accurately extend into the splicing groove b to complete the assembly, thereby forming a complete edge 1.1 structure when the mold is closed.

[0045] Meanwhile, during the design of the splicing groove b, this tilt angle must be completely consistent with the 1.1-degree edging angle required for the final product. When the mold opens and the second insert 720 needs to be withdrawn, due to the tilt restriction of the splicing groove b, the second insert 720 can only smoothly withdraw along the preset tilt angle direction of the splicing groove b. This not only realizes the basic splicing function, but also gives the splicing groove b a precise guiding function, ensuring the stability and reliability of the mold movement.

[0046] To ensure the stability of the second insert core puller 700 in the mold-closed state, in this embodiment, a stop block 5 is provided on the fixed mold base 200, and the upper end of the stop block 5 is limitedly connected to the moving mold core 400. The stop block 5 is located outside the slider 730 and slides with the slider 730 through an inclined surface.

[0047] A vertical stop 5 groove is provided on the inner side wall of the fixed mold base 200, and the cross-sectional shape of the stop 5 groove matches the stop 5. The stop 5 is firmly installed inside the stop 5 groove, and its top extends out of the upper end of the fixed mold base 200, forming a mating connection structure with the specially designed limiting groove at the bottom of the moving mold base 100.

[0048] The end face of the stop block 5 facing the slider 730 is set as an inclined mating surface 5.1 with a certain angle, and the slider 730 is correspondingly provided with a driving surface 733 that interacts with the mating surface 5.1.

[0049] When the mold is in the closed state, the moving mold base 100 effectively limits and constrains the stop block 5 through the limiting groove at its lower end. At this time, the stop block 5 is firmly fixed at the bottom of the stop block 5 groove. This allows the stop block 5 to continuously apply a pushing force to the slider 730 towards the fixed mold core 500. Even if the drive component 710 performs a mold retraction action, the slider 730 cannot disengage from the fixed mold core 500 due to the blocking effect of the stop block 5, thus ensuring the stability of the closed state.

[0050] When the mold begins to open, the moving mold base 100 gradually separates from the fixed mold base 200, and the original limiting constraint on the stop block 5 is released. At this time, the slider 730 begins to move outward under the drive of the drive component 710. The drive surface 733 on the slider 730 comes into contact with the mating surface 5.1 of the stop block 5 and applies a pushing force. The direction of this pushing force is perpendicular to the mating surface 5.1 and can be decomposed into a vertically upward component. This component force effectively pushes the mating surface 5.1 upward, thereby driving the entire stop block 5 to slide upward along the stop block 5 groove, and finally causing the stop block 5 to completely retract from the stop position, creating conditions for the complete opening of the mold.

[0051] In this embodiment, in order to ensure that the first injection cavity a formed between the first insert core puller 600 and the second insert core puller 700 is a stable cavity, in this embodiment, a positioning block 2 is provided in the fixed template, and the first insert core puller 600 is slidably disposed on the positioning block 2. Furthermore, the head of the first insert on the first insert core-pulling 600 extends into the interior of the fixed mold core 500; The upper end of the positioning block 2 receives the head of the first insert.

[0052] Preferred, refer to Figure 3 , Figure 7 and Figure 8 As shown, the end of the positioning block 2 is designed with a protruding structure, giving it a distinct protruding feature relative to the first insert. Specifically, during mold closing, when the first insert is fully inserted into the cavity, the front end of the positioning block 2 partially forms a parting surface 2.1. This parting surface 2.1 not only clearly defines the bottom boundary position of the edge 1.1 structure, but more importantly, provides a precise positioning reference for the entire molding process. At the same time, the positioning block 2 also offers additional functional advantages: when the first insert slides relative to the fixed mold core 500, the positioning block 2 always provides stable and reliable support. This support mechanism effectively prevents any minor wobbling that may occur at the head of the first insert, thereby ensuring the dimensional stability of the internal space of the first injection cavity a. This not only improves the precision of the mold but also significantly enhances the consistency of the molded product quality.

[0053] Preferably, in this embodiment, the front end of the positioning block 2 is provided with an arc-shaped stop surface 2.2 that connects with the parting surface 2.1. When the mold is closed, the lower end of the first insert core puller 600 cooperates with the stop surface 2.2 and is stopped by the stop surface 2.2, so it cannot continue to slide towards the parting surface 2.1, thus ensuring that the thickness of the edge 1.1 is consistent with the parting surface 2.1.

[0054] In this embodiment, the main body of the optical lens 1 is formed above the fixed mold core 500. When demolding the edge banding 1.1, it needs to be removed from below the edge banding 1.1. Therefore, the lower end of the fixed mold core 500 is provided with a clearance space that can accommodate the second insert core pull 700. The second insert core pull 700 is spliced ​​with the fixed mold core 500 from below the fixed mold core 500.

[0055] The lower end of the fixed mold core 500 is provided with an inclined clearance space, and the second insert 720 of the second insert core puller 700 is disposed in the clearance space and slides along the clearance space.

[0056] Preferably, considering the rationality of the layout and to avoid interference between the driving directions of the two insert core pullers, in this embodiment, the sliding direction of the first insert core puller 600 and the driving direction of the driving member 710 are set perpendicularly. The sliding direction of the first insert core puller 600 is preferably the Y-axis direction, and the driving direction of the driving member 710 of the second insert core puller 700 is preferably the X-axis direction.

[0057] In this embodiment, due to the special structure of the light distribution lens 1, in order to ensure the consistency of filling of the molten injection molding material during the injection molding process, the runner plate 300 is disposed above the moving mold base 100, an inclined fixing seat 3 is embedded on the moving mold base 100, and the hot nozzle 4 is installed at the lower end of the fixing seat 3, and passes through the moving mold base 100 and the moving mold core 400 in sequence, extending into the cavity.

[0058] The installation angle of the hot nozzle 4 is appropriately tilted so that its outlet forms an approximately 90-degree perpendicular relationship with the curved surface structure of the arc-shaped light distribution lens 1. This tilt angle configuration allows the molten plastic material to diffuse and flow evenly in all directions along the vertical direction of the hot nozzle 4 when injected into the mold cavity during injection molding. This effectively avoids local accumulation or uneven filling of the material in the cavity, thus achieving a balanced distribution and complete filling of the molten plastic within the cavity space.

[0059] Based on the above settings, not only is the efficiency of injection molding improved, but more importantly, it ensures a high degree of consistency in optical performance and structural dimensions of the final optical lens 1 product, fully meeting the manufacturing requirements of precision optical components.

[0060] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A molding die for forming a rear combination lamp for an automobile, used for forming an automobile lens (1), comprising a movable mold base (100) and a fixed mold base (200) disposed inside a mold frame, wherein the movable mold base (100) and the fixed mold base (200) close together to form a mold cavity; wherein a movable mold core (400) and a fixed mold core (500) are disposed inside the mold cavity to form a cavity when the mold is opened, wherein the movable mold core (400) moves with the movable mold base (100) to demold the automobile lens (1); Its features are: The moving mold base (100) is provided with a runner plate (300), and the runner plate (300) injects plastic into the cavity through the inclined hot nozzle (4); The side of the fixed mold core (500) is sequentially spliced ​​with a first insert core puller (600) and a second insert core puller (700), and the first insert core puller (600), the second insert core puller (700) and the fixed mold core (500) are combined to form an automotive lens (1). The first insert core puller (600) moves relative to the fixed mold core (500) along a first path, and the second insert core puller (700) moves relative to the fixed mold core (500) along a second path; The first path and the second path are set at an angle; A first injection cavity (a) with a molding edge (1.1) is provided between the first insert core pull (600) and the second insert core pull (700).

2. The automotive rear combination lamp forming mold according to claim 1, characterized in that: The second insert core puller (700) includes a slider (730) driven by a drive member (710) in the horizontal direction. The slider (730) is provided with a guide groove (731). The second insert (720) is slidably disposed in the guide groove (731) and slides along the guide groove (731). The guiding direction of the guide groove (731) and the moving direction of the slider (730) are set on the same plane, and the plane is parallel to the edge (1.1).

3. The automotive rear combination lamp forming mold according to claim 2, characterized in that: The guide groove (731) is a T-shaped groove; the second insert (720) is provided with a T-shaped guide rail (721) that mates with the guide groove (731); The guide surface (732) and the edge (1.1) are arranged perpendicularly.

4. The automotive rear combination lamp forming mold according to claim 2 or 3, characterized in that: The two end faces of the second insert (720) used for splicing are both set as inclined surfaces, and the inclination angle is consistent with the edge (1.1).

5. The automotive rear combination lamp forming mold according to claim 2 or 3, characterized in that: A stop block (5) is provided on the fixed mold base (200), and the upper end of the stop block (5) is limitedly connected to the moving mold core (400); The stop (5) is located outside the slider (730) and slides with the slider (730) through an inclined surface.

6. The automotive rear combination lamp forming mold according to claim 1, characterized in that: A positioning block (2) is provided inside the template, and the first insert core puller (600) is slidably disposed on the positioning block (2); Furthermore, the head of the first insert on the first insert core puller (600) extends into the interior of the fixed mold core (500); The upper end of the positioning block (2) receives the head of the first insert.

7. The automotive rear combination lamp forming mold according to claim 1, characterized in that: The lower end of the fixed mold core (500) is provided with a clearance space that can accommodate the second insert core pull (700), and the second insert core pull (700) is spliced ​​with the fixed mold core (500) from below.

8. The automotive rear combination lamp forming mold according to claim 2, characterized in that: The sliding direction of the first insert core puller (600) is perpendicular to the driving direction of the drive member (710).

9. The automotive rear combination lamp forming mold according to claim 1, characterized in that: The flow channel plate (300) is disposed above the moving mold base (100). An inclined fixed seat (3) is embedded in the moving mold base (100). The hot nozzle (4) is installed at the lower end of the fixed seat (3) and passes through the moving mold base (100) and the moving mold core (400) in sequence, extending into the cavity.

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