Double-rod delay ejection mechanism of automobile gradual change light guide injection mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a double-rod delay ejection mechanism of an automobile gradient light guide injection mold. The automobile gradual change light guide forming die comprises an automobile gradual change light guide forming die plate, and two light guide forming embedded plates which are symmetrical along the center line of the automobile gradual change light guide forming die plate are arranged in the automobile gradual change light guide forming die plate. In the injection molding process, the light guide molding insert panel is matched with the top structure of the double-rod ejection piece to form the lower molding surface of the plastic piece, after injection molding is completed, the ejection delay connecting assembly is moved firstly, and the double-rod ejection piece is driven to move upwards in an inclined mode through the connection relation between the ejection delay connecting assembly and the double-rod ejection piece; the double-rod ejection structure is adopted to be matched with secondary start demolding, double-rod delayed ejection is achieved, on one hand, the ejection stroke and angle can be controlled more accurately, on the other hand, position deviation of the ejection structure in the injection molding process can be avoided, and the molding quality of the plastic part is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and relates to a double-rod delayed ejection mechanism for an automotive gradient light guide injection mold. Background Art

[0002] The thick-walled parts of automotive headlamps are one of the components of an automobile. The thick-walled parts of automotive headlamps are usually processed and formed by injection molds. At the same time, the forming quality requirements for transparent plastic products of the light guide thick-walled parts are more stringent. With the continuous upgrading of automotive light guide parts, the gradient light guide parts are gradually becoming popular. After the injection molding of the existing automotive gradient light guide injection mold is completed, the ejection and demolding structure generally directly drives through a cylinder or an oil cylinder, lacking the effect of delayed ejection. It is difficult to accurately control the ejection stroke and angle by direct ejection, and it is easy to affect the forming quality of the plastic part during injection molding. Therefore, there is an urgent need to design a double-rod delayed ejection mechanism for an automotive gradient light guide injection mold that can overcome the above defects.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a through-type LED automotive tail light light guide part injection mold [Application No.: 202323074322.4], which includes an upper template and a lower template. Two forming cavities are symmetrically arranged between the upper template and the lower template. An injection plate is also provided on the upper side of the upper template, and a double-plate injection mechanism capable of independently injecting glue into the two forming cavities simultaneously is arranged in the injection plate. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a double-rod delayed ejection mechanism for an automotive gradient light guide injection mold aiming at the above problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A double-rod delayed ejection mechanism for an automotive gradient light guide injection mold includes an automotive gradient light guide forming template. Two light guide forming inserts symmetrically arranged along the center line of the automotive gradient light guide forming template are arranged in the automotive gradient light guide forming template. A double-rod ejector is arranged below the automotive gradient light guide forming template and extends into the automotive gradient light guide forming template. The position of the double-rod ejector corresponds to that of the light guide forming insert. A top-out delay connection component is arranged below the automotive gradient light guide forming template, and the top-out delay connection component is connected to the double-rod ejector.

[0007] In the above double-rod delayed ejection mechanism for an automotive gradient light guide injection mold, the top-out delay connection component includes a fixed seat arranged below the automotive gradient light guide forming template. A connecting slide rod is arranged in the fixed seat, and the connecting slide rod is connected to the double-rod ejector through an inclined sliding part.

[0008] In the above-mentioned double-rod delayed ejection mechanism of the automotive gradient optical waveguide injection mold, the connecting slide rod is inclined.

[0009] In the above-mentioned double-rod delayed ejection mechanism of the automotive gradient optical waveguide injection mold, the oblique sliding part includes an inclined slide table arranged in the fixed seat, an oblique chute is arranged in the fixed seat, oblique limiting strips symmetric about the center line of the inclined slide table are arranged on both sides of the inclined slide table, the oblique limiting strips are in sliding fit with the oblique chute, and the inclined slide table is connected to the double-rod ejector.

[0010] In the above-mentioned double-rod delayed ejection mechanism of the automotive gradient optical waveguide injection mold, the double-rod ejector includes an ejection main rod and an auxiliary forming ejecting block, the ejection main rod is connected to the inclined slide table, and the auxiliary forming ejecting block corresponds to the position of the optical waveguide forming panel.

[0011] In the above-mentioned double-rod delayed ejection mechanism of the automotive gradient optical waveguide injection mold, the top of the auxiliary forming ejecting block has an auxiliary forming surface, and the auxiliary forming surface is connected to the optical waveguide forming panel.

[0012] In the above-mentioned double-rod delayed ejection mechanism of the automotive gradient optical waveguide injection mold, the ejection main rod is inclined, and the axis line of the ejection main rod is parallel to the axis line of the connecting slide rod.

[0013] In the above-mentioned double-rod delayed ejection mechanism of the automotive gradient optical waveguide injection mold, a limiting part is arranged at the bottom of the automotive gradient optical waveguide forming template, and the ejection main rod and the connecting slide rod pass through the limiting part.

[0014] In the above-mentioned double-rod delayed ejection mechanism of the automotive gradient optical waveguide injection mold, the limiting part includes a limiting insert arranged at the bottom of the automotive gradient optical waveguide forming template, and the ejection main rod and the connecting slide rod pass through the limiting insert.

[0015] In the above-mentioned double-rod delayed ejection mechanism of the automotive gradient optical waveguide injection mold, a slide rod fixed base is arranged at the bottom of the connecting slide rod.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows:

[0017] 1. During the injection molding process of the present utility model, the lower forming surface of the plastic part is formed by the cooperation of the optical waveguide forming panel and the top structure of the double-rod ejector. After the injection molding is completed, first move the ejection delay connection assembly. Through the connection relationship between the ejection delay connection assembly and the double-rod ejector, drive the double-rod ejector to move obliquely upward to eject and demold the formed plastic part. The double-rod ejection structure is combined with secondary start-up demolding to realize double-rod delayed ejection. On the one hand, the ejection stroke and angle can be controlled more precisely. On the other hand, the position deviation of the ejection structure during the injection molding process can be avoided, ensuring the molding quality of the plastic part.

[0018] 2. The limiting insert plate in the present utility model plays a role in restricting the angles of the ejection main rod and the connecting sliding rod.

[0019] Other advantages, objectives, and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the present utility model.

[0021] Figure 2 is a schematic partial structural view of the present utility model.

[0022] Figure 3 is a schematic partial structural view of the present utility model in another direction.

[0023] Figure 4 is a schematic partial structural view of the present utility model in another direction.

[0024] In the figure: automotive gradient light guide forming template 1, light guide forming insert plate 2, double-rod ejector 3, ejection delay connection assembly 4, fixed seat 5, connecting sliding rod 6, oblique sliding part 7, oblique sliding table 8, oblique sliding groove 9, oblique limiting strip 10, ejection main rod 11, auxiliary forming top block 12, auxiliary forming surface 13, limiting member 14, limiting insert plate 15, sliding rod fixed base 16. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described below with reference to the accompanying drawings.

[0026] As Figures 1-4 shown, an automotive gradient light guide injection mold double-rod delay ejection mechanism includes an automotive gradient light guide forming template 1. Two light guide forming insert plates 2 symmetrically arranged along the center line of the automotive gradient light guide forming template 1 are provided inside the automotive gradient light guide forming template 1. A double-rod ejector 3 extending into the automotive gradient light guide forming template 1 is provided below the automotive gradient light guide forming template 1. The double-rod ejector 3 corresponds to the position of the light guide forming insert plate 2. An ejection delay connection assembly 4 is provided below the automotive gradient light guide forming template 1. The ejection delay connection assembly 4 is connected to the double-rod ejector 3.

[0027] In this embodiment, during the injection molding process, the lower molding surface of the plastic part is formed by the cooperation of the light guide forming panel 2 and the top structure of the double-rod ejector 3. After the injection molding is completed, first move the ejection delay connection component 4. Through the connection relationship between the ejection delay connection component 4 and the double-rod ejector 3, drive the double-rod ejector 3 to move obliquely upward to eject and demold the formed plastic part. The double-rod ejection structure is combined with secondary start-up demolding to achieve double-rod delayed ejection. On the one hand, the ejection stroke and angle can be controlled more precisely. On the other hand, the position deviation of the ejection structure during the injection molding process can be avoided, ensuring the molding quality of the plastic part.

[0028] Combined with Figures 1-4 As shown, the ejection delay connection component 4 includes a fixed seat 5 arranged below the automotive gradient light guide forming template 1. A connecting slide rod 6 is provided in the fixed seat 5. The connecting slide rod 6 is connected to the double-rod ejector 3 through an oblique sliding part 7. The connecting slide rod 6 is obliquely arranged. The oblique sliding part 7 includes an oblique slide table 8 arranged in the fixed seat 5. An oblique chute 9 is provided in the fixed seat 5. Oblique limiting strips 10 symmetrically arranged along the center line of the oblique slide table 8 are provided on both sides of the oblique slide table 8. The oblique limiting strips 10 are slidably matched with the oblique chute 9. The oblique slide table 8 is connected to the double-rod ejector 3.

[0029] In this embodiment, when it is necessary to move the double-rod ejector 3, first move the connecting slide rod 6. Drive the oblique slide table 8 to move obliquely upward through the connecting slide rod 6. The oblique limiting strip 10 is slidably matched with the oblique chute 9 to limit the movement of the oblique slide table 8. Drive the double-rod ejector 3 to move through the oblique slide table 8. The double-rod ejection structure is combined with secondary start-up demolding to achieve double-rod delayed ejection. On the one hand, the ejection stroke and angle can be controlled more precisely. On the other hand, the position deviation of the ejection structure during the injection molding process can be avoided, ensuring the molding quality of the plastic part.

[0030] The double-rod ejector 3 includes an ejection main rod 11 and an auxiliary forming ejecting block 12. The ejection main rod 11 is connected to the oblique slide table 8. The auxiliary forming ejecting block 12 corresponds to the position of the light guide forming panel 2. An auxiliary forming surface 13 is provided on the top of the auxiliary forming ejecting block 12. The auxiliary forming surface 13 is connected to the light guide forming panel 2.

[0031] In this embodiment, during the injection molding process, the auxiliary forming surface 13 on the top of the auxiliary forming ejecting block 12 cooperates with the light guide forming panel 2 to form the lower molding surface of the plastic part. After the injection molding is completed, drive the ejection main rod 11 and the auxiliary forming ejecting block 12 to move synchronously through the movement of the oblique slide table 8 to achieve oblique ejection demolding.

[0032] The ejection main rod 11 is obliquely arranged. The axis line of the ejection main rod 11 is parallel to the axis line of the connecting slide rod 6.

[0033] In this embodiment, the axis line of the ejection main rod 11 is parallel to the axis line of the connecting slide rod 6, ensuring the consistency of the moving direction.

[0034] Combined with Figures 3-4 As shown, a limiting member 14 is provided at the bottom of the automotive gradient light guide forming template 1, and the ejection main rod 11 and the connecting slide rod 6 pass through the limiting member 14.

[0035] In this embodiment, the limiting member 14 plays a role in restricting the angles of the ejection main rod 11 and the connecting slide rod 6.

[0036] Combined with Figure 4 As shown, the limiting member 14 includes a limiting inlay panel 15 provided at the bottom of the automotive gradient light guide forming template 1, and the ejection main rod 11 and the connecting slide rod 6 pass through the limiting inlay panel 15.

[0037] In this embodiment, the limiting inlay panel 15 plays a role in restricting the angles of the ejection main rod 11 and the connecting slide rod 6.

[0038] Combined with Figures 1-4 As shown, a slide rod fixed base 16 is provided at the bottom of the connecting slide rod 6.

[0039] In this embodiment, the slide rod fixed base 16 is used to fix the bottom of the connecting slide rod 6, facilitating the movement of the connecting slide rod 6.

[0040] The working principle of the present utility model is:

[0041] During the injection molding process, the auxiliary forming surface 13 at the top of the auxiliary forming block 12 cooperates with the light guide forming inlay panel 2 to form the lower forming surface of the plastic part. After the injection molding is completed, first move the connecting slide rod 6. The connecting slide rod 6 drives the inclined slide table 8 to move obliquely upward. The inclined limiting strip 10 and the inclined sliding groove 9 are in sliding fit, playing a role in limiting the movement of the inclined slide table 8. The inclined slide table 8 drives the ejection main rod 11 and the auxiliary forming block 12 to move synchronously, realizing inclined ejection demolding. The double-rod ejection structure is combined with secondary start-up demolding to realize double-rod delayed ejection. On the one hand, the ejection stroke and angle can be controlled more precisely. On the other hand, the position deviation of the ejection structure during the injection molding process can be avoided, ensuring the molding quality of the plastic part. The axis line of the ejection main rod 11 is parallel to the axis line of the connecting slide rod 6, ensuring the consistency of the moving direction.

[0042] The limiting inlay panel 15 plays a role in restricting the angles of the ejection main rod 11 and the connecting slide rod 6.

[0043] The slide rod fixed base 16 is used to fix the bottom of the connecting slide rod 6, facilitating the movement of the connecting slide rod 6.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar ways of substitution, but will not deviate from the spirit of the present utility model.

[0045] Although terms such as automotive gradient light guide forming template 1, light guide forming panel 2, double-rod ejector 3, ejector delay connection assembly 4, fixed seat 5, connecting slide bar 6, oblique sliding part 7, oblique slide table 8, oblique sliding groove 9, oblique limiting strip 10, ejector main rod 11, auxiliary forming ejector block 12, auxiliary forming surface 13, limiting part 14, limiting panel 15, slide bar fixed base 16, etc. are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for more conveniently describing and explaining the essence of the present utility model, and interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A double-rod delayed ejection mechanism for a gradual light guide injection mold for an automobile, comprising a gradual light guide molding template for an automobile (1), characterized in that: The automotive gradient optical waveguide molding template (1) is provided with two optical waveguide molding panels (2) symmetrically arranged along the center line of the automotive gradient optical waveguide molding template (1); a double-rod ejector (3) extending into the automotive gradient optical waveguide molding template (1) is provided below the automotive gradient optical waveguide molding template (1); the double-rod ejector (3) corresponds to the position of the optical waveguide molding panels (2); an ejection delay connection component (4) is provided below the automotive gradient optical waveguide molding template (1); the ejection delay connection component (4) is connected to the double-rod ejector (3).

2. The double-rod delayed ejection mechanism of the automotive gradient light guide injection mold according to claim 1, characterized in that: The ejection delay connection assembly (4) comprises a fixing seat (5) arranged below the automobile gradient light guide molding template (1), a connecting slide rod (6) is arranged in the fixing seat (5), and the connecting slide rod (6) is connected to the double-rod ejection member (3) via an oblique sliding portion (7).

3. The double-rod delayed ejection mechanism of the automotive gradient light guide injection mold according to claim 2, characterized in that: The connecting slide bar (6) is arranged in an inclined manner.

4. The double-rod delayed ejection mechanism of the automotive gradient light guide injection mold according to claim 3, characterized in that: The oblique sliding portion (7) comprises an oblique sliding platform (8) arranged in a fixed seat (5), an oblique sliding groove (9) is arranged in the fixed seat (5), oblique limiting strips (10) symmetrical along the center line of the oblique sliding platform (8) are arranged on both sides of the oblique sliding platform (8), the oblique limiting strips (10) are slidably matched with the oblique sliding groove (9), and the oblique sliding platform (8) is connected to the double-rod ejector (3).

5. The double-rod delayed ejection mechanism of the automotive gradient light guide injection mold according to claim 4, characterized in that: The double-rod ejector (3) comprises an ejector main rod (11) and an auxiliary molding ejector block (12); the ejector main rod (11) is connected to the inclined slide (8); and the auxiliary molding ejector block (12) corresponds to the position of the light guide molding panel (2).

6. The double-rod delayed ejection mechanism of the automotive gradient light guide injection mold according to claim 5, characterized in that: The top of the auxiliary molding top block (12) is provided with an auxiliary molding surface (13), and the auxiliary molding surface (13) is connected to the light guide molding panel (2).

7. The double-rod delayed ejection mechanism of the automotive gradient light guide injection mold according to claim 6, characterized in that: The ejection main rod (11) is arranged in an inclined manner, and the axis center line of the ejection main rod (11) and the axis center line of the connecting slide rod (6) are parallel to each other.

8. The double-rod delayed ejection mechanism of the automotive gradient light guide injection mold according to claim 7, characterized in that: A limiting piece (14) is provided at the bottom of the automobile gradient light guide molding template (1), and the ejection main rod (11) and the connecting sliding rod (6) pass through the limiting piece (14).

9. The double-rod delayed ejection mechanism of the automotive gradient light guide injection mold according to claim 8, characterized in that: The limiting member (14) comprises a limiting panel (15) arranged at the bottom of the automobile gradient light guide molding template (1), and the ejection main rod (11) and the connecting slide rod (6) pass through the limiting panel (15).

10. The double-rod delayed ejection mechanism of the automotive gradient light guide injection mold according to claim 9, characterized in that: A slide bar fixing base (16) is provided at the bottom of the connecting slide bar (6).

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