Combined type secondary ejection mechanism of automobile thick-wall light guide injection mold

Abstract

The utility model provides a combined type secondary ejection mechanism of an automobile thick-wall light guide injection mold, and belongs to the technical field of molds. The mold comprises a lower mold plate, two forming cavities are symmetrically formed in the lower mold plate, an oblique translation type core pulling mechanism is correspondingly arranged on the outer side of each forming cavity, a top plate is arranged on the lower side of the lower mold plate, and two sets of rectangular ejector rods corresponding to the two forming cavities respectively are fixedly connected to the top plate. The arc-shaped groove in the top of the rectangular ejector rod can form an arc-shaped convex part on a light guide piece product, after the light guide piece is subjected to injection molding, the ejector plate moves upwards, thrust can be applied to the light guide piece through the rectangular ejector rod, and therefore the light guide piece product can be ejected out of the lower mold plate; the arc-shaped convex part and the arc-shaped groove on the light guide piece product are still in the adhesion state, at the moment, thrust can be applied to the arc-shaped convex part through the secondary ejection assembly, so that the arc-shaped convex part and the arc-shaped groove can be separated, and the light guide piece product is prevented from being damaged due to manual separation.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a combined secondary ejection mechanism for a thick-walled light guide injection mold for an automobile. Background Art

[0002] Thick-walled automotive light guides are generally produced by injection molding. After the thick-walled automotive light guides are injection molded by the mold, the existing mold can only eject the product upward through the top plate and the ejector rod with an arc-shaped groove. However, the connection between the ejected light guide and the arc-shaped groove on the ejector rod cannot be separated. The light guide and the ejector rod need to be separated manually, which can easily cause product damage during the process.

[0003] For example, a Chinese patent discloses a light guide injection mold for thick-walled parts of automobile headlights [application number: 202122127895.3], which includes a base placed on a workbench, and a lower fixed mold and an upper movable mold are placed on the top of the base in sequence from bottom to top; it also includes: a fan, which is arranged on the left side of the upper end of the base; two groups of fixed columns, which are symmetrically installed on both sides of the upper end of the base, and the two groups of fixed columns are respectively arranged on the left and right sides of the lower fixed mold; a cavity, which is opened inside the fixed column; an air outlet, which is opened at equal intervals inside the upper end of the base, and the air outlet is located below the lower fixed mold. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a combined secondary ejection mechanism for a thick-walled light guide injection mold for an automobile.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A combined secondary ejection mechanism of a thick-walled light guide injection mold for an automobile comprises a lower mold plate, two molding cavities are symmetrically arranged on the lower mold plate, an oblique translational core pulling mechanism is correspondingly arranged on the outer side of each molding cavity, a top plate is arranged on the lower side of the lower mold plate, two groups of rectangular ejector rods corresponding to the two molding cavities are fixedly connected to the top plate, the rectangular ejector rod is arranged on the side of the molding cavity away from the oblique translational core pulling mechanism and an inwardly concave arc groove is arranged on the top, and a secondary ejection component is also arranged in the rectangular ejector rod.

[0007] In the above-mentioned combined secondary ejection mechanism of the automobile thick-wall light guide injection mold, the secondary ejection assembly includes a secondary ejector rod arranged in a rectangular ejector rod, the top end of the secondary ejector rod vertically penetrates the arc groove and can protrude from the bottom surface of the arc groove.

[0008] In the above-mentioned combined secondary ejection mechanism of the automobile thick-wall light guide injection mold, a driving member capable of driving the top end of the secondary ejector to be flush with or protrude from the bottom surface of the arc groove is arranged in the rectangular ejector.

[0009] In the above-mentioned combined secondary ejection mechanism of the automobile thick-wall light guide injection mold, the secondary ejector rod is cylindrical.

[0010] In the above-mentioned combined secondary ejection mechanism of the automotive thick-walled light guide injection mold, the oblique translational core pulling mechanism includes a thin sheet having a stepped structure and inserted into the molding cavity, the stepped structure is located at the end of the thin sheet and a plurality of stepped planes constituting the stepped structure are arranged corresponding to the rectangular ejector rod, and the end of the thin sheet away from the stepped plane is connected to a thin sheet driving component that can drive the thin sheet to move in a direction perpendicular to the stepped plane.

[0011] In the above-mentioned combined secondary ejection mechanism of the automobile thick-walled light guide injection mold, the thin film driving assembly includes a translation seat and a driving rod fixed to the thin film, the driving rod is tilted and slidably matched with the translation seat, and the driving rod is connected to the upper mold plate through a connecting piece.

[0012] In the above-mentioned combined secondary ejection mechanism of the automobile thick-walled light guide injection mold, the connecting member includes an L-shaped connecting seat, the driving rod is fixed on the L-shaped connecting seat, and the L-shaped connecting seat has an anti-backward portion that can abut against the outer end of the translation seat.

[0013] In the above-mentioned combined secondary ejection mechanism of the automobile thick-wall light guide injection mold, the thin sheet and the translation seat are detachably connected by a plurality of screws.

[0014] In the above-mentioned combined secondary ejection mechanism of the automobile thick-wall light guide injection mold, limiting pressure plates are also provided on both sides of the translation seat.

[0015] In the above-mentioned combined secondary ejection mechanism of the automobile thick-wall light guide injection mold, a straight ejector rod connected to the molding cavity is also fixedly connected to the ejector plate.

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

[0017] 1. The arc groove at the top of the rectangular ejector rod can form an arc convex portion on the light guide product. After the light guide product is injection molded, the top plate moves upward to apply a thrust to the light guide product through the rectangular ejector rod, so that the light guide product can be ejected from the lower template. After the light guide product is separated from the lower template, the arc convex portion and the arc groove on the light guide product are still in an adhered state. At this time, the secondary ejection component can apply a thrust to the arc convex portion, so that the arc convex portion and the arc groove can be separated, so as to prevent the light guide product from being damaged due to manual separation.

[0018] 2. The secondary ejector rod can be driven to rise and fall in the vertical direction by the driving member. When the light guide product is injected, the driving member drives the secondary ejector rod to fall until the top is flush with the bottom surface of the arc groove. When the light guide product is ejected by the rectangular ejector rod, the driving member can drive the secondary ejector rod to rise so that the arc-shaped protrusion and the arc groove at the top of the rectangular ejector rod can be separated.

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

[0020] Figure 1 It is a structural diagram of the lower template;

[0021] Figure 2 It is a schematic diagram of the local structure of the lower template;

[0022] Figure 3 It is a partial structural schematic diagram of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure at the rectangular top rod;

[0024] Figure 5 yes Figure 4 A magnified schematic diagram of center A.

[0025] In the figure, the lower template 1, the molding cavity 2, the oblique translation type core pulling mechanism 3, the top plate 4, the rectangular ejector rod 5, the arc groove 6, the secondary ejector rod 7, the thin sheet 8, the stepped plane 9, the translation seat 10, the driving rod 11, the connecting piece 12, the L-shaped connecting seat 13, the anti-backward part 14, the limiting pressure plate 15, and the straight ejector rod 16. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5 As shown, a combined secondary ejection mechanism of a thick-walled optical injection mold for an automobile comprises a lower template 1, on which two molding cavities 2 are symmetrically arranged, and an oblique translational core-pulling mechanism 3 is correspondingly arranged on the outer side of each molding cavity 2, and a top plate 4 is arranged on the lower side of the lower template 1, and two groups of rectangular ejector rods 5 corresponding to the two molding cavities 2 are fixedly connected to the top plate 4, and the rectangular ejector rods 5 are arranged on the side of the molding cavity 2 away from the oblique translational core-pulling mechanism 3 and an inwardly recessed arc groove 6 is arranged on the top, and a secondary ejection component is also arranged in the rectangular ejector rod 5.

[0027] In the utility model, the arc groove at the top of the rectangular ejector rod 5 can form an arc convex portion on the light guide product. After the light guide product is injection molded, the top plate moves upward to apply a thrust to the light guide product through the rectangular ejector rod, thereby ejecting the light guide product from the lower template. After the light guide product and the lower template are separated, the arc convex portion and the arc groove on the light guide product are still in an adhesion state. At this time, a thrust can be applied to the arc convex portion through a secondary ejection component, thereby separating the arc convex portion and the arc groove, so as to prevent damage to the light guide product caused by artificial separation. When the mold is opened, the oblique translation core pulling mechanism 3 can realize oblique translation core pulling.

[0028] Specifically, the secondary ejection assembly includes a secondary ejector rod 7 disposed in the rectangular ejector rod 5, the top end of which vertically penetrates the arc groove 6 and can protrude from the bottom surface of the arc groove 6, and a driving member capable of driving the top end of the secondary ejector rod 7 to be flush with the bottom surface of the arc groove 6 or protrude from the bottom surface of the arc groove 6 is disposed in the rectangular ejector rod 5, and the secondary ejector rod 7 is cylindrical. The secondary ejector rod can be driven to rise and fall in the vertical direction by the driving member, and when the light guide product is injected, the driving member drives the secondary ejector rod to fall until the top is flush with the bottom surface of the arc groove, and when the light guide product is ejected by the rectangular ejector rod, the driving member can drive the secondary ejector rod to rise so that the arc convex portion and the arc groove at the top of the rectangular ejector rod can be separated.

[0029] Those skilled in the art should understand that the driving member may be an oil cylinder, an air cylinder or a linear motor, etc.

[0030] Specifically, the oblique translation core-pulling mechanism 3 includes a sheet 8 having a stepped structure and inserted into the molding cavity 2, the stepped structure is located at the end of the sheet 8 and a plurality of stepped planes 9 constituting the stepped structure are arranged corresponding to the rectangular push rod 5, and the sheet 8 is connected to a sheet driving component capable of driving the sheet 8 to move in a direction perpendicular to the stepped plane 9 at one end away from the stepped plane 9. When the mold is opened, the sheet driving component can drive the sheet to move in a direction perpendicular to the stepped plane 9 so as to realize automatic core-pulling of the sheet.

[0031] Specifically, the sheet drive assembly includes a translation seat 10 and a driving rod 11 fixedly connected to the sheet 8. The driving rod 11 is tilted and slidably cooperates with the translation seat 10. The driving rod 11 is connected to the upper mold plate through a connecting piece 12. When the mold is opened, the upper mold plate moves upward to drive the driving rod to move vertically upward through the connecting piece. The vertical upward movement of the driving rod can drive the translation seat to move in a direction perpendicular to the step plane 9, thereby realizing automatic core pulling of the sheet.

[0032] Specifically, the connecting member 12 includes an L-shaped connecting seat 13, the driving rod 11 is fixed on the L-shaped connecting seat 13, and the L-shaped connecting seat 13 has an anti-retraction portion 14 that can abut against the outer end of the translation seat 10. The anti-retraction portion 14 can limit the outer end of the translation seat during product injection molding to prevent the translation seat from retreating.

[0033] Preferably, the sheet 8 and the translation seat 10 are detachably connected by a plurality of screws and can be easily disassembled, so as to facilitate rapid replacement of the sheet after it is damaged.

[0034] Preferably, limiting pressure plates 15 are further provided on both sides of the translation seat 10 , and the limiting pressure plates can limit the translation seat 10 .

[0035] Specifically, the top plate 4 is also fixedly connected with a straight push rod 16 connected to the molding cavity 2. When the top plate moves upward, the straight push rod can also apply a thrust to the light guide product to cooperate with the rectangular push rod to push the light guide product out.

[0036] The working principle of the utility model is as follows: the arc groove at the top of the rectangular ejector 5 can form an arc convex portion on the light guide product. After the light guide is injection molded, the top plate moves upward to apply a thrust to the light guide through the rectangular ejector so that the light guide product can be ejected from the lower template. After the light guide product is separated from the lower template, the arc convex portion and the arc groove on the light guide product are still in an adhered state. At this time, a thrust can be applied to the arc convex portion through the secondary ejection component so that the arc convex portion and the arc groove can be separated to prevent the light guide product from being damaged by manual separation. When the mold is opened, the oblique translation core pulling mechanism 3 can realize oblique translation core pulling;

[0037] The secondary ejector rod can be driven to rise and fall in the vertical direction by the driving member. When the light guide product is injected, the driving member drives the secondary ejector rod to fall until the top is flush with the bottom surface of the arc groove. When the light guide product is ejected by the rectangular ejector rod, the driving member can drive the secondary ejector rod to rise so that the arc convex part and the arc groove at the top of the rectangular ejector rod can be separated.

[0038] When the mold is opened, the sheet driving assembly can drive the sheet to move in a direction perpendicular to the step plane 9, thereby realizing automatic core pulling of the sheet. When the mold is opened, the upper template moves upward and can drive the driving rod to move vertically upward through the connecting piece. The vertical upward movement of the driving rod can drive the translation seat to move in a direction perpendicular to the step plane 9, thereby realizing automatic core pulling of the sheet. The anti-backward portion 14 can limit the outer end of the translation seat during product injection molding to prevent the translation seat from backing away. The sheet 8 and the translation seat 10 are detachably connected by a number of screws and can be easily disassembled to facilitate rapid replacement after the sheet is damaged. The limiting pressure plate can limit the translation seat 10. When the top plate moves upward, it can also apply thrust to the optical guide product through the straight push rod to cooperate with the rectangular push rod to eject the optical guide product.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0040] Although this article uses the lower template 1, molding cavity 2, oblique translation core pulling mechanism 3, top plate 4, rectangular ejector 5, arc groove 6, secondary ejector 7, thin sheet 8, stepped plane 9, translation seat 10, driving rod 11, connecting piece 12, L-shaped connecting seat 13, anti-backward portion 14, limiting pressure plate 15, straight ejector 16 and the like more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A combined secondary ejection mechanism for a thick-walled light guide injection mold for an automobile, comprising a lower mold plate (1), characterized in that: Two molding cavities (2) are symmetrically arranged on the lower template (1), and an oblique translational core-pulling mechanism (3) is correspondingly arranged on the outer side of each molding cavity (2). A top plate (4) is arranged on the lower side of the lower template (1), and two groups of rectangular ejector rods (5) corresponding to the two molding cavities (2) are fixedly connected to the top plate (4). The rectangular ejector rods (5) are arranged on the side of the molding cavity (2) away from the oblique translational core-pulling mechanism (3) and have an inwardly concave arc groove (6) on the top. A secondary ejection component is also arranged in the rectangular ejector rod (5).

2. The combined secondary ejection mechanism of the automotive thick-wall light guide injection mold according to claim 1 is characterized in that: The secondary ejection assembly comprises a secondary ejector rod (7) arranged in a rectangular ejector rod (5), the top end of the secondary ejector rod (7) vertically passing through the arc groove (6) and being able to protrude from the bottom surface of the arc groove (6).

3. The combined secondary ejection mechanism of the automotive thick-wall light guide injection mold according to claim 2 is characterized in that: The rectangular push rod (5) is provided with a driving member capable of driving the top end of the secondary push rod (7) to be flush with the bottom surface of the arc groove (6) or to protrude from the bottom surface of the arc groove (6).

4. The combined secondary ejection mechanism of the automotive thick-wall light guide injection mold according to claim 2, characterized in that: The secondary ejector rod (7) is cylindrical.

5. The combined secondary ejection mechanism of the automotive thick-wall light guide injection mold according to claim 2, characterized in that: The oblique translation core-pulling mechanism (3) comprises a thin sheet (8) having a stepped structure and inserted into the molding cavity (2); the stepped structure is located at the end of the thin sheet (8) and a plurality of stepped planes (9) constituting the stepped structure are arranged corresponding to the rectangular push rod (5); and the thin sheet (8) is connected to one end away from the stepped plane (9) with a thin sheet driving component capable of driving the thin sheet (8) to move in a direction perpendicular to the stepped plane (9).

6. The combined secondary ejection mechanism of the automotive thick-wall light guide injection mold according to claim 5, characterized in that: The sheet drive assembly comprises a translation seat (10) and a drive rod (11) fixedly connected to the sheet (8); the drive rod (11) is tilted and slidably matched with the translation seat (10); the drive rod (11) is connected to the upper template via a connecting piece (12).

7. The combined secondary ejection mechanism of the automotive thick-wall light guide injection mold according to claim 6, characterized in that: The connecting member (12) comprises an L-shaped connecting seat (13), the driving rod (11) is fixed on the L-shaped connecting seat (13), and the L-shaped connecting seat (13) has an anti-retraction portion (14) that can abut against the outer end of the translation seat (10).

8. The combined secondary ejection mechanism of the automotive thick-wall light guide injection mold according to claim 6, characterized in that: The thin sheet (8) and the translation seat (10) are detachably connected via a plurality of screws.

9. The combined secondary ejection mechanism of the automotive thick-wall light guide injection mold according to claim 6, characterized in that: Limiting pressure plates (15) are also provided on both sides of the translation seat (10).

10. The combined secondary ejection mechanism of the automotive thick-wall light guide injection mold according to claim 1, characterized in that: The top plate (4) is also fixedly connected with a straight top rod (16) connected to the molding cavity (2).

Images