Injection mold for automobile lamp lens

Abstract

The utility model provides an injection mold for an automobile lamp lens, and belongs to the technical field of molds. The lens forming mold comprises an upper mold plate and a lower mold plate, an upper insert is arranged on the upper mold plate, two movable lens forming assemblies capable of being combined with the upper insert to form a forming cavity are symmetrically arranged on the lower mold plate, and each movable lens forming assembly comprises a lower insert and two movable inserts symmetrically arranged between the upper insert and the lower insert. An insert driving assembly connected with the movable insert is arranged on the upper die plate, and a vertical parting surface is arranged at the joint of the movable insert and the forming cavity. After injection molding of the automobile lamp lens is completed in the molding cavity formed by combining the movable lens molding assembly and the upper insert, the movable insert can be driven by the insert driving assembly to move in the direction away from the molding cavity in the horizontal direction, so that a product at a vertical parting surface can be separated from a mold under small pulling force; therefore, the product is not damaged when being ejected out.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an injection mold for an automobile lamp lens. Background Art

[0002] Automobile headlight lenses are generally produced by injection molding. When some headlight lenses with large thickness and vertically parted side walls are produced using conventional molds, huge pulling force will be generated at the vertical parting surface between the side wall of the headlight lens and the lower mold plate when the product is ejected, which can easily cause damage to the headlight lens during ejection.

[0003] For example, a Chinese patent discloses a double-layer injection mold for a headlight lens [application number: 202121372077.3], including an injection mold body, an upper mold is provided at the upper end of the injection mold body, the lower end of the upper mold is connected to the lower mold, the lower mold is connected to the base, a fixing component is fixed on the outer wall of the upper end of the base, the base is fixed to the lower mold through the fixing component, and a storage component is provided inside the outer wall of the lower mold; through the setting of the fixing component, the fixing component includes a fixing plate, a first sliding groove, a first sliding block, a locking rod, a spring, a locking groove, a pull rod, a slot and a limit rod. Utility Model Content

[0004] The utility model aims to provide an injection mold for an automobile lamp lens in view of the above problems.

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

[0006] An injection mold for an automobile headlight lens comprises an upper mold plate and a lower mold plate, wherein the upper mold plate is provided with an upper insert, and the lower mold plate is symmetrically provided with two movable lens molding assemblies which can be combined with the upper insert to form a molding cavity, wherein the movable lens molding assembly comprises a lower insert and two movable inserts symmetrically arranged between the upper insert and the lower insert, and the upper mold plate is provided with an insert driving assembly connected to the movable insert, and a vertical parting surface is provided at the connection between the movable insert and the molding cavity.

[0007] In the above-mentioned automobile headlight lens injection mold, the insert driving assembly includes two driving plates vertically fixed on the upper mold plate, and the two driving plates are respectively arranged on both sides of the movable insert. The two sides of the movable insert are inclined with inwardly recessed inclined slide grooves, and the driving plate is fixedly connected with a driving slider inserted into the inclined slide groove. When the driving plate moves vertically upward, the movable insert moves away from the molding cavity.

[0008] In the above-mentioned automobile headlight lens injection mold, the driving slider is detachably connected to the driving plate through a plurality of bolts, the driving plate is detachably connected to the upper mold plate through a plurality of bolts, and the upper insert and the lower insert are detachably connected to the upper mold plate and the lower mold plate respectively through a plurality of bolts.

[0009] In the above-mentioned automobile headlight lens injection mold, four connecting plate molding structures connected to the side of the molding cavity are further provided between the movable insert and the lower insert.

[0010] In the above-mentioned automobile headlight lens injection mold, the connecting plate molding structure includes a connecting plate molding groove which is recessed inwardly and arranged on the lower insert, the inner side of the connecting plate molding groove is connected to the molding cavity, the top opening of the connecting plate molding groove is connected to the bottom surface of the movable insert, and the bottom of the connecting plate molding groove is also protruding with a connecting hole molding block which is against the bottom surface of the movable insert, and the cross-section of the connecting hole molding block is circular.

[0011] In the above-mentioned automobile headlight lens injection mold, a top plate is arranged on the lower side of the lower mold plate, and a plurality of connecting plate top rods corresponding to the connecting plate forming grooves are arranged on the top plate, and the connecting hole forming block is fixed to the top of the connecting plate top rod.

[0012] In the above-mentioned automobile lamp lens injection mold, an injection mechanism is also provided between the two movable lens molding assemblies, and the injection mechanism is connected to the bottom of the connecting plate molding groove located at the inner end of the molding cavity through a bottom glue feeding structure.

[0013] In the above-mentioned automobile headlight lens injection mold, the bottom glue inlet structure includes two main glue inlet channels respectively leading to two molding cavities, and the two ends of the main glue inlet channels are respectively located on the lower template and the lower insert, and the glue outlet of the main glue inlet channel is connected to the bottom of the connecting plate molding groove through the bottom inclined bottom glue inlet channel, and the height of the bottom glue inlet channel close to the side of the connecting plate molding groove is higher than the height of the main glue inlet channel.

[0014] In the above-mentioned automobile headlight lens injection mold, the injection mechanism includes an injection tube vertically arranged on the upper mold plate, and the injection tube is connected to the side of the main glue inlet flow channel away from the connecting plate molding groove.

[0015] In the above-mentioned automobile headlight lens injection mold, a residual material ejector rod is also fixedly connected to the top plate, and the top end of the residual material ejector rod is connected to a side of the main glue feed channel close to the bottom glue feed channel.

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

[0017] 1. After the injection molding of the headlight lens is completed, the molding cavity formed by the movable lens molding assembly and the upper insert can be driven by the insert driving assembly to move the movable insert in the horizontal direction away from the molding cavity, so that the product at the vertical parting surface can be separated from the mold under a smaller pulling force, so that the product will not be damaged during ejection.

[0018] 2. When the mold is opened, the upper mold plate moves upward to drive the two driving plates to move vertically upward. The vertical upward movement of the two driving plates can drive the movable insert to move horizontally away from the molding cavity through the cooperation between the driving slider and the inclined slide groove, so that the vertical parting surface at the connection between the movable insert and the molding cavity can be separated from the product.

[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 schematic diagram of the external structure of the utility model;

[0021] Figure 2 is a schematic diagram of the structure of a mobile lens molding assembly;

[0022] Figure 3 It is a partial structural schematic diagram of a mobile lens molding assembly;

[0023] Figure 4 It is a structural diagram of the lower template;

[0024] Figure 5 It is a partial structural schematic diagram of the utility model.

[0025] In the figure, an upper template 1, a lower template 2, a movable lens molding assembly 3, an upper insert 4, a lower insert 5, a movable insert 6, a molding cavity 7, an insert driving assembly 8, a vertical parting surface 9, a driving plate 10, an inclined slide groove 11, a driving slider 12, a connecting plate molding structure 13, a connecting plate molding groove 14, a connecting hole molding block 15, a top plate 16, a connecting plate ejector rod 17, an injection molding mechanism 18, a bottom glue feeding structure 19, a main glue feeding channel 20, a bottom glue feeding channel 21, an injection molding tube 22, and a residual material ejector rod 23. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5As shown, an injection mold for an automobile headlight lens comprises an upper template 1 and a lower template 2, wherein the upper template 1 is provided with an upper insert 4, and the lower template 2 is symmetrically provided with two movable lens molding components 3 which can be combined with the upper insert 4 to form a molding cavity 7, and the movable lens molding component 3 comprises a lower insert 5 and two movable inserts 6 symmetrically arranged between the upper insert 4 and the lower insert 5, and the upper template 1 is provided with an insert driving component 8 connected to the movable insert 6, and the connection between the movable insert 6 and the molding cavity 7 has a vertical parting surface 9.

[0027] In the utility model, after the injection molding of the headlight lens is completed, the molding cavity formed by the movable lens molding component 3 and the upper insert can drive the movable insert 6 to move horizontally away from the molding cavity through the insert driving component 8, so that the product at the vertical parting surface 9 can be separated from the mold under a smaller pulling force, so that the product will not be damaged when ejected.

[0028] Specifically, the insert driving assembly 8 includes two driving plates 10 vertically fixed on the upper mold plate 1, and the two driving plates 10 are respectively arranged on both sides of the movable insert 6. The movable insert 6 is obliquely provided with inwardly recessed inclined chutes 11 on both sides, and the driving plate 10 is fixedly connected with a driving slider 12 inserted into the inclined chutes 11. When the driving plate 10 moves vertically upward, the movable insert 6 moves away from the molding cavity 7. When the mold is opened, the upper mold plate moves upward to drive the two driving plates to move vertically upward. The vertical upward movement of the two driving plates can drive the movable insert 6 to move horizontally away from the molding cavity through the cooperation between the driving slider 12 and the inclined chutes 11, so that the vertical parting surface at the connection between the movable insert and the molding cavity can be separated from the product.

[0029] Preferably, the driving slider 12 is detachably connected to the driving plate 10 through a plurality of bolts, the driving plate 10 is detachably connected to the upper template 1 through a plurality of bolts, and the upper insert 4 and the lower insert 5 are detachably connected to the upper template 1 and the lower template 2 through a plurality of bolts, respectively. The use of bolts to detachably fix the driving slider 12, the driving plate 10, the upper insert 4 and the lower insert 5 can be easily replaced when they are partially damaged, thereby reducing the subsequent maintenance cost.

[0030] Specifically, four connecting plate forming structures 13 connected to the side of the forming cavity 7 are provided between the movable insert 6 and the lower insert 5. The connecting plate forming structure 13 can form a connecting plate with a connecting hole on the side of the headlight lens without the need for post-processing. The connecting plate forming structure 13 includes a connecting plate forming groove 14 that is recessed inwardly and is arranged on the lower insert 5. The inner side of the connecting plate forming groove 14 is connected to the forming cavity 7. The top opening of the connecting plate forming groove 14 is connected to the bottom surface of the movable insert 6. The bottom of the connecting plate forming groove 14 is also protruding with a connecting hole forming block 15 that abuts against the bottom surface of the movable insert 6. The cross-section of the connecting hole forming block 15 is circular. The connecting plate forming groove 14 cooperates with the movable insert to form a connecting plate on the side of the headlight lens, and the connecting hole forming block can form a connecting hole on the connecting plate.

[0031] Specifically, a top plate 16 is provided at the lower side of the lower mold plate 2, and a plurality of connecting plate top rods 17 corresponding to the connecting plate forming grooves 14 are provided on the top plate 16, and the connecting hole forming block 15 is fixed to the top of the connecting plate top rod 17. When the top plate moves upward, the connecting plate top rod 17 can apply a vertical upward thrust to the connecting plate part, so that the overall force is more uniform when the headlight lens is ejected.

[0032] Preferably, an injection molding mechanism 18 is further provided between the two movable lens molding assemblies 3, and the injection molding mechanism 18 is connected to the bottom of the connecting plate molding groove 14 located at the inner end of the molding cavity 7 through a bottom glue inlet structure 19. The injection molding mechanism 18 can inject the injection liquid into the mold, and the glue inlet formed by the injection molding can be formed at the bottom of the connecting plate through the bottom glue inlet structure 19, which can effectively reduce the influence of the glue inlet on the outer surface quality of the headlight lens.

[0033] Specifically, the bottom glue feeding structure 19 includes two main glue feeding channels 20 leading to two molding cavities 7 respectively, the two ends of the main glue feeding channels 20 are respectively located on the lower template 2 and the lower insert 5, the glue outlet of the main glue feeding channel 20 is connected to the bottom of the connecting plate molding groove 14 through the bottom glue feeding channel 21 arranged obliquely at the bottom, and the height of the bottom glue feeding channel 21 close to the side of the connecting plate molding groove 14 is higher than the height of the main glue feeding channel 20. The injection mechanism can inject the injection liquid into the main glue feeding channel, and then flow into the bottom glue feeding channel 21 through the main glue feeding channel, and finally inject the injection liquid from the bottom of the connecting plate molding groove into the molding cavity through the bottom glue feeding channel.

[0034] Specifically, the injection mechanism 18 includes an injection tube 22 vertically disposed on the upper mold plate 1, and the injection tube 22 is connected to the main glue inlet flow channel 20 away from the connecting plate molding groove 14. The injection tube can inject the injection liquid into the main glue inlet flow channel.

[0035] Preferably, a residual material ejector rod 23 is also fixedly connected to the top plate 16, and the top end of the residual material ejector rod 23 is connected to the side of the main glue feed channel 20 close to the bottom glue feed channel 21. When the top plate moves upward, the residual material ejector rod can also apply a vertical upward thrust to the residual material in the main glue feed channel so that the residual material can be ejected when the product is ejected.

[0036] The working principle of the utility model is that after the molding cavity formed by the movable lens molding assembly 3 and the upper insert is completed by injection molding of the headlight lens, the movable insert 6 can be driven by the insert driving assembly 8 to move horizontally away from the molding cavity, so that the product at the vertical parting surface 9 can be separated from the mold under a small pulling force, so that the product will not be damaged when ejected;

[0037] When the mold is opened, the upper mold plate moves upward to drive the two driving plates to move vertically upward. The vertical upward movement of the two driving plates can drive the moving insert 6 to move horizontally away from the molding cavity through the cooperation between the driving slider 12 and the inclined slide 11, so that the vertical parting surface at the connection between the moving insert and the molding cavity can be separated from the product. The driving slider 12, the driving plate 10, the upper insert 4 and the lower insert 5 can be detachably fixed with bolts, which can be easily replaced when they are partially damaged, thereby reducing the subsequent maintenance cost;

[0038] The connecting plate forming structure 13 can form a connecting plate with a connecting hole on the side of the headlight lens without post-processing. The connecting plate forming groove 14 cooperates with the movable insert to form a connecting plate on the side of the headlight lens. The connecting hole forming block can form a connecting hole on the connecting plate. When the top plate moves upward, the connecting plate push rod 17 can apply a vertical upward thrust to the connecting plate part so that the overall force is more uniform when the headlight lens is ejected. The injection molding mechanism 18 can inject the injection liquid into the mold, and the bottom glue feeding structure 19 can make the injection molding The formed glue port is formed at the bottom of the connecting plate, which can effectively reduce the influence of the glue port on the outer surface quality of the headlight lens. The injection molding mechanism can inject the injection molding liquid into the main glue feed channel, and then flow into the bottom glue feed channel 21 through the main glue feed channel, and finally inject the injection molding liquid into the molding cavity from the bottom of the connecting plate molding groove through the bottom glue feed channel. The injection molding tube can inject the injection molding liquid into the main glue feed channel. When the top plate moves upward, the residual material ejector rod can also apply a vertical upward thrust to the residual material in the main glue feed channel, so that the residual material can be ejected when the product is ejected.

[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 upper template 1, the lower template 2, the movable lens molding assembly 3, the upper insert 4, the lower insert 5, the movable insert 6, the molding cavity 7, the insert drive assembly 8, the vertical parting surface 9, the drive plate 10, the inclined slide 11, the drive slider 12, the connecting plate molding structure 13, the connecting plate molding groove 14, the connecting hole molding block 15, the top plate 16, the connecting plate ejector 17, the injection molding mechanism 18, the bottom glue feeding structure 19, the main glue feeding channel 20, the bottom glue feeding channel 21, the injection molding tube 22, the residual material ejector 23, etc. 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. An injection mold for a car headlight lens, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: The upper mold plate (1) is provided with an upper insert (4), and the lower mold plate (2) is symmetrically provided with two movable lens molding assemblies (3) which can be combined with the upper insert (4) to form a molding cavity (7). The movable lens molding assembly (3) includes a lower insert (5) and two movable inserts (6) symmetrically arranged between the upper insert (4) and the lower insert (5). The upper mold plate (1) is provided with an insert driving assembly (8) connected to the movable insert (6), and the connection between the movable insert (6) and the molding cavity (7) has a vertical parting surface (9).

2. The automobile headlight lens injection mold according to claim 1, characterized in that: The insert driving assembly (8) comprises two driving plates (10) vertically fixed on the upper mold plate (1), the two driving plates (10) are respectively arranged on both sides of the movable insert (6), and the two sides of the movable insert (6) are obliquely provided with inwardly recessed inclined slide grooves (11), and the driving plate (10) is fixedly connected with a driving slider (12) inserted into the inclined slide groove (11), and when the driving plate (10) moves vertically upward, the movable insert (6) moves in a direction away from the molding cavity (7).

3. The automobile headlight lens injection mold according to claim 2, characterized in that: The driving slider (12) is detachably connected to the driving plate (10) via a plurality of bolts, the driving plate (10) is detachably connected to the upper template (1) via a plurality of bolts, and the upper insert (4) and the lower insert (5) are detachably connected to the upper template (1) and the lower template (2) via a plurality of bolts, respectively.

4. The automobile headlight lens injection mold according to claim 2, characterized in that: Four connecting plate forming structures (13) connected to the side of the forming cavity (7) are also provided between the movable insert (6) and the lower insert (5).

5. The automobile headlight lens injection mold according to claim 4, characterized in that: The connecting plate forming structure (13) comprises a connecting plate forming groove (14) which is recessed inwardly and arranged on the lower insert (5); the inner side of the connecting plate forming groove (14) is connected to the forming cavity (7); the top opening of the connecting plate forming groove (14) is connected to the bottom surface of the movable insert (6); the bottom of the connecting plate forming groove (14) is also protrudingly provided with a connecting hole forming block (15) which abuts against the bottom surface of the movable insert (6); the cross section of the connecting hole forming block (15) is circular.

6. The automobile headlight lens injection mold according to claim 5, characterized in that: A top plate (16) is arranged on the lower side of the lower template (2), and a plurality of connecting plate top rods (17) corresponding to the connecting plate forming grooves (14) are arranged on the top plate (16), and the connecting hole forming blocks (15) are fixed to the top ends of the connecting plate top rods (17).

7. The automobile headlight lens injection mold according to claim 6, characterized in that: An injection molding mechanism (18) is also provided between the two movable lens molding assemblies (3), and the injection molding mechanism (18) is connected to the bottom of the connecting plate molding groove (14) located at the inner end of the molding cavity (7) through a bottom glue feeding structure (19).

8. The automobile headlight lens injection mold according to claim 7, characterized in that: The bottom glue feeding structure (19) comprises two main glue feeding channels (20) leading to two molding cavities (7) respectively. The two ends of the main glue feeding channels (20) are respectively located on the lower mold plate (2) and the lower insert (5). The glue outlet of the main glue feeding channel (20) is connected to the bottom of the connecting plate molding groove (14) through the bottom inclined bottom glue feeding channel (21). The height of the bottom glue feeding channel (21) close to the connecting plate molding groove (14) is higher than the height of the main glue feeding channel (20).

9. The automobile headlight lens injection mold according to claim 8, characterized in that: The injection molding mechanism (18) comprises an injection molding tube (22) vertically arranged on the upper mold plate (1), and the injection molding tube (22) is connected to the main glue inlet channel (20) at a side away from the connecting plate molding groove (14).

10. The automobile headlight lens injection mold according to claim 9, characterized in that: The top plate (16) is also fixedly connected with a surplus material push rod (23), and the top end of the surplus material push rod (23) is connected to a side of the main glue feed channel (20) close to the bottom glue feed channel (21).

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