Injection molding mold for lens shell

Abstract

The utility model discloses an injection molding mold of a lens shell, which comprises an upper mold and a lower mold, the bottom of an upper mold core is upwards concavely provided with an upper molding groove, the upper mold is also provided with a pouring runner, and the pouring runner comprises a main runner and three branch runners connected with the main runner; the lower die is provided with a telescopic bolt capable of extending into the upper forming groove, a vertically-through movable groove is formed in the middle of the inner insert, the lower die is provided with an ejection assembly corresponding to the movable groove, and the ejection assembly comprises an ejection piece, an ejector pin connected to the bottom of the ejection piece and an ejector pin plate connected to the bottom of the ejector pin. The ejection piece comprises a disc body used for ejecting the lens shell and a rod body connected to the bottom of the disc body, and the disc body is located at the top of the telescopic hook and provided with an edge forming part; the lower die plate is provided with sliding block assemblies on the two opposite sides of the telescopic hook. The three glue inlet channels are more uniform in glue inlet, the product quality is improved, the ejection piece can be used for forming the lens shell and can also rapidly eject the lens shell out of the telescopic hook, and the structural design is ingenious.

Description

Technical Field

[0001] This utility model relates to the field of lens housing manufacturing technology, and in particular to an injection molding mold for a lens housing. Background Technology

[0002] A mold generally consists of two parts: an upper mold and a lower mold. These two parts can be separated or joined together. When separated, the part is removed, and when joined together, the blank is injected into the mold cavity to form the part. Demolding is a very common action in the actual processing of molds. It is generally achieved through an ejection mechanism. Existing ejection mechanisms use ejector rods to achieve the ejection action, but their ejection force is limited. For plastic parts with complex structures that are difficult to demold (such as products with internal threads, undercuts, etc.), ejection is difficult.

[0003] Therefore, a telescopic ejector has emerged in the prior art, which includes an inner insert and an outer insert fitted on the inner insert. The inner insert and the outer insert can slide relative to each other. The internal thread of the product is formed by a mechanical internal telescopic structure. The telescopic ejector generally uses a push plate structure for ejection. However, for lens housings, the lens housing includes an annular top wall and peripheral side walls that extend obliquely downward and outward from the annular top wall. It is difficult to set a push plate structure in the mold under this structure. Therefore, how to quickly demold the lens housing has become a key research direction in the industry.

[0004] Therefore, it is necessary to design a new technical solution to solve the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide an injection molding mold for a lens housing. The injection channel includes a main channel and three branch channels connected to the main channel. Glue is injected through these three channels, resulting in more uniform injection and improved product molding quality. The ejection assembly includes an ejector, an ejector pin connected to the bottom of the ejector, and an ejector plate connected to the bottom of the ejector pin. The ejector includes a disc for ejecting the lens housing and a rod connected to the bottom of the disc. The disc is located at the top of the telescopic bracket and has an edge forming section. The ejector can be used to mold the lens housing and can also quickly eject the lens housing from the telescopic bracket, demonstrating ingenious structural design.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An injection molding mold for a lens housing includes an upper mold and a lower mold. The upper mold includes an upper template and an upper mold core fixed to the upper template. The lower mold includes a lower template and a lower mold core fixed to the lower template.

[0008] The bottom of the upper mold core is recessed upward to form an upper molding groove. The upper mold is also provided with a gating channel, which includes a main channel and three branch channels connected to the main channel. The three branch channels are arranged at equal intervals around the outer periphery of the main channel. The branch channels are connected to a glue inlet channel. The output end of the glue inlet channel is exposed on the top wall of the upper molding groove. The upper mold core is also provided with a groove forming part that passes downward through the top wall of the upper molding groove.

[0009] The lower mold is provided with a telescopic bracket that can extend into the upper forming groove. The telescopic bracket includes an inner insert and a plurality of outer inserts that are slidably disposed on the outer periphery of the inner insert. The upper outer periphery of the plurality of outer inserts is provided with threaded forming parts. The middle part of the inner insert is provided with a vertically penetrating movable groove. The lower mold is provided with an ejector assembly corresponding to the movable groove. The ejector assembly includes an ejector, an ejector pin connected to the bottom of the ejector, and an ejector pin plate connected to the bottom of the ejector pin. The ejector includes a disc for ejecting the lens housing and a rod connected to the bottom of the disc. The disc is located at the top of the telescopic bracket and is provided with an edge forming part. The rod is slidably disposed in the movable groove.

[0010] The lower mold plate is provided with slider assemblies on opposite sides of the telescopic bracket. The slider assembly includes a sliding seat, an inclined guide post for driving the sliding seat to slide, and a locking member for locking the sliding seat. The sliding seat is slidably connected to the lower mold plate. The sliding seat has a guide hole that matches the inclined guide post. One end of the sliding seat near the lower mold core is connected to a notch forming part. The inclined guide post and the locking member are both provided on the upper mold. The upper forming groove, the groove forming part, the telescopic bracket, the edge forming part, the notch forming part, and the top wall of the upper mold core together constitute an injection mold cavity for forming a lens housing.

[0011] As a preferred embodiment, the side wall of the movable groove is provided with a guide groove that runs vertically through it, and a guide block that matches the guide groove is inserted radially into the rod body. The guide block is slidably connected to the guide groove.

[0012] As a preferred embodiment, the top of the lower template is recessed downwards to provide a slider mounting groove, and the sliding seat is slidably connected to the slider mounting groove. Correspondingly, the bottom of the upper template is recessed upwards to provide a first clearance groove, and the top of the sliding seat protrudes into the first clearance groove.

[0013] As a preferred embodiment, the top of the upper template is provided with a top plate and a first mounting plate arranged sequentially from top to bottom, and the branch channel is located between the top plate and the first mounting plate.

[0014] As a preferred embodiment, the bottom of the lower template is provided with a second mounting plate and a third mounting plate arranged sequentially from top to bottom, and the telescopic bracket is installed between the second mounting plate and the third mounting plate.

[0015] As a preferred embodiment, a base plate is provided below the third mounting plate, and two square irons arranged at intervals are sandwiched between the third mounting plate and the base plate. The ejector plate is located on top of the base plate and placed between the two square irons.

[0016] As a preferred embodiment, the ejector plate includes an upper ejector plate and a lower ejector plate, with the bottom of the ejector pin disposed between the upper ejector plate and the lower ejector plate.

[0017] As a preferred embodiment, the lower mold core is provided with a clearance opening for the telescopic insert to pass through, and the lower mold core is provided with a second clearance groove on the opposite sides of the clearance opening, and the notch forming part is slidably disposed in the second clearance groove.

[0018] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0019] The main features include a main flow channel and three branch channels connected to it, which allow for more uniform glue injection and improve product molding quality. The ejector assembly includes an ejector, an ejector pin connected to the bottom of the ejector, and an ejector plate connected to the bottom of the ejector pin. The ejector includes a disc for ejecting the lens housing and a rod connected to the bottom of the disc. The disc is located at the top of the telescopic collet and has an edge forming part. The ejector can be used to form the lens housing and can also quickly eject the lens housing from the telescopic collet, demonstrating a clever structural design.

[0020] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a perspective view of a preferred embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of a preferred embodiment of the present invention;

[0023] Figure 3 This is another cross-sectional schematic diagram of a preferred embodiment of the present invention;

[0024] Figure 4 This is a three-dimensional schematic diagram of the upper mold of a preferred embodiment of the present invention;

[0025] Figure 5 This is an exploded view of the upper mold of a preferred embodiment of the present invention;

[0026] Figure 6 This is a three-dimensional schematic diagram of the lower mold of a preferred embodiment of the present invention.

[0027] Explanation of reference numerals in the attached diagram:

[0028] 10. Upper mold 11. Upper template

[0029] 111. First clearance groove; 12. Upper mold core

[0030] 121. Upper forming groove; 122. Groove forming section

[0031] 13. Top plate 14. First mounting plate

[0032] 20. Lower mold 21. Lower template

[0033] 211. Slider mounting slot; 22. Lower mold core

[0034] 221. Clearance opening; 222. Second clearance groove

[0035] 23. Second mounting plate 24. Third mounting plate

[0036] 25. Base plate 26. Square iron

[0037] 30. Casting runner; 31. Main runner

[0038] 32. Branch channel; 33. Glue inlet channel

[0039] 40. Telescopic section; 41. Thread forming part

[0040] 42. Movable groove; 421. Guide groove

[0041] 50. Ejector assembly 51. Ejector component

[0042] 511, Disc body; 512, Rod body

[0043] 513. Edge forming part; 514. Guide block

[0044] 52. Threshold

[0045] 53. Ejector plate 531. Upper ejector plate

[0046] 532, Lower ejector plate; 60, Lens housing

[0047] 70. Slider assembly; 71. Slider base

[0048] 711, Guide Hole; 72, Inclined Guide Post

[0049] 73. Locking component 74. Notch forming part. Detailed Implementation

[0050] First, it should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] Please refer to Figures 1 to 6 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including an upper mold 10 and a lower mold 20.

[0052] The upper mold 10 includes an upper template 11 and an upper mold core 12 fixed to the upper template 11, and the lower mold 20 includes a lower template 21 and a lower mold core 22 fixed to the lower template 21.

[0053] The bottom of the upper mold core 12 is recessed with an upper forming groove 121, and the upper mold 10 is also provided with a gating channel 30. (See reference) Figure 5 As shown, the casting runner 30 includes a main runner 31 and three branch runners 32 connected to the main runner 31. The three branch runners 32 are arranged at equal intervals around the outer periphery of the main runner 31. The branch runners 32 are connected to a glue inlet channel 33. The output end of the glue inlet channel 33 is exposed on the top wall of the upper molding groove 121. The upper mold core 12 is also provided with a groove forming part 122 that passes downward through the top wall of the upper molding groove 121.

[0054] The lower mold 20 is provided with a telescopic bracket 40 that can extend into the upper forming groove 121. The telescopic bracket 40 is an existing mature technology and will not be described in detail here. The telescopic bracket 40 includes an inner insert and a plurality of outer inserts that are slidably disposed on the outer periphery of the inner insert. The upper outer periphery of the plurality of outer inserts is provided with a threaded forming part 41. The middle part of the inner insert is provided with a vertically penetrating movable groove 42. The lower mold 20 is provided with an ejector assembly 50 corresponding to the movable groove 42. The ejector assembly 50 includes an ejector 51, an ejector pin 52 connected to the bottom of the ejector 51, and an ejector pin plate 53 connected to the bottom of the ejector pin 52. The ejector 51 includes a disc 511 for ejecting the lens housing 60 and a rod 512 connected to the bottom of the disc 511. The disc 511 is located at the top of the telescopic bracket 40 and is provided with an edge forming part 513. The rod 512 is slidably disposed in the movable groove 42.

[0055] The lower mold plate 21 is provided with slider assemblies 70 on opposite sides of the telescopic bracket 40. Each slider assembly 70 includes a sliding seat 71, an inclined guide post 72 for driving the sliding seat 71 to slide, and a locking member 73 for locking the sliding seat 71. The sliding seat 71 is slidably connected to the lower mold plate 21. The sliding seat 71 has a guide hole 711 that matches the inclined guide post 72. A notch forming part 74 is connected to one end of the sliding seat 71 near the lower mold core 22. The inclined guide post 72... Both the upper mold and the locking element 73 are provided on the upper mold 10. The upper forming groove 121, the groove forming part 122, the telescopic bracket 40, the edge forming part 513, the notch forming part 74, and the top wall of the upper mold core 12 together constitute the injection mold cavity for forming the lens housing 60. The lens product includes an annular top wall and a peripheral side wall extending obliquely downward and outward from the annular top wall. The annular top wall has a groove that runs vertically through it. The inner wall surface of the peripheral side wall is provided with an internal thread. The bottom of the peripheral side wall has irregular notches on opposite sides.

[0056] See Figure 3 As shown, the side wall of the movable groove 42 is provided with a guide groove 421 that runs vertically through it. The rod body 512 is radially inserted with a guide block 514 that matches the guide groove 421. The guide block 514 is slidably connected to the guide groove 421. The arrangement of the guide block 514 and the guide groove 421 allows the rod body 512 to move up and down precisely.

[0057] See Figure 1 and Figure 2 As shown, the top of the upper template 11 is provided with a top plate 13 and a first mounting plate 14 arranged vertically. The branch channel 32 is located between the top plate 13 and the first mounting plate 14. The top of the lower template 21 is provided with a downward recessed slider mounting groove 211. The sliding seat 71 is slidably connected to the slider mounting groove 211. Correspondingly, the bottom of the upper template 11 is provided with an upward recessed first clearance groove 111. The top of the sliding seat 71 protrudes into the first clearance groove 111.

[0058] See Figure 2 As shown, the bottom of the lower template 21 is provided with a second mounting plate 23 and a third mounting plate 24 arranged vertically. The telescopic bracket 40 is installed between the second mounting plate 23 and the third mounting plate 24. A base plate 25 is provided below the third mounting plate 24. Two square irons 26 arranged at intervals are sandwiched between the third mounting plate 24 and the base plate 25. The ejector plate 53 is located on top of the base plate 25 and placed between the two square irons 26. The ejector plate 53 includes an upper ejector plate 531 and a lower ejector plate 532. The bottom of the ejector pin 52 is located between the upper ejector plate 531 and the lower ejector plate 532.

[0059] See Figure 2 and Figure 6As shown, the lower mold core 22 has a clearance opening 221 for the telescopic tool 40 to pass through. The lower mold core 22 has a second clearance groove 222 on the opposite sides of the clearance opening 221. The notch forming part 74 is slidably disposed in the second clearance groove 222.

[0060] The key design feature of this utility model is:

[0061] The main features include a main flow channel and three branch channels connected to it, which allow for more uniform glue injection and improve product molding quality. The ejector assembly includes an ejector, an ejector pin connected to the bottom of the ejector, and an ejector plate connected to the bottom of the ejector pin. The ejector includes a disc for ejecting the lens housing and a rod connected to the bottom of the disc. The disc is located at the top of the telescopic collet and has an edge forming part. The ejector can be used to form the lens housing and can also quickly eject the lens housing from the telescopic collet, demonstrating a clever structural design.

[0062] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An injection molding die for a lens housing, comprising an upper die and a lower die, wherein the upper die includes an upper template and an upper die core fixed to the upper template, and the lower die includes a lower template and a lower die core fixed to the lower template; characterized in that: The bottom of the upper mold core is recessed upward to form an upper molding groove. The upper mold is also provided with a gating channel, which includes a main channel and three branch channels connected to the main channel. The three branch channels are arranged at equal intervals around the outer periphery of the main channel. The branch channels are connected to a glue inlet channel. The output end of the glue inlet channel is exposed on the top wall of the upper molding groove. The upper mold core is also provided with a groove forming part that passes downward through the top wall of the upper molding groove. The lower mold is provided with a telescopic bracket that can extend into the upper forming groove. The telescopic bracket includes an inner insert and a plurality of outer inserts that are slidably disposed on the outer periphery of the inner insert. The upper outer periphery of the plurality of outer inserts is provided with threaded forming parts. The middle part of the inner insert is provided with a vertically penetrating movable groove. The lower mold is provided with an ejector assembly corresponding to the movable groove. The ejector assembly includes an ejector, an ejector pin connected to the bottom of the ejector, and an ejector pin plate connected to the bottom of the ejector pin. The ejector includes a disc for ejecting the lens housing and a rod connected to the bottom of the disc. The disc is located at the top of the telescopic bracket and is provided with an edge forming part. The rod is slidably disposed in the movable groove. The lower mold plate is provided with slider assemblies on opposite sides of the telescopic bracket. The slider assembly includes a sliding seat, an inclined guide post for driving the sliding seat to slide, and a locking member for locking the sliding seat. The sliding seat is slidably connected to the lower mold plate. The sliding seat has a guide hole that matches the inclined guide post. One end of the sliding seat near the lower mold core is connected to a notch forming part. The inclined guide post and the locking member are both provided on the upper mold. The upper forming groove, the groove forming part, the telescopic bracket, the edge forming part, the notch forming part, and the top wall of the upper mold core together constitute an injection mold cavity for forming a lens housing.

2. The injection molding mold for a lens housing according to claim 1, characterized in that: The side wall of the movable groove is provided with a guide groove that runs vertically through it, and a guide block that matches the guide groove is inserted radially into the rod body. The guide block is slidably connected to the guide groove.

3. The injection molding mold for a lens housing according to claim 1, characterized in that: The top of the lower template is recessed downwards and has a slider mounting groove. The sliding seat is slidably connected to the slider mounting groove. Correspondingly, the bottom of the upper template is recessed upwards and has a first clearance groove. The top of the sliding seat protrudes into the first clearance groove.

4. The injection molding mold for a lens housing according to claim 1, characterized in that: The top of the upper template is provided with a top plate and a first mounting plate arranged in sequence, and the branch channel is located between the top plate and the first mounting plate.

5. The injection molding mold for a lens housing according to claim 1, characterized in that: The bottom of the lower template is provided with a second mounting plate and a third mounting plate arranged vertically, and the telescopic bracket is installed between the second mounting plate and the third mounting plate.

6. The injection molding mold for a lens housing according to claim 5, characterized in that: A base plate is provided below the third mounting plate, and two square irons arranged at intervals are sandwiched between the third mounting plate and the base plate. The ejector plate is located on top of the base plate and placed between the two square irons.

7. The injection molding mold for a lens housing according to claim 1 or 6, characterized in that: The ejector plate includes an upper ejector plate and a lower ejector plate, and the bottom of the ejector pin is disposed between the upper ejector plate and the lower ejector plate.

8. The injection molding mold for a lens housing according to claim 1, characterized in that: The lower mold core has an opening for the telescopic insert to pass through, and the lower mold core has a second clearance groove on the opposite sides of the clearance opening. The notch forming part is slidably disposed in the second clearance groove.

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