Lens support mold with blowing function

Abstract

The lens support mold comprises a front mold mechanism, a rear mold mechanism and a mold core assembly used for injection molding of a lens support, the front mold mechanism comprises a front mold plate, a front mold core, a glue inlet nozzle and an air blowing device, the front mold core is installed at the bottom of the front mold plate, and the air blowing device comprises an air blowing pipe and an air nozzle. The multiple air blowing pipes are evenly arranged in the front mold core, the rear mold mechanism comprises a rear mold plate and a rear mold core, the front mold core and the rear mold core are matched to form a mold cavity, the mold core assembly is installed in the mold cavity, and a forming groove position is formed in the bottom of the front mold core in a concave mode. The outlet end of the glue inlet nozzle and the air outlet end of each air blowing pipe are communicated with the forming groove position, and the air outlet end of each air blowing pipe is provided with an air nozzle and located above the mold core assembly. According to the utility model, a vacuum environment can be effectively prevented from appearing above the mold cavity, so that a product can be smoothly demolded, the qualified rate of the product is improved, and the problem that the product is easy to adhere to the front mold core due to the vacuum environment is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and more specifically to a lens bracket mold with air blowing. Background Art

[0002] Injection mold is a tool for producing plastic products. Injection molding refers to the process of injecting heated and melted plastic into the mold cavity under high pressure by the injection molding machine. After cooling and solidification, the molded product is obtained. During injection molding, the upper mold and the lower mold are closed to form the pouring system and the cavity. When the mold is opened, the front mold and the front mold are separated to remove the plastic product. The lens bracket injection molding products such as Figure 1 and Figure 2 As shown, this is a special plastic product used to produce eyeglass lens brackets. However, this injection molded product will stick seriously to the front mold during demolding. Previously, the methods of polishing the front mold, tanning the back mold, and making hooks on the back mold ejector could not completely solve the problem of product sticking to the front mold. The problem of sticking to the front mold will cause product deformation and low pass rate. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a lens holder mold with air blowing that can effectively avoid the vacuum environment above the mold cavity, so that the product can be demoulded smoothly, the possibility of product deformation is reduced, and the product qualification rate is improved.

[0004] To achieve the above-mentioned purpose, the utility model provides a lens bracket mold with air blowing, comprising a front mold mechanism, a rear mold mechanism and a core assembly for injection molding of the lens bracket, the front mold mechanism comprising a front template, a front mold core, a glue feed nozzle and an air blowing device, the glue feed nozzle is installed at the middle feed port of the front template, the front mold core is installed at the bottom of the front template, the air blowing device comprises an air blowing pipe and an air jet nozzle, the air blowing pipe is provided with a plurality of and is evenly arranged inside the front mold core, the air inlet end of the air blowing pipe passes through the side wall of the front mold core and then passes through the side wall of the front template The rear mold mechanism includes a rear mold plate and a rear mold core, the rear mold core is installed on the top of the rear mold plate and is located directly below the front mold core, the front mold core and the rear mold core cooperate to form a mold cavity, the core assembly is installed in the mold cavity, the bottom of the front mold core is recessed with a molding groove corresponding to the shape of the upper part of the core assembly, the outlet end of the glue inlet nozzle is connected with the molding groove, the air outlet end of the blowing pipe is provided with several and is respectively connected with the molding groove, each air outlet end of the blowing pipe is respectively equipped with an air nozzle and is respectively located above the core assembly.

[0005] Preferably, the core assembly includes a core seat and core plug-ins corresponding to the lens portion, wherein a plurality of core plug-ins are arranged in an array, two by two, and inserted into corresponding core holes opened through the core seat, wherein the lower end portion of each core plug-in is in close contact with the lower inner wall of the core hole, and a bracket forming groove is provided between the edge of the upper end portion of each core plug-in and the upper inner wall of the core hole.

[0006] Preferably, it also includes a supporting plate and several sealing rings, the supporting plate is arranged between the interior of the rear mold core, and several cold runner holes are opened on the two outer side walls of the supporting plate. The interior of the supporting plate is provided with several cold runners passing through the cold runner holes, and the several cold nozzles of the cold runners are respectively extended into the plug groove at the bottom of the core plug block. The top surface of the supporting plate is provided with several annular grooves corresponding to the edges of the protruding parts of the cold nozzles. Each sealing ring is respectively mounted on the cold nozzle and respectively clamped in the annular groove and interference fit with the annular groove.

[0007] Preferably, the interior of the front mold core is provided with a plurality of first hot runners passing through the first hot runner grooves on the two outer walls of the front template, and the interior of the rear mold core is provided with a plurality of second hot runners passing through the second hot runner grooves on the two outer walls of the rear template.

[0008] Preferably, the front mold mechanism also includes a front top plate and a sprue sleeve, the front top plate is arranged on the top of the front template, and a glue injection port is coaxially opened on the front template and the front top plate, and the sprue sleeve is downwardly inserted into the glue injection port of the front template and the front top plate and connected to the glue inlet nozzle.

[0009] Preferably, the four corners of the front top plate are respectively provided with longitudinal first guide shafts pointing downwards, and the four corners of the front template are respectively provided with first bushings corresponding to the first guide shafts, and the first guide shafts are respectively inserted into the first bushings.

[0010] Preferably, the rear mold mechanism further includes a rear mold bottom plate, an ejector bottom plate, an ejector panel, an ejector, a square iron, and a limiting column. The square iron is provided in two pieces and is installed at intervals between the top of the rear mold bottom plate and the bottom of the rear mold plate. A number of ejectors are provided and are installed on the top of the ejector bottom plate through the ejector panel. The upper ends of the several ejectors pass through the supporting plate and the rear mold core and can extend into the mold core assembly. The limiting column is located between the rear mold plate and the rear mold core and passes through the ejector bottom plate and the ejector panel respectively.

[0011] Preferably, longitudinal second guide shafts are upwardly provided at the four corners of the rear template, and second bushings corresponding to the second guide shafts are respectively provided at the four corners of the front template, and the second guide shafts are respectively inserted into the second bushings.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model has a simple structure, novelty and reasonable design. When the mold is opened, the front mold core continuously blows air toward the top of the injection molded product through the blowing device, which can effectively avoid the vacuum environment above the mold cavity, so that the product can be demoulded smoothly, reducing the possibility of product deformation, and solving the problem that the product is easy to adhere to the front mold core in a vacuum environment and cannot be demoulded smoothly by conventional methods. The utility model has safe and reliable operation, greatly improves the product qualification rate, and can realize large-scale and standardized production of enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the front structure of a lens holder mold with air blowing provided by an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the back structure of a lens holder mold with air blowing provided by an embodiment of the utility model;

[0017] Figure 3 This is a structural schematic diagram of a lens holder mold with air blowing provided by an embodiment of the utility model;

[0018] Figure 4 This is a schematic cross-sectional view of a lens holder mold with air blowing provided by an embodiment of the present invention (the front template and carrier plate are omitted);

[0019] Figure 5 This is a schematic diagram of the exploded structure of a lens holder mold with air blowing provided by an embodiment of the utility model;

[0020] Figure 6 This is an enlarged schematic diagram of a core component of a lens holder mold with air blowing provided by an embodiment of the present utility model;

[0021] Figure 7 This is a partial structural explosion diagram of a lens holder mold with air blowing provided by the embodiment of the utility model. Figure 1 ;

[0022] Figure 8 This is a partial structural explosion diagram of a lens holder mold with air blowing provided by the embodiment of the utility model. Figure 2 ;

[0023] Figure 9 The utility model is a schematic structural diagram of a front template of a lens holder mold with air blowing provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] Please refer to Figure 1 An embodiment of the present invention provides a lens holder mold with air blowing, including a front mold mechanism 1, a rear mold mechanism 2 and a core assembly 3 for injection molding of the lens holder. The following is a detailed description of the various components of this embodiment in conjunction with the accompanying drawings.

[0026] like Figures 3 to 5 As shown, the front mold mechanism 1 may include a front template 11, a front mold core 12, a glue feed nozzle 13 and a blowing device 14. The glue feed nozzle 13 is installed at the middle feed port of the front template 11, and the front mold core 12 is installed at the bottom of the front template 11. The blowing device 14 includes a blowing pipe 141 and an air jet nozzle 142. The blowing pipe 141 is provided with a plurality of and is evenly arranged inside the front mold core 12. The air inlet end of the blowing pipe 141 passes through the side wall of the front mold core 12 and extends from the side wall of the front template 11. The rear mold mechanism 2 includes a rear template 21 and a rear mold core 22. The rear mold core 22 It is installed on the top of the rear mold plate 21 and is located directly below the front mold core 12. The front mold core 12 and the rear mold core 22 cooperate to form a mold cavity. The core assembly 3 is installed in the mold cavity. The bottom of the front mold core 12 is recessed with a molding groove 121 with a shape corresponding to the shape of the upper part of the core assembly 3. The outlet end of the glue nozzle 13 is connected to the molding groove 121. The air outlet end of the blowing pipe 141 is provided with several and is respectively connected to the molding groove 121. The air outlet end of each blowing pipe 141 is respectively installed with an air nozzle 142 and is respectively located above the core assembly 3.

[0027] Among them, the air nozzles 142 are preferably set to four and respectively above the four corners of the core assembly 3.

[0028] When the front mold mechanism 1 and the rear mold mechanism 2 are closed, the closing surfaces of the front mold core 12 and the rear mold core 22 engage with each other to achieve closing, thereby forming a complete injection cavity.

[0029] During specific implementation, each air nozzle 142 is aimed at the four corners of the product 10. When the mold is opened, an external air supply device, such as a common air compressor on the market, can deliver compressed air through the blow pipe 141 and spray gas through each air nozzle 142, thereby providing gas to the inside of the mold and preventing the product 10 and the front mold core 12 from generating a vacuum in the molding area, reducing the possibility of vacuum adsorption, and reducing the adhesion between the mold front mold mechanism 1 and the product 10.

[0030] like Figure 6 As shown, the core assembly 3 may include a core seat 31 and a core plug-in block 32 corresponding to the lens portion. A plurality of core plug-ins 32 are provided and are arranged in an array, two by two, in the core holes 311 correspondingly opened through the core seat 31. The lower end of each core plug-in block 32 is in close contact with the lower inner wall of the core hole 311, and a bracket forming groove 33 is provided between the edge of the upper end of each core plug-in block 32 and the upper inner wall of the core hole 311.

[0031] Among them, the core seat 31 is the basic part of the core assembly 3 and can provide a reliable installation position for the core plug 32. The bracket molding groove 33 ensures that the molten rubber can flow smoothly into the molding area during molding, thereby improving the injection molding quality. The array design allows multiple lens brackets to be molded at the same time, thereby improving production efficiency.

[0032] like Figure 7 and Figure 8 As shown, it can also include a support plate 4 and several sealing rings 5. The support plate 4 is arranged between the interior of the rear mold core 22. Several cold runner holes 41 are opened on the two outer side walls of the support plate 4. The interior of the support plate 4 is provided with several cold runners 6 passing through the cold runner holes 41. Several cold nozzles 61 of the cold runner 6 are respectively extended into the plug groove 321 at the bottom of the core plug 32. The top surface of the support plate 4 is provided with several annular grooves 43 corresponding to the edges of the protruding parts of the cold nozzles 61. Each sealing ring 5 is respectively mounted on the cold nozzle 61 and is respectively clamped in the annular groove 43 and interference fits with the annular groove 43.

[0033] Among them, the cold nozzle 61 extends into the plug groove 321 of the core plug 32 to directly introduce the coolant, thereby achieving rapid heat dissipation and cooling during demoulding. The sealing ring 5 can play a sealing effect, prevent the coolant from leaking, and ensure the vacuum of the rear mold mechanism.

[0034] Preferably, the interior of the front mold core 12 can be provided with several first hot runners 7 passing through the first hot runner grooves 112 on the two outer walls of the front template 11, and the interior of the rear mold core 22 can be provided with several second hot runners 8 passing through the second hot runner grooves 212 on the two outer walls of the rear template 21.

[0035] Specifically, the front mold mechanism 1 can also include a front top plate 15 and a sprue sleeve 16. The front top plate 15 is arranged at the bottom of the front template 11. A glue injection port 151 is coaxially opened on the front template 11 and the front top plate 15. The sprue sleeve 16 is downwardly inserted into the glue injection port 151 of the front template 11 and the front top plate 15 and connected to the glue inlet nozzle 13, which can ensure that the molten glue flows into the mold evenly and stably.

[0036] like Figure 9 As shown, the four corners of the front top plate 15 can be respectively provided with longitudinal first guide shafts 152 downwardly, and the four corners of the front template 11 are respectively provided with first sleeves 113 corresponding to the first guide shafts 152, and the first guide shafts 152 are respectively inserted into the first sleeves 113.

[0037] Specifically, the rear mold mechanism 2 can also include a rear mold base plate 20, an ejector base plate 23, an ejector panel 24, an ejector 25, a square iron 26, and a limiting column 27. The square iron 26 is provided in two pieces and is installed at intervals between the top of the rear mold base plate 20 and the bottom of the rear mold plate 21. There are several ejectors 25 and they are installed on the top of the ejector base plate 23 through the ejector panel 24. The upper ends of the several ejectors 25 pass through the supporting plate 4 and the rear mold core 22 and can extend into the core assembly 3. The limiting column 27 is located between the rear mold plate 21 and the rear mold core 22 and passes through the ejector base plate 23 and the ejector panel 24 respectively.

[0038] In a specific implementation, the ejector pin 25 can eject the injection-molded product 10 during demoulding, so that the product 10 can be ejected and separated from the core component 3 more easily, thereby achieving demoulding and improving work efficiency.

[0039] Furthermore, longitudinal second guide shafts 213 may be upwardly provided at the four corners of the rear template 21, and second sleeves 114 corresponding to the second guide shafts 213 may be respectively provided at the four corners of the front template 11, and the second guide shafts 213 are respectively inserted into the second sleeves 114.

[0040] To sum up, the utility model can effectively avoid the vacuum environment above the mold cavity by continuously blowing air toward the top of the injection molded product through the blowing device when the mold is opened, so that the product can be demoulded smoothly, reducing the possibility of product deformation, and solving the problem that the product is easy to adhere to the front mold core in a vacuum environment and cannot be demoulded smoothly by conventional methods. Its operation is safe and reliable, greatly improving the product qualification rate, and can realize large-scale and standardized production of enterprises.

[0041] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A lens holder mold with air blowing, characterized by: The invention comprises a front mold mechanism (1), a rear mold mechanism (2) and a core mold assembly (3) for injection molding of a lens bracket, wherein the front mold mechanism (1) comprises a front mold plate (11), a front mold core (12), a glue feed nozzle (13) and an air blowing device (14), wherein the glue feed nozzle (13) is installed at the middle feed port of the front mold plate (11), the front mold core (12) is installed at the bottom of the front mold plate (11), and the air blowing device (14) comprises an air blowing pipe (141) and an air jet nozzle (142), wherein a plurality of air blowing pipes (141) are provided and are evenly arranged inside the front mold core (12), and an air inlet end of the air blowing pipe (141) passes through the side wall of the front mold core (12) and then extends out from the side wall of the front mold plate (11), and the rear mold mechanism (2) comprises an air blowing pipe (141) and an air jet nozzle (142). The invention comprises a rear template (21) and a rear mold core (22), wherein the rear mold core (22) is installed on the top of the rear template (21) and is located directly below the front mold core (12), and the front mold core (12) and the rear mold core (22) cooperate to form a mold cavity, and the core assembly (3) is installed in the mold cavity, and the bottom of the front mold core (12) is concavely provided with a molding groove (121) having a shape corresponding to the shape of the upper part of the core assembly (3), the outlet end of the glue feeding nozzle (13) is connected to the molding groove (121), and the air outlet end of the blowing pipe (141) is provided with a plurality of air outlet ends and is respectively connected to the molding groove (121), and the air outlet end of each blowing pipe (141) is respectively provided with an air nozzle (142) and is respectively located above the core assembly (3).

2. The lens holder mold with air blowing according to claim 1, characterized in that: The core assembly (3) comprises a core seat (31) and core inserts (32) corresponding to lens portions. The core inserts (32) are provided in a plurality and arranged in an array, two by two, and inserted into corresponding core holes (311) extending through the core seat (31). The lower end of each core insert (32) is in close contact with the lower inner wall of the core hole (311), and a bracket forming groove (33) is provided between the edge of the upper end of each core insert (32) and the upper inner wall of the core hole (311).

3. The lens holder mold with air blowing according to claim 2, characterized in that: It also includes a support plate (4) and a plurality of sealing rings (5), wherein the support plate (4) is arranged between the interior of the rear mold core (22), a plurality of cold runner holes (41) are provided on the two outer side walls of the support plate (4), a plurality of cold runners (6) passing through the cold runner holes (41) are provided inside the support plate (4), a plurality of cold nozzles (61) of the cold runners (6) are respectively extended into the plug groove (321) at the bottom of the core plug (32), and a plurality of annular grooves (43) corresponding to the edges of the protruding parts of the cold nozzles (61) are provided on the top surface of the support plate (4), and each sealing ring (5) is respectively mounted on the cold nozzle (61) and respectively clamped in the annular groove (43) and interference fit with the annular groove (43).

4. The lens holder mold with air blowing according to claim 1, characterized in that: The interior of the front mold core (12) is provided with a plurality of first hot runners (7) passing through the first hot runner grooves (112) on the two outer walls of the front mold plate (11), and the interior of the rear mold core (22) is provided with a plurality of second hot runners (8) passing through the second hot runner grooves (212) on the two outer walls of the rear mold plate (21).

5. The lens holder mold with air blowing according to claim 1, characterized in that: The front mold mechanism (1) further comprises a front top plate (15) and a sprue sleeve (16), wherein the front top plate (15) is arranged on the top of the front mold plate (11), and a glue injection port (151) is coaxially provided on the front mold plate (11) and the front top plate (15), and the sprue sleeve (16) is inserted downward into the glue injection port (151) of the front mold plate (11) and the front top plate (15) and is connected to the glue feed nozzle (13).

6. The lens holder mold with air blowing according to claim 5, characterized in that: The four corners of the front top plate (15) are respectively provided with longitudinal first guide shafts (152) pointing downwards, and the four corners of the front template (11) are respectively provided with first shaft sleeves (113) corresponding to the first guide shafts (152), and the first guide shafts (152) are respectively inserted into the first shaft sleeves (113).

7. The lens holder mold with air blowing according to claim 2, characterized in that: The rear mold mechanism (2) further comprises a rear mold base plate (20), an ejector base plate (23), an ejector panel (24), an ejector (25), a square iron (26), and a limiting column (27). The square iron (26) is provided in two pieces and is installed at intervals between the top of the rear mold base plate (20) and the bottom of the rear mold plate (21). The ejector (25) is provided in a plurality and is installed on the top of the ejector base plate (23) through the ejector panel (24). The upper ends of the plurality of ejector pins (25) pass through the support plate (4) and the rear mold core (22) and can extend into the mold core assembly (3). The limiting column (27) is located between the rear mold base plate (20) and the rear mold core (22) and passes through the ejector base plate (23) and the ejector panel (24) respectively.

8. The lens holder mold with air blowing according to claim 1, characterized in that: The four corners of the rear template (21) are upwardly provided with longitudinal second guide shafts (213), and the four corners of the front template (11) are respectively provided with second shaft sleeves (114) corresponding to the second guide shafts (213), and the second guide shafts (213) are respectively inserted into the second shaft sleeves (114).

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