Lens injection mold

Abstract

The utility model belongs to the technical field of optical lenses, and particularly relates to a lens injection mold which is characterized in that two upper circulating water pumps are mounted at the bottom end of a mounting plate, the two upper circulating water pumps are symmetrically arranged, and water outlets and water inlets of the two upper circulating water pumps are respectively connected with an upper water pumping pipe and an upper liquid conveying pipe; the opposite ends of the two upper water pumping pipes and the two upper liquid conveying pipes penetrate through the interior of the mounting plate and fixedly communicate with the two sides of the upper cooling bin. Cooling liquid in the liquid storage bin can be pumped out through the upper water pumping pipe of the right water pump and then discharged into the cooling bin through the upper liquid conveying pipe of the right water pump, cooling liquid in the upper cooling bin can be pumped out through the upper water pumping pipe of the left water pump and then discharged into the liquid storage bin through the upper liquid conveying pipe of the left water pump, and therefore the circulation effect is achieved. And heat on the mold can be effectively and uniformly cooled, and the problems of deformation, warping and the like caused by non-uniform shrinkage of the lens in the cooling process due to non-uniform temperature control of the mold are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to optical lens technical field, specifically a lens injection mold. BACKGROUND

[0002] The lens injection mold is a special mold for producing lenses, which uses injection molding technology to inject molten plastic or resin material into the cavity of the mold, and after cooling and solidification, the lens is formed. The lens injection mold has a wide range of applications in the fields of glasses manufacturing, optical instruments, camera lenses, etc. By using injection mold to produce lenses, efficient and batch production can be realized, and production scale and product specifications can be quickly adjusted according to market demand.

[0003] The specific design and structure of the lens injection mold may vary depending on different manufacturers and application requirements, but generally they include the following key parts: guide mechanism, ejection device, etc. The guide mechanism is mainly composed of guide columns and guide sleeves, which are used for positioning, guiding and bearing certain side pressure to ensure that the moving mold and the fixed mold can be accurately aligned when the mold is closed. The ejection device is usually composed of ejector rods, ejector tubes, push plates, ejector plates, ejector rod fixing plates, reset rods and material pulling rods, etc.

[0004] The existing lens injection mold has the problem that gas remains in the mold cavity during the injection molding process, which cannot be smoothly discharged, resulting in defects such as bubbles and shrink marks on the surface of the lens. The temperature of the mold has a great influence on the forming quality of the lens. If the mold temperature is not uniform, it will cause inconsistent shrinkage of the lens during the cooling process, resulting in deformation, warping and other problems. To solve the above problems, a lens injection mold is proposed. UTILITY MODEL CONTENTS

[0005] In order to make up for the shortcomings of the prior art, in view of the problems existing in the prior art, the utility model provides a lens injection mold.

[0006] The technical scheme adopted by the utility model to solve its technical problems is a lens injection mold, which comprises a base, a cooling liquid storage bin is formed in the base, and a liquid inlet pipe and a liquid outlet pipe are arranged on the cooling liquid storage bin, a module is arranged in the cooling liquid storage bin, a lower cooling bin is formed in the module, a ejector rod cylinder is arranged in the lower cooling bin, a top plate is installed on the ejector rod cylinder, a stirring rod is arranged on both sides of the ejector rod cylinder, two first motor supports are arranged on the side surface of the base, a lower cooling motor is installed on each first motor support, and the output end of the lower cooling motor is connected with the stirring rod.

[0007] The base is provided with a first circulating water pump and a second circulating water pump, the water inlet and the water outlet of the first circulating water pump are respectively provided with a first water suction pipe and a first liquid delivery pipe, the water inlet and the water outlet of the second circulating water pump are respectively provided with a second water suction pipe and a second liquid delivery pipe, the first water suction pipe and the second liquid delivery pipe are arranged in the cooling liquid storage bin, the first liquid delivery pipe and the second water suction pipe are arranged in the lower cooling bin, and the lower cooling bin is provided with a lower mold.

[0008] Preferably, the base is provided with four telescopic air cylinders arranged in an array, the output ends of the four telescopic air cylinders are provided with mounting plates, the mounting plates are internally provided with liquid storage bins, the center of the bottom of the mounting plate is fixedly provided with a fixed seat, the fixed seat is internally provided with an upper cooling bin, the upper cooling bin is fixedly installed with an upper mold, the upper cooling bin is provided with two cooling rods, the side of the mounting plate is provided with two second motor supports, the two second motor supports are respectively installed with an upper cooling motor, and the output ends of the two upper cooling motors are respectively connected with a cooling rod.

[0009] Preferably, the bottom end of the mounting plate is provided with two upper circulating water pumps, the two upper circulating water pumps are symmetrically arranged, the water outlets and the water inlets of the two upper circulating water pumps are respectively connected with an upper water suction pipe and an upper liquid delivery pipe, and the opposite ends of the two upper water suction pipes and the two upper liquid delivery pipes penetrate the inside of the mounting plate and are fixedly communicated with the two sides of the upper cooling bin.

[0010] Preferably, the mounting plate is provided with an exhaust cylinder, the exhaust cylinder is internally provided with an exhaust motor, the output shaft of the exhaust motor is connected with an exhaust fan, the inside of the exhaust cylinder is provided with a filter screen, the filter screen is located below the exhaust fan, the bottom of the exhaust cylinder is provided with a gas hole, the gas hole is provided with an adjustable guide pipe, the bottom of the exhaust cylinder is provided with an exhaust port, and the exhaust port is hingedly connected with a switch.

[0011] Preferably, the center of the mounting plate is provided with an injection pipe, the injection pipe penetrates the mounting plate and the fixed seat and is arranged in the upper mold, the top end of the injection pipe is provided with a sealing cover, the sealing cover is provided with an exhaust port, and the adjustable guide pipe is connected with the exhaust port arranged on the sealing cover.

[0012] Preferably, the first circulating water pump, the second circulating water pump and the two upper circulating water pumps are electrically connected with an external power source respectively.

[0013] The mold injection cooling forming generated gas is sucked out through the injection pipe, and then filtered through the filter screen and discharged through the air holes formed at the bottom of the exhaust cylinder, so that the smooth progress of the injection process is ensured, the quality of the finished product is improved, and the production efficiency is optimized.

[0014] The cooling liquid in the liquid storage bin can be pumped out through the upper pumping pipe of the right water pump and discharged into the cooling bin through the upper infusion pipe of the right water pump, and the cooling liquid in the upper cooling bin can be pumped out through the upper pumping pipe of the left water pump and discharged into the liquid storage bin through the upper infusion pipe of the left water pump, so that the effect of circulation is achieved, the heat on the mold can be uniformly cooled, and the problem of inconsistent shrinkage of the lens during the cooling process due to uneven temperature control of the mold is avoided, thereby avoiding deformation, warping and other problems. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained on the basis of these drawings without creative labor.

[0016] Figure 1 Overall cross-sectional structure schematic view;

[0017] Figure 2 It is a first perspective view of the overall structure schematic view;

[0018] Figure 3 It is a second perspective view of the overall structure schematic view;

[0019] Figure 4 It is a lower mold structure schematic view;

[0020] Figure 5 It is an upper mold structure schematic view;

[0021] In the figure: 1, base; 2, cooling liquid storage bin; 3, No. 1 circulating water pump; 4, No. 1 water suction pipe; 5, No. 1 infusion tube; 6, No. 2 circulating water pump; 7, No. 2 infusion tube; 8, No. 2 water suction pipe; 9, lower cooling bin; 10, top rod air cylinder; 11, No. 1 motor support; 12, lower cooling motor; 13, stirring rod; 14, module; 15, top plate; 16, lower mold; 17, telescopic air cylinder; 18, mounting plate; 19, liquid storage bin; 20, fixing seat; 21, upper circulating water pump; 22, upper cooling bin; 25, upper infusion tube; 26, upper water suction pipe; 27, No. 2 motor support; 28, upper cooling motor; 29, cooling rod; 30, upper mold; 31, exhaust cylinder; 32, exhaust motor; 33, exhaust fan; 34, filter screen; 35, adjustable guide pipe; 36, sealing cover; 37, injection molding pipe. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-5 As shown in the figure, a lens injection mold, comprising a base 1, the base 1 is internally provided with a cooling liquid storage bin 2, and the cooling liquid storage bin 2 is provided with an inlet pipe and an outlet pipe, the cooling liquid storage bin 2 is provided with a module 14, the module 14 is internally provided with a lower cooling bin 9, the lower cooling bin 9 is provided with a top rod air cylinder 10, the top rod air cylinder 10 is installed with a top plate 15, the both sides of the top rod air cylinder 10 are respectively provided with a stirring rod 13, the base 1 is provided with two No. 1 motor supports 11 on the side, the two No. 1 motor supports 11 are respectively installed with a lower cooling motor 12, and the lower cooling motor 12 output end is connected with the stirring rod 13.

[0024] The base 1 is installed with a No. 1 circulating water pump 3 and a No. 2 circulating water pump 6, the water inlet and the water outlet of the No. 1 circulating water pump 3 are respectively provided with a No. 1 water suction pipe 4 and a No. 1 infusion tube 5, the water inlet and the water outlet of the No. 2 circulating water pump 6 are respectively provided with a No. 2 water suction pipe 8 and a No. 2 infusion tube 7, and the No. 1 water suction pipe 4 and the No. 2 infusion tube 7 are arranged in the cooling liquid storage bin 2, the No. 1 infusion tube 5 and the No. 2 water suction pipe 8 are arranged in the lower cooling bin 9, and the lower cooling bin 9 is provided with a lower mold 16.

[0025] In operation, in order to cool the lower mold 16, the first circulating water pump 3 and the second circulating water pump 6 are started, the cooling liquid in the cooling liquid storage bin 2 is pumped out through the first pumping pipe 4 of the first circulating water pump 3 and is discharged into the lower cooling bin 9 through the first liquid delivery pipe 5 of the first circulating water pump 3, the cooling liquid in the lower cooling bin 9 is pumped out through the second pumping pipe 8 of the second circulating water pump 6 and is discharged into the cooling liquid storage bin 2 through the second liquid delivery pipe 7 of the second circulating water pump 6, and the lower cooling motor 12 is started to rotate the stirring rod 13 connected to the output end of the lower cooling motor 12 to stir the cooling liquid and cool the lower mold 16.

[0026] The base 1 is provided with four telescopic cylinders 17 arranged in an array, the four telescopic cylinders 17 are provided with mounting plates 18 at the output ends, the mounting plates 18 are provided with liquid storage bins 19 inside, the mounting plates 18 are provided with fixed seats 20 at the centers of the bottoms, the fixed seats 20 are provided with upper cooling bins 22 inside, the upper cooling bins 22 are fixedly provided with upper molds 30 inside, the upper cooling bins 22 are provided with two cooling rods 29 inside, the mounting plates 18 are provided with two second motor supports 27 at the sides, the two second motor supports 27 are respectively provided with upper cooling motors 28, and the two upper cooling motors 28 are respectively connected to the two cooling rods 29 at the output ends.

[0027] The mounting plates 18 are provided with two upper circulating water pumps 21 at the bottoms, the two upper circulating water pumps 21 are symmetrically arranged, the water outlets and the water inlets of the two upper circulating water pumps 21 are respectively connected to upper pumping pipes 26 and upper liquid delivery pipes 25, and the opposite ends of the two upper pumping pipes 26 and the two upper liquid delivery pipes 25 penetrate the interiors of the mounting plates 18 and are fixedly communicated with the two sides of the upper cooling bins 22.

[0028] In operation, in order to continuously cool the upper mold 30, the cooling liquid in the liquid storage bin 19 is pumped out through the upper pumping pipe 26 of the right upper circulating water pump 21 and is discharged into the upper cooling bin 22 through the upper liquid delivery pipe 25 of the right upper circulating water pump 21, the cooling liquid in the upper cooling bin 22 is pumped out through the upper pumping pipe 26 of the left upper circulating water pump 21 and is discharged into the liquid storage bin 19 through the upper liquid delivery pipe 25 of the left upper circulating water pump 21, and the upper cooling motor 28 is started to rotate the cooling rod 29 connected to the output end of the upper cooling motor 28 to stir the cooling liquid and cool the upper mold 30.

[0029] The mounting plates 18 are provided with exhaust cylinders 31, the exhaust cylinders 31 are provided with exhaust motors 32 inside, the output shafts of the exhaust motors 32 are connected to exhaust fans 33, the interiors of the exhaust cylinders 31 are provided with filter screens 34, the filter screens 34 are located below the exhaust fans 33, the bottoms of the exhaust cylinders 31 are provided with air holes, the air holes are provided with adjustable air pipes 35, the bottoms of the exhaust cylinders 31 are provided with exhaust ports, and the exhaust ports are hingedly provided with switches.

[0030] During operation, in order to expel the gas inside the upper mold 30 and the lower mold 16, the exhaust motor 32 starts and drives the exhaust fan 33 to rotate and generate suction. The gas generated during the injection molding and cooling process is drawn out through the injection pipe 37, filtered by the filter screen 34, and then discharged through the air hole at the bottom of the exhaust pipe 31.

[0031] An injection tube 37 is provided at the center of the mounting plate 18. The injection tube 37 passes through the mounting plate 18 and the fixing seat 20 and is set in the upper mold 30. A sealing cap 36 is provided at the top of the injection tube 37. An exhaust port is provided on the sealing cap 36. The adjustable conduit 35 is connected to the exhaust port provided on the sealing cap 36. The first circulating water pump 3, the second circulating water pump 6 and the two upper circulating water pumps 21 are electrically connected to an external power source.

[0032] During operation, in order to produce lenses by injection molding, the telescopic cylinder 17 is activated, causing the upper mold 30 to move downward and seal against the lower mold 16. Then, the injection molding material is introduced into the mold through the injection tube 37, and the sealing cover 36 is put on.

[0033] Working principle: In order to produce lenses by injection molding, the telescopic cylinder 17 is activated, which moves the upper mold 30 downward to seal and contact the lower mold 16. Then, the injection molding material is introduced into the mold through the injection tube 37 and the sealing cover 36 is closed.

[0034] To cool the lower mold 16, the first circulating water pump 3 and the second circulating water pump 6 are started. The coolant in the coolant storage tank 2 is drawn out through the first water extraction pipe 4 of the first circulating water pump 3 and discharged into the lower cooling tank 9 through the first liquid delivery pipe 5 of the first circulating water pump 3. The coolant in the lower cooling tank 9 is drawn out through the second water extraction pipe 8 of the second circulating water pump 6 and discharged into the coolant storage tank 2 through the second liquid delivery pipe 7 of the second circulating water pump 6. The lower cooling motor 12 is started, and the stirring rod 13 connected to the output end of the lower cooling motor 12 is controlled to rotate and stir the coolant to cool the lower mold 16.

[0035] To continue cooling the upper mold 30, coolant is drawn from the storage tank 19 through the upper pump pipe 26 of the right upper circulating water pump 21 and discharged into the upper cooling tank 22 through the upper delivery pipe 25 of the right upper circulating water pump 21. Coolant is drawn from the upper cooling tank 22 through the upper pump pipe 26 of the left upper circulating water pump 21 and discharged into the storage tank 19 through the upper delivery pipe 25 of the left upper circulating water pump 21. The upper cooling motor 28 is started to control the cooling rod 29 installed at the output end of the upper cooling motor 28 to rotate and stir the coolant, thereby cooling the upper mold 30.

[0036] In order to exhaust the gas in the upper mold 30 and the lower mold 16, the exhaust motor 32 drives the exhaust fan 33 to rotate to generate suction, and the gas generated during the injection molding and cooling forming of the mold is sucked out through the injection pipe 37, filtered through the filter screen 34, and then discharged through the air holes at the bottom of the exhaust cylinder 31.

[0037] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The basic principles, main features and advantages of the present application have been shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A lens injection mold, characterized by: The utility model provides a cooling device, including base (1), the inside of base (1) is opened with cooling liquid storage (2), and cooling liquid storage (2) is provided with liquid inlet pipe and liquid outlet pipe, cooling liquid storage (2) is provided with module (14) inside, the lower cooling storehouse (9) is opened in module (14), the lower cooling storehouse (9) is provided with top rod air cylinder (10) inside, top rod air cylinder (10) is installed with top plate (15), top rod air cylinder (10) both sides are provided with one stirring rod (13) respectively, base (1) side is provided with two first motor support (11), two first motor support (11) are installed with one lower cooling motor (12) respectively on, and lower cooling motor (12) output is connected stirring rod (13); The base (1) is provided with a first circulating water pump (3) and a second circulating water pump (6), the water inlet and the water outlet of the first circulating water pump (3) are provided with a first water suction pipe (4) and a first liquid delivery pipe (5), respectively, the water inlet and the water outlet of the second circulating water pump (6) are provided with a second water suction pipe (8) and a second liquid delivery pipe (7), respectively, and the first water suction pipe (4) and the second liquid delivery pipe (7) are arranged in the cooling liquid storage (2), the first liquid delivery pipe (5) and the second water suction pipe (8) are arranged in the lower cooling storehouse (9), and the lower cooling storehouse (9) is provided with a lower mold (16).

2. The lens injection mold of claim 1, wherein: The base (1) is provided with four telescopic cylinders (17), the output ends of the four telescopic cylinders (17) are provided with mounting plates (18), the inside of the mounting plate (18) is provided with a liquid storage (19), the mounting plate (18) is provided with a fixed seat (20) at the center of the bottom, the inside of the fixed seat (20) is provided with an upper cooling storehouse (22), the upper cooling storehouse (22) is fixedly installed with an upper mold (30), the upper cooling storehouse (22) is provided with two cooling rods (29), the side of the mounting plate (18) is provided with two second motor supports (27), and the two second motor supports (27) are respectively installed with an upper cooling motor (28), and the output ends of the two upper cooling motors (28) are respectively connected with a cooling rod (29).

3. A lens injection mold according to claim 2, characterized in that: The bottom end of the mounting plate (18) is provided with two upper circulating water pumps (21), the two upper circulating water pumps (21) are symmetrically arranged, and the water outlets and the water inlets of the two upper circulating water pumps (21) are respectively connected with an upper water suction pipe (26) and an upper liquid delivery pipe (25), and the opposite ends of the two upper water suction pipes (26) and the two upper liquid delivery pipes (25) penetrate the inside of the mounting plate (18) and are fixedly communicated with the two sides of the upper cooling storehouse (22).

4. The lens injection mold of claim 2, wherein: The installation plate (18) is provided with an exhaust cylinder (31), the inside of the exhaust cylinder (31) is provided with an exhaust motor (32), the output shaft of the exhaust motor (32) is connected with an exhaust fan (33), wherein the inside of the exhaust cylinder (31) is provided with a filter screen (34), and the filter screen (34) is located below the exhaust fan (33), the bottom of the exhaust cylinder (31) is provided with a gas hole, the gas hole is provided with an adjustable duct (35), the bottom of the exhaust cylinder (31) is provided with an exhaust port, and the exhaust port is hinged with an on-off switch.

5. The lens injection mold of claim 2, wherein: The center of the installation plate (18) is provided with an injection tube (37), the injection tube (37) penetrates the installation plate (18) and the fixed base (20) and is arranged in the upper mold (30), and the top of the injection tube (37) is provided with a sealing cover (36), the sealing cover (36) is provided with an exhaust port, and the adjustable duct (35) is connected with the exhaust port on the sealing cover (36).

6. The lens injection mold of claim 1, wherein: The first circulating water pump (3), the second circulating water pump (6) and the two upper circulating water pumps (21) are electrically connected with an external power supply.

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