Injection molding processing equipment and method for light-emitting LENS

Abstract

The invention relates to the technical field of injection molding machining, in particular to luminous LENS injection molding machining equipment and method.The luminous LENS injection molding machining equipment comprises an injection molding machining equipment base, a discharging port is formed in the middle of the injection molding machining equipment base, and a movable protective cover is arranged on one side of the upper surface of the injection molding machining equipment base; the device has the beneficial effects that the premixing feeding assembly is designed, gas is introduced in the up-down stirring process, plastic particles and a dispersing agent are evenly mixed, the whole mixing area is covered, material agglomeration is scattered, the plastic particles and the dispersing agent entering melting injection molding extrusion equipment are fully premixed, and the plastic particles and the dispersing agent are evenly mixed; and in cooperation with the dynamic design of the forming movable inner mold and the forming outer mold, compared with a traditional injection mold, demolding is facilitated, meanwhile, molten plastic can be promoted to flow in a forming cavity, a dispersing agent is helped to be evenly diffused, the integral injection molding quality of the lens is improved, a light-emitting area of the LENS appearance surface can emit light evenly, and the lens quality is improved. And the regional brightness consistency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, and in particular to a luminous LENS injection molding device and method. Background Art

[0002] Luminous LENS injection molding is luminous lens injection molding, which refers to transparent or translucent plastic parts manufactured by injection molding, which are used to focus, diffuse or guide light. The luminous LENS process generally uses PC particles for one-piece injection molding, which has certain light-guiding properties. It is usually used in combination with LEDs and is widely used in lighting, display, automotive lamps and other fields to optimize the directionality and intensity of light output. The specific method of use is to attach the FPC (flexible printed circuit board) to the LENS surface, and then insert the LED into the LENS lamp slot to light up the LENS luminous surface. However, in the prior art, the luminous LENS injection molding process does not add a suitable proportion of diffusing agent or diffusing particles, resulting in the LENS luminous area showing more concentrated light after the FPC is attached, which concentrates the LED light, resulting in poor visual effects and poor consistency.

[0003] The existing Chinese patent document with publication number CN218019872U proposes a three-axis vibration uniform distribution injection molding mold, which adopts four three-axis vibrators. The three-axis vibrators can make the plastic particles in the hopper fall into the feeding pipe evenly and densely. The four three-axis vibrators can improve the work efficiency and better solve the above problems by evenly distributing the plastic particles. However, if the particles are dispersed only by vibration, particles of different sizes may be naturally stratified under the action of vibration, resulting in uneven distribution of the particle material in the hopper, and may even cause material accumulation or blockage in certain areas.

[0004] Therefore, the present invention proposes a luminous LENS injection molding processing equipment and method to solve the problem that the prior art relies on vibration to evenly add diffusion particles, which may cause natural stratification of particles and uneven distribution of particles of different sizes. A premixing structure is added at the feed point of the injection molding equipment to evenly add a suitable proportion of diffusing agent or diffusion particles and injection particles for full mixing. At the same time, the injection mold runner is improved, and the molten plastic and particles enter the cavity from multiple positions, reducing the flow distance and ensuring that the particles are evenly distributed in the entire cavity. Summary of the invention

[0005] The object of the present invention is to provide a luminous LENS injection molding processing device and method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a luminous LENS injection molding processing equipment, comprising an injection molding processing equipment base, a discharge port is arranged in the middle of the injection molding processing equipment base, a movable protective cover is arranged on one side of the upper surface of the injection molding processing equipment base, a fixed protective cover is arranged on the other side of the upper surface of the injection molding processing equipment base, a melt injection molding extrusion equipment is fixedly installed in the middle of the upper surface of the injection molding processing equipment base, a premix feed assembly is arranged above the feed port of the melt injection molding extrusion equipment, a molding mold structure is arranged at the extrusion port of the melt injection molding extrusion equipment, and the molding mold structure includes a molding outer mold, an injection molding outer mold and a molding movable inner mold.

[0007] Preferably, the interior of the injection outer mold is provided with an annular flow cavity and a double-port injection channel, the injection port inner wall of the double-port injection channel is fixedly connected to the outer surface of the extrusion tube of the melt injection extrusion equipment, and the inner wall of the annular flow cavity is evenly distributed with multiple injection ports.

[0008] Preferably, a sealing sleeve matching the molding outer mold is provided on the surface of the injection outer mold, an exhaust port is provided above the inner wall of the injection outer mold, an exhaust plug is provided inside the exhaust port, a telescopic rod is provided on one side of the molding outer mold, and the telescopic rod is fixedly mounted on the upper surface of the base of the injection molding processing equipment.

[0009] Preferably, the movable inner molding mold is slidably installed inside the outer molding mold, an inner mold fixing frame is fixedly installed on one side surface of the movable inner molding mold, a limiting spring rod is fixedly installed on one side of the inner mold fixing frame, and a limiting slide rail compatible with the limiting spring rod is provided on the upper surface of the injection molding equipment base, and one end of the limiting spring rod is fixedly connected to the upper surface of the injection molding equipment base.

[0010] Preferably, a lens integrally formed extrusion plate is provided on one side of the molding movable inner mold, a movable sleeve is fixedly installed in the middle of the side wall of the lens integrally formed extrusion plate, a sealing flow guide cover is fixedly installed inside the molding movable inner mold, a water pipe is fixedly installed in the middle of one side of the sealing flow guide cover, a leakage hole is provided on the side wall of the water pipe, and the inner surface of the movable sleeve is slidably connected to the outer surface of the water pipe.

[0011] Preferably, a sealing ring adapted to the inner wall of the movable inner mold is fixedly mounted on the outer surface of the movable sleeve, an elastic ring is fixedly mounted on one side of the sealing ring, and one end of the elastic ring is fixedly connected to the inner surface of the movable inner mold.

[0012] Preferably, a water circulation pump is arranged below one side of the base of the injection molding processing equipment, a cooling water pipe is fixedly installed at the output pipe end of the water circulation pump, a discharge water pipe is arranged below the cooling water pipe, a cooling ring pipe is arranged at the lower end of the discharge water pipe, and an installation groove compatible with the cooling water pipe and the discharge water pipe is arranged inside the inner mold fixing frame, one end of the cooling water pipe and the discharge water pipe respectively penetrates the side wall of the molding movable inner mold, and the cooling water pipe is arranged on the inner side of the sealing guide cover.

[0013] Preferably, a cooling cavity is provided inside the lens integrally formed extrusion plate, a vibration plate is movably mounted inside the cooling cavity, and an impact ring is fixedly mounted on the inner surface of the movable sleeve.

[0014] Preferably, the premixing feeding assembly comprises a mixing feeding hopper and a premixing chamber, the bottom discharge pipe of the premixing chamber is fixedly connected to the upper end of the feed pipe of the melt injection molding extrusion equipment, the bottom discharge pipe of the mixing feeding hopper is fixedly connected to the upper feed pipe of the premixing chamber, a hollow rotating pipe is rotatably installed in the middle of the inner wall of one side of the premixing chamber, a mixing and stirring branch pipe is fixedly installed on the inner wall of the hollow rotating pipe, an exhaust hole is opened on the inner side of the mixing and stirring branch pipe, an auxiliary stirring frame is rotatably installed in the middle of the inner wall of the other side of the premixing chamber, a magnetic block is provided on the contact surface between the auxiliary stirring frame and the mixing and stirring branch pipe, an air inlet pipe is fixedly installed in the middle of the inner wall of one side of the premixing chamber, one end of the air inlet pipe is movably connected to the inner wall of one end of the hollow rotating pipe, an air pump is provided on the upper surface of one side of the injection molding processing equipment base, the output pipe of the air pump is fixedly connected to the other end of the air inlet pipe, and the outer surface of the premixing chamber is provided with a driving component for driving the premixing chamber to rotate.

[0015] The present invention also proposes a luminous LENS injection molding processing method, comprising the following steps: step one, pre-mixing, adding PC plastic particles and diffusing agent into a mixing feed hopper according to a proportion, and starting pre-mixing; step two, melt extrusion injection molding, the particles after pre-mixing enter the melt injection molding extrusion equipment for melt extrusion, and the molding mold structure cooperates through the molding outer mold, the injection molding outer mold and the molding movable inner mold, so that the molten plastic is integrally injection molded; step three, demolding after cooling, starting the water circulation pump to make the cooling water inside the cooling ring pipe enter the sealing guide cover through the cooling water pipe, and enter the cooling cavity inside the lens integral molding extrusion plate through the water pipe and the movable sleeve, so as to accelerate the cooling and molding of the injection molded parts in the molding cavity. After the injection molded parts are cooled, the telescopic rod will drive the molding outer mold to retreat to the leftmost side of the molding movable inner mold sliding groove, at which time the injection molded parts are exposed, and the telescopic rod continues to retreat, at which time the molding movable inner mold is driven to retreat by the molding outer mold, so that the injection molded parts are stripped and discharged.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention designs a premixed feeding component and introduces gas during the upper and lower stirring process to uniformly mix the plastic particles and the diffusant, cover the entire mixing area, break up material agglomerations, and fully premix the plastic particles and the diffusant entering the molten injection extrusion equipment. In addition, the dynamic design of the molding movable inner mold and the molding outer mold is coordinated. Compared with the traditional injection mold, it is easy to demold while promoting the flow of molten plastic inside the molding cavity, helping the diffusant to diffuse evenly, improving the quality of the integrated injection molding of the lens, and making the luminous area of ​​the LENS appearance surface emit light evenly, thereby improving the consistency of regional brightness. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the movable protective cover of the present invention after it is opened; Figure 3 This is a schematic diagram of the structure of the present invention after the protective cover is removed; Figure 4 It is a schematic diagram of the overall structure of the premixed feed assembly and the molding die structure of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the molding mold structure of the present invention before injection molding; Figure 6 It is a structural schematic diagram of the molding die structure of the present invention during the injection molding process; Figure 7 This is a schematic diagram of the structure of the molding outer mold of the present invention in a state of retreating and preparing for demoulding; Figure 8 This is a schematic diagram of the structure of the molding outer mold after demoulding of the present invention; Fig. 9 For the present invention Figure 7 A schematic diagram of the enlarged structure at point A; Fig.10 This is a schematic diagram of the structure of one side of the injection molding outer mold after disassembly; Fig.11 This is a schematic diagram of the structure of the other side after the injection molding outer mold of the present invention is disassembled; Fig.12 It is a schematic diagram of the split structure of the molding outer mold of the present invention; Fig.13 It is a schematic diagram of the cross-sectional structure of the movable inner mold of the present invention before injection molding; Fig.14 It is a schematic diagram of the cross-sectional structure of the active inner mold of the present invention during the injection molding process; Fig.15 It is a schematic diagram of the injection molding method of the present invention; Fig.16 For the present invention Fig.14 A is an enlarged structural diagram of the structure.

[0017] In the figure: 1. injection molding equipment base; 11. discharge port; 12. movable protective cover; 13. fixed protective cover; 2. melt injection molding extrusion equipment; 3. premixing feed assembly; 31. mixing feed hopper; 32. premixing chamber; 321. hollow rotating tube; 322. mixing and stirring branch pipe; 323. exhaust hole; 324. auxiliary stirring frame; 33. air inlet pipe; 34. air pump; 35. driving assembly; 4. molding mold structure; 41. molding outer mold; 411. telescopic rod; 42. injection molding outer mold; 421. annular flow cavity; 42 11. Multi-point injection port; 422. Double-port injection channel; 423. Exhaust port; 4231. Exhaust plug; 43. Molding movable inner mold; 431. Lens integrated molding extrusion plate; 4311. Cooling chamber; 4312. Vibrating plate; 432. Movable sleeve; 4321. Impact ring; 4322. Sealing ring; 4323. Elastic ring; 433. Sealing guide cover; 4331. Water pipe; 44. Inner mold fixing frame; 441. Limiting spring rod; 45. Water circulation pump; 451. Cooling water pipe; 452. Discharge water pipe. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] For example, see Figure 1 - Fig.16The present invention provides a technical solution: a luminous LENS injection molding processing equipment, including an injection molding processing equipment base 1, a discharge port 11 is arranged in the middle of the injection molding processing equipment base 1, a movable protective cover 12 is arranged on one side of the upper surface of the injection molding processing equipment base 1, and a fixed protective cover 13 is arranged on the other side of the upper surface of the injection molding processing equipment base 1. A molten injection molding extrusion equipment 2 is fixedly installed in the middle of the upper surface of the injection molding processing equipment base 1, and a premixing feed component 3 is arranged above the feed port of the molten injection molding extrusion equipment 2. The injection molding processing equipment base 1 mainly serves to install the molten injection molding extrusion equipment 2 and the molding mold structure 4. The premixing feed component 3 is used to mix the materials entering the molten injection molding extrusion equipment 2 through a mixing feed hopper 31 and a premixing chamber 32. The plastic particles and the diffusion agent out of the device 2 are fully premixed, and then the mixed particles enter the melt injection molding extrusion device 2 for melt extrusion. A molding die structure 4 is arranged at the extrusion port of the melt injection molding extrusion device 2. The molding die structure 4 includes a molding outer mold 41, an injection outer mold 42 and a molding movable inner mold 43. The injection outer mold 42 is provided with an annular flow cavity 421 and a double-port injection flow channel 422. The inner wall of the injection port of the double-port injection flow channel 422 is fixedly connected to the outer surface of the extrusion tube of the melt injection molding extrusion device 2. The inner wall of the annular flow cavity 421 is evenly distributed with multiple injection ports 4211. The molding die structure 4 cooperates with the molding outer mold 41, the injection outer mold 42 and the molding movable inner mold 43 to make the melt The molten plastic is integrally injection molded, and a double-port injection channel 422 is arranged inside the injection outer mold 42 to allow the molten plastic to enter the annular flow cavity 421 from the upper and lower sides. The annular flow cavity 421 is annular, and the multi-point injection ports 4211 evenly distributed on the inner wall thereof can allow the molten plastic and the diffuser to enter the molding cavity composed of the molding outer mold 41 and the molding movable inner mold 43 at multiple points. The surface of the injection outer mold 42 is provided with a sealing sleeve adapted to the molding outer mold 41, and an exhaust port 423 is arranged above the inner wall of the injection outer mold 42, and an exhaust plug 4231 is arranged inside the exhaust port 423, and a telescopic rod 411 is arranged on one side of the molding outer mold 41, and the telescopic rod 411 is fixedly mounted on the upper surface of the base 1 of the injection molding processing equipment The annular flow cavity 421 is annular in shape and the multi-point injection ports 4211 evenly distributed on its inner wall reduce the problem of local uneven filling that may be caused by a single feed port, shorten the flow distance of the molten plastic in the cavity, reduce the temperature drop and viscosity change caused by long-distance flow, thereby improving the consistency and uniformity of filling, and helping to evenly distribute the diffusing agent in the entire cavity, avoiding particle aggregation or unevenness caused by single-point feeding, and improving the performance consistency of the final product. The design of the annular flow cavity 421 and the multi-point injection ports 4211 allows the molten plastics entering from different directions to form a cross flow in the cavity, which promotes the full mixing between the materials and further enhances the dispersion effect of the particles.

[0020] Embodiment 2, on the basis of embodiment 1, the molding movable inner mold 43 is slidably installed inside the molding outer mold 41, and an inner mold fixing frame 44 is fixedly installed on one side surface of the molding movable inner mold 43, and a limiting spring rod 441 is fixedly installed on one side of the inner mold fixing frame 44, and a limiting slide rail adapted to the limiting spring rod 441 is provided on the upper surface of the injection molding equipment base 1, and one end of the limiting spring rod 441 is fixedly connected to the upper surface of the injection molding equipment base 1. In this embodiment, the matching design of the molding movable inner mold 43 and the molding outer mold 41, compared with the traditional injection mold, is convenient for demoulding, and can also promote the flow of molten plastic in the molding cavity, help the diffuser to diffuse evenly, improve the quality of the lens integrated injection molding, and make the luminous area of ​​the LENS appearance surface emit light evenly, and improve the consistency of regional brightness. One side of the molding movable inner mold 43 is provided with a lens integrated molding extrusion plate 431, which is worth It should be noted that the position of the multi-point injection molding port 4211 is just at the groove of the molding surface of the lens integrally molded extrusion plate 431. Here, the convex ridge of the molding surface of the lens integrally molded extrusion plate 431 is mainly used to form a reserved LENS lamp groove after the lens is integrally injection molded. A movable sleeve 432 is fixedly installed in the middle of the side wall of the lens integrally molded extrusion plate 431. A sealing guide cover 433 is fixedly installed inside the molding movable inner mold 43. A water pipe 4331 is fixedly installed in the middle of one side of the sealing guide cover 433. A leakage hole is provided on the side wall of the water pipe 4331. The inner surface of the movable sleeve 432 is slidably connected with the outer surface of the water pipe 4331. A sealing ring 4322 adapted to the inner wall of the molding movable inner mold 43 is fixedly installed on the outer surface of the movable sleeve 432. An elastic ring 4323 is fixedly installed on one side of the sealing ring 4322. One end of the elastic ring 4323 is fixedly connected with the inner surface of the molding movable inner mold 43.The specific injection molding process is as follows: first, the telescopic rod 411 pushes the molding outer mold 41 to seal the sealing sleeve of the injection outer mold 42. At this time, the molding outer mold 41 is located at the rightmost side of the sliding groove of the molding movable inner mold 43, and the lens integral molding extrusion plate 431 is pushed out due to the elastic push of the outer sealing ring 4322 and the elastic ring 4323 of the movable sleeve 432. The molding surface of the lens integral molding extrusion plate 431 will fit the surface of the injection outer mold 42. As the molten injection extrusion equipment 2 works, the molten plastic is extruded through the injection outer mold 42 to evenly fill the molding surface groove, so that the pressure between the lens integral molding extrusion plate 431 and the injection outer mold 42 increases. At this time, the lens integral molding extrusion plate 431 is pushed out. The lens integrally formed extrusion plate 431 will move backwards to gradually fill the molding cavity. This design can balance the pressure distribution of various parts of the cavity, reduce the internal stress concentration caused by the pressure difference, and reduce the risk of warping and deformation of the finished product. In addition, this uniform molding process makes the plastic cooling shrinkage more consistent, reducing the product size deviation caused by uneven shrinkage. Until the molding cavity between the lens integrally formed extrusion plate 431 and the injection outer mold 42 is filled, the molten injection extrusion device 2 stops working. At this time, the lens integrally formed extrusion plate 431 retreats to the extreme position, so that the movable sleeve 432 is sleeved on the outside of the water pipe 4331, and its surface The leakage hole is blocked; in addition, a water circulation pump 45 is arranged below one side of the base 1 of the injection molding processing equipment, and a cooling water pipe 451 is fixedly installed at the output pipe end of the water circulation pump 45, and a discharge water pipe 452 is arranged below the cooling water pipe 451, and a cooling ring pipe is arranged at the lower end of the discharge water pipe 452, and the inner mold fixing frame 44 is provided with a mounting groove adapted to the cooling water pipe 451 and the discharge water pipe 452, and one end of the cooling water pipe 451 and the discharge water pipe 452 respectively penetrates the side wall of the molding movable inner mold 43, and the cooling water pipe 451 is arranged on the inner side of the sealing guide cover 433, and the lens integral molding extrusion plate 431 is provided with a cooling Cavity 4311, a vibration plate 4312 is movably installed inside the cooling cavity 4311, and an impact ring 4321 is fixedly installed on the inner surface of the movable sleeve 432. It should be noted that the vibration plate is located in the cooling cavity 4311 inside the lens integrally formed extrusion plate 431, and is symmetrically distributed. A triangular plate is designed at one end, and a rotation connection point is designed at the end close to the triangular plate. The movable sleeve 432 and the lens integrally formed extrusion plate 431 are fixed as a whole. The impact ring 4321 is fixed inside the movable sleeve 432, and is a conical cap design with a hollow design on the surface. The end of the vibration plate 4312 at the hollow part of the impact ring 4321 is exactly the position of the triangular plate.In this embodiment, the water circulation pump 45 works to make the cooling water inside the cooling ring pipe enter the sealing guide cover 433 through the cooling water pipe 451, and then enter the cooling cavity 4311 inside the lens integrally formed extrusion plate 431 through the water pipe 4331 and the movable sleeve 432, so as to accelerate the cooling and molding of the injection molded parts in the molding cavity. In this process, the water flows through the hollow part of the impact ring 4321 to directly impact the surface of the triangular plate of the vibration plate 4312. Since the rotating connection point is close to the triangular plate, the lever principle is used. When the water flows, one side of the triangular plate of the vibration plate 4312 is easily moved to generate a vibration on the inner wall of the lens integrally formed extrusion plate 431. In addition, a spring is provided on one side of the vibration plate 4312, and a ball is provided on the other side. Therefore, when the water flow changes and the impact becomes smaller, the spring pushes the vibration plate 4312 to reset, which will generate a certain vibration on the inner side of the lens integrally formed extrusion plate 431 again, which can help the bubbles contained in the molten plastic to vibrate. The water is discharged through the exhaust port 423 and the exhaust plug 4231, further improving the quality of the injection molded parts. Finally, after the injection molded parts are cooled, the telescopic rod 411 will drive the molding outer mold 41 to retreat to the leftmost side of the sliding groove of the molding movable inner mold 43. At this time, the injection molded parts are exposed, and the telescopic rod 411 continues to retreat. At this time, the molding movable inner mold 43 is driven to retreat by the molding outer mold 41, so that the injection molded parts are peeled off. The limiting spring rod 441 is squeezed at this time. After the injection molded parts are peeled off, the lens integral molding extrusion plate 431 is restored again under the action of the elastic ring 4323. At this time, the water inside the lens integral molding extrusion plate 431 is discharged through the leakage hole of the water pipe 4331, and then discharged through the discharge water pipe 452 to re-enter the cooling ring pipe for cooling. Then, the telescopic rod 411 pushes the molding outer mold 41 to reset and engage with the injection outer mold 42. The limiting spring rod 441 pushes the inner mold fixing frame 44 to make the molding movable inner mold 43 also move and reset, and the next round of injection molding can be continued. ;

[0021] Embodiment 3, on the basis of embodiment 2, the premixing feed assembly 3 comprises a mixing feed hopper 31 and a premixing chamber 32, the bottom discharge pipe of the premixing chamber 32 is fixedly connected to the upper end of the feed pipe of the melt injection extrusion device 2, the bottom discharge pipe of the mixing feed hopper 31 is fixedly connected to the upper feed pipe of the premixing chamber 32, a hollow rotating pipe 321 is rotatably installed in the middle of the inner wall of one side of the premixing chamber 32, the inner wall of the hollow rotating pipe 321 is fixedly installed with a mixing and stirring branch pipe 322, and the mixing and stirring branch pipe 32 2, an exhaust hole 323 is opened on the inner side of the premixing chamber 32, an auxiliary stirring frame 324 is rotatably installed in the middle of the inner wall of the other side of the premixing chamber 32, and a magnetic block is provided on the contact surface between the auxiliary stirring frame 324 and the mixing and stirring branch pipe 322, an air inlet pipe 33 is fixedly installed in the middle of the inner wall of one side of the premixing chamber 32, and one end of the air inlet pipe 33 is movably sleeved with the inner wall of one end of the hollow rotating pipe 321, and an air pump 34 is provided on the upper surface of one side of the injection molding processing equipment base 1, and the output pipe of the air pump 34 is connected to the other end of the air inlet pipe 33. The premixing chamber 32 is fixedly connected, and a driving assembly 35 is provided on the outer surface of the premixing chamber 32 for driving the premixing chamber 32 to rotate; in the present embodiment, the plastic particles and the diffusant are mixed and added into the premixing chamber 32 through the mixing hopper 31, and the driving assembly 35 drives the hollow rotating tube 321 to rotate, and at the same time, the air pump 34 injects air into the hollow rotating tube 321 through the air inlet pipe 33, so that the mixing and stirring branch pipe 322 can stir while discharging gas through the exhaust hole 323, and at the same time, the auxiliary stirring frame 324 is connected to the mixing and stirring branch pipe 322 through the magnetic block, and rotates synchronously with the mixing and stirring branch pipe 322, and the plastic particles and the diffusant are evenly mixed by shearing up and down. The overall rotational motion can cover the entire mixing area, reduce the dead corners of material retention, and further improve the mixing effect. The gas injection produces a turbulent effect, further breaks up the material agglomeration, enhances the mixing effect, and makes the diffusant evenly adhere to the surface of the plastic particles to fully premix the plastic particles and the diffusant entering the melt injection extrusion equipment 2.

[0022] Embodiment 4, on the basis of embodiment 3, the present invention further proposes a luminous LENS injection molding processing method, comprising the following steps: step 1, pre-mixing, adding PC plastic particles and diffusing agent into the mixing feed hopper 31 according to the proportion, and starting pre-mixing; step 2, melt extrusion injection molding, after pre-mixing, the particles enter the melt injection extrusion equipment 2 for melt extrusion, and the molding mold structure 4 cooperates with the molding outer mold 41, the injection outer mold 42 and the molding movable inner mold 43 to make the molten plastic be integrally injection molded; step 3, demoulding after cooling, and starting The water circulation pump 45 works to make the cooling water inside the cooling ring pipe enter the sealing guide cover 433 through the cooling water pipe 451, and then enter the cooling cavity 4311 inside the lens integrated molding extrusion plate 431 through the water pipe 4331 and the movable sleeve 432, so as to accelerate the cooling and molding of the injection molded parts in the molding cavity. After the injection molded parts are cooled, the telescopic rod 411 will drive the molding outer mold 41 to retreat to the leftmost side of the sliding groove of the molding movable inner mold 43, at which time the injection molded parts are exposed, and the telescopic rod 411 continues to retreat. At this time, the molding movable inner mold 43 is driven to retreat by the molding outer mold 41, so that the injection molded parts are peeled off and discharged.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A luminous LENS injection molding processing equipment, comprising an injection molding processing equipment base (1), a discharge port (11) is arranged in the middle of the injection molding processing equipment base (1), a movable protective cover (12) is arranged on one side of the upper surface of the injection molding processing equipment base (1), a fixed protective cover (13) is arranged on the other side of the upper surface of the injection molding processing equipment base (1), and a melt injection molding extruder (2) is fixedly installed in the middle of the upper surface of the injection molding processing equipment base (1), characterized in that: A premix feed assembly (3) is arranged above the feed port of the melt injection extrusion device (2); a molding die structure (4) is arranged at the extrusion port of the melt injection extrusion device (2); the molding die structure (4) comprises a molding outer die (41), an injection molding outer die (42) and a molding movable inner die (43); the molding movable inner die (43) is slidably mounted inside the molding outer die (41); a lens integral molding extrusion plate (431) is arranged on one side of the molding movable inner die (43); a movable sleeve (432) is fixedly mounted on the middle part of the side wall of the lens integral molding extrusion plate (431); a sealing ring (4322) adapted to the inner wall of the molding movable inner die (43) is fixedly mounted on the outer surface of the movable sleeve (432); an elastic ring (4323) is fixedly mounted on one side of the sealing ring (4322); one end of the elastic ring (4323) is fixedly connected to the inner surface of the molding movable inner die (43).

2. The luminous LENS injection molding processing equipment according to claim 1 is characterized in that: An annular flow cavity (421) and a double-port injection channel (422) are provided inside the injection outer mold (42); the inner wall of the injection port of the double-port injection channel (422) is fixedly connected to the outer surface of the extrusion tube of the molten injection extrusion device (2); and the inner wall of the annular flow cavity (421) is evenly distributed with multiple injection ports (4211).

3. The luminous LENS injection molding processing equipment according to claim 2 is characterized in that: The surface of the injection outer mold (42) is provided with a sealing sleeve that is compatible with the molding outer mold (41); an exhaust port (423) is provided above the inner wall of the injection outer mold (42); an exhaust plug (4231) is provided inside the exhaust port (423); a telescopic rod (411) is provided on one side of the molding outer mold (41); the telescopic rod (411) is fixedly mounted on the upper surface of the injection molding processing equipment base (1).

4. The luminous LENS injection molding processing equipment according to claim 1 is characterized in that: An inner mold fixing frame (44) is fixedly mounted on one side surface of the movable inner mold (43), a limiting spring rod (441) is fixedly mounted on one side of the inner mold fixing frame (44), and a limiting slide rail matching the limiting spring rod (441) is provided on the upper surface of the injection molding equipment base (1), and one end of the limiting spring rod (441) is fixedly connected to the upper surface of the injection molding equipment base (1).

5. The luminous LENS injection molding processing equipment according to claim 4 is characterized in that: A sealing flow guide cover (433) is fixedly installed inside the movable molding inner mold (43), a water pipe (4331) is fixedly installed in the middle of one side of the sealing flow guide cover (433), a leakage hole is provided on the side wall of the water pipe (4331), and the inner surface of the movable sleeve (432) is slidably connected to the outer surface of the water pipe (4331).

6. The luminous LENS injection molding processing equipment according to claim 4, characterized in that: A water circulation pump (45) is arranged below one side of the injection molding processing equipment base (1); a cooling water pipe (451) is fixedly installed at the output pipe end of the water circulation pump (45); a discharge water pipe (452) is arranged below the cooling water pipe (451); a cooling ring pipe is arranged at the lower end of the discharge water pipe (452); a mounting groove matching the cooling water pipe (451) and the discharge water pipe (452) is arranged inside the inner mold fixing frame (44); one end of the cooling water pipe (451) and the discharge water pipe (452) respectively penetrate the side wall of the molding movable inner mold (43); and the cooling water pipe (451) is arranged on the inner side of the sealing guide cover (433).

7. The luminous LENS injection molding processing equipment according to claim 5, characterized in that: A cooling cavity (4311) is provided inside the lens integrally formed extrusion plate (431), a vibration plate (4312) is movably mounted inside the cooling cavity (4311), and an impact ring (4321) is fixedly mounted on the inner surface of the movable sleeve (432).

8. The luminous LENS injection molding processing equipment according to claim 1, characterized in that: The premixing feed assembly (3) comprises a mixing feed hopper (31) and a premixing chamber (32); the bottom discharge pipe of the premixing chamber (32) is fixedly connected to the upper end of the feed pipe of the melt injection extrusion device (2); the bottom discharge pipe of the mixing feed hopper (31) is fixedly connected to the upper feed pipe of the premixing chamber (32); a hollow rotating tube (321) is rotatably mounted on the middle of the inner wall of one side of the premixing chamber (32); a mixing and stirring branch pipe (322) is fixedly mounted on the inner wall of the hollow rotating tube (321); an exhaust hole (323) is provided on the inner side of the mixing and stirring branch pipe (322); and a gas outlet (323) is provided on the inner side of the premixing chamber (32). An auxiliary stirring rack (324) is rotatably mounted in the middle of the wall, and a magnetic block is provided on the contact surface between the auxiliary stirring rack (324) and the mixing stirring branch pipe (322). An air intake pipe (33) is fixedly mounted in the middle of the inner wall of one side of the premixing chamber (32), and one end of the air intake pipe (33) is movably sleeved with the inner wall of one end of the hollow rotating pipe (321). An air pump (34) is provided on the upper surface of one side of the injection molding processing equipment base (1), and an output pipe of the air pump (34) is fixedly connected to the other end of the air intake pipe (33). A driving component (35) for driving the premixing chamber (32) to rotate is provided on the outer surface of the premixing chamber (32).

9. A luminous LENS injection molding method, implemented by a luminous LENS injection molding device according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: step 1, pre-mixing, adding PC plastic particles and a diffusing agent into a mixing feed hopper (31) according to a proportion, and starting pre-mixing; step 2, melt extrusion injection molding, the particles after pre-mixing enter a melt injection extrusion device (2) for melt extrusion, and a molding mold structure (4) cooperates with a molding outer mold (41), an injection molding outer mold (42) and a molding movable inner mold (43) so that the molten plastic is integrally injection molded; step 3, demoulding after cooling, and starting a water circulation pump (45) to allow cooling water inside a cooling ring pipe to pass through the cooling ring. The water pipe (451) enters the sealing guide cover (433) through the water delivery pipe (4331) and the movable sleeve (432) and enters the cooling cavity (4311) inside the lens integral molding extrusion plate (431), thereby accelerating the cooling and molding of the injection molded part in the molding cavity. After the injection molded part is cooled, the telescopic rod (411) drives the molding outer mold (41) to retreat to the leftmost side of the sliding groove of the molding movable inner mold (43), at which time the injection molded part is exposed, and the telescopic rod (411) continues to retreat. At this time, the molding movable inner mold (43) is driven to retreat by the molding outer mold (41), so that the injection molded part is peeled off and discharged.

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