Injection molding equipment for automobile lamp component

Abstract

The invention discloses injection molding equipment for automobile lamp parts, and relates to the technical field of injection molding equipment. The injection molding machine comprises pretreatment equipment and an injection molding machine body, the pretreatment equipment comprises a pretreatment box, a detection box is fixedly mounted at the bottom of the pretreatment box, a supporting frame is fixedly mounted at the bottom of the detection box, the injection molding machine body is located at the bottom of the supporting frame, and a feeding cylinder is fixedly mounted at the top of the pretreatment box; and a feeding hopper is fixedly mounted at the top end of the feeding cylinder, and a batching box is fixedly mounted in the pretreatment box. By arranging the pretreatment assembly, an electric heater can heat and dry raw material particles, then an opening and closing door rotates, the raw material particles fall into the screening box and are subjected to secondary screening through a large-aperture screen and a small-aperture screen, and therefore the raw material particles are automatically dried and screened; and the problems of bubbles, black spots and the like caused by moisture and impurities in the raw material particles during injection molding are effectively prevented, and the injection molding quality of the automobile lamp is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding equipment, and particularly relates to an injection molding equipment for automotive lamp components. Background Art

[0002] In the production process of automotive lamps, injection molding technology is required. The main materials of automotive lamp covers are generally polycarbonate (PC) and acrylate (PMMA). Both PMMA and PC have a certain hygroscopicity. The water absorption rate of PMMA reaches 0.3% - 0.4%, and the water absorption rate of PC reaches 0.3% - 0.4%. However, for injection molding, the water content of the material must be below 0.1%, usually 0.04%. During storage and transportation, the material will absorb moisture in the air. When the raw material containing too much moisture enters the injection molding machine, in the high-temperature barrel, the moisture will quickly vaporize into water vapor, resulting in the injection molded product being extremely prone to bubbles. At the same time, if impurities are mixed in the raw material, these impurities are incompatible with the plastic melt. During the injection molding process, the fluidity of the melt around the impurities changes, easily forming voids, and then generating bubbles. Impurities such as metal particles will even cause black spots on the surface and inside of the product, seriously affecting the appearance and light transmittance of the lamp.

[0003] In the current automotive lamp injection molding technology, generally a dryer is used to dry the raw materials, but it takes several hours to dry, and the raw materials cannot be stored for too long. Moreover, after drying, the tightness of the raw material transportation needs to be ensured, otherwise the material will absorb moisture again. And the problem of impurities in the raw material can only rely on strictly controlling the raw material procurement channel and strictly testing the quality of each batch of raw materials. It is difficult to effectively remove the impurities mixed in the raw material during the feeding process. Therefore, an injection molding equipment for automotive lamp components is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that currently, before injection molding of automotive lamp raw materials, the raw materials need to be dried for several hours, cannot be stored for too long, and after drying, the tightness of the raw material transportation needs to be ensured, otherwise the material will absorb moisture again. And the problem of impurities in the raw material can only rely on strictly controlling the raw material procurement channel and strictly testing the quality of each batch of raw materials. It is difficult to effectively remove the impurities mixed in the raw material during the feeding process. The present invention provides an injection molding equipment for automotive lamp components.

[0005] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0006] An injection molding device for automotive lamp components, including a pretreatment device and an injection molding machine body. The pretreatment device includes a pretreatment box. A detection box is fixedly installed at the bottom of the pretreatment box. A support frame is fixedly installed at the bottom of the detection box. The injection molding machine body is located at the bottom of the support frame. A feed cylinder is fixedly installed at the top of the pretreatment box. A feed hopper is fixedly installed at the top end of the feed cylinder. A batching box is fixedly installed inside the pretreatment box. A plurality of vertically arranged partition boxes are fixedly installed inside the batching box. Feed inlets are formed at the tops of the partition boxes. Two horizontally arranged linear guide rails are fixedly installed at the top of the batching box. Electric sliders are driven and installed at the tops of the linear guide rails. Suspension frames are fixedly installed at the tops. The same blanking buckle plate is fixedly installed between the two suspension frames. The blanking buckle plate corresponds to the positions of the plurality of feed inlets. The same blanking hose is fixedly installed between the bottom end of the feed cylinder and the top of the blanking buckle plate. A pretreatment component for preprocessing raw material particles such as drying and screening is arranged inside the pretreatment box. A detection component for detecting the preprocessed raw material particles is arranged inside the detection box. A docking hopper adapted to the hopper of the pretreatment box is fixedly installed at the bottom of the detection box.

[0007] Further, the pretreatment component includes a screening box fixedly installed inside the pretreatment box. The screening box is located at the bottom of the batching box. A large-aperture sieve mesh and a small-aperture sieve mesh are slidably installed inside the screening box from top to bottom in sequence. The large-aperture sieve mesh is horizontally arranged. The small-aperture sieve mesh is obliquely arranged. A blanking guide pipe is fixedly installed at one side of the bottom of the screening box. One end of the blanking guide pipe corresponds to the bottom end of the small-aperture sieve mesh. The other end of the blanking guide pipe extends into the detection box. An electric heater is fixedly installed on one side of the pretreatment box. The heating end of the electric heater extends into the pretreatment box and contacts the batching box. Hinge shafts are rotatably installed at the bottoms of the partition boxes. Opening and closing doors are fixedly installed on the side walls of the hinge shafts. A plurality of gear boxes are fixedly installed at the bottom of the batching box. Opening and closing motors are fixedly installed on one side of each gear box. The output shafts of the opening and closing motors at the same location are drivingly connected to the hinge shafts through the gear boxes.

[0008] Further, two vibration motors vertically distributed from top to bottom are fixedly installed on both sides of the screening box. Vibration rods are fixedly installed at the output ends of the vibration motors. Two vibration sliding holes are formed on both sides of the screening box. One ends of the four vibration rods respectively penetrate through the four vibration sliding holes and are fixedly installed on both sides of the bottoms of the large-aperture sieve mesh and the small-aperture sieve mesh.

[0009] Further, two suction pipes are fixedly installed on one side of the screening box. The two suction pipes are respectively located above the large-aperture screen and below the small-aperture screen. An industrial dust collector is fixedly installed on the top of the support frame. The intake end of the industrial dust collector is fixedly installed with a three-way suction pipe, and both suction pipes are fixedly connected to the three-way suction pipe.

[0010] Further, the detection component includes a commutation motor fixedly installed inside the detection box. The output shaft of the commutation motor is fixedly installed with a commutation frame. A plurality of vertically arranged commutation cylinders are rotatably installed on the commutation frame. The plurality of commutation cylinders are evenly distributed along the axis of the output shaft of the commutation motor. The positions of the commutation cylinders correspond to the bottom ends of the blanking guide pipes and the top ends of the docking hoppers. First solenoid valves are fixedly installed at the bottom ends of the commutation cylinders. A waste collection box is fixedly installed at the bottom of the detection box. A discharge hole communicating with the inside of the waste collection box is opened at the bottom of the detection box. The position of the discharge hole corresponds to the position of the commutation cylinder. A visual recognition device is fixedly installed inside the detection box.

[0011] Further, a rotation motor is fixedly installed inside the detection box. The output shaft of the rotation motor is fixedly sleeved with a rotation gear. The rotation motor is located above the visual recognition device. Driven gear rings are fixedly sleeved at the top ends of the commutation cylinders, and the driven gear rings are adapted to the rotation gear.

[0012] Further, a drying box is fixedly installed on one side of the pretreatment box. A ventilation pump is fixedly installed on one side of the drying box. A three-way exhaust pipe is fixedly installed on one side of the drying box. One end of the three-way exhaust pipe is communicated with the inside of the pretreatment box. An intake pipe is fixedly installed on one side of the drying box. The intake pipe is fixedly connected to the intake end of the ventilation pump. The air output end of the ventilation pump is fixedly installed with a return pipe. One end of the return pipe is communicated with the inside of the pretreatment box.

[0013] Further, second solenoid valves are fixedly installed at the top and bottom ends of the feeding cylinder. The other end of the three-way exhaust pipe is communicated with the inside of the feeding cylinder.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. By setting the pretreatment component, the electric heater heats and dries the raw material particles, so that the moisture is dried. Then the opening and closing door rotates, and the raw material particles fall into the screening box and are secondarily screened by the large-aperture screen and the small-aperture screen, thereby automatically drying and screening the raw material particles, effectively preventing problems such as bubbles and black spots caused by moisture and impurities inside the raw material particles during injection molding, and ensuring the injection molding quality of automotive lamps;

[0016] 2. The present invention sets a detection component so that the raw material particles after secondary screening will fall into the inside of the transposition cylinder, and then the transposition motor drives the transposition frame to drive multiple transposition cylinders to rotate and transpose. When the transposition cylinder loaded with raw material particles moves to one side of the visual recognition instrument, the visual recognition instrument will shoot and identify the raw material particles inside the transposition cylinder, so as to perform the final detection on the raw material particles after drying and secondary screening before injection molding, and further prevent the raw material particles containing impurities from entering the inside of the injection molding machine body and affecting the injection molding quality of automobile lamps;

[0017] 3. The present invention is provided with a self-rotating motor, so that when the transposition cylinder moves to one side of the visual recognition instrument, the driven gear ring on the top thereof will automatically mesh with the self-rotating gear. At this time, the self-rotating motor drives the transposition cylinder to rotate slowly through the self-rotating gear and the driven gear ring, thereby causing the transposition cylinder to rotate on one side of the visual recognition instrument, so that the visual recognition instrument can take pictures and identify various parts of the transposition cylinder, thereby reducing the detection blind spots;

[0018] 4. The present invention sets up a drying box so that during the drying process of the raw material particles, the ventilation pump will absorb the water-containing air generated by evaporation in the pretreatment box through the air inlet pipe and the three-way exhaust pipe, so that the air is dried by the drying box and then re-input into the interior of the pretreatment box through the return pipe, thereby reducing the heat loss inside the pretreatment box and ensuring the dryness of the air inside the pretreatment box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the pretreatment device of the present invention from a first viewing angle;

[0021] Figure 3 is a schematic diagram of the stereoscopic structure of the pretreatment device of the present invention from a second viewing angle;

[0022] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the pretreatment box and the detection box of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the batch box of the present invention from the first perspective;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the batch box of the present invention from a second viewing angle;

[0026] Figure 8 The present invention Figure 7 Schematic diagram of the structure at A in the middle;

[0027] Figure 9It is a schematic diagram of the internal three-dimensional structure of the screening box of the present invention;

[0028] Reference numerals: 1, pretreatment box; 2, detection box; 3, support frame; 4, injection molding machine body; 5, feed cylinder; 501, feed hopper; 6, batching box; 7, partition box; 701, feed inlet; 8, linear guide rail; 9, electric slider; 10, suspension frame; 11, blanking buckle plate; 12, blanking hose; 13, hinge shaft; 14, opening and closing door; 15, gear box; 16, opening and closing motor; 17, electric heater; 18, screening box; 19, large-aperture screen; 20, small-aperture screen; 21, vibration motor; 22, vibration rod; 23, blanking guide pipe; 24, suction pipe; 25, industrial dust collector; 26, three-way dust suction pipe; 27, transposition motor; 28, transposition frame; 29, transposition cylinder; 30, first solenoid valve; 31, docking hopper; 32, visual recognition instrument; 33, rotation motor; 34, rotation gear; 35, driven tooth ring; 36, waste collection box; 37, ventilation pump; 38, three-way exhaust pipe; 39, drying box; 40, intake pipe; 41, return pipe; 42, second solenoid valve. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0033] As Figures 1 to 9 shown, an injection molding device for automotive lamp components includes a pretreatment device and an injection molding machine body 4. As Figure 1 shown, the pretreatment device includes a pretreatment tank 1. A detection tank 2 is fixedly installed at the bottom of the pretreatment tank 1. A support frame 3 is fixedly installed at the bottom of the detection tank 2. The injection molding machine body 4 is located at the bottom of the support frame 3. A feed cylinder 5 is fixedly installed at the top of the pretreatment tank 1. As Figure 4 shown, a feed hopper 501 is fixedly installed at the top end of the feed cylinder 5. A batching tank 6 is fixedly installed inside the pretreatment tank 1. As Figure 5As shown, a plurality of vertically arranged partition boxes 7 are fixedly installed inside the batching box 6. In this embodiment, the inner wall of the batching box 6 can be set as a porous structure, and the porous structure is filled with a heat preservation liquid. When the batching box 6 is heated, the heat preservation liquid is heated synchronously and flows inside the porous structure, making the heat distribution inside the batching box 6 uniform. At the same time, heat preservation is carried out when the heating stops. Feeding ports 701 are provided at the tops of the partition boxes 7. Two horizontally arranged linear guide rails 8 are fixedly installed at the top of the batching box 6. Electric sliders 9 are driven and installed at the tops of the linear guide rails 8. Suspension frames 10 are fixedly installed at the tops. The same blanking buckle plate 11 is fixedly installed between the two suspension frames 10. The blanking buckle plate 11 corresponds to the positions of a plurality of feeding ports 701. The same blanking hose 12 is fixedly installed between the bottom end of the feeding cylinder 5 and the top of the blanking buckle plate 11. Inside the pretreatment box 1, there is a pretreatment component for pretreating raw material particles such as drying and screening. Inside the detection box 2, there is a detection component for detecting the pretreated raw material particles. A docking hopper 31 adapted to the hopper of the pretreatment box 1 is fixedly installed at the bottom of the detection box 2. In this embodiment, the connection relationship between the docking hopper 31 and the hopper of the injection molding machine body 4 is upper and lower sealed plug-in connection. Specifically, when the injection molding equipment for automotive lamp parts is in use, first, raw material particles are input into the feeding cylinder 5 through the feeding hopper 501. At this time, the blanking buckle plate 11 is located at the top of the outermost partition box 7. Then, the raw material particles are input into the inside of the blanking buckle plate 11 through the blanking hose 12, and then fall into the partition box 7 through the feeding port 701 for temporary storage until enough raw material particles are stored in the partition box 7. Then, the electric slider 9 drives the suspension frame 10 to drive the blanking buckle plate 11 to move to the adjacent partition box 7 for blanking until enough raw material particles are stored in all the partition boxes 7, so that the raw material particles are separated into multiple batches, thereby enabling the raw material particles to be pretreated in batches, which not only ensures the speed of raw material particle pretreatment but also can control the blanking amount each time.

[0034] As Figure 4 shown, the pretreatment component includes a screening box 18 fixedly installed inside the pretreatment box 1. In this embodiment, the screening box 18 is a hopper-shaped pipeline. The screening box 18 is located at the bottom of the batching box 6. As Figure 8 shown, a large-aperture screen 19 and a small-aperture screen 20 are slidably installed inside the screening box 18 from top to bottom in sequence. The large-aperture screen 19 is horizontally arranged, and the small-aperture screen 20 is inclined. As Figure 4 shown, a blanking guide pipe 23 is fixedly installed on one side of the bottom of the screening box 18. In this embodiment, the blanking guide pipe 23 is a bent hopper-shaped pipeline. One end of the blanking guide pipe 23 corresponds to the bottom end of the small-aperture screen 20, and the other end of the blanking guide pipe 23 extends into the inside of the detection box 2. As Figure 3As shown, an electric heater 17 is fixedly installed on one side of the pretreatment box 1. The heating end of the electric heater 17 extends into the interior of the pretreatment box 1 and contacts the batching box 6. In this embodiment, the heating end of the electric heater 17 can be a heating rod, a heating tube, a heating sheet, a heating rack, etc. The heating ends of the electric heater 17 are evenly distributed around the batching box 6. For example Figure 6 , Figure 7 As shown, hinge shafts 13 are rotatably installed at the bottoms of the partition boxes 7. Opening and closing doors 14 are fixedly installed on the side walls of the hinge shafts 13. A plurality of gear boxes 15 are fixedly installed at the bottom of the batching box 6. Opening and closing motors 16 are fixedly installed on one side of each gear box 15. The output shafts of the opening and closing motors 16 at the same location are drivingly connected to the hinge shafts 13 through the gear boxes 15. In this embodiment, a gear set is arranged inside the gear box 15, and the gear set is respectively connected to the output shaft of the opening and closing motor 16 and the hinge shaft 13; specifically, by setting the pretreatment assembly, when the raw material particles are temporarily stored in each partition box 7, the electric heater 17 heats the batching box 6, so as to heat and dry the raw material particles through the partition box 7, and the moisture in the raw material particles is dried. Then, the opening and closing motor 16 at the bottom of the first partition box 7 drives the hinge shaft 13 and the opening and closing door 14 to rotate, so that the internal raw material particles fall into the screening box 18. The raw material particles are sieved by the large-aperture sieve mesh 19 to remove large particle impurities and raw materials with too large particle size inside. The raw material particles after the primary screening continue to fall on the small-aperture sieve mesh 20, so that the small particle impurities inside pass through the small-aperture sieve mesh 20 and fall to the bottom of the screening box 18. The raw material particles after the secondary screening fall into the detection box 2 through the blanking guide pipe 23 for the final detection. Thus, when the raw material particles enter the hopper of the injection molding machine body 4, the raw material particles are automatically dried and screened, effectively preventing problems such as bubbles and black spots caused by the moisture and impurities inside the raw material particles during injection molding, and ensuring the injection molding quality of the automotive lamp.

[0035] For example Figure 8As shown, two vibration motors 21 vertically distributed from top to bottom are fixedly installed on both sides of the screening box 18. The output ends of the vibration motors 21 are fixedly installed with vibration rods 22. Two vibration sliding holes are formed on both sides of the screening box 18. One ends of the four vibration rods 22 respectively penetrate through the four vibration sliding holes and are fixedly installed on both sides of the bottoms of the large-aperture screen 19 and the small-aperture screen 20. In this embodiment, the end of the vibration rod 22 located inside the screening box 18 can seal the inner opening of the vibration sliding hole, thereby preventing raw material particles from leaking out through the vibration sliding hole; specifically, by setting the vibration rod 22, when screening the raw material particles, the vibration motors 21 on both sides will drive the large-aperture screen 19 and the small-aperture screen 20 to vibrate rapidly in a small amplitude up and down through the vibration rods 22, thereby driving the raw material particles on the large-aperture screen 19 and the small-aperture screen 20 to vibrate synchronously, accelerating the separation of impurities and raw material particles, and at the same time ensuring that all the raw material particles for secondary screening on the small-aperture screen 20 can fall into the blanking guide pipe 23.

[0036] As Figure 8 shown, two suction pipes 24 are fixedly installed on one side of the screening box 18. The two suction pipes 24 are respectively located above the large-aperture screen 19 and below the small-aperture screen 20. As Figure 3 shown, an industrial dust collector 25 is fixedly installed on the top of the support frame 3. The air inlet end of the industrial dust collector 25 is fixedly installed with a three-way suction pipe 26. The two suction pipes 24 are both fixedly connected to the three-way suction pipe 26; specifically, by setting the industrial dust collector 25, after the raw material particles are screened, impurities of large and small particles will remain on the top of the large-aperture screen 19 and the bottom of the screening box 18. At this time, the industrial dust collector 25 on one side of the pretreatment box 1 will suck the impurities through the three-way suction pipe 26 and the two suction pipes 24, avoiding the accumulation of impurities.

[0037] As Figure 9As shown, the detection component includes a transposition motor 27 fixedly installed inside the detection box 2, and a transposition frame 28 is fixedly installed on the output shaft of the transposition motor 27. A plurality of vertically arranged transposition cylinders 29 are rotatably installed on the transposition frame 28. In the present embodiment, the transposition cylinders 29 are all made of transparent material, and the plurality of transposition cylinders 29 are evenly distributed along the axis of the output shaft of the transposition motor 27. The positions of the transposition cylinders 29 correspond to the bottom end of the unloading guide tube 23 and the top position of the docking bucket 31. The bottom end of the transposition cylinder 29 is fixedly installed with a first solenoid valve 30, and a waste collection box 36 is fixedly installed at the bottom of the detection box 2. A discharge hole connected to the inside of the waste collection box 36 is opened at the bottom of the detection box 2, and the position of the discharge hole corresponds to the position of the transposition cylinder 29. A visual recognition instrument 32 is fixedly installed inside the detection box 2. Specifically, by setting the detection component, the raw material particles after the secondary screening will fall into the detection box 2 through the unloading guide tube 23. At this time, one of the transposition cylinders 29 will Located directly below the unloading guide tube 23, all the raw material particles will directly fall into the interior of the transposition cylinder 29, and then the transposition motor 27 drives the transposition frame 28 to drive multiple transposition cylinders 29 to rotate and transpose, so that other transposition cylinders 29 can be unloaded. When the transposition cylinder 29 loaded with raw material particles moves to one side of the visual recognition device 32, the visual recognition device 32 will photograph and identify the raw material particles inside the transposition cylinder 29. When impurities appear in the raw material particles, they are marked. Then, when the transposition cylinder 29 moves to the top of the discharge hole, the first solenoid valve 30 at its bottom is opened, so that the raw material particles containing impurities are transported to the interior of the waste collection box 36 to wait for recycling. The remaining raw material particles that meet the use requirements will be transported to the hopper of the injection molding machine body 4 through the docking bucket 31 to wait for injection molding, so that the raw material particles after drying and secondary screening are finally inspected before injection molding, further preventing the raw material particles containing impurities from entering the interior of the injection molding machine body 4 and affecting the injection molding quality of automobile lamps.

[0038] like Figure 9 As shown, a self-rotating motor 33 is fixedly installed inside the detection box 2. In the present embodiment, a self-locking structure is not arranged inside the self-rotating motor 33. The output shaft of the self-rotating motor 33 is fixedly sleeved with a self-rotating gear 34. The self-rotating motor 33 is located above the visual recognition instrument 32. The top of the transposition cylinder 29 is fixedly sleeved with a driven gear ring 35, which is matched with the self-rotating gear 34. Specifically, by arranging the self-rotating motor 33, when the transposition cylinder 29 moves to one side of the visual recognition instrument 32, the driven gear ring 35 on its top will automatically mesh with the self-rotating gear 34. At this time, the self-rotating motor 33 drives the transposition cylinder 29 to rotate slowly through the self-rotating gear 34 and the driven gear ring 35, thereby causing the transposition cylinder 29 to rotate on one side of the visual recognition instrument 32, so that the visual recognition instrument 32 can photograph and identify various parts of the transposition cylinder 29, thereby reducing the detection blind spots.

[0039] like Figure 3As shown in the figure, a drying box 39 is fixedly installed on one side of the pretreatment box 1. An air exchange pump 37 is fixedly installed on one side of the drying box 39. A three-way suction pipe 38 is fixedly installed on one side of the drying box 39. One end of the three-way suction pipe 38 is communicated with the inside of the pretreatment box 1. An air inlet pipe 40 is fixedly installed on one side of the drying box 39. The air inlet pipe 40 is fixedly connected to the air inlet end of the air exchange pump 37. The air delivery end of the air exchange pump 37 is fixedly installed with a return air pipe 41. One end of the return air pipe 41 is communicated with the inside of the pretreatment box 1. Specifically, by setting the drying box 39, during the drying process of the raw material particles, the air exchange pump 37 will suck the water-containing air evaporated in the pretreatment box 1 through the air inlet pipe 40 and the three-way suction pipe 38. After the air is dried by the drying box 39, it is then re-input into the inside of the pretreatment box 1 through the return air pipe 41, reducing the heat loss inside the pretreatment box 1 and ensuring the dryness of the air inside the pretreatment box 1.

[0040] As Figure 4 shown, second electromagnetic valves 42 are fixedly installed at both the top and bottom of the feeding cylinder 5. The other end of the three-way suction pipe 38 is communicated with the inside of the feeding cylinder 5. Specifically, by setting the second electromagnetic valves 42, the second electromagnetic valves 42 can control the feeding of the raw material particles inside the feeding cylinder 5. At the same time, after the raw material particles enter the inside of the feeding cylinder 5, the two second electromagnetic valves 42 above and below the feeding cylinder 5 are both closed, making the inside of the feeding cylinder 5 airtight. At this time, the air exchange pump 37 will suck the air inside the feeding cylinder 5, thereby drying and filtering the air inside the feeding cylinder 5, preventing external air from directly entering the inside of the pretreatment box 1 through the feeding cylinder 5.

[0041] In summary: Before treatment: First, raw material particles are input into the feeding cylinder 5 through the feeding hopper 501. After the raw material particles enter the inside of the feeding cylinder 5, the two second electromagnetic valves 42 above and below the feeding cylinder 5 are both closed, making the inside of the feeding cylinder 5 airtight. At this time, the air exchange pump 37 will suck the air inside the feeding cylinder 5, thereby drying and filtering the air inside the feeding cylinder 5. At this time, the blanking buckle plate 11 is located on the top of the outermost partition box 7. Then the second electromagnetic valve 42 below is opened, and the raw material particles are input into the inside of the blanking buckle plate 11 through the blanking hose 12, and then fall into the partition box 7 through the feeding port 701 for temporary storage until enough raw material particles are stored in the partition box 7. Then the electric slider 9 drives the suspension bracket 10 to drive the blanking buckle plate 11 to move to the adjacent partition box 7 for blanking until sufficient raw material particles are stored in all the partition boxes 7, separating the raw material particles into multiple batches;

[0042] During processing: When the raw material particles are temporarily stored in each partition box 7, the electric heater 17 heats the batching box 6, thereby heating and drying the raw material particles through the partition box 7, drying the moisture in the raw material particles. Then, the opening and closing motor 16 at the bottom of the first partition box 7 drives the hinge shaft 13 and the opening and closing door 14 to rotate, causing the internal raw material particles to fall into the screening box 18. The large-pore sieve 19 screens out large particle impurities and raw materials with too large particle sizes inside the raw material particles. The raw material particles after the initial screening continue to fall on the small-pore sieve 20, allowing the small particle impurities inside to pass through the small-pore sieve 20 and fall to the bottom of the screening box 18. The raw material particles after the secondary screening fall into the detection box 2 through the blanking guide pipe 23 for the final detection. Thus, when the raw material particles enter the hopper of the injection molding machine body 4, the raw material particles are automatically dried and screened, effectively preventing problems such as bubbles and black spots caused by moisture and impurities inside the raw material particles during injection molding;

[0043] After processing: After the raw material particles are screened, impurities of large and small particles will remain on the top of the large-pore sieve 19 and the bottom of the screening box 18. At this time, the industrial vacuum cleaner 25 on one side of the pretreatment box 1 sucks the impurities through the three-way suction pipe 26 and the two suction pipes 24 to avoid impurity accumulation. The raw material particles after the secondary screening fall into the detection box 2 through the blanking guide pipe 23. At this time, one of the transposition cylinders 29 is located directly below the blanking guide pipe 23, and the raw material particles will all directly fall into the interior of this transposition cylinder 29. Then, the transposition motor 27 drives the transposition frame 28 to drive multiple transposition cylinders 29 to rotate and transpose, so as to feed other transposition cylinders 29. When the transposition cylinder 29 loaded with raw material particles moves to one side of the visual recognition instrument 32, the visual recognition instrument 32 takes pictures and recognizes the raw material particles inside the transposition cylinder 29. When impurities appear in the raw material particles, they are marked. Then, when this transposition cylinder 29 moves above the discharge hole, the first solenoid valve 30 at its bottom opens, causing the raw material particles containing impurities to be transported into the waste collection box 36 for waiting to be recycled. The remaining raw material particles that meet the usage requirements are transported to the hopper of the injection molding machine body 4 through the docking hopper 31 for waiting for injection molding. Thus, the final detection of the dried and secondarily screened raw material particles is carried out before injection molding.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding device for automotive lamp components, characterized in that, It includes a pretreatment device and an injection molding machine body (4). The pretreatment device includes a pretreatment box (1). A detection box (2) is fixedly installed at the bottom of the pretreatment box (1). A support frame (3) is fixedly installed at the bottom of the detection box (2). The injection molding machine body (4) is located at the bottom of the support frame (3). A feed cylinder (5) is fixedly installed at the top of the pretreatment box (1). A feed hopper (501) is fixedly installed at the top end of the feed cylinder (5). A batching box (6) is fixedly installed inside the pretreatment box (1). A plurality of vertically arranged partition boxes (7) are fixedly installed inside the batching box (6). Feed ports (701) are opened at the tops of the partition boxes (7). Two horizontally arranged linear guide rails (8) are fixedly installed at the top of the batching box (6). Electric sliders (9) are drivingly installed at the tops of the linear guide rails (8). Suspension frames (10) are fixedly installed at the tops. The same blanking buckle plate (11) is fixedly installed between the two suspension frames (10). The blanking buckle plate (11) corresponds to the positions of the plurality of feed ports (701). The same blanking hose (12) is fixedly installed between the bottom end of the feed cylinder (5) and the top of the blanking buckle plate (11). A pretreatment component for preprocessing raw material particles such as drying and screening is arranged inside the pretreatment box (1). A detection component for detecting the preprocessed raw material particles is arranged inside the detection box (2). A docking hopper (31) adapted to the hopper of the pretreatment box (1) is fixedly installed at the bottom of the detection box (2).

2. The injection molding device for an automotive lamp component according to claim 1, characterized in that, The pretreatment component includes a screening box (18) fixedly installed inside the pretreatment box (1). The screening box (18) is located at the bottom of the batching box (6). A large-aperture screen (19) and a small-aperture screen (20) are slidably installed inside the screening box (18) from top to bottom in sequence. The large-aperture screen (19) is horizontally arranged. The small-aperture screen (20) is obliquely arranged. A blanking guide pipe (23) is fixedly installed at one side of the bottom of the screening box (18). One end of the blanking guide pipe (23) corresponds to the bottom end of the small-aperture screen (20). The other end of the blanking guide pipe (23) extends into the detection box (2). An electric heater (17) is fixedly installed on one side of the pretreatment box (1). The heating end of the electric heater (17) extends into the pretreatment box (1) and contacts the batching box (6). Hinge shafts (13) are rotatably installed at the bottoms of the partition boxes (7). Opening and closing doors (14) are fixedly installed on the side walls of the hinge shafts (13). A plurality of gear boxes (15) are fixedly installed at the bottom of the batching box (6). Opening and closing motors (16) are fixedly installed on one side of each gear box (15). The output shafts of the opening and closing motors (16) at the same place are drivingly connected to the hinge shafts (13) through the gear boxes (15).

3. The injection molding equipment for an automotive lamp component according to claim 2, characterized in that, On both sides of the screening box (18), two vertically distributed vibration motors (21) are fixedly installed from top to bottom. The output ends of the vibration motors (21) are fixedly installed with vibration rods (22). On both sides of the screening box (18), two vibration sliding holes are opened. One ends of the four vibration rods (22) respectively penetrate through the four vibration sliding holes and are fixedly installed on both sides of the bottom of the large-aperture screen (19) and the small-aperture screen (20).

4. An injection molding device for automotive lamp components according to claim 2, characterized in that, On one side of the screening box (18), two suction pipes (24) are fixedly installed. The two suction pipes (24) are respectively located above the large-aperture screen (19) and below the small-aperture screen (20). An industrial dust collector (25) is fixedly installed on the top of the support frame (3). The air inlet end of the industrial dust collector (25) is fixedly installed with a three-way suction pipe (26). The two suction pipes (24) are both fixedly connected with the three-way suction pipe (26).

5. An injection molding device for automotive lamp components according to claim 2, characterized in that, The detection component includes a commutation motor (27) fixedly installed inside the detection box (2). The output shaft of the commutation motor (27) is fixedly installed with a commutation frame (28). A plurality of vertically arranged commutation cylinders (29) are rotatably installed on the commutation frame (28). The plurality of commutation cylinders (29) are evenly distributed along the axis of the output shaft of the commutation motor (27). The positions of the commutation cylinders (29) correspond to the bottom ends of the blanking guide pipes (23) and the top ends of the docking hoppers (31). First solenoid valves (30) are fixedly installed at the bottom ends of the commutation cylinders (29). A waste collection box (36) is fixedly installed at the bottom of the detection box (2). A discharge hole communicating with the inside of the waste collection box (36) is opened at the bottom of the detection box (2). The position of the discharge hole corresponds to the position of the commutation cylinder (29). A visual recognition instrument (32) is fixedly installed inside the detection box (2).

6. An injection molding device for automotive lamp components according to claim 5, characterized in that, An autorotation motor (33) is fixedly installed inside the detection box (2). The output shaft of the autorotation motor (33) is fixedly sleeved with an autorotation gear (34). The autorotation motor (33) is located above the visual recognition instrument (32). Driven tooth rings (35) are fixedly sleeved at the top ends of the commutation cylinders (29). The driven tooth rings (35) are adapted to the autorotation gear (34).

7. An injection molding device for automotive lamp components according to claim 1, characterized in that, A drying box (39) is fixedly installed on one side of the pretreatment box (1). A ventilation pump (37) is fixedly installed on one side of the drying box (39). A three-way exhaust pipe (38) is fixedly installed on one side of the drying box (39). One end of the three-way exhaust pipe (38) is communicated with the inside of the pretreatment box (1). An air inlet pipe (40) is fixedly installed on one side of the drying box (39). The air inlet pipe (40) is fixedly connected with the air inlet end of the ventilation pump (37). The air delivery end of the ventilation pump (37) is fixedly installed with a return air pipe (41). One end of the return air pipe (41) is communicated with the inside of the pretreatment box (1).

8. An injection molding device for automotive lamp components according to claim 7, characterized in that, The top and bottom of the feed cylinder (5) are fixedly installed with second solenoid valves (42), and the other end of the three-way suction pipe (38) is communicated with the inside of the feed cylinder (5).

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