A layered injection mold for thick-walled light guide modules of LED headlights

Abstract

The present invention belongs to the technical field of thick-wall manufacturing of LED headlights, specifically a layered injection mold for a thick-wall light guide module of an LED headlight, wherein the movable mold is detachably connected to an upper mold core, and the fixed mold is detachably connected to a lower mold core, a core is provided on the lower side of the upper mold core, a molding cavity is formed between the core and the lower mold core, a support adjustment plate is provided at the bottom of the molding cavity, a telescopic device is connected to the lower side of the fixed mold by bolts, the telescopic end of the telescopic device is connected to the bottom of the support adjustment plate, a movable cavity is provided on the lower mold core, and the support adjustment plate is located in the movable cavity, and the thick-wall light guide module of the LED headlight is processed and formed by layered injection molding in two steps. Compared with the traditional method of processing and molding the thick-wall light guide module of the LED headlight by one-time injection molding, the present invention reduces the holding time through a reasonable layered design, thereby accelerating the molding of the thick-wall light guide module of the LED headlight and improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of thick-wall manufacturing of LED headlights, in particular to a layered injection mold for a thick-wall light guide module of an LED headlight. Background Art

[0002] An injection mold is a tool used to produce plastic products; it also gives them a complete structure and precise dimensions. Injection molding is a processing method used for mass production of complex parts. Specifically, the process involves injecting heated, molten plastic into a mold cavity under high pressure using an injection molding machine. After cooling and solidification, the resulting molded product is formed.

[0003] The thick-walled light guide modules (i.e., thick-walled lenses) of LED headlights on vehicles are mostly manufactured through injection molds. Due to the thick thickness of the thick walls, a long holding time is required during the injection mold manufacturing process, which reduces processing efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a layered injection mold for a thick-walled light guide module for an LED headlight, so as to solve the problem that during the processing and manufacturing of the thick-walled light guide module for an LED headlight on a vehicle proposed in the above background technology through an injection mold, due to the thick thickness of the thick wall, a long holding time is required, thereby reducing the processing efficiency.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a layered injection mold for a thick-walled light guide module for an LED headlight, comprising a movable mold and a fixed mold, wherein an upper mold core is detachably connected to the movable mold, and a lower mold core is detachably connected to the fixed mold, a core is provided on the lower side of the upper mold core, a molding cavity is formed between the core and the lower mold core, a support adjustment plate is provided at the bottom of the molding cavity, a telescopic device is connected to the lower side of the fixed mold by bolts, the telescopic end of the telescopic device is connected to the bottom of the support adjustment plate, a movable cavity is provided on the lower mold core, the support adjustment plate is located in the movable cavity, a fixing frame is installed on the fixing frame, a push plate is installed on the push plate, a mold ejector rod and a runner ejector rod are installed on the push plate, and the push plate is connected to an ejection device.

[0006] Preferably, an injection port is provided on the movable mold, and an injection runner is connected to the lower end of the injection port, and the injection runner is communicated with the molding cavity.

[0007] Preferably, the injection runner includes an inlet runner and a connecting runner, the inlet runner is opened between the movable mold and the upper mold core, the connecting runner is opened on the lower mold core, the injection port is connected to the inlet runner, the bottom of the inlet runner is connected to a connecting runner, the connecting runner is connected to the molding cavity, the mold push rod penetrates into the molding cavity, and the runner push rod penetrates into the connecting runner.

[0008] Preferably, the support adjustment plate is sealed with the movable cavity.

[0009] Preferably, a guide device is installed between the movable mold and the fixed mold, and the guide device includes a guide rod and a guide base. There are four guide devices, and the four guide devices are distributed in a rectangular shape at the edge between the movable mold and the fixed mold. The lower side of the movable mold is connected to the guide rod by bolts, and the upper side of the fixed mold is connected to the guide base by bolts. The positions of the guide rod and the guide base correspond to each other up and down. A guide hole is opened between the guide base and the fixed mold, and the guide rod is slidably connected to the guide hole.

[0010] Preferably, an upper groove is provided on the lower side of the movable mold, and the upper mold core is fixed in the upper groove by bolts. A lower groove is provided on the upper side of the fixed mold, and the lower mold core is fixed in the lower groove by bolts.

[0011] Preferably, the fixing frame includes a bottom plate and side plates, the left and right ends above the bottom plate are connected to the side plates by bolts, the upper ends of the side plates are in contact with the bottom of the fixed mold, fastening bolts are installed between the bottom plate and the fixed mold, the push plate is arranged on the bottom plate, a sliding limit device is installed between the push plate and the fixed mold, and bases are provided on the left and right sides of the lower end of the bottom plate.

[0012] Preferably, there are four sliding limit devices, which are located at the edge between the push plate and the fixed mold. The sliding limit device includes an upper sliding rod and a lower sliding rod. The upper sliding rod is fixed to the lower end of the fixed mold by bolts, and the lower sliding rod is fixed to the upper end of the push plate by bolts. The upper sliding rod and the lower sliding rod are positioned correspondingly in the upper and lower parts. A sliding hole is provided on the lower sliding rod, and the upper sliding rod is slidably connected to the sliding hole.

[0013] Preferably, the ejection device includes a mounting plate, a connecting seat, a spur rack, a gear and a driving device, the mounting plates are fixedly connected to the left and right sides above the push plate, the connecting seat is connected to the mounting plate by bolts, a through hole is provided between the push plate and the base plate, the connecting seat passes through the through hole, a mounting groove is provided on the connecting seat, a spur rack is installed in the mounting groove, the driving device is installed on the lower side of the base plate, the output end of the driving device is connected to a gear, and the gear is meshed with the spur rack.

[0014] Preferably, the driving device includes a motor, a gearbox, a first transmission shaft, a second transmission shaft, a first bevel gear and a second bevel gear, a motor seat is provided on the lower side of the base plate, the lower side of the motor seat is connected to the motor by bolts, the motor output shaft is connected to the gearbox, the left and right sides of the gearbox are connected to the first transmission shaft, the end of the first transmission shaft is connected to the first bevel gear by screws, the gear is installed on the second transmission shaft, and the second bevel gear is installed at the rear end of the second transmission shaft, the first bevel gear and the second bevel gear are meshed with each other, a first mounting bracket and a second mounting bracket are provided on the lower side of the base plate, the lower end of the first mounting bracket is connected to the first rotating seat by bolts, the first rotating seat is rotatably connected to the first transmission shaft, the lower end of the second mounting bracket is connected to the second rotating seat by bolts, and the second rotating seat is rotatably connected to the second transmission shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) The thick-walled light guide module for LED headlights is formed by two-step layered injection molding. Compared with the traditional one-step injection molding method, the present invention reduces the holding time through a reasonable layered design, thereby accelerating the molding of the thick-walled light guide module for LED headlights and improving work efficiency.

[0017] 2) The driving device drives the gear to rotate. Since the gear and the spur rack are meshed with each other, the sliding limit device can only make the push plate move up and down stably, thereby driving the push plate to move up and down stably. The push plate drives the runner ejector and the mold ejector to move, and the product is ejected from the mold. Spur racks are set on both sides of the push plate, and the force is evenly distributed, which facilitates stable demoulding.

[0018] 3) By setting the sliding limit device, the push plate is prevented from being skewed, so that when the gear rotates, it can smoothly drive the spur rack to move, and then move the push plate. 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 cross-sectional structure of the present invention;

[0021] Figure 3 It is a schematic cross-sectional view of the guide device and the sliding limit device of the present invention;

[0022] Figure 4 It is a cross-sectional structural diagram of the ejection device and the driving device of the present invention;

[0023] Figure 5 This is a schematic diagram of the top view of the driving device of the present invention;

[0024] Figure 6 It is a schematic cross-sectional view of the matching structure of the spur rack and the connecting seat of the present invention.

[0025] In the figure: 1. movable mold; 2. fixed mold; 3. injection port; 4. injection runner; 5. inlet runner; 6. connecting runner; 7. upper groove; 8. upper mold core; 9. core; 10. lower mold core; 11. guide device; 12. ejector device; 13. lower groove; 14. second rotating seat; 15. molding cavity; 16. support and adjustment plate; 17. telescopic device; 18. mold ejector pin; 19. runner ejector pin; 20. fixing frame; 21. side plate; 22. bottom plate; 23. base; 24. push plate; 25. slide limit device; 26. movable cavity; 27. Driving device; 28. Guide rod; 29. ​​Guide base; 30. Guide hole; 31. Fastening bolt; 32. Upper sliding rod; 33. Lower sliding rod; 34. Sliding hole; 35. Mounting plate; 36. Connecting seat; 37. Through hole; 38. Mounting slot; 39. Straight rack; 40. Gear; 41. Second mounting bracket; 42. Second transmission shaft; 43. First mounting bracket; 44. Motor base; 45. Gear box; 46. First rotating base; 47. Motor; 48. First bevel gear; 49. Second bevel gear; 50. First transmission shaft. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0029] Example:

[0030] See also Figure 1-6 The present invention provides a technical solution: a layered injection mold for a thick-walled light guide module of an LED headlight, comprising a movable mold 1 and a fixed mold 2. The movable mold 1 is detachably connected to an upper mold core 8, and the fixed mold 2 is detachably connected to a lower mold core 10. A core 9 is provided on the lower side of the upper mold core 8, and a molding cavity 15 is formed between the core 9 and the lower mold core 10. A support adjustment plate 16 is provided at the bottom of the molding cavity 15. A telescopic device 17 is connected to the lower side of the fixed mold 2 by bolts. The telescopic device 17 can be a cylinder, a hydraulic cylinder, etc. The telescopic end 17 is connected to the bottom of the support adjustment plate 16. A movable cavity 26 is opened on the lower mold core 10. The support adjustment plate 16 is located in the movable cavity 26. The support adjustment plate 16 is driven to move by the telescopic device 17. When the support adjustment plate 16 moves downward, the volume of the molding cavity 15 becomes larger for secondary injection molding. A fixing frame 20 is installed on the lower side of the fixed mold 2. A push plate 24 is installed on the fixing frame 20. A mold ejector 18 and a runner ejector 19 are installed on the push plate 24. The push plate 24 is connected to the ejection device 12.

[0031] The movable mold 1 is provided with an injection port 3 , the lower end of the injection port 3 is connected to an injection runner 4 , and the injection runner 4 is communicated with the molding cavity 15 .

[0032] The injection runner 4 includes an inlet runner 5 and a connecting runner 6. The inlet runner 5 is opened between the movable mold 1 and the upper mold core 8. The connecting runner 6 is opened on the lower mold core 10. The injection port 3 is connected to the inlet runner 5. The bottom of the inlet runner 5 is connected to the connecting runner 6. The connecting runner 6 is connected to the molding cavity 15. The mold ejector 18 penetrates into the molding cavity 15, and the runner ejector 19 penetrates into the connecting runner 6 for ejecting the product.

[0033] The support adjustment plate 16 is in sealing cooperation with the moving cavity 26 .

[0034] A guide device 11 is installed between the movable mold 1 and the fixed mold 2. The guide device 11 includes a guide rod 28 and a guide base 29. There are four guide devices 11. The four guide devices 11 are located at the edge between the movable mold 1 and the fixed mold 2 and are distributed in a rectangular shape. The lower side of the movable mold 1 is connected to the guide rod 28 by bolts, and the upper side of the fixed mold 2 is connected to the guide base 29 by bolts. The positions of the guide rod 28 and the guide base 29 correspond to each other. A guide hole 30 is provided between the guide base 29 and the fixed mold 2. The guide rod 28 is slidably connected to the guide hole 30, so that the movable mold 1 and the fixed mold 2 can be in stable contact.

[0035] An upper groove 7 is formed on the lower side of the movable mold 1, and the upper mold core 8 is fixed in the upper groove 7 by bolts. A lower groove 13 is formed on the upper side of the fixed mold 2, and the lower mold core 10 is fixed in the lower groove 13 by bolts.

[0036] The fixing frame 20 includes a bottom plate 22 and a side plate 21. The left and right ends of the bottom plate 22 are connected to the side plates 21 by bolts. The upper ends of the side plates 21 are in contact with the bottom of the fixed mold 2. Fastening bolts 31 are installed between the bottom plate 22 and the fixed mold 2. The push plate 24 is arranged on the bottom plate 22. A sliding limit device 25 is installed between the push plate 24 and the fixed mold 2 to enable the push plate 24 to move up and down stably. Bases 23 are provided on the left and right sides of the lower end of the bottom plate 22.

[0037] There are four sliding limit devices 25, and the four sliding limit devices 25 are located at the edge between the push plate 24 and the fixed mold 2. The sliding limit device 25 includes an upper sliding rod 32 and a lower sliding rod 33. The upper sliding rod 32 is fixed to the lower end of the fixed mold 2 by bolts, and the lower sliding rod 33 is fixed to the upper end of the push plate 24 by bolts. The upper sliding rod 32 and the lower sliding rod 33 are positioned correspondingly in the upper and lower parts. A sliding hole 34 is opened on the lower sliding rod 33. The upper sliding rod 32 is slidably connected to the sliding hole 34 to prevent the push plate 24 from being skewed.

[0038] The ejection device 12 includes a mounting plate 35, a connecting seat 36, a spur rack 39, a gear 40 and a driving device 27. The mounting plates 35 are fixedly connected to the left and right sides above the push plate 24. The connecting seat 36 is connected to the mounting plate 35 by bolts. A through hole 37 is provided between the push plate 24 and the base plate 22. The connecting seat 36 passes through the through hole 37. A mounting groove 38 is provided on the connecting seat 36. A spur rack 39 is installed in the mounting groove 38. The driving device 27 is installed on the lower side of the base plate 22. The output end of the driving device 27 is connected to the gear 40, which meshes with the spur rack 39. The rotation of the gear 40 drives the spur rack 39 to move, thereby moving the push plate 24.

[0039] The driving device 27 includes a motor 47, a gear box 45, a first transmission shaft 50, a second transmission shaft 42, a first bevel gear 48 and a second bevel gear 49. A motor seat 44 is provided on the lower side of the base plate 22. The motor 47 is connected to the lower side of the motor seat 44 by bolts. The output shaft of the motor 47 is connected to the gear box 45. The left and right sides of the gear box 45 are connected to the first transmission shaft 50. The end of the first transmission shaft 50 is connected to the first bevel gear 48 by screws. The gear 40 is mounted on the second transmission shaft 42. The second bevel gear 49 is installed at the rear end of the second transmission shaft 42. The first bevel gear 48 and the second bevel gear 49 are meshed with each other. A first mounting bracket 43 and a second mounting bracket 41 are provided on the lower side of the base plate 22. The lower end of the first mounting bracket 43 is connected to the first rotating bracket 46 by bolts. The first rotating bracket 46 is rotatably connected to the first transmission shaft 50. The lower end of the second mounting bracket 41 is connected to the second rotating bracket 14 by bolts. The second rotating bracket 14 is rotatably connected to the second transmission shaft 42.

[0040] Working principle: The injection plastic enters the injection runner 4 through the injection port 3, and then enters the molding cavity 15 through the injection runner 4 for injection molding. After one injection molding, the support adjustment plate 16 is driven to move by the telescopic device 17. When the support adjustment plate 16 moves downward, the volume of the molding cavity 15 becomes larger, and then a second injection molding is performed. After the two injection moldings are combined, a thick-walled light guide module for an LED headlight (i.e., a thick-walled lens) is obtained. Compared with the traditional method of processing and molding the thick-walled light guide module for an LED headlight by one-time injection molding, the present invention reduces the holding time through a reasonable layered design, thereby accelerating the molding of the thick-walled light guide module for an LED headlight and improving work efficiency. The first transmission shaft 50 is driven to rotate by the motor 47. Since the first bevel gear 48 and the second bevel gear 49 are engaged with each other, the gear 40 is driven to rotate. Since the gear 40 is engaged with the spur rack 39, the sliding limit device 25 is cooperated with the setting to drive the spur rack 39 to move, so that the push plate 24 moves, and the molded product is ejected and demolded by the mold ejector rod 18 and the runner ejector rod 19.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure signs in the claims should not be regarded as limiting the claims involved.

[0042] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A layered injection mold for a thick-walled light guide module of an LED headlight, comprising a movable mold and a fixed mold, characterized in that: The movable mold is detachably connected to an upper mold core, and the fixed mold is detachably connected to a lower mold core. A core is provided on the lower side of the upper mold core, and a molding cavity is formed between the core and the lower mold core. A support and adjustment plate is provided at the bottom of the molding cavity. A telescopic device is connected to the lower side of the fixed mold by bolts, and the telescopic end of the telescopic device is connected to the bottom of the support and adjustment plate. A movable cavity is provided on the lower mold core, and the support and adjustment plate is located in the movable cavity. A fixing frame is installed on the lower side of the fixed mold, and a push plate is installed on the fixing frame. A mold ejector rod and a runner ejector rod are installed on the push plate, and the push plate is connected to an ejection device. The fixing frame includes a bottom plate and side plates, the left and right ends of the top of the bottom plate are connected to the side plates by bolts, the upper ends of the side plates are in contact with the bottom of the fixed mold, fastening bolts are installed between the bottom plate and the fixed mold, the push plate is arranged on the bottom plate, a sliding limit device is installed between the push plate and the fixed mold, and bases are provided on the left and right sides of the lower end of the bottom plate; The ejection device includes a mounting plate, a connecting seat, a spur rack, a gear and a driving device. The left and right sides above the push plate are fixedly connected to the mounting plates. The mounting plate is connected to the connecting seat by bolts. A through hole is provided between the push plate and the base plate. The connecting seat passes through the through hole. A mounting slot is provided on the connecting seat. A spur rack is installed in the mounting slot. The driving device is installed on the lower side of the base plate. The output end of the driving device is connected to a gear, and the gear is meshed with the spur rack. The drive device includes a motor, a gearbox, a first transmission shaft, a second transmission shaft, a first bevel gear and a second bevel gear. A motor seat is provided on the lower side of the base plate, and the motor is connected to the lower side of the motor seat by bolts. The motor output shaft is connected to the gearbox, and the left and right sides of the gearbox are connected to the first transmission shaft, and the end of the first transmission shaft is connected to the first bevel gear by screws. The gear is installed on the second transmission shaft, and the second bevel gear is installed at the rear end of the second transmission shaft. The first bevel gear and the second bevel gear are meshed with each other. A first mounting bracket and a second mounting bracket are provided on the lower side of the base plate, and the lower end of the first mounting bracket is connected to the first rotating seat by bolts. The first rotating seat is rotatably connected to the first transmission shaft, and the lower end of the second mounting bracket is connected to the second rotating seat by bolts, and the second rotating seat is rotatably connected to the second transmission shaft.

2. The layered injection mold for thick-walled light guide modules of LED headlights according to claim 1, characterized in that: An injection port is provided on the movable mold, and an injection flow channel is connected to the lower end of the injection port, and the injection flow channel is communicated with the molding cavity.

3. The layered injection mold for thick-walled light guide modules of LED headlights according to claim 2, characterized in that: The injection runner includes an inlet runner and a connecting runner. The inlet runner is opened between the movable mold and the upper mold core, and the connecting runner is opened on the lower mold core. The injection port is connected to the inlet runner. The bottom of the inlet runner is connected to a connecting runner. The connecting runner is connected to the molding cavity. The mold ejector rod penetrates into the molding cavity, and the runner ejector rod penetrates into the connecting runner.

4. The layered injection mold for thick-walled light guide modules of LED headlights according to claim 1, characterized in that: The support adjustment plate is in sealing cooperation with the moving cavity.

5. The layered injection mold for thick-walled light guide modules of LED headlights according to claim 1, characterized in that: A guide device is installed between the movable mold and the fixed mold, and the guide device includes a guide rod and a guide base. There are four guide devices, and the four guide devices are distributed in a rectangular shape at the edge between the movable mold and the fixed mold. The lower side of the movable mold is connected to the guide rod by bolts, and the upper side of the fixed mold is connected to the guide base by bolts. The positions of the guide rod and the guide base correspond to each other up and down. A guide hole is opened between the guide base and the fixed mold, and the guide rod is slidably connected to the guide hole.

6. The layered injection mold for thick-walled light guide modules of LED headlights according to claim 1, characterized in that: An upper groove is provided on the lower side of the movable mold, and the upper mold core is fixed in the upper groove by bolts. A lower groove is provided on the upper side of the fixed mold, and the lower mold core is fixed in the lower groove by bolts.

7. The layered injection mold for thick-walled light guide modules of LED headlights according to claim 1, characterized in that: There are four sliding limit devices, and the four sliding limit devices are located at the edge between the push plate and the fixed mold. The sliding limit device includes an upper sliding rod and a lower sliding rod. The upper sliding rod is fixed to the lower end of the fixed mold by bolts, and the lower sliding rod is fixed to the upper end of the push plate by bolts. The upper sliding rod and the lower sliding rod are positioned correspondingly up and down, and a sliding hole is opened on the lower sliding rod. The upper sliding rod is slidably connected to the sliding hole.

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