Forming die and forming method of automobile laser radar protection shell

Abstract

The invention relates to the technical field of automobile radar shell forming, in particular to an automobile laser radar protective shell forming mold which comprises a rear mold base, and a rear mold core is arranged on the front surface of the rear mold base; a front mold core is arranged on the rear surface of the front mold base, and the front mold base can be installed at the front end of the rear mold base in a front-back moving mode; the rear die holder is provided with a side slide; the bottom of the side slide is connected with a hydraulic oil cylinder; after the front mold base moves backwards and is assembled with the rear mold base, the rear mold core, the front mold core and the side slide can define a first cavity for injection molding of the protective shell; a magnetic attraction part is arranged on the face, facing the first cavity, of the side slide, and before the front die base and the rear die base are assembled, the annular metal support can be fed and attracted by the magnetic attraction part. The invention further relates to a forming method of the automobile laser radar protection shell. Compared with the prior art, the product manufacturing process can be simplified, the production time is shortened, and the production efficiency is improved; the protective shell with a better sealing effect is obtained, the service life is prolonged, and the cost of replacing the protective shell by a user is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile radar housing molding, and in particular to a molding die and a molding method for an automobile laser radar protective housing. Background Art

[0002] LiDAR uses a laser transmitter to emit laser pulses to acquire signals. When the laser pulses encounter obstacles, they are transmitted back to the vehicle's sensor. Based on this information, the vehicle's system constructs a three-dimensional model of the surrounding environment. LiDAR's function is to detect the surrounding environment, so installing it on the roof clearly provides a wider and higher field of view, without being affected by the car's windows or low obstacles.

[0003] In related technologies, some roof-mounted LiDARs require a protective cover to protect them from damage caused by external forces. Currently, most protective covers are made of metal. To prevent interference with the LiDAR's transmission, a window is typically provided in the metal cover, allowing the LiDAR to emit laser pulses through the window to acquire signals.

[0004] However, the inventors found in actual production operations that the production process of this metal protective cover includes die-casting the metal protective cover, injection molding the plastic shell, dispensing the plastic shell, assembling the plastic shell and the metal protective cover and maintaining pressure; and the defects of this production operation are that it has many manufacturing processes, the required production operations are time-consuming, and it cannot be adapted to mass production operations; secondly, during actual use of this metal protective cover, especially at high temperatures or after long periods of use, the plastic shell and the metal protective shell will become loose, or even the metal protective shell will fall off, resulting in it being unable to effectively protect the internal laser radar, and it can be seen that its service life is short.

[0005] Therefore, it is necessary to study a new technical solution to solve the above problems. Summary of the Invention

[0006] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a molding die for an automotive lidar protective shell, which effectively solves the technical defects of the prior art metal protective shell, such as long production time and short service life.

[0007] To achieve the above purpose, the present invention adopts the following technical solution: a forming die for a protective shell of an automobile laser radar, comprising A rear mold base, the front surface of which is provided with a rear mold core; and The front mold base has a front mold core on its rear surface, and the front mold base can be installed in a front and rear movable manner; wherein, The rear mold base is provided with a side slide that can move up and down, and the bottom of the side slide is connected to a hydraulic cylinder; when the front mold base moves backward and closes the mold with the rear mold base, the rear mold core, the front mold core and the side slide can enclose the first cavity for injection molding the protective shell; A magnetic component is provided on the side of the side position facing the first cavity. Before the front mold base and the rear mold base are closed, the annular metal bracket can be loaded and adsorbed by the magnetic component.

[0008] The advantageous effect of the molding die for the automotive laser radar protective housing provided by the present invention is that the protective housing is injection molded by first adsorbing the annular metal bracket onto the magnetic component, then driving the front mold base and the rear mold base to close the mold, and then injection molding the protective housing through the rear mold core, the front mold core, and the side position, so that the plastic of the protective housing completely covers the annular metal bracket; Compared with existing technologies, the automotive LiDAR protective housing is characterized by the organic combination of an annular metal bracket and plastic. The metal bracket provides high strength and rigidity, effectively resisting external mechanical impacts and enhancing the structural stability of the protective housing, ensuring effective protection of the LiDAR and reducing damage to the internal components of the LiDAR caused by external impacts. Secondly, the automotive LiDAR protective housing, which is injection-molded from plastic, ensures the normal transmission and reception of laser signals without affecting the LiDAR's detection performance. Furthermore, there is no need for a window like in a metal protective cover structure, nor is there a need for a plastic shell in the window's place. This simplifies the manufacturing process, shortens production time, and improves production efficiency. Thirdly, the automotive LiDAR protective shell made of injection-molded plastic material does not require a window like a metal protective cover and a plastic shell at the window; therefore, the sealing of the protective shell can be improved, preventing moisture, dust, etc. from entering the interior of the LiDAR, protecting the internal optical components and electronic equipment from damage, and improving the reliability and stability of the LiDAR; at the same time, the integrated design of the protective shell can also extend its service life and reduce the cost of replacing the protective shell for users.

[0009] As a preferred solution, the rear mold base is provided with a first notch, and the first notch passes through the lower surface of the rear mold base; A first base is installed on the lower surface of the rear mold base, and the first base is provided with guide plates arranged at a front and rear interval. Guide grooves are provided on the opposite sides of the two guide plates, and guide protrusions that can be slidably installed in the guide grooves are provided on the front and rear sides of the side positions; The hydraulic oil cylinder is installed on the first base, and the hydraulic telescopic rod of the hydraulic oil cylinder is connected to the lower surface of the side position.

[0010] As a preferred solution, the first cavity includes a top cavity and a side cavity, and the top cavity and the side cavity are conductively connected; The front surface of the rear mold core is provided with a first molding portion for injection molding the inner surface of the protective shell, and the rear surface of the front mold core is provided with a second molding portion for injection molding the outer surface of the protective shell. The first molding portion and the second molding portion enclose a top cavity; The upper surface of the side position is provided with a third molding part for injection molding the outer surface of the protective shell, and the third molding part and the first molding part enclose a side cavity.

[0011] As a preferred solution, a molding cavity for injection molding a buffer protrusion on the top of the protective shell is provided on the rear surface of the second molding part, and the magnetic attraction component is protruded on the surface of the third molding part.

[0012] As a preferred solution, a guide folding recess is provided on the lower surface of the rear mold core, and the guide folding recess is arranged in a V shape; After the front mold base and the rear mold base are closed, the hydraulic cylinder can drive the side slide to move to the first position and insert the metal flat plate of the annular metal bracket into the guide folding recess to fold into a V-shaped folding plate.

[0013] As a preferred solution, after the front mold base and the rear mold base are closed, the hydraulic cylinder can drive the side slide to move to the second position and enclose the first cavity, and the first cavity is used for the first injection molding of the protective shell; When the hydraulic cylinder drives the side slide to move to the third position, it can enclose a second cavity, and the second cavity is used for the second injection molding of the protective shell.

[0014] As a preferred solution, the guide groove is provided with a first micro switch, a second micro switch, a third micro switch and a fourth micro switch in sequence from top to bottom; When the hydraulic cylinder drives the side traveler to move to the first position, the side traveler can trigger the first micro switch; When the hydraulic cylinder drives the side traveler to move to the second position, the side traveler can trigger the second micro switch; When the hydraulic cylinder drives the side travel position to move to the third position, the side travel position can trigger the third micro switch; When the hydraulic cylinder drives the side travel position to move to the fourth position, the side travel position can trigger the fourth micro switch.

[0015] As a preferred solution, the front mold base is provided with a glue injection port, and the rear mold core is provided with a "𠃍"-shaped diversion channel. The "𠃍"-shaped diversion channel includes a horizontal diversion channel and a vertical diversion channel. After the front mold base and the rear mold base are molded together, the glue injection port can be connected to the "𠃍"-shaped diversion channel. The rear mold core is provided with a first glue injection flow channel, one end of the first glue injection flow channel is conductively connected to the vertical diversion channel, and the other end is conductively connected to the first cavity; The rear mold core is provided with a second glue injection flow channel, one end of the second glue injection flow channel is conductively connected to the horizontal diversion channel, and the other end is conductively connected to the second cavity.

[0016] As a preferred solution, the rear mold base is provided with a first ejector plate that can move forward and backward, the first ejector plate is installed with a first ejector, the first ejector extends forward into the "𠃍"-shaped diversion channel, and the first ejector is provided with a first diversion hole; When the first ejector pin moves backward, the vertical diversion channel can be connected to the glue injection port and the horizontal diversion channel and the second glue injection channel can be closed; When the first ejector pin moves forward, the first ejector pin closes the glue injection port and the vertical diversion channel and enables the horizontal diversion channel to be connected with the second glue injection flow through the first diversion hole.

[0017] The present invention also provides a molding method for a molding die of an automobile laser radar protective housing, which is applied to the molding die of an automobile laser radar protective housing. The molding method comprises the following steps: Step 1: Provide a molding die for the automotive laser radar protective housing, install the molding die for the automotive laser radar protective housing on an injection molding machine, and drive the front mold base to move forward and backward with the rear mold base to complete mold closing or mold opening; Step 2: The front mold base is driven forward by the injection molding machine to open the mold with the rear mold base; an annular metal bracket is provided, and the annular metal bracket is loaded to the side position, so that the magnetic component absorbs the annular metal bracket; Step 3: The front mold base is driven backward by the injection molding machine to close the mold with the rear mold base; the side slide is driven to move to the first position by the hydraulic cylinder, so that the metal plate of the annular metal bracket is inserted into the guide folding recess and folded into a V-shaped folding plate; Step 4: Using a hydraulic cylinder to drive the side slide to move to a second position, so that the annular metal support is spaced apart from the first cavity; Step 5: The injection molding machine drives the first ejector plate to move backward, causing the first ejector to retract backward to connect the glue injection port and the vertical diversion channel, and close the horizontal diversion channel and the second glue injection channel; Step 6: The hot melt slurry is injected from the injection port of the injection molding machine, flows through the vertical diversion channel and the first injection flow channel, and is injected into the first cavity. The hot melt slurry in the first cavity is cooled for 15 seconds to 30 seconds and solidifies to complete the first injection molding of the protective shell; Step 7: The hydraulic cylinder drives the side slide to move to the third position, so that the side slide is separated from the protective shell formed by the first injection molding, and the outer surface of the protective shell formed by the first injection molding and the side slide are spaced apart to enclose the second cavity; Step 8: The injection molding machine drives the first ejector plate to move forward, so that the first ejector extends forward to close the glue injection port and the vertical diversion channel, and connects the horizontal diversion channel and the second glue injection channel through the first diversion hole; Step 9: The hot melt slurry is injected from the injection port of the injection molding machine, passed through the horizontal diversion channel, the first diversion hole, and the second injection channel, and then injected into the second cavity. The hot melt slurry in the second cavity is cooled and solidified for 15-30 seconds to complete the second injection molding of the protective shell. The plastic of the first injection molding and the plastic of the second injection molding are fused together to form the finished protective shell. Step 10: The front mold base is driven forward by the injection molding machine to open the mold with the rear mold base; and the side slide is driven to move to the fourth position by the hydraulic cylinder to complete the demolding and unloading of the finished protective shell; Step 11: Repeat steps 2 to 10 to continuously form the finished protective shell.

[0018] The beneficial effect of the molding method of the molding mold for the automotive laser radar protective shell provided in the present application is that, by driving the side slide to different positions by the hydraulic cylinder, the metal flat plate folding of the annular metal bracket, the first injection molding of the protective shell and the second injection molding of the protective shell can be completed in the molding mold to obtain a finished protective shell; compared with the traditional technology of using a metal protective cover to assemble a plastic shell, it can simplify the product manufacturing process, shorten the production time and improve production efficiency; at the same time, the finished protective shell can be obtained by the first injection molding of the protective shell and the second injection molding of the protective shell, and a protective shell with better sealing effect can be obtained, its service life can be extended, and the cost of replacing the protective shell for users can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 1 is a schematic diagram of the three-dimensional structure of a forming mold for a protective housing of an automotive laser radar provided in an embodiment of the present application; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the rear mold base of the molding die for the automotive laser radar protective housing is shown; Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the front mold base of the molding die for the automotive laser radar protective housing is shown; Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of the side view of the forming mold of the automotive laser radar protective housing is shown; Figure 5 yes Figure 1 A front view of a molding die for a protective housing for a car laser radar is shown; Figure 6 yes Figure 5 A cross-sectional view at point AA of the molding die for the automotive lidar protective housing showing the folding of the metal flat plate of the annular metal bracket into a V-shaped folded plate; Figure 7 yes Figure 6 A partial enlarged view of point A where the metal flat plate of the annular metal bracket is folded into a V-shaped folded plate in a forming die for the automotive laser radar protective housing; Figure 8 yes Figure 6 A partial enlarged view of point B where the metal flat plate of the annular metal bracket is folded into a V-shaped folded plate in a forming die for the automotive laser radar protective housing is shown; Figure 9 yes Figure 5 A cross-sectional view at AA of the protective housing of the automotive laser radar shown in the molding die during the first injection molding of the protective housing; Figure 10 yes Figure 9 A partial enlarged view of position C of the protective housing of the automotive laser radar shown in the molding die during the first injection molding of the protective housing; Figure 11 yes Figure 5 A cross-sectional view at AA of the protective housing of the automotive laser radar shown in the molding die during the second injection molding of the protective housing; Figure 12 yes Figure 11 A partial enlarged view of a portion D of a protective housing of an automobile laser radar shown in a molding die during the second injection molding of the protective housing; Figure 13 yes Figure 12 A schematic diagram of the specific structure of the protective housing of the automotive laser radar shown in the molding mold for the second injection molding of the protective housing; Figure 14 It is a schematic diagram of the three-dimensional structure of a protective housing that is injection molded using a molding mold for an automotive laser radar protective housing; Figure 15 yes Figure 14 A cross-sectional view of the protective housing is shown.

[0021] Among them, the reference numerals in the figures are: 100. Molding mold for automotive laser radar protective housing; 1001, a first injection molding of the protective shell; 1002, a second injection molding of the protective shell; 10. Rear mold base; 11. Rear mold core; 111. First molding portion; 112. Guide folding recess; 113. "𠃍"-shaped diverter channel; 1131. Horizontal diverter channel; 1132. Vertical diverter channel; 114. First glue injection channel; 115. Second glue injection channel; 12. First notch; 13. First base; 131. Guide plate; 132. Guide groove; 141. First microswitch; 142. Second microswitch; 143. Third microswitch; 144. Fourth microswitch; 15. First ejector plate; 151. First ejector; 1511. First diverter hole; 16. Second ejector plate; 161. Second ejector; 162. Third ejector. 20. Front mold base; 21. Front mold core; 211. Second molding portion; 212. Molding cavity; 22. Glue injection port; 23. Second notch; 30. Side position; 31. Third forming section; 32. Hydraulic cylinder; 33. Guide protrusion; 34. Magnetic component; 40, first cavity; 41, top cavity; 42, side cavity; 50, second cavity; 200, annular metal bracket; 2001, metal flat plate; 2002, V-shaped folded plate; 300, protective shell; 3001, top plastic; 3002, front plastic; 3003, buffer protrusion. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0023] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0026] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Before explaining the embodiments of the present application in detail, the application scenarios of the embodiments of the present application are first described.

[0028] Conventional LiDAR sensors mounted on vehicle roofs require a protective cover to protect them from damage caused by external forces. Currently, most protective covers are made of metal. To prevent interference with LiDAR transmission, a window is typically provided in the metal cover, allowing the LiDAR to emit laser pulses to acquire signals.

[0029] Specifically, the production process of this metal protective cover includes die-casting the metal protective cover, injection molding the plastic shell, gluing at the window of the metal protective cover or at the edge of the plastic shell, assembling and fixing the plastic shell and the metal protective cover, and maintaining pressure on the metal protective cover equipped with the plastic shell; and the defects of this production operation method are: first, its manufacturing process is numerous, and the required production operation is time-consuming, and it cannot be adapted to mass production operations; second, when used in high temperature weather in summer, the metal protective cover will accumulate a lot of heat, and the metal protective cover and the plastic shell are usually fixed by gluing, and the materials of the metal protective cover and the plastic shell are different, resulting in the risk of deformation of the plastic shell or even falling off of the metal protective cover after long-term high-temperature use, making it impossible to effectively protect the internal lidar, and its service life is short.

[0030] Please also refer to Figures 1 to 15 The molding die 100 for the automotive laser radar protective housing provided in the embodiment of the present application is now described. The molding die 100 for the automotive laser radar protective housing includes a rear mold base 10 and a front mold base 20 .

[0031] The front surface of the rear mold base 10 is provided with a rear mold core 11, and the rear surface of the front mold base 20 is provided with a front mold core 21. The front mold base 20 can be mounted on the front end of the rear mold base 10 in a movable manner. The rear mold base 10 is provided with a side slide 30 that can move up and down, and a hydraulic cylinder 32 is connected to the bottom of the side slide 30. When the front mold base 20 moves backward to close the mold with the rear mold base 10, the rear mold core 11, the front mold core 21 and the side slide 30 can enclose a first mold cavity 40 for injection molding a protective shell 300. The side slide 30 facing the first mold cavity 40 is provided with a magnetic attraction component 34. Before the front mold base 20 and the rear mold base 10 are closed, the annular metal bracket 200 can be loaded and attracted by the magnetic attraction component 34.

[0032] Specifically, the process of injection molding the protective housing 300 is as follows: first, the annular metal bracket 200 is attracted to the magnetic component 34, then the front mold base 20 and the rear mold base 10 are driven to close the mold, and the protective housing 300 is injection molded by the rear mold core 11, the front mold core 21 and the side position 30, so that the plastic of the protective housing 300 completely covers the annular metal bracket 200; First, the automotive LiDAR protective housing is an organic combination of an annular metal bracket 200 and plastic. The metal bracket provides high strength and rigidity, effectively resisting external mechanical impacts and enhancing the structural stability of the protective housing, ensuring effective protection of the LiDAR and reducing damage to the internal components of the LiDAR caused by external impacts. Secondly, the automotive LiDAR protective housing, which is injection-molded from plastic, ensures the normal transmission and reception of laser signals without affecting the LiDAR's detection performance. Furthermore, there is no need for a window like in a metal protective cover structure, nor is there a need for a plastic shell in the window's place. This simplifies the manufacturing process, shortens production time, and improves production efficiency. Thirdly, the automotive LiDAR protective shell made of injection-molded plastic material does not require a window like a metal protective cover and a plastic shell at the window; therefore, the sealing of the protective shell can be improved, preventing moisture, dust, etc. from entering the interior of the LiDAR, protecting the internal optical components and electronic equipment from damage, and improving the reliability and stability of the LiDAR; at the same time, the integrated design of the protective shell can also extend its service life and reduce the cost of replacing the protective shell for users.

[0033] It should be noted that hydraulic cylinder 32 is any of the MOB lightweight cylinders, CX thin cylinders, round cylinders, or HRBN series bidirectional self-locking hydraulic cylinders. These types of hydraulic cylinders are currently widely used in the injection mold industry. The operating principle of hydraulic cylinder 32 is that the hydraulic cylinder serves as the power source, and the telescopic rod of the hydraulic cylinder is used to perform telescopic movement, thereby driving the corresponding movement of the side slide. The telescopic movement of the cylinder is controlled by the hydraulic system of the injection molding machine. When the pressurized hydraulic oil enters the rodless or rod chamber of the cylinder, the piston rod extends or retracts under the pressure, thereby driving the movement of the connected slide.

[0034] Please also refer to Figures 1 to 6 In some embodiments, the rear mold base 10 is provided with a first notch 12, and the first notch 12 passes through the lower surface of the rear mold base 10; a first base 13 is installed on the lower surface of the rear mold base 10, and the first base 13 is provided with guide plates 131 arranged at a front and rear interval, and guide grooves 132 are provided on opposite sides of the two guide plates 131, and the side position 30 is provided with guide protrusions 33 that can be slidably installed in the guide grooves 132 on the front and rear sides; the hydraulic cylinder 32 is installed on the first base 13, and the hydraulic telescopic rod of the hydraulic cylinder 32 is connected to the lower surface of the side position 30.

[0035] It is understandable that the front mold base 20 is provided with a second notch 23 , and the second notch 23 is used to avoid the side position 30 .

[0036] Specifically, the first cavity 40 includes a top cavity 41 and a side cavity 42, and the top cavity 41 and the side cavity 42 are conductively connected; the front surface of the rear mold core 11 is provided with a first molding part 111 for injection molding the inner surface of the protective shell, and the rear surface of the front mold core 21 is provided with a second molding part 211 for injection molding the outer surface of the protective shell, and the first molding part 111 and the second molding part 211 enclose the top cavity 41; the upper surface of the side position 30 is provided with a third molding part 31 for injection molding the outer surface of the protective shell, and the third molding part 31 and the first molding part 111 enclose the side cavity 42.

[0037] It is understood that the top cavity 41 is used for injection molding the top plastic 3001 of the protective housing, and the side cavity 42 is used for injection molding the front plastic 3002 of the protective housing. The rear surface of the second molding portion 211 is provided with a molding cavity 212 for injection molding the buffer protrusion 3003 on the top of the protective housing. By injection molding the buffer protrusion 3003 on the top plastic 3001 of the protective housing, the impact resistance of the protective housing can be further improved. When directly impacted by external forces, the impact can be effectively buffered, reducing the risk of fracture, allowing the protective housing to reliably and effectively protect the internal LiDAR.

[0038] It should be noted here that the magnetic component 34 is protruded from the surface of the third forming part 31. The magnetic component 34 is a number of strong magnets, which can effectively adsorb the annular metal bracket 200; the third forming part 31 is provided with a mounting groove for mounting the magnetic component 34. The depth of the mounting groove is less than the thickness of the magnetic component 34, so that after the magnetic component 34 is installed in the mounting groove, part of it protrudes from the surface of the third forming part 31.

[0039] Please also refer to Figures 7 to 13 In other embodiments, a guide folding recess 112 is provided on the lower surface of the rear mold core 11, and the guide folding recess 112 is arranged in a V shape; after the front mold base 20 and the rear mold base 10 are clamped, the hydraulic cylinder 32 can drive the side slide 30 to move to the first position and allow the metal flat plate 2001 of the annular metal bracket 200 to be inserted into the guide folding recess 112 and folded into a V-shaped folding plate 2002.

[0040] Specifically, the rear mold base 10 is provided with a second ejector plate 16 that can move forward and backward, and the second ejector plate 16 is provided with a second ejector, and the second ejector 161 can pass forward through the rear mold core 11 and extend into the side cavity 42; when the hydraulic cylinder 32 can drive the side slide 30 to move to the first position, the second ejector plate 16 can move forward to drive the second ejector to extend into the side cavity 42, exerting a force on the metal flat plate 2001, so that it can smoothly move toward the guide folding recess 112, and fold the metal flat plate 2001 into a V-shaped folding plate 2002 through the guide folding recess 112, thereby reducing the occurrence of the metal flat plate 2001 getting stuck in the side cavity 42 during the folding operation and unable to be folded into the V-shaped folding plate 2002.

[0041] It can be understood that the second ejector plate 16 is provided with a plurality of third ejectors 162. After the front mold base 20 and the rear mold base 10 are opened, the plurality of third ejectors 162 can be used to eject the protective shell. This is a conventional blanking method in the field of injection molds and will not be described in detail here.

[0042] In more detail, after the front mold base 20 and the rear mold base 10 are closed, the hydraulic cylinder 32 can drive the side slide 30 to move to the second position and enclose the first cavity 40, and the first cavity 40 is used for the first injection molding of the protective shell 1001; when the hydraulic cylinder 32 drives the side slide 30 to move to the third position, it can enclose the second cavity 50, and the second cavity 50 is used for the second injection molding of the protective shell 1002.

[0043] Preferably, the guide groove 132 is provided with a first microswitch 141, a second microswitch 142, a third microswitch 143 and a fourth microswitch 144 in sequence from top to bottom; when the hydraulic cylinder 32 drives the side position 30 to move to the first position, the side position 30 can trigger the first microswitch 141; when the hydraulic cylinder 32 drives the side position 30 to move to the second position, the side position 30 can trigger the second microswitch 142; when the hydraulic cylinder 32 drives the side position 30 to move to the third position, the side position 30 can trigger the third microswitch 143; when the hydraulic cylinder 32 drives the side position 30 to move to the fourth position, the side position 30 can trigger the fourth microswitch 144.

[0044] Specifically, the first position, the second position, the third position and the fourth position are actually specific working positions when the side travel position 30 moves up and down.

[0045] For example, after the current mold base 20 and the rear mold base 10 are opened, the side position 30 moves to the fourth position, and the positions are described in sequence as the basic positions; before the current mold base 20 and the rear mold base 10 are closed, the side position 30 is pre-driven to move from the fourth position to the third position, and the distance from the fourth position to the third position is the first distance, and the moving stroke of the first distance is 6mm; after the current mold base 20 and the rear mold base 10 are closed, the side position 30 needs to move from the third position to the first position to complete the folding of the metal flat plate 2001 of the annular metal bracket 200 into the V-shaped folding plate 2002, and the distance from the third position to the first position is the second distance, and the moving stroke of the second distance is 6mm; after completing the folding operation of the V-shaped folding plate 2002, the side position 30 moves down from the first position to the second position , to enclose the first cavity 40, the distance from the first position to the second position is the third distance, and the moving stroke of the third distance is 2mm; after completing the first injection molding of the protective shell 1001, the side position 30 moves down from the second position to the third position, and encloses the second cavity 50, the distance from the second position to the third position is the fourth distance, and the moving stroke of the fourth distance is 4mm; after completing the second injection molding of the protective shell, during the process of opening the mold of the front mold base 20 and the rear mold base 10, the side position 30 moves down from the third position to the fourth position to complete the mold opening and the unloading of the protective shell. At this time, the distance from the third position to the fourth position of the side position 30 is the fourth distance, and the moving stroke of the fourth distance is 6mm. The moving stroke of the fourth distance is the same as the moving stroke of the first distance.

[0046] Of course, depending on the length of the metal plate of the annular metal bracket, the position of the first microswitch can be changed to control the folding of the metal plate of different lengths. In addition, according to the protective shell having different front thicknesses, the specific positions of the second and third microswitches can be changed to injection mold the protective shell with different front thicknesses.

[0047] It should be noted here that the first microswitch 141, the second microswitch 142, the third microswitch 143 and the fourth microswitch 144 can adopt Chint YBLX-ME series limit switches, Tongda MQS-2 series microswitch, Debao DOB-KE8420 and DOB-KE8422 small horizontal micro limit switches. By setting a protrusion on the side position 30, the microswitch is triggered by the protrusion to control the side position 30 to move to a preset position.

[0048] It can be understood that the side position is set to move obliquely. The side position moves from the fourth position to the first position by moving obliquely from bottom to top and backward, and the side position moves from the first position to the fourth position by moving obliquely from top to bottom and forward. Such a structure is conducive to improving the mold opening operation of the protective shell.

[0049] Please also refer to Figures 6 to 13 In other embodiments, the front mold base 20 is provided with a glue injection port 22, and the rear mold core 11 is provided with a "𠃍"-shaped diverter channel 113, the "𠃍"-shaped diverter channel 113 includes a horizontal diverter channel 1131 and a vertical diverter channel 1132. After the front mold base 20 and the rear mold base 10 are molded together, the glue injection port 22 can be conductively connected to the "𠃍"-shaped diverter channel 113; the rear mold core 11 is provided with a first glue injection channel 114, one end of the first glue injection channel 114 is conductively connected to the vertical diverter channel 1132, and the other end is conductively connected to the first cavity 40; the rear mold core 11 is provided with a second glue injection channel 115, one end of the second glue injection channel 115 is conductively connected to the horizontal diverter channel 1131, and the other end is conductively connected to the second cavity 50.

[0050] Specifically, the rear mold base 10 is provided with a first ejector plate 15 that can move forward and backward. The first ejector plate 15 is installed with a first ejector 151. The first ejector 151 extends forward into the "𠃍"-shaped diverter channel 113. The first ejector 151 is provided with a first diverter hole 1511; when the first ejector 151 moves backward, the vertical diverter channel 1132 can be connected with the injection port 22 and close the horizontal diverter channel 1131 and the second injection flow channel 115; when the first ejector 151 moves forward, the first ejector 151 closes the injection port 22 and the vertical diverter channel 1132 and enables the horizontal diverter channel 1131 to be connected with the second injection flow through the first diverter hole 1511.

[0051] It should be noted here that the front-to-back spacing between the first ejector plate 15 and the second ejector plate 16 is set so that when only the first ejector plate 15 is displaced forward and backward, the second ejector plate 16 will not be interfered with, and when only the second ejector plate 16 is displaced forward and backward, the first ejector plate 15 will not be interfered with. Only when the protective shell is ejected for unloading, the first ejector plate 15 and the second ejector plate 16 will move forward at the same time.

[0052] The present application also provides a method for forming a forming mold 100 for an automotive laser radar protective housing, comprising the following steps: Step 1: Provide a molding die 100 for a protective housing for a laser radar system, install the molding die 100 on an injection molding machine, and drive the front mold base 20 to move forward and backward with the rear mold base 10 to complete mold closing or mold opening. Step 2: The front mold base 20 is driven forward by the injection molding machine to open the mold between the front mold base 20 and the rear mold base 10; the annular metal bracket 200 is provided and loaded onto the side position 30, so that the magnetic component 34 attracts the annular metal bracket 200; Step 3: The front mold base 20 is driven backward by the injection molding machine to close the mold with the rear mold base 10; the side slide 30 is driven to move to the first position by the hydraulic cylinder 32, so that the metal flat plate 2001 of the annular metal bracket 200 is inserted into the guide folding recess 112 and folded into a V-shaped folded plate 2002; Step 4: Use the hydraulic cylinder 32 to drive the side slide 30 to move to the second position, so that the annular metal bracket 200 is spaced apart from the first cavity 40; Step 5: The first ejector plate 15 is driven backward by the injection molding machine to retract the first ejector pin 151 to connect the injection port 22 with the vertical diversion channel 1132 and close the horizontal diversion channel 1131 and the second injection channel 115. Step 6: The hot melt slurry is injected from the injection port 22 by the injection molding machine, flows through the vertical diversion channel 1132 and the first injection flow channel 114, and is injected into the first cavity 40. The hot melt slurry in the first cavity 40 is cooled for 15 seconds to 30 seconds and solidifies to complete the first injection molding of the protective housing 1001; Step 7: The hydraulic cylinder 32 drives the side slide 30 to move to the third position, so that the side slide 30 is separated from the protective shell of the first injection molding. The outer surface of the protective shell of the first injection molding and the side slide 30 are spaced apart to enclose the second cavity 50. Step 8: The injection molding machine drives the first ejector plate 15 forward, so that the first ejector 151 extends forward to close the glue injection port 22 and the vertical diversion channel 1132, and connects the horizontal diversion channel 1131 and the second glue injection channel 115 through the first diversion hole 1511; In step 9, the hot melt slurry is injected from the injection port 22 via the injection molding machine, passing through the horizontal diversion channel 1131, the first diversion hole 1511, and the second injection channel 115 into the second mold cavity 50. The hot melt slurry in the second mold cavity 50 is allowed to cool for 15-30 seconds and solidify, completing the second injection molding of the protective housing 1002. The plastic from the first injection molding of the protective housing 1001 and the plastic from the second injection molding of the protective housing 1002 are fused together to form the finished protective housing. Step 10: The front mold base 20 is driven forward by the injection molding machine to open the mold with the rear mold base 10; and the side slide 30 is driven to move to the fourth position by the hydraulic cylinder 32 to complete the demolding and unloading of the finished protective shell. Step 11: Repeat steps 2 to 10 to continuously form the finished protective shell.

[0053] Specifically, after the protective housing has been injected for the first time and injected for the second time, the plastics from the first and second injection molding processes are integrated. This not only increases the thickness of the front side of the protective housing, further enhancing its impact resistance, but also completely covers the annular metal bracket 200, preventing it from protruding from the plastic exterior of the protective housing. Furthermore, the injection-molded protective housing eliminates the need for a window to install a plastic shell to shield the lidar from light. Furthermore, the integrated design provides a more sealed protective housing, extending its service life and reducing replacement costs for users.

[0054] The above is merely a preferred embodiment of the present invention and specifically describes the technical principles of the present invention. These descriptions are intended only to explain the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention, as well as other specific embodiments of the present invention that can be imagined by those skilled in the art without inventive effort, shall be included within the scope of protection of the present invention.

Claims

1. A forming die for a protective housing of an automotive laser radar, comprising A rear mold base (10) is provided with a rear mold core (11) on the front surface; and The front mold base (20) has a front mold core (21) on its rear surface, and the front mold base (20) can be mounted on the front end of the rear mold base (10) in a movable manner forward and backward; the feature is that: The rear mold base (10) is provided with a side position (30) that can move up and down, and the bottom of the side position (30) is connected to a hydraulic cylinder (32); when the front mold base (20) moves backward and closes the mold with the rear mold base (10), the rear mold core (11), the front mold core (21) and the side position (30) can enclose a first mold cavity (40) for injection molding the protective shell; A magnetic component (34) is provided on one side of the side position (30) facing the first cavity (40). Before the front mold base (20) and the rear mold base (10) are closed, the annular metal bracket (200) can be loaded and adsorbed by the magnetic component (34).

2. The forming die of the automotive laser radar protective housing according to claim 1, characterized in that: The rear mold base (10) is provided with a first notch (12), and the first notch (12) passes through the lower surface of the rear mold base (10); A first base (13) is mounted on the lower surface of the rear mold base (10), the first base (13) is provided with guide plates (131) arranged at a front-to-back spacing, guide grooves (132) are provided on opposite sides of the two guide plates (131), and guide protrusions (33) that can be slidably mounted in the guide grooves (132) are provided on the front and back sides of the side position (30); The hydraulic cylinder (32) is mounted on the first base (13), and the hydraulic telescopic rod of the hydraulic cylinder (32) is connected to the lower surface of the side travel position (30).

3. The forming die of the automotive laser radar protective housing according to claim 1 or 2, characterized in that: The first cavity (40) includes a top cavity (41) and a side cavity (42), and the top cavity (41) and the side cavity (42) are conductively connected; The front surface of the rear mold core (11) is provided with a first molding portion (111) for injection molding the inner surface of the protective shell, and the rear surface of the front mold core (21) is provided with a second molding portion (211) for injection molding the outer surface of the protective shell. The first molding portion (111) and the second molding portion (211) enclose a top mold cavity (41); The upper surface of the side position (30) is provided with a third molding portion (31) for injection molding the outer surface of the protective shell, and the third molding portion (31) and the first molding portion (111) enclose a side cavity (42).

4. The forming die of the automotive laser radar protective housing according to claim 3, characterized in that: The rear surface of the second molding part (211) is provided with a molding cavity (212) for injection molding a buffer protrusion on the top of the protective shell, and the magnetic attraction component (34) is convexly provided on the surface of the third molding part (31).

5. The forming die of the automotive laser radar protective housing according to claim 2 or 4, characterized in that: A guide folding recess (112) is provided on the lower surface of the rear mold core (11), and the guide folding recess (112) is arranged in a V shape; After the front mold base (20) and the rear mold base (10) are molded together, the hydraulic cylinder (32) can drive the side position (30) to move to the first position and enable the metal flat plate (2001) of the annular metal bracket (200) to be inserted into the guide folding recess (112) and folded into a V-shaped folding plate.

6. The forming die of the automotive laser radar protective housing according to claim 5, characterized in that: After the front mold base (20) and the rear mold base (10) are molded together, the hydraulic cylinder (32) can drive the side position (30) to move to the second position and enclose the first cavity (40), and the first cavity (40) is used for the first injection molding of the protective shell; When the hydraulic cylinder (32) drives the side position (30) to move to the third position, a second cavity (50) can be enclosed, and the second cavity (50) is used for the second injection molding of the protective shell.

7. The forming die of the automotive laser radar protective housing according to claim 6, characterized in that: The guide groove (132) is provided with a first micro switch (141), a second micro switch (142), a third micro switch (143) and a fourth micro switch (144) in sequence from top to bottom; When the hydraulic cylinder (32) drives the side travel position (30) to move to the first position, the side travel position (30) can trigger the first micro switch (141); When the hydraulic cylinder (32) drives the side travel position (30) to move to the second position, the side travel position (30) can trigger the second micro switch (142); When the hydraulic cylinder (32) drives the side travel position (30) to move to the third position, the side travel position (30) can trigger the third micro switch (143); When the hydraulic cylinder (32) drives the side travel position (30) to move to the fourth position, the side travel position (30) can trigger the fourth micro switch (144).

8. The forming die of the automotive laser radar protective housing according to claim 6 or 7, characterized in that: The front mold base (20) is provided with a glue injection port (22), and the rear mold core (11) is provided with a "𠃍"-shaped diversion channel (113), and the "𠃍"-shaped diversion channel (113) includes a horizontal diversion channel (1131) and a vertical diversion channel (1132). When the front mold base (20) and the rear mold base (10) are molded together, the glue injection port (22) can be connected to the "𠃍"-shaped diversion channel (113); The rear mold core (11) is provided with a first glue injection channel (114), one end of the first glue injection channel (114) is conductively connected to the vertical diversion channel (1132), and the other end is conductively connected to the first mold cavity (40); The rear mold core (11) is provided with a second glue injection channel (115), one end of the second glue injection channel (115) is conductively connected to the horizontal diversion channel (1131), and the other end is conductively connected to the second mold cavity (50).

9. The forming die of the automotive laser radar protective housing according to claim 8, characterized in that: The rear mold base (10) is provided with a first ejector plate (15) that can move forward and backward, and the first ejector plate (15) is installed with a first ejector pin (151). The first ejector pin (151) extends forward into the "𠃍"-shaped diversion channel (113), and the first ejector pin is provided with a first diversion hole (1511); When the first ejector pin (151) moves backward, the vertical diversion channel (1132) can be connected to the glue injection port (22) and close the horizontal diversion channel (1131) and the second glue injection channel (115); When the first ejector pin (151) moves forward, the first ejector pin closes the glue injection port (22) and the vertical diversion channel (1132) and enables the horizontal diversion channel (1131) to be connected with the second glue injection flow through the first diversion hole (1511).

10. A molding method for a molding die for a protective housing of an automobile laser radar, applied to the molding die (100) for a protective housing of an automobile laser radar according to any one of claims 1 to 9, characterized in that: The molding method comprises the following steps: Step 1, providing a molding die (100) for a protective housing of an automobile laser radar, installing the molding die (100) for the protective housing of an automobile laser radar on an injection molding machine, and driving the front mold base (20) to move forward and backward with the rear mold base (10) via the injection molding machine to complete mold closing or mold opening; Step 2, driving the front mold base (20) forward by the injection molding machine to open the mold between the front mold base (20) and the rear mold base (10); providing an annular metal bracket (200), loading the annular metal bracket (200) to the side position (30), and allowing the magnetic component (34) to absorb the annular metal bracket (200); Step 3: The front mold base (20) is driven backward by the injection molding machine to close the mold with the rear mold base (10); the side slide (30) is driven to move to the first position by the hydraulic cylinder (32), so that the metal plate (2001) of the annular metal bracket (200) is inserted into the guide folding recess (112) and folded into a V-shaped folding plate; Step 4, driving the side slide (30) to move to the second position by means of the hydraulic cylinder (32), so that the annular metal support (200) and the first cavity (40) are spaced apart; Step 5, driving the first ejector plate (15) to move backward by the injection molding machine, so that the first ejector (151) retracts backward to connect the glue injection port (22) and the vertical diversion channel (1132), and close the horizontal diversion channel (1131) and the second glue injection channel (115); Step 6, injecting the hot melt slurry from the injection port (22) through the injection molding machine, flowing through the vertical diversion channel (1132) and the first injection flow channel (114) into the first cavity (40), and waiting for the hot melt slurry in the first cavity (40) to cool for 15S-30S to solidify to complete the first injection molding of the protective shell; Step 7, driving the side position (30) to move to a third position by means of a hydraulic cylinder (32), so that the side position (30) is separated from the protective shell formed by the first injection molding, and a distance is set between the outer surface of the protective shell formed by the first injection molding and the side position (30) to enclose a second cavity (50); Step 8, driving the first ejector plate (15) forward by the injection molding machine, so that the first ejector (151) extends forward to close the glue injection port (22) and the vertical diversion channel (1132), and conducts and connects the horizontal diversion channel (1131) and the second glue injection channel (115) through the first diversion hole (1511); Step 9, injecting the hot melt slurry from the injection port (22) through the injection molding machine, and injecting it into the second cavity (50) through the horizontal diversion channel (1131), the first diversion hole (1511) and the second injection flow channel (115), and waiting for the hot melt slurry in the second cavity (50) to cool for 15S-30S and solidify to complete the second injection molding of the protective shell, and the plastic of the first injection molding of the protective shell and the plastic of the second injection molding of the protective shell are integrated to obtain a finished protective shell; Step 10, the front mold base (20) is driven forward by the injection molding machine to open the mold between the front mold base (20) and the rear mold base (10); and the side slide (30) is driven to move to the fourth position by the hydraulic cylinder (32), completing the demoulding and unloading of the finished protective shell; Step 11: Repeat steps 2 to 10 to continuously form the finished protective shell.

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