A millimeter wave radar shell preparation process with wave transmission and wave absorption functions

Abstract

The present invention relates to the technical field of radar shell preparation, and specifically to a millimeter wave radar shell preparation process with wave transmission and wave absorption functions, comprising a base, an injection molding machine body and a pair of molds, wherein the base is used to support the injection molding machine body, and the injection molding machine body is used to inject molten plastic into the mold, and further comprises a fixed mold base, a movable mold base, a driving assembly, a locking assembly and a linkage assembly, wherein the bottom of the fixed mold base is fixedly connected to the top of the base, the driving assembly is used to drive the movable mold base to move horizontally on the top of the base, and the two molds are detachably connected to the fixed mold base and the movable mold base respectively. In order to adjust the magnitude of the locking force, the present invention lifts the middle part of the connecting rod upward through a lifting mechanism to make it further bend, and at the same time the tension spring is further stretched, and the pulling force on the hook is increased, so that the magnitude of the locking force can be increased according to the internal pressure of the mold, thereby reducing overflow and improving the quality of the injection molded radar shell.

Description

Technical Field

[0001] The present invention relates to the technical field of radar shell preparation, and in particular to a process for preparing a millimeter wave radar shell with wave transmission and wave absorption functions. Background Art

[0002] Millimeter wave radar is a radar that works in the millimeter wave band. The wavelength of millimeter waves is between microwaves and centimeter waves, so millimeter wave radar has some advantages of microwave radar and photoelectric radar. Radar housing generally refers to the radar cover used to protect the electrical components inside the radar. At present, most radar housings are made of composite materials, which have good wave transmission and wave absorption properties, thereby improving the accuracy of radar detection.

[0003] The structure and appearance of the millimeter-wave radar shell are relatively complex. In order to improve production efficiency, factories mostly need to use injection molding technology to obtain semi-finished injection molded parts during the production process, and then go through processes such as trimming, grinding, laminating and assembly to obtain finished parts.

[0004] Injection molding process will produce flash during the production process. Flash refers to the pressure inside the mold increases as the molten raw materials are injected into the mold during the injection molding process. When the internal pressure is greater than the clamping force, a small gap will appear at the joint of the two molds, causing excessive raw materials to flow into the gap. After the flash solidifies, it will form excess edge material on the periphery of the injection molded part, which needs to be cut and polished. Too much flash will cause a waste of raw materials, and because the millimeter-wave radar shell needs to have good wave transmission and absorption performance, the smoothness of the shell surface needs to be ensured, which requires reducing flash during the injection molding process to reduce the volume of excess edge material.

[0005] In the prior art, the millimeter-wave radar shell preparation process, during injection molding, mostly uses a hydraulic press to push the movable mold horizontally to achieve mold opening, closing and locking. This solution is not convenient for adjusting the size of the locking force according to the size of the internal pressure of the mold, which easily leads to increased overflow and reduces the wave transmission and absorption performance of the millimeter-wave radar shell. Summary of the invention

[0006] The purpose of the present invention is to provide a millimeter-wave radar shell preparation process with wave-transmitting and wave-absorbing functions, which can adjust the size of the clamping force according to the size of the pressure inside the mold during injection molding, so as to achieve the effect of reducing overflow and reducing the volume of excess edge material, thereby improving the wave-transmitting and wave-absorbing performance of the millimeter-wave radar shell and reducing raw material waste.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] A process for preparing a millimeter-wave radar shell with wave-transmitting and wave-absorbing functions is provided, comprising a base, an injection molding machine body and a pair of molds, wherein the base is used to support the injection molding machine body, and the injection molding machine body is used to inject molten plastic into the mold, and further comprises a fixed mold seat, a movable mold seat, a driving assembly, a locking assembly and a linkage assembly, wherein the bottom of the fixed mold seat is fixedly connected to the top of the base, the driving assembly is used to drive the movable mold seat to move horizontally on the top of the base, and the two molds are detachably connected to the fixed mold seat and the movable mold seat respectively, and the locking assembly comprises a connecting rod, a hook, a plurality of tension springs, a round rod and a lifting mechanism, wherein the connecting rod is a bendable rod-shaped structure, one end of the connecting rod is rotatably connected to the top of the fixed mold seat, the hook can be tiltably and slidably installed on the other end of the connecting rod, the tension spring is installed on the connecting rod, the tension spring is used to provide a pulling force obliquely upward to the hook, the round rod can be horizontally movably installed on the fixed mold seat, the round rod is engaged with the hook, and the lifting mechanism is used to connect the connecting rod as the pressure in the mold increases. The middle part of the rod is pushed up, and the linkage assembly is used to make the round rod move horizontally to engage with the hook after mold closing, including the following steps: S1, install the two molds on the fixed mold base and the movable mold base respectively, and push the movable mold base to move horizontally through the driving assembly installed on the base to open and close the mold. The base is equipped with an injection molding machine body, which can inject molten plastic into the mold. S2, a locking mold assembly is installed on the base, and after mold closing, the locking mold assembly locks the fixed mold base and the movable mold base with each other to ensure the tightness of the mold closing. S3, a lifting mechanism is arranged between the locking mold assembly and the fixed mold base, and the locking force of the locking mold assembly can be adjusted according to the pressure inside the mold to avoid overflow. S4, a linkage mechanism is installed on the base, and the linkage mechanism is used to connect the driving assembly and the locking mold assembly, and drives the round rod to move and engage with the locking mold assembly while closing the mold, ensuring that the mold is closed first and then locked, and unlocked first and then opened, so as to prevent the movable mold base and the locking mold assembly from hindering each other's movement.

[0009] Preferably, the lifting mechanism includes a sealing tube, a piston and a push rod. The sealing tube is installed on the top of the fixed mold base, the bottom of the sealing tube is connected to the inside of one of the molds, the piston is slidingly connected to the inner wall of the sealing tube, the bottom of the push rod is fixedly connected to the top of the piston, and the top of the push rod is rotatably connected to the bottom of the connecting rod.

[0010] Preferably, the connecting rod includes a connecting block, a rotating rod, a sleeve and a pair of torsion springs, one end of the rotating rod is rotatably connected to the top of the fixed mold base, the other end of the rotating rod is rotatably connected to one end of the connecting block, the other end of the connecting block is rotatably connected to one end of the sleeve, the hook passes through the other end of the sleeve and is slidably connected thereto, one end of the tension spring is fixedly connected to the inner wall of one end of the sleeve close to the connecting block, the other end of the tension spring is fixedly connected to the hook, two torsion springs are respectively mounted on the periphery of the rotating shaft at both ends of the connecting block, one end of the torsion spring is fixedly connected to the connecting block, and the other ends of the two torsion springs are respectively fixedly connected to the top of the connecting rod and the top of the sleeve.

[0011] Preferably, the driving assembly includes a fixed seat, a hydraulic rod and a plurality of guide columns, the bottom of the fixed seat is fixedly connected to the top of the base, the guide rod is fixedly installed between the fixed seat and the fixed mold seat, the movable mold seat is slidably connected to the periphery of the guide rod, one end of the hydraulic rod is fixedly connected to the fixed seat, and the telescopic end of the hydraulic rod is slidably connected to the movable mold seat through a linkage assembly.

[0012] Preferably, the linkage assembly includes a cylinder, a support rod, a pair of racks, a gear and a push rod, one end of the cylinder is fixedly connected to the telescopic end of the hydraulic rod, the top of the other end of the cylinder is fixedly connected to the bottom of the support rod, the top of the support rod is fixedly connected to the bottom of one of the racks, the two racks are respectively located at the top and bottom of the gear, the rack is meshed with the gear, the top of the other rack is fixedly connected to the bottom of the push rod, one end of the push rod is fixedly connected to the round rod, an empty groove is opened inside the movable mold base, the gear is rotatably installed between the inner walls on both sides of the empty groove, the support rod passes through the bottom wall of the empty groove and is slidably connected thereto, the push rod passes through the top wall of the empty groove and is slidably connected thereto, and a circular groove is opened at one end of the movable mold base, and the circular groove is plug-fitted with the cylinder.

[0013] Preferably, the linkage assembly also includes a circular ring, a circular plate and a thrust spring. The circular ring is sleeved on the periphery of the cylinder and is slidably connected thereto, the circular plate is slidably connected to the inner wall of the cylinder, the top and bottom of the circular plate respectively pass through the top wall and bottom wall of the cylinder and are fixedly connected to the inner wall of the circular ring, the circular ring is fixedly connected to the inner wall of the circular groove, one end of the thrust spring is fixedly connected to the inner wall of the cylinder, and the other end of the thrust spring is fixedly connected to the circular plate.

[0014] Preferably, the connecting rod further comprises a pair of support plates, one side of the support plate is provided with a penetrating fisheye groove, and the two sides of the top of the top rod are respectively slidably connected to the inner walls of the two fisheye grooves.

[0015] Preferably, a limiting rod is fixedly connected to the top of the fixed mold base, and the top of the limiting rod and the bottom of the rotating rod are in conflict with each other.

[0016] Preferably, the lifting mechanism further comprises a nut, which is rotatably connected to the periphery of the sealing tube, wherein a screw mouth is fixedly connected to the top of one of the molds, the screw mouth is communicated with the interior of the mold, and the nut is threadedly connected to the screw mouth.

[0017] Preferably, the movable mold base, the fixed mold base and one end of the mold are all provided with a plurality of T-shaped slots, and the mold locking assembly further comprises a plurality of H-shaped limiting plug rods, which are plug-fitted with the T-shaped slots.

[0018] Beneficial effects of the present invention:

[0019] 1. After the mold is closed, the round rod is moved horizontally to engage with the hook, and the hook is driven to slide away from the connecting rod. At this time, the end of the connecting rod close to the hook is pushed up, and the tension spring is stretched. The tension provided by the tension spring can further lock the two molds.

[0020] 2. When the radar shell is injection molded according to the present invention, as the injection molding proceeds, the pressure in the mold increases, and the lifting mechanism lifts the middle part of the connecting rod upward, causing it to bend further. At the same time, the hook continues to slide away from the connecting rod, and the tension spring is further stretched, increasing the pulling force on the hook. Therefore, the clamping force can be adjusted according to the internal pressure of the mold, thereby improving the quality of the injection molded radar shell.

[0021] 3. The telescopic end of the hydraulic rod of the present invention is connected to the movable mold base through a circular ring, which can not only drive the movable mold base to move, but also push the cylinder into the circular groove after the mold is closed. The circular ring moves around the periphery of the cylinder, and the thrust spring is stretched, driving the push rod to move and push the round rod out to complete the mold locking, so that there is a sequence between mold closing and mold locking, ensuring that the hook is accurately connected with the round rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 .

[0024] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 .

[0025] Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 3 .

[0026] Figure 4 The clamping assembly structure of the present invention is schematically shown in FIG. Figure 1 .

[0027] Figure 5 The clamping assembly structure of the present invention is schematically shown in FIG. Figure 2 .

[0028] Figure 6 It is a schematic diagram of the mold structure of the present invention.

[0029] Figure 7 It is a disassembled diagram of the connecting rod structure of the present invention.

[0030] Figure 8 It is a structural schematic diagram of the fixed mold base of the present invention.

[0031] Fig. 9 It is a cross-sectional view of the sleeve structure of the present invention.

[0032] Fig.10 It is a sectional view of the movable mold base structure of the present invention.

[0033] Fig.11 It is a cross-sectional view of the cylindrical structure of the present invention.

[0034] In the figure:

[0035] 1. Base; 10. Injection molding machine body; 11. Mold; 110. Screw mouth; 111. T-slot; 12. Fixed mold base; 120. Limit rod; 13. Moving mold base; 130. Empty slot; 131. Round slot;

[0036] 2. Driving assembly; 20. Fixed seat; 21. Hydraulic rod; 22. Guide column;

[0037] 3. Clamping assembly; 30. Connecting rod; 31. Connecting block; 32. Rotating rod; 33. Sleeve; 34. Torsion spring; 35. Support plate; 350. Fisheye slot; 36. Hook; 37. Tension spring; 38. Round rod; 39. H-shaped limit rod;

[0038] 4. linkage assembly; 40. cylinder; 41. support rod; 42. rack; 43. gear; 44. push rod; 45. ring; 46. round plate; 47. thrust spring;

[0039] 5. Lifting mechanism; 50. Sealing tube; 51. Piston; 52. Push rod; 53. Nut. DETAILED DESCRIPTION

[0040] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0041] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0042] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which 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, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be 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, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] like Figures 1 to 11 As shown:

[0045] A process for preparing a millimeter wave radar shell with wave-transmitting and wave-absorbing functions includes a base 1, an injection molding machine body 10, and a pair of molds 11. The base 1 is used to support the injection molding machine body 10. The injection molding machine body 10 is used to inject molten plastic into the mold 11. It also includes a fixed mold seat, a movable mold seat 13, a drive component 2, a clamping component 3, and a linkage component 4. The bottom of the fixed mold seat 12 is fixedly connected to the top of the base 1. The drive component 2 is used to drive the movable mold seat 13 to move horizontally on the top of the base 1, thereby realizing the opening and closing of the mold. The two molds 11 are detachably connected to the fixed mold seat 12 and the movable mold seat 13, respectively, so that the mold 11 can be easily replaced, and radar shells of different models can be prepared. The mold locking assembly 3 includes a connecting rod 30, a hook 36, a plurality of tension springs 37, a round rod 38 and a lifting mechanism 5. The connecting rod 30 is a bendable rod-shaped structure. One end of the connecting rod 30 is rotatably connected to the top of the fixed mold base 12. The hook 36 can be installed on the other end of the connecting rod 30 in an inclined and slidable manner. The tension spring 37 is installed on the connecting rod 30. The tension spring 37 is used to provide a pulling force upward to the hook 36. When the radar housing is injected, the two molds 11 are first installed on the movable mold base 13 and the fixed mold base 12 respectively, and the lifting mechanism is 5 is connected to the inside of one of the molds 11, and then the mold closing operation is performed. In the process of the movable mold base 13 approaching the fixed mold base 12, the hook 36 and the convex block on the top of the movable mold base 13 collide with each other, and one end of the connecting rod 30 is pushed upward. Under the action of gravity, the connecting rod 30 is bent, which facilitates the hook 36 to move from one end to the other end along the top of the movable mold base 13 and align with the position of the round rod 38 to prepare for mold locking. At the same time, the bendable structure of the connecting rod 30 also facilitates the lifting mechanism 5 to lift the middle part to increase the mold locking force. The round rod 38 can be installed on the fixed mold base 12 in a horizontally movable manner. The round rod 38 is engaged with the hook 36. After the mold closing is completed, the round rod 38 is moved horizontally to engage with the hook 36, and at the same time, the hook 36 is driven to slide in the direction away from the connecting rod 30. At this time, the end of the connecting rod 30 close to the hook 36 is pushed upward, and the tension spring 37 is stretched. The tension provided by the tension spring 37 can further lock the two molds 11. The lifting mechanism 5 is used to lift the middle part of the connecting rod 30 upward as the pressure in the mold 11 increases. As the injection molding proceeds, the pressure in the mold 11 increases, and the lifting mechanism 5 lifts the middle part of the connecting rod 30 upward, causing it to bend further. At the same time, the hook 36 continues to slide away from the connecting rod 30, and the tension spring 37 is further stretched, and the pulling force on the hook 36 is increased, so that the clamping force can be adjusted according to the internal pressure of the mold 11, thereby improving the quality of the injection-molded radar shell.The linkage assembly 4 is used to make the round rod 38 move horizontally to engage with the hook 36 after mold closing, including the following steps: S1, the two molds 11 are respectively installed on the fixed mold base 12 and the movable mold base 13, and the movable mold base 13 is pushed to move horizontally by the driving assembly 2 installed on the base 1 to open and close the mold. The base 1 is equipped with an injection molding machine body 10, which can inject molten plastic into the mold 11. S2, the base 1 is equipped with a clamping assembly 3, and the clamping assembly 3 locks the fixed mold base 12 and the movable mold base 13 to each other after mold closing. , to ensure the tightness of the mold closing, S3, a lifting mechanism 5 is arranged between the mold locking assembly 3 and the fixed mold base 12, which can adjust the locking force of the mold locking assembly 3 according to the pressure inside the mold 11 to avoid overflow, S4, the linkage mechanism is installed on the base 1, and the linkage mechanism is used to connect the driving assembly 2 and the mold locking assembly 3, and drive the round rod 38 to move and engage with the mold locking assembly 3 while closing the mold, ensuring that the mold is closed first and then locked, and unlocked before opening the mold, so as to prevent the movable mold base 13 and the mold locking assembly 3 from hindering each other's movement.

[0046] like Figures 1 to 8 As shown:

[0047] The lifting mechanism 5 includes a sealing tube 50, a piston 51 and a push rod 52. The sealing tube 50 is installed on the top of the fixed mold base 12. The bottom of the sealing tube 50 is connected to the inside of one of the molds 11. The piston 51 is slidably connected to the inner wall of the sealing tube 50. The bottom of the push rod 52 is fixedly connected to the top of the piston 51, and the top of the push rod 52 is rotatably connected to the bottom of the connecting rod 30. When the pressure in the mold 11 increases, the air is compressed and enters the sealing tube 50, and pushes the piston 51 to move to the top, and pushes the middle part of the connecting rod 30 to bend upward through the push rod 52, thereby increasing the clamping force.

[0048] like Figures 1 to 7 As shown:

[0049] The connecting rod 30 includes a connecting block 31, a rotating rod 32, a sleeve 33 and a pair of torsion springs 34, one end of the rotating rod 32 is rotatably connected to the top of the fixed mold base 12, the other end of the rotating rod 32 is rotatably connected to one end of the connecting block 31, the other end of the connecting block 31 is rotatably connected to one end of the sleeve 33, the hook 36 passes through the other end of the sleeve 33 and is slidably connected thereto, one end of the tension spring 37 is fixedly connected to the inner wall of one end of the sleeve 33 close to the connecting block 31, the other end of the tension spring 37 is fixedly connected to the hook 36, two torsion springs 34 are respectively sleeved on the periphery of the rotating shaft at both ends of the connecting block 31, one end of the torsion spring 34 is fixedly connected to the connecting block 31, and the other ends of the two torsion springs 34 are respectively fixedly connected to the top of the connecting rod 30 and the top of the sleeve 33. The connecting rod 30 can be bent by the rotational connection between the connecting block 31, the rotating rod 32 and the sleeve 33, and the bending of the connecting rod 30 is limited by a pair of torsion springs 34, so that it maintains a hook shape, which facilitates the locking of the hook 36 and the round rod 38. When the hook 36 is away from the connecting block 31, the tension spring 37 is stretched and maintains a tendency to rebound, thereby providing tension to the hook 36 for mold locking.

[0050] like Figures 1 to 5 As shown:

[0051] The driving assembly 2 includes a fixed seat 20, a hydraulic rod 21 and a plurality of guide columns 22. The bottom of the fixed seat 20 is fixedly connected to the top of the base 1. The guide rod is fixedly installed between the fixed seat 20 and the fixed die seat 12. The movable die seat 13 is slidably connected to the outer periphery of the guide rod. One end of the hydraulic rod 21 is fixedly connected to the fixed seat 20. The telescopic end of the hydraulic rod 21 is slidably connected to the movable die seat 13 through the linkage assembly 4. When the hydraulic rod 21 is working, its telescopic end pushes the movable die seat 13 to slide horizontally along the guide column 22, so that the mold opening and closing operation can be realized, and at the same time, the hook 36 can be moved to align with the round rod 38.

[0052] like Figures 1 to 11 As shown:

[0053] The linkage assembly 4 includes a cylinder 40, a support rod 41, a pair of racks 42, a gear 43 and a push rod 44. One end of the cylinder 40 is fixedly connected to the telescopic end of the hydraulic rod 21, and the top of the other end of the cylinder 40 is fixedly connected to the bottom of the support rod 41. The top of the support rod 41 is fixedly connected to the bottom of one of the racks 42. The two racks 42 are respectively located at the top and bottom of the gear 43. The rack 42 is meshed with the gear 43, and the top of the other rack 42 is fixedly connected to the bottom of the push rod 44. One end of the push rod 44 is fixedly connected to the round rod 38. An empty groove 130 is opened inside the movable mold base 13. The gear 43 is rotatably installed between the inner walls on both sides of the empty groove 130. The support rod 41 passes through the bottom wall of the empty groove 130 and is slidably connected thereto. The push rod 44 passes through the top wall of the empty groove 130 and is slidably connected thereto. A circular groove 131 is opened at one end of the movable mold base 13, and the circular groove 131 is plug-fitted with the cylinder 40. When the hydraulic rod 21 pushes the movable mold base 13 close to the fixed mold base 12, the cylinder 40 moves following the telescopic end of the hydraulic rod 21. When the mold is closed, the hydraulic rod 21 continues to move and pushes the cylinder 40 to insert into the circular groove 131. The cylinder 40 drives the rack 42 at the bottom to move horizontally toward the fixed mold base 12 through the support rod 41. Through the meshing transmission between the rack 42 and the gear 43, the gear 43 rotates and drives the top rack 42 to move horizontally away from the fixed mold base 12, so that the push rod 44 pushes the round rod 38 out to engage with the hook 36, and pushes the hook 36 to make it away from the fixed mold base 12, thereby completing the mold locking.

[0054] like Figures 1 to 11 As shown:

[0055] The linkage assembly 4 also includes a ring 45, a circular plate 46 and a thrust spring 47. The ring 45 is sleeved on the outer periphery of the cylinder 40 and is slidably connected thereto. The circular plate 46 is slidably connected to the inner wall of the cylinder 40. The top and bottom of the circular plate 46 respectively pass through the top wall and the bottom wall of the cylinder 40 and are fixedly connected to the inner wall of the ring 45. The ring 45 is fixedly connected to the inner wall of the circular groove 131. One end of the thrust spring 47 is fixedly connected to the inner wall of the cylinder 40, and the other end of the thrust spring 47 is fixedly connected to the circular plate 46. When the hydraulic rod 21 pushes the movable mold base 13 to approach the fixed mold base 12, the telescopic end of the hydraulic rod 21 is connected to the movable mold base 13 through the ring 45, driving the movable mold base 13 to move. After the mold closing is completed, the movable mold base 13 is resisted and cannot move further. As the telescopic end of the hydraulic rod 21 continues to move, the cylinder 40 is pushed to insert into the circular groove 131, and the ring 45 moves around the cylinder 40. The thrust spring 47 is stretched, driving the push rod 44 to move and push the round rod 38 out to complete the mold locking, so that there is a sequence between the mold closing and the mold locking, ensuring that the hook 36 is accurately engaged with the round rod 38.

[0056] like Figures 1 to 7 As shown:

[0057] The connecting rod 30 also includes a pair of support plates 35, one side of the support plate 35 is provided with a through fisheye groove 350, and the top two sides of the top of the push rod 52 are respectively slidably connected to the inner walls of the two fisheye grooves 350. When the lifting mechanism 5 lifts the connecting block 31, the rotation of the rotating rod 32 will drive the connecting block 31 to move horizontally for a certain distance. By providing the fisheye groove 350 to absorb the travel of the connecting block 31, the push rod 52 and the connecting block 31 can be prevented from being locked with each other.

[0058] like Figures 1 to 5 As shown:

[0059] The top of the fixed mold base 12 is fixedly connected to the limiting rod 120, and the top of the limiting rod 120 contacts the bottom of the rotating rod 32. When the hook 36 is separated from the movable mold base 13 after the mold is opened, and the bottom of the connecting block 31 loses its supporting force, the connecting rod 30 rotates toward the bottom under the action of gravity. At this time, the limiting rod 120 resists the rotating rod 32 and forms a lever through the torsion spring 34 to prevent one end of the connecting rod 30 from rotating between the two molds 11 to hinder the mold closing.

[0060] like Figures 1 to 8 As shown:

[0061] The lifting mechanism 5 further includes a nut 53, which is rotatably connected to the outer periphery of the sealing tube 50. A screw hole 110 is fixedly connected to the top of one of the molds 11, the screw hole 110 is communicated with the inside of the mold 11, and the nut 53 is threadedly connected to the screw hole 110. The mold 11 is installed on the fixed mold base 12, and the bottom of the sealing tube 50 is aligned with the screw hole 110, and then the nut 53 is rotated to be threadedly connected with the screw hole 110 and sealed, so that the mold 11 can be installed at the bottom of the lifting mechanism 5, and vice versa, it can be easily disassembled.

[0062] like Figures 1 to 10 As shown:

[0063] The movable mold base 13, the fixed mold base 12 and one end of the mold 11 are all provided with a plurality of T-shaped slots 111, and the mold locking assembly 3 further includes a plurality of H-shaped limit inserts 39, which are plugged into and matched with the T-shaped slots 111. The T-shaped slots 111 on the two molds 11 are aligned with the T-shaped slots 111 on the movable mold base 13 and the fixed mold base 12, respectively, and then the plurality of H-shaped limit inserts 39 are respectively inserted into the plurality of T-shaped slots 111, so that the mold 11 can be installed quickly and further facilitated to be disassembled.

[0064] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not limiting, but are only for the convenience of clearly describing the positional relationship and function between the various components.

Claims

1. A process for preparing a millimeter wave radar housing with wave transmission and wave absorption functions, comprising a base (1), an injection molding machine body (10) and a pair of molds (11), wherein the base (1) is used to support the injection molding machine body (10), and the injection molding machine body (10) is used to inject molten plastic into the mold (11), characterized in that: The mold assembly also includes a fixed mold base (12), a movable mold base (13), a driving assembly (2), a mold locking assembly (3) and a linkage assembly (4). The bottom of the fixed mold base (12) is fixedly connected to the top of the base (1). The driving assembly (2) is used to drive the movable mold base (13) to move horizontally on the top of the base (1). The two molds (11) are detachably connected to the fixed mold base (12) and the movable mold base (13) respectively. The mold locking assembly (3) includes a connecting rod (30), a hook (36), a plurality of tension springs (37), a round rod (38) and a lifting mechanism (5). The connecting rod (30) is a bendable rod-shaped structure. The end is rotatably connected to the top of the fixed mold base (12), the hook (36) is installed on the other end of the connecting rod (30) in an inclined and slidable manner, the tension spring (37) is installed on the connecting rod (30), the tension spring (37) is used to provide a pulling force upward to the hook (36), the round rod (38) is installed on the fixed mold base (12) in a horizontally movable manner, the round rod (38) and the hook (36) are engaged with each other, the lifting mechanism (5) is used to lift the middle part of the connecting rod (30) upward as the pressure in the mold (11) increases, and the linkage component (4) is used to make the round rod (38) move horizontally to engage with the hook (36) after the mold is closed; The lifting mechanism (5) comprises a sealing tube (50), a piston (51) and a push rod (52); the sealing tube (50) is mounted on the top of the fixed mold base (12); the bottom of the sealing tube (50) is connected to the inside of one of the molds (11); the piston (51) is slidably connected to the inner wall of the sealing tube (50); the bottom of the push rod (52) is fixedly connected to the top of the piston (51); and the top of the push rod (52) is rotatably connected to the bottom of the connecting rod (30); The driving assembly (2) comprises a fixed seat (20), a hydraulic rod (21) and a plurality of guide columns (22); the bottom of the fixed seat (20) is fixedly connected to the top of the base (1); the guide rod is fixedly installed between the fixed seat (20) and the fixed die seat (12); the movable die seat (13) is slidably connected to the periphery of the guide rod; one end of the hydraulic rod (21) is fixedly connected to the fixed seat (20); and the telescopic end of the hydraulic rod (21) is slidably connected to the movable die seat (13) via a linkage assembly (4); The linkage assembly (4) comprises a cylinder (40), a support rod (41), a pair of racks (42), a gear (43) and a push rod (44); one end of the cylinder (40) is fixedly connected to the telescopic end of the hydraulic rod (21); the top of the other end of the cylinder (40) is fixedly connected to the bottom of the support rod (41); the top of the support rod (41) is fixedly connected to the bottom of one of the racks (42); the two racks (42) are respectively located at the top and bottom of the gear (43); the rack (42) is meshed with the gear (43); the other rack (44) is meshed with the gear (43); 2) The top is fixedly connected to the bottom of the push rod (44), one end of the push rod (44) is fixedly connected to the round rod (38), a hollow groove (130) is provided inside the movable mold base (13), the gear (43) is rotatably installed between the inner walls on both sides of the hollow groove (130), the support rod (41) passes through the bottom wall of the hollow groove (130) and is slidably connected thereto, the push rod (44) passes through the top wall of the hollow groove (130) and is slidably connected thereto, and a circular groove (131) is provided at one end of the movable mold base (13), and the circular groove (131) is plug-fitted with the cylinder (40); The linkage assembly (4) further comprises a circular ring (45), a circular plate (46) and a thrust spring (47); the circular ring (45) is sleeved on the outer periphery of the cylinder (40) and is slidably connected thereto; the circular plate (46) is slidably connected to the inner wall of the cylinder (40); the top and bottom of the circular plate (46) respectively pass through the top wall and the bottom wall of the cylinder (40) and are fixedly connected to the inner wall of the circular ring (45); the circular ring (45) is fixedly connected to the inner wall of the circular groove (131); one end of the thrust spring (47) is fixedly connected to the inner wall of the cylinder (40); and the other end of the thrust spring (47) is fixedly connected to the circular plate (46); The method comprises the following steps: S1, two molds (11) are respectively mounted on a fixed mold base (12) and a movable mold base (13), and the movable mold base (13) is pushed to move horizontally by a driving assembly (2) mounted on the base (1) to open and close the molds. An injection molding machine body (10) is mounted on the base (1) to inject molten plastic into the mold (11); S2. A mold locking assembly (3) is installed on the base (1). After the mold is closed, the mold locking assembly (3) locks the fixed mold base (12) and the movable mold base (13) with each other to ensure the tightness of the mold; S3, a lifting mechanism (5) is provided between the mold locking assembly (3) and the fixed mold base (12), and the locking force of the mold locking assembly (3) can be adjusted according to the pressure inside the mold (11) to avoid overflow; S4. A linkage mechanism is mounted on the base (1). The linkage mechanism is used to connect the drive assembly (2) and the mold clamping assembly (3). When the mold is closed, the round rod (38) is driven to move and engage with the mold clamping assembly (3). This ensures that the mold is closed before locking, and unlocked before opening, so as to prevent the movable mold base (13) and the mold clamping assembly (3) from hindering each other's movement.

2. The process for preparing a millimeter wave radar housing with wave transmission and wave absorption functions according to claim 1, characterized in that: The connecting rod (30) comprises a connecting block (31), a rotating rod (32), a sleeve (33) and a pair of torsion springs (34); one end of the rotating rod (32) is rotatably connected to the top of the fixed mold base (12); the other end of the rotating rod (32) is rotatably connected to one end of the connecting block (31); the other end of the connecting block (31) is rotatably connected to one end of the sleeve (33); a hook (36) passes through the other end of the sleeve (33) and is slidably connected thereto; one end of a tension spring (37) is fixedly connected to the inner wall of one end of the sleeve (33) close to the connecting block (31); the other end of the tension spring (37) is fixedly connected to the hook (36); two torsion springs (34) are respectively sleeved on the periphery of the rotating shaft at both ends of the connecting block (31); one end of the torsion spring (34) is fixedly connected to the connecting block (31); and the other ends of the two torsion springs (34) are respectively fixedly connected to the top of the connecting rod (30) and the top of the sleeve (33).

3. The process for preparing a millimeter wave radar housing with wave transmission and wave absorption functions according to claim 2, characterized in that: The connecting rod (30) further comprises a pair of support plates (35), one side of the support plate (35) is provided with a penetrating fisheye groove (350), and the top sides of the top rod (52) are respectively slidably connected to the inner walls of the two fisheye grooves (350).

4. The process for preparing a millimeter wave radar housing with wave transmission and wave absorption functions according to claim 2, characterized in that: The top of the fixed mold base (12) is fixedly connected to a limiting rod (120), and the top of the limiting rod (120) and the bottom of the rotating rod (32) are in conflict with each other.

5. The process for preparing a millimeter wave radar housing with wave transmission and wave absorption functions according to claim 1, characterized in that: The lifting mechanism (5) further comprises a nut (53) which is rotatably connected to the periphery of the sealing tube (50); a screw hole (110) is fixedly connected to the top of one of the molds (11); the screw hole (110) is communicated with the interior of the mold (11); and the nut (53) is threadedly connected to the screw hole (110).

6. The process for preparing a millimeter wave radar housing with wave transmission and wave absorption functions according to claim 5, characterized in that: The movable mold base (13), the fixed mold base (12) and one end of the mold (11) are all provided with a plurality of T-shaped slots (111). The mold locking assembly (3) further comprises a plurality of H-shaped limit rods (39). The H-shaped limit rods (39) are plug-fitted into the T-shaped slots (111).

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